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-rw-r--r--builtin/add.c451
-rw-r--r--builtin/annotate.c22
-rw-r--r--builtin/apply.c4679
-rw-r--r--builtin/archive.c109
-rw-r--r--builtin/bisect--helper.c31
-rw-r--r--builtin/blame.c2806
-rw-r--r--builtin/branch.c1053
-rw-r--r--builtin/bundle.c73
-rw-r--r--builtin/cat-file.c409
-rw-r--r--builtin/check-attr.c186
-rw-r--r--builtin/check-ignore.c187
-rw-r--r--builtin/check-mailmap.c66
-rw-r--r--builtin/check-ref-format.c88
-rw-r--r--builtin/checkout-index.c286
-rw-r--r--builtin/checkout.c1247
-rw-r--r--builtin/clean.c1004
-rw-r--r--builtin/clone.c1028
-rw-r--r--builtin/column.c59
-rw-r--r--builtin/commit-tree.c133
-rw-r--r--builtin/commit.c1806
-rw-r--r--builtin/config.c695
-rw-r--r--builtin/count-objects.c133
-rw-r--r--builtin/credential.c31
-rw-r--r--builtin/describe.c482
-rw-r--r--builtin/diff-files.c70
-rw-r--r--builtin/diff-index.c56
-rw-r--r--builtin/diff-tree.c186
-rw-r--r--builtin/diff.c471
-rw-r--r--builtin/fast-export.c1072
-rw-r--r--builtin/fetch-pack.c218
-rw-r--r--builtin/fetch.c1221
-rw-r--r--builtin/fmt-merge-msg.c716
-rw-r--r--builtin/for-each-ref.c1125
-rw-r--r--builtin/fsck.c733
-rw-r--r--builtin/gc.c368
-rw-r--r--builtin/get-tar-commit-id.c41
-rw-r--r--builtin/grep.c918
-rw-r--r--builtin/hash-object.c154
-rw-r--r--builtin/help.c520
-rw-r--r--builtin/index-pack.c1713
-rw-r--r--builtin/init-db.c614
-rw-r--r--builtin/interpret-trailers.c44
-rw-r--r--builtin/log.c1686
-rw-r--r--builtin/ls-files.c554
-rw-r--r--builtin/ls-remote.c136
-rw-r--r--builtin/ls-tree.c188
-rw-r--r--builtin/mailinfo.c1076
-rw-r--r--builtin/mailsplit.c326
-rw-r--r--builtin/merge-base.c259
-rw-r--r--builtin/merge-file.c107
-rw-r--r--builtin/merge-index.c110
-rw-r--r--builtin/merge-ours.c34
-rw-r--r--builtin/merge-recursive.c80
-rw-r--r--builtin/merge-tree.c378
-rw-r--r--builtin/merge.c1551
-rw-r--r--builtin/mktag.c174
-rw-r--r--builtin/mktree.c188
-rw-r--r--builtin/mv.c282
-rw-r--r--builtin/name-rev.c410
-rw-r--r--builtin/notes.c994
-rw-r--r--builtin/pack-objects.c2801
-rw-r--r--builtin/pack-redundant.c695
-rw-r--r--builtin/pack-refs.c21
-rw-r--r--builtin/patch-id.c201
-rw-r--r--builtin/prune-packed.c67
-rw-r--r--builtin/prune.c154
-rw-r--r--builtin/push.c556
-rw-r--r--builtin/read-tree.c249
-rw-r--r--builtin/receive-pack.c1765
-rw-r--r--builtin/reflog.c727
-rw-r--r--builtin/remote-ext.c239
-rw-r--r--builtin/remote-fd.c79
-rw-r--r--builtin/remote.c1626
-rw-r--r--builtin/repack.c407
-rw-r--r--builtin/replace.c498
-rw-r--r--builtin/rerere.c114
-rw-r--r--builtin/reset.c389
-rw-r--r--builtin/rev-list.c403
-rw-r--r--builtin/rev-parse.c850
-rw-r--r--builtin/revert.c214
-rw-r--r--builtin/rm.c434
-rw-r--r--builtin/send-pack.c315
-rw-r--r--builtin/shortlog.c329
-rw-r--r--builtin/show-branch.c958
-rw-r--r--builtin/show-ref.c236
-rw-r--r--builtin/stripspace.c121
-rw-r--r--builtin/symbolic-ref.c76
-rw-r--r--builtin/tag.c747
-rw-r--r--builtin/unpack-file.c36
-rw-r--r--builtin/unpack-objects.c574
-rw-r--r--builtin/update-index.c956
-rw-r--r--builtin/update-ref.c422
-rw-r--r--builtin/update-server-info.c25
-rw-r--r--builtin/upload-archive.c129
-rw-r--r--builtin/var.c93
-rw-r--r--builtin/verify-commit.c93
-rw-r--r--builtin/verify-pack.c82
-rw-r--r--builtin/verify-tag.c91
-rw-r--r--builtin/write-tree.c56
99 files changed, 53665 insertions, 0 deletions
diff --git a/builtin/add.c b/builtin/add.c
new file mode 100644
index 0000000..4bd98b7
--- /dev/null
+++ b/builtin/add.c
@@ -0,0 +1,451 @@
+/*
+ * "git add" builtin command
+ *
+ * Copyright (C) 2006 Linus Torvalds
+ */
+#include "cache.h"
+#include "builtin.h"
+#include "lockfile.h"
+#include "dir.h"
+#include "pathspec.h"
+#include "exec_cmd.h"
+#include "cache-tree.h"
+#include "run-command.h"
+#include "parse-options.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "revision.h"
+#include "bulk-checkin.h"
+#include "argv-array.h"
+
+static const char * const builtin_add_usage[] = {
+ N_("git add [<options>] [--] <pathspec>..."),
+ NULL
+};
+static int patch_interactive, add_interactive, edit_interactive;
+static int take_worktree_changes;
+
+struct update_callback_data {
+ int flags;
+ int add_errors;
+};
+
+static int fix_unmerged_status(struct diff_filepair *p,
+ struct update_callback_data *data)
+{
+ if (p->status != DIFF_STATUS_UNMERGED)
+ return p->status;
+ if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL) && !p->two->mode)
+ /*
+ * This is not an explicit add request, and the
+ * path is missing from the working tree (deleted)
+ */
+ return DIFF_STATUS_DELETED;
+ else
+ /*
+ * Either an explicit add request, or path exists
+ * in the working tree. An attempt to explicitly
+ * add a path that does not exist in the working tree
+ * will be caught as an error by the caller immediately.
+ */
+ return DIFF_STATUS_MODIFIED;
+}
+
+static void update_callback(struct diff_queue_struct *q,
+ struct diff_options *opt, void *cbdata)
+{
+ int i;
+ struct update_callback_data *data = cbdata;
+
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filepair *p = q->queue[i];
+ const char *path = p->one->path;
+ switch (fix_unmerged_status(p, data)) {
+ default:
+ die(_("unexpected diff status %c"), p->status);
+ case DIFF_STATUS_MODIFIED:
+ case DIFF_STATUS_TYPE_CHANGED:
+ if (add_file_to_index(&the_index, path, data->flags)) {
+ if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
+ die(_("updating files failed"));
+ data->add_errors++;
+ }
+ break;
+ case DIFF_STATUS_DELETED:
+ if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
+ break;
+ if (!(data->flags & ADD_CACHE_PRETEND))
+ remove_file_from_index(&the_index, path);
+ if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
+ printf(_("remove '%s'\n"), path);
+ break;
+ }
+ }
+}
+
+int add_files_to_cache(const char *prefix,
+ const struct pathspec *pathspec, int flags)
+{
+ struct update_callback_data data;
+ struct rev_info rev;
+
+ memset(&data, 0, sizeof(data));
+ data.flags = flags;
+
+ init_revisions(&rev, prefix);
+ setup_revisions(0, NULL, &rev, NULL);
+ if (pathspec)
+ copy_pathspec(&rev.prune_data, pathspec);
+ rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
+ rev.diffopt.format_callback = update_callback;
+ rev.diffopt.format_callback_data = &data;
+ rev.max_count = 0; /* do not compare unmerged paths with stage #2 */
+ run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
+ return !!data.add_errors;
+}
+
+static char *prune_directory(struct dir_struct *dir, struct pathspec *pathspec, int prefix)
+{
+ char *seen;
+ int i;
+ struct dir_entry **src, **dst;
+
+ seen = xcalloc(pathspec->nr, 1);
+
+ src = dst = dir->entries;
+ i = dir->nr;
+ while (--i >= 0) {
+ struct dir_entry *entry = *src++;
+ if (dir_path_match(entry, pathspec, prefix, seen))
+ *dst++ = entry;
+ }
+ dir->nr = dst - dir->entries;
+ add_pathspec_matches_against_index(pathspec, seen);
+ return seen;
+}
+
+static void refresh(int verbose, const struct pathspec *pathspec)
+{
+ char *seen;
+ int i;
+
+ seen = xcalloc(pathspec->nr, 1);
+ refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
+ pathspec, seen, _("Unstaged changes after refreshing the index:"));
+ for (i = 0; i < pathspec->nr; i++) {
+ if (!seen[i])
+ die(_("pathspec '%s' did not match any files"),
+ pathspec->items[i].match);
+ }
+ free(seen);
+}
+
+int run_add_interactive(const char *revision, const char *patch_mode,
+ const struct pathspec *pathspec)
+{
+ int status, i;
+ struct argv_array argv = ARGV_ARRAY_INIT;
+
+ argv_array_push(&argv, "add--interactive");
+ if (patch_mode)
+ argv_array_push(&argv, patch_mode);
+ if (revision)
+ argv_array_push(&argv, revision);
+ argv_array_push(&argv, "--");
+ for (i = 0; i < pathspec->nr; i++)
+ /* pass original pathspec, to be re-parsed */
+ argv_array_push(&argv, pathspec->items[i].original);
+
+ status = run_command_v_opt(argv.argv, RUN_GIT_CMD);
+ argv_array_clear(&argv);
+ return status;
+}
+
+int interactive_add(int argc, const char **argv, const char *prefix, int patch)
+{
+ struct pathspec pathspec;
+
+ parse_pathspec(&pathspec, 0,
+ PATHSPEC_PREFER_FULL |
+ PATHSPEC_SYMLINK_LEADING_PATH |
+ PATHSPEC_PREFIX_ORIGIN,
+ prefix, argv);
+
+ return run_add_interactive(NULL,
+ patch ? "--patch" : NULL,
+ &pathspec);
+}
+
+static int edit_patch(int argc, const char **argv, const char *prefix)
+{
+ char *file = git_pathdup("ADD_EDIT.patch");
+ const char *apply_argv[] = { "apply", "--recount", "--cached",
+ NULL, NULL };
+ struct child_process child = CHILD_PROCESS_INIT;
+ struct rev_info rev;
+ int out;
+ struct stat st;
+
+ apply_argv[3] = file;
+
+ git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
+
+ if (read_cache() < 0)
+ die(_("Could not read the index"));
+
+ init_revisions(&rev, prefix);
+ rev.diffopt.context = 7;
+
+ argc = setup_revisions(argc, argv, &rev, NULL);
+ rev.diffopt.output_format = DIFF_FORMAT_PATCH;
+ rev.diffopt.use_color = 0;
+ DIFF_OPT_SET(&rev.diffopt, IGNORE_DIRTY_SUBMODULES);
+ out = open(file, O_CREAT | O_WRONLY, 0666);
+ if (out < 0)
+ die(_("Could not open '%s' for writing."), file);
+ rev.diffopt.file = xfdopen(out, "w");
+ rev.diffopt.close_file = 1;
+ if (run_diff_files(&rev, 0))
+ die(_("Could not write patch"));
+
+ if (launch_editor(file, NULL, NULL))
+ die(_("editing patch failed"));
+
+ if (stat(file, &st))
+ die_errno(_("Could not stat '%s'"), file);
+ if (!st.st_size)
+ die(_("Empty patch. Aborted."));
+
+ child.git_cmd = 1;
+ child.argv = apply_argv;
+ if (run_command(&child))
+ die(_("Could not apply '%s'"), file);
+
+ unlink(file);
+ free(file);
+ return 0;
+}
+
+static struct lock_file lock_file;
+
+static const char ignore_error[] =
+N_("The following paths are ignored by one of your .gitignore files:\n");
+
+static int verbose, show_only, ignored_too, refresh_only;
+static int ignore_add_errors, intent_to_add, ignore_missing;
+
+#define ADDREMOVE_DEFAULT 1
+static int addremove = ADDREMOVE_DEFAULT;
+static int addremove_explicit = -1; /* unspecified */
+
+static int ignore_removal_cb(const struct option *opt, const char *arg, int unset)
+{
+ /* if we are told to ignore, we are not adding removals */
+ *(int *)opt->value = !unset ? 0 : 1;
+ return 0;
+}
+
+static struct option builtin_add_options[] = {
+ OPT__DRY_RUN(&show_only, N_("dry run")),
+ OPT__VERBOSE(&verbose, N_("be verbose")),
+ OPT_GROUP(""),
+ OPT_BOOL('i', "interactive", &add_interactive, N_("interactive picking")),
+ OPT_BOOL('p', "patch", &patch_interactive, N_("select hunks interactively")),
+ OPT_BOOL('e', "edit", &edit_interactive, N_("edit current diff and apply")),
+ OPT__FORCE(&ignored_too, N_("allow adding otherwise ignored files")),
+ OPT_BOOL('u', "update", &take_worktree_changes, N_("update tracked files")),
+ OPT_BOOL('N', "intent-to-add", &intent_to_add, N_("record only the fact that the path will be added later")),
+ OPT_BOOL('A', "all", &addremove_explicit, N_("add changes from all tracked and untracked files")),
+ { OPTION_CALLBACK, 0, "ignore-removal", &addremove_explicit,
+ NULL /* takes no arguments */,
+ N_("ignore paths removed in the working tree (same as --no-all)"),
+ PARSE_OPT_NOARG, ignore_removal_cb },
+ OPT_BOOL( 0 , "refresh", &refresh_only, N_("don't add, only refresh the index")),
+ OPT_BOOL( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files which cannot be added because of errors")),
+ OPT_BOOL( 0 , "ignore-missing", &ignore_missing, N_("check if - even missing - files are ignored in dry run")),
+ OPT_END(),
+};
+
+static int add_config(const char *var, const char *value, void *cb)
+{
+ if (!strcmp(var, "add.ignoreerrors") ||
+ !strcmp(var, "add.ignore-errors")) {
+ ignore_add_errors = git_config_bool(var, value);
+ return 0;
+ }
+ return git_default_config(var, value, cb);
+}
+
+static int add_files(struct dir_struct *dir, int flags)
+{
+ int i, exit_status = 0;
+
+ if (dir->ignored_nr) {
+ fprintf(stderr, _(ignore_error));
+ for (i = 0; i < dir->ignored_nr; i++)
+ fprintf(stderr, "%s\n", dir->ignored[i]->name);
+ fprintf(stderr, _("Use -f if you really want to add them.\n"));
+ exit_status = 1;
+ }
+
+ for (i = 0; i < dir->nr; i++)
+ if (add_file_to_cache(dir->entries[i]->name, flags)) {
+ if (!ignore_add_errors)
+ die(_("adding files failed"));
+ exit_status = 1;
+ }
+ return exit_status;
+}
+
+int cmd_add(int argc, const char **argv, const char *prefix)
+{
+ int exit_status = 0;
+ struct pathspec pathspec;
+ struct dir_struct dir;
+ int flags;
+ int add_new_files;
+ int require_pathspec;
+ char *seen = NULL;
+
+ git_config(add_config, NULL);
+
+ argc = parse_options(argc, argv, prefix, builtin_add_options,
+ builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
+ if (patch_interactive)
+ add_interactive = 1;
+ if (add_interactive)
+ exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
+
+ if (edit_interactive)
+ return(edit_patch(argc, argv, prefix));
+ argc--;
+ argv++;
+
+ if (0 <= addremove_explicit)
+ addremove = addremove_explicit;
+ else if (take_worktree_changes && ADDREMOVE_DEFAULT)
+ addremove = 0; /* "-u" was given but not "-A" */
+
+ if (addremove && take_worktree_changes)
+ die(_("-A and -u are mutually incompatible"));
+
+ if (!take_worktree_changes && addremove_explicit < 0 && argc)
+ /* Turn "git add pathspec..." to "git add -A pathspec..." */
+ addremove = 1;
+
+ if (!show_only && ignore_missing)
+ die(_("Option --ignore-missing can only be used together with --dry-run"));
+
+ if ((0 < addremove_explicit || take_worktree_changes) && !argc) {
+ static const char *whole[2] = { ":/", NULL };
+ argc = 1;
+ argv = whole;
+ }
+
+ add_new_files = !take_worktree_changes && !refresh_only;
+ require_pathspec = !take_worktree_changes;
+
+ hold_locked_index(&lock_file, 1);
+
+ flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
+ (show_only ? ADD_CACHE_PRETEND : 0) |
+ (intent_to_add ? ADD_CACHE_INTENT : 0) |
+ (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
+ (!(addremove || take_worktree_changes)
+ ? ADD_CACHE_IGNORE_REMOVAL : 0));
+
+ if (require_pathspec && argc == 0) {
+ fprintf(stderr, _("Nothing specified, nothing added.\n"));
+ fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
+ return 0;
+ }
+
+ if (read_cache() < 0)
+ die(_("index file corrupt"));
+
+ /*
+ * Check the "pathspec '%s' did not match any files" block
+ * below before enabling new magic.
+ */
+ parse_pathspec(&pathspec, 0,
+ PATHSPEC_PREFER_FULL |
+ PATHSPEC_SYMLINK_LEADING_PATH |
+ PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE,
+ prefix, argv);
+
+ if (add_new_files) {
+ int baselen;
+ struct pathspec empty_pathspec;
+
+ /* Set up the default git porcelain excludes */
+ memset(&dir, 0, sizeof(dir));
+ if (!ignored_too) {
+ dir.flags |= DIR_COLLECT_IGNORED;
+ setup_standard_excludes(&dir);
+ }
+
+ memset(&empty_pathspec, 0, sizeof(empty_pathspec));
+ /* This picks up the paths that are not tracked */
+ baselen = fill_directory(&dir, &pathspec);
+ if (pathspec.nr)
+ seen = prune_directory(&dir, &pathspec, baselen);
+ }
+
+ if (refresh_only) {
+ refresh(verbose, &pathspec);
+ goto finish;
+ }
+
+ if (pathspec.nr) {
+ int i;
+
+ if (!seen)
+ seen = find_pathspecs_matching_against_index(&pathspec);
+
+ /*
+ * file_exists() assumes exact match
+ */
+ GUARD_PATHSPEC(&pathspec,
+ PATHSPEC_FROMTOP |
+ PATHSPEC_LITERAL |
+ PATHSPEC_GLOB |
+ PATHSPEC_ICASE |
+ PATHSPEC_EXCLUDE);
+
+ for (i = 0; i < pathspec.nr; i++) {
+ const char *path = pathspec.items[i].match;
+ if (pathspec.items[i].magic & PATHSPEC_EXCLUDE)
+ continue;
+ if (!seen[i] && path[0] &&
+ ((pathspec.items[i].magic &
+ (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
+ !file_exists(path))) {
+ if (ignore_missing) {
+ int dtype = DT_UNKNOWN;
+ if (is_excluded(&dir, path, &dtype))
+ dir_add_ignored(&dir, path, pathspec.items[i].len);
+ } else
+ die(_("pathspec '%s' did not match any files"),
+ pathspec.items[i].original);
+ }
+ }
+ free(seen);
+ }
+
+ plug_bulk_checkin();
+
+ exit_status |= add_files_to_cache(prefix, &pathspec, flags);
+
+ if (add_new_files)
+ exit_status |= add_files(&dir, flags);
+
+ unplug_bulk_checkin();
+
+finish:
+ if (active_cache_changed) {
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ die(_("Unable to write new index file"));
+ }
+
+ return exit_status;
+}
diff --git a/builtin/annotate.c b/builtin/annotate.c
new file mode 100644
index 0000000..da413ae
--- /dev/null
+++ b/builtin/annotate.c
@@ -0,0 +1,22 @@
+/*
+ * "git annotate" builtin alias
+ *
+ * Copyright (C) 2006 Ryan Anderson
+ */
+#include "git-compat-util.h"
+#include "builtin.h"
+#include "argv-array.h"
+
+int cmd_annotate(int argc, const char **argv, const char *prefix)
+{
+ struct argv_array args = ARGV_ARRAY_INIT;
+ int i;
+
+ argv_array_pushl(&args, "annotate", "-c", NULL);
+
+ for (i = 1; i < argc; i++) {
+ argv_array_push(&args, argv[i]);
+ }
+
+ return cmd_blame(args.argc, args.argv, prefix);
+}
diff --git a/builtin/apply.c b/builtin/apply.c
new file mode 100644
index 0000000..0769b09
--- /dev/null
+++ b/builtin/apply.c
@@ -0,0 +1,4679 @@
+/*
+ * apply.c
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ *
+ * This applies patches on top of some (arbitrary) version of the SCM.
+ *
+ */
+#include "cache.h"
+#include "lockfile.h"
+#include "cache-tree.h"
+#include "quote.h"
+#include "blob.h"
+#include "delta.h"
+#include "builtin.h"
+#include "string-list.h"
+#include "dir.h"
+#include "diff.h"
+#include "parse-options.h"
+#include "xdiff-interface.h"
+#include "ll-merge.h"
+#include "rerere.h"
+
+/*
+ * --check turns on checking that the working tree matches the
+ * files that are being modified, but doesn't apply the patch
+ * --stat does just a diffstat, and doesn't actually apply
+ * --numstat does numeric diffstat, and doesn't actually apply
+ * --index-info shows the old and new index info for paths if available.
+ * --index updates the cache as well.
+ * --cached updates only the cache without ever touching the working tree.
+ */
+static const char *prefix;
+static int prefix_length = -1;
+static int newfd = -1;
+
+static int unidiff_zero;
+static int p_value = 1;
+static int p_value_known;
+static int check_index;
+static int update_index;
+static int cached;
+static int diffstat;
+static int numstat;
+static int summary;
+static int check;
+static int apply = 1;
+static int apply_in_reverse;
+static int apply_with_reject;
+static int apply_verbosely;
+static int allow_overlap;
+static int no_add;
+static int threeway;
+static int unsafe_paths;
+static const char *fake_ancestor;
+static int line_termination = '\n';
+static unsigned int p_context = UINT_MAX;
+static const char * const apply_usage[] = {
+ N_("git apply [<options>] [<patch>...]"),
+ NULL
+};
+
+static enum ws_error_action {
+ nowarn_ws_error,
+ warn_on_ws_error,
+ die_on_ws_error,
+ correct_ws_error
+} ws_error_action = warn_on_ws_error;
+static int whitespace_error;
+static int squelch_whitespace_errors = 5;
+static int applied_after_fixing_ws;
+
+static enum ws_ignore {
+ ignore_ws_none,
+ ignore_ws_change
+} ws_ignore_action = ignore_ws_none;
+
+
+static const char *patch_input_file;
+static const char *root;
+static int root_len;
+static int read_stdin = 1;
+static int options;
+
+static void parse_whitespace_option(const char *option)
+{
+ if (!option) {
+ ws_error_action = warn_on_ws_error;
+ return;
+ }
+ if (!strcmp(option, "warn")) {
+ ws_error_action = warn_on_ws_error;
+ return;
+ }
+ if (!strcmp(option, "nowarn")) {
+ ws_error_action = nowarn_ws_error;
+ return;
+ }
+ if (!strcmp(option, "error")) {
+ ws_error_action = die_on_ws_error;
+ return;
+ }
+ if (!strcmp(option, "error-all")) {
+ ws_error_action = die_on_ws_error;
+ squelch_whitespace_errors = 0;
+ return;
+ }
+ if (!strcmp(option, "strip") || !strcmp(option, "fix")) {
+ ws_error_action = correct_ws_error;
+ return;
+ }
+ die(_("unrecognized whitespace option '%s'"), option);
+}
+
+static void parse_ignorewhitespace_option(const char *option)
+{
+ if (!option || !strcmp(option, "no") ||
+ !strcmp(option, "false") || !strcmp(option, "never") ||
+ !strcmp(option, "none")) {
+ ws_ignore_action = ignore_ws_none;
+ return;
+ }
+ if (!strcmp(option, "change")) {
+ ws_ignore_action = ignore_ws_change;
+ return;
+ }
+ die(_("unrecognized whitespace ignore option '%s'"), option);
+}
+
+static void set_default_whitespace_mode(const char *whitespace_option)
+{
+ if (!whitespace_option && !apply_default_whitespace)
+ ws_error_action = (apply ? warn_on_ws_error : nowarn_ws_error);
+}
+
+/*
+ * For "diff-stat" like behaviour, we keep track of the biggest change
+ * we've seen, and the longest filename. That allows us to do simple
+ * scaling.
+ */
+static int max_change, max_len;
+
+/*
+ * Various "current state", notably line numbers and what
+ * file (and how) we're patching right now.. The "is_xxxx"
+ * things are flags, where -1 means "don't know yet".
+ */
+static int linenr = 1;
+
+/*
+ * This represents one "hunk" from a patch, starting with
+ * "@@ -oldpos,oldlines +newpos,newlines @@" marker. The
+ * patch text is pointed at by patch, and its byte length
+ * is stored in size. leading and trailing are the number
+ * of context lines.
+ */
+struct fragment {
+ unsigned long leading, trailing;
+ unsigned long oldpos, oldlines;
+ unsigned long newpos, newlines;
+ /*
+ * 'patch' is usually borrowed from buf in apply_patch(),
+ * but some codepaths store an allocated buffer.
+ */
+ const char *patch;
+ unsigned free_patch:1,
+ rejected:1;
+ int size;
+ int linenr;
+ struct fragment *next;
+};
+
+/*
+ * When dealing with a binary patch, we reuse "leading" field
+ * to store the type of the binary hunk, either deflated "delta"
+ * or deflated "literal".
+ */
+#define binary_patch_method leading
+#define BINARY_DELTA_DEFLATED 1
+#define BINARY_LITERAL_DEFLATED 2
+
+/*
+ * This represents a "patch" to a file, both metainfo changes
+ * such as creation/deletion, filemode and content changes represented
+ * as a series of fragments.
+ */
+struct patch {
+ char *new_name, *old_name, *def_name;
+ unsigned int old_mode, new_mode;
+ int is_new, is_delete; /* -1 = unknown, 0 = false, 1 = true */
+ int rejected;
+ unsigned ws_rule;
+ int lines_added, lines_deleted;
+ int score;
+ unsigned int is_toplevel_relative:1;
+ unsigned int inaccurate_eof:1;
+ unsigned int is_binary:1;
+ unsigned int is_copy:1;
+ unsigned int is_rename:1;
+ unsigned int recount:1;
+ unsigned int conflicted_threeway:1;
+ unsigned int direct_to_threeway:1;
+ struct fragment *fragments;
+ char *result;
+ size_t resultsize;
+ char old_sha1_prefix[41];
+ char new_sha1_prefix[41];
+ struct patch *next;
+
+ /* three-way fallback result */
+ unsigned char threeway_stage[3][20];
+};
+
+static void free_fragment_list(struct fragment *list)
+{
+ while (list) {
+ struct fragment *next = list->next;
+ if (list->free_patch)
+ free((char *)list->patch);
+ free(list);
+ list = next;
+ }
+}
+
+static void free_patch(struct patch *patch)
+{
+ free_fragment_list(patch->fragments);
+ free(patch->def_name);
+ free(patch->old_name);
+ free(patch->new_name);
+ free(patch->result);
+ free(patch);
+}
+
+static void free_patch_list(struct patch *list)
+{
+ while (list) {
+ struct patch *next = list->next;
+ free_patch(list);
+ list = next;
+ }
+}
+
+/*
+ * A line in a file, len-bytes long (includes the terminating LF,
+ * except for an incomplete line at the end if the file ends with
+ * one), and its contents hashes to 'hash'.
+ */
+struct line {
+ size_t len;
+ unsigned hash : 24;
+ unsigned flag : 8;
+#define LINE_COMMON 1
+#define LINE_PATCHED 2
+};
+
+/*
+ * This represents a "file", which is an array of "lines".
+ */
+struct image {
+ char *buf;
+ size_t len;
+ size_t nr;
+ size_t alloc;
+ struct line *line_allocated;
+ struct line *line;
+};
+
+/*
+ * Records filenames that have been touched, in order to handle
+ * the case where more than one patches touch the same file.
+ */
+
+static struct string_list fn_table;
+
+static uint32_t hash_line(const char *cp, size_t len)
+{
+ size_t i;
+ uint32_t h;
+ for (i = 0, h = 0; i < len; i++) {
+ if (!isspace(cp[i])) {
+ h = h * 3 + (cp[i] & 0xff);
+ }
+ }
+ return h;
+}
+
+/*
+ * Compare lines s1 of length n1 and s2 of length n2, ignoring
+ * whitespace difference. Returns 1 if they match, 0 otherwise
+ */
+static int fuzzy_matchlines(const char *s1, size_t n1,
+ const char *s2, size_t n2)
+{
+ const char *last1 = s1 + n1 - 1;
+ const char *last2 = s2 + n2 - 1;
+ int result = 0;
+
+ /* ignore line endings */
+ while ((*last1 == '\r') || (*last1 == '\n'))
+ last1--;
+ while ((*last2 == '\r') || (*last2 == '\n'))
+ last2--;
+
+ /* skip leading whitespaces, if both begin with whitespace */
+ if (s1 <= last1 && s2 <= last2 && isspace(*s1) && isspace(*s2)) {
+ while (isspace(*s1) && (s1 <= last1))
+ s1++;
+ while (isspace(*s2) && (s2 <= last2))
+ s2++;
+ }
+ /* early return if both lines are empty */
+ if ((s1 > last1) && (s2 > last2))
+ return 1;
+ while (!result) {
+ result = *s1++ - *s2++;
+ /*
+ * Skip whitespace inside. We check for whitespace on
+ * both buffers because we don't want "a b" to match
+ * "ab"
+ */
+ if (isspace(*s1) && isspace(*s2)) {
+ while (isspace(*s1) && s1 <= last1)
+ s1++;
+ while (isspace(*s2) && s2 <= last2)
+ s2++;
+ }
+ /*
+ * If we reached the end on one side only,
+ * lines don't match
+ */
+ if (
+ ((s2 > last2) && (s1 <= last1)) ||
+ ((s1 > last1) && (s2 <= last2)))
+ return 0;
+ if ((s1 > last1) && (s2 > last2))
+ break;
+ }
+
+ return !result;
+}
+
+static void add_line_info(struct image *img, const char *bol, size_t len, unsigned flag)
+{
+ ALLOC_GROW(img->line_allocated, img->nr + 1, img->alloc);
+ img->line_allocated[img->nr].len = len;
+ img->line_allocated[img->nr].hash = hash_line(bol, len);
+ img->line_allocated[img->nr].flag = flag;
+ img->nr++;
+}
+
+/*
+ * "buf" has the file contents to be patched (read from various sources).
+ * attach it to "image" and add line-based index to it.
+ * "image" now owns the "buf".
+ */
+static void prepare_image(struct image *image, char *buf, size_t len,
+ int prepare_linetable)
+{
+ const char *cp, *ep;
+
+ memset(image, 0, sizeof(*image));
+ image->buf = buf;
+ image->len = len;
+
+ if (!prepare_linetable)
+ return;
+
+ ep = image->buf + image->len;
+ cp = image->buf;
+ while (cp < ep) {
+ const char *next;
+ for (next = cp; next < ep && *next != '\n'; next++)
+ ;
+ if (next < ep)
+ next++;
+ add_line_info(image, cp, next - cp, 0);
+ cp = next;
+ }
+ image->line = image->line_allocated;
+}
+
+static void clear_image(struct image *image)
+{
+ free(image->buf);
+ free(image->line_allocated);
+ memset(image, 0, sizeof(*image));
+}
+
+/* fmt must contain _one_ %s and no other substitution */
+static void say_patch_name(FILE *output, const char *fmt, struct patch *patch)
+{
+ struct strbuf sb = STRBUF_INIT;
+
+ if (patch->old_name && patch->new_name &&
+ strcmp(patch->old_name, patch->new_name)) {
+ quote_c_style(patch->old_name, &sb, NULL, 0);
+ strbuf_addstr(&sb, " => ");
+ quote_c_style(patch->new_name, &sb, NULL, 0);
+ } else {
+ const char *n = patch->new_name;
+ if (!n)
+ n = patch->old_name;
+ quote_c_style(n, &sb, NULL, 0);
+ }
+ fprintf(output, fmt, sb.buf);
+ fputc('\n', output);
+ strbuf_release(&sb);
+}
+
+#define SLOP (16)
+
+static void read_patch_file(struct strbuf *sb, int fd)
+{
+ if (strbuf_read(sb, fd, 0) < 0)
+ die_errno("git apply: failed to read");
+
+ /*
+ * Make sure that we have some slop in the buffer
+ * so that we can do speculative "memcmp" etc, and
+ * see to it that it is NUL-filled.
+ */
+ strbuf_grow(sb, SLOP);
+ memset(sb->buf + sb->len, 0, SLOP);
+}
+
+static unsigned long linelen(const char *buffer, unsigned long size)
+{
+ unsigned long len = 0;
+ while (size--) {
+ len++;
+ if (*buffer++ == '\n')
+ break;
+ }
+ return len;
+}
+
+static int is_dev_null(const char *str)
+{
+ return skip_prefix(str, "/dev/null", &str) && isspace(*str);
+}
+
+#define TERM_SPACE 1
+#define TERM_TAB 2
+
+static int name_terminate(const char *name, int namelen, int c, int terminate)
+{
+ if (c == ' ' && !(terminate & TERM_SPACE))
+ return 0;
+ if (c == '\t' && !(terminate & TERM_TAB))
+ return 0;
+
+ return 1;
+}
+
+/* remove double slashes to make --index work with such filenames */
+static char *squash_slash(char *name)
+{
+ int i = 0, j = 0;
+
+ if (!name)
+ return NULL;
+
+ while (name[i]) {
+ if ((name[j++] = name[i++]) == '/')
+ while (name[i] == '/')
+ i++;
+ }
+ name[j] = '\0';
+ return name;
+}
+
+static char *find_name_gnu(const char *line, const char *def, int p_value)
+{
+ struct strbuf name = STRBUF_INIT;
+ char *cp;
+
+ /*
+ * Proposed "new-style" GNU patch/diff format; see
+ * http://marc.info/?l=git&m=112927316408690&w=2
+ */
+ if (unquote_c_style(&name, line, NULL)) {
+ strbuf_release(&name);
+ return NULL;
+ }
+
+ for (cp = name.buf; p_value; p_value--) {
+ cp = strchr(cp, '/');
+ if (!cp) {
+ strbuf_release(&name);
+ return NULL;
+ }
+ cp++;
+ }
+
+ strbuf_remove(&name, 0, cp - name.buf);
+ if (root)
+ strbuf_insert(&name, 0, root, root_len);
+ return squash_slash(strbuf_detach(&name, NULL));
+}
+
+static size_t sane_tz_len(const char *line, size_t len)
+{
+ const char *tz, *p;
+
+ if (len < strlen(" +0500") || line[len-strlen(" +0500")] != ' ')
+ return 0;
+ tz = line + len - strlen(" +0500");
+
+ if (tz[1] != '+' && tz[1] != '-')
+ return 0;
+
+ for (p = tz + 2; p != line + len; p++)
+ if (!isdigit(*p))
+ return 0;
+
+ return line + len - tz;
+}
+
+static size_t tz_with_colon_len(const char *line, size_t len)
+{
+ const char *tz, *p;
+
+ if (len < strlen(" +08:00") || line[len - strlen(":00")] != ':')
+ return 0;
+ tz = line + len - strlen(" +08:00");
+
+ if (tz[0] != ' ' || (tz[1] != '+' && tz[1] != '-'))
+ return 0;
+ p = tz + 2;
+ if (!isdigit(*p++) || !isdigit(*p++) || *p++ != ':' ||
+ !isdigit(*p++) || !isdigit(*p++))
+ return 0;
+
+ return line + len - tz;
+}
+
+static size_t date_len(const char *line, size_t len)
+{
+ const char *date, *p;
+
+ if (len < strlen("72-02-05") || line[len-strlen("-05")] != '-')
+ return 0;
+ p = date = line + len - strlen("72-02-05");
+
+ if (!isdigit(*p++) || !isdigit(*p++) || *p++ != '-' ||
+ !isdigit(*p++) || !isdigit(*p++) || *p++ != '-' ||
+ !isdigit(*p++) || !isdigit(*p++)) /* Not a date. */
+ return 0;
+
+ if (date - line >= strlen("19") &&
+ isdigit(date[-1]) && isdigit(date[-2])) /* 4-digit year */
+ date -= strlen("19");
+
+ return line + len - date;
+}
+
+static size_t short_time_len(const char *line, size_t len)
+{
+ const char *time, *p;
+
+ if (len < strlen(" 07:01:32") || line[len-strlen(":32")] != ':')
+ return 0;
+ p = time = line + len - strlen(" 07:01:32");
+
+ /* Permit 1-digit hours? */
+ if (*p++ != ' ' ||
+ !isdigit(*p++) || !isdigit(*p++) || *p++ != ':' ||
+ !isdigit(*p++) || !isdigit(*p++) || *p++ != ':' ||
+ !isdigit(*p++) || !isdigit(*p++)) /* Not a time. */
+ return 0;
+
+ return line + len - time;
+}
+
+static size_t fractional_time_len(const char *line, size_t len)
+{
+ const char *p;
+ size_t n;
+
+ /* Expected format: 19:41:17.620000023 */
+ if (!len || !isdigit(line[len - 1]))
+ return 0;
+ p = line + len - 1;
+
+ /* Fractional seconds. */
+ while (p > line && isdigit(*p))
+ p--;
+ if (*p != '.')
+ return 0;
+
+ /* Hours, minutes, and whole seconds. */
+ n = short_time_len(line, p - line);
+ if (!n)
+ return 0;
+
+ return line + len - p + n;
+}
+
+static size_t trailing_spaces_len(const char *line, size_t len)
+{
+ const char *p;
+
+ /* Expected format: ' ' x (1 or more) */
+ if (!len || line[len - 1] != ' ')
+ return 0;
+
+ p = line + len;
+ while (p != line) {
+ p--;
+ if (*p != ' ')
+ return line + len - (p + 1);
+ }
+
+ /* All spaces! */
+ return len;
+}
+
+static size_t diff_timestamp_len(const char *line, size_t len)
+{
+ const char *end = line + len;
+ size_t n;
+
+ /*
+ * Posix: 2010-07-05 19:41:17
+ * GNU: 2010-07-05 19:41:17.620000023 -0500
+ */
+
+ if (!isdigit(end[-1]))
+ return 0;
+
+ n = sane_tz_len(line, end - line);
+ if (!n)
+ n = tz_with_colon_len(line, end - line);
+ end -= n;
+
+ n = short_time_len(line, end - line);
+ if (!n)
+ n = fractional_time_len(line, end - line);
+ end -= n;
+
+ n = date_len(line, end - line);
+ if (!n) /* No date. Too bad. */
+ return 0;
+ end -= n;
+
+ if (end == line) /* No space before date. */
+ return 0;
+ if (end[-1] == '\t') { /* Success! */
+ end--;
+ return line + len - end;
+ }
+ if (end[-1] != ' ') /* No space before date. */
+ return 0;
+
+ /* Whitespace damage. */
+ end -= trailing_spaces_len(line, end - line);
+ return line + len - end;
+}
+
+static char *find_name_common(const char *line, const char *def,
+ int p_value, const char *end, int terminate)
+{
+ int len;
+ const char *start = NULL;
+
+ if (p_value == 0)
+ start = line;
+ while (line != end) {
+ char c = *line;
+
+ if (!end && isspace(c)) {
+ if (c == '\n')
+ break;
+ if (name_terminate(start, line-start, c, terminate))
+ break;
+ }
+ line++;
+ if (c == '/' && !--p_value)
+ start = line;
+ }
+ if (!start)
+ return squash_slash(xstrdup_or_null(def));
+ len = line - start;
+ if (!len)
+ return squash_slash(xstrdup_or_null(def));
+
+ /*
+ * Generally we prefer the shorter name, especially
+ * if the other one is just a variation of that with
+ * something else tacked on to the end (ie "file.orig"
+ * or "file~").
+ */
+ if (def) {
+ int deflen = strlen(def);
+ if (deflen < len && !strncmp(start, def, deflen))
+ return squash_slash(xstrdup(def));
+ }
+
+ if (root) {
+ char *ret = xmalloc(root_len + len + 1);
+ strcpy(ret, root);
+ memcpy(ret + root_len, start, len);
+ ret[root_len + len] = '\0';
+ return squash_slash(ret);
+ }
+
+ return squash_slash(xmemdupz(start, len));
+}
+
+static char *find_name(const char *line, char *def, int p_value, int terminate)
+{
+ if (*line == '"') {
+ char *name = find_name_gnu(line, def, p_value);
+ if (name)
+ return name;
+ }
+
+ return find_name_common(line, def, p_value, NULL, terminate);
+}
+
+static char *find_name_traditional(const char *line, char *def, int p_value)
+{
+ size_t len;
+ size_t date_len;
+
+ if (*line == '"') {
+ char *name = find_name_gnu(line, def, p_value);
+ if (name)
+ return name;
+ }
+
+ len = strchrnul(line, '\n') - line;
+ date_len = diff_timestamp_len(line, len);
+ if (!date_len)
+ return find_name_common(line, def, p_value, NULL, TERM_TAB);
+ len -= date_len;
+
+ return find_name_common(line, def, p_value, line + len, 0);
+}
+
+static int count_slashes(const char *cp)
+{
+ int cnt = 0;
+ char ch;
+
+ while ((ch = *cp++))
+ if (ch == '/')
+ cnt++;
+ return cnt;
+}
+
+/*
+ * Given the string after "--- " or "+++ ", guess the appropriate
+ * p_value for the given patch.
+ */
+static int guess_p_value(const char *nameline)
+{
+ char *name, *cp;
+ int val = -1;
+
+ if (is_dev_null(nameline))
+ return -1;
+ name = find_name_traditional(nameline, NULL, 0);
+ if (!name)
+ return -1;
+ cp = strchr(name, '/');
+ if (!cp)
+ val = 0;
+ else if (prefix) {
+ /*
+ * Does it begin with "a/$our-prefix" and such? Then this is
+ * very likely to apply to our directory.
+ */
+ if (!strncmp(name, prefix, prefix_length))
+ val = count_slashes(prefix);
+ else {
+ cp++;
+ if (!strncmp(cp, prefix, prefix_length))
+ val = count_slashes(prefix) + 1;
+ }
+ }
+ free(name);
+ return val;
+}
+
+/*
+ * Does the ---/+++ line has the POSIX timestamp after the last HT?
+ * GNU diff puts epoch there to signal a creation/deletion event. Is
+ * this such a timestamp?
+ */
+static int has_epoch_timestamp(const char *nameline)
+{
+ /*
+ * We are only interested in epoch timestamp; any non-zero
+ * fraction cannot be one, hence "(\.0+)?" in the regexp below.
+ * For the same reason, the date must be either 1969-12-31 or
+ * 1970-01-01, and the seconds part must be "00".
+ */
+ const char stamp_regexp[] =
+ "^(1969-12-31|1970-01-01)"
+ " "
+ "[0-2][0-9]:[0-5][0-9]:00(\\.0+)?"
+ " "
+ "([-+][0-2][0-9]:?[0-5][0-9])\n";
+ const char *timestamp = NULL, *cp, *colon;
+ static regex_t *stamp;
+ regmatch_t m[10];
+ int zoneoffset;
+ int hourminute;
+ int status;
+
+ for (cp = nameline; *cp != '\n'; cp++) {
+ if (*cp == '\t')
+ timestamp = cp + 1;
+ }
+ if (!timestamp)
+ return 0;
+ if (!stamp) {
+ stamp = xmalloc(sizeof(*stamp));
+ if (regcomp(stamp, stamp_regexp, REG_EXTENDED)) {
+ warning(_("Cannot prepare timestamp regexp %s"),
+ stamp_regexp);
+ return 0;
+ }
+ }
+
+ status = regexec(stamp, timestamp, ARRAY_SIZE(m), m, 0);
+ if (status) {
+ if (status != REG_NOMATCH)
+ warning(_("regexec returned %d for input: %s"),
+ status, timestamp);
+ return 0;
+ }
+
+ zoneoffset = strtol(timestamp + m[3].rm_so + 1, (char **) &colon, 10);
+ if (*colon == ':')
+ zoneoffset = zoneoffset * 60 + strtol(colon + 1, NULL, 10);
+ else
+ zoneoffset = (zoneoffset / 100) * 60 + (zoneoffset % 100);
+ if (timestamp[m[3].rm_so] == '-')
+ zoneoffset = -zoneoffset;
+
+ /*
+ * YYYY-MM-DD hh:mm:ss must be from either 1969-12-31
+ * (west of GMT) or 1970-01-01 (east of GMT)
+ */
+ if ((zoneoffset < 0 && memcmp(timestamp, "1969-12-31", 10)) ||
+ (0 <= zoneoffset && memcmp(timestamp, "1970-01-01", 10)))
+ return 0;
+
+ hourminute = (strtol(timestamp + 11, NULL, 10) * 60 +
+ strtol(timestamp + 14, NULL, 10) -
+ zoneoffset);
+
+ return ((zoneoffset < 0 && hourminute == 1440) ||
+ (0 <= zoneoffset && !hourminute));
+}
+
+/*
+ * Get the name etc info from the ---/+++ lines of a traditional patch header
+ *
+ * FIXME! The end-of-filename heuristics are kind of screwy. For existing
+ * files, we can happily check the index for a match, but for creating a
+ * new file we should try to match whatever "patch" does. I have no idea.
+ */
+static void parse_traditional_patch(const char *first, const char *second, struct patch *patch)
+{
+ char *name;
+
+ first += 4; /* skip "--- " */
+ second += 4; /* skip "+++ " */
+ if (!p_value_known) {
+ int p, q;
+ p = guess_p_value(first);
+ q = guess_p_value(second);
+ if (p < 0) p = q;
+ if (0 <= p && p == q) {
+ p_value = p;
+ p_value_known = 1;
+ }
+ }
+ if (is_dev_null(first)) {
+ patch->is_new = 1;
+ patch->is_delete = 0;
+ name = find_name_traditional(second, NULL, p_value);
+ patch->new_name = name;
+ } else if (is_dev_null(second)) {
+ patch->is_new = 0;
+ patch->is_delete = 1;
+ name = find_name_traditional(first, NULL, p_value);
+ patch->old_name = name;
+ } else {
+ char *first_name;
+ first_name = find_name_traditional(first, NULL, p_value);
+ name = find_name_traditional(second, first_name, p_value);
+ free(first_name);
+ if (has_epoch_timestamp(first)) {
+ patch->is_new = 1;
+ patch->is_delete = 0;
+ patch->new_name = name;
+ } else if (has_epoch_timestamp(second)) {
+ patch->is_new = 0;
+ patch->is_delete = 1;
+ patch->old_name = name;
+ } else {
+ patch->old_name = name;
+ patch->new_name = xstrdup_or_null(name);
+ }
+ }
+ if (!name)
+ die(_("unable to find filename in patch at line %d"), linenr);
+}
+
+static int gitdiff_hdrend(const char *line, struct patch *patch)
+{
+ return -1;
+}
+
+/*
+ * We're anal about diff header consistency, to make
+ * sure that we don't end up having strange ambiguous
+ * patches floating around.
+ *
+ * As a result, gitdiff_{old|new}name() will check
+ * their names against any previous information, just
+ * to make sure..
+ */
+#define DIFF_OLD_NAME 0
+#define DIFF_NEW_NAME 1
+
+static char *gitdiff_verify_name(const char *line, int isnull, char *orig_name, int side)
+{
+ if (!orig_name && !isnull)
+ return find_name(line, NULL, p_value, TERM_TAB);
+
+ if (orig_name) {
+ int len;
+ const char *name;
+ char *another;
+ name = orig_name;
+ len = strlen(name);
+ if (isnull)
+ die(_("git apply: bad git-diff - expected /dev/null, got %s on line %d"), name, linenr);
+ another = find_name(line, NULL, p_value, TERM_TAB);
+ if (!another || memcmp(another, name, len + 1))
+ die((side == DIFF_NEW_NAME) ?
+ _("git apply: bad git-diff - inconsistent new filename on line %d") :
+ _("git apply: bad git-diff - inconsistent old filename on line %d"), linenr);
+ free(another);
+ return orig_name;
+ }
+ else {
+ /* expect "/dev/null" */
+ if (memcmp("/dev/null", line, 9) || line[9] != '\n')
+ die(_("git apply: bad git-diff - expected /dev/null on line %d"), linenr);
+ return NULL;
+ }
+}
+
+static int gitdiff_oldname(const char *line, struct patch *patch)
+{
+ char *orig = patch->old_name;
+ patch->old_name = gitdiff_verify_name(line, patch->is_new, patch->old_name,
+ DIFF_OLD_NAME);
+ if (orig != patch->old_name)
+ free(orig);
+ return 0;
+}
+
+static int gitdiff_newname(const char *line, struct patch *patch)
+{
+ char *orig = patch->new_name;
+ patch->new_name = gitdiff_verify_name(line, patch->is_delete, patch->new_name,
+ DIFF_NEW_NAME);
+ if (orig != patch->new_name)
+ free(orig);
+ return 0;
+}
+
+static int gitdiff_oldmode(const char *line, struct patch *patch)
+{
+ patch->old_mode = strtoul(line, NULL, 8);
+ return 0;
+}
+
+static int gitdiff_newmode(const char *line, struct patch *patch)
+{
+ patch->new_mode = strtoul(line, NULL, 8);
+ return 0;
+}
+
+static int gitdiff_delete(const char *line, struct patch *patch)
+{
+ patch->is_delete = 1;
+ free(patch->old_name);
+ patch->old_name = xstrdup_or_null(patch->def_name);
+ return gitdiff_oldmode(line, patch);
+}
+
+static int gitdiff_newfile(const char *line, struct patch *patch)
+{
+ patch->is_new = 1;
+ free(patch->new_name);
+ patch->new_name = xstrdup_or_null(patch->def_name);
+ return gitdiff_newmode(line, patch);
+}
+
+static int gitdiff_copysrc(const char *line, struct patch *patch)
+{
+ patch->is_copy = 1;
+ free(patch->old_name);
+ patch->old_name = find_name(line, NULL, p_value ? p_value - 1 : 0, 0);
+ return 0;
+}
+
+static int gitdiff_copydst(const char *line, struct patch *patch)
+{
+ patch->is_copy = 1;
+ free(patch->new_name);
+ patch->new_name = find_name(line, NULL, p_value ? p_value - 1 : 0, 0);
+ return 0;
+}
+
+static int gitdiff_renamesrc(const char *line, struct patch *patch)
+{
+ patch->is_rename = 1;
+ free(patch->old_name);
+ patch->old_name = find_name(line, NULL, p_value ? p_value - 1 : 0, 0);
+ return 0;
+}
+
+static int gitdiff_renamedst(const char *line, struct patch *patch)
+{
+ patch->is_rename = 1;
+ free(patch->new_name);
+ patch->new_name = find_name(line, NULL, p_value ? p_value - 1 : 0, 0);
+ return 0;
+}
+
+static int gitdiff_similarity(const char *line, struct patch *patch)
+{
+ unsigned long val = strtoul(line, NULL, 10);
+ if (val <= 100)
+ patch->score = val;
+ return 0;
+}
+
+static int gitdiff_dissimilarity(const char *line, struct patch *patch)
+{
+ unsigned long val = strtoul(line, NULL, 10);
+ if (val <= 100)
+ patch->score = val;
+ return 0;
+}
+
+static int gitdiff_index(const char *line, struct patch *patch)
+{
+ /*
+ * index line is N hexadecimal, "..", N hexadecimal,
+ * and optional space with octal mode.
+ */
+ const char *ptr, *eol;
+ int len;
+
+ ptr = strchr(line, '.');
+ if (!ptr || ptr[1] != '.' || 40 < ptr - line)
+ return 0;
+ len = ptr - line;
+ memcpy(patch->old_sha1_prefix, line, len);
+ patch->old_sha1_prefix[len] = 0;
+
+ line = ptr + 2;
+ ptr = strchr(line, ' ');
+ eol = strchrnul(line, '\n');
+
+ if (!ptr || eol < ptr)
+ ptr = eol;
+ len = ptr - line;
+
+ if (40 < len)
+ return 0;
+ memcpy(patch->new_sha1_prefix, line, len);
+ patch->new_sha1_prefix[len] = 0;
+ if (*ptr == ' ')
+ patch->old_mode = strtoul(ptr+1, NULL, 8);
+ return 0;
+}
+
+/*
+ * This is normal for a diff that doesn't change anything: we'll fall through
+ * into the next diff. Tell the parser to break out.
+ */
+static int gitdiff_unrecognized(const char *line, struct patch *patch)
+{
+ return -1;
+}
+
+/*
+ * Skip p_value leading components from "line"; as we do not accept
+ * absolute paths, return NULL in that case.
+ */
+static const char *skip_tree_prefix(const char *line, int llen)
+{
+ int nslash;
+ int i;
+
+ if (!p_value)
+ return (llen && line[0] == '/') ? NULL : line;
+
+ nslash = p_value;
+ for (i = 0; i < llen; i++) {
+ int ch = line[i];
+ if (ch == '/' && --nslash <= 0)
+ return (i == 0) ? NULL : &line[i + 1];
+ }
+ return NULL;
+}
+
+/*
+ * This is to extract the same name that appears on "diff --git"
+ * line. We do not find and return anything if it is a rename
+ * patch, and it is OK because we will find the name elsewhere.
+ * We need to reliably find name only when it is mode-change only,
+ * creation or deletion of an empty file. In any of these cases,
+ * both sides are the same name under a/ and b/ respectively.
+ */
+static char *git_header_name(const char *line, int llen)
+{
+ const char *name;
+ const char *second = NULL;
+ size_t len, line_len;
+
+ line += strlen("diff --git ");
+ llen -= strlen("diff --git ");
+
+ if (*line == '"') {
+ const char *cp;
+ struct strbuf first = STRBUF_INIT;
+ struct strbuf sp = STRBUF_INIT;
+
+ if (unquote_c_style(&first, line, &second))
+ goto free_and_fail1;
+
+ /* strip the a/b prefix including trailing slash */
+ cp = skip_tree_prefix(first.buf, first.len);
+ if (!cp)
+ goto free_and_fail1;
+ strbuf_remove(&first, 0, cp - first.buf);
+
+ /*
+ * second points at one past closing dq of name.
+ * find the second name.
+ */
+ while ((second < line + llen) && isspace(*second))
+ second++;
+
+ if (line + llen <= second)
+ goto free_and_fail1;
+ if (*second == '"') {
+ if (unquote_c_style(&sp, second, NULL))
+ goto free_and_fail1;
+ cp = skip_tree_prefix(sp.buf, sp.len);
+ if (!cp)
+ goto free_and_fail1;
+ /* They must match, otherwise ignore */
+ if (strcmp(cp, first.buf))
+ goto free_and_fail1;
+ strbuf_release(&sp);
+ return strbuf_detach(&first, NULL);
+ }
+
+ /* unquoted second */
+ cp = skip_tree_prefix(second, line + llen - second);
+ if (!cp)
+ goto free_and_fail1;
+ if (line + llen - cp != first.len ||
+ memcmp(first.buf, cp, first.len))
+ goto free_and_fail1;
+ return strbuf_detach(&first, NULL);
+
+ free_and_fail1:
+ strbuf_release(&first);
+ strbuf_release(&sp);
+ return NULL;
+ }
+
+ /* unquoted first name */
+ name = skip_tree_prefix(line, llen);
+ if (!name)
+ return NULL;
+
+ /*
+ * since the first name is unquoted, a dq if exists must be
+ * the beginning of the second name.
+ */
+ for (second = name; second < line + llen; second++) {
+ if (*second == '"') {
+ struct strbuf sp = STRBUF_INIT;
+ const char *np;
+
+ if (unquote_c_style(&sp, second, NULL))
+ goto free_and_fail2;
+
+ np = skip_tree_prefix(sp.buf, sp.len);
+ if (!np)
+ goto free_and_fail2;
+
+ len = sp.buf + sp.len - np;
+ if (len < second - name &&
+ !strncmp(np, name, len) &&
+ isspace(name[len])) {
+ /* Good */
+ strbuf_remove(&sp, 0, np - sp.buf);
+ return strbuf_detach(&sp, NULL);
+ }
+
+ free_and_fail2:
+ strbuf_release(&sp);
+ return NULL;
+ }
+ }
+
+ /*
+ * Accept a name only if it shows up twice, exactly the same
+ * form.
+ */
+ second = strchr(name, '\n');
+ if (!second)
+ return NULL;
+ line_len = second - name;
+ for (len = 0 ; ; len++) {
+ switch (name[len]) {
+ default:
+ continue;
+ case '\n':
+ return NULL;
+ case '\t': case ' ':
+ /*
+ * Is this the separator between the preimage
+ * and the postimage pathname? Again, we are
+ * only interested in the case where there is
+ * no rename, as this is only to set def_name
+ * and a rename patch has the names elsewhere
+ * in an unambiguous form.
+ */
+ if (!name[len + 1])
+ return NULL; /* no postimage name */
+ second = skip_tree_prefix(name + len + 1,
+ line_len - (len + 1));
+ if (!second)
+ return NULL;
+ /*
+ * Does len bytes starting at "name" and "second"
+ * (that are separated by one HT or SP we just
+ * found) exactly match?
+ */
+ if (second[len] == '\n' && !strncmp(name, second, len))
+ return xmemdupz(name, len);
+ }
+ }
+}
+
+/* Verify that we recognize the lines following a git header */
+static int parse_git_header(const char *line, int len, unsigned int size, struct patch *patch)
+{
+ unsigned long offset;
+
+ /* A git diff has explicit new/delete information, so we don't guess */
+ patch->is_new = 0;
+ patch->is_delete = 0;
+
+ /*
+ * Some things may not have the old name in the
+ * rest of the headers anywhere (pure mode changes,
+ * or removing or adding empty files), so we get
+ * the default name from the header.
+ */
+ patch->def_name = git_header_name(line, len);
+ if (patch->def_name && root) {
+ char *s = xstrfmt("%s%s", root, patch->def_name);
+ free(patch->def_name);
+ patch->def_name = s;
+ }
+
+ line += len;
+ size -= len;
+ linenr++;
+ for (offset = len ; size > 0 ; offset += len, size -= len, line += len, linenr++) {
+ static const struct opentry {
+ const char *str;
+ int (*fn)(const char *, struct patch *);
+ } optable[] = {
+ { "@@ -", gitdiff_hdrend },
+ { "--- ", gitdiff_oldname },
+ { "+++ ", gitdiff_newname },
+ { "old mode ", gitdiff_oldmode },
+ { "new mode ", gitdiff_newmode },
+ { "deleted file mode ", gitdiff_delete },
+ { "new file mode ", gitdiff_newfile },
+ { "copy from ", gitdiff_copysrc },
+ { "copy to ", gitdiff_copydst },
+ { "rename old ", gitdiff_renamesrc },
+ { "rename new ", gitdiff_renamedst },
+ { "rename from ", gitdiff_renamesrc },
+ { "rename to ", gitdiff_renamedst },
+ { "similarity index ", gitdiff_similarity },
+ { "dissimilarity index ", gitdiff_dissimilarity },
+ { "index ", gitdiff_index },
+ { "", gitdiff_unrecognized },
+ };
+ int i;
+
+ len = linelen(line, size);
+ if (!len || line[len-1] != '\n')
+ break;
+ for (i = 0; i < ARRAY_SIZE(optable); i++) {
+ const struct opentry *p = optable + i;
+ int oplen = strlen(p->str);
+ if (len < oplen || memcmp(p->str, line, oplen))
+ continue;
+ if (p->fn(line + oplen, patch) < 0)
+ return offset;
+ break;
+ }
+ }
+
+ return offset;
+}
+
+static int parse_num(const char *line, unsigned long *p)
+{
+ char *ptr;
+
+ if (!isdigit(*line))
+ return 0;
+ *p = strtoul(line, &ptr, 10);
+ return ptr - line;
+}
+
+static int parse_range(const char *line, int len, int offset, const char *expect,
+ unsigned long *p1, unsigned long *p2)
+{
+ int digits, ex;
+
+ if (offset < 0 || offset >= len)
+ return -1;
+ line += offset;
+ len -= offset;
+
+ digits = parse_num(line, p1);
+ if (!digits)
+ return -1;
+
+ offset += digits;
+ line += digits;
+ len -= digits;
+
+ *p2 = 1;
+ if (*line == ',') {
+ digits = parse_num(line+1, p2);
+ if (!digits)
+ return -1;
+
+ offset += digits+1;
+ line += digits+1;
+ len -= digits+1;
+ }
+
+ ex = strlen(expect);
+ if (ex > len)
+ return -1;
+ if (memcmp(line, expect, ex))
+ return -1;
+
+ return offset + ex;
+}
+
+static void recount_diff(const char *line, int size, struct fragment *fragment)
+{
+ int oldlines = 0, newlines = 0, ret = 0;
+
+ if (size < 1) {
+ warning("recount: ignore empty hunk");
+ return;
+ }
+
+ for (;;) {
+ int len = linelen(line, size);
+ size -= len;
+ line += len;
+
+ if (size < 1)
+ break;
+
+ switch (*line) {
+ case ' ': case '\n':
+ newlines++;
+ /* fall through */
+ case '-':
+ oldlines++;
+ continue;
+ case '+':
+ newlines++;
+ continue;
+ case '\\':
+ continue;
+ case '@':
+ ret = size < 3 || !starts_with(line, "@@ ");
+ break;
+ case 'd':
+ ret = size < 5 || !starts_with(line, "diff ");
+ break;
+ default:
+ ret = -1;
+ break;
+ }
+ if (ret) {
+ warning(_("recount: unexpected line: %.*s"),
+ (int)linelen(line, size), line);
+ return;
+ }
+ break;
+ }
+ fragment->oldlines = oldlines;
+ fragment->newlines = newlines;
+}
+
+/*
+ * Parse a unified diff fragment header of the
+ * form "@@ -a,b +c,d @@"
+ */
+static int parse_fragment_header(const char *line, int len, struct fragment *fragment)
+{
+ int offset;
+
+ if (!len || line[len-1] != '\n')
+ return -1;
+
+ /* Figure out the number of lines in a fragment */
+ offset = parse_range(line, len, 4, " +", &fragment->oldpos, &fragment->oldlines);
+ offset = parse_range(line, len, offset, " @@", &fragment->newpos, &fragment->newlines);
+
+ return offset;
+}
+
+static int find_header(const char *line, unsigned long size, int *hdrsize, struct patch *patch)
+{
+ unsigned long offset, len;
+
+ patch->is_toplevel_relative = 0;
+ patch->is_rename = patch->is_copy = 0;
+ patch->is_new = patch->is_delete = -1;
+ patch->old_mode = patch->new_mode = 0;
+ patch->old_name = patch->new_name = NULL;
+ for (offset = 0; size > 0; offset += len, size -= len, line += len, linenr++) {
+ unsigned long nextlen;
+
+ len = linelen(line, size);
+ if (!len)
+ break;
+
+ /* Testing this early allows us to take a few shortcuts.. */
+ if (len < 6)
+ continue;
+
+ /*
+ * Make sure we don't find any unconnected patch fragments.
+ * That's a sign that we didn't find a header, and that a
+ * patch has become corrupted/broken up.
+ */
+ if (!memcmp("@@ -", line, 4)) {
+ struct fragment dummy;
+ if (parse_fragment_header(line, len, &dummy) < 0)
+ continue;
+ die(_("patch fragment without header at line %d: %.*s"),
+ linenr, (int)len-1, line);
+ }
+
+ if (size < len + 6)
+ break;
+
+ /*
+ * Git patch? It might not have a real patch, just a rename
+ * or mode change, so we handle that specially
+ */
+ if (!memcmp("diff --git ", line, 11)) {
+ int git_hdr_len = parse_git_header(line, len, size, patch);
+ if (git_hdr_len <= len)
+ continue;
+ if (!patch->old_name && !patch->new_name) {
+ if (!patch->def_name)
+ die(Q_("git diff header lacks filename information when removing "
+ "%d leading pathname component (line %d)",
+ "git diff header lacks filename information when removing "
+ "%d leading pathname components (line %d)",
+ p_value),
+ p_value, linenr);
+ patch->old_name = xstrdup(patch->def_name);
+ patch->new_name = xstrdup(patch->def_name);
+ }
+ if (!patch->is_delete && !patch->new_name)
+ die("git diff header lacks filename information "
+ "(line %d)", linenr);
+ patch->is_toplevel_relative = 1;
+ *hdrsize = git_hdr_len;
+ return offset;
+ }
+
+ /* --- followed by +++ ? */
+ if (memcmp("--- ", line, 4) || memcmp("+++ ", line + len, 4))
+ continue;
+
+ /*
+ * We only accept unified patches, so we want it to
+ * at least have "@@ -a,b +c,d @@\n", which is 14 chars
+ * minimum ("@@ -0,0 +1 @@\n" is the shortest).
+ */
+ nextlen = linelen(line + len, size - len);
+ if (size < nextlen + 14 || memcmp("@@ -", line + len + nextlen, 4))
+ continue;
+
+ /* Ok, we'll consider it a patch */
+ parse_traditional_patch(line, line+len, patch);
+ *hdrsize = len + nextlen;
+ linenr += 2;
+ return offset;
+ }
+ return -1;
+}
+
+static void record_ws_error(unsigned result, const char *line, int len, int linenr)
+{
+ char *err;
+
+ if (!result)
+ return;
+
+ whitespace_error++;
+ if (squelch_whitespace_errors &&
+ squelch_whitespace_errors < whitespace_error)
+ return;
+
+ err = whitespace_error_string(result);
+ fprintf(stderr, "%s:%d: %s.\n%.*s\n",
+ patch_input_file, linenr, err, len, line);
+ free(err);
+}
+
+static void check_whitespace(const char *line, int len, unsigned ws_rule)
+{
+ unsigned result = ws_check(line + 1, len - 1, ws_rule);
+
+ record_ws_error(result, line + 1, len - 2, linenr);
+}
+
+/*
+ * Parse a unified diff. Note that this really needs to parse each
+ * fragment separately, since the only way to know the difference
+ * between a "---" that is part of a patch, and a "---" that starts
+ * the next patch is to look at the line counts..
+ */
+static int parse_fragment(const char *line, unsigned long size,
+ struct patch *patch, struct fragment *fragment)
+{
+ int added, deleted;
+ int len = linelen(line, size), offset;
+ unsigned long oldlines, newlines;
+ unsigned long leading, trailing;
+
+ offset = parse_fragment_header(line, len, fragment);
+ if (offset < 0)
+ return -1;
+ if (offset > 0 && patch->recount)
+ recount_diff(line + offset, size - offset, fragment);
+ oldlines = fragment->oldlines;
+ newlines = fragment->newlines;
+ leading = 0;
+ trailing = 0;
+
+ /* Parse the thing.. */
+ line += len;
+ size -= len;
+ linenr++;
+ added = deleted = 0;
+ for (offset = len;
+ 0 < size;
+ offset += len, size -= len, line += len, linenr++) {
+ if (!oldlines && !newlines)
+ break;
+ len = linelen(line, size);
+ if (!len || line[len-1] != '\n')
+ return -1;
+ switch (*line) {
+ default:
+ return -1;
+ case '\n': /* newer GNU diff, an empty context line */
+ case ' ':
+ oldlines--;
+ newlines--;
+ if (!deleted && !added)
+ leading++;
+ trailing++;
+ if (!apply_in_reverse &&
+ ws_error_action == correct_ws_error)
+ check_whitespace(line, len, patch->ws_rule);
+ break;
+ case '-':
+ if (apply_in_reverse &&
+ ws_error_action != nowarn_ws_error)
+ check_whitespace(line, len, patch->ws_rule);
+ deleted++;
+ oldlines--;
+ trailing = 0;
+ break;
+ case '+':
+ if (!apply_in_reverse &&
+ ws_error_action != nowarn_ws_error)
+ check_whitespace(line, len, patch->ws_rule);
+ added++;
+ newlines--;
+ trailing = 0;
+ break;
+
+ /*
+ * We allow "\ No newline at end of file". Depending
+ * on locale settings when the patch was produced we
+ * don't know what this line looks like. The only
+ * thing we do know is that it begins with "\ ".
+ * Checking for 12 is just for sanity check -- any
+ * l10n of "\ No newline..." is at least that long.
+ */
+ case '\\':
+ if (len < 12 || memcmp(line, "\\ ", 2))
+ return -1;
+ break;
+ }
+ }
+ if (oldlines || newlines)
+ return -1;
+ fragment->leading = leading;
+ fragment->trailing = trailing;
+
+ /*
+ * If a fragment ends with an incomplete line, we failed to include
+ * it in the above loop because we hit oldlines == newlines == 0
+ * before seeing it.
+ */
+ if (12 < size && !memcmp(line, "\\ ", 2))
+ offset += linelen(line, size);
+
+ patch->lines_added += added;
+ patch->lines_deleted += deleted;
+
+ if (0 < patch->is_new && oldlines)
+ return error(_("new file depends on old contents"));
+ if (0 < patch->is_delete && newlines)
+ return error(_("deleted file still has contents"));
+ return offset;
+}
+
+/*
+ * We have seen "diff --git a/... b/..." header (or a traditional patch
+ * header). Read hunks that belong to this patch into fragments and hang
+ * them to the given patch structure.
+ *
+ * The (fragment->patch, fragment->size) pair points into the memory given
+ * by the caller, not a copy, when we return.
+ */
+static int parse_single_patch(const char *line, unsigned long size, struct patch *patch)
+{
+ unsigned long offset = 0;
+ unsigned long oldlines = 0, newlines = 0, context = 0;
+ struct fragment **fragp = &patch->fragments;
+
+ while (size > 4 && !memcmp(line, "@@ -", 4)) {
+ struct fragment *fragment;
+ int len;
+
+ fragment = xcalloc(1, sizeof(*fragment));
+ fragment->linenr = linenr;
+ len = parse_fragment(line, size, patch, fragment);
+ if (len <= 0)
+ die(_("corrupt patch at line %d"), linenr);
+ fragment->patch = line;
+ fragment->size = len;
+ oldlines += fragment->oldlines;
+ newlines += fragment->newlines;
+ context += fragment->leading + fragment->trailing;
+
+ *fragp = fragment;
+ fragp = &fragment->next;
+
+ offset += len;
+ line += len;
+ size -= len;
+ }
+
+ /*
+ * If something was removed (i.e. we have old-lines) it cannot
+ * be creation, and if something was added it cannot be
+ * deletion. However, the reverse is not true; --unified=0
+ * patches that only add are not necessarily creation even
+ * though they do not have any old lines, and ones that only
+ * delete are not necessarily deletion.
+ *
+ * Unfortunately, a real creation/deletion patch do _not_ have
+ * any context line by definition, so we cannot safely tell it
+ * apart with --unified=0 insanity. At least if the patch has
+ * more than one hunk it is not creation or deletion.
+ */
+ if (patch->is_new < 0 &&
+ (oldlines || (patch->fragments && patch->fragments->next)))
+ patch->is_new = 0;
+ if (patch->is_delete < 0 &&
+ (newlines || (patch->fragments && patch->fragments->next)))
+ patch->is_delete = 0;
+
+ if (0 < patch->is_new && oldlines)
+ die(_("new file %s depends on old contents"), patch->new_name);
+ if (0 < patch->is_delete && newlines)
+ die(_("deleted file %s still has contents"), patch->old_name);
+ if (!patch->is_delete && !newlines && context)
+ fprintf_ln(stderr,
+ _("** warning: "
+ "file %s becomes empty but is not deleted"),
+ patch->new_name);
+
+ return offset;
+}
+
+static inline int metadata_changes(struct patch *patch)
+{
+ return patch->is_rename > 0 ||
+ patch->is_copy > 0 ||
+ patch->is_new > 0 ||
+ patch->is_delete ||
+ (patch->old_mode && patch->new_mode &&
+ patch->old_mode != patch->new_mode);
+}
+
+static char *inflate_it(const void *data, unsigned long size,
+ unsigned long inflated_size)
+{
+ git_zstream stream;
+ void *out;
+ int st;
+
+ memset(&stream, 0, sizeof(stream));
+
+ stream.next_in = (unsigned char *)data;
+ stream.avail_in = size;
+ stream.next_out = out = xmalloc(inflated_size);
+ stream.avail_out = inflated_size;
+ git_inflate_init(&stream);
+ st = git_inflate(&stream, Z_FINISH);
+ git_inflate_end(&stream);
+ if ((st != Z_STREAM_END) || stream.total_out != inflated_size) {
+ free(out);
+ return NULL;
+ }
+ return out;
+}
+
+/*
+ * Read a binary hunk and return a new fragment; fragment->patch
+ * points at an allocated memory that the caller must free, so
+ * it is marked as "->free_patch = 1".
+ */
+static struct fragment *parse_binary_hunk(char **buf_p,
+ unsigned long *sz_p,
+ int *status_p,
+ int *used_p)
+{
+ /*
+ * Expect a line that begins with binary patch method ("literal"
+ * or "delta"), followed by the length of data before deflating.
+ * a sequence of 'length-byte' followed by base-85 encoded data
+ * should follow, terminated by a newline.
+ *
+ * Each 5-byte sequence of base-85 encodes up to 4 bytes,
+ * and we would limit the patch line to 66 characters,
+ * so one line can fit up to 13 groups that would decode
+ * to 52 bytes max. The length byte 'A'-'Z' corresponds
+ * to 1-26 bytes, and 'a'-'z' corresponds to 27-52 bytes.
+ */
+ int llen, used;
+ unsigned long size = *sz_p;
+ char *buffer = *buf_p;
+ int patch_method;
+ unsigned long origlen;
+ char *data = NULL;
+ int hunk_size = 0;
+ struct fragment *frag;
+
+ llen = linelen(buffer, size);
+ used = llen;
+
+ *status_p = 0;
+
+ if (starts_with(buffer, "delta ")) {
+ patch_method = BINARY_DELTA_DEFLATED;
+ origlen = strtoul(buffer + 6, NULL, 10);
+ }
+ else if (starts_with(buffer, "literal ")) {
+ patch_method = BINARY_LITERAL_DEFLATED;
+ origlen = strtoul(buffer + 8, NULL, 10);
+ }
+ else
+ return NULL;
+
+ linenr++;
+ buffer += llen;
+ while (1) {
+ int byte_length, max_byte_length, newsize;
+ llen = linelen(buffer, size);
+ used += llen;
+ linenr++;
+ if (llen == 1) {
+ /* consume the blank line */
+ buffer++;
+ size--;
+ break;
+ }
+ /*
+ * Minimum line is "A00000\n" which is 7-byte long,
+ * and the line length must be multiple of 5 plus 2.
+ */
+ if ((llen < 7) || (llen-2) % 5)
+ goto corrupt;
+ max_byte_length = (llen - 2) / 5 * 4;
+ byte_length = *buffer;
+ if ('A' <= byte_length && byte_length <= 'Z')
+ byte_length = byte_length - 'A' + 1;
+ else if ('a' <= byte_length && byte_length <= 'z')
+ byte_length = byte_length - 'a' + 27;
+ else
+ goto corrupt;
+ /* if the input length was not multiple of 4, we would
+ * have filler at the end but the filler should never
+ * exceed 3 bytes
+ */
+ if (max_byte_length < byte_length ||
+ byte_length <= max_byte_length - 4)
+ goto corrupt;
+ newsize = hunk_size + byte_length;
+ data = xrealloc(data, newsize);
+ if (decode_85(data + hunk_size, buffer + 1, byte_length))
+ goto corrupt;
+ hunk_size = newsize;
+ buffer += llen;
+ size -= llen;
+ }
+
+ frag = xcalloc(1, sizeof(*frag));
+ frag->patch = inflate_it(data, hunk_size, origlen);
+ frag->free_patch = 1;
+ if (!frag->patch)
+ goto corrupt;
+ free(data);
+ frag->size = origlen;
+ *buf_p = buffer;
+ *sz_p = size;
+ *used_p = used;
+ frag->binary_patch_method = patch_method;
+ return frag;
+
+ corrupt:
+ free(data);
+ *status_p = -1;
+ error(_("corrupt binary patch at line %d: %.*s"),
+ linenr-1, llen-1, buffer);
+ return NULL;
+}
+
+static int parse_binary(char *buffer, unsigned long size, struct patch *patch)
+{
+ /*
+ * We have read "GIT binary patch\n"; what follows is a line
+ * that says the patch method (currently, either "literal" or
+ * "delta") and the length of data before deflating; a
+ * sequence of 'length-byte' followed by base-85 encoded data
+ * follows.
+ *
+ * When a binary patch is reversible, there is another binary
+ * hunk in the same format, starting with patch method (either
+ * "literal" or "delta") with the length of data, and a sequence
+ * of length-byte + base-85 encoded data, terminated with another
+ * empty line. This data, when applied to the postimage, produces
+ * the preimage.
+ */
+ struct fragment *forward;
+ struct fragment *reverse;
+ int status;
+ int used, used_1;
+
+ forward = parse_binary_hunk(&buffer, &size, &status, &used);
+ if (!forward && !status)
+ /* there has to be one hunk (forward hunk) */
+ return error(_("unrecognized binary patch at line %d"), linenr-1);
+ if (status)
+ /* otherwise we already gave an error message */
+ return status;
+
+ reverse = parse_binary_hunk(&buffer, &size, &status, &used_1);
+ if (reverse)
+ used += used_1;
+ else if (status) {
+ /*
+ * Not having reverse hunk is not an error, but having
+ * a corrupt reverse hunk is.
+ */
+ free((void*) forward->patch);
+ free(forward);
+ return status;
+ }
+ forward->next = reverse;
+ patch->fragments = forward;
+ patch->is_binary = 1;
+ return used;
+}
+
+static void prefix_one(char **name)
+{
+ char *old_name = *name;
+ if (!old_name)
+ return;
+ *name = xstrdup(prefix_filename(prefix, prefix_length, *name));
+ free(old_name);
+}
+
+static void prefix_patch(struct patch *p)
+{
+ if (!prefix || p->is_toplevel_relative)
+ return;
+ prefix_one(&p->new_name);
+ prefix_one(&p->old_name);
+}
+
+/*
+ * include/exclude
+ */
+
+static struct string_list limit_by_name;
+static int has_include;
+static void add_name_limit(const char *name, int exclude)
+{
+ struct string_list_item *it;
+
+ it = string_list_append(&limit_by_name, name);
+ it->util = exclude ? NULL : (void *) 1;
+}
+
+static int use_patch(struct patch *p)
+{
+ const char *pathname = p->new_name ? p->new_name : p->old_name;
+ int i;
+
+ /* Paths outside are not touched regardless of "--include" */
+ if (0 < prefix_length) {
+ int pathlen = strlen(pathname);
+ if (pathlen <= prefix_length ||
+ memcmp(prefix, pathname, prefix_length))
+ return 0;
+ }
+
+ /* See if it matches any of exclude/include rule */
+ for (i = 0; i < limit_by_name.nr; i++) {
+ struct string_list_item *it = &limit_by_name.items[i];
+ if (!wildmatch(it->string, pathname, 0, NULL))
+ return (it->util != NULL);
+ }
+
+ /*
+ * If we had any include, a path that does not match any rule is
+ * not used. Otherwise, we saw bunch of exclude rules (or none)
+ * and such a path is used.
+ */
+ return !has_include;
+}
+
+
+/*
+ * Read the patch text in "buffer" that extends for "size" bytes; stop
+ * reading after seeing a single patch (i.e. changes to a single file).
+ * Create fragments (i.e. patch hunks) and hang them to the given patch.
+ * Return the number of bytes consumed, so that the caller can call us
+ * again for the next patch.
+ */
+static int parse_chunk(char *buffer, unsigned long size, struct patch *patch)
+{
+ int hdrsize, patchsize;
+ int offset = find_header(buffer, size, &hdrsize, patch);
+
+ if (offset < 0)
+ return offset;
+
+ prefix_patch(patch);
+
+ if (!use_patch(patch))
+ patch->ws_rule = 0;
+ else
+ patch->ws_rule = whitespace_rule(patch->new_name
+ ? patch->new_name
+ : patch->old_name);
+
+ patchsize = parse_single_patch(buffer + offset + hdrsize,
+ size - offset - hdrsize, patch);
+
+ if (!patchsize) {
+ static const char git_binary[] = "GIT binary patch\n";
+ int hd = hdrsize + offset;
+ unsigned long llen = linelen(buffer + hd, size - hd);
+
+ if (llen == sizeof(git_binary) - 1 &&
+ !memcmp(git_binary, buffer + hd, llen)) {
+ int used;
+ linenr++;
+ used = parse_binary(buffer + hd + llen,
+ size - hd - llen, patch);
+ if (used)
+ patchsize = used + llen;
+ else
+ patchsize = 0;
+ }
+ else if (!memcmp(" differ\n", buffer + hd + llen - 8, 8)) {
+ static const char *binhdr[] = {
+ "Binary files ",
+ "Files ",
+ NULL,
+ };
+ int i;
+ for (i = 0; binhdr[i]; i++) {
+ int len = strlen(binhdr[i]);
+ if (len < size - hd &&
+ !memcmp(binhdr[i], buffer + hd, len)) {
+ linenr++;
+ patch->is_binary = 1;
+ patchsize = llen;
+ break;
+ }
+ }
+ }
+
+ /* Empty patch cannot be applied if it is a text patch
+ * without metadata change. A binary patch appears
+ * empty to us here.
+ */
+ if ((apply || check) &&
+ (!patch->is_binary && !metadata_changes(patch)))
+ die(_("patch with only garbage at line %d"), linenr);
+ }
+
+ return offset + hdrsize + patchsize;
+}
+
+#define swap(a,b) myswap((a),(b),sizeof(a))
+
+#define myswap(a, b, size) do { \
+ unsigned char mytmp[size]; \
+ memcpy(mytmp, &a, size); \
+ memcpy(&a, &b, size); \
+ memcpy(&b, mytmp, size); \
+} while (0)
+
+static void reverse_patches(struct patch *p)
+{
+ for (; p; p = p->next) {
+ struct fragment *frag = p->fragments;
+
+ swap(p->new_name, p->old_name);
+ swap(p->new_mode, p->old_mode);
+ swap(p->is_new, p->is_delete);
+ swap(p->lines_added, p->lines_deleted);
+ swap(p->old_sha1_prefix, p->new_sha1_prefix);
+
+ for (; frag; frag = frag->next) {
+ swap(frag->newpos, frag->oldpos);
+ swap(frag->newlines, frag->oldlines);
+ }
+ }
+}
+
+static const char pluses[] =
+"++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++";
+static const char minuses[]=
+"----------------------------------------------------------------------";
+
+static void show_stats(struct patch *patch)
+{
+ struct strbuf qname = STRBUF_INIT;
+ char *cp = patch->new_name ? patch->new_name : patch->old_name;
+ int max, add, del;
+
+ quote_c_style(cp, &qname, NULL, 0);
+
+ /*
+ * "scale" the filename
+ */
+ max = max_len;
+ if (max > 50)
+ max = 50;
+
+ if (qname.len > max) {
+ cp = strchr(qname.buf + qname.len + 3 - max, '/');
+ if (!cp)
+ cp = qname.buf + qname.len + 3 - max;
+ strbuf_splice(&qname, 0, cp - qname.buf, "...", 3);
+ }
+
+ if (patch->is_binary) {
+ printf(" %-*s | Bin\n", max, qname.buf);
+ strbuf_release(&qname);
+ return;
+ }
+
+ printf(" %-*s |", max, qname.buf);
+ strbuf_release(&qname);
+
+ /*
+ * scale the add/delete
+ */
+ max = max + max_change > 70 ? 70 - max : max_change;
+ add = patch->lines_added;
+ del = patch->lines_deleted;
+
+ if (max_change > 0) {
+ int total = ((add + del) * max + max_change / 2) / max_change;
+ add = (add * max + max_change / 2) / max_change;
+ del = total - add;
+ }
+ printf("%5d %.*s%.*s\n", patch->lines_added + patch->lines_deleted,
+ add, pluses, del, minuses);
+}
+
+static int read_old_data(struct stat *st, const char *path, struct strbuf *buf)
+{
+ switch (st->st_mode & S_IFMT) {
+ case S_IFLNK:
+ if (strbuf_readlink(buf, path, st->st_size) < 0)
+ return error(_("unable to read symlink %s"), path);
+ return 0;
+ case S_IFREG:
+ if (strbuf_read_file(buf, path, st->st_size) != st->st_size)
+ return error(_("unable to open or read %s"), path);
+ convert_to_git(path, buf->buf, buf->len, buf, 0);
+ return 0;
+ default:
+ return -1;
+ }
+}
+
+/*
+ * Update the preimage, and the common lines in postimage,
+ * from buffer buf of length len. If postlen is 0 the postimage
+ * is updated in place, otherwise it's updated on a new buffer
+ * of length postlen
+ */
+
+static void update_pre_post_images(struct image *preimage,
+ struct image *postimage,
+ char *buf,
+ size_t len, size_t postlen)
+{
+ int i, ctx, reduced;
+ char *new, *old, *fixed;
+ struct image fixed_preimage;
+
+ /*
+ * Update the preimage with whitespace fixes. Note that we
+ * are not losing preimage->buf -- apply_one_fragment() will
+ * free "oldlines".
+ */
+ prepare_image(&fixed_preimage, buf, len, 1);
+ assert(postlen
+ ? fixed_preimage.nr == preimage->nr
+ : fixed_preimage.nr <= preimage->nr);
+ for (i = 0; i < fixed_preimage.nr; i++)
+ fixed_preimage.line[i].flag = preimage->line[i].flag;
+ free(preimage->line_allocated);
+ *preimage = fixed_preimage;
+
+ /*
+ * Adjust the common context lines in postimage. This can be
+ * done in-place when we are shrinking it with whitespace
+ * fixing, but needs a new buffer when ignoring whitespace or
+ * expanding leading tabs to spaces.
+ *
+ * We trust the caller to tell us if the update can be done
+ * in place (postlen==0) or not.
+ */
+ old = postimage->buf;
+ if (postlen)
+ new = postimage->buf = xmalloc(postlen);
+ else
+ new = old;
+ fixed = preimage->buf;
+
+ for (i = reduced = ctx = 0; i < postimage->nr; i++) {
+ size_t len = postimage->line[i].len;
+ if (!(postimage->line[i].flag & LINE_COMMON)) {
+ /* an added line -- no counterparts in preimage */
+ memmove(new, old, len);
+ old += len;
+ new += len;
+ continue;
+ }
+
+ /* a common context -- skip it in the original postimage */
+ old += len;
+
+ /* and find the corresponding one in the fixed preimage */
+ while (ctx < preimage->nr &&
+ !(preimage->line[ctx].flag & LINE_COMMON)) {
+ fixed += preimage->line[ctx].len;
+ ctx++;
+ }
+
+ /*
+ * preimage is expected to run out, if the caller
+ * fixed addition of trailing blank lines.
+ */
+ if (preimage->nr <= ctx) {
+ reduced++;
+ continue;
+ }
+
+ /* and copy it in, while fixing the line length */
+ len = preimage->line[ctx].len;
+ memcpy(new, fixed, len);
+ new += len;
+ fixed += len;
+ postimage->line[i].len = len;
+ ctx++;
+ }
+
+ if (postlen
+ ? postlen < new - postimage->buf
+ : postimage->len < new - postimage->buf)
+ die("BUG: caller miscounted postlen: asked %d, orig = %d, used = %d",
+ (int)postlen, (int) postimage->len, (int)(new - postimage->buf));
+
+ /* Fix the length of the whole thing */
+ postimage->len = new - postimage->buf;
+ postimage->nr -= reduced;
+}
+
+static int match_fragment(struct image *img,
+ struct image *preimage,
+ struct image *postimage,
+ unsigned long try,
+ int try_lno,
+ unsigned ws_rule,
+ int match_beginning, int match_end)
+{
+ int i;
+ char *fixed_buf, *buf, *orig, *target;
+ struct strbuf fixed;
+ size_t fixed_len, postlen;
+ int preimage_limit;
+
+ if (preimage->nr + try_lno <= img->nr) {
+ /*
+ * The hunk falls within the boundaries of img.
+ */
+ preimage_limit = preimage->nr;
+ if (match_end && (preimage->nr + try_lno != img->nr))
+ return 0;
+ } else if (ws_error_action == correct_ws_error &&
+ (ws_rule & WS_BLANK_AT_EOF)) {
+ /*
+ * This hunk extends beyond the end of img, and we are
+ * removing blank lines at the end of the file. This
+ * many lines from the beginning of the preimage must
+ * match with img, and the remainder of the preimage
+ * must be blank.
+ */
+ preimage_limit = img->nr - try_lno;
+ } else {
+ /*
+ * The hunk extends beyond the end of the img and
+ * we are not removing blanks at the end, so we
+ * should reject the hunk at this position.
+ */
+ return 0;
+ }
+
+ if (match_beginning && try_lno)
+ return 0;
+
+ /* Quick hash check */
+ for (i = 0; i < preimage_limit; i++)
+ if ((img->line[try_lno + i].flag & LINE_PATCHED) ||
+ (preimage->line[i].hash != img->line[try_lno + i].hash))
+ return 0;
+
+ if (preimage_limit == preimage->nr) {
+ /*
+ * Do we have an exact match? If we were told to match
+ * at the end, size must be exactly at try+fragsize,
+ * otherwise try+fragsize must be still within the preimage,
+ * and either case, the old piece should match the preimage
+ * exactly.
+ */
+ if ((match_end
+ ? (try + preimage->len == img->len)
+ : (try + preimage->len <= img->len)) &&
+ !memcmp(img->buf + try, preimage->buf, preimage->len))
+ return 1;
+ } else {
+ /*
+ * The preimage extends beyond the end of img, so
+ * there cannot be an exact match.
+ *
+ * There must be one non-blank context line that match
+ * a line before the end of img.
+ */
+ char *buf_end;
+
+ buf = preimage->buf;
+ buf_end = buf;
+ for (i = 0; i < preimage_limit; i++)
+ buf_end += preimage->line[i].len;
+
+ for ( ; buf < buf_end; buf++)
+ if (!isspace(*buf))
+ break;
+ if (buf == buf_end)
+ return 0;
+ }
+
+ /*
+ * No exact match. If we are ignoring whitespace, run a line-by-line
+ * fuzzy matching. We collect all the line length information because
+ * we need it to adjust whitespace if we match.
+ */
+ if (ws_ignore_action == ignore_ws_change) {
+ size_t imgoff = 0;
+ size_t preoff = 0;
+ size_t postlen = postimage->len;
+ size_t extra_chars;
+ char *preimage_eof;
+ char *preimage_end;
+ for (i = 0; i < preimage_limit; i++) {
+ size_t prelen = preimage->line[i].len;
+ size_t imglen = img->line[try_lno+i].len;
+
+ if (!fuzzy_matchlines(img->buf + try + imgoff, imglen,
+ preimage->buf + preoff, prelen))
+ return 0;
+ if (preimage->line[i].flag & LINE_COMMON)
+ postlen += imglen - prelen;
+ imgoff += imglen;
+ preoff += prelen;
+ }
+
+ /*
+ * Ok, the preimage matches with whitespace fuzz.
+ *
+ * imgoff now holds the true length of the target that
+ * matches the preimage before the end of the file.
+ *
+ * Count the number of characters in the preimage that fall
+ * beyond the end of the file and make sure that all of them
+ * are whitespace characters. (This can only happen if
+ * we are removing blank lines at the end of the file.)
+ */
+ buf = preimage_eof = preimage->buf + preoff;
+ for ( ; i < preimage->nr; i++)
+ preoff += preimage->line[i].len;
+ preimage_end = preimage->buf + preoff;
+ for ( ; buf < preimage_end; buf++)
+ if (!isspace(*buf))
+ return 0;
+
+ /*
+ * Update the preimage and the common postimage context
+ * lines to use the same whitespace as the target.
+ * If whitespace is missing in the target (i.e.
+ * if the preimage extends beyond the end of the file),
+ * use the whitespace from the preimage.
+ */
+ extra_chars = preimage_end - preimage_eof;
+ strbuf_init(&fixed, imgoff + extra_chars);
+ strbuf_add(&fixed, img->buf + try, imgoff);
+ strbuf_add(&fixed, preimage_eof, extra_chars);
+ fixed_buf = strbuf_detach(&fixed, &fixed_len);
+ update_pre_post_images(preimage, postimage,
+ fixed_buf, fixed_len, postlen);
+ return 1;
+ }
+
+ if (ws_error_action != correct_ws_error)
+ return 0;
+
+ /*
+ * The hunk does not apply byte-by-byte, but the hash says
+ * it might with whitespace fuzz. We weren't asked to
+ * ignore whitespace, we were asked to correct whitespace
+ * errors, so let's try matching after whitespace correction.
+ *
+ * While checking the preimage against the target, whitespace
+ * errors in both fixed, we count how large the corresponding
+ * postimage needs to be. The postimage prepared by
+ * apply_one_fragment() has whitespace errors fixed on added
+ * lines already, but the common lines were propagated as-is,
+ * which may become longer when their whitespace errors are
+ * fixed.
+ */
+
+ /* First count added lines in postimage */
+ postlen = 0;
+ for (i = 0; i < postimage->nr; i++) {
+ if (!(postimage->line[i].flag & LINE_COMMON))
+ postlen += postimage->line[i].len;
+ }
+
+ /*
+ * The preimage may extend beyond the end of the file,
+ * but in this loop we will only handle the part of the
+ * preimage that falls within the file.
+ */
+ strbuf_init(&fixed, preimage->len + 1);
+ orig = preimage->buf;
+ target = img->buf + try;
+ for (i = 0; i < preimage_limit; i++) {
+ size_t oldlen = preimage->line[i].len;
+ size_t tgtlen = img->line[try_lno + i].len;
+ size_t fixstart = fixed.len;
+ struct strbuf tgtfix;
+ int match;
+
+ /* Try fixing the line in the preimage */
+ ws_fix_copy(&fixed, orig, oldlen, ws_rule, NULL);
+
+ /* Try fixing the line in the target */
+ strbuf_init(&tgtfix, tgtlen);
+ ws_fix_copy(&tgtfix, target, tgtlen, ws_rule, NULL);
+
+ /*
+ * If they match, either the preimage was based on
+ * a version before our tree fixed whitespace breakage,
+ * or we are lacking a whitespace-fix patch the tree
+ * the preimage was based on already had (i.e. target
+ * has whitespace breakage, the preimage doesn't).
+ * In either case, we are fixing the whitespace breakages
+ * so we might as well take the fix together with their
+ * real change.
+ */
+ match = (tgtfix.len == fixed.len - fixstart &&
+ !memcmp(tgtfix.buf, fixed.buf + fixstart,
+ fixed.len - fixstart));
+
+ /* Add the length if this is common with the postimage */
+ if (preimage->line[i].flag & LINE_COMMON)
+ postlen += tgtfix.len;
+
+ strbuf_release(&tgtfix);
+ if (!match)
+ goto unmatch_exit;
+
+ orig += oldlen;
+ target += tgtlen;
+ }
+
+
+ /*
+ * Now handle the lines in the preimage that falls beyond the
+ * end of the file (if any). They will only match if they are
+ * empty or only contain whitespace (if WS_BLANK_AT_EOL is
+ * false).
+ */
+ for ( ; i < preimage->nr; i++) {
+ size_t fixstart = fixed.len; /* start of the fixed preimage */
+ size_t oldlen = preimage->line[i].len;
+ int j;
+
+ /* Try fixing the line in the preimage */
+ ws_fix_copy(&fixed, orig, oldlen, ws_rule, NULL);
+
+ for (j = fixstart; j < fixed.len; j++)
+ if (!isspace(fixed.buf[j]))
+ goto unmatch_exit;
+
+ orig += oldlen;
+ }
+
+ /*
+ * Yes, the preimage is based on an older version that still
+ * has whitespace breakages unfixed, and fixing them makes the
+ * hunk match. Update the context lines in the postimage.
+ */
+ fixed_buf = strbuf_detach(&fixed, &fixed_len);
+ if (postlen < postimage->len)
+ postlen = 0;
+ update_pre_post_images(preimage, postimage,
+ fixed_buf, fixed_len, postlen);
+ return 1;
+
+ unmatch_exit:
+ strbuf_release(&fixed);
+ return 0;
+}
+
+static int find_pos(struct image *img,
+ struct image *preimage,
+ struct image *postimage,
+ int line,
+ unsigned ws_rule,
+ int match_beginning, int match_end)
+{
+ int i;
+ unsigned long backwards, forwards, try;
+ int backwards_lno, forwards_lno, try_lno;
+
+ /*
+ * If match_beginning or match_end is specified, there is no
+ * point starting from a wrong line that will never match and
+ * wander around and wait for a match at the specified end.
+ */
+ if (match_beginning)
+ line = 0;
+ else if (match_end)
+ line = img->nr - preimage->nr;
+
+ /*
+ * Because the comparison is unsigned, the following test
+ * will also take care of a negative line number that can
+ * result when match_end and preimage is larger than the target.
+ */
+ if ((size_t) line > img->nr)
+ line = img->nr;
+
+ try = 0;
+ for (i = 0; i < line; i++)
+ try += img->line[i].len;
+
+ /*
+ * There's probably some smart way to do this, but I'll leave
+ * that to the smart and beautiful people. I'm simple and stupid.
+ */
+ backwards = try;
+ backwards_lno = line;
+ forwards = try;
+ forwards_lno = line;
+ try_lno = line;
+
+ for (i = 0; ; i++) {
+ if (match_fragment(img, preimage, postimage,
+ try, try_lno, ws_rule,
+ match_beginning, match_end))
+ return try_lno;
+
+ again:
+ if (backwards_lno == 0 && forwards_lno == img->nr)
+ break;
+
+ if (i & 1) {
+ if (backwards_lno == 0) {
+ i++;
+ goto again;
+ }
+ backwards_lno--;
+ backwards -= img->line[backwards_lno].len;
+ try = backwards;
+ try_lno = backwards_lno;
+ } else {
+ if (forwards_lno == img->nr) {
+ i++;
+ goto again;
+ }
+ forwards += img->line[forwards_lno].len;
+ forwards_lno++;
+ try = forwards;
+ try_lno = forwards_lno;
+ }
+
+ }
+ return -1;
+}
+
+static void remove_first_line(struct image *img)
+{
+ img->buf += img->line[0].len;
+ img->len -= img->line[0].len;
+ img->line++;
+ img->nr--;
+}
+
+static void remove_last_line(struct image *img)
+{
+ img->len -= img->line[--img->nr].len;
+}
+
+/*
+ * The change from "preimage" and "postimage" has been found to
+ * apply at applied_pos (counts in line numbers) in "img".
+ * Update "img" to remove "preimage" and replace it with "postimage".
+ */
+static void update_image(struct image *img,
+ int applied_pos,
+ struct image *preimage,
+ struct image *postimage)
+{
+ /*
+ * remove the copy of preimage at offset in img
+ * and replace it with postimage
+ */
+ int i, nr;
+ size_t remove_count, insert_count, applied_at = 0;
+ char *result;
+ int preimage_limit;
+
+ /*
+ * If we are removing blank lines at the end of img,
+ * the preimage may extend beyond the end.
+ * If that is the case, we must be careful only to
+ * remove the part of the preimage that falls within
+ * the boundaries of img. Initialize preimage_limit
+ * to the number of lines in the preimage that falls
+ * within the boundaries.
+ */
+ preimage_limit = preimage->nr;
+ if (preimage_limit > img->nr - applied_pos)
+ preimage_limit = img->nr - applied_pos;
+
+ for (i = 0; i < applied_pos; i++)
+ applied_at += img->line[i].len;
+
+ remove_count = 0;
+ for (i = 0; i < preimage_limit; i++)
+ remove_count += img->line[applied_pos + i].len;
+ insert_count = postimage->len;
+
+ /* Adjust the contents */
+ result = xmalloc(img->len + insert_count - remove_count + 1);
+ memcpy(result, img->buf, applied_at);
+ memcpy(result + applied_at, postimage->buf, postimage->len);
+ memcpy(result + applied_at + postimage->len,
+ img->buf + (applied_at + remove_count),
+ img->len - (applied_at + remove_count));
+ free(img->buf);
+ img->buf = result;
+ img->len += insert_count - remove_count;
+ result[img->len] = '\0';
+
+ /* Adjust the line table */
+ nr = img->nr + postimage->nr - preimage_limit;
+ if (preimage_limit < postimage->nr) {
+ /*
+ * NOTE: this knows that we never call remove_first_line()
+ * on anything other than pre/post image.
+ */
+ REALLOC_ARRAY(img->line, nr);
+ img->line_allocated = img->line;
+ }
+ if (preimage_limit != postimage->nr)
+ memmove(img->line + applied_pos + postimage->nr,
+ img->line + applied_pos + preimage_limit,
+ (img->nr - (applied_pos + preimage_limit)) *
+ sizeof(*img->line));
+ memcpy(img->line + applied_pos,
+ postimage->line,
+ postimage->nr * sizeof(*img->line));
+ if (!allow_overlap)
+ for (i = 0; i < postimage->nr; i++)
+ img->line[applied_pos + i].flag |= LINE_PATCHED;
+ img->nr = nr;
+}
+
+/*
+ * Use the patch-hunk text in "frag" to prepare two images (preimage and
+ * postimage) for the hunk. Find lines that match "preimage" in "img" and
+ * replace the part of "img" with "postimage" text.
+ */
+static int apply_one_fragment(struct image *img, struct fragment *frag,
+ int inaccurate_eof, unsigned ws_rule,
+ int nth_fragment)
+{
+ int match_beginning, match_end;
+ const char *patch = frag->patch;
+ int size = frag->size;
+ char *old, *oldlines;
+ struct strbuf newlines;
+ int new_blank_lines_at_end = 0;
+ int found_new_blank_lines_at_end = 0;
+ int hunk_linenr = frag->linenr;
+ unsigned long leading, trailing;
+ int pos, applied_pos;
+ struct image preimage;
+ struct image postimage;
+
+ memset(&preimage, 0, sizeof(preimage));
+ memset(&postimage, 0, sizeof(postimage));
+ oldlines = xmalloc(size);
+ strbuf_init(&newlines, size);
+
+ old = oldlines;
+ while (size > 0) {
+ char first;
+ int len = linelen(patch, size);
+ int plen;
+ int added_blank_line = 0;
+ int is_blank_context = 0;
+ size_t start;
+
+ if (!len)
+ break;
+
+ /*
+ * "plen" is how much of the line we should use for
+ * the actual patch data. Normally we just remove the
+ * first character on the line, but if the line is
+ * followed by "\ No newline", then we also remove the
+ * last one (which is the newline, of course).
+ */
+ plen = len - 1;
+ if (len < size && patch[len] == '\\')
+ plen--;
+ first = *patch;
+ if (apply_in_reverse) {
+ if (first == '-')
+ first = '+';
+ else if (first == '+')
+ first = '-';
+ }
+
+ switch (first) {
+ case '\n':
+ /* Newer GNU diff, empty context line */
+ if (plen < 0)
+ /* ... followed by '\No newline'; nothing */
+ break;
+ *old++ = '\n';
+ strbuf_addch(&newlines, '\n');
+ add_line_info(&preimage, "\n", 1, LINE_COMMON);
+ add_line_info(&postimage, "\n", 1, LINE_COMMON);
+ is_blank_context = 1;
+ break;
+ case ' ':
+ if (plen && (ws_rule & WS_BLANK_AT_EOF) &&
+ ws_blank_line(patch + 1, plen, ws_rule))
+ is_blank_context = 1;
+ case '-':
+ memcpy(old, patch + 1, plen);
+ add_line_info(&preimage, old, plen,
+ (first == ' ' ? LINE_COMMON : 0));
+ old += plen;
+ if (first == '-')
+ break;
+ /* Fall-through for ' ' */
+ case '+':
+ /* --no-add does not add new lines */
+ if (first == '+' && no_add)
+ break;
+
+ start = newlines.len;
+ if (first != '+' ||
+ !whitespace_error ||
+ ws_error_action != correct_ws_error) {
+ strbuf_add(&newlines, patch + 1, plen);
+ }
+ else {
+ ws_fix_copy(&newlines, patch + 1, plen, ws_rule, &applied_after_fixing_ws);
+ }
+ add_line_info(&postimage, newlines.buf + start, newlines.len - start,
+ (first == '+' ? 0 : LINE_COMMON));
+ if (first == '+' &&
+ (ws_rule & WS_BLANK_AT_EOF) &&
+ ws_blank_line(patch + 1, plen, ws_rule))
+ added_blank_line = 1;
+ break;
+ case '@': case '\\':
+ /* Ignore it, we already handled it */
+ break;
+ default:
+ if (apply_verbosely)
+ error(_("invalid start of line: '%c'"), first);
+ applied_pos = -1;
+ goto out;
+ }
+ if (added_blank_line) {
+ if (!new_blank_lines_at_end)
+ found_new_blank_lines_at_end = hunk_linenr;
+ new_blank_lines_at_end++;
+ }
+ else if (is_blank_context)
+ ;
+ else
+ new_blank_lines_at_end = 0;
+ patch += len;
+ size -= len;
+ hunk_linenr++;
+ }
+ if (inaccurate_eof &&
+ old > oldlines && old[-1] == '\n' &&
+ newlines.len > 0 && newlines.buf[newlines.len - 1] == '\n') {
+ old--;
+ strbuf_setlen(&newlines, newlines.len - 1);
+ }
+
+ leading = frag->leading;
+ trailing = frag->trailing;
+
+ /*
+ * A hunk to change lines at the beginning would begin with
+ * @@ -1,L +N,M @@
+ * but we need to be careful. -U0 that inserts before the second
+ * line also has this pattern.
+ *
+ * And a hunk to add to an empty file would begin with
+ * @@ -0,0 +N,M @@
+ *
+ * In other words, a hunk that is (frag->oldpos <= 1) with or
+ * without leading context must match at the beginning.
+ */
+ match_beginning = (!frag->oldpos ||
+ (frag->oldpos == 1 && !unidiff_zero));
+
+ /*
+ * A hunk without trailing lines must match at the end.
+ * However, we simply cannot tell if a hunk must match end
+ * from the lack of trailing lines if the patch was generated
+ * with unidiff without any context.
+ */
+ match_end = !unidiff_zero && !trailing;
+
+ pos = frag->newpos ? (frag->newpos - 1) : 0;
+ preimage.buf = oldlines;
+ preimage.len = old - oldlines;
+ postimage.buf = newlines.buf;
+ postimage.len = newlines.len;
+ preimage.line = preimage.line_allocated;
+ postimage.line = postimage.line_allocated;
+
+ for (;;) {
+
+ applied_pos = find_pos(img, &preimage, &postimage, pos,
+ ws_rule, match_beginning, match_end);
+
+ if (applied_pos >= 0)
+ break;
+
+ /* Am I at my context limits? */
+ if ((leading <= p_context) && (trailing <= p_context))
+ break;
+ if (match_beginning || match_end) {
+ match_beginning = match_end = 0;
+ continue;
+ }
+
+ /*
+ * Reduce the number of context lines; reduce both
+ * leading and trailing if they are equal otherwise
+ * just reduce the larger context.
+ */
+ if (leading >= trailing) {
+ remove_first_line(&preimage);
+ remove_first_line(&postimage);
+ pos--;
+ leading--;
+ }
+ if (trailing > leading) {
+ remove_last_line(&preimage);
+ remove_last_line(&postimage);
+ trailing--;
+ }
+ }
+
+ if (applied_pos >= 0) {
+ if (new_blank_lines_at_end &&
+ preimage.nr + applied_pos >= img->nr &&
+ (ws_rule & WS_BLANK_AT_EOF) &&
+ ws_error_action != nowarn_ws_error) {
+ record_ws_error(WS_BLANK_AT_EOF, "+", 1,
+ found_new_blank_lines_at_end);
+ if (ws_error_action == correct_ws_error) {
+ while (new_blank_lines_at_end--)
+ remove_last_line(&postimage);
+ }
+ /*
+ * We would want to prevent write_out_results()
+ * from taking place in apply_patch() that follows
+ * the callchain led us here, which is:
+ * apply_patch->check_patch_list->check_patch->
+ * apply_data->apply_fragments->apply_one_fragment
+ */
+ if (ws_error_action == die_on_ws_error)
+ apply = 0;
+ }
+
+ if (apply_verbosely && applied_pos != pos) {
+ int offset = applied_pos - pos;
+ if (apply_in_reverse)
+ offset = 0 - offset;
+ fprintf_ln(stderr,
+ Q_("Hunk #%d succeeded at %d (offset %d line).",
+ "Hunk #%d succeeded at %d (offset %d lines).",
+ offset),
+ nth_fragment, applied_pos + 1, offset);
+ }
+
+ /*
+ * Warn if it was necessary to reduce the number
+ * of context lines.
+ */
+ if ((leading != frag->leading) ||
+ (trailing != frag->trailing))
+ fprintf_ln(stderr, _("Context reduced to (%ld/%ld)"
+ " to apply fragment at %d"),
+ leading, trailing, applied_pos+1);
+ update_image(img, applied_pos, &preimage, &postimage);
+ } else {
+ if (apply_verbosely)
+ error(_("while searching for:\n%.*s"),
+ (int)(old - oldlines), oldlines);
+ }
+
+out:
+ free(oldlines);
+ strbuf_release(&newlines);
+ free(preimage.line_allocated);
+ free(postimage.line_allocated);
+
+ return (applied_pos < 0);
+}
+
+static int apply_binary_fragment(struct image *img, struct patch *patch)
+{
+ struct fragment *fragment = patch->fragments;
+ unsigned long len;
+ void *dst;
+
+ if (!fragment)
+ return error(_("missing binary patch data for '%s'"),
+ patch->new_name ?
+ patch->new_name :
+ patch->old_name);
+
+ /* Binary patch is irreversible without the optional second hunk */
+ if (apply_in_reverse) {
+ if (!fragment->next)
+ return error("cannot reverse-apply a binary patch "
+ "without the reverse hunk to '%s'",
+ patch->new_name
+ ? patch->new_name : patch->old_name);
+ fragment = fragment->next;
+ }
+ switch (fragment->binary_patch_method) {
+ case BINARY_DELTA_DEFLATED:
+ dst = patch_delta(img->buf, img->len, fragment->patch,
+ fragment->size, &len);
+ if (!dst)
+ return -1;
+ clear_image(img);
+ img->buf = dst;
+ img->len = len;
+ return 0;
+ case BINARY_LITERAL_DEFLATED:
+ clear_image(img);
+ img->len = fragment->size;
+ img->buf = xmemdupz(fragment->patch, img->len);
+ return 0;
+ }
+ return -1;
+}
+
+/*
+ * Replace "img" with the result of applying the binary patch.
+ * The binary patch data itself in patch->fragment is still kept
+ * but the preimage prepared by the caller in "img" is freed here
+ * or in the helper function apply_binary_fragment() this calls.
+ */
+static int apply_binary(struct image *img, struct patch *patch)
+{
+ const char *name = patch->old_name ? patch->old_name : patch->new_name;
+ unsigned char sha1[20];
+
+ /*
+ * For safety, we require patch index line to contain
+ * full 40-byte textual SHA1 for old and new, at least for now.
+ */
+ if (strlen(patch->old_sha1_prefix) != 40 ||
+ strlen(patch->new_sha1_prefix) != 40 ||
+ get_sha1_hex(patch->old_sha1_prefix, sha1) ||
+ get_sha1_hex(patch->new_sha1_prefix, sha1))
+ return error("cannot apply binary patch to '%s' "
+ "without full index line", name);
+
+ if (patch->old_name) {
+ /*
+ * See if the old one matches what the patch
+ * applies to.
+ */
+ hash_sha1_file(img->buf, img->len, blob_type, sha1);
+ if (strcmp(sha1_to_hex(sha1), patch->old_sha1_prefix))
+ return error("the patch applies to '%s' (%s), "
+ "which does not match the "
+ "current contents.",
+ name, sha1_to_hex(sha1));
+ }
+ else {
+ /* Otherwise, the old one must be empty. */
+ if (img->len)
+ return error("the patch applies to an empty "
+ "'%s' but it is not empty", name);
+ }
+
+ get_sha1_hex(patch->new_sha1_prefix, sha1);
+ if (is_null_sha1(sha1)) {
+ clear_image(img);
+ return 0; /* deletion patch */
+ }
+
+ if (has_sha1_file(sha1)) {
+ /* We already have the postimage */
+ enum object_type type;
+ unsigned long size;
+ char *result;
+
+ result = read_sha1_file(sha1, &type, &size);
+ if (!result)
+ return error("the necessary postimage %s for "
+ "'%s' cannot be read",
+ patch->new_sha1_prefix, name);
+ clear_image(img);
+ img->buf = result;
+ img->len = size;
+ } else {
+ /*
+ * We have verified buf matches the preimage;
+ * apply the patch data to it, which is stored
+ * in the patch->fragments->{patch,size}.
+ */
+ if (apply_binary_fragment(img, patch))
+ return error(_("binary patch does not apply to '%s'"),
+ name);
+
+ /* verify that the result matches */
+ hash_sha1_file(img->buf, img->len, blob_type, sha1);
+ if (strcmp(sha1_to_hex(sha1), patch->new_sha1_prefix))
+ return error(_("binary patch to '%s' creates incorrect result (expecting %s, got %s)"),
+ name, patch->new_sha1_prefix, sha1_to_hex(sha1));
+ }
+
+ return 0;
+}
+
+static int apply_fragments(struct image *img, struct patch *patch)
+{
+ struct fragment *frag = patch->fragments;
+ const char *name = patch->old_name ? patch->old_name : patch->new_name;
+ unsigned ws_rule = patch->ws_rule;
+ unsigned inaccurate_eof = patch->inaccurate_eof;
+ int nth = 0;
+
+ if (patch->is_binary)
+ return apply_binary(img, patch);
+
+ while (frag) {
+ nth++;
+ if (apply_one_fragment(img, frag, inaccurate_eof, ws_rule, nth)) {
+ error(_("patch failed: %s:%ld"), name, frag->oldpos);
+ if (!apply_with_reject)
+ return -1;
+ frag->rejected = 1;
+ }
+ frag = frag->next;
+ }
+ return 0;
+}
+
+static int read_blob_object(struct strbuf *buf, const unsigned char *sha1, unsigned mode)
+{
+ if (S_ISGITLINK(mode)) {
+ strbuf_grow(buf, 100);
+ strbuf_addf(buf, "Subproject commit %s\n", sha1_to_hex(sha1));
+ } else {
+ enum object_type type;
+ unsigned long sz;
+ char *result;
+
+ result = read_sha1_file(sha1, &type, &sz);
+ if (!result)
+ return -1;
+ /* XXX read_sha1_file NUL-terminates */
+ strbuf_attach(buf, result, sz, sz + 1);
+ }
+ return 0;
+}
+
+static int read_file_or_gitlink(const struct cache_entry *ce, struct strbuf *buf)
+{
+ if (!ce)
+ return 0;
+ return read_blob_object(buf, ce->sha1, ce->ce_mode);
+}
+
+static struct patch *in_fn_table(const char *name)
+{
+ struct string_list_item *item;
+
+ if (name == NULL)
+ return NULL;
+
+ item = string_list_lookup(&fn_table, name);
+ if (item != NULL)
+ return (struct patch *)item->util;
+
+ return NULL;
+}
+
+/*
+ * item->util in the filename table records the status of the path.
+ * Usually it points at a patch (whose result records the contents
+ * of it after applying it), but it could be PATH_WAS_DELETED for a
+ * path that a previously applied patch has already removed, or
+ * PATH_TO_BE_DELETED for a path that a later patch would remove.
+ *
+ * The latter is needed to deal with a case where two paths A and B
+ * are swapped by first renaming A to B and then renaming B to A;
+ * moving A to B should not be prevented due to presence of B as we
+ * will remove it in a later patch.
+ */
+#define PATH_TO_BE_DELETED ((struct patch *) -2)
+#define PATH_WAS_DELETED ((struct patch *) -1)
+
+static int to_be_deleted(struct patch *patch)
+{
+ return patch == PATH_TO_BE_DELETED;
+}
+
+static int was_deleted(struct patch *patch)
+{
+ return patch == PATH_WAS_DELETED;
+}
+
+static void add_to_fn_table(struct patch *patch)
+{
+ struct string_list_item *item;
+
+ /*
+ * Always add new_name unless patch is a deletion
+ * This should cover the cases for normal diffs,
+ * file creations and copies
+ */
+ if (patch->new_name != NULL) {
+ item = string_list_insert(&fn_table, patch->new_name);
+ item->util = patch;
+ }
+
+ /*
+ * store a failure on rename/deletion cases because
+ * later chunks shouldn't patch old names
+ */
+ if ((patch->new_name == NULL) || (patch->is_rename)) {
+ item = string_list_insert(&fn_table, patch->old_name);
+ item->util = PATH_WAS_DELETED;
+ }
+}
+
+static void prepare_fn_table(struct patch *patch)
+{
+ /*
+ * store information about incoming file deletion
+ */
+ while (patch) {
+ if ((patch->new_name == NULL) || (patch->is_rename)) {
+ struct string_list_item *item;
+ item = string_list_insert(&fn_table, patch->old_name);
+ item->util = PATH_TO_BE_DELETED;
+ }
+ patch = patch->next;
+ }
+}
+
+static int checkout_target(struct index_state *istate,
+ struct cache_entry *ce, struct stat *st)
+{
+ struct checkout costate;
+
+ memset(&costate, 0, sizeof(costate));
+ costate.base_dir = "";
+ costate.refresh_cache = 1;
+ costate.istate = istate;
+ if (checkout_entry(ce, &costate, NULL) || lstat(ce->name, st))
+ return error(_("cannot checkout %s"), ce->name);
+ return 0;
+}
+
+static struct patch *previous_patch(struct patch *patch, int *gone)
+{
+ struct patch *previous;
+
+ *gone = 0;
+ if (patch->is_copy || patch->is_rename)
+ return NULL; /* "git" patches do not depend on the order */
+
+ previous = in_fn_table(patch->old_name);
+ if (!previous)
+ return NULL;
+
+ if (to_be_deleted(previous))
+ return NULL; /* the deletion hasn't happened yet */
+
+ if (was_deleted(previous))
+ *gone = 1;
+
+ return previous;
+}
+
+static int verify_index_match(const struct cache_entry *ce, struct stat *st)
+{
+ if (S_ISGITLINK(ce->ce_mode)) {
+ if (!S_ISDIR(st->st_mode))
+ return -1;
+ return 0;
+ }
+ return ce_match_stat(ce, st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);
+}
+
+#define SUBMODULE_PATCH_WITHOUT_INDEX 1
+
+static int load_patch_target(struct strbuf *buf,
+ const struct cache_entry *ce,
+ struct stat *st,
+ const char *name,
+ unsigned expected_mode)
+{
+ if (cached || check_index) {
+ if (read_file_or_gitlink(ce, buf))
+ return error(_("read of %s failed"), name);
+ } else if (name) {
+ if (S_ISGITLINK(expected_mode)) {
+ if (ce)
+ return read_file_or_gitlink(ce, buf);
+ else
+ return SUBMODULE_PATCH_WITHOUT_INDEX;
+ } else if (has_symlink_leading_path(name, strlen(name))) {
+ return error(_("reading from '%s' beyond a symbolic link"), name);
+ } else {
+ if (read_old_data(st, name, buf))
+ return error(_("read of %s failed"), name);
+ }
+ }
+ return 0;
+}
+
+/*
+ * We are about to apply "patch"; populate the "image" with the
+ * current version we have, from the working tree or from the index,
+ * depending on the situation e.g. --cached/--index. If we are
+ * applying a non-git patch that incrementally updates the tree,
+ * we read from the result of a previous diff.
+ */
+static int load_preimage(struct image *image,
+ struct patch *patch, struct stat *st,
+ const struct cache_entry *ce)
+{
+ struct strbuf buf = STRBUF_INIT;
+ size_t len;
+ char *img;
+ struct patch *previous;
+ int status;
+
+ previous = previous_patch(patch, &status);
+ if (status)
+ return error(_("path %s has been renamed/deleted"),
+ patch->old_name);
+ if (previous) {
+ /* We have a patched copy in memory; use that. */
+ strbuf_add(&buf, previous->result, previous->resultsize);
+ } else {
+ status = load_patch_target(&buf, ce, st,
+ patch->old_name, patch->old_mode);
+ if (status < 0)
+ return status;
+ else if (status == SUBMODULE_PATCH_WITHOUT_INDEX) {
+ /*
+ * There is no way to apply subproject
+ * patch without looking at the index.
+ * NEEDSWORK: shouldn't this be flagged
+ * as an error???
+ */
+ free_fragment_list(patch->fragments);
+ patch->fragments = NULL;
+ } else if (status) {
+ return error(_("read of %s failed"), patch->old_name);
+ }
+ }
+
+ img = strbuf_detach(&buf, &len);
+ prepare_image(image, img, len, !patch->is_binary);
+ return 0;
+}
+
+static int three_way_merge(struct image *image,
+ char *path,
+ const unsigned char *base,
+ const unsigned char *ours,
+ const unsigned char *theirs)
+{
+ mmfile_t base_file, our_file, their_file;
+ mmbuffer_t result = { NULL };
+ int status;
+
+ read_mmblob(&base_file, base);
+ read_mmblob(&our_file, ours);
+ read_mmblob(&their_file, theirs);
+ status = ll_merge(&result, path,
+ &base_file, "base",
+ &our_file, "ours",
+ &their_file, "theirs", NULL);
+ free(base_file.ptr);
+ free(our_file.ptr);
+ free(their_file.ptr);
+ if (status < 0 || !result.ptr) {
+ free(result.ptr);
+ return -1;
+ }
+ clear_image(image);
+ image->buf = result.ptr;
+ image->len = result.size;
+
+ return status;
+}
+
+/*
+ * When directly falling back to add/add three-way merge, we read from
+ * the current contents of the new_name. In no cases other than that
+ * this function will be called.
+ */
+static int load_current(struct image *image, struct patch *patch)
+{
+ struct strbuf buf = STRBUF_INIT;
+ int status, pos;
+ size_t len;
+ char *img;
+ struct stat st;
+ struct cache_entry *ce;
+ char *name = patch->new_name;
+ unsigned mode = patch->new_mode;
+
+ if (!patch->is_new)
+ die("BUG: patch to %s is not a creation", patch->old_name);
+
+ pos = cache_name_pos(name, strlen(name));
+ if (pos < 0)
+ return error(_("%s: does not exist in index"), name);
+ ce = active_cache[pos];
+ if (lstat(name, &st)) {
+ if (errno != ENOENT)
+ return error(_("%s: %s"), name, strerror(errno));
+ if (checkout_target(&the_index, ce, &st))
+ return -1;
+ }
+ if (verify_index_match(ce, &st))
+ return error(_("%s: does not match index"), name);
+
+ status = load_patch_target(&buf, ce, &st, name, mode);
+ if (status < 0)
+ return status;
+ else if (status)
+ return -1;
+ img = strbuf_detach(&buf, &len);
+ prepare_image(image, img, len, !patch->is_binary);
+ return 0;
+}
+
+static int try_threeway(struct image *image, struct patch *patch,
+ struct stat *st, const struct cache_entry *ce)
+{
+ unsigned char pre_sha1[20], post_sha1[20], our_sha1[20];
+ struct strbuf buf = STRBUF_INIT;
+ size_t len;
+ int status;
+ char *img;
+ struct image tmp_image;
+
+ /* No point falling back to 3-way merge in these cases */
+ if (patch->is_delete ||
+ S_ISGITLINK(patch->old_mode) || S_ISGITLINK(patch->new_mode))
+ return -1;
+
+ /* Preimage the patch was prepared for */
+ if (patch->is_new)
+ write_sha1_file("", 0, blob_type, pre_sha1);
+ else if (get_sha1(patch->old_sha1_prefix, pre_sha1) ||
+ read_blob_object(&buf, pre_sha1, patch->old_mode))
+ return error("repository lacks the necessary blob to fall back on 3-way merge.");
+
+ fprintf(stderr, "Falling back to three-way merge...\n");
+
+ img = strbuf_detach(&buf, &len);
+ prepare_image(&tmp_image, img, len, 1);
+ /* Apply the patch to get the post image */
+ if (apply_fragments(&tmp_image, patch) < 0) {
+ clear_image(&tmp_image);
+ return -1;
+ }
+ /* post_sha1[] is theirs */
+ write_sha1_file(tmp_image.buf, tmp_image.len, blob_type, post_sha1);
+ clear_image(&tmp_image);
+
+ /* our_sha1[] is ours */
+ if (patch->is_new) {
+ if (load_current(&tmp_image, patch))
+ return error("cannot read the current contents of '%s'",
+ patch->new_name);
+ } else {
+ if (load_preimage(&tmp_image, patch, st, ce))
+ return error("cannot read the current contents of '%s'",
+ patch->old_name);
+ }
+ write_sha1_file(tmp_image.buf, tmp_image.len, blob_type, our_sha1);
+ clear_image(&tmp_image);
+
+ /* in-core three-way merge between post and our using pre as base */
+ status = three_way_merge(image, patch->new_name,
+ pre_sha1, our_sha1, post_sha1);
+ if (status < 0) {
+ fprintf(stderr, "Failed to fall back on three-way merge...\n");
+ return status;
+ }
+
+ if (status) {
+ patch->conflicted_threeway = 1;
+ if (patch->is_new)
+ hashclr(patch->threeway_stage[0]);
+ else
+ hashcpy(patch->threeway_stage[0], pre_sha1);
+ hashcpy(patch->threeway_stage[1], our_sha1);
+ hashcpy(patch->threeway_stage[2], post_sha1);
+ fprintf(stderr, "Applied patch to '%s' with conflicts.\n", patch->new_name);
+ } else {
+ fprintf(stderr, "Applied patch to '%s' cleanly.\n", patch->new_name);
+ }
+ return 0;
+}
+
+static int apply_data(struct patch *patch, struct stat *st, const struct cache_entry *ce)
+{
+ struct image image;
+
+ if (load_preimage(&image, patch, st, ce) < 0)
+ return -1;
+
+ if (patch->direct_to_threeway ||
+ apply_fragments(&image, patch) < 0) {
+ /* Note: with --reject, apply_fragments() returns 0 */
+ if (!threeway || try_threeway(&image, patch, st, ce) < 0)
+ return -1;
+ }
+ patch->result = image.buf;
+ patch->resultsize = image.len;
+ add_to_fn_table(patch);
+ free(image.line_allocated);
+
+ if (0 < patch->is_delete && patch->resultsize)
+ return error(_("removal patch leaves file contents"));
+
+ return 0;
+}
+
+/*
+ * If "patch" that we are looking at modifies or deletes what we have,
+ * we would want it not to lose any local modification we have, either
+ * in the working tree or in the index.
+ *
+ * This also decides if a non-git patch is a creation patch or a
+ * modification to an existing empty file. We do not check the state
+ * of the current tree for a creation patch in this function; the caller
+ * check_patch() separately makes sure (and errors out otherwise) that
+ * the path the patch creates does not exist in the current tree.
+ */
+static int check_preimage(struct patch *patch, struct cache_entry **ce, struct stat *st)
+{
+ const char *old_name = patch->old_name;
+ struct patch *previous = NULL;
+ int stat_ret = 0, status;
+ unsigned st_mode = 0;
+
+ if (!old_name)
+ return 0;
+
+ assert(patch->is_new <= 0);
+ previous = previous_patch(patch, &status);
+
+ if (status)
+ return error(_("path %s has been renamed/deleted"), old_name);
+ if (previous) {
+ st_mode = previous->new_mode;
+ } else if (!cached) {
+ stat_ret = lstat(old_name, st);
+ if (stat_ret && errno != ENOENT)
+ return error(_("%s: %s"), old_name, strerror(errno));
+ }
+
+ if (check_index && !previous) {
+ int pos = cache_name_pos(old_name, strlen(old_name));
+ if (pos < 0) {
+ if (patch->is_new < 0)
+ goto is_new;
+ return error(_("%s: does not exist in index"), old_name);
+ }
+ *ce = active_cache[pos];
+ if (stat_ret < 0) {
+ if (checkout_target(&the_index, *ce, st))
+ return -1;
+ }
+ if (!cached && verify_index_match(*ce, st))
+ return error(_("%s: does not match index"), old_name);
+ if (cached)
+ st_mode = (*ce)->ce_mode;
+ } else if (stat_ret < 0) {
+ if (patch->is_new < 0)
+ goto is_new;
+ return error(_("%s: %s"), old_name, strerror(errno));
+ }
+
+ if (!cached && !previous)
+ st_mode = ce_mode_from_stat(*ce, st->st_mode);
+
+ if (patch->is_new < 0)
+ patch->is_new = 0;
+ if (!patch->old_mode)
+ patch->old_mode = st_mode;
+ if ((st_mode ^ patch->old_mode) & S_IFMT)
+ return error(_("%s: wrong type"), old_name);
+ if (st_mode != patch->old_mode)
+ warning(_("%s has type %o, expected %o"),
+ old_name, st_mode, patch->old_mode);
+ if (!patch->new_mode && !patch->is_delete)
+ patch->new_mode = st_mode;
+ return 0;
+
+ is_new:
+ patch->is_new = 1;
+ patch->is_delete = 0;
+ free(patch->old_name);
+ patch->old_name = NULL;
+ return 0;
+}
+
+
+#define EXISTS_IN_INDEX 1
+#define EXISTS_IN_WORKTREE 2
+
+static int check_to_create(const char *new_name, int ok_if_exists)
+{
+ struct stat nst;
+
+ if (check_index &&
+ cache_name_pos(new_name, strlen(new_name)) >= 0 &&
+ !ok_if_exists)
+ return EXISTS_IN_INDEX;
+ if (cached)
+ return 0;
+
+ if (!lstat(new_name, &nst)) {
+ if (S_ISDIR(nst.st_mode) || ok_if_exists)
+ return 0;
+ /*
+ * A leading component of new_name might be a symlink
+ * that is going to be removed with this patch, but
+ * still pointing at somewhere that has the path.
+ * In such a case, path "new_name" does not exist as
+ * far as git is concerned.
+ */
+ if (has_symlink_leading_path(new_name, strlen(new_name)))
+ return 0;
+
+ return EXISTS_IN_WORKTREE;
+ } else if ((errno != ENOENT) && (errno != ENOTDIR)) {
+ return error("%s: %s", new_name, strerror(errno));
+ }
+ return 0;
+}
+
+/*
+ * We need to keep track of how symlinks in the preimage are
+ * manipulated by the patches. A patch to add a/b/c where a/b
+ * is a symlink should not be allowed to affect the directory
+ * the symlink points at, but if the same patch removes a/b,
+ * it is perfectly fine, as the patch removes a/b to make room
+ * to create a directory a/b so that a/b/c can be created.
+ */
+static struct string_list symlink_changes;
+#define SYMLINK_GOES_AWAY 01
+#define SYMLINK_IN_RESULT 02
+
+static uintptr_t register_symlink_changes(const char *path, uintptr_t what)
+{
+ struct string_list_item *ent;
+
+ ent = string_list_lookup(&symlink_changes, path);
+ if (!ent) {
+ ent = string_list_insert(&symlink_changes, path);
+ ent->util = (void *)0;
+ }
+ ent->util = (void *)(what | ((uintptr_t)ent->util));
+ return (uintptr_t)ent->util;
+}
+
+static uintptr_t check_symlink_changes(const char *path)
+{
+ struct string_list_item *ent;
+
+ ent = string_list_lookup(&symlink_changes, path);
+ if (!ent)
+ return 0;
+ return (uintptr_t)ent->util;
+}
+
+static void prepare_symlink_changes(struct patch *patch)
+{
+ for ( ; patch; patch = patch->next) {
+ if ((patch->old_name && S_ISLNK(patch->old_mode)) &&
+ (patch->is_rename || patch->is_delete))
+ /* the symlink at patch->old_name is removed */
+ register_symlink_changes(patch->old_name, SYMLINK_GOES_AWAY);
+
+ if (patch->new_name && S_ISLNK(patch->new_mode))
+ /* the symlink at patch->new_name is created or remains */
+ register_symlink_changes(patch->new_name, SYMLINK_IN_RESULT);
+ }
+}
+
+static int path_is_beyond_symlink_1(struct strbuf *name)
+{
+ do {
+ unsigned int change;
+
+ while (--name->len && name->buf[name->len] != '/')
+ ; /* scan backwards */
+ if (!name->len)
+ break;
+ name->buf[name->len] = '\0';
+ change = check_symlink_changes(name->buf);
+ if (change & SYMLINK_IN_RESULT)
+ return 1;
+ if (change & SYMLINK_GOES_AWAY)
+ /*
+ * This cannot be "return 0", because we may
+ * see a new one created at a higher level.
+ */
+ continue;
+
+ /* otherwise, check the preimage */
+ if (check_index) {
+ struct cache_entry *ce;
+
+ ce = cache_file_exists(name->buf, name->len, ignore_case);
+ if (ce && S_ISLNK(ce->ce_mode))
+ return 1;
+ } else {
+ struct stat st;
+ if (!lstat(name->buf, &st) && S_ISLNK(st.st_mode))
+ return 1;
+ }
+ } while (1);
+ return 0;
+}
+
+static int path_is_beyond_symlink(const char *name_)
+{
+ int ret;
+ struct strbuf name = STRBUF_INIT;
+
+ assert(*name_ != '\0');
+ strbuf_addstr(&name, name_);
+ ret = path_is_beyond_symlink_1(&name);
+ strbuf_release(&name);
+
+ return ret;
+}
+
+static void die_on_unsafe_path(struct patch *patch)
+{
+ const char *old_name = NULL;
+ const char *new_name = NULL;
+ if (patch->is_delete)
+ old_name = patch->old_name;
+ else if (!patch->is_new && !patch->is_copy)
+ old_name = patch->old_name;
+ if (!patch->is_delete)
+ new_name = patch->new_name;
+
+ if (old_name && !verify_path(old_name))
+ die(_("invalid path '%s'"), old_name);
+ if (new_name && !verify_path(new_name))
+ die(_("invalid path '%s'"), new_name);
+}
+
+/*
+ * Check and apply the patch in-core; leave the result in patch->result
+ * for the caller to write it out to the final destination.
+ */
+static int check_patch(struct patch *patch)
+{
+ struct stat st;
+ const char *old_name = patch->old_name;
+ const char *new_name = patch->new_name;
+ const char *name = old_name ? old_name : new_name;
+ struct cache_entry *ce = NULL;
+ struct patch *tpatch;
+ int ok_if_exists;
+ int status;
+
+ patch->rejected = 1; /* we will drop this after we succeed */
+
+ status = check_preimage(patch, &ce, &st);
+ if (status)
+ return status;
+ old_name = patch->old_name;
+
+ /*
+ * A type-change diff is always split into a patch to delete
+ * old, immediately followed by a patch to create new (see
+ * diff.c::run_diff()); in such a case it is Ok that the entry
+ * to be deleted by the previous patch is still in the working
+ * tree and in the index.
+ *
+ * A patch to swap-rename between A and B would first rename A
+ * to B and then rename B to A. While applying the first one,
+ * the presence of B should not stop A from getting renamed to
+ * B; ask to_be_deleted() about the later rename. Removal of
+ * B and rename from A to B is handled the same way by asking
+ * was_deleted().
+ */
+ if ((tpatch = in_fn_table(new_name)) &&
+ (was_deleted(tpatch) || to_be_deleted(tpatch)))
+ ok_if_exists = 1;
+ else
+ ok_if_exists = 0;
+
+ if (new_name &&
+ ((0 < patch->is_new) || patch->is_rename || patch->is_copy)) {
+ int err = check_to_create(new_name, ok_if_exists);
+
+ if (err && threeway) {
+ patch->direct_to_threeway = 1;
+ } else switch (err) {
+ case 0:
+ break; /* happy */
+ case EXISTS_IN_INDEX:
+ return error(_("%s: already exists in index"), new_name);
+ break;
+ case EXISTS_IN_WORKTREE:
+ return error(_("%s: already exists in working directory"),
+ new_name);
+ default:
+ return err;
+ }
+
+ if (!patch->new_mode) {
+ if (0 < patch->is_new)
+ patch->new_mode = S_IFREG | 0644;
+ else
+ patch->new_mode = patch->old_mode;
+ }
+ }
+
+ if (new_name && old_name) {
+ int same = !strcmp(old_name, new_name);
+ if (!patch->new_mode)
+ patch->new_mode = patch->old_mode;
+ if ((patch->old_mode ^ patch->new_mode) & S_IFMT) {
+ if (same)
+ return error(_("new mode (%o) of %s does not "
+ "match old mode (%o)"),
+ patch->new_mode, new_name,
+ patch->old_mode);
+ else
+ return error(_("new mode (%o) of %s does not "
+ "match old mode (%o) of %s"),
+ patch->new_mode, new_name,
+ patch->old_mode, old_name);
+ }
+ }
+
+ if (!unsafe_paths)
+ die_on_unsafe_path(patch);
+
+ /*
+ * An attempt to read from or delete a path that is beyond a
+ * symbolic link will be prevented by load_patch_target() that
+ * is called at the beginning of apply_data() so we do not
+ * have to worry about a patch marked with "is_delete" bit
+ * here. We however need to make sure that the patch result
+ * is not deposited to a path that is beyond a symbolic link
+ * here.
+ */
+ if (!patch->is_delete && path_is_beyond_symlink(patch->new_name))
+ return error(_("affected file '%s' is beyond a symbolic link"),
+ patch->new_name);
+
+ if (apply_data(patch, &st, ce) < 0)
+ return error(_("%s: patch does not apply"), name);
+ patch->rejected = 0;
+ return 0;
+}
+
+static int check_patch_list(struct patch *patch)
+{
+ int err = 0;
+
+ prepare_symlink_changes(patch);
+ prepare_fn_table(patch);
+ while (patch) {
+ if (apply_verbosely)
+ say_patch_name(stderr,
+ _("Checking patch %s..."), patch);
+ err |= check_patch(patch);
+ patch = patch->next;
+ }
+ return err;
+}
+
+/* This function tries to read the sha1 from the current index */
+static int get_current_sha1(const char *path, unsigned char *sha1)
+{
+ int pos;
+
+ if (read_cache() < 0)
+ return -1;
+ pos = cache_name_pos(path, strlen(path));
+ if (pos < 0)
+ return -1;
+ hashcpy(sha1, active_cache[pos]->sha1);
+ return 0;
+}
+
+static int preimage_sha1_in_gitlink_patch(struct patch *p, unsigned char sha1[20])
+{
+ /*
+ * A usable gitlink patch has only one fragment (hunk) that looks like:
+ * @@ -1 +1 @@
+ * -Subproject commit <old sha1>
+ * +Subproject commit <new sha1>
+ * or
+ * @@ -1 +0,0 @@
+ * -Subproject commit <old sha1>
+ * for a removal patch.
+ */
+ struct fragment *hunk = p->fragments;
+ static const char heading[] = "-Subproject commit ";
+ char *preimage;
+
+ if (/* does the patch have only one hunk? */
+ hunk && !hunk->next &&
+ /* is its preimage one line? */
+ hunk->oldpos == 1 && hunk->oldlines == 1 &&
+ /* does preimage begin with the heading? */
+ (preimage = memchr(hunk->patch, '\n', hunk->size)) != NULL &&
+ starts_with(++preimage, heading) &&
+ /* does it record full SHA-1? */
+ !get_sha1_hex(preimage + sizeof(heading) - 1, sha1) &&
+ preimage[sizeof(heading) + 40 - 1] == '\n' &&
+ /* does the abbreviated name on the index line agree with it? */
+ starts_with(preimage + sizeof(heading) - 1, p->old_sha1_prefix))
+ return 0; /* it all looks fine */
+
+ /* we may have full object name on the index line */
+ return get_sha1_hex(p->old_sha1_prefix, sha1);
+}
+
+/* Build an index that contains the just the files needed for a 3way merge */
+static void build_fake_ancestor(struct patch *list, const char *filename)
+{
+ struct patch *patch;
+ struct index_state result = { NULL };
+ static struct lock_file lock;
+
+ /* Once we start supporting the reverse patch, it may be
+ * worth showing the new sha1 prefix, but until then...
+ */
+ for (patch = list; patch; patch = patch->next) {
+ unsigned char sha1[20];
+ struct cache_entry *ce;
+ const char *name;
+
+ name = patch->old_name ? patch->old_name : patch->new_name;
+ if (0 < patch->is_new)
+ continue;
+
+ if (S_ISGITLINK(patch->old_mode)) {
+ if (!preimage_sha1_in_gitlink_patch(patch, sha1))
+ ; /* ok, the textual part looks sane */
+ else
+ die("sha1 information is lacking or useless for submodule %s",
+ name);
+ } else if (!get_sha1_blob(patch->old_sha1_prefix, sha1)) {
+ ; /* ok */
+ } else if (!patch->lines_added && !patch->lines_deleted) {
+ /* mode-only change: update the current */
+ if (get_current_sha1(patch->old_name, sha1))
+ die("mode change for %s, which is not "
+ "in current HEAD", name);
+ } else
+ die("sha1 information is lacking or useless "
+ "(%s).", name);
+
+ ce = make_cache_entry(patch->old_mode, sha1, name, 0, 0);
+ if (!ce)
+ die(_("make_cache_entry failed for path '%s'"), name);
+ if (add_index_entry(&result, ce, ADD_CACHE_OK_TO_ADD))
+ die ("Could not add %s to temporary index", name);
+ }
+
+ hold_lock_file_for_update(&lock, filename, LOCK_DIE_ON_ERROR);
+ if (write_locked_index(&result, &lock, COMMIT_LOCK))
+ die ("Could not write temporary index to %s", filename);
+
+ discard_index(&result);
+}
+
+static void stat_patch_list(struct patch *patch)
+{
+ int files, adds, dels;
+
+ for (files = adds = dels = 0 ; patch ; patch = patch->next) {
+ files++;
+ adds += patch->lines_added;
+ dels += patch->lines_deleted;
+ show_stats(patch);
+ }
+
+ print_stat_summary(stdout, files, adds, dels);
+}
+
+static void numstat_patch_list(struct patch *patch)
+{
+ for ( ; patch; patch = patch->next) {
+ const char *name;
+ name = patch->new_name ? patch->new_name : patch->old_name;
+ if (patch->is_binary)
+ printf("-\t-\t");
+ else
+ printf("%d\t%d\t", patch->lines_added, patch->lines_deleted);
+ write_name_quoted(name, stdout, line_termination);
+ }
+}
+
+static void show_file_mode_name(const char *newdelete, unsigned int mode, const char *name)
+{
+ if (mode)
+ printf(" %s mode %06o %s\n", newdelete, mode, name);
+ else
+ printf(" %s %s\n", newdelete, name);
+}
+
+static void show_mode_change(struct patch *p, int show_name)
+{
+ if (p->old_mode && p->new_mode && p->old_mode != p->new_mode) {
+ if (show_name)
+ printf(" mode change %06o => %06o %s\n",
+ p->old_mode, p->new_mode, p->new_name);
+ else
+ printf(" mode change %06o => %06o\n",
+ p->old_mode, p->new_mode);
+ }
+}
+
+static void show_rename_copy(struct patch *p)
+{
+ const char *renamecopy = p->is_rename ? "rename" : "copy";
+ const char *old, *new;
+
+ /* Find common prefix */
+ old = p->old_name;
+ new = p->new_name;
+ while (1) {
+ const char *slash_old, *slash_new;
+ slash_old = strchr(old, '/');
+ slash_new = strchr(new, '/');
+ if (!slash_old ||
+ !slash_new ||
+ slash_old - old != slash_new - new ||
+ memcmp(old, new, slash_new - new))
+ break;
+ old = slash_old + 1;
+ new = slash_new + 1;
+ }
+ /* p->old_name thru old is the common prefix, and old and new
+ * through the end of names are renames
+ */
+ if (old != p->old_name)
+ printf(" %s %.*s{%s => %s} (%d%%)\n", renamecopy,
+ (int)(old - p->old_name), p->old_name,
+ old, new, p->score);
+ else
+ printf(" %s %s => %s (%d%%)\n", renamecopy,
+ p->old_name, p->new_name, p->score);
+ show_mode_change(p, 0);
+}
+
+static void summary_patch_list(struct patch *patch)
+{
+ struct patch *p;
+
+ for (p = patch; p; p = p->next) {
+ if (p->is_new)
+ show_file_mode_name("create", p->new_mode, p->new_name);
+ else if (p->is_delete)
+ show_file_mode_name("delete", p->old_mode, p->old_name);
+ else {
+ if (p->is_rename || p->is_copy)
+ show_rename_copy(p);
+ else {
+ if (p->score) {
+ printf(" rewrite %s (%d%%)\n",
+ p->new_name, p->score);
+ show_mode_change(p, 0);
+ }
+ else
+ show_mode_change(p, 1);
+ }
+ }
+ }
+}
+
+static void patch_stats(struct patch *patch)
+{
+ int lines = patch->lines_added + patch->lines_deleted;
+
+ if (lines > max_change)
+ max_change = lines;
+ if (patch->old_name) {
+ int len = quote_c_style(patch->old_name, NULL, NULL, 0);
+ if (!len)
+ len = strlen(patch->old_name);
+ if (len > max_len)
+ max_len = len;
+ }
+ if (patch->new_name) {
+ int len = quote_c_style(patch->new_name, NULL, NULL, 0);
+ if (!len)
+ len = strlen(patch->new_name);
+ if (len > max_len)
+ max_len = len;
+ }
+}
+
+static void remove_file(struct patch *patch, int rmdir_empty)
+{
+ if (update_index) {
+ if (remove_file_from_cache(patch->old_name) < 0)
+ die(_("unable to remove %s from index"), patch->old_name);
+ }
+ if (!cached) {
+ if (!remove_or_warn(patch->old_mode, patch->old_name) && rmdir_empty) {
+ remove_path(patch->old_name);
+ }
+ }
+}
+
+static void add_index_file(const char *path, unsigned mode, void *buf, unsigned long size)
+{
+ struct stat st;
+ struct cache_entry *ce;
+ int namelen = strlen(path);
+ unsigned ce_size = cache_entry_size(namelen);
+
+ if (!update_index)
+ return;
+
+ ce = xcalloc(1, ce_size);
+ memcpy(ce->name, path, namelen);
+ ce->ce_mode = create_ce_mode(mode);
+ ce->ce_flags = create_ce_flags(0);
+ ce->ce_namelen = namelen;
+ if (S_ISGITLINK(mode)) {
+ const char *s;
+
+ if (!skip_prefix(buf, "Subproject commit ", &s) ||
+ get_sha1_hex(s, ce->sha1))
+ die(_("corrupt patch for submodule %s"), path);
+ } else {
+ if (!cached) {
+ if (lstat(path, &st) < 0)
+ die_errno(_("unable to stat newly created file '%s'"),
+ path);
+ fill_stat_cache_info(ce, &st);
+ }
+ if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0)
+ die(_("unable to create backing store for newly created file %s"), path);
+ }
+ if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
+ die(_("unable to add cache entry for %s"), path);
+}
+
+static int try_create_file(const char *path, unsigned int mode, const char *buf, unsigned long size)
+{
+ int fd;
+ struct strbuf nbuf = STRBUF_INIT;
+
+ if (S_ISGITLINK(mode)) {
+ struct stat st;
+ if (!lstat(path, &st) && S_ISDIR(st.st_mode))
+ return 0;
+ return mkdir(path, 0777);
+ }
+
+ if (has_symlinks && S_ISLNK(mode))
+ /* Although buf:size is counted string, it also is NUL
+ * terminated.
+ */
+ return symlink(buf, path);
+
+ fd = open(path, O_CREAT | O_EXCL | O_WRONLY, (mode & 0100) ? 0777 : 0666);
+ if (fd < 0)
+ return -1;
+
+ if (convert_to_working_tree(path, buf, size, &nbuf)) {
+ size = nbuf.len;
+ buf = nbuf.buf;
+ }
+ write_or_die(fd, buf, size);
+ strbuf_release(&nbuf);
+
+ if (close(fd) < 0)
+ die_errno(_("closing file '%s'"), path);
+ return 0;
+}
+
+/*
+ * We optimistically assume that the directories exist,
+ * which is true 99% of the time anyway. If they don't,
+ * we create them and try again.
+ */
+static void create_one_file(char *path, unsigned mode, const char *buf, unsigned long size)
+{
+ if (cached)
+ return;
+ if (!try_create_file(path, mode, buf, size))
+ return;
+
+ if (errno == ENOENT) {
+ if (safe_create_leading_directories(path))
+ return;
+ if (!try_create_file(path, mode, buf, size))
+ return;
+ }
+
+ if (errno == EEXIST || errno == EACCES) {
+ /* We may be trying to create a file where a directory
+ * used to be.
+ */
+ struct stat st;
+ if (!lstat(path, &st) && (!S_ISDIR(st.st_mode) || !rmdir(path)))
+ errno = EEXIST;
+ }
+
+ if (errno == EEXIST) {
+ unsigned int nr = getpid();
+
+ for (;;) {
+ char newpath[PATH_MAX];
+ mksnpath(newpath, sizeof(newpath), "%s~%u", path, nr);
+ if (!try_create_file(newpath, mode, buf, size)) {
+ if (!rename(newpath, path))
+ return;
+ unlink_or_warn(newpath);
+ break;
+ }
+ if (errno != EEXIST)
+ break;
+ ++nr;
+ }
+ }
+ die_errno(_("unable to write file '%s' mode %o"), path, mode);
+}
+
+static void add_conflicted_stages_file(struct patch *patch)
+{
+ int stage, namelen;
+ unsigned ce_size, mode;
+ struct cache_entry *ce;
+
+ if (!update_index)
+ return;
+ namelen = strlen(patch->new_name);
+ ce_size = cache_entry_size(namelen);
+ mode = patch->new_mode ? patch->new_mode : (S_IFREG | 0644);
+
+ remove_file_from_cache(patch->new_name);
+ for (stage = 1; stage < 4; stage++) {
+ if (is_null_sha1(patch->threeway_stage[stage - 1]))
+ continue;
+ ce = xcalloc(1, ce_size);
+ memcpy(ce->name, patch->new_name, namelen);
+ ce->ce_mode = create_ce_mode(mode);
+ ce->ce_flags = create_ce_flags(stage);
+ ce->ce_namelen = namelen;
+ hashcpy(ce->sha1, patch->threeway_stage[stage - 1]);
+ if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
+ die(_("unable to add cache entry for %s"), patch->new_name);
+ }
+}
+
+static void create_file(struct patch *patch)
+{
+ char *path = patch->new_name;
+ unsigned mode = patch->new_mode;
+ unsigned long size = patch->resultsize;
+ char *buf = patch->result;
+
+ if (!mode)
+ mode = S_IFREG | 0644;
+ create_one_file(path, mode, buf, size);
+
+ if (patch->conflicted_threeway)
+ add_conflicted_stages_file(patch);
+ else
+ add_index_file(path, mode, buf, size);
+}
+
+/* phase zero is to remove, phase one is to create */
+static void write_out_one_result(struct patch *patch, int phase)
+{
+ if (patch->is_delete > 0) {
+ if (phase == 0)
+ remove_file(patch, 1);
+ return;
+ }
+ if (patch->is_new > 0 || patch->is_copy) {
+ if (phase == 1)
+ create_file(patch);
+ return;
+ }
+ /*
+ * Rename or modification boils down to the same
+ * thing: remove the old, write the new
+ */
+ if (phase == 0)
+ remove_file(patch, patch->is_rename);
+ if (phase == 1)
+ create_file(patch);
+}
+
+static int write_out_one_reject(struct patch *patch)
+{
+ FILE *rej;
+ char namebuf[PATH_MAX];
+ struct fragment *frag;
+ int cnt = 0;
+ struct strbuf sb = STRBUF_INIT;
+
+ for (cnt = 0, frag = patch->fragments; frag; frag = frag->next) {
+ if (!frag->rejected)
+ continue;
+ cnt++;
+ }
+
+ if (!cnt) {
+ if (apply_verbosely)
+ say_patch_name(stderr,
+ _("Applied patch %s cleanly."), patch);
+ return 0;
+ }
+
+ /* This should not happen, because a removal patch that leaves
+ * contents are marked "rejected" at the patch level.
+ */
+ if (!patch->new_name)
+ die(_("internal error"));
+
+ /* Say this even without --verbose */
+ strbuf_addf(&sb, Q_("Applying patch %%s with %d reject...",
+ "Applying patch %%s with %d rejects...",
+ cnt),
+ cnt);
+ say_patch_name(stderr, sb.buf, patch);
+ strbuf_release(&sb);
+
+ cnt = strlen(patch->new_name);
+ if (ARRAY_SIZE(namebuf) <= cnt + 5) {
+ cnt = ARRAY_SIZE(namebuf) - 5;
+ warning(_("truncating .rej filename to %.*s.rej"),
+ cnt - 1, patch->new_name);
+ }
+ memcpy(namebuf, patch->new_name, cnt);
+ memcpy(namebuf + cnt, ".rej", 5);
+
+ rej = fopen(namebuf, "w");
+ if (!rej)
+ return error(_("cannot open %s: %s"), namebuf, strerror(errno));
+
+ /* Normal git tools never deal with .rej, so do not pretend
+ * this is a git patch by saying --git or giving extended
+ * headers. While at it, maybe please "kompare" that wants
+ * the trailing TAB and some garbage at the end of line ;-).
+ */
+ fprintf(rej, "diff a/%s b/%s\t(rejected hunks)\n",
+ patch->new_name, patch->new_name);
+ for (cnt = 1, frag = patch->fragments;
+ frag;
+ cnt++, frag = frag->next) {
+ if (!frag->rejected) {
+ fprintf_ln(stderr, _("Hunk #%d applied cleanly."), cnt);
+ continue;
+ }
+ fprintf_ln(stderr, _("Rejected hunk #%d."), cnt);
+ fprintf(rej, "%.*s", frag->size, frag->patch);
+ if (frag->patch[frag->size-1] != '\n')
+ fputc('\n', rej);
+ }
+ fclose(rej);
+ return -1;
+}
+
+static int write_out_results(struct patch *list)
+{
+ int phase;
+ int errs = 0;
+ struct patch *l;
+ struct string_list cpath = STRING_LIST_INIT_DUP;
+
+ for (phase = 0; phase < 2; phase++) {
+ l = list;
+ while (l) {
+ if (l->rejected)
+ errs = 1;
+ else {
+ write_out_one_result(l, phase);
+ if (phase == 1) {
+ if (write_out_one_reject(l))
+ errs = 1;
+ if (l->conflicted_threeway) {
+ string_list_append(&cpath, l->new_name);
+ errs = 1;
+ }
+ }
+ }
+ l = l->next;
+ }
+ }
+
+ if (cpath.nr) {
+ struct string_list_item *item;
+
+ string_list_sort(&cpath);
+ for_each_string_list_item(item, &cpath)
+ fprintf(stderr, "U %s\n", item->string);
+ string_list_clear(&cpath, 0);
+
+ rerere(0);
+ }
+
+ return errs;
+}
+
+static struct lock_file lock_file;
+
+#define INACCURATE_EOF (1<<0)
+#define RECOUNT (1<<1)
+
+static int apply_patch(int fd, const char *filename, int options)
+{
+ size_t offset;
+ struct strbuf buf = STRBUF_INIT; /* owns the patch text */
+ struct patch *list = NULL, **listp = &list;
+ int skipped_patch = 0;
+
+ patch_input_file = filename;
+ read_patch_file(&buf, fd);
+ offset = 0;
+ while (offset < buf.len) {
+ struct patch *patch;
+ int nr;
+
+ patch = xcalloc(1, sizeof(*patch));
+ patch->inaccurate_eof = !!(options & INACCURATE_EOF);
+ patch->recount = !!(options & RECOUNT);
+ nr = parse_chunk(buf.buf + offset, buf.len - offset, patch);
+ if (nr < 0)
+ break;
+ if (apply_in_reverse)
+ reverse_patches(patch);
+ if (use_patch(patch)) {
+ patch_stats(patch);
+ *listp = patch;
+ listp = &patch->next;
+ }
+ else {
+ free_patch(patch);
+ skipped_patch++;
+ }
+ offset += nr;
+ }
+
+ if (!list && !skipped_patch)
+ die(_("unrecognized input"));
+
+ if (whitespace_error && (ws_error_action == die_on_ws_error))
+ apply = 0;
+
+ update_index = check_index && apply;
+ if (update_index && newfd < 0)
+ newfd = hold_locked_index(&lock_file, 1);
+
+ if (check_index) {
+ if (read_cache() < 0)
+ die(_("unable to read index file"));
+ }
+
+ if ((check || apply) &&
+ check_patch_list(list) < 0 &&
+ !apply_with_reject)
+ exit(1);
+
+ if (apply && write_out_results(list)) {
+ if (apply_with_reject)
+ exit(1);
+ /* with --3way, we still need to write the index out */
+ return 1;
+ }
+
+ if (fake_ancestor)
+ build_fake_ancestor(list, fake_ancestor);
+
+ if (diffstat)
+ stat_patch_list(list);
+
+ if (numstat)
+ numstat_patch_list(list);
+
+ if (summary)
+ summary_patch_list(list);
+
+ free_patch_list(list);
+ strbuf_release(&buf);
+ string_list_clear(&fn_table, 0);
+ return 0;
+}
+
+static void git_apply_config(void)
+{
+ git_config_get_string_const("apply.whitespace", &apply_default_whitespace);
+ git_config_get_string_const("apply.ignorewhitespace", &apply_default_ignorewhitespace);
+ git_config(git_default_config, NULL);
+}
+
+static int option_parse_exclude(const struct option *opt,
+ const char *arg, int unset)
+{
+ add_name_limit(arg, 1);
+ return 0;
+}
+
+static int option_parse_include(const struct option *opt,
+ const char *arg, int unset)
+{
+ add_name_limit(arg, 0);
+ has_include = 1;
+ return 0;
+}
+
+static int option_parse_p(const struct option *opt,
+ const char *arg, int unset)
+{
+ p_value = atoi(arg);
+ p_value_known = 1;
+ return 0;
+}
+
+static int option_parse_z(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset)
+ line_termination = '\n';
+ else
+ line_termination = 0;
+ return 0;
+}
+
+static int option_parse_space_change(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset)
+ ws_ignore_action = ignore_ws_none;
+ else
+ ws_ignore_action = ignore_ws_change;
+ return 0;
+}
+
+static int option_parse_whitespace(const struct option *opt,
+ const char *arg, int unset)
+{
+ const char **whitespace_option = opt->value;
+
+ *whitespace_option = arg;
+ parse_whitespace_option(arg);
+ return 0;
+}
+
+static int option_parse_directory(const struct option *opt,
+ const char *arg, int unset)
+{
+ root_len = strlen(arg);
+ if (root_len && arg[root_len - 1] != '/') {
+ char *new_root;
+ root = new_root = xmalloc(root_len + 2);
+ strcpy(new_root, arg);
+ strcpy(new_root + root_len++, "/");
+ } else
+ root = arg;
+ return 0;
+}
+
+int cmd_apply(int argc, const char **argv, const char *prefix_)
+{
+ int i;
+ int errs = 0;
+ int is_not_gitdir = !startup_info->have_repository;
+ int force_apply = 0;
+
+ const char *whitespace_option = NULL;
+
+ struct option builtin_apply_options[] = {
+ { OPTION_CALLBACK, 0, "exclude", NULL, N_("path"),
+ N_("don't apply changes matching the given path"),
+ 0, option_parse_exclude },
+ { OPTION_CALLBACK, 0, "include", NULL, N_("path"),
+ N_("apply changes matching the given path"),
+ 0, option_parse_include },
+ { OPTION_CALLBACK, 'p', NULL, NULL, N_("num"),
+ N_("remove <num> leading slashes from traditional diff paths"),
+ 0, option_parse_p },
+ OPT_BOOL(0, "no-add", &no_add,
+ N_("ignore additions made by the patch")),
+ OPT_BOOL(0, "stat", &diffstat,
+ N_("instead of applying the patch, output diffstat for the input")),
+ OPT_NOOP_NOARG(0, "allow-binary-replacement"),
+ OPT_NOOP_NOARG(0, "binary"),
+ OPT_BOOL(0, "numstat", &numstat,
+ N_("show number of added and deleted lines in decimal notation")),
+ OPT_BOOL(0, "summary", &summary,
+ N_("instead of applying the patch, output a summary for the input")),
+ OPT_BOOL(0, "check", &check,
+ N_("instead of applying the patch, see if the patch is applicable")),
+ OPT_BOOL(0, "index", &check_index,
+ N_("make sure the patch is applicable to the current index")),
+ OPT_BOOL(0, "cached", &cached,
+ N_("apply a patch without touching the working tree")),
+ OPT_BOOL(0, "unsafe-paths", &unsafe_paths,
+ N_("accept a patch that touches outside the working area")),
+ OPT_BOOL(0, "apply", &force_apply,
+ N_("also apply the patch (use with --stat/--summary/--check)")),
+ OPT_BOOL('3', "3way", &threeway,
+ N_( "attempt three-way merge if a patch does not apply")),
+ OPT_FILENAME(0, "build-fake-ancestor", &fake_ancestor,
+ N_("build a temporary index based on embedded index information")),
+ { OPTION_CALLBACK, 'z', NULL, NULL, NULL,
+ N_("paths are separated with NUL character"),
+ PARSE_OPT_NOARG, option_parse_z },
+ OPT_INTEGER('C', NULL, &p_context,
+ N_("ensure at least <n> lines of context match")),
+ { OPTION_CALLBACK, 0, "whitespace", &whitespace_option, N_("action"),
+ N_("detect new or modified lines that have whitespace errors"),
+ 0, option_parse_whitespace },
+ { OPTION_CALLBACK, 0, "ignore-space-change", NULL, NULL,
+ N_("ignore changes in whitespace when finding context"),
+ PARSE_OPT_NOARG, option_parse_space_change },
+ { OPTION_CALLBACK, 0, "ignore-whitespace", NULL, NULL,
+ N_("ignore changes in whitespace when finding context"),
+ PARSE_OPT_NOARG, option_parse_space_change },
+ OPT_BOOL('R', "reverse", &apply_in_reverse,
+ N_("apply the patch in reverse")),
+ OPT_BOOL(0, "unidiff-zero", &unidiff_zero,
+ N_("don't expect at least one line of context")),
+ OPT_BOOL(0, "reject", &apply_with_reject,
+ N_("leave the rejected hunks in corresponding *.rej files")),
+ OPT_BOOL(0, "allow-overlap", &allow_overlap,
+ N_("allow overlapping hunks")),
+ OPT__VERBOSE(&apply_verbosely, N_("be verbose")),
+ OPT_BIT(0, "inaccurate-eof", &options,
+ N_("tolerate incorrectly detected missing new-line at the end of file"),
+ INACCURATE_EOF),
+ OPT_BIT(0, "recount", &options,
+ N_("do not trust the line counts in the hunk headers"),
+ RECOUNT),
+ { OPTION_CALLBACK, 0, "directory", NULL, N_("root"),
+ N_("prepend <root> to all filenames"),
+ 0, option_parse_directory },
+ OPT_END()
+ };
+
+ prefix = prefix_;
+ prefix_length = prefix ? strlen(prefix) : 0;
+ git_apply_config();
+ if (apply_default_whitespace)
+ parse_whitespace_option(apply_default_whitespace);
+ if (apply_default_ignorewhitespace)
+ parse_ignorewhitespace_option(apply_default_ignorewhitespace);
+
+ argc = parse_options(argc, argv, prefix, builtin_apply_options,
+ apply_usage, 0);
+
+ if (apply_with_reject && threeway)
+ die("--reject and --3way cannot be used together.");
+ if (cached && threeway)
+ die("--cached and --3way cannot be used together.");
+ if (threeway) {
+ if (is_not_gitdir)
+ die(_("--3way outside a repository"));
+ check_index = 1;
+ }
+ if (apply_with_reject)
+ apply = apply_verbosely = 1;
+ if (!force_apply && (diffstat || numstat || summary || check || fake_ancestor))
+ apply = 0;
+ if (check_index && is_not_gitdir)
+ die(_("--index outside a repository"));
+ if (cached) {
+ if (is_not_gitdir)
+ die(_("--cached outside a repository"));
+ check_index = 1;
+ }
+ if (check_index)
+ unsafe_paths = 0;
+
+ for (i = 0; i < argc; i++) {
+ const char *arg = argv[i];
+ int fd;
+
+ if (!strcmp(arg, "-")) {
+ errs |= apply_patch(0, "<stdin>", options);
+ read_stdin = 0;
+ continue;
+ } else if (0 < prefix_length)
+ arg = prefix_filename(prefix, prefix_length, arg);
+
+ fd = open(arg, O_RDONLY);
+ if (fd < 0)
+ die_errno(_("can't open patch '%s'"), arg);
+ read_stdin = 0;
+ set_default_whitespace_mode(whitespace_option);
+ errs |= apply_patch(fd, arg, options);
+ close(fd);
+ }
+ set_default_whitespace_mode(whitespace_option);
+ if (read_stdin)
+ errs |= apply_patch(0, "<stdin>", options);
+ if (whitespace_error) {
+ if (squelch_whitespace_errors &&
+ squelch_whitespace_errors < whitespace_error) {
+ int squelched =
+ whitespace_error - squelch_whitespace_errors;
+ warning(Q_("squelched %d whitespace error",
+ "squelched %d whitespace errors",
+ squelched),
+ squelched);
+ }
+ if (ws_error_action == die_on_ws_error)
+ die(Q_("%d line adds whitespace errors.",
+ "%d lines add whitespace errors.",
+ whitespace_error),
+ whitespace_error);
+ if (applied_after_fixing_ws && apply)
+ warning("%d line%s applied after"
+ " fixing whitespace errors.",
+ applied_after_fixing_ws,
+ applied_after_fixing_ws == 1 ? "" : "s");
+ else if (whitespace_error)
+ warning(Q_("%d line adds whitespace errors.",
+ "%d lines add whitespace errors.",
+ whitespace_error),
+ whitespace_error);
+ }
+
+ if (update_index) {
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ die(_("Unable to write new index file"));
+ }
+
+ return !!errs;
+}
diff --git a/builtin/archive.c b/builtin/archive.c
new file mode 100644
index 0000000..a1e3b94
--- /dev/null
+++ b/builtin/archive.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2006 Franck Bui-Huu
+ * Copyright (c) 2006 Rene Scharfe
+ */
+#include "cache.h"
+#include "builtin.h"
+#include "archive.h"
+#include "transport.h"
+#include "parse-options.h"
+#include "pkt-line.h"
+#include "sideband.h"
+
+static void create_output_file(const char *output_file)
+{
+ int output_fd = open(output_file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
+ if (output_fd < 0)
+ die_errno(_("could not create archive file '%s'"), output_file);
+ if (output_fd != 1) {
+ if (dup2(output_fd, 1) < 0)
+ die_errno(_("could not redirect output"));
+ else
+ close(output_fd);
+ }
+}
+
+static int run_remote_archiver(int argc, const char **argv,
+ const char *remote, const char *exec,
+ const char *name_hint)
+{
+ char *buf;
+ int fd[2], i, rv;
+ struct transport *transport;
+ struct remote *_remote;
+
+ _remote = remote_get(remote);
+ if (!_remote->url[0])
+ die(_("git archive: Remote with no URL"));
+ transport = transport_get(_remote, _remote->url[0]);
+ transport_connect(transport, "git-upload-archive", exec, fd);
+
+ /*
+ * Inject a fake --format field at the beginning of the
+ * arguments, with the format inferred from our output
+ * filename. This way explicit --format options can override
+ * it.
+ */
+ if (name_hint) {
+ const char *format = archive_format_from_filename(name_hint);
+ if (format)
+ packet_write(fd[1], "argument --format=%s\n", format);
+ }
+ for (i = 1; i < argc; i++)
+ packet_write(fd[1], "argument %s\n", argv[i]);
+ packet_flush(fd[1]);
+
+ buf = packet_read_line(fd[0], NULL);
+ if (!buf)
+ die(_("git archive: expected ACK/NAK, got EOF"));
+ if (strcmp(buf, "ACK")) {
+ if (starts_with(buf, "NACK "))
+ die(_("git archive: NACK %s"), buf + 5);
+ if (starts_with(buf, "ERR "))
+ die(_("remote error: %s"), buf + 4);
+ die(_("git archive: protocol error"));
+ }
+
+ if (packet_read_line(fd[0], NULL))
+ die(_("git archive: expected a flush"));
+
+ /* Now, start reading from fd[0] and spit it out to stdout */
+ rv = recv_sideband("archive", fd[0], 1);
+ rv |= transport_disconnect(transport);
+
+ return !!rv;
+}
+
+#define PARSE_OPT_KEEP_ALL ( PARSE_OPT_KEEP_DASHDASH | \
+ PARSE_OPT_KEEP_ARGV0 | \
+ PARSE_OPT_KEEP_UNKNOWN | \
+ PARSE_OPT_NO_INTERNAL_HELP )
+
+int cmd_archive(int argc, const char **argv, const char *prefix)
+{
+ const char *exec = "git-upload-archive";
+ const char *output = NULL;
+ const char *remote = NULL;
+ struct option local_opts[] = {
+ OPT_STRING('o', "output", &output, N_("file"),
+ N_("write the archive to this file")),
+ OPT_STRING(0, "remote", &remote, N_("repo"),
+ N_("retrieve the archive from remote repository <repo>")),
+ OPT_STRING(0, "exec", &exec, N_("command"),
+ N_("path to the remote git-upload-archive command")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, local_opts, NULL,
+ PARSE_OPT_KEEP_ALL);
+
+ if (output)
+ create_output_file(output);
+
+ if (remote)
+ return run_remote_archiver(argc, argv, remote, exec, output);
+
+ setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
+
+ return write_archive(argc, argv, prefix, 1, output, 0);
+}
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
new file mode 100644
index 0000000..3324229
--- /dev/null
+++ b/builtin/bisect--helper.c
@@ -0,0 +1,31 @@
+#include "builtin.h"
+#include "cache.h"
+#include "parse-options.h"
+#include "bisect.h"
+
+static const char * const git_bisect_helper_usage[] = {
+ N_("git bisect--helper --next-all [--no-checkout]"),
+ NULL
+};
+
+int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
+{
+ int next_all = 0;
+ int no_checkout = 0;
+ struct option options[] = {
+ OPT_BOOL(0, "next-all", &next_all,
+ N_("perform 'git bisect next'")),
+ OPT_BOOL(0, "no-checkout", &no_checkout,
+ N_("update BISECT_HEAD instead of checking out the current commit")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_bisect_helper_usage, 0);
+
+ if (!next_all)
+ usage_with_options(git_bisect_helper_usage, options);
+
+ /* next-all */
+ return bisect_next_all(prefix, no_checkout);
+}
diff --git a/builtin/blame.c b/builtin/blame.c
new file mode 100644
index 0000000..ff97825
--- /dev/null
+++ b/builtin/blame.c
@@ -0,0 +1,2806 @@
+/*
+ * Blame
+ *
+ * Copyright (c) 2006, 2014 by its authors
+ * See COPYING for licensing conditions
+ */
+
+#include "cache.h"
+#include "builtin.h"
+#include "blob.h"
+#include "commit.h"
+#include "tag.h"
+#include "tree-walk.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "revision.h"
+#include "quote.h"
+#include "xdiff-interface.h"
+#include "cache-tree.h"
+#include "string-list.h"
+#include "mailmap.h"
+#include "mergesort.h"
+#include "parse-options.h"
+#include "prio-queue.h"
+#include "utf8.h"
+#include "userdiff.h"
+#include "line-range.h"
+#include "line-log.h"
+#include "dir.h"
+
+static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] [--] file");
+
+static const char *blame_opt_usage[] = {
+ blame_usage,
+ "",
+ N_("<rev-opts> are documented in git-rev-list(1)"),
+ NULL
+};
+
+static int longest_file;
+static int longest_author;
+static int max_orig_digits;
+static int max_digits;
+static int max_score_digits;
+static int show_root;
+static int reverse;
+static int blank_boundary;
+static int incremental;
+static int xdl_opts;
+static int abbrev = -1;
+static int no_whole_file_rename;
+
+static enum date_mode blame_date_mode = DATE_ISO8601;
+static size_t blame_date_width;
+
+static struct string_list mailmap;
+
+#ifndef DEBUG
+#define DEBUG 0
+#endif
+
+/* stats */
+static int num_read_blob;
+static int num_get_patch;
+static int num_commits;
+
+#define PICKAXE_BLAME_MOVE 01
+#define PICKAXE_BLAME_COPY 02
+#define PICKAXE_BLAME_COPY_HARDER 04
+#define PICKAXE_BLAME_COPY_HARDEST 010
+
+/*
+ * blame for a blame_entry with score lower than these thresholds
+ * is not passed to the parent using move/copy logic.
+ */
+static unsigned blame_move_score;
+static unsigned blame_copy_score;
+#define BLAME_DEFAULT_MOVE_SCORE 20
+#define BLAME_DEFAULT_COPY_SCORE 40
+
+/* Remember to update object flag allocation in object.h */
+#define METAINFO_SHOWN (1u<<12)
+#define MORE_THAN_ONE_PATH (1u<<13)
+
+/*
+ * One blob in a commit that is being suspected
+ */
+struct origin {
+ int refcnt;
+ /* Record preceding blame record for this blob */
+ struct origin *previous;
+ /* origins are put in a list linked via `next' hanging off the
+ * corresponding commit's util field in order to make finding
+ * them fast. The presence in this chain does not count
+ * towards the origin's reference count. It is tempting to
+ * let it count as long as the commit is pending examination,
+ * but even under circumstances where the commit will be
+ * present multiple times in the priority queue of unexamined
+ * commits, processing the first instance will not leave any
+ * work requiring the origin data for the second instance. An
+ * interspersed commit changing that would have to be
+ * preexisting with a different ancestry and with the same
+ * commit date in order to wedge itself between two instances
+ * of the same commit in the priority queue _and_ produce
+ * blame entries relevant for it. While we don't want to let
+ * us get tripped up by this case, it certainly does not seem
+ * worth optimizing for.
+ */
+ struct origin *next;
+ struct commit *commit;
+ /* `suspects' contains blame entries that may be attributed to
+ * this origin's commit or to parent commits. When a commit
+ * is being processed, all suspects will be moved, either by
+ * assigning them to an origin in a different commit, or by
+ * shipping them to the scoreboard's ent list because they
+ * cannot be attributed to a different commit.
+ */
+ struct blame_entry *suspects;
+ mmfile_t file;
+ unsigned char blob_sha1[20];
+ unsigned mode;
+ /* guilty gets set when shipping any suspects to the final
+ * blame list instead of other commits
+ */
+ char guilty;
+ char path[FLEX_ARRAY];
+};
+
+static int diff_hunks(mmfile_t *file_a, mmfile_t *file_b, long ctxlen,
+ xdl_emit_hunk_consume_func_t hunk_func, void *cb_data)
+{
+ xpparam_t xpp = {0};
+ xdemitconf_t xecfg = {0};
+ xdemitcb_t ecb = {NULL};
+
+ xpp.flags = xdl_opts;
+ xecfg.ctxlen = ctxlen;
+ xecfg.hunk_func = hunk_func;
+ ecb.priv = cb_data;
+ return xdi_diff(file_a, file_b, &xpp, &xecfg, &ecb);
+}
+
+/*
+ * Prepare diff_filespec and convert it using diff textconv API
+ * if the textconv driver exists.
+ * Return 1 if the conversion succeeds, 0 otherwise.
+ */
+int textconv_object(const char *path,
+ unsigned mode,
+ const unsigned char *sha1,
+ int sha1_valid,
+ char **buf,
+ unsigned long *buf_size)
+{
+ struct diff_filespec *df;
+ struct userdiff_driver *textconv;
+
+ df = alloc_filespec(path);
+ fill_filespec(df, sha1, sha1_valid, mode);
+ textconv = get_textconv(df);
+ if (!textconv) {
+ free_filespec(df);
+ return 0;
+ }
+
+ *buf_size = fill_textconv(textconv, df, buf);
+ free_filespec(df);
+ return 1;
+}
+
+/*
+ * Given an origin, prepare mmfile_t structure to be used by the
+ * diff machinery
+ */
+static void fill_origin_blob(struct diff_options *opt,
+ struct origin *o, mmfile_t *file)
+{
+ if (!o->file.ptr) {
+ enum object_type type;
+ unsigned long file_size;
+
+ num_read_blob++;
+ if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV) &&
+ textconv_object(o->path, o->mode, o->blob_sha1, 1, &file->ptr, &file_size))
+ ;
+ else
+ file->ptr = read_sha1_file(o->blob_sha1, &type, &file_size);
+ file->size = file_size;
+
+ if (!file->ptr)
+ die("Cannot read blob %s for path %s",
+ sha1_to_hex(o->blob_sha1),
+ o->path);
+ o->file = *file;
+ }
+ else
+ *file = o->file;
+}
+
+/*
+ * Origin is refcounted and usually we keep the blob contents to be
+ * reused.
+ */
+static inline struct origin *origin_incref(struct origin *o)
+{
+ if (o)
+ o->refcnt++;
+ return o;
+}
+
+static void origin_decref(struct origin *o)
+{
+ if (o && --o->refcnt <= 0) {
+ struct origin *p, *l = NULL;
+ if (o->previous)
+ origin_decref(o->previous);
+ free(o->file.ptr);
+ /* Should be present exactly once in commit chain */
+ for (p = o->commit->util; p; l = p, p = p->next) {
+ if (p == o) {
+ if (l)
+ l->next = p->next;
+ else
+ o->commit->util = p->next;
+ free(o);
+ return;
+ }
+ }
+ die("internal error in blame::origin_decref");
+ }
+}
+
+static void drop_origin_blob(struct origin *o)
+{
+ if (o->file.ptr) {
+ free(o->file.ptr);
+ o->file.ptr = NULL;
+ }
+}
+
+/*
+ * Each group of lines is described by a blame_entry; it can be split
+ * as we pass blame to the parents. They are arranged in linked lists
+ * kept as `suspects' of some unprocessed origin, or entered (when the
+ * blame origin has been finalized) into the scoreboard structure.
+ * While the scoreboard structure is only sorted at the end of
+ * processing (according to final image line number), the lists
+ * attached to an origin are sorted by the target line number.
+ */
+struct blame_entry {
+ struct blame_entry *next;
+
+ /* the first line of this group in the final image;
+ * internally all line numbers are 0 based.
+ */
+ int lno;
+
+ /* how many lines this group has */
+ int num_lines;
+
+ /* the commit that introduced this group into the final image */
+ struct origin *suspect;
+
+ /* the line number of the first line of this group in the
+ * suspect's file; internally all line numbers are 0 based.
+ */
+ int s_lno;
+
+ /* how significant this entry is -- cached to avoid
+ * scanning the lines over and over.
+ */
+ unsigned score;
+};
+
+/*
+ * Any merge of blames happens on lists of blames that arrived via
+ * different parents in a single suspect. In this case, we want to
+ * sort according to the suspect line numbers as opposed to the final
+ * image line numbers. The function body is somewhat longish because
+ * it avoids unnecessary writes.
+ */
+
+static struct blame_entry *blame_merge(struct blame_entry *list1,
+ struct blame_entry *list2)
+{
+ struct blame_entry *p1 = list1, *p2 = list2,
+ **tail = &list1;
+
+ if (!p1)
+ return p2;
+ if (!p2)
+ return p1;
+
+ if (p1->s_lno <= p2->s_lno) {
+ do {
+ tail = &p1->next;
+ if ((p1 = *tail) == NULL) {
+ *tail = p2;
+ return list1;
+ }
+ } while (p1->s_lno <= p2->s_lno);
+ }
+ for (;;) {
+ *tail = p2;
+ do {
+ tail = &p2->next;
+ if ((p2 = *tail) == NULL) {
+ *tail = p1;
+ return list1;
+ }
+ } while (p1->s_lno > p2->s_lno);
+ *tail = p1;
+ do {
+ tail = &p1->next;
+ if ((p1 = *tail) == NULL) {
+ *tail = p2;
+ return list1;
+ }
+ } while (p1->s_lno <= p2->s_lno);
+ }
+}
+
+static void *get_next_blame(const void *p)
+{
+ return ((struct blame_entry *)p)->next;
+}
+
+static void set_next_blame(void *p1, void *p2)
+{
+ ((struct blame_entry *)p1)->next = p2;
+}
+
+/*
+ * Final image line numbers are all different, so we don't need a
+ * three-way comparison here.
+ */
+
+static int compare_blame_final(const void *p1, const void *p2)
+{
+ return ((struct blame_entry *)p1)->lno > ((struct blame_entry *)p2)->lno
+ ? 1 : -1;
+}
+
+static int compare_blame_suspect(const void *p1, const void *p2)
+{
+ const struct blame_entry *s1 = p1, *s2 = p2;
+ /*
+ * to allow for collating suspects, we sort according to the
+ * respective pointer value as the primary sorting criterion.
+ * The actual relation is pretty unimportant as long as it
+ * establishes a total order. Comparing as integers gives us
+ * that.
+ */
+ if (s1->suspect != s2->suspect)
+ return (intptr_t)s1->suspect > (intptr_t)s2->suspect ? 1 : -1;
+ if (s1->s_lno == s2->s_lno)
+ return 0;
+ return s1->s_lno > s2->s_lno ? 1 : -1;
+}
+
+static struct blame_entry *blame_sort(struct blame_entry *head,
+ int (*compare_fn)(const void *, const void *))
+{
+ return llist_mergesort (head, get_next_blame, set_next_blame, compare_fn);
+}
+
+static int compare_commits_by_reverse_commit_date(const void *a,
+ const void *b,
+ void *c)
+{
+ return -compare_commits_by_commit_date(a, b, c);
+}
+
+/*
+ * The current state of the blame assignment.
+ */
+struct scoreboard {
+ /* the final commit (i.e. where we started digging from) */
+ struct commit *final;
+ /* Priority queue for commits with unassigned blame records */
+ struct prio_queue commits;
+ struct rev_info *revs;
+ const char *path;
+
+ /*
+ * The contents in the final image.
+ * Used by many functions to obtain contents of the nth line,
+ * indexed with scoreboard.lineno[blame_entry.lno].
+ */
+ const char *final_buf;
+ unsigned long final_buf_size;
+
+ /* linked list of blames */
+ struct blame_entry *ent;
+
+ /* look-up a line in the final buffer */
+ int num_lines;
+ int *lineno;
+};
+
+static void sanity_check_refcnt(struct scoreboard *);
+
+/*
+ * If two blame entries that are next to each other came from
+ * contiguous lines in the same origin (i.e. <commit, path> pair),
+ * merge them together.
+ */
+static void coalesce(struct scoreboard *sb)
+{
+ struct blame_entry *ent, *next;
+
+ for (ent = sb->ent; ent && (next = ent->next); ent = next) {
+ if (ent->suspect == next->suspect &&
+ ent->s_lno + ent->num_lines == next->s_lno) {
+ ent->num_lines += next->num_lines;
+ ent->next = next->next;
+ origin_decref(next->suspect);
+ free(next);
+ ent->score = 0;
+ next = ent; /* again */
+ }
+ }
+
+ if (DEBUG) /* sanity */
+ sanity_check_refcnt(sb);
+}
+
+/*
+ * Merge the given sorted list of blames into a preexisting origin.
+ * If there were no previous blames to that commit, it is entered into
+ * the commit priority queue of the score board.
+ */
+
+static void queue_blames(struct scoreboard *sb, struct origin *porigin,
+ struct blame_entry *sorted)
+{
+ if (porigin->suspects)
+ porigin->suspects = blame_merge(porigin->suspects, sorted);
+ else {
+ struct origin *o;
+ for (o = porigin->commit->util; o; o = o->next) {
+ if (o->suspects) {
+ porigin->suspects = sorted;
+ return;
+ }
+ }
+ porigin->suspects = sorted;
+ prio_queue_put(&sb->commits, porigin->commit);
+ }
+}
+
+/*
+ * Given a commit and a path in it, create a new origin structure.
+ * The callers that add blame to the scoreboard should use
+ * get_origin() to obtain shared, refcounted copy instead of calling
+ * this function directly.
+ */
+static struct origin *make_origin(struct commit *commit, const char *path)
+{
+ struct origin *o;
+ o = xcalloc(1, sizeof(*o) + strlen(path) + 1);
+ o->commit = commit;
+ o->refcnt = 1;
+ o->next = commit->util;
+ commit->util = o;
+ strcpy(o->path, path);
+ return o;
+}
+
+/*
+ * Locate an existing origin or create a new one.
+ * This moves the origin to front position in the commit util list.
+ */
+static struct origin *get_origin(struct scoreboard *sb,
+ struct commit *commit,
+ const char *path)
+{
+ struct origin *o, *l;
+
+ for (o = commit->util, l = NULL; o; l = o, o = o->next) {
+ if (!strcmp(o->path, path)) {
+ /* bump to front */
+ if (l) {
+ l->next = o->next;
+ o->next = commit->util;
+ commit->util = o;
+ }
+ return origin_incref(o);
+ }
+ }
+ return make_origin(commit, path);
+}
+
+/*
+ * Fill the blob_sha1 field of an origin if it hasn't, so that later
+ * call to fill_origin_blob() can use it to locate the data. blob_sha1
+ * for an origin is also used to pass the blame for the entire file to
+ * the parent to detect the case where a child's blob is identical to
+ * that of its parent's.
+ *
+ * This also fills origin->mode for corresponding tree path.
+ */
+static int fill_blob_sha1_and_mode(struct origin *origin)
+{
+ if (!is_null_sha1(origin->blob_sha1))
+ return 0;
+ if (get_tree_entry(origin->commit->object.sha1,
+ origin->path,
+ origin->blob_sha1, &origin->mode))
+ goto error_out;
+ if (sha1_object_info(origin->blob_sha1, NULL) != OBJ_BLOB)
+ goto error_out;
+ return 0;
+ error_out:
+ hashclr(origin->blob_sha1);
+ origin->mode = S_IFINVALID;
+ return -1;
+}
+
+/*
+ * We have an origin -- check if the same path exists in the
+ * parent and return an origin structure to represent it.
+ */
+static struct origin *find_origin(struct scoreboard *sb,
+ struct commit *parent,
+ struct origin *origin)
+{
+ struct origin *porigin;
+ struct diff_options diff_opts;
+ const char *paths[2];
+
+ /* First check any existing origins */
+ for (porigin = parent->util; porigin; porigin = porigin->next)
+ if (!strcmp(porigin->path, origin->path)) {
+ /*
+ * The same path between origin and its parent
+ * without renaming -- the most common case.
+ */
+ return origin_incref (porigin);
+ }
+
+ /* See if the origin->path is different between parent
+ * and origin first. Most of the time they are the
+ * same and diff-tree is fairly efficient about this.
+ */
+ diff_setup(&diff_opts);
+ DIFF_OPT_SET(&diff_opts, RECURSIVE);
+ diff_opts.detect_rename = 0;
+ diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
+ paths[0] = origin->path;
+ paths[1] = NULL;
+
+ parse_pathspec(&diff_opts.pathspec,
+ PATHSPEC_ALL_MAGIC & ~PATHSPEC_LITERAL,
+ PATHSPEC_LITERAL_PATH, "", paths);
+ diff_setup_done(&diff_opts);
+
+ if (is_null_sha1(origin->commit->object.sha1))
+ do_diff_cache(parent->tree->object.sha1, &diff_opts);
+ else
+ diff_tree_sha1(parent->tree->object.sha1,
+ origin->commit->tree->object.sha1,
+ "", &diff_opts);
+ diffcore_std(&diff_opts);
+
+ if (!diff_queued_diff.nr) {
+ /* The path is the same as parent */
+ porigin = get_origin(sb, parent, origin->path);
+ hashcpy(porigin->blob_sha1, origin->blob_sha1);
+ porigin->mode = origin->mode;
+ } else {
+ /*
+ * Since origin->path is a pathspec, if the parent
+ * commit had it as a directory, we will see a whole
+ * bunch of deletion of files in the directory that we
+ * do not care about.
+ */
+ int i;
+ struct diff_filepair *p = NULL;
+ for (i = 0; i < diff_queued_diff.nr; i++) {
+ const char *name;
+ p = diff_queued_diff.queue[i];
+ name = p->one->path ? p->one->path : p->two->path;
+ if (!strcmp(name, origin->path))
+ break;
+ }
+ if (!p)
+ die("internal error in blame::find_origin");
+ switch (p->status) {
+ default:
+ die("internal error in blame::find_origin (%c)",
+ p->status);
+ case 'M':
+ porigin = get_origin(sb, parent, origin->path);
+ hashcpy(porigin->blob_sha1, p->one->sha1);
+ porigin->mode = p->one->mode;
+ break;
+ case 'A':
+ case 'T':
+ /* Did not exist in parent, or type changed */
+ break;
+ }
+ }
+ diff_flush(&diff_opts);
+ free_pathspec(&diff_opts.pathspec);
+ return porigin;
+}
+
+/*
+ * We have an origin -- find the path that corresponds to it in its
+ * parent and return an origin structure to represent it.
+ */
+static struct origin *find_rename(struct scoreboard *sb,
+ struct commit *parent,
+ struct origin *origin)
+{
+ struct origin *porigin = NULL;
+ struct diff_options diff_opts;
+ int i;
+
+ diff_setup(&diff_opts);
+ DIFF_OPT_SET(&diff_opts, RECURSIVE);
+ diff_opts.detect_rename = DIFF_DETECT_RENAME;
+ diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
+ diff_opts.single_follow = origin->path;
+ diff_setup_done(&diff_opts);
+
+ if (is_null_sha1(origin->commit->object.sha1))
+ do_diff_cache(parent->tree->object.sha1, &diff_opts);
+ else
+ diff_tree_sha1(parent->tree->object.sha1,
+ origin->commit->tree->object.sha1,
+ "", &diff_opts);
+ diffcore_std(&diff_opts);
+
+ for (i = 0; i < diff_queued_diff.nr; i++) {
+ struct diff_filepair *p = diff_queued_diff.queue[i];
+ if ((p->status == 'R' || p->status == 'C') &&
+ !strcmp(p->two->path, origin->path)) {
+ porigin = get_origin(sb, parent, p->one->path);
+ hashcpy(porigin->blob_sha1, p->one->sha1);
+ porigin->mode = p->one->mode;
+ break;
+ }
+ }
+ diff_flush(&diff_opts);
+ free_pathspec(&diff_opts.pathspec);
+ return porigin;
+}
+
+/*
+ * Append a new blame entry to a given output queue.
+ */
+static void add_blame_entry(struct blame_entry ***queue, struct blame_entry *e)
+{
+ origin_incref(e->suspect);
+
+ e->next = **queue;
+ **queue = e;
+ *queue = &e->next;
+}
+
+/*
+ * src typically is on-stack; we want to copy the information in it to
+ * a malloced blame_entry that gets added to the given queue. The
+ * origin of dst loses a refcnt.
+ */
+static void dup_entry(struct blame_entry ***queue,
+ struct blame_entry *dst, struct blame_entry *src)
+{
+ origin_incref(src->suspect);
+ origin_decref(dst->suspect);
+ memcpy(dst, src, sizeof(*src));
+ dst->next = **queue;
+ **queue = dst;
+ *queue = &dst->next;
+}
+
+static const char *nth_line(struct scoreboard *sb, long lno)
+{
+ return sb->final_buf + sb->lineno[lno];
+}
+
+static const char *nth_line_cb(void *data, long lno)
+{
+ return nth_line((struct scoreboard *)data, lno);
+}
+
+/*
+ * It is known that lines between tlno to same came from parent, and e
+ * has an overlap with that range. it also is known that parent's
+ * line plno corresponds to e's line tlno.
+ *
+ * <---- e ----->
+ * <------>
+ * <------------>
+ * <------------>
+ * <------------------>
+ *
+ * Split e into potentially three parts; before this chunk, the chunk
+ * to be blamed for the parent, and after that portion.
+ */
+static void split_overlap(struct blame_entry *split,
+ struct blame_entry *e,
+ int tlno, int plno, int same,
+ struct origin *parent)
+{
+ int chunk_end_lno;
+ memset(split, 0, sizeof(struct blame_entry [3]));
+
+ if (e->s_lno < tlno) {
+ /* there is a pre-chunk part not blamed on parent */
+ split[0].suspect = origin_incref(e->suspect);
+ split[0].lno = e->lno;
+ split[0].s_lno = e->s_lno;
+ split[0].num_lines = tlno - e->s_lno;
+ split[1].lno = e->lno + tlno - e->s_lno;
+ split[1].s_lno = plno;
+ }
+ else {
+ split[1].lno = e->lno;
+ split[1].s_lno = plno + (e->s_lno - tlno);
+ }
+
+ if (same < e->s_lno + e->num_lines) {
+ /* there is a post-chunk part not blamed on parent */
+ split[2].suspect = origin_incref(e->suspect);
+ split[2].lno = e->lno + (same - e->s_lno);
+ split[2].s_lno = e->s_lno + (same - e->s_lno);
+ split[2].num_lines = e->s_lno + e->num_lines - same;
+ chunk_end_lno = split[2].lno;
+ }
+ else
+ chunk_end_lno = e->lno + e->num_lines;
+ split[1].num_lines = chunk_end_lno - split[1].lno;
+
+ /*
+ * if it turns out there is nothing to blame the parent for,
+ * forget about the splitting. !split[1].suspect signals this.
+ */
+ if (split[1].num_lines < 1)
+ return;
+ split[1].suspect = origin_incref(parent);
+}
+
+/*
+ * split_overlap() divided an existing blame e into up to three parts
+ * in split. Any assigned blame is moved to queue to
+ * reflect the split.
+ */
+static void split_blame(struct blame_entry ***blamed,
+ struct blame_entry ***unblamed,
+ struct blame_entry *split,
+ struct blame_entry *e)
+{
+ struct blame_entry *new_entry;
+
+ if (split[0].suspect && split[2].suspect) {
+ /* The first part (reuse storage for the existing entry e) */
+ dup_entry(unblamed, e, &split[0]);
+
+ /* The last part -- me */
+ new_entry = xmalloc(sizeof(*new_entry));
+ memcpy(new_entry, &(split[2]), sizeof(struct blame_entry));
+ add_blame_entry(unblamed, new_entry);
+
+ /* ... and the middle part -- parent */
+ new_entry = xmalloc(sizeof(*new_entry));
+ memcpy(new_entry, &(split[1]), sizeof(struct blame_entry));
+ add_blame_entry(blamed, new_entry);
+ }
+ else if (!split[0].suspect && !split[2].suspect)
+ /*
+ * The parent covers the entire area; reuse storage for
+ * e and replace it with the parent.
+ */
+ dup_entry(blamed, e, &split[1]);
+ else if (split[0].suspect) {
+ /* me and then parent */
+ dup_entry(unblamed, e, &split[0]);
+
+ new_entry = xmalloc(sizeof(*new_entry));
+ memcpy(new_entry, &(split[1]), sizeof(struct blame_entry));
+ add_blame_entry(blamed, new_entry);
+ }
+ else {
+ /* parent and then me */
+ dup_entry(blamed, e, &split[1]);
+
+ new_entry = xmalloc(sizeof(*new_entry));
+ memcpy(new_entry, &(split[2]), sizeof(struct blame_entry));
+ add_blame_entry(unblamed, new_entry);
+ }
+}
+
+/*
+ * After splitting the blame, the origins used by the
+ * on-stack blame_entry should lose one refcnt each.
+ */
+static void decref_split(struct blame_entry *split)
+{
+ int i;
+
+ for (i = 0; i < 3; i++)
+ origin_decref(split[i].suspect);
+}
+
+/*
+ * reverse_blame reverses the list given in head, appending tail.
+ * That allows us to build lists in reverse order, then reverse them
+ * afterwards. This can be faster than building the list in proper
+ * order right away. The reason is that building in proper order
+ * requires writing a link in the _previous_ element, while building
+ * in reverse order just requires placing the list head into the
+ * _current_ element.
+ */
+
+static struct blame_entry *reverse_blame(struct blame_entry *head,
+ struct blame_entry *tail)
+{
+ while (head) {
+ struct blame_entry *next = head->next;
+ head->next = tail;
+ tail = head;
+ head = next;
+ }
+ return tail;
+}
+
+/*
+ * Process one hunk from the patch between the current suspect for
+ * blame_entry e and its parent. This first blames any unfinished
+ * entries before the chunk (which is where target and parent start
+ * differing) on the parent, and then splits blame entries at the
+ * start and at the end of the difference region. Since use of -M and
+ * -C options may lead to overlapping/duplicate source line number
+ * ranges, all we can rely on from sorting/merging is the order of the
+ * first suspect line number.
+ */
+static void blame_chunk(struct blame_entry ***dstq, struct blame_entry ***srcq,
+ int tlno, int offset, int same,
+ struct origin *parent)
+{
+ struct blame_entry *e = **srcq;
+ struct blame_entry *samep = NULL, *diffp = NULL;
+
+ while (e && e->s_lno < tlno) {
+ struct blame_entry *next = e->next;
+ /*
+ * current record starts before differing portion. If
+ * it reaches into it, we need to split it up and
+ * examine the second part separately.
+ */
+ if (e->s_lno + e->num_lines > tlno) {
+ /* Move second half to a new record */
+ int len = tlno - e->s_lno;
+ struct blame_entry *n = xcalloc(1, sizeof (struct blame_entry));
+ n->suspect = e->suspect;
+ n->lno = e->lno + len;
+ n->s_lno = e->s_lno + len;
+ n->num_lines = e->num_lines - len;
+ e->num_lines = len;
+ e->score = 0;
+ /* Push new record to diffp */
+ n->next = diffp;
+ diffp = n;
+ } else
+ origin_decref(e->suspect);
+ /* Pass blame for everything before the differing
+ * chunk to the parent */
+ e->suspect = origin_incref(parent);
+ e->s_lno += offset;
+ e->next = samep;
+ samep = e;
+ e = next;
+ }
+ /*
+ * As we don't know how much of a common stretch after this
+ * diff will occur, the currently blamed parts are all that we
+ * can assign to the parent for now.
+ */
+
+ if (samep) {
+ **dstq = reverse_blame(samep, **dstq);
+ *dstq = &samep->next;
+ }
+ /*
+ * Prepend the split off portions: everything after e starts
+ * after the blameable portion.
+ */
+ e = reverse_blame(diffp, e);
+
+ /*
+ * Now retain records on the target while parts are different
+ * from the parent.
+ */
+ samep = NULL;
+ diffp = NULL;
+ while (e && e->s_lno < same) {
+ struct blame_entry *next = e->next;
+
+ /*
+ * If current record extends into sameness, need to split.
+ */
+ if (e->s_lno + e->num_lines > same) {
+ /*
+ * Move second half to a new record to be
+ * processed by later chunks
+ */
+ int len = same - e->s_lno;
+ struct blame_entry *n = xcalloc(1, sizeof (struct blame_entry));
+ n->suspect = origin_incref(e->suspect);
+ n->lno = e->lno + len;
+ n->s_lno = e->s_lno + len;
+ n->num_lines = e->num_lines - len;
+ e->num_lines = len;
+ e->score = 0;
+ /* Push new record to samep */
+ n->next = samep;
+ samep = n;
+ }
+ e->next = diffp;
+ diffp = e;
+ e = next;
+ }
+ **srcq = reverse_blame(diffp, reverse_blame(samep, e));
+ /* Move across elements that are in the unblamable portion */
+ if (diffp)
+ *srcq = &diffp->next;
+}
+
+struct blame_chunk_cb_data {
+ struct origin *parent;
+ long offset;
+ struct blame_entry **dstq;
+ struct blame_entry **srcq;
+};
+
+/* diff chunks are from parent to target */
+static int blame_chunk_cb(long start_a, long count_a,
+ long start_b, long count_b, void *data)
+{
+ struct blame_chunk_cb_data *d = data;
+ if (start_a - start_b != d->offset)
+ die("internal error in blame::blame_chunk_cb");
+ blame_chunk(&d->dstq, &d->srcq, start_b, start_a - start_b,
+ start_b + count_b, d->parent);
+ d->offset = start_a + count_a - (start_b + count_b);
+ return 0;
+}
+
+/*
+ * We are looking at the origin 'target' and aiming to pass blame
+ * for the lines it is suspected to its parent. Run diff to find
+ * which lines came from parent and pass blame for them.
+ */
+static void pass_blame_to_parent(struct scoreboard *sb,
+ struct origin *target,
+ struct origin *parent)
+{
+ mmfile_t file_p, file_o;
+ struct blame_chunk_cb_data d;
+ struct blame_entry *newdest = NULL;
+
+ if (!target->suspects)
+ return; /* nothing remains for this target */
+
+ d.parent = parent;
+ d.offset = 0;
+ d.dstq = &newdest; d.srcq = &target->suspects;
+
+ fill_origin_blob(&sb->revs->diffopt, parent, &file_p);
+ fill_origin_blob(&sb->revs->diffopt, target, &file_o);
+ num_get_patch++;
+
+ diff_hunks(&file_p, &file_o, 0, blame_chunk_cb, &d);
+ /* The rest are the same as the parent */
+ blame_chunk(&d.dstq, &d.srcq, INT_MAX, d.offset, INT_MAX, parent);
+ *d.dstq = NULL;
+ queue_blames(sb, parent, newdest);
+
+ return;
+}
+
+/*
+ * The lines in blame_entry after splitting blames many times can become
+ * very small and trivial, and at some point it becomes pointless to
+ * blame the parents. E.g. "\t\t}\n\t}\n\n" appears everywhere in any
+ * ordinary C program, and it is not worth to say it was copied from
+ * totally unrelated file in the parent.
+ *
+ * Compute how trivial the lines in the blame_entry are.
+ */
+static unsigned ent_score(struct scoreboard *sb, struct blame_entry *e)
+{
+ unsigned score;
+ const char *cp, *ep;
+
+ if (e->score)
+ return e->score;
+
+ score = 1;
+ cp = nth_line(sb, e->lno);
+ ep = nth_line(sb, e->lno + e->num_lines);
+ while (cp < ep) {
+ unsigned ch = *((unsigned char *)cp);
+ if (isalnum(ch))
+ score++;
+ cp++;
+ }
+ e->score = score;
+ return score;
+}
+
+/*
+ * best_so_far[] and this[] are both a split of an existing blame_entry
+ * that passes blame to the parent. Maintain best_so_far the best split
+ * so far, by comparing this and best_so_far and copying this into
+ * bst_so_far as needed.
+ */
+static void copy_split_if_better(struct scoreboard *sb,
+ struct blame_entry *best_so_far,
+ struct blame_entry *this)
+{
+ int i;
+
+ if (!this[1].suspect)
+ return;
+ if (best_so_far[1].suspect) {
+ if (ent_score(sb, &this[1]) < ent_score(sb, &best_so_far[1]))
+ return;
+ }
+
+ for (i = 0; i < 3; i++)
+ origin_incref(this[i].suspect);
+ decref_split(best_so_far);
+ memcpy(best_so_far, this, sizeof(struct blame_entry [3]));
+}
+
+/*
+ * We are looking at a part of the final image represented by
+ * ent (tlno and same are offset by ent->s_lno).
+ * tlno is where we are looking at in the final image.
+ * up to (but not including) same match preimage.
+ * plno is where we are looking at in the preimage.
+ *
+ * <-------------- final image ---------------------->
+ * <------ent------>
+ * ^tlno ^same
+ * <---------preimage----->
+ * ^plno
+ *
+ * All line numbers are 0-based.
+ */
+static void handle_split(struct scoreboard *sb,
+ struct blame_entry *ent,
+ int tlno, int plno, int same,
+ struct origin *parent,
+ struct blame_entry *split)
+{
+ if (ent->num_lines <= tlno)
+ return;
+ if (tlno < same) {
+ struct blame_entry this[3];
+ tlno += ent->s_lno;
+ same += ent->s_lno;
+ split_overlap(this, ent, tlno, plno, same, parent);
+ copy_split_if_better(sb, split, this);
+ decref_split(this);
+ }
+}
+
+struct handle_split_cb_data {
+ struct scoreboard *sb;
+ struct blame_entry *ent;
+ struct origin *parent;
+ struct blame_entry *split;
+ long plno;
+ long tlno;
+};
+
+static int handle_split_cb(long start_a, long count_a,
+ long start_b, long count_b, void *data)
+{
+ struct handle_split_cb_data *d = data;
+ handle_split(d->sb, d->ent, d->tlno, d->plno, start_b, d->parent,
+ d->split);
+ d->plno = start_a + count_a;
+ d->tlno = start_b + count_b;
+ return 0;
+}
+
+/*
+ * Find the lines from parent that are the same as ent so that
+ * we can pass blames to it. file_p has the blob contents for
+ * the parent.
+ */
+static void find_copy_in_blob(struct scoreboard *sb,
+ struct blame_entry *ent,
+ struct origin *parent,
+ struct blame_entry *split,
+ mmfile_t *file_p)
+{
+ const char *cp;
+ mmfile_t file_o;
+ struct handle_split_cb_data d;
+
+ memset(&d, 0, sizeof(d));
+ d.sb = sb; d.ent = ent; d.parent = parent; d.split = split;
+ /*
+ * Prepare mmfile that contains only the lines in ent.
+ */
+ cp = nth_line(sb, ent->lno);
+ file_o.ptr = (char *) cp;
+ file_o.size = nth_line(sb, ent->lno + ent->num_lines) - cp;
+
+ /*
+ * file_o is a part of final image we are annotating.
+ * file_p partially may match that image.
+ */
+ memset(split, 0, sizeof(struct blame_entry [3]));
+ diff_hunks(file_p, &file_o, 1, handle_split_cb, &d);
+ /* remainder, if any, all match the preimage */
+ handle_split(sb, ent, d.tlno, d.plno, ent->num_lines, parent, split);
+}
+
+/* Move all blame entries from list *source that have a score smaller
+ * than score_min to the front of list *small.
+ * Returns a pointer to the link pointing to the old head of the small list.
+ */
+
+static struct blame_entry **filter_small(struct scoreboard *sb,
+ struct blame_entry **small,
+ struct blame_entry **source,
+ unsigned score_min)
+{
+ struct blame_entry *p = *source;
+ struct blame_entry *oldsmall = *small;
+ while (p) {
+ if (ent_score(sb, p) <= score_min) {
+ *small = p;
+ small = &p->next;
+ p = *small;
+ } else {
+ *source = p;
+ source = &p->next;
+ p = *source;
+ }
+ }
+ *small = oldsmall;
+ *source = NULL;
+ return small;
+}
+
+/*
+ * See if lines currently target is suspected for can be attributed to
+ * parent.
+ */
+static void find_move_in_parent(struct scoreboard *sb,
+ struct blame_entry ***blamed,
+ struct blame_entry **toosmall,
+ struct origin *target,
+ struct origin *parent)
+{
+ struct blame_entry *e, split[3];
+ struct blame_entry *unblamed = target->suspects;
+ struct blame_entry *leftover = NULL;
+ mmfile_t file_p;
+
+ if (!unblamed)
+ return; /* nothing remains for this target */
+
+ fill_origin_blob(&sb->revs->diffopt, parent, &file_p);
+ if (!file_p.ptr)
+ return;
+
+ /* At each iteration, unblamed has a NULL-terminated list of
+ * entries that have not yet been tested for blame. leftover
+ * contains the reversed list of entries that have been tested
+ * without being assignable to the parent.
+ */
+ do {
+ struct blame_entry **unblamedtail = &unblamed;
+ struct blame_entry *next;
+ for (e = unblamed; e; e = next) {
+ next = e->next;
+ find_copy_in_blob(sb, e, parent, split, &file_p);
+ if (split[1].suspect &&
+ blame_move_score < ent_score(sb, &split[1])) {
+ split_blame(blamed, &unblamedtail, split, e);
+ } else {
+ e->next = leftover;
+ leftover = e;
+ }
+ decref_split(split);
+ }
+ *unblamedtail = NULL;
+ toosmall = filter_small(sb, toosmall, &unblamed, blame_move_score);
+ } while (unblamed);
+ target->suspects = reverse_blame(leftover, NULL);
+}
+
+struct blame_list {
+ struct blame_entry *ent;
+ struct blame_entry split[3];
+};
+
+/*
+ * Count the number of entries the target is suspected for,
+ * and prepare a list of entry and the best split.
+ */
+static struct blame_list *setup_blame_list(struct blame_entry *unblamed,
+ int *num_ents_p)
+{
+ struct blame_entry *e;
+ int num_ents, i;
+ struct blame_list *blame_list = NULL;
+
+ for (e = unblamed, num_ents = 0; e; e = e->next)
+ num_ents++;
+ if (num_ents) {
+ blame_list = xcalloc(num_ents, sizeof(struct blame_list));
+ for (e = unblamed, i = 0; e; e = e->next)
+ blame_list[i++].ent = e;
+ }
+ *num_ents_p = num_ents;
+ return blame_list;
+}
+
+/*
+ * For lines target is suspected for, see if we can find code movement
+ * across file boundary from the parent commit. porigin is the path
+ * in the parent we already tried.
+ */
+static void find_copy_in_parent(struct scoreboard *sb,
+ struct blame_entry ***blamed,
+ struct blame_entry **toosmall,
+ struct origin *target,
+ struct commit *parent,
+ struct origin *porigin,
+ int opt)
+{
+ struct diff_options diff_opts;
+ int i, j;
+ struct blame_list *blame_list;
+ int num_ents;
+ struct blame_entry *unblamed = target->suspects;
+ struct blame_entry *leftover = NULL;
+
+ if (!unblamed)
+ return; /* nothing remains for this target */
+
+ diff_setup(&diff_opts);
+ DIFF_OPT_SET(&diff_opts, RECURSIVE);
+ diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
+
+ diff_setup_done(&diff_opts);
+
+ /* Try "find copies harder" on new path if requested;
+ * we do not want to use diffcore_rename() actually to
+ * match things up; find_copies_harder is set only to
+ * force diff_tree_sha1() to feed all filepairs to diff_queue,
+ * and this code needs to be after diff_setup_done(), which
+ * usually makes find-copies-harder imply copy detection.
+ */
+ if ((opt & PICKAXE_BLAME_COPY_HARDEST)
+ || ((opt & PICKAXE_BLAME_COPY_HARDER)
+ && (!porigin || strcmp(target->path, porigin->path))))
+ DIFF_OPT_SET(&diff_opts, FIND_COPIES_HARDER);
+
+ if (is_null_sha1(target->commit->object.sha1))
+ do_diff_cache(parent->tree->object.sha1, &diff_opts);
+ else
+ diff_tree_sha1(parent->tree->object.sha1,
+ target->commit->tree->object.sha1,
+ "", &diff_opts);
+
+ if (!DIFF_OPT_TST(&diff_opts, FIND_COPIES_HARDER))
+ diffcore_std(&diff_opts);
+
+ do {
+ struct blame_entry **unblamedtail = &unblamed;
+ blame_list = setup_blame_list(unblamed, &num_ents);
+
+ for (i = 0; i < diff_queued_diff.nr; i++) {
+ struct diff_filepair *p = diff_queued_diff.queue[i];
+ struct origin *norigin;
+ mmfile_t file_p;
+ struct blame_entry this[3];
+
+ if (!DIFF_FILE_VALID(p->one))
+ continue; /* does not exist in parent */
+ if (S_ISGITLINK(p->one->mode))
+ continue; /* ignore git links */
+ if (porigin && !strcmp(p->one->path, porigin->path))
+ /* find_move already dealt with this path */
+ continue;
+
+ norigin = get_origin(sb, parent, p->one->path);
+ hashcpy(norigin->blob_sha1, p->one->sha1);
+ norigin->mode = p->one->mode;
+ fill_origin_blob(&sb->revs->diffopt, norigin, &file_p);
+ if (!file_p.ptr)
+ continue;
+
+ for (j = 0; j < num_ents; j++) {
+ find_copy_in_blob(sb, blame_list[j].ent,
+ norigin, this, &file_p);
+ copy_split_if_better(sb, blame_list[j].split,
+ this);
+ decref_split(this);
+ }
+ origin_decref(norigin);
+ }
+
+ for (j = 0; j < num_ents; j++) {
+ struct blame_entry *split = blame_list[j].split;
+ if (split[1].suspect &&
+ blame_copy_score < ent_score(sb, &split[1])) {
+ split_blame(blamed, &unblamedtail, split,
+ blame_list[j].ent);
+ } else {
+ blame_list[j].ent->next = leftover;
+ leftover = blame_list[j].ent;
+ }
+ decref_split(split);
+ }
+ free(blame_list);
+ *unblamedtail = NULL;
+ toosmall = filter_small(sb, toosmall, &unblamed, blame_copy_score);
+ } while (unblamed);
+ target->suspects = reverse_blame(leftover, NULL);
+ diff_flush(&diff_opts);
+ free_pathspec(&diff_opts.pathspec);
+}
+
+/*
+ * The blobs of origin and porigin exactly match, so everything
+ * origin is suspected for can be blamed on the parent.
+ */
+static void pass_whole_blame(struct scoreboard *sb,
+ struct origin *origin, struct origin *porigin)
+{
+ struct blame_entry *e, *suspects;
+
+ if (!porigin->file.ptr && origin->file.ptr) {
+ /* Steal its file */
+ porigin->file = origin->file;
+ origin->file.ptr = NULL;
+ }
+ suspects = origin->suspects;
+ origin->suspects = NULL;
+ for (e = suspects; e; e = e->next) {
+ origin_incref(porigin);
+ origin_decref(e->suspect);
+ e->suspect = porigin;
+ }
+ queue_blames(sb, porigin, suspects);
+}
+
+/*
+ * We pass blame from the current commit to its parents. We keep saying
+ * "parent" (and "porigin"), but what we mean is to find scapegoat to
+ * exonerate ourselves.
+ */
+static struct commit_list *first_scapegoat(struct rev_info *revs, struct commit *commit)
+{
+ if (!reverse)
+ return commit->parents;
+ return lookup_decoration(&revs->children, &commit->object);
+}
+
+static int num_scapegoats(struct rev_info *revs, struct commit *commit)
+{
+ struct commit_list *l = first_scapegoat(revs, commit);
+ return commit_list_count(l);
+}
+
+/* Distribute collected unsorted blames to the respected sorted lists
+ * in the various origins.
+ */
+static void distribute_blame(struct scoreboard *sb, struct blame_entry *blamed)
+{
+ blamed = blame_sort(blamed, compare_blame_suspect);
+ while (blamed)
+ {
+ struct origin *porigin = blamed->suspect;
+ struct blame_entry *suspects = NULL;
+ do {
+ struct blame_entry *next = blamed->next;
+ blamed->next = suspects;
+ suspects = blamed;
+ blamed = next;
+ } while (blamed && blamed->suspect == porigin);
+ suspects = reverse_blame(suspects, NULL);
+ queue_blames(sb, porigin, suspects);
+ }
+}
+
+#define MAXSG 16
+
+static void pass_blame(struct scoreboard *sb, struct origin *origin, int opt)
+{
+ struct rev_info *revs = sb->revs;
+ int i, pass, num_sg;
+ struct commit *commit = origin->commit;
+ struct commit_list *sg;
+ struct origin *sg_buf[MAXSG];
+ struct origin *porigin, **sg_origin = sg_buf;
+ struct blame_entry *toosmall = NULL;
+ struct blame_entry *blames, **blametail = &blames;
+
+ num_sg = num_scapegoats(revs, commit);
+ if (!num_sg)
+ goto finish;
+ else if (num_sg < ARRAY_SIZE(sg_buf))
+ memset(sg_buf, 0, sizeof(sg_buf));
+ else
+ sg_origin = xcalloc(num_sg, sizeof(*sg_origin));
+
+ /*
+ * The first pass looks for unrenamed path to optimize for
+ * common cases, then we look for renames in the second pass.
+ */
+ for (pass = 0; pass < 2 - no_whole_file_rename; pass++) {
+ struct origin *(*find)(struct scoreboard *,
+ struct commit *, struct origin *);
+ find = pass ? find_rename : find_origin;
+
+ for (i = 0, sg = first_scapegoat(revs, commit);
+ i < num_sg && sg;
+ sg = sg->next, i++) {
+ struct commit *p = sg->item;
+ int j, same;
+
+ if (sg_origin[i])
+ continue;
+ if (parse_commit(p))
+ continue;
+ porigin = find(sb, p, origin);
+ if (!porigin)
+ continue;
+ if (!hashcmp(porigin->blob_sha1, origin->blob_sha1)) {
+ pass_whole_blame(sb, origin, porigin);
+ origin_decref(porigin);
+ goto finish;
+ }
+ for (j = same = 0; j < i; j++)
+ if (sg_origin[j] &&
+ !hashcmp(sg_origin[j]->blob_sha1,
+ porigin->blob_sha1)) {
+ same = 1;
+ break;
+ }
+ if (!same)
+ sg_origin[i] = porigin;
+ else
+ origin_decref(porigin);
+ }
+ }
+
+ num_commits++;
+ for (i = 0, sg = first_scapegoat(revs, commit);
+ i < num_sg && sg;
+ sg = sg->next, i++) {
+ struct origin *porigin = sg_origin[i];
+ if (!porigin)
+ continue;
+ if (!origin->previous) {
+ origin_incref(porigin);
+ origin->previous = porigin;
+ }
+ pass_blame_to_parent(sb, origin, porigin);
+ if (!origin->suspects)
+ goto finish;
+ }
+
+ /*
+ * Optionally find moves in parents' files.
+ */
+ if (opt & PICKAXE_BLAME_MOVE) {
+ filter_small(sb, &toosmall, &origin->suspects, blame_move_score);
+ if (origin->suspects) {
+ for (i = 0, sg = first_scapegoat(revs, commit);
+ i < num_sg && sg;
+ sg = sg->next, i++) {
+ struct origin *porigin = sg_origin[i];
+ if (!porigin)
+ continue;
+ find_move_in_parent(sb, &blametail, &toosmall, origin, porigin);
+ if (!origin->suspects)
+ break;
+ }
+ }
+ }
+
+ /*
+ * Optionally find copies from parents' files.
+ */
+ if (opt & PICKAXE_BLAME_COPY) {
+ if (blame_copy_score > blame_move_score)
+ filter_small(sb, &toosmall, &origin->suspects, blame_copy_score);
+ else if (blame_copy_score < blame_move_score) {
+ origin->suspects = blame_merge(origin->suspects, toosmall);
+ toosmall = NULL;
+ filter_small(sb, &toosmall, &origin->suspects, blame_copy_score);
+ }
+ if (!origin->suspects)
+ goto finish;
+
+ for (i = 0, sg = first_scapegoat(revs, commit);
+ i < num_sg && sg;
+ sg = sg->next, i++) {
+ struct origin *porigin = sg_origin[i];
+ find_copy_in_parent(sb, &blametail, &toosmall,
+ origin, sg->item, porigin, opt);
+ if (!origin->suspects)
+ goto finish;
+ }
+ }
+
+finish:
+ *blametail = NULL;
+ distribute_blame(sb, blames);
+ /*
+ * prepend toosmall to origin->suspects
+ *
+ * There is no point in sorting: this ends up on a big
+ * unsorted list in the caller anyway.
+ */
+ if (toosmall) {
+ struct blame_entry **tail = &toosmall;
+ while (*tail)
+ tail = &(*tail)->next;
+ *tail = origin->suspects;
+ origin->suspects = toosmall;
+ }
+ for (i = 0; i < num_sg; i++) {
+ if (sg_origin[i]) {
+ drop_origin_blob(sg_origin[i]);
+ origin_decref(sg_origin[i]);
+ }
+ }
+ drop_origin_blob(origin);
+ if (sg_buf != sg_origin)
+ free(sg_origin);
+}
+
+/*
+ * Information on commits, used for output.
+ */
+struct commit_info {
+ struct strbuf author;
+ struct strbuf author_mail;
+ unsigned long author_time;
+ struct strbuf author_tz;
+
+ /* filled only when asked for details */
+ struct strbuf committer;
+ struct strbuf committer_mail;
+ unsigned long committer_time;
+ struct strbuf committer_tz;
+
+ struct strbuf summary;
+};
+
+/*
+ * Parse author/committer line in the commit object buffer
+ */
+static void get_ac_line(const char *inbuf, const char *what,
+ struct strbuf *name, struct strbuf *mail,
+ unsigned long *time, struct strbuf *tz)
+{
+ struct ident_split ident;
+ size_t len, maillen, namelen;
+ char *tmp, *endp;
+ const char *namebuf, *mailbuf;
+
+ tmp = strstr(inbuf, what);
+ if (!tmp)
+ goto error_out;
+ tmp += strlen(what);
+ endp = strchr(tmp, '\n');
+ if (!endp)
+ len = strlen(tmp);
+ else
+ len = endp - tmp;
+
+ if (split_ident_line(&ident, tmp, len)) {
+ error_out:
+ /* Ugh */
+ tmp = "(unknown)";
+ strbuf_addstr(name, tmp);
+ strbuf_addstr(mail, tmp);
+ strbuf_addstr(tz, tmp);
+ *time = 0;
+ return;
+ }
+
+ namelen = ident.name_end - ident.name_begin;
+ namebuf = ident.name_begin;
+
+ maillen = ident.mail_end - ident.mail_begin;
+ mailbuf = ident.mail_begin;
+
+ if (ident.date_begin && ident.date_end)
+ *time = strtoul(ident.date_begin, NULL, 10);
+ else
+ *time = 0;
+
+ if (ident.tz_begin && ident.tz_end)
+ strbuf_add(tz, ident.tz_begin, ident.tz_end - ident.tz_begin);
+ else
+ strbuf_addstr(tz, "(unknown)");
+
+ /*
+ * Now, convert both name and e-mail using mailmap
+ */
+ map_user(&mailmap, &mailbuf, &maillen,
+ &namebuf, &namelen);
+
+ strbuf_addf(mail, "<%.*s>", (int)maillen, mailbuf);
+ strbuf_add(name, namebuf, namelen);
+}
+
+static void commit_info_init(struct commit_info *ci)
+{
+
+ strbuf_init(&ci->author, 0);
+ strbuf_init(&ci->author_mail, 0);
+ strbuf_init(&ci->author_tz, 0);
+ strbuf_init(&ci->committer, 0);
+ strbuf_init(&ci->committer_mail, 0);
+ strbuf_init(&ci->committer_tz, 0);
+ strbuf_init(&ci->summary, 0);
+}
+
+static void commit_info_destroy(struct commit_info *ci)
+{
+
+ strbuf_release(&ci->author);
+ strbuf_release(&ci->author_mail);
+ strbuf_release(&ci->author_tz);
+ strbuf_release(&ci->committer);
+ strbuf_release(&ci->committer_mail);
+ strbuf_release(&ci->committer_tz);
+ strbuf_release(&ci->summary);
+}
+
+static void get_commit_info(struct commit *commit,
+ struct commit_info *ret,
+ int detailed)
+{
+ int len;
+ const char *subject, *encoding;
+ const char *message;
+
+ commit_info_init(ret);
+
+ encoding = get_log_output_encoding();
+ message = logmsg_reencode(commit, NULL, encoding);
+ get_ac_line(message, "\nauthor ",
+ &ret->author, &ret->author_mail,
+ &ret->author_time, &ret->author_tz);
+
+ if (!detailed) {
+ unuse_commit_buffer(commit, message);
+ return;
+ }
+
+ get_ac_line(message, "\ncommitter ",
+ &ret->committer, &ret->committer_mail,
+ &ret->committer_time, &ret->committer_tz);
+
+ len = find_commit_subject(message, &subject);
+ if (len)
+ strbuf_add(&ret->summary, subject, len);
+ else
+ strbuf_addf(&ret->summary, "(%s)", sha1_to_hex(commit->object.sha1));
+
+ unuse_commit_buffer(commit, message);
+}
+
+/*
+ * To allow LF and other nonportable characters in pathnames,
+ * they are c-style quoted as needed.
+ */
+static void write_filename_info(const char *path)
+{
+ printf("filename ");
+ write_name_quoted(path, stdout, '\n');
+}
+
+/*
+ * Porcelain/Incremental format wants to show a lot of details per
+ * commit. Instead of repeating this every line, emit it only once,
+ * the first time each commit appears in the output (unless the
+ * user has specifically asked for us to repeat).
+ */
+static int emit_one_suspect_detail(struct origin *suspect, int repeat)
+{
+ struct commit_info ci;
+
+ if (!repeat && (suspect->commit->object.flags & METAINFO_SHOWN))
+ return 0;
+
+ suspect->commit->object.flags |= METAINFO_SHOWN;
+ get_commit_info(suspect->commit, &ci, 1);
+ printf("author %s\n", ci.author.buf);
+ printf("author-mail %s\n", ci.author_mail.buf);
+ printf("author-time %lu\n", ci.author_time);
+ printf("author-tz %s\n", ci.author_tz.buf);
+ printf("committer %s\n", ci.committer.buf);
+ printf("committer-mail %s\n", ci.committer_mail.buf);
+ printf("committer-time %lu\n", ci.committer_time);
+ printf("committer-tz %s\n", ci.committer_tz.buf);
+ printf("summary %s\n", ci.summary.buf);
+ if (suspect->commit->object.flags & UNINTERESTING)
+ printf("boundary\n");
+ if (suspect->previous) {
+ struct origin *prev = suspect->previous;
+ printf("previous %s ", sha1_to_hex(prev->commit->object.sha1));
+ write_name_quoted(prev->path, stdout, '\n');
+ }
+
+ commit_info_destroy(&ci);
+
+ return 1;
+}
+
+/*
+ * The blame_entry is found to be guilty for the range.
+ * Show it in incremental output.
+ */
+static void found_guilty_entry(struct blame_entry *ent)
+{
+ if (incremental) {
+ struct origin *suspect = ent->suspect;
+
+ printf("%s %d %d %d\n",
+ sha1_to_hex(suspect->commit->object.sha1),
+ ent->s_lno + 1, ent->lno + 1, ent->num_lines);
+ emit_one_suspect_detail(suspect, 0);
+ write_filename_info(suspect->path);
+ maybe_flush_or_die(stdout, "stdout");
+ }
+}
+
+/*
+ * The main loop -- while we have blobs with lines whose true origin
+ * is still unknown, pick one blob, and allow its lines to pass blames
+ * to its parents. */
+static void assign_blame(struct scoreboard *sb, int opt)
+{
+ struct rev_info *revs = sb->revs;
+ struct commit *commit = prio_queue_get(&sb->commits);
+
+ while (commit) {
+ struct blame_entry *ent;
+ struct origin *suspect = commit->util;
+
+ /* find one suspect to break down */
+ while (suspect && !suspect->suspects)
+ suspect = suspect->next;
+
+ if (!suspect) {
+ commit = prio_queue_get(&sb->commits);
+ continue;
+ }
+
+ assert(commit == suspect->commit);
+
+ /*
+ * We will use this suspect later in the loop,
+ * so hold onto it in the meantime.
+ */
+ origin_incref(suspect);
+ parse_commit(commit);
+ if (reverse ||
+ (!(commit->object.flags & UNINTERESTING) &&
+ !(revs->max_age != -1 && commit->date < revs->max_age)))
+ pass_blame(sb, suspect, opt);
+ else {
+ commit->object.flags |= UNINTERESTING;
+ if (commit->object.parsed)
+ mark_parents_uninteresting(commit);
+ }
+ /* treat root commit as boundary */
+ if (!commit->parents && !show_root)
+ commit->object.flags |= UNINTERESTING;
+
+ /* Take responsibility for the remaining entries */
+ ent = suspect->suspects;
+ if (ent) {
+ suspect->guilty = 1;
+ for (;;) {
+ struct blame_entry *next = ent->next;
+ found_guilty_entry(ent);
+ if (next) {
+ ent = next;
+ continue;
+ }
+ ent->next = sb->ent;
+ sb->ent = suspect->suspects;
+ suspect->suspects = NULL;
+ break;
+ }
+ }
+ origin_decref(suspect);
+
+ if (DEBUG) /* sanity */
+ sanity_check_refcnt(sb);
+ }
+}
+
+static const char *format_time(unsigned long time, const char *tz_str,
+ int show_raw_time)
+{
+ static struct strbuf time_buf = STRBUF_INIT;
+
+ strbuf_reset(&time_buf);
+ if (show_raw_time) {
+ strbuf_addf(&time_buf, "%lu %s", time, tz_str);
+ }
+ else {
+ const char *time_str;
+ size_t time_width;
+ int tz;
+ tz = atoi(tz_str);
+ time_str = show_date(time, tz, blame_date_mode);
+ strbuf_addstr(&time_buf, time_str);
+ /*
+ * Add space paddings to time_buf to display a fixed width
+ * string, and use time_width for display width calibration.
+ */
+ for (time_width = utf8_strwidth(time_str);
+ time_width < blame_date_width;
+ time_width++)
+ strbuf_addch(&time_buf, ' ');
+ }
+ return time_buf.buf;
+}
+
+#define OUTPUT_ANNOTATE_COMPAT 001
+#define OUTPUT_LONG_OBJECT_NAME 002
+#define OUTPUT_RAW_TIMESTAMP 004
+#define OUTPUT_PORCELAIN 010
+#define OUTPUT_SHOW_NAME 020
+#define OUTPUT_SHOW_NUMBER 040
+#define OUTPUT_SHOW_SCORE 0100
+#define OUTPUT_NO_AUTHOR 0200
+#define OUTPUT_SHOW_EMAIL 0400
+#define OUTPUT_LINE_PORCELAIN 01000
+
+static void emit_porcelain_details(struct origin *suspect, int repeat)
+{
+ if (emit_one_suspect_detail(suspect, repeat) ||
+ (suspect->commit->object.flags & MORE_THAN_ONE_PATH))
+ write_filename_info(suspect->path);
+}
+
+static void emit_porcelain(struct scoreboard *sb, struct blame_entry *ent,
+ int opt)
+{
+ int repeat = opt & OUTPUT_LINE_PORCELAIN;
+ int cnt;
+ const char *cp;
+ struct origin *suspect = ent->suspect;
+ char hex[41];
+
+ strcpy(hex, sha1_to_hex(suspect->commit->object.sha1));
+ printf("%s %d %d %d\n",
+ hex,
+ ent->s_lno + 1,
+ ent->lno + 1,
+ ent->num_lines);
+ emit_porcelain_details(suspect, repeat);
+
+ cp = nth_line(sb, ent->lno);
+ for (cnt = 0; cnt < ent->num_lines; cnt++) {
+ char ch;
+ if (cnt) {
+ printf("%s %d %d\n", hex,
+ ent->s_lno + 1 + cnt,
+ ent->lno + 1 + cnt);
+ if (repeat)
+ emit_porcelain_details(suspect, 1);
+ }
+ putchar('\t');
+ do {
+ ch = *cp++;
+ putchar(ch);
+ } while (ch != '\n' &&
+ cp < sb->final_buf + sb->final_buf_size);
+ }
+
+ if (sb->final_buf_size && cp[-1] != '\n')
+ putchar('\n');
+}
+
+static void emit_other(struct scoreboard *sb, struct blame_entry *ent, int opt)
+{
+ int cnt;
+ const char *cp;
+ struct origin *suspect = ent->suspect;
+ struct commit_info ci;
+ char hex[41];
+ int show_raw_time = !!(opt & OUTPUT_RAW_TIMESTAMP);
+
+ get_commit_info(suspect->commit, &ci, 1);
+ strcpy(hex, sha1_to_hex(suspect->commit->object.sha1));
+
+ cp = nth_line(sb, ent->lno);
+ for (cnt = 0; cnt < ent->num_lines; cnt++) {
+ char ch;
+ int length = (opt & OUTPUT_LONG_OBJECT_NAME) ? 40 : abbrev;
+
+ if (suspect->commit->object.flags & UNINTERESTING) {
+ if (blank_boundary)
+ memset(hex, ' ', length);
+ else if (!(opt & OUTPUT_ANNOTATE_COMPAT)) {
+ length--;
+ putchar('^');
+ }
+ }
+
+ printf("%.*s", length, hex);
+ if (opt & OUTPUT_ANNOTATE_COMPAT) {
+ const char *name;
+ if (opt & OUTPUT_SHOW_EMAIL)
+ name = ci.author_mail.buf;
+ else
+ name = ci.author.buf;
+ printf("\t(%10s\t%10s\t%d)", name,
+ format_time(ci.author_time, ci.author_tz.buf,
+ show_raw_time),
+ ent->lno + 1 + cnt);
+ } else {
+ if (opt & OUTPUT_SHOW_SCORE)
+ printf(" %*d %02d",
+ max_score_digits, ent->score,
+ ent->suspect->refcnt);
+ if (opt & OUTPUT_SHOW_NAME)
+ printf(" %-*.*s", longest_file, longest_file,
+ suspect->path);
+ if (opt & OUTPUT_SHOW_NUMBER)
+ printf(" %*d", max_orig_digits,
+ ent->s_lno + 1 + cnt);
+
+ if (!(opt & OUTPUT_NO_AUTHOR)) {
+ const char *name;
+ int pad;
+ if (opt & OUTPUT_SHOW_EMAIL)
+ name = ci.author_mail.buf;
+ else
+ name = ci.author.buf;
+ pad = longest_author - utf8_strwidth(name);
+ printf(" (%s%*s %10s",
+ name, pad, "",
+ format_time(ci.author_time,
+ ci.author_tz.buf,
+ show_raw_time));
+ }
+ printf(" %*d) ",
+ max_digits, ent->lno + 1 + cnt);
+ }
+ do {
+ ch = *cp++;
+ putchar(ch);
+ } while (ch != '\n' &&
+ cp < sb->final_buf + sb->final_buf_size);
+ }
+
+ if (sb->final_buf_size && cp[-1] != '\n')
+ putchar('\n');
+
+ commit_info_destroy(&ci);
+}
+
+static void output(struct scoreboard *sb, int option)
+{
+ struct blame_entry *ent;
+
+ if (option & OUTPUT_PORCELAIN) {
+ for (ent = sb->ent; ent; ent = ent->next) {
+ int count = 0;
+ struct origin *suspect;
+ struct commit *commit = ent->suspect->commit;
+ if (commit->object.flags & MORE_THAN_ONE_PATH)
+ continue;
+ for (suspect = commit->util; suspect; suspect = suspect->next) {
+ if (suspect->guilty && count++) {
+ commit->object.flags |= MORE_THAN_ONE_PATH;
+ break;
+ }
+ }
+ }
+ }
+
+ for (ent = sb->ent; ent; ent = ent->next) {
+ if (option & OUTPUT_PORCELAIN)
+ emit_porcelain(sb, ent, option);
+ else {
+ emit_other(sb, ent, option);
+ }
+ }
+}
+
+static const char *get_next_line(const char *start, const char *end)
+{
+ const char *nl = memchr(start, '\n', end - start);
+ return nl ? nl + 1 : end;
+}
+
+/*
+ * To allow quick access to the contents of nth line in the
+ * final image, prepare an index in the scoreboard.
+ */
+static int prepare_lines(struct scoreboard *sb)
+{
+ const char *buf = sb->final_buf;
+ unsigned long len = sb->final_buf_size;
+ const char *end = buf + len;
+ const char *p;
+ int *lineno;
+ int num = 0;
+
+ for (p = buf; p < end; p = get_next_line(p, end))
+ num++;
+
+ sb->lineno = lineno = xmalloc(sizeof(*sb->lineno) * (num + 1));
+
+ for (p = buf; p < end; p = get_next_line(p, end))
+ *lineno++ = p - buf;
+
+ *lineno = len;
+
+ sb->num_lines = num;
+ return sb->num_lines;
+}
+
+/*
+ * Add phony grafts for use with -S; this is primarily to
+ * support git's cvsserver that wants to give a linear history
+ * to its clients.
+ */
+static int read_ancestry(const char *graft_file)
+{
+ FILE *fp = fopen(graft_file, "r");
+ struct strbuf buf = STRBUF_INIT;
+ if (!fp)
+ return -1;
+ while (!strbuf_getwholeline(&buf, fp, '\n')) {
+ /* The format is just "Commit Parent1 Parent2 ...\n" */
+ struct commit_graft *graft = read_graft_line(buf.buf, buf.len);
+ if (graft)
+ register_commit_graft(graft, 0);
+ }
+ fclose(fp);
+ strbuf_release(&buf);
+ return 0;
+}
+
+static int update_auto_abbrev(int auto_abbrev, struct origin *suspect)
+{
+ const char *uniq = find_unique_abbrev(suspect->commit->object.sha1,
+ auto_abbrev);
+ int len = strlen(uniq);
+ if (auto_abbrev < len)
+ return len;
+ return auto_abbrev;
+}
+
+/*
+ * How many columns do we need to show line numbers, authors,
+ * and filenames?
+ */
+static void find_alignment(struct scoreboard *sb, int *option)
+{
+ int longest_src_lines = 0;
+ int longest_dst_lines = 0;
+ unsigned largest_score = 0;
+ struct blame_entry *e;
+ int compute_auto_abbrev = (abbrev < 0);
+ int auto_abbrev = default_abbrev;
+
+ for (e = sb->ent; e; e = e->next) {
+ struct origin *suspect = e->suspect;
+ int num;
+
+ if (compute_auto_abbrev)
+ auto_abbrev = update_auto_abbrev(auto_abbrev, suspect);
+ if (strcmp(suspect->path, sb->path))
+ *option |= OUTPUT_SHOW_NAME;
+ num = strlen(suspect->path);
+ if (longest_file < num)
+ longest_file = num;
+ if (!(suspect->commit->object.flags & METAINFO_SHOWN)) {
+ struct commit_info ci;
+ suspect->commit->object.flags |= METAINFO_SHOWN;
+ get_commit_info(suspect->commit, &ci, 1);
+ if (*option & OUTPUT_SHOW_EMAIL)
+ num = utf8_strwidth(ci.author_mail.buf);
+ else
+ num = utf8_strwidth(ci.author.buf);
+ if (longest_author < num)
+ longest_author = num;
+ commit_info_destroy(&ci);
+ }
+ num = e->s_lno + e->num_lines;
+ if (longest_src_lines < num)
+ longest_src_lines = num;
+ num = e->lno + e->num_lines;
+ if (longest_dst_lines < num)
+ longest_dst_lines = num;
+ if (largest_score < ent_score(sb, e))
+ largest_score = ent_score(sb, e);
+ }
+ max_orig_digits = decimal_width(longest_src_lines);
+ max_digits = decimal_width(longest_dst_lines);
+ max_score_digits = decimal_width(largest_score);
+
+ if (compute_auto_abbrev)
+ /* one more abbrev length is needed for the boundary commit */
+ abbrev = auto_abbrev + 1;
+}
+
+/*
+ * For debugging -- origin is refcounted, and this asserts that
+ * we do not underflow.
+ */
+static void sanity_check_refcnt(struct scoreboard *sb)
+{
+ int baa = 0;
+ struct blame_entry *ent;
+
+ for (ent = sb->ent; ent; ent = ent->next) {
+ /* Nobody should have zero or negative refcnt */
+ if (ent->suspect->refcnt <= 0) {
+ fprintf(stderr, "%s in %s has negative refcnt %d\n",
+ ent->suspect->path,
+ sha1_to_hex(ent->suspect->commit->object.sha1),
+ ent->suspect->refcnt);
+ baa = 1;
+ }
+ }
+ if (baa) {
+ int opt = 0160;
+ find_alignment(sb, &opt);
+ output(sb, opt);
+ die("Baa %d!", baa);
+ }
+}
+
+static unsigned parse_score(const char *arg)
+{
+ char *end;
+ unsigned long score = strtoul(arg, &end, 10);
+ if (*end)
+ return 0;
+ return score;
+}
+
+static const char *add_prefix(const char *prefix, const char *path)
+{
+ return prefix_path(prefix, prefix ? strlen(prefix) : 0, path);
+}
+
+static int git_blame_config(const char *var, const char *value, void *cb)
+{
+ if (!strcmp(var, "blame.showroot")) {
+ show_root = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "blame.blankboundary")) {
+ blank_boundary = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "blame.date")) {
+ if (!value)
+ return config_error_nonbool(var);
+ blame_date_mode = parse_date_format(value);
+ return 0;
+ }
+
+ if (userdiff_config(var, value) < 0)
+ return -1;
+
+ return git_default_config(var, value, cb);
+}
+
+static void verify_working_tree_path(struct commit *work_tree, const char *path)
+{
+ struct commit_list *parents;
+
+ for (parents = work_tree->parents; parents; parents = parents->next) {
+ const unsigned char *commit_sha1 = parents->item->object.sha1;
+ unsigned char blob_sha1[20];
+ unsigned mode;
+
+ if (!get_tree_entry(commit_sha1, path, blob_sha1, &mode) &&
+ sha1_object_info(blob_sha1, NULL) == OBJ_BLOB)
+ return;
+ }
+ die("no such path '%s' in HEAD", path);
+}
+
+static struct commit_list **append_parent(struct commit_list **tail, const unsigned char *sha1)
+{
+ struct commit *parent;
+
+ parent = lookup_commit_reference(sha1);
+ if (!parent)
+ die("no such commit %s", sha1_to_hex(sha1));
+ return &commit_list_insert(parent, tail)->next;
+}
+
+static void append_merge_parents(struct commit_list **tail)
+{
+ int merge_head;
+ const char *merge_head_file = git_path("MERGE_HEAD");
+ struct strbuf line = STRBUF_INIT;
+
+ merge_head = open(merge_head_file, O_RDONLY);
+ if (merge_head < 0) {
+ if (errno == ENOENT)
+ return;
+ die("cannot open '%s' for reading", merge_head_file);
+ }
+
+ while (!strbuf_getwholeline_fd(&line, merge_head, '\n')) {
+ unsigned char sha1[20];
+ if (line.len < 40 || get_sha1_hex(line.buf, sha1))
+ die("unknown line in '%s': %s", merge_head_file, line.buf);
+ tail = append_parent(tail, sha1);
+ }
+ close(merge_head);
+ strbuf_release(&line);
+}
+
+/*
+ * This isn't as simple as passing sb->buf and sb->len, because we
+ * want to transfer ownership of the buffer to the commit (so we
+ * must use detach).
+ */
+static void set_commit_buffer_from_strbuf(struct commit *c, struct strbuf *sb)
+{
+ size_t len;
+ void *buf = strbuf_detach(sb, &len);
+ set_commit_buffer(c, buf, len);
+}
+
+/*
+ * Prepare a dummy commit that represents the work tree (or staged) item.
+ * Note that annotating work tree item never works in the reverse.
+ */
+static struct commit *fake_working_tree_commit(struct diff_options *opt,
+ const char *path,
+ const char *contents_from)
+{
+ struct commit *commit;
+ struct origin *origin;
+ struct commit_list **parent_tail, *parent;
+ unsigned char head_sha1[20];
+ struct strbuf buf = STRBUF_INIT;
+ const char *ident;
+ time_t now;
+ int size, len;
+ struct cache_entry *ce;
+ unsigned mode;
+ struct strbuf msg = STRBUF_INIT;
+
+ time(&now);
+ commit = alloc_commit_node();
+ commit->object.parsed = 1;
+ commit->date = now;
+ parent_tail = &commit->parents;
+
+ if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL))
+ die("no such ref: HEAD");
+
+ parent_tail = append_parent(parent_tail, head_sha1);
+ append_merge_parents(parent_tail);
+ verify_working_tree_path(commit, path);
+
+ origin = make_origin(commit, path);
+
+ ident = fmt_ident("Not Committed Yet", "not.committed.yet", NULL, 0);
+ strbuf_addstr(&msg, "tree 0000000000000000000000000000000000000000\n");
+ for (parent = commit->parents; parent; parent = parent->next)
+ strbuf_addf(&msg, "parent %s\n",
+ sha1_to_hex(parent->item->object.sha1));
+ strbuf_addf(&msg,
+ "author %s\n"
+ "committer %s\n\n"
+ "Version of %s from %s\n",
+ ident, ident, path,
+ (!contents_from ? path :
+ (!strcmp(contents_from, "-") ? "standard input" : contents_from)));
+ set_commit_buffer_from_strbuf(commit, &msg);
+
+ if (!contents_from || strcmp("-", contents_from)) {
+ struct stat st;
+ const char *read_from;
+ char *buf_ptr;
+ unsigned long buf_len;
+
+ if (contents_from) {
+ if (stat(contents_from, &st) < 0)
+ die_errno("Cannot stat '%s'", contents_from);
+ read_from = contents_from;
+ }
+ else {
+ if (lstat(path, &st) < 0)
+ die_errno("Cannot lstat '%s'", path);
+ read_from = path;
+ }
+ mode = canon_mode(st.st_mode);
+
+ switch (st.st_mode & S_IFMT) {
+ case S_IFREG:
+ if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV) &&
+ textconv_object(read_from, mode, null_sha1, 0, &buf_ptr, &buf_len))
+ strbuf_attach(&buf, buf_ptr, buf_len, buf_len + 1);
+ else if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
+ die_errno("cannot open or read '%s'", read_from);
+ break;
+ case S_IFLNK:
+ if (strbuf_readlink(&buf, read_from, st.st_size) < 0)
+ die_errno("cannot readlink '%s'", read_from);
+ break;
+ default:
+ die("unsupported file type %s", read_from);
+ }
+ }
+ else {
+ /* Reading from stdin */
+ mode = 0;
+ if (strbuf_read(&buf, 0, 0) < 0)
+ die_errno("failed to read from stdin");
+ }
+ convert_to_git(path, buf.buf, buf.len, &buf, 0);
+ origin->file.ptr = buf.buf;
+ origin->file.size = buf.len;
+ pretend_sha1_file(buf.buf, buf.len, OBJ_BLOB, origin->blob_sha1);
+
+ /*
+ * Read the current index, replace the path entry with
+ * origin->blob_sha1 without mucking with its mode or type
+ * bits; we are not going to write this index out -- we just
+ * want to run "diff-index --cached".
+ */
+ discard_cache();
+ read_cache();
+
+ len = strlen(path);
+ if (!mode) {
+ int pos = cache_name_pos(path, len);
+ if (0 <= pos)
+ mode = active_cache[pos]->ce_mode;
+ else
+ /* Let's not bother reading from HEAD tree */
+ mode = S_IFREG | 0644;
+ }
+ size = cache_entry_size(len);
+ ce = xcalloc(1, size);
+ hashcpy(ce->sha1, origin->blob_sha1);
+ memcpy(ce->name, path, len);
+ ce->ce_flags = create_ce_flags(0);
+ ce->ce_namelen = len;
+ ce->ce_mode = create_ce_mode(mode);
+ add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
+
+ /*
+ * We are not going to write this out, so this does not matter
+ * right now, but someday we might optimize diff-index --cached
+ * with cache-tree information.
+ */
+ cache_tree_invalidate_path(&the_index, path);
+
+ return commit;
+}
+
+static char *prepare_final(struct scoreboard *sb)
+{
+ int i;
+ const char *final_commit_name = NULL;
+ struct rev_info *revs = sb->revs;
+
+ /*
+ * There must be one and only one positive commit in the
+ * revs->pending array.
+ */
+ for (i = 0; i < revs->pending.nr; i++) {
+ struct object *obj = revs->pending.objects[i].item;
+ if (obj->flags & UNINTERESTING)
+ continue;
+ while (obj->type == OBJ_TAG)
+ obj = deref_tag(obj, NULL, 0);
+ if (obj->type != OBJ_COMMIT)
+ die("Non commit %s?", revs->pending.objects[i].name);
+ if (sb->final)
+ die("More than one commit to dig from %s and %s?",
+ revs->pending.objects[i].name,
+ final_commit_name);
+ sb->final = (struct commit *) obj;
+ final_commit_name = revs->pending.objects[i].name;
+ }
+ return xstrdup_or_null(final_commit_name);
+}
+
+static char *prepare_initial(struct scoreboard *sb)
+{
+ int i;
+ const char *final_commit_name = NULL;
+ struct rev_info *revs = sb->revs;
+
+ /*
+ * There must be one and only one negative commit, and it must be
+ * the boundary.
+ */
+ for (i = 0; i < revs->pending.nr; i++) {
+ struct object *obj = revs->pending.objects[i].item;
+ if (!(obj->flags & UNINTERESTING))
+ continue;
+ while (obj->type == OBJ_TAG)
+ obj = deref_tag(obj, NULL, 0);
+ if (obj->type != OBJ_COMMIT)
+ die("Non commit %s?", revs->pending.objects[i].name);
+ if (sb->final)
+ die("More than one commit to dig down to %s and %s?",
+ revs->pending.objects[i].name,
+ final_commit_name);
+ sb->final = (struct commit *) obj;
+ final_commit_name = revs->pending.objects[i].name;
+ }
+ if (!final_commit_name)
+ die("No commit to dig down to?");
+ return xstrdup(final_commit_name);
+}
+
+static int blame_copy_callback(const struct option *option, const char *arg, int unset)
+{
+ int *opt = option->value;
+
+ /*
+ * -C enables copy from removed files;
+ * -C -C enables copy from existing files, but only
+ * when blaming a new file;
+ * -C -C -C enables copy from existing files for
+ * everybody
+ */
+ if (*opt & PICKAXE_BLAME_COPY_HARDER)
+ *opt |= PICKAXE_BLAME_COPY_HARDEST;
+ if (*opt & PICKAXE_BLAME_COPY)
+ *opt |= PICKAXE_BLAME_COPY_HARDER;
+ *opt |= PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE;
+
+ if (arg)
+ blame_copy_score = parse_score(arg);
+ return 0;
+}
+
+static int blame_move_callback(const struct option *option, const char *arg, int unset)
+{
+ int *opt = option->value;
+
+ *opt |= PICKAXE_BLAME_MOVE;
+
+ if (arg)
+ blame_move_score = parse_score(arg);
+ return 0;
+}
+
+int cmd_blame(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info revs;
+ const char *path;
+ struct scoreboard sb;
+ struct origin *o;
+ struct blame_entry *ent = NULL;
+ long dashdash_pos, lno;
+ char *final_commit_name = NULL;
+ enum object_type type;
+
+ static struct string_list range_list;
+ static int output_option = 0, opt = 0;
+ static int show_stats = 0;
+ static const char *revs_file = NULL;
+ static const char *contents_from = NULL;
+ static const struct option options[] = {
+ OPT_BOOL(0, "incremental", &incremental, N_("Show blame entries as we find them, incrementally")),
+ OPT_BOOL('b', NULL, &blank_boundary, N_("Show blank SHA-1 for boundary commits (Default: off)")),
+ OPT_BOOL(0, "root", &show_root, N_("Do not treat root commits as boundaries (Default: off)")),
+ OPT_BOOL(0, "show-stats", &show_stats, N_("Show work cost statistics")),
+ OPT_BIT(0, "score-debug", &output_option, N_("Show output score for blame entries"), OUTPUT_SHOW_SCORE),
+ OPT_BIT('f', "show-name", &output_option, N_("Show original filename (Default: auto)"), OUTPUT_SHOW_NAME),
+ OPT_BIT('n', "show-number", &output_option, N_("Show original linenumber (Default: off)"), OUTPUT_SHOW_NUMBER),
+ OPT_BIT('p', "porcelain", &output_option, N_("Show in a format designed for machine consumption"), OUTPUT_PORCELAIN),
+ OPT_BIT(0, "line-porcelain", &output_option, N_("Show porcelain format with per-line commit information"), OUTPUT_PORCELAIN|OUTPUT_LINE_PORCELAIN),
+ OPT_BIT('c', NULL, &output_option, N_("Use the same output mode as git-annotate (Default: off)"), OUTPUT_ANNOTATE_COMPAT),
+ OPT_BIT('t', NULL, &output_option, N_("Show raw timestamp (Default: off)"), OUTPUT_RAW_TIMESTAMP),
+ OPT_BIT('l', NULL, &output_option, N_("Show long commit SHA1 (Default: off)"), OUTPUT_LONG_OBJECT_NAME),
+ OPT_BIT('s', NULL, &output_option, N_("Suppress author name and timestamp (Default: off)"), OUTPUT_NO_AUTHOR),
+ OPT_BIT('e', "show-email", &output_option, N_("Show author email instead of name (Default: off)"), OUTPUT_SHOW_EMAIL),
+ OPT_BIT('w', NULL, &xdl_opts, N_("Ignore whitespace differences"), XDF_IGNORE_WHITESPACE),
+ OPT_BIT(0, "minimal", &xdl_opts, N_("Spend extra cycles to find better match"), XDF_NEED_MINIMAL),
+ OPT_STRING('S', NULL, &revs_file, N_("file"), N_("Use revisions from <file> instead of calling git-rev-list")),
+ OPT_STRING(0, "contents", &contents_from, N_("file"), N_("Use <file>'s contents as the final image")),
+ { OPTION_CALLBACK, 'C', NULL, &opt, N_("score"), N_("Find line copies within and across files"), PARSE_OPT_OPTARG, blame_copy_callback },
+ { OPTION_CALLBACK, 'M', NULL, &opt, N_("score"), N_("Find line movements within and across files"), PARSE_OPT_OPTARG, blame_move_callback },
+ OPT_STRING_LIST('L', NULL, &range_list, N_("n,m"), N_("Process only line range n,m, counting from 1")),
+ OPT__ABBREV(&abbrev),
+ OPT_END()
+ };
+
+ struct parse_opt_ctx_t ctx;
+ int cmd_is_annotate = !strcmp(argv[0], "annotate");
+ struct range_set ranges;
+ unsigned int range_i;
+ long anchor;
+
+ git_config(git_blame_config, NULL);
+ init_revisions(&revs, NULL);
+ revs.date_mode = blame_date_mode;
+ DIFF_OPT_SET(&revs.diffopt, ALLOW_TEXTCONV);
+ DIFF_OPT_SET(&revs.diffopt, FOLLOW_RENAMES);
+
+ save_commit_buffer = 0;
+ dashdash_pos = 0;
+
+ parse_options_start(&ctx, argc, argv, prefix, options,
+ PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);
+ for (;;) {
+ switch (parse_options_step(&ctx, options, blame_opt_usage)) {
+ case PARSE_OPT_HELP:
+ exit(129);
+ case PARSE_OPT_DONE:
+ if (ctx.argv[0])
+ dashdash_pos = ctx.cpidx;
+ goto parse_done;
+ }
+
+ if (!strcmp(ctx.argv[0], "--reverse")) {
+ ctx.argv[0] = "--children";
+ reverse = 1;
+ }
+ parse_revision_opt(&revs, &ctx, options, blame_opt_usage);
+ }
+parse_done:
+ no_whole_file_rename = !DIFF_OPT_TST(&revs.diffopt, FOLLOW_RENAMES);
+ DIFF_OPT_CLR(&revs.diffopt, FOLLOW_RENAMES);
+ argc = parse_options_end(&ctx);
+
+ if (0 < abbrev)
+ /* one more abbrev length is needed for the boundary commit */
+ abbrev++;
+
+ if (revs_file && read_ancestry(revs_file))
+ die_errno("reading graft file '%s' failed", revs_file);
+
+ if (cmd_is_annotate) {
+ output_option |= OUTPUT_ANNOTATE_COMPAT;
+ blame_date_mode = DATE_ISO8601;
+ } else {
+ blame_date_mode = revs.date_mode;
+ }
+
+ /* The maximum width used to show the dates */
+ switch (blame_date_mode) {
+ case DATE_RFC2822:
+ blame_date_width = sizeof("Thu, 19 Oct 2006 16:00:04 -0700");
+ break;
+ case DATE_ISO8601_STRICT:
+ blame_date_width = sizeof("2006-10-19T16:00:04-07:00");
+ break;
+ case DATE_ISO8601:
+ blame_date_width = sizeof("2006-10-19 16:00:04 -0700");
+ break;
+ case DATE_RAW:
+ blame_date_width = sizeof("1161298804 -0700");
+ break;
+ case DATE_SHORT:
+ blame_date_width = sizeof("2006-10-19");
+ break;
+ case DATE_RELATIVE:
+ /* TRANSLATORS: This string is used to tell us the maximum
+ display width for a relative timestamp in "git blame"
+ output. For C locale, "4 years, 11 months ago", which
+ takes 22 places, is the longest among various forms of
+ relative timestamps, but your language may need more or
+ fewer display columns. */
+ blame_date_width = utf8_strwidth(_("4 years, 11 months ago")) + 1; /* add the null */
+ break;
+ case DATE_LOCAL:
+ case DATE_NORMAL:
+ blame_date_width = sizeof("Thu Oct 19 16:00:04 2006 -0700");
+ break;
+ }
+ blame_date_width -= 1; /* strip the null */
+
+ if (DIFF_OPT_TST(&revs.diffopt, FIND_COPIES_HARDER))
+ opt |= (PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE |
+ PICKAXE_BLAME_COPY_HARDER);
+
+ if (!blame_move_score)
+ blame_move_score = BLAME_DEFAULT_MOVE_SCORE;
+ if (!blame_copy_score)
+ blame_copy_score = BLAME_DEFAULT_COPY_SCORE;
+
+ /*
+ * We have collected options unknown to us in argv[1..unk]
+ * which are to be passed to revision machinery if we are
+ * going to do the "bottom" processing.
+ *
+ * The remaining are:
+ *
+ * (1) if dashdash_pos != 0, it is either
+ * "blame [revisions] -- <path>" or
+ * "blame -- <path> <rev>"
+ *
+ * (2) otherwise, it is one of the two:
+ * "blame [revisions] <path>"
+ * "blame <path> <rev>"
+ *
+ * Note that we must strip out <path> from the arguments: we do not
+ * want the path pruning but we may want "bottom" processing.
+ */
+ if (dashdash_pos) {
+ switch (argc - dashdash_pos - 1) {
+ case 2: /* (1b) */
+ if (argc != 4)
+ usage_with_options(blame_opt_usage, options);
+ /* reorder for the new way: <rev> -- <path> */
+ argv[1] = argv[3];
+ argv[3] = argv[2];
+ argv[2] = "--";
+ /* FALLTHROUGH */
+ case 1: /* (1a) */
+ path = add_prefix(prefix, argv[--argc]);
+ argv[argc] = NULL;
+ break;
+ default:
+ usage_with_options(blame_opt_usage, options);
+ }
+ } else {
+ if (argc < 2)
+ usage_with_options(blame_opt_usage, options);
+ path = add_prefix(prefix, argv[argc - 1]);
+ if (argc == 3 && !file_exists(path)) { /* (2b) */
+ path = add_prefix(prefix, argv[1]);
+ argv[1] = argv[2];
+ }
+ argv[argc - 1] = "--";
+
+ setup_work_tree();
+ if (!file_exists(path))
+ die_errno("cannot stat path '%s'", path);
+ }
+
+ revs.disable_stdin = 1;
+ setup_revisions(argc, argv, &revs, NULL);
+ memset(&sb, 0, sizeof(sb));
+
+ sb.revs = &revs;
+ if (!reverse) {
+ final_commit_name = prepare_final(&sb);
+ sb.commits.compare = compare_commits_by_commit_date;
+ }
+ else if (contents_from)
+ die("--contents and --children do not blend well.");
+ else {
+ final_commit_name = prepare_initial(&sb);
+ sb.commits.compare = compare_commits_by_reverse_commit_date;
+ }
+
+ if (!sb.final) {
+ /*
+ * "--not A B -- path" without anything positive;
+ * do not default to HEAD, but use the working tree
+ * or "--contents".
+ */
+ setup_work_tree();
+ sb.final = fake_working_tree_commit(&sb.revs->diffopt,
+ path, contents_from);
+ add_pending_object(&revs, &(sb.final->object), ":");
+ }
+ else if (contents_from)
+ die("Cannot use --contents with final commit object name");
+
+ /*
+ * If we have bottom, this will mark the ancestors of the
+ * bottom commits we would reach while traversing as
+ * uninteresting.
+ */
+ if (prepare_revision_walk(&revs))
+ die(_("revision walk setup failed"));
+
+ if (is_null_sha1(sb.final->object.sha1)) {
+ o = sb.final->util;
+ sb.final_buf = xmemdupz(o->file.ptr, o->file.size);
+ sb.final_buf_size = o->file.size;
+ }
+ else {
+ o = get_origin(&sb, sb.final, path);
+ if (fill_blob_sha1_and_mode(o))
+ die("no such path %s in %s", path, final_commit_name);
+
+ if (DIFF_OPT_TST(&sb.revs->diffopt, ALLOW_TEXTCONV) &&
+ textconv_object(path, o->mode, o->blob_sha1, 1, (char **) &sb.final_buf,
+ &sb.final_buf_size))
+ ;
+ else
+ sb.final_buf = read_sha1_file(o->blob_sha1, &type,
+ &sb.final_buf_size);
+
+ if (!sb.final_buf)
+ die("Cannot read blob %s for path %s",
+ sha1_to_hex(o->blob_sha1),
+ path);
+ }
+ num_read_blob++;
+ lno = prepare_lines(&sb);
+
+ if (lno && !range_list.nr)
+ string_list_append(&range_list, xstrdup("1"));
+
+ anchor = 1;
+ range_set_init(&ranges, range_list.nr);
+ for (range_i = 0; range_i < range_list.nr; ++range_i) {
+ long bottom, top;
+ if (parse_range_arg(range_list.items[range_i].string,
+ nth_line_cb, &sb, lno, anchor,
+ &bottom, &top, sb.path))
+ usage(blame_usage);
+ if (lno < top || ((lno || bottom) && lno < bottom))
+ die("file %s has only %lu lines", path, lno);
+ if (bottom < 1)
+ bottom = 1;
+ if (top < 1)
+ top = lno;
+ bottom--;
+ range_set_append_unsafe(&ranges, bottom, top);
+ anchor = top + 1;
+ }
+ sort_and_merge_range_set(&ranges);
+
+ for (range_i = ranges.nr; range_i > 0; --range_i) {
+ const struct range *r = &ranges.ranges[range_i - 1];
+ long bottom = r->start;
+ long top = r->end;
+ struct blame_entry *next = ent;
+ ent = xcalloc(1, sizeof(*ent));
+ ent->lno = bottom;
+ ent->num_lines = top - bottom;
+ ent->suspect = o;
+ ent->s_lno = bottom;
+ ent->next = next;
+ origin_incref(o);
+ }
+
+ o->suspects = ent;
+ prio_queue_put(&sb.commits, o->commit);
+
+ origin_decref(o);
+
+ range_set_release(&ranges);
+ string_list_clear(&range_list, 0);
+
+ sb.ent = NULL;
+ sb.path = path;
+
+ read_mailmap(&mailmap, NULL);
+
+ if (!incremental)
+ setup_pager();
+
+ assign_blame(&sb, opt);
+
+ free(final_commit_name);
+
+ if (incremental)
+ return 0;
+
+ sb.ent = blame_sort(sb.ent, compare_blame_final);
+
+ coalesce(&sb);
+
+ if (!(output_option & OUTPUT_PORCELAIN))
+ find_alignment(&sb, &output_option);
+
+ output(&sb, output_option);
+ free((void *)sb.final_buf);
+ for (ent = sb.ent; ent; ) {
+ struct blame_entry *e = ent->next;
+ free(ent);
+ ent = e;
+ }
+
+ if (show_stats) {
+ printf("num read blob: %d\n", num_read_blob);
+ printf("num get patch: %d\n", num_get_patch);
+ printf("num commits: %d\n", num_commits);
+ }
+ return 0;
+}
diff --git a/builtin/branch.c b/builtin/branch.c
new file mode 100644
index 0000000..a0a03fc
--- /dev/null
+++ b/builtin/branch.c
@@ -0,0 +1,1053 @@
+/*
+ * Builtin "git branch"
+ *
+ * Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
+ * Based on git-branch.sh by Junio C Hamano.
+ */
+
+#include "cache.h"
+#include "color.h"
+#include "refs.h"
+#include "commit.h"
+#include "builtin.h"
+#include "remote.h"
+#include "parse-options.h"
+#include "branch.h"
+#include "diff.h"
+#include "revision.h"
+#include "string-list.h"
+#include "column.h"
+#include "utf8.h"
+#include "wt-status.h"
+
+static const char * const builtin_branch_usage[] = {
+ N_("git branch [<options>] [-r | -a] [--merged | --no-merged]"),
+ N_("git branch [<options>] [-l] [-f] <branch-name> [<start-point>]"),
+ N_("git branch [<options>] [-r] (-d | -D) <branch-name>..."),
+ N_("git branch [<options>] (-m | -M) [<old-branch>] <new-branch>"),
+ NULL
+};
+
+#define REF_LOCAL_BRANCH 0x01
+#define REF_REMOTE_BRANCH 0x02
+
+static const char *head;
+static unsigned char head_sha1[20];
+
+static int branch_use_color = -1;
+static char branch_colors[][COLOR_MAXLEN] = {
+ GIT_COLOR_RESET,
+ GIT_COLOR_NORMAL, /* PLAIN */
+ GIT_COLOR_RED, /* REMOTE */
+ GIT_COLOR_NORMAL, /* LOCAL */
+ GIT_COLOR_GREEN, /* CURRENT */
+ GIT_COLOR_BLUE, /* UPSTREAM */
+};
+enum color_branch {
+ BRANCH_COLOR_RESET = 0,
+ BRANCH_COLOR_PLAIN = 1,
+ BRANCH_COLOR_REMOTE = 2,
+ BRANCH_COLOR_LOCAL = 3,
+ BRANCH_COLOR_CURRENT = 4,
+ BRANCH_COLOR_UPSTREAM = 5
+};
+
+static enum merge_filter {
+ NO_FILTER = 0,
+ SHOW_NOT_MERGED,
+ SHOW_MERGED
+} merge_filter;
+static unsigned char merge_filter_ref[20];
+
+static struct string_list output = STRING_LIST_INIT_DUP;
+static unsigned int colopts;
+
+static int parse_branch_color_slot(const char *slot)
+{
+ if (!strcasecmp(slot, "plain"))
+ return BRANCH_COLOR_PLAIN;
+ if (!strcasecmp(slot, "reset"))
+ return BRANCH_COLOR_RESET;
+ if (!strcasecmp(slot, "remote"))
+ return BRANCH_COLOR_REMOTE;
+ if (!strcasecmp(slot, "local"))
+ return BRANCH_COLOR_LOCAL;
+ if (!strcasecmp(slot, "current"))
+ return BRANCH_COLOR_CURRENT;
+ if (!strcasecmp(slot, "upstream"))
+ return BRANCH_COLOR_UPSTREAM;
+ return -1;
+}
+
+static int git_branch_config(const char *var, const char *value, void *cb)
+{
+ const char *slot_name;
+
+ if (starts_with(var, "column."))
+ return git_column_config(var, value, "branch", &colopts);
+ if (!strcmp(var, "color.branch")) {
+ branch_use_color = git_config_colorbool(var, value);
+ return 0;
+ }
+ if (skip_prefix(var, "color.branch.", &slot_name)) {
+ int slot = parse_branch_color_slot(slot_name);
+ if (slot < 0)
+ return 0;
+ if (!value)
+ return config_error_nonbool(var);
+ return color_parse(value, branch_colors[slot]);
+ }
+ return git_color_default_config(var, value, cb);
+}
+
+static const char *branch_get_color(enum color_branch ix)
+{
+ if (want_color(branch_use_color))
+ return branch_colors[ix];
+ return "";
+}
+
+static int branch_merged(int kind, const char *name,
+ struct commit *rev, struct commit *head_rev)
+{
+ /*
+ * This checks whether the merge bases of branch and HEAD (or
+ * the other branch this branch builds upon) contains the
+ * branch, which means that the branch has already been merged
+ * safely to HEAD (or the other branch).
+ */
+ struct commit *reference_rev = NULL;
+ const char *reference_name = NULL;
+ void *reference_name_to_free = NULL;
+ int merged;
+
+ if (kind == REF_LOCAL_BRANCH) {
+ struct branch *branch = branch_get(name);
+ unsigned char sha1[20];
+
+ if (branch &&
+ branch->merge &&
+ branch->merge[0] &&
+ branch->merge[0]->dst &&
+ (reference_name = reference_name_to_free =
+ resolve_refdup(branch->merge[0]->dst, RESOLVE_REF_READING,
+ sha1, NULL)) != NULL)
+ reference_rev = lookup_commit_reference(sha1);
+ }
+ if (!reference_rev)
+ reference_rev = head_rev;
+
+ merged = in_merge_bases(rev, reference_rev);
+
+ /*
+ * After the safety valve is fully redefined to "check with
+ * upstream, if any, otherwise with HEAD", we should just
+ * return the result of the in_merge_bases() above without
+ * any of the following code, but during the transition period,
+ * a gentle reminder is in order.
+ */
+ if ((head_rev != reference_rev) &&
+ in_merge_bases(rev, head_rev) != merged) {
+ if (merged)
+ warning(_("deleting branch '%s' that has been merged to\n"
+ " '%s', but not yet merged to HEAD."),
+ name, reference_name);
+ else
+ warning(_("not deleting branch '%s' that is not yet merged to\n"
+ " '%s', even though it is merged to HEAD."),
+ name, reference_name);
+ }
+ free(reference_name_to_free);
+ return merged;
+}
+
+static int check_branch_commit(const char *branchname, const char *refname,
+ unsigned char *sha1, struct commit *head_rev,
+ int kinds, int force)
+{
+ struct commit *rev = lookup_commit_reference(sha1);
+ if (!rev) {
+ error(_("Couldn't look up commit object for '%s'"), refname);
+ return -1;
+ }
+ if (!force && !branch_merged(kinds, branchname, rev, head_rev)) {
+ error(_("The branch '%s' is not fully merged.\n"
+ "If you are sure you want to delete it, "
+ "run 'git branch -D %s'."), branchname, branchname);
+ return -1;
+ }
+ return 0;
+}
+
+static void delete_branch_config(const char *branchname)
+{
+ struct strbuf buf = STRBUF_INIT;
+ strbuf_addf(&buf, "branch.%s", branchname);
+ if (git_config_rename_section(buf.buf, NULL) < 0)
+ warning(_("Update of config-file failed"));
+ strbuf_release(&buf);
+}
+
+static int delete_branches(int argc, const char **argv, int force, int kinds,
+ int quiet)
+{
+ struct commit *head_rev = NULL;
+ unsigned char sha1[20];
+ char *name = NULL;
+ const char *fmt;
+ int i;
+ int ret = 0;
+ int remote_branch = 0;
+ struct strbuf bname = STRBUF_INIT;
+
+ switch (kinds) {
+ case REF_REMOTE_BRANCH:
+ fmt = "refs/remotes/%s";
+ /* For subsequent UI messages */
+ remote_branch = 1;
+
+ force = 1;
+ break;
+ case REF_LOCAL_BRANCH:
+ fmt = "refs/heads/%s";
+ break;
+ default:
+ die(_("cannot use -a with -d"));
+ }
+
+ if (!force) {
+ head_rev = lookup_commit_reference(head_sha1);
+ if (!head_rev)
+ die(_("Couldn't look up commit object for HEAD"));
+ }
+ for (i = 0; i < argc; i++, strbuf_release(&bname)) {
+ const char *target;
+ int flags = 0;
+
+ strbuf_branchname(&bname, argv[i]);
+ if (kinds == REF_LOCAL_BRANCH && !strcmp(head, bname.buf)) {
+ error(_("Cannot delete the branch '%s' "
+ "which you are currently on."), bname.buf);
+ ret = 1;
+ continue;
+ }
+
+ free(name);
+
+ name = mkpathdup(fmt, bname.buf);
+ target = resolve_ref_unsafe(name,
+ RESOLVE_REF_READING
+ | RESOLVE_REF_NO_RECURSE
+ | RESOLVE_REF_ALLOW_BAD_NAME,
+ sha1, &flags);
+ if (!target) {
+ error(remote_branch
+ ? _("remote-tracking branch '%s' not found.")
+ : _("branch '%s' not found."), bname.buf);
+ ret = 1;
+ continue;
+ }
+
+ if (!(flags & (REF_ISSYMREF|REF_ISBROKEN)) &&
+ check_branch_commit(bname.buf, name, sha1, head_rev, kinds,
+ force)) {
+ ret = 1;
+ continue;
+ }
+
+ if (delete_ref(name, sha1, REF_NODEREF)) {
+ error(remote_branch
+ ? _("Error deleting remote-tracking branch '%s'")
+ : _("Error deleting branch '%s'"),
+ bname.buf);
+ ret = 1;
+ continue;
+ }
+ if (!quiet) {
+ printf(remote_branch
+ ? _("Deleted remote-tracking branch %s (was %s).\n")
+ : _("Deleted branch %s (was %s).\n"),
+ bname.buf,
+ (flags & REF_ISBROKEN) ? "broken"
+ : (flags & REF_ISSYMREF) ? target
+ : find_unique_abbrev(sha1, DEFAULT_ABBREV));
+ }
+ delete_branch_config(bname.buf);
+ }
+
+ free(name);
+
+ return(ret);
+}
+
+struct ref_item {
+ char *name;
+ char *dest;
+ unsigned int kind, width;
+ struct commit *commit;
+ int ignore;
+};
+
+struct ref_list {
+ struct rev_info revs;
+ int index, alloc, maxwidth, verbose, abbrev;
+ struct ref_item *list;
+ struct commit_list *with_commit;
+ int kinds;
+};
+
+static char *resolve_symref(const char *src, const char *prefix)
+{
+ unsigned char sha1[20];
+ int flag;
+ const char *dst;
+
+ dst = resolve_ref_unsafe(src, 0, sha1, &flag);
+ if (!(dst && (flag & REF_ISSYMREF)))
+ return NULL;
+ if (prefix)
+ skip_prefix(dst, prefix, &dst);
+ return xstrdup(dst);
+}
+
+struct append_ref_cb {
+ struct ref_list *ref_list;
+ const char **pattern;
+ int ret;
+};
+
+static int match_patterns(const char **pattern, const char *refname)
+{
+ if (!*pattern)
+ return 1; /* no pattern always matches */
+ while (*pattern) {
+ if (!wildmatch(*pattern, refname, 0, NULL))
+ return 1;
+ pattern++;
+ }
+ return 0;
+}
+
+static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
+{
+ struct append_ref_cb *cb = (struct append_ref_cb *)(cb_data);
+ struct ref_list *ref_list = cb->ref_list;
+ struct ref_item *newitem;
+ struct commit *commit;
+ int kind, i;
+ const char *prefix, *orig_refname = refname;
+
+ static struct {
+ int kind;
+ const char *prefix;
+ } ref_kind[] = {
+ { REF_LOCAL_BRANCH, "refs/heads/" },
+ { REF_REMOTE_BRANCH, "refs/remotes/" },
+ };
+
+ /* Detect kind */
+ for (i = 0; i < ARRAY_SIZE(ref_kind); i++) {
+ prefix = ref_kind[i].prefix;
+ if (skip_prefix(refname, prefix, &refname)) {
+ kind = ref_kind[i].kind;
+ break;
+ }
+ }
+ if (ARRAY_SIZE(ref_kind) <= i)
+ return 0;
+
+ /* Don't add types the caller doesn't want */
+ if ((kind & ref_list->kinds) == 0)
+ return 0;
+
+ if (!match_patterns(cb->pattern, refname))
+ return 0;
+
+ commit = NULL;
+ if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
+ commit = lookup_commit_reference_gently(sha1, 1);
+ if (!commit) {
+ cb->ret = error(_("branch '%s' does not point at a commit"), refname);
+ return 0;
+ }
+
+ /* Filter with with_commit if specified */
+ if (!is_descendant_of(commit, ref_list->with_commit))
+ return 0;
+
+ if (merge_filter != NO_FILTER)
+ add_pending_object(&ref_list->revs,
+ (struct object *)commit, refname);
+ }
+
+ ALLOC_GROW(ref_list->list, ref_list->index + 1, ref_list->alloc);
+
+ /* Record the new item */
+ newitem = &(ref_list->list[ref_list->index++]);
+ newitem->name = xstrdup(refname);
+ newitem->kind = kind;
+ newitem->commit = commit;
+ newitem->width = utf8_strwidth(refname);
+ newitem->dest = resolve_symref(orig_refname, prefix);
+ newitem->ignore = 0;
+ /* adjust for "remotes/" */
+ if (newitem->kind == REF_REMOTE_BRANCH &&
+ ref_list->kinds != REF_REMOTE_BRANCH)
+ newitem->width += 8;
+ if (newitem->width > ref_list->maxwidth)
+ ref_list->maxwidth = newitem->width;
+
+ return 0;
+}
+
+static void free_ref_list(struct ref_list *ref_list)
+{
+ int i;
+
+ for (i = 0; i < ref_list->index; i++) {
+ free(ref_list->list[i].name);
+ free(ref_list->list[i].dest);
+ }
+ free(ref_list->list);
+}
+
+static int ref_cmp(const void *r1, const void *r2)
+{
+ struct ref_item *c1 = (struct ref_item *)(r1);
+ struct ref_item *c2 = (struct ref_item *)(r2);
+
+ if (c1->kind != c2->kind)
+ return c1->kind - c2->kind;
+ return strcmp(c1->name, c2->name);
+}
+
+static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
+ int show_upstream_ref)
+{
+ int ours, theirs;
+ char *ref = NULL;
+ struct branch *branch = branch_get(branch_name);
+ struct strbuf fancy = STRBUF_INIT;
+ int upstream_is_gone = 0;
+ int added_decoration = 1;
+
+ switch (stat_tracking_info(branch, &ours, &theirs)) {
+ case 0:
+ /* no base */
+ return;
+ case -1:
+ /* with "gone" base */
+ upstream_is_gone = 1;
+ break;
+ default:
+ /* with base */
+ break;
+ }
+
+ if (show_upstream_ref) {
+ ref = shorten_unambiguous_ref(branch->merge[0]->dst, 0);
+ if (want_color(branch_use_color))
+ strbuf_addf(&fancy, "%s%s%s",
+ branch_get_color(BRANCH_COLOR_UPSTREAM),
+ ref, branch_get_color(BRANCH_COLOR_RESET));
+ else
+ strbuf_addstr(&fancy, ref);
+ }
+
+ if (upstream_is_gone) {
+ if (show_upstream_ref)
+ strbuf_addf(stat, _("[%s: gone]"), fancy.buf);
+ else
+ added_decoration = 0;
+ } else if (!ours && !theirs) {
+ if (show_upstream_ref)
+ strbuf_addf(stat, _("[%s]"), fancy.buf);
+ else
+ added_decoration = 0;
+ } else if (!ours) {
+ if (show_upstream_ref)
+ strbuf_addf(stat, _("[%s: behind %d]"), fancy.buf, theirs);
+ else
+ strbuf_addf(stat, _("[behind %d]"), theirs);
+
+ } else if (!theirs) {
+ if (show_upstream_ref)
+ strbuf_addf(stat, _("[%s: ahead %d]"), fancy.buf, ours);
+ else
+ strbuf_addf(stat, _("[ahead %d]"), ours);
+ } else {
+ if (show_upstream_ref)
+ strbuf_addf(stat, _("[%s: ahead %d, behind %d]"),
+ fancy.buf, ours, theirs);
+ else
+ strbuf_addf(stat, _("[ahead %d, behind %d]"),
+ ours, theirs);
+ }
+ strbuf_release(&fancy);
+ if (added_decoration)
+ strbuf_addch(stat, ' ');
+ free(ref);
+}
+
+static void add_verbose_info(struct strbuf *out, struct ref_item *item,
+ int verbose, int abbrev)
+{
+ struct strbuf subject = STRBUF_INIT, stat = STRBUF_INIT;
+ const char *sub = _(" **** invalid ref ****");
+ struct commit *commit = item->commit;
+
+ if (!parse_commit(commit)) {
+ pp_commit_easy(CMIT_FMT_ONELINE, commit, &subject);
+ sub = subject.buf;
+ }
+
+ if (item->kind == REF_LOCAL_BRANCH)
+ fill_tracking_info(&stat, item->name, verbose > 1);
+
+ strbuf_addf(out, " %s %s%s",
+ find_unique_abbrev(item->commit->object.sha1, abbrev),
+ stat.buf, sub);
+ strbuf_release(&stat);
+ strbuf_release(&subject);
+}
+
+static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
+ int abbrev, int current, char *prefix)
+{
+ char c;
+ int color;
+ struct strbuf out = STRBUF_INIT, name = STRBUF_INIT;
+
+ if (item->ignore)
+ return;
+
+ switch (item->kind) {
+ case REF_LOCAL_BRANCH:
+ color = BRANCH_COLOR_LOCAL;
+ break;
+ case REF_REMOTE_BRANCH:
+ color = BRANCH_COLOR_REMOTE;
+ break;
+ default:
+ color = BRANCH_COLOR_PLAIN;
+ break;
+ }
+
+ c = ' ';
+ if (current) {
+ c = '*';
+ color = BRANCH_COLOR_CURRENT;
+ }
+
+ strbuf_addf(&name, "%s%s", prefix, item->name);
+ if (verbose) {
+ int utf8_compensation = strlen(name.buf) - utf8_strwidth(name.buf);
+ strbuf_addf(&out, "%c %s%-*s%s", c, branch_get_color(color),
+ maxwidth + utf8_compensation, name.buf,
+ branch_get_color(BRANCH_COLOR_RESET));
+ } else
+ strbuf_addf(&out, "%c %s%s%s", c, branch_get_color(color),
+ name.buf, branch_get_color(BRANCH_COLOR_RESET));
+
+ if (item->dest)
+ strbuf_addf(&out, " -> %s", item->dest);
+ else if (verbose)
+ /* " f7c0c00 [ahead 58, behind 197] vcs-svn: drop obj_pool.h" */
+ add_verbose_info(&out, item, verbose, abbrev);
+ if (column_active(colopts)) {
+ assert(!verbose && "--column and --verbose are incompatible");
+ string_list_append(&output, out.buf);
+ } else {
+ printf("%s\n", out.buf);
+ }
+ strbuf_release(&name);
+ strbuf_release(&out);
+}
+
+static int calc_maxwidth(struct ref_list *refs)
+{
+ int i, w = 0;
+ for (i = 0; i < refs->index; i++) {
+ if (refs->list[i].ignore)
+ continue;
+ if (refs->list[i].width > w)
+ w = refs->list[i].width;
+ }
+ return w;
+}
+
+static char *get_head_description(void)
+{
+ struct strbuf desc = STRBUF_INIT;
+ struct wt_status_state state;
+ memset(&state, 0, sizeof(state));
+ wt_status_get_state(&state, 1);
+ if (state.rebase_in_progress ||
+ state.rebase_interactive_in_progress)
+ strbuf_addf(&desc, _("(no branch, rebasing %s)"),
+ state.branch);
+ else if (state.bisect_in_progress)
+ strbuf_addf(&desc, _("(no branch, bisect started on %s)"),
+ state.branch);
+ else if (state.detached_from) {
+ /* TRANSLATORS: make sure these match _("HEAD detached at ")
+ and _("HEAD detached from ") in wt-status.c */
+ if (state.detached_at)
+ strbuf_addf(&desc, _("(HEAD detached at %s)"),
+ state.detached_from);
+ else
+ strbuf_addf(&desc, _("(HEAD detached from %s)"),
+ state.detached_from);
+ }
+ else
+ strbuf_addstr(&desc, _("(no branch)"));
+ free(state.branch);
+ free(state.onto);
+ free(state.detached_from);
+ return strbuf_detach(&desc, NULL);
+}
+
+static void show_detached(struct ref_list *ref_list)
+{
+ struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 1);
+
+ if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
+ struct ref_item item;
+ item.name = get_head_description();
+ item.width = utf8_strwidth(item.name);
+ item.kind = REF_LOCAL_BRANCH;
+ item.dest = NULL;
+ item.commit = head_commit;
+ item.ignore = 0;
+ if (item.width > ref_list->maxwidth)
+ ref_list->maxwidth = item.width;
+ print_ref_item(&item, ref_list->maxwidth, ref_list->verbose, ref_list->abbrev, 1, "");
+ free(item.name);
+ }
+}
+
+static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit, const char **pattern)
+{
+ int i;
+ struct append_ref_cb cb;
+ struct ref_list ref_list;
+
+ memset(&ref_list, 0, sizeof(ref_list));
+ ref_list.kinds = kinds;
+ ref_list.verbose = verbose;
+ ref_list.abbrev = abbrev;
+ ref_list.with_commit = with_commit;
+ if (merge_filter != NO_FILTER)
+ init_revisions(&ref_list.revs, NULL);
+ cb.ref_list = &ref_list;
+ cb.pattern = pattern;
+ cb.ret = 0;
+ for_each_rawref(append_ref, &cb);
+ if (merge_filter != NO_FILTER) {
+ struct commit *filter;
+ filter = lookup_commit_reference_gently(merge_filter_ref, 0);
+ if (!filter)
+ die(_("object '%s' does not point to a commit"),
+ sha1_to_hex(merge_filter_ref));
+
+ filter->object.flags |= UNINTERESTING;
+ add_pending_object(&ref_list.revs,
+ (struct object *) filter, "");
+ ref_list.revs.limited = 1;
+
+ if (prepare_revision_walk(&ref_list.revs))
+ die(_("revision walk setup failed"));
+
+ for (i = 0; i < ref_list.index; i++) {
+ struct ref_item *item = &ref_list.list[i];
+ struct commit *commit = item->commit;
+ int is_merged = !!(commit->object.flags & UNINTERESTING);
+ item->ignore = is_merged != (merge_filter == SHOW_MERGED);
+ }
+
+ for (i = 0; i < ref_list.index; i++) {
+ struct ref_item *item = &ref_list.list[i];
+ clear_commit_marks(item->commit, ALL_REV_FLAGS);
+ }
+ clear_commit_marks(filter, ALL_REV_FLAGS);
+
+ if (verbose)
+ ref_list.maxwidth = calc_maxwidth(&ref_list);
+ }
+
+ qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
+
+ detached = (detached && (kinds & REF_LOCAL_BRANCH));
+ if (detached && match_patterns(pattern, "HEAD"))
+ show_detached(&ref_list);
+
+ for (i = 0; i < ref_list.index; i++) {
+ int current = !detached &&
+ (ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
+ !strcmp(ref_list.list[i].name, head);
+ char *prefix = (kinds != REF_REMOTE_BRANCH &&
+ ref_list.list[i].kind == REF_REMOTE_BRANCH)
+ ? "remotes/" : "";
+ print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
+ abbrev, current, prefix);
+ }
+
+ free_ref_list(&ref_list);
+
+ if (cb.ret)
+ error(_("some refs could not be read"));
+
+ return cb.ret;
+}
+
+static void rename_branch(const char *oldname, const char *newname, int force)
+{
+ struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
+ struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
+ int recovery = 0;
+ int clobber_head_ok;
+
+ if (!oldname)
+ die(_("cannot rename the current branch while not on any."));
+
+ if (strbuf_check_branch_ref(&oldref, oldname)) {
+ /*
+ * Bad name --- this could be an attempt to rename a
+ * ref that we used to allow to be created by accident.
+ */
+ if (ref_exists(oldref.buf))
+ recovery = 1;
+ else
+ die(_("Invalid branch name: '%s'"), oldname);
+ }
+
+ /*
+ * A command like "git branch -M currentbranch currentbranch" cannot
+ * cause the worktree to become inconsistent with HEAD, so allow it.
+ */
+ clobber_head_ok = !strcmp(oldname, newname);
+
+ validate_new_branchname(newname, &newref, force, clobber_head_ok);
+
+ strbuf_addf(&logmsg, "Branch: renamed %s to %s",
+ oldref.buf, newref.buf);
+
+ if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
+ die(_("Branch rename failed"));
+ strbuf_release(&logmsg);
+
+ if (recovery)
+ warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);
+
+ /* no need to pass logmsg here as HEAD didn't really move */
+ if (!strcmp(oldname, head) && create_symref("HEAD", newref.buf, NULL))
+ die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
+
+ strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
+ strbuf_release(&oldref);
+ strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
+ strbuf_release(&newref);
+ if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
+ die(_("Branch is renamed, but update of config-file failed"));
+ strbuf_release(&oldsection);
+ strbuf_release(&newsection);
+}
+
+static int opt_parse_merge_filter(const struct option *opt, const char *arg, int unset)
+{
+ merge_filter = ((opt->long_name[0] == 'n')
+ ? SHOW_NOT_MERGED
+ : SHOW_MERGED);
+ if (unset)
+ merge_filter = SHOW_NOT_MERGED; /* b/c for --no-merged */
+ if (!arg)
+ arg = "HEAD";
+ if (get_sha1(arg, merge_filter_ref))
+ die(_("malformed object name %s"), arg);
+ return 0;
+}
+
+static const char edit_description[] = "BRANCH_DESCRIPTION";
+
+static int edit_branch_description(const char *branch_name)
+{
+ FILE *fp;
+ int status;
+ struct strbuf buf = STRBUF_INIT;
+ struct strbuf name = STRBUF_INIT;
+
+ read_branch_desc(&buf, branch_name);
+ if (!buf.len || buf.buf[buf.len-1] != '\n')
+ strbuf_addch(&buf, '\n');
+ strbuf_commented_addf(&buf,
+ "Please edit the description for the branch\n"
+ " %s\n"
+ "Lines starting with '%c' will be stripped.\n",
+ branch_name, comment_line_char);
+ fp = fopen(git_path(edit_description), "w");
+ if ((fwrite(buf.buf, 1, buf.len, fp) < buf.len) || fclose(fp)) {
+ strbuf_release(&buf);
+ return error(_("could not write branch description template: %s"),
+ strerror(errno));
+ }
+ strbuf_reset(&buf);
+ if (launch_editor(git_path(edit_description), &buf, NULL)) {
+ strbuf_release(&buf);
+ return -1;
+ }
+ stripspace(&buf, 1);
+
+ strbuf_addf(&name, "branch.%s.description", branch_name);
+ status = git_config_set(name.buf, buf.len ? buf.buf : NULL);
+ strbuf_release(&name);
+ strbuf_release(&buf);
+
+ return status;
+}
+
+int cmd_branch(int argc, const char **argv, const char *prefix)
+{
+ int delete = 0, rename = 0, force = 0, list = 0;
+ int verbose = 0, abbrev = -1, detached = 0;
+ int reflog = 0, edit_description = 0;
+ int quiet = 0, unset_upstream = 0;
+ const char *new_upstream = NULL;
+ enum branch_track track;
+ int kinds = REF_LOCAL_BRANCH;
+ struct commit_list *with_commit = NULL;
+
+ struct option options[] = {
+ OPT_GROUP(N_("Generic options")),
+ OPT__VERBOSE(&verbose,
+ N_("show hash and subject, give twice for upstream branch")),
+ OPT__QUIET(&quiet, N_("suppress informational messages")),
+ OPT_SET_INT('t', "track", &track, N_("set up tracking mode (see git-pull(1))"),
+ BRANCH_TRACK_EXPLICIT),
+ OPT_SET_INT( 0, "set-upstream", &track, N_("change upstream info"),
+ BRANCH_TRACK_OVERRIDE),
+ OPT_STRING('u', "set-upstream-to", &new_upstream, "upstream", "change the upstream info"),
+ OPT_BOOL(0, "unset-upstream", &unset_upstream, "Unset the upstream info"),
+ OPT__COLOR(&branch_use_color, N_("use colored output")),
+ OPT_SET_INT('r', "remotes", &kinds, N_("act on remote-tracking branches"),
+ REF_REMOTE_BRANCH),
+ {
+ OPTION_CALLBACK, 0, "contains", &with_commit, N_("commit"),
+ N_("print only branches that contain the commit"),
+ PARSE_OPT_LASTARG_DEFAULT,
+ parse_opt_with_commit, (intptr_t)"HEAD",
+ },
+ {
+ OPTION_CALLBACK, 0, "with", &with_commit, N_("commit"),
+ N_("print only branches that contain the commit"),
+ PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
+ parse_opt_with_commit, (intptr_t) "HEAD",
+ },
+ OPT__ABBREV(&abbrev),
+
+ OPT_GROUP(N_("Specific git-branch actions:")),
+ OPT_SET_INT('a', "all", &kinds, N_("list both remote-tracking and local branches"),
+ REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
+ OPT_BIT('d', "delete", &delete, N_("delete fully merged branch"), 1),
+ OPT_BIT('D', NULL, &delete, N_("delete branch (even if not merged)"), 2),
+ OPT_BIT('m', "move", &rename, N_("move/rename a branch and its reflog"), 1),
+ OPT_BIT('M', NULL, &rename, N_("move/rename a branch, even if target exists"), 2),
+ OPT_BOOL(0, "list", &list, N_("list branch names")),
+ OPT_BOOL('l', "create-reflog", &reflog, N_("create the branch's reflog")),
+ OPT_BOOL(0, "edit-description", &edit_description,
+ N_("edit the description for the branch")),
+ OPT__FORCE(&force, N_("force creation, move/rename, deletion")),
+ {
+ OPTION_CALLBACK, 0, "no-merged", &merge_filter_ref,
+ N_("commit"), N_("print only not merged branches"),
+ PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
+ opt_parse_merge_filter, (intptr_t) "HEAD",
+ },
+ {
+ OPTION_CALLBACK, 0, "merged", &merge_filter_ref,
+ N_("commit"), N_("print only merged branches"),
+ PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
+ opt_parse_merge_filter, (intptr_t) "HEAD",
+ },
+ OPT_COLUMN(0, "column", &colopts, N_("list branches in columns")),
+ OPT_END(),
+ };
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_branch_usage, options);
+
+ git_config(git_branch_config, NULL);
+
+ track = git_branch_track;
+
+ head = resolve_refdup("HEAD", 0, head_sha1, NULL);
+ if (!head)
+ die(_("Failed to resolve HEAD as a valid ref."));
+ if (!strcmp(head, "HEAD"))
+ detached = 1;
+ else if (!skip_prefix(head, "refs/heads/", &head))
+ die(_("HEAD not found below refs/heads!"));
+ hashcpy(merge_filter_ref, head_sha1);
+
+
+ argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
+ 0);
+
+ if (!delete && !rename && !edit_description && !new_upstream && !unset_upstream && argc == 0)
+ list = 1;
+
+ if (with_commit || merge_filter != NO_FILTER)
+ list = 1;
+
+ if (!!delete + !!rename + !!new_upstream +
+ list + unset_upstream > 1)
+ usage_with_options(builtin_branch_usage, options);
+
+ if (abbrev == -1)
+ abbrev = DEFAULT_ABBREV;
+ finalize_colopts(&colopts, -1);
+ if (verbose) {
+ if (explicitly_enable_column(colopts))
+ die(_("--column and --verbose are incompatible"));
+ colopts = 0;
+ }
+
+ if (force) {
+ delete *= 2;
+ rename *= 2;
+ }
+
+ if (delete) {
+ if (!argc)
+ die(_("branch name required"));
+ return delete_branches(argc, argv, delete > 1, kinds, quiet);
+ } else if (list) {
+ int ret = print_ref_list(kinds, detached, verbose, abbrev,
+ with_commit, argv);
+ print_columns(&output, colopts, NULL);
+ string_list_clear(&output, 0);
+ return ret;
+ }
+ else if (edit_description) {
+ const char *branch_name;
+ struct strbuf branch_ref = STRBUF_INIT;
+
+ if (!argc) {
+ if (detached)
+ die(_("Cannot give description to detached HEAD"));
+ branch_name = head;
+ } else if (argc == 1)
+ branch_name = argv[0];
+ else
+ die(_("cannot edit description of more than one branch"));
+
+ strbuf_addf(&branch_ref, "refs/heads/%s", branch_name);
+ if (!ref_exists(branch_ref.buf)) {
+ strbuf_release(&branch_ref);
+
+ if (!argc)
+ return error(_("No commit on branch '%s' yet."),
+ branch_name);
+ else
+ return error(_("No branch named '%s'."),
+ branch_name);
+ }
+ strbuf_release(&branch_ref);
+
+ if (edit_branch_description(branch_name))
+ return 1;
+ } else if (rename) {
+ if (!argc)
+ die(_("branch name required"));
+ else if (argc == 1)
+ rename_branch(head, argv[0], rename > 1);
+ else if (argc == 2)
+ rename_branch(argv[0], argv[1], rename > 1);
+ else
+ die(_("too many branches for a rename operation"));
+ } else if (new_upstream) {
+ struct branch *branch = branch_get(argv[0]);
+
+ if (argc > 1)
+ die(_("too many branches to set new upstream"));
+
+ if (!branch) {
+ if (!argc || !strcmp(argv[0], "HEAD"))
+ die(_("could not set upstream of HEAD to %s when "
+ "it does not point to any branch."),
+ new_upstream);
+ die(_("no such branch '%s'"), argv[0]);
+ }
+
+ if (!ref_exists(branch->refname))
+ die(_("branch '%s' does not exist"), branch->name);
+
+ /*
+ * create_branch takes care of setting up the tracking
+ * info and making sure new_upstream is correct
+ */
+ create_branch(head, branch->name, new_upstream, 0, 0, 0, quiet, BRANCH_TRACK_OVERRIDE);
+ } else if (unset_upstream) {
+ struct branch *branch = branch_get(argv[0]);
+ struct strbuf buf = STRBUF_INIT;
+
+ if (argc > 1)
+ die(_("too many branches to unset upstream"));
+
+ if (!branch) {
+ if (!argc || !strcmp(argv[0], "HEAD"))
+ die(_("could not unset upstream of HEAD when "
+ "it does not point to any branch."));
+ die(_("no such branch '%s'"), argv[0]);
+ }
+
+ if (!branch_has_merge_config(branch))
+ die(_("Branch '%s' has no upstream information"), branch->name);
+
+ strbuf_addf(&buf, "branch.%s.remote", branch->name);
+ git_config_set_multivar(buf.buf, NULL, NULL, 1);
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "branch.%s.merge", branch->name);
+ git_config_set_multivar(buf.buf, NULL, NULL, 1);
+ strbuf_release(&buf);
+ } else if (argc > 0 && argc <= 2) {
+ struct branch *branch = branch_get(argv[0]);
+ int branch_existed = 0, remote_tracking = 0;
+ struct strbuf buf = STRBUF_INIT;
+
+ if (!strcmp(argv[0], "HEAD"))
+ die(_("it does not make sense to create 'HEAD' manually"));
+
+ if (!branch)
+ die(_("no such branch '%s'"), argv[0]);
+
+ if (kinds != REF_LOCAL_BRANCH)
+ die(_("-a and -r options to 'git branch' do not make sense with a branch name"));
+
+ if (track == BRANCH_TRACK_OVERRIDE)
+ fprintf(stderr, _("The --set-upstream flag is deprecated and will be removed. Consider using --track or --set-upstream-to\n"));
+
+ strbuf_addf(&buf, "refs/remotes/%s", branch->name);
+ remote_tracking = ref_exists(buf.buf);
+ strbuf_release(&buf);
+
+ branch_existed = ref_exists(branch->refname);
+ create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
+ force, reflog, 0, quiet, track);
+
+ /*
+ * We only show the instructions if the user gave us
+ * one branch which doesn't exist locally, but is the
+ * name of a remote-tracking branch.
+ */
+ if (argc == 1 && track == BRANCH_TRACK_OVERRIDE &&
+ !branch_existed && remote_tracking) {
+ fprintf(stderr, _("\nIf you wanted to make '%s' track '%s', do this:\n\n"), head, branch->name);
+ fprintf(stderr, _(" git branch -d %s\n"), branch->name);
+ fprintf(stderr, _(" git branch --set-upstream-to %s\n"), branch->name);
+ }
+
+ } else
+ usage_with_options(builtin_branch_usage, options);
+
+ return 0;
+}
diff --git a/builtin/bundle.c b/builtin/bundle.c
new file mode 100644
index 0000000..4883a43
--- /dev/null
+++ b/builtin/bundle.c
@@ -0,0 +1,73 @@
+#include "builtin.h"
+#include "cache.h"
+#include "bundle.h"
+
+/*
+ * Basic handler for bundle files to connect repositories via sneakernet.
+ * Invocation must include action.
+ * This function can create a bundle or provide information on an existing
+ * bundle supporting "fetch", "pull", and "ls-remote".
+ */
+
+static const char builtin_bundle_usage[] =
+ "git bundle create <file> <git-rev-list args>\n"
+ " or: git bundle verify <file>\n"
+ " or: git bundle list-heads <file> [<refname>...]\n"
+ " or: git bundle unbundle <file> [<refname>...]";
+
+int cmd_bundle(int argc, const char **argv, const char *prefix)
+{
+ struct bundle_header header;
+ const char *cmd, *bundle_file;
+ int bundle_fd = -1;
+ char buffer[PATH_MAX];
+
+ if (argc < 3)
+ usage(builtin_bundle_usage);
+
+ cmd = argv[1];
+ bundle_file = argv[2];
+ argc -= 2;
+ argv += 2;
+
+ if (prefix && bundle_file[0] != '/') {
+ snprintf(buffer, sizeof(buffer), "%s/%s", prefix, bundle_file);
+ bundle_file = buffer;
+ }
+
+ memset(&header, 0, sizeof(header));
+ if (strcmp(cmd, "create") && (bundle_fd =
+ read_bundle_header(bundle_file, &header)) < 0)
+ return 1;
+
+ if (!strcmp(cmd, "verify")) {
+ close(bundle_fd);
+ if (argc != 1) {
+ usage(builtin_bundle_usage);
+ return 1;
+ }
+ if (verify_bundle(&header, 1))
+ return 1;
+ fprintf(stderr, _("%s is okay\n"), bundle_file);
+ return 0;
+ }
+ if (!strcmp(cmd, "list-heads")) {
+ close(bundle_fd);
+ return !!list_bundle_refs(&header, argc, argv);
+ }
+ if (!strcmp(cmd, "create")) {
+ if (argc < 2) {
+ usage(builtin_bundle_usage);
+ return 1;
+ }
+ if (!startup_info->have_repository)
+ die(_("Need a repository to create a bundle."));
+ return !!create_bundle(&header, bundle_file, argc, argv);
+ } else if (!strcmp(cmd, "unbundle")) {
+ if (!startup_info->have_repository)
+ die(_("Need a repository to unbundle."));
+ return !!unbundle(&header, bundle_fd, 0) ||
+ list_bundle_refs(&header, argc, argv);
+ } else
+ usage(builtin_bundle_usage);
+}
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
new file mode 100644
index 0000000..df99df4
--- /dev/null
+++ b/builtin/cat-file.c
@@ -0,0 +1,409 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "builtin.h"
+#include "parse-options.h"
+#include "userdiff.h"
+#include "streaming.h"
+
+static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
+{
+ unsigned char sha1[20];
+ enum object_type type;
+ char *buf;
+ unsigned long size;
+ struct object_context obj_context;
+
+ if (get_sha1_with_context(obj_name, 0, sha1, &obj_context))
+ die("Not a valid object name %s", obj_name);
+
+ buf = NULL;
+ switch (opt) {
+ case 't':
+ type = sha1_object_info(sha1, NULL);
+ if (type > 0) {
+ printf("%s\n", typename(type));
+ return 0;
+ }
+ break;
+
+ case 's':
+ type = sha1_object_info(sha1, &size);
+ if (type > 0) {
+ printf("%lu\n", size);
+ return 0;
+ }
+ break;
+
+ case 'e':
+ return !has_sha1_file(sha1);
+
+ case 'c':
+ if (!obj_context.path[0])
+ die("git cat-file --textconv %s: <object> must be <sha1:path>",
+ obj_name);
+
+ if (textconv_object(obj_context.path, obj_context.mode, sha1, 1, &buf, &size))
+ break;
+
+ case 'p':
+ type = sha1_object_info(sha1, NULL);
+ if (type < 0)
+ die("Not a valid object name %s", obj_name);
+
+ /* custom pretty-print here */
+ if (type == OBJ_TREE) {
+ const char *ls_args[3] = { NULL };
+ ls_args[0] = "ls-tree";
+ ls_args[1] = obj_name;
+ return cmd_ls_tree(2, ls_args, NULL);
+ }
+
+ if (type == OBJ_BLOB)
+ return stream_blob_to_fd(1, sha1, NULL, 0);
+ buf = read_sha1_file(sha1, &type, &size);
+ if (!buf)
+ die("Cannot read object %s", obj_name);
+
+ /* otherwise just spit out the data */
+ break;
+
+ case 0:
+ if (type_from_string(exp_type) == OBJ_BLOB) {
+ unsigned char blob_sha1[20];
+ if (sha1_object_info(sha1, NULL) == OBJ_TAG) {
+ char *buffer = read_sha1_file(sha1, &type, &size);
+ const char *target;
+ if (!skip_prefix(buffer, "object ", &target) ||
+ get_sha1_hex(target, blob_sha1))
+ die("%s not a valid tag", sha1_to_hex(sha1));
+ free(buffer);
+ } else
+ hashcpy(blob_sha1, sha1);
+
+ if (sha1_object_info(blob_sha1, NULL) == OBJ_BLOB)
+ return stream_blob_to_fd(1, blob_sha1, NULL, 0);
+ /*
+ * we attempted to dereference a tag to a blob
+ * and failed; there may be new dereference
+ * mechanisms this code is not aware of.
+ * fall-back to the usual case.
+ */
+ }
+ buf = read_object_with_reference(sha1, exp_type, &size, NULL);
+ break;
+
+ default:
+ die("git cat-file: unknown option: %s", exp_type);
+ }
+
+ if (!buf)
+ die("git cat-file %s: bad file", obj_name);
+
+ write_or_die(1, buf, size);
+ return 0;
+}
+
+struct expand_data {
+ unsigned char sha1[20];
+ enum object_type type;
+ unsigned long size;
+ unsigned long disk_size;
+ const char *rest;
+ unsigned char delta_base_sha1[20];
+
+ /*
+ * If mark_query is true, we do not expand anything, but rather
+ * just mark the object_info with items we wish to query.
+ */
+ int mark_query;
+
+ /*
+ * Whether to split the input on whitespace before feeding it to
+ * get_sha1; this is decided during the mark_query phase based on
+ * whether we have a %(rest) token in our format.
+ */
+ int split_on_whitespace;
+
+ /*
+ * After a mark_query run, this object_info is set up to be
+ * passed to sha1_object_info_extended. It will point to the data
+ * elements above, so you can retrieve the response from there.
+ */
+ struct object_info info;
+};
+
+static int is_atom(const char *atom, const char *s, int slen)
+{
+ int alen = strlen(atom);
+ return alen == slen && !memcmp(atom, s, alen);
+}
+
+static void expand_atom(struct strbuf *sb, const char *atom, int len,
+ void *vdata)
+{
+ struct expand_data *data = vdata;
+
+ if (is_atom("objectname", atom, len)) {
+ if (!data->mark_query)
+ strbuf_addstr(sb, sha1_to_hex(data->sha1));
+ } else if (is_atom("objecttype", atom, len)) {
+ if (data->mark_query)
+ data->info.typep = &data->type;
+ else
+ strbuf_addstr(sb, typename(data->type));
+ } else if (is_atom("objectsize", atom, len)) {
+ if (data->mark_query)
+ data->info.sizep = &data->size;
+ else
+ strbuf_addf(sb, "%lu", data->size);
+ } else if (is_atom("objectsize:disk", atom, len)) {
+ if (data->mark_query)
+ data->info.disk_sizep = &data->disk_size;
+ else
+ strbuf_addf(sb, "%lu", data->disk_size);
+ } else if (is_atom("rest", atom, len)) {
+ if (data->mark_query)
+ data->split_on_whitespace = 1;
+ else if (data->rest)
+ strbuf_addstr(sb, data->rest);
+ } else if (is_atom("deltabase", atom, len)) {
+ if (data->mark_query)
+ data->info.delta_base_sha1 = data->delta_base_sha1;
+ else
+ strbuf_addstr(sb, sha1_to_hex(data->delta_base_sha1));
+ } else
+ die("unknown format element: %.*s", len, atom);
+}
+
+static size_t expand_format(struct strbuf *sb, const char *start, void *data)
+{
+ const char *end;
+
+ if (*start != '(')
+ return 0;
+ end = strchr(start + 1, ')');
+ if (!end)
+ die("format element '%s' does not end in ')'", start);
+
+ expand_atom(sb, start + 1, end - start - 1, data);
+
+ return end - start + 1;
+}
+
+static void print_object_or_die(int fd, struct expand_data *data)
+{
+ const unsigned char *sha1 = data->sha1;
+
+ assert(data->info.typep);
+
+ if (data->type == OBJ_BLOB) {
+ if (stream_blob_to_fd(fd, sha1, NULL, 0) < 0)
+ die("unable to stream %s to stdout", sha1_to_hex(sha1));
+ }
+ else {
+ enum object_type type;
+ unsigned long size;
+ void *contents;
+
+ contents = read_sha1_file(sha1, &type, &size);
+ if (!contents)
+ die("object %s disappeared", sha1_to_hex(sha1));
+ if (type != data->type)
+ die("object %s changed type!?", sha1_to_hex(sha1));
+ if (data->info.sizep && size != data->size)
+ die("object %s changed size!?", sha1_to_hex(sha1));
+
+ write_or_die(fd, contents, size);
+ free(contents);
+ }
+}
+
+struct batch_options {
+ int enabled;
+ int print_contents;
+ const char *format;
+};
+
+static int batch_one_object(const char *obj_name, struct batch_options *opt,
+ struct expand_data *data)
+{
+ struct strbuf buf = STRBUF_INIT;
+
+ if (!obj_name)
+ return 1;
+
+ if (get_sha1(obj_name, data->sha1)) {
+ printf("%s missing\n", obj_name);
+ fflush(stdout);
+ return 0;
+ }
+
+ if (sha1_object_info_extended(data->sha1, &data->info, LOOKUP_REPLACE_OBJECT) < 0) {
+ printf("%s missing\n", obj_name);
+ fflush(stdout);
+ return 0;
+ }
+
+ strbuf_expand(&buf, opt->format, expand_format, data);
+ strbuf_addch(&buf, '\n');
+ write_or_die(1, buf.buf, buf.len);
+ strbuf_release(&buf);
+
+ if (opt->print_contents) {
+ print_object_or_die(1, data);
+ write_or_die(1, "\n", 1);
+ }
+ return 0;
+}
+
+static int batch_objects(struct batch_options *opt)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct expand_data data;
+ int save_warning;
+ int retval = 0;
+
+ if (!opt->format)
+ opt->format = "%(objectname) %(objecttype) %(objectsize)";
+
+ /*
+ * Expand once with our special mark_query flag, which will prime the
+ * object_info to be handed to sha1_object_info_extended for each
+ * object.
+ */
+ memset(&data, 0, sizeof(data));
+ data.mark_query = 1;
+ strbuf_expand(&buf, opt->format, expand_format, &data);
+ data.mark_query = 0;
+
+ /*
+ * If we are printing out the object, then always fill in the type,
+ * since we will want to decide whether or not to stream.
+ */
+ if (opt->print_contents)
+ data.info.typep = &data.type;
+
+ /*
+ * We are going to call get_sha1 on a potentially very large number of
+ * objects. In most large cases, these will be actual object sha1s. The
+ * cost to double-check that each one is not also a ref (just so we can
+ * warn) ends up dwarfing the actual cost of the object lookups
+ * themselves. We can work around it by just turning off the warning.
+ */
+ save_warning = warn_on_object_refname_ambiguity;
+ warn_on_object_refname_ambiguity = 0;
+
+ while (strbuf_getline(&buf, stdin, '\n') != EOF) {
+ if (data.split_on_whitespace) {
+ /*
+ * Split at first whitespace, tying off the beginning
+ * of the string and saving the remainder (or NULL) in
+ * data.rest.
+ */
+ char *p = strpbrk(buf.buf, " \t");
+ if (p) {
+ while (*p && strchr(" \t", *p))
+ *p++ = '\0';
+ }
+ data.rest = p;
+ }
+
+ retval = batch_one_object(buf.buf, opt, &data);
+ if (retval)
+ break;
+ }
+
+ strbuf_release(&buf);
+ warn_on_object_refname_ambiguity = save_warning;
+ return retval;
+}
+
+static const char * const cat_file_usage[] = {
+ N_("git cat-file (-t | -s | -e | -p | <type> | --textconv) <object>"),
+ N_("git cat-file (--batch | --batch-check) < <list-of-objects>"),
+ NULL
+};
+
+static int git_cat_file_config(const char *var, const char *value, void *cb)
+{
+ if (userdiff_config(var, value) < 0)
+ return -1;
+
+ return git_default_config(var, value, cb);
+}
+
+static int batch_option_callback(const struct option *opt,
+ const char *arg,
+ int unset)
+{
+ struct batch_options *bo = opt->value;
+
+ if (unset) {
+ memset(bo, 0, sizeof(*bo));
+ return 0;
+ }
+
+ bo->enabled = 1;
+ bo->print_contents = !strcmp(opt->long_name, "batch");
+ bo->format = arg;
+
+ return 0;
+}
+
+int cmd_cat_file(int argc, const char **argv, const char *prefix)
+{
+ int opt = 0;
+ const char *exp_type = NULL, *obj_name = NULL;
+ struct batch_options batch = {0};
+
+ const struct option options[] = {
+ OPT_GROUP(N_("<type> can be one of: blob, tree, commit, tag")),
+ OPT_SET_INT('t', NULL, &opt, N_("show object type"), 't'),
+ OPT_SET_INT('s', NULL, &opt, N_("show object size"), 's'),
+ OPT_SET_INT('e', NULL, &opt,
+ N_("exit with zero when there's no error"), 'e'),
+ OPT_SET_INT('p', NULL, &opt, N_("pretty-print object's content"), 'p'),
+ OPT_SET_INT(0, "textconv", &opt,
+ N_("for blob objects, run textconv on object's content"), 'c'),
+ { OPTION_CALLBACK, 0, "batch", &batch, "format",
+ N_("show info and content of objects fed from the standard input"),
+ PARSE_OPT_OPTARG, batch_option_callback },
+ { OPTION_CALLBACK, 0, "batch-check", &batch, "format",
+ N_("show info about objects fed from the standard input"),
+ PARSE_OPT_OPTARG, batch_option_callback },
+ OPT_END()
+ };
+
+ git_config(git_cat_file_config, NULL);
+
+ if (argc != 3 && argc != 2)
+ usage_with_options(cat_file_usage, options);
+
+ argc = parse_options(argc, argv, prefix, options, cat_file_usage, 0);
+
+ if (opt) {
+ if (argc == 1)
+ obj_name = argv[0];
+ else
+ usage_with_options(cat_file_usage, options);
+ }
+ if (!opt && !batch.enabled) {
+ if (argc == 2) {
+ exp_type = argv[0];
+ obj_name = argv[1];
+ } else
+ usage_with_options(cat_file_usage, options);
+ }
+ if (batch.enabled && (opt || argc)) {
+ usage_with_options(cat_file_usage, options);
+ }
+
+ if (batch.enabled)
+ return batch_objects(&batch);
+
+ return cat_one_file(opt, exp_type, obj_name);
+}
diff --git a/builtin/check-attr.c b/builtin/check-attr.c
new file mode 100644
index 0000000..21d2bed
--- /dev/null
+++ b/builtin/check-attr.c
@@ -0,0 +1,186 @@
+#include "builtin.h"
+#include "cache.h"
+#include "attr.h"
+#include "quote.h"
+#include "parse-options.h"
+
+static int all_attrs;
+static int cached_attrs;
+static int stdin_paths;
+static const char * const check_attr_usage[] = {
+N_("git check-attr [-a | --all | <attr>...] [--] <pathname>..."),
+N_("git check-attr --stdin [-z] [-a | --all | <attr>...] < <list-of-paths>"),
+NULL
+};
+
+static int nul_term_line;
+
+static const struct option check_attr_options[] = {
+ OPT_BOOL('a', "all", &all_attrs, N_("report all attributes set on file")),
+ OPT_BOOL(0, "cached", &cached_attrs, N_("use .gitattributes only from the index")),
+ OPT_BOOL(0 , "stdin", &stdin_paths, N_("read file names from stdin")),
+ OPT_BOOL('z', NULL, &nul_term_line,
+ N_("terminate input and output records by a NUL character")),
+ OPT_END()
+};
+
+static void output_attr(int cnt, struct git_attr_check *check,
+ const char *file)
+{
+ int j;
+ for (j = 0; j < cnt; j++) {
+ const char *value = check[j].value;
+
+ if (ATTR_TRUE(value))
+ value = "set";
+ else if (ATTR_FALSE(value))
+ value = "unset";
+ else if (ATTR_UNSET(value))
+ value = "unspecified";
+
+ if (nul_term_line) {
+ printf("%s%c" /* path */
+ "%s%c" /* attrname */
+ "%s%c" /* attrvalue */,
+ file, 0, git_attr_name(check[j].attr), 0, value, 0);
+ } else {
+ quote_c_style(file, NULL, stdout, 0);
+ printf(": %s: %s\n", git_attr_name(check[j].attr), value);
+ }
+
+ }
+}
+
+static void check_attr(const char *prefix, int cnt,
+ struct git_attr_check *check, const char *file)
+{
+ char *full_path =
+ prefix_path(prefix, prefix ? strlen(prefix) : 0, file);
+ if (check != NULL) {
+ if (git_check_attr(full_path, cnt, check))
+ die("git_check_attr died");
+ output_attr(cnt, check, file);
+ } else {
+ if (git_all_attrs(full_path, &cnt, &check))
+ die("git_all_attrs died");
+ output_attr(cnt, check, file);
+ free(check);
+ }
+ free(full_path);
+}
+
+static void check_attr_stdin_paths(const char *prefix, int cnt,
+ struct git_attr_check *check)
+{
+ struct strbuf buf, nbuf;
+ int line_termination = nul_term_line ? 0 : '\n';
+
+ strbuf_init(&buf, 0);
+ strbuf_init(&nbuf, 0);
+ while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+ if (line_termination && buf.buf[0] == '"') {
+ strbuf_reset(&nbuf);
+ if (unquote_c_style(&nbuf, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &nbuf);
+ }
+ check_attr(prefix, cnt, check, buf.buf);
+ maybe_flush_or_die(stdout, "attribute to stdout");
+ }
+ strbuf_release(&buf);
+ strbuf_release(&nbuf);
+}
+
+static NORETURN void error_with_usage(const char *msg)
+{
+ error("%s", msg);
+ usage_with_options(check_attr_usage, check_attr_options);
+}
+
+int cmd_check_attr(int argc, const char **argv, const char *prefix)
+{
+ struct git_attr_check *check;
+ int cnt, i, doubledash, filei;
+
+ if (!is_bare_repository())
+ setup_work_tree();
+
+ git_config(git_default_config, NULL);
+
+ argc = parse_options(argc, argv, prefix, check_attr_options,
+ check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
+
+ if (read_cache() < 0) {
+ die("invalid cache");
+ }
+
+ if (cached_attrs)
+ git_attr_set_direction(GIT_ATTR_INDEX, NULL);
+
+ doubledash = -1;
+ for (i = 0; doubledash < 0 && i < argc; i++) {
+ if (!strcmp(argv[i], "--"))
+ doubledash = i;
+ }
+
+ /* Process --all and/or attribute arguments: */
+ if (all_attrs) {
+ if (doubledash >= 1)
+ error_with_usage("Attributes and --all both specified");
+
+ cnt = 0;
+ filei = doubledash + 1;
+ } else if (doubledash == 0) {
+ error_with_usage("No attribute specified");
+ } else if (doubledash < 0) {
+ if (!argc)
+ error_with_usage("No attribute specified");
+
+ if (stdin_paths) {
+ /* Treat all arguments as attribute names. */
+ cnt = argc;
+ filei = argc;
+ } else {
+ /* Treat exactly one argument as an attribute name. */
+ cnt = 1;
+ filei = 1;
+ }
+ } else {
+ cnt = doubledash;
+ filei = doubledash + 1;
+ }
+
+ /* Check file argument(s): */
+ if (stdin_paths) {
+ if (filei < argc)
+ error_with_usage("Can't specify files with --stdin");
+ } else {
+ if (filei >= argc)
+ error_with_usage("No file specified");
+ }
+
+ if (all_attrs) {
+ check = NULL;
+ } else {
+ check = xcalloc(cnt, sizeof(*check));
+ for (i = 0; i < cnt; i++) {
+ const char *name;
+ struct git_attr *a;
+ name = argv[i];
+ a = git_attr(name);
+ if (!a)
+ return error("%s: not a valid attribute name",
+ name);
+ check[i].attr = a;
+ }
+ }
+
+ if (stdin_paths)
+ check_attr_stdin_paths(prefix, cnt, check);
+ else {
+ for (i = filei; i < argc; i++)
+ check_attr(prefix, cnt, check, argv[i]);
+ maybe_flush_or_die(stdout, "attribute to stdout");
+ }
+ return 0;
+}
diff --git a/builtin/check-ignore.c b/builtin/check-ignore.c
new file mode 100644
index 0000000..dc8d97c
--- /dev/null
+++ b/builtin/check-ignore.c
@@ -0,0 +1,187 @@
+#include "builtin.h"
+#include "cache.h"
+#include "dir.h"
+#include "quote.h"
+#include "pathspec.h"
+#include "parse-options.h"
+
+static int quiet, verbose, stdin_paths, show_non_matching, no_index;
+static const char * const check_ignore_usage[] = {
+"git check-ignore [<options>] <pathname>...",
+"git check-ignore [<options>] --stdin < <list-of-paths>",
+NULL
+};
+
+static int nul_term_line;
+
+static const struct option check_ignore_options[] = {
+ OPT__QUIET(&quiet, N_("suppress progress reporting")),
+ OPT__VERBOSE(&verbose, N_("be verbose")),
+ OPT_GROUP(""),
+ OPT_BOOL(0, "stdin", &stdin_paths,
+ N_("read file names from stdin")),
+ OPT_BOOL('z', NULL, &nul_term_line,
+ N_("terminate input and output records by a NUL character")),
+ OPT_BOOL('n', "non-matching", &show_non_matching,
+ N_("show non-matching input paths")),
+ OPT_BOOL(0, "no-index", &no_index,
+ N_("ignore index when checking")),
+ OPT_END()
+};
+
+static void output_exclude(const char *path, struct exclude *exclude)
+{
+ char *bang = (exclude && exclude->flags & EXC_FLAG_NEGATIVE) ? "!" : "";
+ char *slash = (exclude && exclude->flags & EXC_FLAG_MUSTBEDIR) ? "/" : "";
+ if (!nul_term_line) {
+ if (!verbose) {
+ write_name_quoted(path, stdout, '\n');
+ } else {
+ if (exclude) {
+ quote_c_style(exclude->el->src, NULL, stdout, 0);
+ printf(":%d:%s%s%s\t",
+ exclude->srcpos,
+ bang, exclude->pattern, slash);
+ }
+ else {
+ printf("::\t");
+ }
+ quote_c_style(path, NULL, stdout, 0);
+ fputc('\n', stdout);
+ }
+ } else {
+ if (!verbose) {
+ printf("%s%c", path, '\0');
+ } else {
+ if (exclude)
+ printf("%s%c%d%c%s%s%s%c%s%c",
+ exclude->el->src, '\0',
+ exclude->srcpos, '\0',
+ bang, exclude->pattern, slash, '\0',
+ path, '\0');
+ else
+ printf("%c%c%c%s%c", '\0', '\0', '\0', path, '\0');
+ }
+ }
+}
+
+static int check_ignore(struct dir_struct *dir,
+ const char *prefix, int argc, const char **argv)
+{
+ const char *full_path;
+ char *seen;
+ int num_ignored = 0, dtype = DT_UNKNOWN, i;
+ struct exclude *exclude;
+ struct pathspec pathspec;
+
+ if (!argc) {
+ if (!quiet)
+ fprintf(stderr, "no pathspec given.\n");
+ return 0;
+ }
+
+ /*
+ * check-ignore just needs paths. Magic beyond :/ is really
+ * irrelevant.
+ */
+ parse_pathspec(&pathspec,
+ PATHSPEC_ALL_MAGIC & ~PATHSPEC_FROMTOP,
+ PATHSPEC_SYMLINK_LEADING_PATH |
+ PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE |
+ PATHSPEC_KEEP_ORDER,
+ prefix, argv);
+
+ /*
+ * look for pathspecs matching entries in the index, since these
+ * should not be ignored, in order to be consistent with
+ * 'git status', 'git add' etc.
+ */
+ seen = find_pathspecs_matching_against_index(&pathspec);
+ for (i = 0; i < pathspec.nr; i++) {
+ full_path = pathspec.items[i].match;
+ exclude = NULL;
+ if (!seen[i]) {
+ exclude = last_exclude_matching(dir, full_path, &dtype);
+ }
+ if (!quiet && (exclude || show_non_matching))
+ output_exclude(pathspec.items[i].original, exclude);
+ if (exclude)
+ num_ignored++;
+ }
+ free(seen);
+
+ return num_ignored;
+}
+
+static int check_ignore_stdin_paths(struct dir_struct *dir, const char *prefix)
+{
+ struct strbuf buf, nbuf;
+ char *pathspec[2] = { NULL, NULL };
+ int line_termination = nul_term_line ? 0 : '\n';
+ int num_ignored = 0;
+
+ strbuf_init(&buf, 0);
+ strbuf_init(&nbuf, 0);
+ while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+ if (line_termination && buf.buf[0] == '"') {
+ strbuf_reset(&nbuf);
+ if (unquote_c_style(&nbuf, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &nbuf);
+ }
+ pathspec[0] = buf.buf;
+ num_ignored += check_ignore(dir, prefix,
+ 1, (const char **)pathspec);
+ maybe_flush_or_die(stdout, "check-ignore to stdout");
+ }
+ strbuf_release(&buf);
+ strbuf_release(&nbuf);
+ return num_ignored;
+}
+
+int cmd_check_ignore(int argc, const char **argv, const char *prefix)
+{
+ int num_ignored;
+ struct dir_struct dir;
+
+ git_config(git_default_config, NULL);
+
+ argc = parse_options(argc, argv, prefix, check_ignore_options,
+ check_ignore_usage, 0);
+
+ if (stdin_paths) {
+ if (argc > 0)
+ die(_("cannot specify pathnames with --stdin"));
+ } else {
+ if (nul_term_line)
+ die(_("-z only makes sense with --stdin"));
+ if (argc == 0)
+ die(_("no path specified"));
+ }
+ if (quiet) {
+ if (argc > 1)
+ die(_("--quiet is only valid with a single pathname"));
+ if (verbose)
+ die(_("cannot have both --quiet and --verbose"));
+ }
+ if (show_non_matching && !verbose)
+ die(_("--non-matching is only valid with --verbose"));
+
+ /* read_cache() is only necessary so we can watch out for submodules. */
+ if (!no_index && read_cache() < 0)
+ die(_("index file corrupt"));
+
+ memset(&dir, 0, sizeof(dir));
+ setup_standard_excludes(&dir);
+
+ if (stdin_paths) {
+ num_ignored = check_ignore_stdin_paths(&dir, prefix);
+ } else {
+ num_ignored = check_ignore(&dir, prefix, argc, argv);
+ maybe_flush_or_die(stdout, "ignore to stdout");
+ }
+
+ clear_directory(&dir);
+
+ return !num_ignored;
+}
diff --git a/builtin/check-mailmap.c b/builtin/check-mailmap.c
new file mode 100644
index 0000000..eaaea54
--- /dev/null
+++ b/builtin/check-mailmap.c
@@ -0,0 +1,66 @@
+#include "builtin.h"
+#include "mailmap.h"
+#include "parse-options.h"
+#include "string-list.h"
+
+static int use_stdin;
+static const char * const check_mailmap_usage[] = {
+N_("git check-mailmap [<options>] <contact>..."),
+NULL
+};
+
+static const struct option check_mailmap_options[] = {
+ OPT_BOOL(0, "stdin", &use_stdin, N_("also read contacts from stdin")),
+ OPT_END()
+};
+
+static void check_mailmap(struct string_list *mailmap, const char *contact)
+{
+ const char *name, *mail;
+ size_t namelen, maillen;
+ struct ident_split ident;
+
+ if (split_ident_line(&ident, contact, strlen(contact)))
+ die(_("unable to parse contact: %s"), contact);
+
+ name = ident.name_begin;
+ namelen = ident.name_end - ident.name_begin;
+ mail = ident.mail_begin;
+ maillen = ident.mail_end - ident.mail_begin;
+
+ map_user(mailmap, &mail, &maillen, &name, &namelen);
+
+ if (namelen)
+ printf("%.*s ", (int)namelen, name);
+ printf("<%.*s>\n", (int)maillen, mail);
+}
+
+int cmd_check_mailmap(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ struct string_list mailmap = STRING_LIST_INIT_NODUP;
+
+ git_config(git_default_config, NULL);
+ argc = parse_options(argc, argv, prefix, check_mailmap_options,
+ check_mailmap_usage, 0);
+ if (argc == 0 && !use_stdin)
+ die(_("no contacts specified"));
+
+ read_mailmap(&mailmap, NULL);
+
+ for (i = 0; i < argc; ++i)
+ check_mailmap(&mailmap, argv[i]);
+ maybe_flush_or_die(stdout, "stdout");
+
+ if (use_stdin) {
+ struct strbuf buf = STRBUF_INIT;
+ while (strbuf_getline(&buf, stdin, '\n') != EOF) {
+ check_mailmap(&mailmap, buf.buf);
+ maybe_flush_or_die(stdout, "stdout");
+ }
+ strbuf_release(&buf);
+ }
+
+ clear_mailmap(&mailmap);
+ return 0;
+}
diff --git a/builtin/check-ref-format.c b/builtin/check-ref-format.c
new file mode 100644
index 0000000..fd915d5
--- /dev/null
+++ b/builtin/check-ref-format.c
@@ -0,0 +1,88 @@
+/*
+ * GIT - The information manager from hell
+ */
+
+#include "cache.h"
+#include "refs.h"
+#include "builtin.h"
+#include "strbuf.h"
+
+static const char builtin_check_ref_format_usage[] =
+"git check-ref-format [--normalize] [<options>] <refname>\n"
+" or: git check-ref-format --branch <branchname-shorthand>";
+
+/*
+ * Return a copy of refname but with leading slashes removed and runs
+ * of adjacent slashes replaced with single slashes.
+ *
+ * This function is similar to normalize_path_copy(), but stripped down
+ * to meet check_ref_format's simpler needs.
+ */
+static char *collapse_slashes(const char *refname)
+{
+ char *ret = xmalloc(strlen(refname) + 1);
+ char ch;
+ char prev = '/';
+ char *cp = ret;
+
+ while ((ch = *refname++) != '\0') {
+ if (prev == '/' && ch == prev)
+ continue;
+
+ *cp++ = ch;
+ prev = ch;
+ }
+ *cp = '\0';
+ return ret;
+}
+
+static int check_ref_format_branch(const char *arg)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int nongit;
+
+ setup_git_directory_gently(&nongit);
+ if (strbuf_check_branch_ref(&sb, arg))
+ die("'%s' is not a valid branch name", arg);
+ printf("%s\n", sb.buf + 11);
+ return 0;
+}
+
+int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ int normalize = 0;
+ int flags = 0;
+ const char *refname;
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage(builtin_check_ref_format_usage);
+
+ if (argc == 3 && !strcmp(argv[1], "--branch"))
+ return check_ref_format_branch(argv[2]);
+
+ for (i = 1; i < argc && argv[i][0] == '-'; i++) {
+ if (!strcmp(argv[i], "--normalize") || !strcmp(argv[i], "--print"))
+ normalize = 1;
+ else if (!strcmp(argv[i], "--allow-onelevel"))
+ flags |= REFNAME_ALLOW_ONELEVEL;
+ else if (!strcmp(argv[i], "--no-allow-onelevel"))
+ flags &= ~REFNAME_ALLOW_ONELEVEL;
+ else if (!strcmp(argv[i], "--refspec-pattern"))
+ flags |= REFNAME_REFSPEC_PATTERN;
+ else
+ usage(builtin_check_ref_format_usage);
+ }
+ if (! (i == argc - 1))
+ usage(builtin_check_ref_format_usage);
+
+ refname = argv[i];
+ if (normalize)
+ refname = collapse_slashes(refname);
+ if (check_refname_format(refname, flags))
+ return 1;
+ if (normalize)
+ printf("%s\n", refname);
+
+ return 0;
+}
diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c
new file mode 100644
index 0000000..9ca2da1
--- /dev/null
+++ b/builtin/checkout-index.c
@@ -0,0 +1,286 @@
+/*
+ * Check-out files from the "current cache directory"
+ *
+ * Copyright (C) 2005 Linus Torvalds
+ *
+ */
+#include "builtin.h"
+#include "lockfile.h"
+#include "quote.h"
+#include "cache-tree.h"
+#include "parse-options.h"
+
+#define CHECKOUT_ALL 4
+static int line_termination = '\n';
+static int checkout_stage; /* default to checkout stage0 */
+static int to_tempfile;
+static char topath[4][TEMPORARY_FILENAME_LENGTH + 1];
+
+static struct checkout state;
+
+static void write_tempfile_record(const char *name, const char *prefix)
+{
+ int i;
+
+ if (CHECKOUT_ALL == checkout_stage) {
+ for (i = 1; i < 4; i++) {
+ if (i > 1)
+ putchar(' ');
+ if (topath[i][0])
+ fputs(topath[i], stdout);
+ else
+ putchar('.');
+ }
+ } else
+ fputs(topath[checkout_stage], stdout);
+
+ putchar('\t');
+ write_name_quoted_relative(name, prefix, stdout, line_termination);
+
+ for (i = 0; i < 4; i++) {
+ topath[i][0] = 0;
+ }
+}
+
+static int checkout_file(const char *name, const char *prefix)
+{
+ int namelen = strlen(name);
+ int pos = cache_name_pos(name, namelen);
+ int has_same_name = 0;
+ int did_checkout = 0;
+ int errs = 0;
+
+ if (pos < 0)
+ pos = -pos - 1;
+
+ while (pos < active_nr) {
+ struct cache_entry *ce = active_cache[pos];
+ if (ce_namelen(ce) != namelen ||
+ memcmp(ce->name, name, namelen))
+ break;
+ has_same_name = 1;
+ pos++;
+ if (ce_stage(ce) != checkout_stage
+ && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
+ continue;
+ did_checkout = 1;
+ if (checkout_entry(ce, &state,
+ to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
+ errs++;
+ }
+
+ if (did_checkout) {
+ if (to_tempfile)
+ write_tempfile_record(name, prefix);
+ return errs > 0 ? -1 : 0;
+ }
+
+ if (!state.quiet) {
+ fprintf(stderr, "git checkout-index: %s ", name);
+ if (!has_same_name)
+ fprintf(stderr, "is not in the cache");
+ else if (checkout_stage)
+ fprintf(stderr, "does not exist at stage %d",
+ checkout_stage);
+ else
+ fprintf(stderr, "is unmerged");
+ fputc('\n', stderr);
+ }
+ return -1;
+}
+
+static void checkout_all(const char *prefix, int prefix_length)
+{
+ int i, errs = 0;
+ struct cache_entry *last_ce = NULL;
+
+ for (i = 0; i < active_nr ; i++) {
+ struct cache_entry *ce = active_cache[i];
+ if (ce_stage(ce) != checkout_stage
+ && (CHECKOUT_ALL != checkout_stage || !ce_stage(ce)))
+ continue;
+ if (prefix && *prefix &&
+ (ce_namelen(ce) <= prefix_length ||
+ memcmp(prefix, ce->name, prefix_length)))
+ continue;
+ if (last_ce && to_tempfile) {
+ if (ce_namelen(last_ce) != ce_namelen(ce)
+ || memcmp(last_ce->name, ce->name, ce_namelen(ce)))
+ write_tempfile_record(last_ce->name, prefix);
+ }
+ if (checkout_entry(ce, &state,
+ to_tempfile ? topath[ce_stage(ce)] : NULL) < 0)
+ errs++;
+ last_ce = ce;
+ }
+ if (last_ce && to_tempfile)
+ write_tempfile_record(last_ce->name, prefix);
+ if (errs)
+ /* we have already done our error reporting.
+ * exit with the same code as die().
+ */
+ exit(128);
+}
+
+static const char * const builtin_checkout_index_usage[] = {
+ N_("git checkout-index [<options>] [--] [<file>...]"),
+ NULL
+};
+
+static struct lock_file lock_file;
+
+static int option_parse_u(const struct option *opt,
+ const char *arg, int unset)
+{
+ int *newfd = opt->value;
+
+ state.refresh_cache = 1;
+ state.istate = &the_index;
+ if (*newfd < 0)
+ *newfd = hold_locked_index(&lock_file, 1);
+ return 0;
+}
+
+static int option_parse_z(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset)
+ line_termination = '\n';
+ else
+ line_termination = 0;
+ return 0;
+}
+
+static int option_parse_prefix(const struct option *opt,
+ const char *arg, int unset)
+{
+ state.base_dir = arg;
+ state.base_dir_len = strlen(arg);
+ return 0;
+}
+
+static int option_parse_stage(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (!strcmp(arg, "all")) {
+ to_tempfile = 1;
+ checkout_stage = CHECKOUT_ALL;
+ } else {
+ int ch = arg[0];
+ if ('1' <= ch && ch <= '3')
+ checkout_stage = arg[0] - '0';
+ else
+ die("stage should be between 1 and 3 or all");
+ }
+ return 0;
+}
+
+int cmd_checkout_index(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ int newfd = -1;
+ int all = 0;
+ int read_from_stdin = 0;
+ int prefix_length;
+ int force = 0, quiet = 0, not_new = 0;
+ struct option builtin_checkout_index_options[] = {
+ OPT_BOOL('a', "all", &all,
+ N_("check out all files in the index")),
+ OPT__FORCE(&force, N_("force overwrite of existing files")),
+ OPT__QUIET(&quiet,
+ N_("no warning for existing files and files not in index")),
+ OPT_BOOL('n', "no-create", &not_new,
+ N_("don't checkout new files")),
+ { OPTION_CALLBACK, 'u', "index", &newfd, NULL,
+ N_("update stat information in the index file"),
+ PARSE_OPT_NOARG, option_parse_u },
+ { OPTION_CALLBACK, 'z', NULL, NULL, NULL,
+ N_("paths are separated with NUL character"),
+ PARSE_OPT_NOARG, option_parse_z },
+ OPT_BOOL(0, "stdin", &read_from_stdin,
+ N_("read list of paths from the standard input")),
+ OPT_BOOL(0, "temp", &to_tempfile,
+ N_("write the content to temporary files")),
+ OPT_CALLBACK(0, "prefix", NULL, N_("string"),
+ N_("when creating files, prepend <string>"),
+ option_parse_prefix),
+ OPT_CALLBACK(0, "stage", NULL, NULL,
+ N_("copy out the files from named stage"),
+ option_parse_stage),
+ OPT_END()
+ };
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_checkout_index_usage,
+ builtin_checkout_index_options);
+ git_config(git_default_config, NULL);
+ state.base_dir = "";
+ prefix_length = prefix ? strlen(prefix) : 0;
+
+ if (read_cache() < 0) {
+ die("invalid cache");
+ }
+
+ argc = parse_options(argc, argv, prefix, builtin_checkout_index_options,
+ builtin_checkout_index_usage, 0);
+ state.force = force;
+ state.quiet = quiet;
+ state.not_new = not_new;
+
+ if (state.base_dir_len || to_tempfile) {
+ /* when --prefix is specified we do not
+ * want to update cache.
+ */
+ if (state.refresh_cache) {
+ rollback_lock_file(&lock_file);
+ newfd = -1;
+ }
+ state.refresh_cache = 0;
+ }
+
+ /* Check out named files first */
+ for (i = 0; i < argc; i++) {
+ const char *arg = argv[i];
+ const char *p;
+
+ if (all)
+ die("git checkout-index: don't mix '--all' and explicit filenames");
+ if (read_from_stdin)
+ die("git checkout-index: don't mix '--stdin' and explicit filenames");
+ p = prefix_path(prefix, prefix_length, arg);
+ checkout_file(p, prefix);
+ if (p < arg || p > arg + strlen(arg))
+ free((char *)p);
+ }
+
+ if (read_from_stdin) {
+ struct strbuf buf = STRBUF_INIT, nbuf = STRBUF_INIT;
+
+ if (all)
+ die("git checkout-index: don't mix '--all' and '--stdin'");
+
+ while (strbuf_getline(&buf, stdin, line_termination) != EOF) {
+ const char *p;
+ if (line_termination && buf.buf[0] == '"') {
+ strbuf_reset(&nbuf);
+ if (unquote_c_style(&nbuf, buf.buf, NULL))
+ die("line is badly quoted");
+ strbuf_swap(&buf, &nbuf);
+ }
+ p = prefix_path(prefix, prefix_length, buf.buf);
+ checkout_file(p, prefix);
+ if (p < buf.buf || p > buf.buf + buf.len)
+ free((char *)p);
+ }
+ strbuf_release(&nbuf);
+ strbuf_release(&buf);
+ }
+
+ if (all)
+ checkout_all(prefix, prefix_length);
+
+ if (0 <= newfd &&
+ write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ die("Unable to write new index file");
+ return 0;
+}
diff --git a/builtin/checkout.c b/builtin/checkout.c
new file mode 100644
index 0000000..3e141fc
--- /dev/null
+++ b/builtin/checkout.c
@@ -0,0 +1,1247 @@
+#include "builtin.h"
+#include "lockfile.h"
+#include "parse-options.h"
+#include "refs.h"
+#include "commit.h"
+#include "tree.h"
+#include "tree-walk.h"
+#include "cache-tree.h"
+#include "unpack-trees.h"
+#include "dir.h"
+#include "run-command.h"
+#include "merge-recursive.h"
+#include "branch.h"
+#include "diff.h"
+#include "revision.h"
+#include "remote.h"
+#include "blob.h"
+#include "xdiff-interface.h"
+#include "ll-merge.h"
+#include "resolve-undo.h"
+#include "submodule.h"
+#include "argv-array.h"
+
+static const char * const checkout_usage[] = {
+ N_("git checkout [<options>] <branch>"),
+ N_("git checkout [<options>] [<branch>] -- <file>..."),
+ NULL,
+};
+
+struct checkout_opts {
+ int patch_mode;
+ int quiet;
+ int merge;
+ int force;
+ int force_detach;
+ int writeout_stage;
+ int overwrite_ignore;
+ int ignore_skipworktree;
+
+ const char *new_branch;
+ const char *new_branch_force;
+ const char *new_orphan_branch;
+ int new_branch_log;
+ enum branch_track track;
+ struct diff_options diff_options;
+
+ int branch_exists;
+ const char *prefix;
+ struct pathspec pathspec;
+ struct tree *source_tree;
+};
+
+static int post_checkout_hook(struct commit *old, struct commit *new,
+ int changed)
+{
+ return run_hook_le(NULL, "post-checkout",
+ sha1_to_hex(old ? old->object.sha1 : null_sha1),
+ sha1_to_hex(new ? new->object.sha1 : null_sha1),
+ changed ? "1" : "0", NULL);
+ /* "new" can be NULL when checking out from the index before
+ a commit exists. */
+
+}
+
+static int update_some(const unsigned char *sha1, struct strbuf *base,
+ const char *pathname, unsigned mode, int stage, void *context)
+{
+ int len;
+ struct cache_entry *ce;
+ int pos;
+
+ if (S_ISDIR(mode))
+ return READ_TREE_RECURSIVE;
+
+ len = base->len + strlen(pathname);
+ ce = xcalloc(1, cache_entry_size(len));
+ hashcpy(ce->sha1, sha1);
+ memcpy(ce->name, base->buf, base->len);
+ memcpy(ce->name + base->len, pathname, len - base->len);
+ ce->ce_flags = create_ce_flags(0) | CE_UPDATE;
+ ce->ce_namelen = len;
+ ce->ce_mode = create_ce_mode(mode);
+
+ /*
+ * If the entry is the same as the current index, we can leave the old
+ * entry in place. Whether it is UPTODATE or not, checkout_entry will
+ * do the right thing.
+ */
+ pos = cache_name_pos(ce->name, ce->ce_namelen);
+ if (pos >= 0) {
+ struct cache_entry *old = active_cache[pos];
+ if (ce->ce_mode == old->ce_mode &&
+ !hashcmp(ce->sha1, old->sha1)) {
+ old->ce_flags |= CE_UPDATE;
+ free(ce);
+ return 0;
+ }
+ }
+
+ add_cache_entry(ce, ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE);
+ return 0;
+}
+
+static int read_tree_some(struct tree *tree, const struct pathspec *pathspec)
+{
+ read_tree_recursive(tree, "", 0, 0, pathspec, update_some, NULL);
+
+ /* update the index with the given tree's info
+ * for all args, expanding wildcards, and exit
+ * with any non-zero return code.
+ */
+ return 0;
+}
+
+static int skip_same_name(const struct cache_entry *ce, int pos)
+{
+ while (++pos < active_nr &&
+ !strcmp(active_cache[pos]->name, ce->name))
+ ; /* skip */
+ return pos;
+}
+
+static int check_stage(int stage, const struct cache_entry *ce, int pos)
+{
+ while (pos < active_nr &&
+ !strcmp(active_cache[pos]->name, ce->name)) {
+ if (ce_stage(active_cache[pos]) == stage)
+ return 0;
+ pos++;
+ }
+ if (stage == 2)
+ return error(_("path '%s' does not have our version"), ce->name);
+ else
+ return error(_("path '%s' does not have their version"), ce->name);
+}
+
+static int check_stages(unsigned stages, const struct cache_entry *ce, int pos)
+{
+ unsigned seen = 0;
+ const char *name = ce->name;
+
+ while (pos < active_nr) {
+ ce = active_cache[pos];
+ if (strcmp(name, ce->name))
+ break;
+ seen |= (1 << ce_stage(ce));
+ pos++;
+ }
+ if ((stages & seen) != stages)
+ return error(_("path '%s' does not have all necessary versions"),
+ name);
+ return 0;
+}
+
+static int checkout_stage(int stage, struct cache_entry *ce, int pos,
+ struct checkout *state)
+{
+ while (pos < active_nr &&
+ !strcmp(active_cache[pos]->name, ce->name)) {
+ if (ce_stage(active_cache[pos]) == stage)
+ return checkout_entry(active_cache[pos], state, NULL);
+ pos++;
+ }
+ if (stage == 2)
+ return error(_("path '%s' does not have our version"), ce->name);
+ else
+ return error(_("path '%s' does not have their version"), ce->name);
+}
+
+static int checkout_merged(int pos, struct checkout *state)
+{
+ struct cache_entry *ce = active_cache[pos];
+ const char *path = ce->name;
+ mmfile_t ancestor, ours, theirs;
+ int status;
+ unsigned char sha1[20];
+ mmbuffer_t result_buf;
+ unsigned char threeway[3][20];
+ unsigned mode = 0;
+
+ memset(threeway, 0, sizeof(threeway));
+ while (pos < active_nr) {
+ int stage;
+ stage = ce_stage(ce);
+ if (!stage || strcmp(path, ce->name))
+ break;
+ hashcpy(threeway[stage - 1], ce->sha1);
+ if (stage == 2)
+ mode = create_ce_mode(ce->ce_mode);
+ pos++;
+ ce = active_cache[pos];
+ }
+ if (is_null_sha1(threeway[1]) || is_null_sha1(threeway[2]))
+ return error(_("path '%s' does not have necessary versions"), path);
+
+ read_mmblob(&ancestor, threeway[0]);
+ read_mmblob(&ours, threeway[1]);
+ read_mmblob(&theirs, threeway[2]);
+
+ /*
+ * NEEDSWORK: re-create conflicts from merges with
+ * merge.renormalize set, too
+ */
+ status = ll_merge(&result_buf, path, &ancestor, "base",
+ &ours, "ours", &theirs, "theirs", NULL);
+ free(ancestor.ptr);
+ free(ours.ptr);
+ free(theirs.ptr);
+ if (status < 0 || !result_buf.ptr) {
+ free(result_buf.ptr);
+ return error(_("path '%s': cannot merge"), path);
+ }
+
+ /*
+ * NEEDSWORK:
+ * There is absolutely no reason to write this as a blob object
+ * and create a phony cache entry just to leak. This hack is
+ * primarily to get to the write_entry() machinery that massages
+ * the contents to work-tree format and writes out which only
+ * allows it for a cache entry. The code in write_entry() needs
+ * to be refactored to allow us to feed a <buffer, size, mode>
+ * instead of a cache entry. Such a refactoring would help
+ * merge_recursive as well (it also writes the merge result to the
+ * object database even when it may contain conflicts).
+ */
+ if (write_sha1_file(result_buf.ptr, result_buf.size,
+ blob_type, sha1))
+ die(_("Unable to add merge result for '%s'"), path);
+ ce = make_cache_entry(mode, sha1, path, 2, 0);
+ if (!ce)
+ die(_("make_cache_entry failed for path '%s'"), path);
+ status = checkout_entry(ce, state, NULL);
+ return status;
+}
+
+static int checkout_paths(const struct checkout_opts *opts,
+ const char *revision)
+{
+ int pos;
+ struct checkout state;
+ static char *ps_matched;
+ unsigned char rev[20];
+ int flag;
+ struct commit *head;
+ int errs = 0;
+ struct lock_file *lock_file;
+
+ if (opts->track != BRANCH_TRACK_UNSPECIFIED)
+ die(_("'%s' cannot be used with updating paths"), "--track");
+
+ if (opts->new_branch_log)
+ die(_("'%s' cannot be used with updating paths"), "-l");
+
+ if (opts->force && opts->patch_mode)
+ die(_("'%s' cannot be used with updating paths"), "-f");
+
+ if (opts->force_detach)
+ die(_("'%s' cannot be used with updating paths"), "--detach");
+
+ if (opts->merge && opts->patch_mode)
+ die(_("'%s' cannot be used with %s"), "--merge", "--patch");
+
+ if (opts->force && opts->merge)
+ die(_("'%s' cannot be used with %s"), "-f", "-m");
+
+ if (opts->new_branch)
+ die(_("Cannot update paths and switch to branch '%s' at the same time."),
+ opts->new_branch);
+
+ if (opts->patch_mode)
+ return run_add_interactive(revision, "--patch=checkout",
+ &opts->pathspec);
+
+ lock_file = xcalloc(1, sizeof(struct lock_file));
+
+ hold_locked_index(lock_file, 1);
+ if (read_cache_preload(&opts->pathspec) < 0)
+ return error(_("corrupt index file"));
+
+ if (opts->source_tree)
+ read_tree_some(opts->source_tree, &opts->pathspec);
+
+ ps_matched = xcalloc(1, opts->pathspec.nr);
+
+ /*
+ * Make sure all pathspecs participated in locating the paths
+ * to be checked out.
+ */
+ for (pos = 0; pos < active_nr; pos++) {
+ struct cache_entry *ce = active_cache[pos];
+ ce->ce_flags &= ~CE_MATCHED;
+ if (!opts->ignore_skipworktree && ce_skip_worktree(ce))
+ continue;
+ if (opts->source_tree && !(ce->ce_flags & CE_UPDATE))
+ /*
+ * "git checkout tree-ish -- path", but this entry
+ * is in the original index; it will not be checked
+ * out to the working tree and it does not matter
+ * if pathspec matched this entry. We will not do
+ * anything to this entry at all.
+ */
+ continue;
+ /*
+ * Either this entry came from the tree-ish we are
+ * checking the paths out of, or we are checking out
+ * of the index.
+ *
+ * If it comes from the tree-ish, we already know it
+ * matches the pathspec and could just stamp
+ * CE_MATCHED to it from update_some(). But we still
+ * need ps_matched and read_tree_recursive (and
+ * eventually tree_entry_interesting) cannot fill
+ * ps_matched yet. Once it can, we can avoid calling
+ * match_pathspec() for _all_ entries when
+ * opts->source_tree != NULL.
+ */
+ if (ce_path_match(ce, &opts->pathspec, ps_matched))
+ ce->ce_flags |= CE_MATCHED;
+ }
+
+ if (report_path_error(ps_matched, &opts->pathspec, opts->prefix)) {
+ free(ps_matched);
+ return 1;
+ }
+ free(ps_matched);
+
+ /* "checkout -m path" to recreate conflicted state */
+ if (opts->merge)
+ unmerge_marked_index(&the_index);
+
+ /* Any unmerged paths? */
+ for (pos = 0; pos < active_nr; pos++) {
+ const struct cache_entry *ce = active_cache[pos];
+ if (ce->ce_flags & CE_MATCHED) {
+ if (!ce_stage(ce))
+ continue;
+ if (opts->force) {
+ warning(_("path '%s' is unmerged"), ce->name);
+ } else if (opts->writeout_stage) {
+ errs |= check_stage(opts->writeout_stage, ce, pos);
+ } else if (opts->merge) {
+ errs |= check_stages((1<<2) | (1<<3), ce, pos);
+ } else {
+ errs = 1;
+ error(_("path '%s' is unmerged"), ce->name);
+ }
+ pos = skip_same_name(ce, pos) - 1;
+ }
+ }
+ if (errs)
+ return 1;
+
+ /* Now we are committed to check them out */
+ memset(&state, 0, sizeof(state));
+ state.force = 1;
+ state.refresh_cache = 1;
+ state.istate = &the_index;
+ for (pos = 0; pos < active_nr; pos++) {
+ struct cache_entry *ce = active_cache[pos];
+ if (ce->ce_flags & CE_MATCHED) {
+ if (!ce_stage(ce)) {
+ errs |= checkout_entry(ce, &state, NULL);
+ continue;
+ }
+ if (opts->writeout_stage)
+ errs |= checkout_stage(opts->writeout_stage, ce, pos, &state);
+ else if (opts->merge)
+ errs |= checkout_merged(pos, &state);
+ pos = skip_same_name(ce, pos) - 1;
+ }
+ }
+
+ if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
+ die(_("unable to write new index file"));
+
+ read_ref_full("HEAD", 0, rev, &flag);
+ head = lookup_commit_reference_gently(rev, 1);
+
+ errs |= post_checkout_hook(head, head, 0);
+ return errs;
+}
+
+static void show_local_changes(struct object *head,
+ const struct diff_options *opts)
+{
+ struct rev_info rev;
+ /* I think we want full paths, even if we're in a subdirectory. */
+ init_revisions(&rev, NULL);
+ rev.diffopt.flags = opts->flags;
+ rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS;
+ diff_setup_done(&rev.diffopt);
+ add_pending_object(&rev, head, NULL);
+ run_diff_index(&rev, 0);
+}
+
+static void describe_detached_head(const char *msg, struct commit *commit)
+{
+ struct strbuf sb = STRBUF_INIT;
+ if (!parse_commit(commit))
+ pp_commit_easy(CMIT_FMT_ONELINE, commit, &sb);
+ fprintf(stderr, "%s %s... %s\n", msg,
+ find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV), sb.buf);
+ strbuf_release(&sb);
+}
+
+static int reset_tree(struct tree *tree, const struct checkout_opts *o,
+ int worktree, int *writeout_error)
+{
+ struct unpack_trees_options opts;
+ struct tree_desc tree_desc;
+
+ memset(&opts, 0, sizeof(opts));
+ opts.head_idx = -1;
+ opts.update = worktree;
+ opts.skip_unmerged = !worktree;
+ opts.reset = 1;
+ opts.merge = 1;
+ opts.fn = oneway_merge;
+ opts.verbose_update = !o->quiet && isatty(2);
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+ parse_tree(tree);
+ init_tree_desc(&tree_desc, tree->buffer, tree->size);
+ switch (unpack_trees(1, &tree_desc, &opts)) {
+ case -2:
+ *writeout_error = 1;
+ /*
+ * We return 0 nevertheless, as the index is all right
+ * and more importantly we have made best efforts to
+ * update paths in the work tree, and we cannot revert
+ * them.
+ */
+ case 0:
+ return 0;
+ default:
+ return 128;
+ }
+}
+
+struct branch_info {
+ const char *name; /* The short name used */
+ const char *path; /* The full name of a real branch */
+ struct commit *commit; /* The named commit */
+};
+
+static void setup_branch_path(struct branch_info *branch)
+{
+ struct strbuf buf = STRBUF_INIT;
+
+ strbuf_branchname(&buf, branch->name);
+ if (strcmp(buf.buf, branch->name))
+ branch->name = xstrdup(buf.buf);
+ strbuf_splice(&buf, 0, 0, "refs/heads/", 11);
+ branch->path = strbuf_detach(&buf, NULL);
+}
+
+static int merge_working_tree(const struct checkout_opts *opts,
+ struct branch_info *old,
+ struct branch_info *new,
+ int *writeout_error)
+{
+ int ret;
+ struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
+
+ hold_locked_index(lock_file, 1);
+ if (read_cache_preload(NULL) < 0)
+ return error(_("corrupt index file"));
+
+ resolve_undo_clear();
+ if (opts->force) {
+ ret = reset_tree(new->commit->tree, opts, 1, writeout_error);
+ if (ret)
+ return ret;
+ } else {
+ struct tree_desc trees[2];
+ struct tree *tree;
+ struct unpack_trees_options topts;
+
+ memset(&topts, 0, sizeof(topts));
+ topts.head_idx = -1;
+ topts.src_index = &the_index;
+ topts.dst_index = &the_index;
+
+ setup_unpack_trees_porcelain(&topts, "checkout");
+
+ refresh_cache(REFRESH_QUIET);
+
+ if (unmerged_cache()) {
+ error(_("you need to resolve your current index first"));
+ return 1;
+ }
+
+ /* 2-way merge to the new branch */
+ topts.initial_checkout = is_cache_unborn();
+ topts.update = 1;
+ topts.merge = 1;
+ topts.gently = opts->merge && old->commit;
+ topts.verbose_update = !opts->quiet && isatty(2);
+ topts.fn = twoway_merge;
+ if (opts->overwrite_ignore) {
+ topts.dir = xcalloc(1, sizeof(*topts.dir));
+ topts.dir->flags |= DIR_SHOW_IGNORED;
+ setup_standard_excludes(topts.dir);
+ }
+ tree = parse_tree_indirect(old->commit ?
+ old->commit->object.sha1 :
+ EMPTY_TREE_SHA1_BIN);
+ init_tree_desc(&trees[0], tree->buffer, tree->size);
+ tree = parse_tree_indirect(new->commit->object.sha1);
+ init_tree_desc(&trees[1], tree->buffer, tree->size);
+
+ ret = unpack_trees(2, trees, &topts);
+ if (ret == -1) {
+ /*
+ * Unpack couldn't do a trivial merge; either
+ * give up or do a real merge, depending on
+ * whether the merge flag was used.
+ */
+ struct tree *result;
+ struct tree *work;
+ struct merge_options o;
+ if (!opts->merge)
+ return 1;
+
+ /*
+ * Without old->commit, the below is the same as
+ * the two-tree unpack we already tried and failed.
+ */
+ if (!old->commit)
+ return 1;
+
+ /* Do more real merge */
+
+ /*
+ * We update the index fully, then write the
+ * tree from the index, then merge the new
+ * branch with the current tree, with the old
+ * branch as the base. Then we reset the index
+ * (but not the working tree) to the new
+ * branch, leaving the working tree as the
+ * merged version, but skipping unmerged
+ * entries in the index.
+ */
+
+ add_files_to_cache(NULL, NULL, 0);
+ /*
+ * NEEDSWORK: carrying over local changes
+ * when branches have different end-of-line
+ * normalization (or clean+smudge rules) is
+ * a pain; plumb in an option to set
+ * o.renormalize?
+ */
+ init_merge_options(&o);
+ o.verbosity = 0;
+ work = write_tree_from_memory(&o);
+
+ ret = reset_tree(new->commit->tree, opts, 1,
+ writeout_error);
+ if (ret)
+ return ret;
+ o.ancestor = old->name;
+ o.branch1 = new->name;
+ o.branch2 = "local";
+ merge_trees(&o, new->commit->tree, work,
+ old->commit->tree, &result);
+ ret = reset_tree(new->commit->tree, opts, 0,
+ writeout_error);
+ if (ret)
+ return ret;
+ }
+ }
+
+ if (!active_cache_tree)
+ active_cache_tree = cache_tree();
+
+ if (!cache_tree_fully_valid(active_cache_tree))
+ cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);
+
+ if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
+ die(_("unable to write new index file"));
+
+ if (!opts->force && !opts->quiet)
+ show_local_changes(&new->commit->object, &opts->diff_options);
+
+ return 0;
+}
+
+static void report_tracking(struct branch_info *new)
+{
+ struct strbuf sb = STRBUF_INIT;
+ struct branch *branch = branch_get(new->name);
+
+ if (!format_tracking_info(branch, &sb))
+ return;
+ fputs(sb.buf, stdout);
+ strbuf_release(&sb);
+}
+
+static void update_refs_for_switch(const struct checkout_opts *opts,
+ struct branch_info *old,
+ struct branch_info *new)
+{
+ struct strbuf msg = STRBUF_INIT;
+ const char *old_desc, *reflog_msg;
+ if (opts->new_branch) {
+ if (opts->new_orphan_branch) {
+ if (opts->new_branch_log && !log_all_ref_updates) {
+ int temp;
+ char log_file[PATH_MAX];
+ char *ref_name = mkpath("refs/heads/%s", opts->new_orphan_branch);
+
+ temp = log_all_ref_updates;
+ log_all_ref_updates = 1;
+ if (log_ref_setup(ref_name, log_file, sizeof(log_file))) {
+ fprintf(stderr, _("Can not do reflog for '%s'\n"),
+ opts->new_orphan_branch);
+ log_all_ref_updates = temp;
+ return;
+ }
+ log_all_ref_updates = temp;
+ }
+ }
+ else
+ create_branch(old->name, opts->new_branch, new->name,
+ opts->new_branch_force ? 1 : 0,
+ opts->new_branch_log,
+ opts->new_branch_force ? 1 : 0,
+ opts->quiet,
+ opts->track);
+ new->name = opts->new_branch;
+ setup_branch_path(new);
+ }
+
+ old_desc = old->name;
+ if (!old_desc && old->commit)
+ old_desc = sha1_to_hex(old->commit->object.sha1);
+
+ reflog_msg = getenv("GIT_REFLOG_ACTION");
+ if (!reflog_msg)
+ strbuf_addf(&msg, "checkout: moving from %s to %s",
+ old_desc ? old_desc : "(invalid)", new->name);
+ else
+ strbuf_insert(&msg, 0, reflog_msg, strlen(reflog_msg));
+
+ if (!strcmp(new->name, "HEAD") && !new->path && !opts->force_detach) {
+ /* Nothing to do. */
+ } else if (opts->force_detach || !new->path) { /* No longer on any branch. */
+ update_ref(msg.buf, "HEAD", new->commit->object.sha1, NULL,
+ REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+ if (!opts->quiet) {
+ if (old->path && advice_detached_head)
+ detach_advice(new->name);
+ describe_detached_head(_("HEAD is now at"), new->commit);
+ }
+ } else if (new->path) { /* Switch branches. */
+ create_symref("HEAD", new->path, msg.buf);
+ if (!opts->quiet) {
+ if (old->path && !strcmp(new->path, old->path)) {
+ if (opts->new_branch_force)
+ fprintf(stderr, _("Reset branch '%s'\n"),
+ new->name);
+ else
+ fprintf(stderr, _("Already on '%s'\n"),
+ new->name);
+ } else if (opts->new_branch) {
+ if (opts->branch_exists)
+ fprintf(stderr, _("Switched to and reset branch '%s'\n"), new->name);
+ else
+ fprintf(stderr, _("Switched to a new branch '%s'\n"), new->name);
+ } else {
+ fprintf(stderr, _("Switched to branch '%s'\n"),
+ new->name);
+ }
+ }
+ if (old->path && old->name) {
+ if (!ref_exists(old->path) && reflog_exists(old->path))
+ delete_reflog(old->path);
+ }
+ }
+ remove_branch_state();
+ strbuf_release(&msg);
+ if (!opts->quiet &&
+ (new->path || (!opts->force_detach && !strcmp(new->name, "HEAD"))))
+ report_tracking(new);
+}
+
+static int add_pending_uninteresting_ref(const char *refname,
+ const unsigned char *sha1,
+ int flags, void *cb_data)
+{
+ add_pending_sha1(cb_data, refname, sha1, UNINTERESTING);
+ return 0;
+}
+
+static void describe_one_orphan(struct strbuf *sb, struct commit *commit)
+{
+ strbuf_addstr(sb, " ");
+ strbuf_addstr(sb,
+ find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV));
+ strbuf_addch(sb, ' ');
+ if (!parse_commit(commit))
+ pp_commit_easy(CMIT_FMT_ONELINE, commit, sb);
+ strbuf_addch(sb, '\n');
+}
+
+#define ORPHAN_CUTOFF 4
+static void suggest_reattach(struct commit *commit, struct rev_info *revs)
+{
+ struct commit *c, *last = NULL;
+ struct strbuf sb = STRBUF_INIT;
+ int lost = 0;
+ while ((c = get_revision(revs)) != NULL) {
+ if (lost < ORPHAN_CUTOFF)
+ describe_one_orphan(&sb, c);
+ last = c;
+ lost++;
+ }
+ if (ORPHAN_CUTOFF < lost) {
+ int more = lost - ORPHAN_CUTOFF;
+ if (more == 1)
+ describe_one_orphan(&sb, last);
+ else
+ strbuf_addf(&sb, _(" ... and %d more.\n"), more);
+ }
+
+ fprintf(stderr,
+ Q_(
+ /* The singular version */
+ "Warning: you are leaving %d commit behind, "
+ "not connected to\n"
+ "any of your branches:\n\n"
+ "%s\n",
+ /* The plural version */
+ "Warning: you are leaving %d commits behind, "
+ "not connected to\n"
+ "any of your branches:\n\n"
+ "%s\n",
+ /* Give ngettext() the count */
+ lost),
+ lost,
+ sb.buf);
+ strbuf_release(&sb);
+
+ if (advice_detached_head)
+ fprintf(stderr,
+ _(
+ "If you want to keep them by creating a new branch, "
+ "this may be a good time\nto do so with:\n\n"
+ " git branch <new-branch-name> %s\n\n"),
+ find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV));
+}
+
+/*
+ * We are about to leave commit that was at the tip of a detached
+ * HEAD. If it is not reachable from any ref, this is the last chance
+ * for the user to do so without resorting to reflog.
+ */
+static void orphaned_commit_warning(struct commit *old, struct commit *new)
+{
+ struct rev_info revs;
+ struct object *object = &old->object;
+ struct object_array refs;
+
+ init_revisions(&revs, NULL);
+ setup_revisions(0, NULL, &revs, NULL);
+
+ object->flags &= ~UNINTERESTING;
+ add_pending_object(&revs, object, sha1_to_hex(object->sha1));
+
+ for_each_ref(add_pending_uninteresting_ref, &revs);
+ add_pending_sha1(&revs, "HEAD", new->object.sha1, UNINTERESTING);
+
+ refs = revs.pending;
+ revs.leak_pending = 1;
+
+ if (prepare_revision_walk(&revs))
+ die(_("internal error in revision walk"));
+ if (!(old->object.flags & UNINTERESTING))
+ suggest_reattach(old, &revs);
+ else
+ describe_detached_head(_("Previous HEAD position was"), old);
+
+ clear_commit_marks_for_object_array(&refs, ALL_REV_FLAGS);
+ free(refs.objects);
+}
+
+static int switch_branches(const struct checkout_opts *opts,
+ struct branch_info *new)
+{
+ int ret = 0;
+ struct branch_info old;
+ void *path_to_free;
+ unsigned char rev[20];
+ int flag, writeout_error = 0;
+ memset(&old, 0, sizeof(old));
+ old.path = path_to_free = resolve_refdup("HEAD", 0, rev, &flag);
+ old.commit = lookup_commit_reference_gently(rev, 1);
+ if (!(flag & REF_ISSYMREF))
+ old.path = NULL;
+
+ if (old.path)
+ skip_prefix(old.path, "refs/heads/", &old.name);
+
+ if (!new->name) {
+ new->name = "HEAD";
+ new->commit = old.commit;
+ if (!new->commit)
+ die(_("You are on a branch yet to be born"));
+ parse_commit_or_die(new->commit);
+ }
+
+ ret = merge_working_tree(opts, &old, new, &writeout_error);
+ if (ret) {
+ free(path_to_free);
+ return ret;
+ }
+
+ if (!opts->quiet && !old.path && old.commit && new->commit != old.commit)
+ orphaned_commit_warning(old.commit, new->commit);
+
+ update_refs_for_switch(opts, &old, new);
+
+ ret = post_checkout_hook(old.commit, new->commit, 1);
+ free(path_to_free);
+ return ret || writeout_error;
+}
+
+static int git_checkout_config(const char *var, const char *value, void *cb)
+{
+ if (!strcmp(var, "diff.ignoresubmodules")) {
+ struct checkout_opts *opts = cb;
+ handle_ignore_submodules_arg(&opts->diff_options, value);
+ return 0;
+ }
+
+ if (starts_with(var, "submodule."))
+ return parse_submodule_config_option(var, value);
+
+ return git_xmerge_config(var, value, NULL);
+}
+
+struct tracking_name_data {
+ /* const */ char *src_ref;
+ char *dst_ref;
+ unsigned char *dst_sha1;
+ int unique;
+};
+
+static int check_tracking_name(struct remote *remote, void *cb_data)
+{
+ struct tracking_name_data *cb = cb_data;
+ struct refspec query;
+ memset(&query, 0, sizeof(struct refspec));
+ query.src = cb->src_ref;
+ if (remote_find_tracking(remote, &query) ||
+ get_sha1(query.dst, cb->dst_sha1)) {
+ free(query.dst);
+ return 0;
+ }
+ if (cb->dst_ref) {
+ free(query.dst);
+ cb->unique = 0;
+ return 0;
+ }
+ cb->dst_ref = query.dst;
+ return 0;
+}
+
+static const char *unique_tracking_name(const char *name, unsigned char *sha1)
+{
+ struct tracking_name_data cb_data = { NULL, NULL, NULL, 1 };
+ char src_ref[PATH_MAX];
+ snprintf(src_ref, PATH_MAX, "refs/heads/%s", name);
+ cb_data.src_ref = src_ref;
+ cb_data.dst_sha1 = sha1;
+ for_each_remote(check_tracking_name, &cb_data);
+ if (cb_data.unique)
+ return cb_data.dst_ref;
+ free(cb_data.dst_ref);
+ return NULL;
+}
+
+static int parse_branchname_arg(int argc, const char **argv,
+ int dwim_new_local_branch_ok,
+ struct branch_info *new,
+ struct tree **source_tree,
+ unsigned char rev[20],
+ const char **new_branch)
+{
+ int argcount = 0;
+ unsigned char branch_rev[20];
+ const char *arg;
+ int dash_dash_pos;
+ int has_dash_dash = 0;
+ int i;
+
+ /*
+ * case 1: git checkout <ref> -- [<paths>]
+ *
+ * <ref> must be a valid tree, everything after the '--' must be
+ * a path.
+ *
+ * case 2: git checkout -- [<paths>]
+ *
+ * everything after the '--' must be paths.
+ *
+ * case 3: git checkout <something> [--]
+ *
+ * (a) If <something> is a commit, that is to
+ * switch to the branch or detach HEAD at it. As a special case,
+ * if <something> is A...B (missing A or B means HEAD but you can
+ * omit at most one side), and if there is a unique merge base
+ * between A and B, A...B names that merge base.
+ *
+ * (b) If <something> is _not_ a commit, either "--" is present
+ * or <something> is not a path, no -t or -b was given, and
+ * and there is a tracking branch whose name is <something>
+ * in one and only one remote, then this is a short-hand to
+ * fork local <something> from that remote-tracking branch.
+ *
+ * (c) Otherwise, if "--" is present, treat it like case (1).
+ *
+ * (d) Otherwise :
+ * - if it's a reference, treat it like case (1)
+ * - else if it's a path, treat it like case (2)
+ * - else: fail.
+ *
+ * case 4: git checkout <something> <paths>
+ *
+ * The first argument must not be ambiguous.
+ * - If it's *only* a reference, treat it like case (1).
+ * - If it's only a path, treat it like case (2).
+ * - else: fail.
+ *
+ */
+ if (!argc)
+ return 0;
+
+ arg = argv[0];
+ dash_dash_pos = -1;
+ for (i = 0; i < argc; i++) {
+ if (!strcmp(argv[i], "--")) {
+ dash_dash_pos = i;
+ break;
+ }
+ }
+ if (dash_dash_pos == 0)
+ return 1; /* case (2) */
+ else if (dash_dash_pos == 1)
+ has_dash_dash = 1; /* case (3) or (1) */
+ else if (dash_dash_pos >= 2)
+ die(_("only one reference expected, %d given."), dash_dash_pos);
+
+ if (!strcmp(arg, "-"))
+ arg = "@{-1}";
+
+ if (get_sha1_mb(arg, rev)) {
+ /*
+ * Either case (3) or (4), with <something> not being
+ * a commit, or an attempt to use case (1) with an
+ * invalid ref.
+ *
+ * It's likely an error, but we need to find out if
+ * we should auto-create the branch, case (3).(b).
+ */
+ int recover_with_dwim = dwim_new_local_branch_ok;
+
+ if (check_filename(NULL, arg) && !has_dash_dash)
+ recover_with_dwim = 0;
+ /*
+ * Accept "git checkout foo" and "git checkout foo --"
+ * as candidates for dwim.
+ */
+ if (!(argc == 1 && !has_dash_dash) &&
+ !(argc == 2 && has_dash_dash))
+ recover_with_dwim = 0;
+
+ if (recover_with_dwim) {
+ const char *remote = unique_tracking_name(arg, rev);
+ if (remote) {
+ *new_branch = arg;
+ arg = remote;
+ /* DWIMmed to create local branch, case (3).(b) */
+ } else {
+ recover_with_dwim = 0;
+ }
+ }
+
+ if (!recover_with_dwim) {
+ if (has_dash_dash)
+ die(_("invalid reference: %s"), arg);
+ return argcount;
+ }
+ }
+
+ /* we can't end up being in (2) anymore, eat the argument */
+ argcount++;
+ argv++;
+ argc--;
+
+ new->name = arg;
+ setup_branch_path(new);
+
+ if (!check_refname_format(new->path, 0) &&
+ !read_ref(new->path, branch_rev))
+ hashcpy(rev, branch_rev);
+ else
+ new->path = NULL; /* not an existing branch */
+
+ new->commit = lookup_commit_reference_gently(rev, 1);
+ if (!new->commit) {
+ /* not a commit */
+ *source_tree = parse_tree_indirect(rev);
+ } else {
+ parse_commit_or_die(new->commit);
+ *source_tree = new->commit->tree;
+ }
+
+ if (!*source_tree) /* case (1): want a tree */
+ die(_("reference is not a tree: %s"), arg);
+ if (!has_dash_dash) {/* case (3).(d) -> (1) */
+ /*
+ * Do not complain the most common case
+ * git checkout branch
+ * even if there happen to be a file called 'branch';
+ * it would be extremely annoying.
+ */
+ if (argc)
+ verify_non_filename(NULL, arg);
+ } else {
+ argcount++;
+ argv++;
+ argc--;
+ }
+
+ return argcount;
+}
+
+static int switch_unborn_to_new_branch(const struct checkout_opts *opts)
+{
+ int status;
+ struct strbuf branch_ref = STRBUF_INIT;
+
+ if (!opts->new_branch)
+ die(_("You are on a branch yet to be born"));
+ strbuf_addf(&branch_ref, "refs/heads/%s", opts->new_branch);
+ status = create_symref("HEAD", branch_ref.buf, "checkout -b");
+ strbuf_release(&branch_ref);
+ if (!opts->quiet)
+ fprintf(stderr, _("Switched to a new branch '%s'\n"),
+ opts->new_branch);
+ return status;
+}
+
+static int checkout_branch(struct checkout_opts *opts,
+ struct branch_info *new)
+{
+ if (opts->pathspec.nr)
+ die(_("paths cannot be used with switching branches"));
+
+ if (opts->patch_mode)
+ die(_("'%s' cannot be used with switching branches"),
+ "--patch");
+
+ if (opts->writeout_stage)
+ die(_("'%s' cannot be used with switching branches"),
+ "--ours/--theirs");
+
+ if (opts->force && opts->merge)
+ die(_("'%s' cannot be used with '%s'"), "-f", "-m");
+
+ if (opts->force_detach && opts->new_branch)
+ die(_("'%s' cannot be used with '%s'"),
+ "--detach", "-b/-B/--orphan");
+
+ if (opts->new_orphan_branch) {
+ if (opts->track != BRANCH_TRACK_UNSPECIFIED)
+ die(_("'%s' cannot be used with '%s'"), "--orphan", "-t");
+ } else if (opts->force_detach) {
+ if (opts->track != BRANCH_TRACK_UNSPECIFIED)
+ die(_("'%s' cannot be used with '%s'"), "--detach", "-t");
+ } else if (opts->track == BRANCH_TRACK_UNSPECIFIED)
+ opts->track = git_branch_track;
+
+ if (new->name && !new->commit)
+ die(_("Cannot switch branch to a non-commit '%s'"),
+ new->name);
+
+ if (!new->commit && opts->new_branch) {
+ unsigned char rev[20];
+ int flag;
+
+ if (!read_ref_full("HEAD", 0, rev, &flag) &&
+ (flag & REF_ISSYMREF) && is_null_sha1(rev))
+ return switch_unborn_to_new_branch(opts);
+ }
+ return switch_branches(opts, new);
+}
+
+int cmd_checkout(int argc, const char **argv, const char *prefix)
+{
+ struct checkout_opts opts;
+ struct branch_info new;
+ char *conflict_style = NULL;
+ int dwim_new_local_branch = 1;
+ struct option options[] = {
+ OPT__QUIET(&opts.quiet, N_("suppress progress reporting")),
+ OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
+ N_("create and checkout a new branch")),
+ OPT_STRING('B', NULL, &opts.new_branch_force, N_("branch"),
+ N_("create/reset and checkout a branch")),
+ OPT_BOOL('l', NULL, &opts.new_branch_log, N_("create reflog for new branch")),
+ OPT_BOOL(0, "detach", &opts.force_detach, N_("detach the HEAD at named commit")),
+ OPT_SET_INT('t', "track", &opts.track, N_("set upstream info for new branch"),
+ BRANCH_TRACK_EXPLICIT),
+ OPT_STRING(0, "orphan", &opts.new_orphan_branch, N_("new-branch"), N_("new unparented branch")),
+ OPT_SET_INT('2', "ours", &opts.writeout_stage, N_("checkout our version for unmerged files"),
+ 2),
+ OPT_SET_INT('3', "theirs", &opts.writeout_stage, N_("checkout their version for unmerged files"),
+ 3),
+ OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)")),
+ OPT_BOOL('m', "merge", &opts.merge, N_("perform a 3-way merge with the new branch")),
+ OPT_BOOL(0, "overwrite-ignore", &opts.overwrite_ignore, N_("update ignored files (default)")),
+ OPT_STRING(0, "conflict", &conflict_style, N_("style"),
+ N_("conflict style (merge or diff3)")),
+ OPT_BOOL('p', "patch", &opts.patch_mode, N_("select hunks interactively")),
+ OPT_BOOL(0, "ignore-skip-worktree-bits", &opts.ignore_skipworktree,
+ N_("do not limit pathspecs to sparse entries only")),
+ OPT_HIDDEN_BOOL(0, "guess", &dwim_new_local_branch,
+ N_("second guess 'git checkout <no-such-branch>'")),
+ OPT_END(),
+ };
+
+ memset(&opts, 0, sizeof(opts));
+ memset(&new, 0, sizeof(new));
+ opts.overwrite_ignore = 1;
+ opts.prefix = prefix;
+
+ gitmodules_config();
+ git_config(git_checkout_config, &opts);
+
+ opts.track = BRANCH_TRACK_UNSPECIFIED;
+
+ argc = parse_options(argc, argv, prefix, options, checkout_usage,
+ PARSE_OPT_KEEP_DASHDASH);
+
+ if (conflict_style) {
+ opts.merge = 1; /* implied */
+ git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
+ }
+
+ if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1)
+ die(_("-b, -B and --orphan are mutually exclusive"));
+
+ /*
+ * From here on, new_branch will contain the branch to be checked out,
+ * and new_branch_force and new_orphan_branch will tell us which one of
+ * -b/-B/--orphan is being used.
+ */
+ if (opts.new_branch_force)
+ opts.new_branch = opts.new_branch_force;
+
+ if (opts.new_orphan_branch)
+ opts.new_branch = opts.new_orphan_branch;
+
+ /* --track without -b/-B/--orphan should DWIM */
+ if (opts.track != BRANCH_TRACK_UNSPECIFIED && !opts.new_branch) {
+ const char *argv0 = argv[0];
+ if (!argc || !strcmp(argv0, "--"))
+ die (_("--track needs a branch name"));
+ skip_prefix(argv0, "refs/", &argv0);
+ skip_prefix(argv0, "remotes/", &argv0);
+ argv0 = strchr(argv0, '/');
+ if (!argv0 || !argv0[1])
+ die (_("Missing branch name; try -b"));
+ opts.new_branch = argv0 + 1;
+ }
+
+ /*
+ * Extract branch name from command line arguments, so
+ * all that is left is pathspecs.
+ *
+ * Handle
+ *
+ * 1) git checkout <tree> -- [<paths>]
+ * 2) git checkout -- [<paths>]
+ * 3) git checkout <something> [<paths>]
+ *
+ * including "last branch" syntax and DWIM-ery for names of
+ * remote branches, erroring out for invalid or ambiguous cases.
+ */
+ if (argc) {
+ unsigned char rev[20];
+ int dwim_ok =
+ !opts.patch_mode &&
+ dwim_new_local_branch &&
+ opts.track == BRANCH_TRACK_UNSPECIFIED &&
+ !opts.new_branch;
+ int n = parse_branchname_arg(argc, argv, dwim_ok,
+ &new, &opts.source_tree,
+ rev, &opts.new_branch);
+ argv += n;
+ argc -= n;
+ }
+
+ if (argc) {
+ parse_pathspec(&opts.pathspec, 0,
+ opts.patch_mode ? PATHSPEC_PREFIX_ORIGIN : 0,
+ prefix, argv);
+
+ if (!opts.pathspec.nr)
+ die(_("invalid path specification"));
+
+ /*
+ * Try to give more helpful suggestion.
+ * new_branch && argc > 1 will be caught later.
+ */
+ if (opts.new_branch && argc == 1)
+ die(_("Cannot update paths and switch to branch '%s' at the same time.\n"
+ "Did you intend to checkout '%s' which can not be resolved as commit?"),
+ opts.new_branch, argv[0]);
+
+ if (opts.force_detach)
+ die(_("git checkout: --detach does not take a path argument '%s'"),
+ argv[0]);
+
+ if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge)
+ die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\n"
+ "checking out of the index."));
+ }
+
+ if (opts.new_branch) {
+ struct strbuf buf = STRBUF_INIT;
+
+ opts.branch_exists =
+ validate_new_branchname(opts.new_branch, &buf,
+ !!opts.new_branch_force,
+ !!opts.new_branch_force);
+
+ strbuf_release(&buf);
+ }
+
+ if (opts.patch_mode || opts.pathspec.nr)
+ return checkout_paths(&opts, new.name);
+ else
+ return checkout_branch(&opts, &new);
+}
diff --git a/builtin/clean.c b/builtin/clean.c
new file mode 100644
index 0000000..6dcb72e
--- /dev/null
+++ b/builtin/clean.c
@@ -0,0 +1,1004 @@
+/*
+ * "git clean" builtin command
+ *
+ * Copyright (C) 2007 Shawn Bohrer
+ *
+ * Based on git-clean.sh by Pavel Roskin
+ */
+
+#include "builtin.h"
+#include "cache.h"
+#include "dir.h"
+#include "parse-options.h"
+#include "refs.h"
+#include "string-list.h"
+#include "quote.h"
+#include "column.h"
+#include "color.h"
+#include "pathspec.h"
+
+static int force = -1; /* unset */
+static int interactive;
+static struct string_list del_list = STRING_LIST_INIT_DUP;
+static unsigned int colopts;
+
+static const char *const builtin_clean_usage[] = {
+ N_("git clean [-d] [-f] [-i] [-n] [-q] [-e <pattern>] [-x | -X] [--] <paths>..."),
+ NULL
+};
+
+static const char *msg_remove = N_("Removing %s\n");
+static const char *msg_would_remove = N_("Would remove %s\n");
+static const char *msg_skip_git_dir = N_("Skipping repository %s\n");
+static const char *msg_would_skip_git_dir = N_("Would skip repository %s\n");
+static const char *msg_warn_remove_failed = N_("failed to remove %s");
+
+static int clean_use_color = -1;
+static char clean_colors[][COLOR_MAXLEN] = {
+ GIT_COLOR_RESET,
+ GIT_COLOR_NORMAL, /* PLAIN */
+ GIT_COLOR_BOLD_BLUE, /* PROMPT */
+ GIT_COLOR_BOLD, /* HEADER */
+ GIT_COLOR_BOLD_RED, /* HELP */
+ GIT_COLOR_BOLD_RED, /* ERROR */
+};
+enum color_clean {
+ CLEAN_COLOR_RESET = 0,
+ CLEAN_COLOR_PLAIN = 1,
+ CLEAN_COLOR_PROMPT = 2,
+ CLEAN_COLOR_HEADER = 3,
+ CLEAN_COLOR_HELP = 4,
+ CLEAN_COLOR_ERROR = 5
+};
+
+#define MENU_OPTS_SINGLETON 01
+#define MENU_OPTS_IMMEDIATE 02
+#define MENU_OPTS_LIST_ONLY 04
+
+struct menu_opts {
+ const char *header;
+ const char *prompt;
+ int flags;
+};
+
+#define MENU_RETURN_NO_LOOP 10
+
+struct menu_item {
+ char hotkey;
+ const char *title;
+ int selected;
+ int (*fn)(void);
+};
+
+enum menu_stuff_type {
+ MENU_STUFF_TYPE_STRING_LIST = 1,
+ MENU_STUFF_TYPE_MENU_ITEM
+};
+
+struct menu_stuff {
+ enum menu_stuff_type type;
+ int nr;
+ void *stuff;
+};
+
+static int parse_clean_color_slot(const char *var)
+{
+ if (!strcasecmp(var, "reset"))
+ return CLEAN_COLOR_RESET;
+ if (!strcasecmp(var, "plain"))
+ return CLEAN_COLOR_PLAIN;
+ if (!strcasecmp(var, "prompt"))
+ return CLEAN_COLOR_PROMPT;
+ if (!strcasecmp(var, "header"))
+ return CLEAN_COLOR_HEADER;
+ if (!strcasecmp(var, "help"))
+ return CLEAN_COLOR_HELP;
+ if (!strcasecmp(var, "error"))
+ return CLEAN_COLOR_ERROR;
+ return -1;
+}
+
+static int git_clean_config(const char *var, const char *value, void *cb)
+{
+ const char *slot_name;
+
+ if (starts_with(var, "column."))
+ return git_column_config(var, value, "clean", &colopts);
+
+ /* honors the color.interactive* config variables which also
+ applied in git-add--interactive and git-stash */
+ if (!strcmp(var, "color.interactive")) {
+ clean_use_color = git_config_colorbool(var, value);
+ return 0;
+ }
+ if (skip_prefix(var, "color.interactive.", &slot_name)) {
+ int slot = parse_clean_color_slot(slot_name);
+ if (slot < 0)
+ return 0;
+ if (!value)
+ return config_error_nonbool(var);
+ return color_parse(value, clean_colors[slot]);
+ }
+
+ if (!strcmp(var, "clean.requireforce")) {
+ force = !git_config_bool(var, value);
+ return 0;
+ }
+
+ /* inspect the color.ui config variable and others */
+ return git_color_default_config(var, value, cb);
+}
+
+static const char *clean_get_color(enum color_clean ix)
+{
+ if (want_color(clean_use_color))
+ return clean_colors[ix];
+ return "";
+}
+
+static void clean_print_color(enum color_clean ix)
+{
+ printf("%s", clean_get_color(ix));
+}
+
+static int exclude_cb(const struct option *opt, const char *arg, int unset)
+{
+ struct string_list *exclude_list = opt->value;
+ string_list_append(exclude_list, arg);
+ return 0;
+}
+
+static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
+ int dry_run, int quiet, int *dir_gone)
+{
+ DIR *dir;
+ struct strbuf quoted = STRBUF_INIT;
+ struct dirent *e;
+ int res = 0, ret = 0, gone = 1, original_len = path->len, len;
+ unsigned char submodule_head[20];
+ struct string_list dels = STRING_LIST_INIT_DUP;
+
+ *dir_gone = 1;
+
+ if ((force_flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
+ !resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
+ if (!quiet) {
+ quote_path_relative(path->buf, prefix, &quoted);
+ printf(dry_run ? _(msg_would_skip_git_dir) : _(msg_skip_git_dir),
+ quoted.buf);
+ }
+
+ *dir_gone = 0;
+ return 0;
+ }
+
+ dir = opendir(path->buf);
+ if (!dir) {
+ /* an empty dir could be removed even if it is unreadble */
+ res = dry_run ? 0 : rmdir(path->buf);
+ if (res) {
+ quote_path_relative(path->buf, prefix, &quoted);
+ warning(_(msg_warn_remove_failed), quoted.buf);
+ *dir_gone = 0;
+ }
+ return res;
+ }
+
+ if (path->buf[original_len - 1] != '/')
+ strbuf_addch(path, '/');
+
+ len = path->len;
+ while ((e = readdir(dir)) != NULL) {
+ struct stat st;
+ if (is_dot_or_dotdot(e->d_name))
+ continue;
+
+ strbuf_setlen(path, len);
+ strbuf_addstr(path, e->d_name);
+ if (lstat(path->buf, &st))
+ ; /* fall thru */
+ else if (S_ISDIR(st.st_mode)) {
+ if (remove_dirs(path, prefix, force_flag, dry_run, quiet, &gone))
+ ret = 1;
+ if (gone) {
+ quote_path_relative(path->buf, prefix, &quoted);
+ string_list_append(&dels, quoted.buf);
+ } else
+ *dir_gone = 0;
+ continue;
+ } else {
+ res = dry_run ? 0 : unlink(path->buf);
+ if (!res) {
+ quote_path_relative(path->buf, prefix, &quoted);
+ string_list_append(&dels, quoted.buf);
+ } else {
+ quote_path_relative(path->buf, prefix, &quoted);
+ warning(_(msg_warn_remove_failed), quoted.buf);
+ *dir_gone = 0;
+ ret = 1;
+ }
+ continue;
+ }
+
+ /* path too long, stat fails, or non-directory still exists */
+ *dir_gone = 0;
+ ret = 1;
+ break;
+ }
+ closedir(dir);
+
+ strbuf_setlen(path, original_len);
+
+ if (*dir_gone) {
+ res = dry_run ? 0 : rmdir(path->buf);
+ if (!res)
+ *dir_gone = 1;
+ else {
+ quote_path_relative(path->buf, prefix, &quoted);
+ warning(_(msg_warn_remove_failed), quoted.buf);
+ *dir_gone = 0;
+ ret = 1;
+ }
+ }
+
+ if (!*dir_gone && !quiet) {
+ int i;
+ for (i = 0; i < dels.nr; i++)
+ printf(dry_run ? _(msg_would_remove) : _(msg_remove), dels.items[i].string);
+ }
+ string_list_clear(&dels, 0);
+ return ret;
+}
+
+static void pretty_print_dels(void)
+{
+ struct string_list list = STRING_LIST_INIT_DUP;
+ struct string_list_item *item;
+ struct strbuf buf = STRBUF_INIT;
+ const char *qname;
+ struct column_options copts;
+
+ for_each_string_list_item(item, &del_list) {
+ qname = quote_path_relative(item->string, NULL, &buf);
+ string_list_append(&list, qname);
+ }
+
+ /*
+ * always enable column display, we only consult column.*
+ * about layout strategy and stuff
+ */
+ colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED;
+ memset(&copts, 0, sizeof(copts));
+ copts.indent = " ";
+ copts.padding = 2;
+ print_columns(&list, colopts, &copts);
+ strbuf_release(&buf);
+ string_list_clear(&list, 0);
+}
+
+static void pretty_print_menus(struct string_list *menu_list)
+{
+ unsigned int local_colopts = 0;
+ struct column_options copts;
+
+ local_colopts = COL_ENABLED | COL_ROW;
+ memset(&copts, 0, sizeof(copts));
+ copts.indent = " ";
+ copts.padding = 2;
+ print_columns(menu_list, local_colopts, &copts);
+}
+
+static void prompt_help_cmd(int singleton)
+{
+ clean_print_color(CLEAN_COLOR_HELP);
+ printf_ln(singleton ?
+ _("Prompt help:\n"
+ "1 - select a numbered item\n"
+ "foo - select item based on unique prefix\n"
+ " - (empty) select nothing") :
+ _("Prompt help:\n"
+ "1 - select a single item\n"
+ "3-5 - select a range of items\n"
+ "2-3,6-9 - select multiple ranges\n"
+ "foo - select item based on unique prefix\n"
+ "-... - unselect specified items\n"
+ "* - choose all items\n"
+ " - (empty) finish selecting"));
+ clean_print_color(CLEAN_COLOR_RESET);
+}
+
+/*
+ * display menu stuff with number prefix and hotkey highlight
+ */
+static void print_highlight_menu_stuff(struct menu_stuff *stuff, int **chosen)
+{
+ struct string_list menu_list = STRING_LIST_INIT_DUP;
+ struct strbuf menu = STRBUF_INIT;
+ struct menu_item *menu_item;
+ struct string_list_item *string_list_item;
+ int i;
+
+ switch (stuff->type) {
+ default:
+ die("Bad type of menu_stuff when print menu");
+ case MENU_STUFF_TYPE_MENU_ITEM:
+ menu_item = (struct menu_item *)stuff->stuff;
+ for (i = 0; i < stuff->nr; i++, menu_item++) {
+ const char *p;
+ int highlighted = 0;
+
+ p = menu_item->title;
+ if ((*chosen)[i] < 0)
+ (*chosen)[i] = menu_item->selected ? 1 : 0;
+ strbuf_addf(&menu, "%s%2d: ", (*chosen)[i] ? "*" : " ", i+1);
+ for (; *p; p++) {
+ if (!highlighted && *p == menu_item->hotkey) {
+ strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_PROMPT));
+ strbuf_addch(&menu, *p);
+ strbuf_addstr(&menu, clean_get_color(CLEAN_COLOR_RESET));
+ highlighted = 1;
+ } else {
+ strbuf_addch(&menu, *p);
+ }
+ }
+ string_list_append(&menu_list, menu.buf);
+ strbuf_reset(&menu);
+ }
+ break;
+ case MENU_STUFF_TYPE_STRING_LIST:
+ i = 0;
+ for_each_string_list_item(string_list_item, (struct string_list *)stuff->stuff) {
+ if ((*chosen)[i] < 0)
+ (*chosen)[i] = 0;
+ strbuf_addf(&menu, "%s%2d: %s",
+ (*chosen)[i] ? "*" : " ", i+1, string_list_item->string);
+ string_list_append(&menu_list, menu.buf);
+ strbuf_reset(&menu);
+ i++;
+ }
+ break;
+ }
+
+ pretty_print_menus(&menu_list);
+
+ strbuf_release(&menu);
+ string_list_clear(&menu_list, 0);
+}
+
+static int find_unique(const char *choice, struct menu_stuff *menu_stuff)
+{
+ struct menu_item *menu_item;
+ struct string_list_item *string_list_item;
+ int i, len, found = 0;
+
+ len = strlen(choice);
+ switch (menu_stuff->type) {
+ default:
+ die("Bad type of menu_stuff when parse choice");
+ case MENU_STUFF_TYPE_MENU_ITEM:
+
+ menu_item = (struct menu_item *)menu_stuff->stuff;
+ for (i = 0; i < menu_stuff->nr; i++, menu_item++) {
+ if (len == 1 && *choice == menu_item->hotkey) {
+ found = i + 1;
+ break;
+ }
+ if (!strncasecmp(choice, menu_item->title, len)) {
+ if (found) {
+ if (len == 1) {
+ /* continue for hotkey matching */
+ found = -1;
+ } else {
+ found = 0;
+ break;
+ }
+ } else {
+ found = i + 1;
+ }
+ }
+ }
+ break;
+ case MENU_STUFF_TYPE_STRING_LIST:
+ string_list_item = ((struct string_list *)menu_stuff->stuff)->items;
+ for (i = 0; i < menu_stuff->nr; i++, string_list_item++) {
+ if (!strncasecmp(choice, string_list_item->string, len)) {
+ if (found) {
+ found = 0;
+ break;
+ }
+ found = i + 1;
+ }
+ }
+ break;
+ }
+ return found;
+}
+
+
+/*
+ * Parse user input, and return choice(s) for menu (menu_stuff).
+ *
+ * Input
+ * (for single choice)
+ * 1 - select a numbered item
+ * foo - select item based on menu title
+ * - (empty) select nothing
+ *
+ * (for multiple choice)
+ * 1 - select a single item
+ * 3-5 - select a range of items
+ * 2-3,6-9 - select multiple ranges
+ * foo - select item based on menu title
+ * -... - unselect specified items
+ * * - choose all items
+ * - (empty) finish selecting
+ *
+ * The parse result will be saved in array **chosen, and
+ * return number of total selections.
+ */
+static int parse_choice(struct menu_stuff *menu_stuff,
+ int is_single,
+ struct strbuf input,
+ int **chosen)
+{
+ struct strbuf **choice_list, **ptr;
+ int nr = 0;
+ int i;
+
+ if (is_single) {
+ choice_list = strbuf_split_max(&input, '\n', 0);
+ } else {
+ char *p = input.buf;
+ do {
+ if (*p == ',')
+ *p = ' ';
+ } while (*p++);
+ choice_list = strbuf_split_max(&input, ' ', 0);
+ }
+
+ for (ptr = choice_list; *ptr; ptr++) {
+ char *p;
+ int choose = 1;
+ int bottom = 0, top = 0;
+ int is_range, is_number;
+
+ strbuf_trim(*ptr);
+ if (!(*ptr)->len)
+ continue;
+
+ /* Input that begins with '-'; unchoose */
+ if (*(*ptr)->buf == '-') {
+ choose = 0;
+ strbuf_remove((*ptr), 0, 1);
+ }
+
+ is_range = 0;
+ is_number = 1;
+ for (p = (*ptr)->buf; *p; p++) {
+ if ('-' == *p) {
+ if (!is_range) {
+ is_range = 1;
+ is_number = 0;
+ } else {
+ is_number = 0;
+ is_range = 0;
+ break;
+ }
+ } else if (!isdigit(*p)) {
+ is_number = 0;
+ is_range = 0;
+ break;
+ }
+ }
+
+ if (is_number) {
+ bottom = atoi((*ptr)->buf);
+ top = bottom;
+ } else if (is_range) {
+ bottom = atoi((*ptr)->buf);
+ /* a range can be specified like 5-7 or 5- */
+ if (!*(strchr((*ptr)->buf, '-') + 1))
+ top = menu_stuff->nr;
+ else
+ top = atoi(strchr((*ptr)->buf, '-') + 1);
+ } else if (!strcmp((*ptr)->buf, "*")) {
+ bottom = 1;
+ top = menu_stuff->nr;
+ } else {
+ bottom = find_unique((*ptr)->buf, menu_stuff);
+ top = bottom;
+ }
+
+ if (top <= 0 || bottom <= 0 || top > menu_stuff->nr || bottom > top ||
+ (is_single && bottom != top)) {
+ clean_print_color(CLEAN_COLOR_ERROR);
+ printf_ln(_("Huh (%s)?"), (*ptr)->buf);
+ clean_print_color(CLEAN_COLOR_RESET);
+ continue;
+ }
+
+ for (i = bottom; i <= top; i++)
+ (*chosen)[i-1] = choose;
+ }
+
+ strbuf_list_free(choice_list);
+
+ for (i = 0; i < menu_stuff->nr; i++)
+ nr += (*chosen)[i];
+ return nr;
+}
+
+/*
+ * Implement a git-add-interactive compatible UI, which is borrowed
+ * from git-add--interactive.perl.
+ *
+ * Return value:
+ *
+ * - Return an array of integers
+ * - , and it is up to you to free the allocated memory.
+ * - The array ends with EOF.
+ * - If user pressed CTRL-D (i.e. EOF), no selection returned.
+ */
+static int *list_and_choose(struct menu_opts *opts, struct menu_stuff *stuff)
+{
+ struct strbuf choice = STRBUF_INIT;
+ int *chosen, *result;
+ int nr = 0;
+ int eof = 0;
+ int i;
+
+ chosen = xmalloc(sizeof(int) * stuff->nr);
+ /* set chosen as uninitialized */
+ for (i = 0; i < stuff->nr; i++)
+ chosen[i] = -1;
+
+ for (;;) {
+ if (opts->header) {
+ printf_ln("%s%s%s",
+ clean_get_color(CLEAN_COLOR_HEADER),
+ _(opts->header),
+ clean_get_color(CLEAN_COLOR_RESET));
+ }
+
+ /* chosen will be initialized by print_highlight_menu_stuff */
+ print_highlight_menu_stuff(stuff, &chosen);
+
+ if (opts->flags & MENU_OPTS_LIST_ONLY)
+ break;
+
+ if (opts->prompt) {
+ printf("%s%s%s%s",
+ clean_get_color(CLEAN_COLOR_PROMPT),
+ _(opts->prompt),
+ opts->flags & MENU_OPTS_SINGLETON ? "> " : ">> ",
+ clean_get_color(CLEAN_COLOR_RESET));
+ }
+
+ if (strbuf_getline(&choice, stdin, '\n') != EOF) {
+ strbuf_trim(&choice);
+ } else {
+ eof = 1;
+ break;
+ }
+
+ /* help for prompt */
+ if (!strcmp(choice.buf, "?")) {
+ prompt_help_cmd(opts->flags & MENU_OPTS_SINGLETON);
+ continue;
+ }
+
+ /* for a multiple-choice menu, press ENTER (empty) will return back */
+ if (!(opts->flags & MENU_OPTS_SINGLETON) && !choice.len)
+ break;
+
+ nr = parse_choice(stuff,
+ opts->flags & MENU_OPTS_SINGLETON,
+ choice,
+ &chosen);
+
+ if (opts->flags & MENU_OPTS_SINGLETON) {
+ if (nr)
+ break;
+ } else if (opts->flags & MENU_OPTS_IMMEDIATE) {
+ break;
+ }
+ }
+
+ if (eof) {
+ result = xmalloc(sizeof(int));
+ *result = EOF;
+ } else {
+ int j = 0;
+
+ /*
+ * recalculate nr, if return back from menu directly with
+ * default selections.
+ */
+ if (!nr) {
+ for (i = 0; i < stuff->nr; i++)
+ nr += chosen[i];
+ }
+
+ result = xcalloc(nr + 1, sizeof(int));
+ for (i = 0; i < stuff->nr && j < nr; i++) {
+ if (chosen[i])
+ result[j++] = i;
+ }
+ result[j] = EOF;
+ }
+
+ free(chosen);
+ strbuf_release(&choice);
+ return result;
+}
+
+static int clean_cmd(void)
+{
+ return MENU_RETURN_NO_LOOP;
+}
+
+static int filter_by_patterns_cmd(void)
+{
+ struct dir_struct dir;
+ struct strbuf confirm = STRBUF_INIT;
+ struct strbuf **ignore_list;
+ struct string_list_item *item;
+ struct exclude_list *el;
+ int changed = -1, i;
+
+ for (;;) {
+ if (!del_list.nr)
+ break;
+
+ if (changed)
+ pretty_print_dels();
+
+ clean_print_color(CLEAN_COLOR_PROMPT);
+ printf(_("Input ignore patterns>> "));
+ clean_print_color(CLEAN_COLOR_RESET);
+ if (strbuf_getline(&confirm, stdin, '\n') != EOF)
+ strbuf_trim(&confirm);
+ else
+ putchar('\n');
+
+ /* quit filter_by_pattern mode if press ENTER or Ctrl-D */
+ if (!confirm.len)
+ break;
+
+ memset(&dir, 0, sizeof(dir));
+ el = add_exclude_list(&dir, EXC_CMDL, "manual exclude");
+ ignore_list = strbuf_split_max(&confirm, ' ', 0);
+
+ for (i = 0; ignore_list[i]; i++) {
+ strbuf_trim(ignore_list[i]);
+ if (!ignore_list[i]->len)
+ continue;
+
+ add_exclude(ignore_list[i]->buf, "", 0, el, -(i+1));
+ }
+
+ changed = 0;
+ for_each_string_list_item(item, &del_list) {
+ int dtype = DT_UNKNOWN;
+
+ if (is_excluded(&dir, item->string, &dtype)) {
+ *item->string = '\0';
+ changed++;
+ }
+ }
+
+ if (changed) {
+ string_list_remove_empty_items(&del_list, 0);
+ } else {
+ clean_print_color(CLEAN_COLOR_ERROR);
+ printf_ln(_("WARNING: Cannot find items matched by: %s"), confirm.buf);
+ clean_print_color(CLEAN_COLOR_RESET);
+ }
+
+ strbuf_list_free(ignore_list);
+ clear_directory(&dir);
+ }
+
+ strbuf_release(&confirm);
+ return 0;
+}
+
+static int select_by_numbers_cmd(void)
+{
+ struct menu_opts menu_opts;
+ struct menu_stuff menu_stuff;
+ struct string_list_item *items;
+ int *chosen;
+ int i, j;
+
+ menu_opts.header = NULL;
+ menu_opts.prompt = N_("Select items to delete");
+ menu_opts.flags = 0;
+
+ menu_stuff.type = MENU_STUFF_TYPE_STRING_LIST;
+ menu_stuff.stuff = &del_list;
+ menu_stuff.nr = del_list.nr;
+
+ chosen = list_and_choose(&menu_opts, &menu_stuff);
+ items = del_list.items;
+ for (i = 0, j = 0; i < del_list.nr; i++) {
+ if (i < chosen[j]) {
+ *(items[i].string) = '\0';
+ } else if (i == chosen[j]) {
+ /* delete selected item */
+ j++;
+ continue;
+ } else {
+ /* end of chosen (chosen[j] == EOF), won't delete */
+ *(items[i].string) = '\0';
+ }
+ }
+
+ string_list_remove_empty_items(&del_list, 0);
+
+ free(chosen);
+ return 0;
+}
+
+static int ask_each_cmd(void)
+{
+ struct strbuf confirm = STRBUF_INIT;
+ struct strbuf buf = STRBUF_INIT;
+ struct string_list_item *item;
+ const char *qname;
+ int changed = 0, eof = 0;
+
+ for_each_string_list_item(item, &del_list) {
+ /* Ctrl-D should stop removing files */
+ if (!eof) {
+ qname = quote_path_relative(item->string, NULL, &buf);
+ /* TRANSLATORS: Make sure to keep [y/N] as is */
+ printf(_("Remove %s [y/N]? "), qname);
+ if (strbuf_getline(&confirm, stdin, '\n') != EOF) {
+ strbuf_trim(&confirm);
+ } else {
+ putchar('\n');
+ eof = 1;
+ }
+ }
+ if (!confirm.len || strncasecmp(confirm.buf, "yes", confirm.len)) {
+ *item->string = '\0';
+ changed++;
+ }
+ }
+
+ if (changed)
+ string_list_remove_empty_items(&del_list, 0);
+
+ strbuf_release(&buf);
+ strbuf_release(&confirm);
+ return MENU_RETURN_NO_LOOP;
+}
+
+static int quit_cmd(void)
+{
+ string_list_clear(&del_list, 0);
+ printf_ln(_("Bye."));
+ return MENU_RETURN_NO_LOOP;
+}
+
+static int help_cmd(void)
+{
+ clean_print_color(CLEAN_COLOR_HELP);
+ printf_ln(_(
+ "clean - start cleaning\n"
+ "filter by pattern - exclude items from deletion\n"
+ "select by numbers - select items to be deleted by numbers\n"
+ "ask each - confirm each deletion (like \"rm -i\")\n"
+ "quit - stop cleaning\n"
+ "help - this screen\n"
+ "? - help for prompt selection"
+ ));
+ clean_print_color(CLEAN_COLOR_RESET);
+ return 0;
+}
+
+static void interactive_main_loop(void)
+{
+ while (del_list.nr) {
+ struct menu_opts menu_opts;
+ struct menu_stuff menu_stuff;
+ struct menu_item menus[] = {
+ {'c', "clean", 0, clean_cmd},
+ {'f', "filter by pattern", 0, filter_by_patterns_cmd},
+ {'s', "select by numbers", 0, select_by_numbers_cmd},
+ {'a', "ask each", 0, ask_each_cmd},
+ {'q', "quit", 0, quit_cmd},
+ {'h', "help", 0, help_cmd},
+ };
+ int *chosen;
+
+ menu_opts.header = N_("*** Commands ***");
+ menu_opts.prompt = N_("What now");
+ menu_opts.flags = MENU_OPTS_SINGLETON;
+
+ menu_stuff.type = MENU_STUFF_TYPE_MENU_ITEM;
+ menu_stuff.stuff = menus;
+ menu_stuff.nr = sizeof(menus) / sizeof(struct menu_item);
+
+ clean_print_color(CLEAN_COLOR_HEADER);
+ printf_ln(Q_("Would remove the following item:",
+ "Would remove the following items:",
+ del_list.nr));
+ clean_print_color(CLEAN_COLOR_RESET);
+
+ pretty_print_dels();
+
+ chosen = list_and_choose(&menu_opts, &menu_stuff);
+
+ if (*chosen != EOF) {
+ int ret;
+ ret = menus[*chosen].fn();
+ if (ret != MENU_RETURN_NO_LOOP) {
+ free(chosen);
+ chosen = NULL;
+ if (!del_list.nr) {
+ clean_print_color(CLEAN_COLOR_ERROR);
+ printf_ln(_("No more files to clean, exiting."));
+ clean_print_color(CLEAN_COLOR_RESET);
+ break;
+ }
+ continue;
+ }
+ } else {
+ quit_cmd();
+ }
+
+ free(chosen);
+ chosen = NULL;
+ break;
+ }
+}
+
+int cmd_clean(int argc, const char **argv, const char *prefix)
+{
+ int i, res;
+ int dry_run = 0, remove_directories = 0, quiet = 0, ignored = 0;
+ int ignored_only = 0, config_set = 0, errors = 0, gone = 1;
+ int rm_flags = REMOVE_DIR_KEEP_NESTED_GIT;
+ struct strbuf abs_path = STRBUF_INIT;
+ struct dir_struct dir;
+ struct pathspec pathspec;
+ struct strbuf buf = STRBUF_INIT;
+ struct string_list exclude_list = STRING_LIST_INIT_NODUP;
+ struct exclude_list *el;
+ struct string_list_item *item;
+ const char *qname;
+ struct option options[] = {
+ OPT__QUIET(&quiet, N_("do not print names of files removed")),
+ OPT__DRY_RUN(&dry_run, N_("dry run")),
+ OPT__FORCE(&force, N_("force")),
+ OPT_BOOL('i', "interactive", &interactive, N_("interactive cleaning")),
+ OPT_BOOL('d', NULL, &remove_directories,
+ N_("remove whole directories")),
+ { OPTION_CALLBACK, 'e', "exclude", &exclude_list, N_("pattern"),
+ N_("add <pattern> to ignore rules"), PARSE_OPT_NONEG, exclude_cb },
+ OPT_BOOL('x', NULL, &ignored, N_("remove ignored files, too")),
+ OPT_BOOL('X', NULL, &ignored_only,
+ N_("remove only ignored files")),
+ OPT_END()
+ };
+
+ git_config(git_clean_config, NULL);
+ if (force < 0)
+ force = 0;
+ else
+ config_set = 1;
+
+ argc = parse_options(argc, argv, prefix, options, builtin_clean_usage,
+ 0);
+
+ memset(&dir, 0, sizeof(dir));
+ if (ignored_only)
+ dir.flags |= DIR_SHOW_IGNORED;
+
+ if (ignored && ignored_only)
+ die(_("-x and -X cannot be used together"));
+
+ if (!interactive && !dry_run && !force) {
+ if (config_set)
+ die(_("clean.requireForce set to true and neither -i, -n, nor -f given; "
+ "refusing to clean"));
+ else
+ die(_("clean.requireForce defaults to true and neither -i, -n, nor -f given;"
+ " refusing to clean"));
+ }
+
+ if (force > 1)
+ rm_flags = 0;
+
+ dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
+
+ if (read_cache() < 0)
+ die(_("index file corrupt"));
+
+ if (!ignored)
+ setup_standard_excludes(&dir);
+
+ el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
+ for (i = 0; i < exclude_list.nr; i++)
+ add_exclude(exclude_list.items[i].string, "", 0, el, -(i+1));
+
+ parse_pathspec(&pathspec, 0,
+ PATHSPEC_PREFER_CWD,
+ prefix, argv);
+
+ fill_directory(&dir, &pathspec);
+
+ for (i = 0; i < dir.nr; i++) {
+ struct dir_entry *ent = dir.entries[i];
+ int matches = 0;
+ struct stat st;
+ const char *rel;
+
+ if (!cache_name_is_other(ent->name, ent->len))
+ continue;
+
+ if (pathspec.nr)
+ matches = dir_path_match(ent, &pathspec, 0, NULL);
+
+ if (pathspec.nr && !matches)
+ continue;
+
+ if (lstat(ent->name, &st))
+ die_errno("Cannot lstat '%s'", ent->name);
+
+ if (S_ISDIR(st.st_mode) && !remove_directories &&
+ matches != MATCHED_EXACTLY)
+ continue;
+
+ rel = relative_path(ent->name, prefix, &buf);
+ string_list_append(&del_list, rel);
+ }
+
+ if (interactive && del_list.nr > 0)
+ interactive_main_loop();
+
+ for_each_string_list_item(item, &del_list) {
+ struct stat st;
+
+ if (prefix)
+ strbuf_addstr(&abs_path, prefix);
+
+ strbuf_addstr(&abs_path, item->string);
+
+ /*
+ * we might have removed this as part of earlier
+ * recursive directory removal, so lstat() here could
+ * fail with ENOENT.
+ */
+ if (lstat(abs_path.buf, &st))
+ continue;
+
+ if (S_ISDIR(st.st_mode)) {
+ if (remove_dirs(&abs_path, prefix, rm_flags, dry_run, quiet, &gone))
+ errors++;
+ if (gone && !quiet) {
+ qname = quote_path_relative(item->string, NULL, &buf);
+ printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
+ }
+ } else {
+ res = dry_run ? 0 : unlink(abs_path.buf);
+ if (res) {
+ qname = quote_path_relative(item->string, NULL, &buf);
+ warning(_(msg_warn_remove_failed), qname);
+ errors++;
+ } else if (!quiet) {
+ qname = quote_path_relative(item->string, NULL, &buf);
+ printf(dry_run ? _(msg_would_remove) : _(msg_remove), qname);
+ }
+ }
+ strbuf_reset(&abs_path);
+ }
+
+ strbuf_release(&abs_path);
+ strbuf_release(&buf);
+ string_list_clear(&del_list, 0);
+ string_list_clear(&exclude_list, 0);
+ return (errors != 0);
+}
diff --git a/builtin/clone.c b/builtin/clone.c
new file mode 100644
index 0000000..13030ee
--- /dev/null
+++ b/builtin/clone.c
@@ -0,0 +1,1028 @@
+/*
+ * Builtin "git clone"
+ *
+ * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
+ * 2008 Daniel Barkalow <barkalow@iabervon.org>
+ * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
+ *
+ * Clone a repository into a different directory that does not yet exist.
+ */
+
+#include "builtin.h"
+#include "lockfile.h"
+#include "parse-options.h"
+#include "fetch-pack.h"
+#include "refs.h"
+#include "tree.h"
+#include "tree-walk.h"
+#include "unpack-trees.h"
+#include "transport.h"
+#include "strbuf.h"
+#include "dir.h"
+#include "sigchain.h"
+#include "branch.h"
+#include "remote.h"
+#include "run-command.h"
+#include "connected.h"
+
+/*
+ * Overall FIXMEs:
+ * - respect DB_ENVIRONMENT for .git/objects.
+ *
+ * Implementation notes:
+ * - dropping use-separate-remote and no-separate-remote compatibility
+ *
+ */
+static const char * const builtin_clone_usage[] = {
+ N_("git clone [<options>] [--] <repo> [<dir>]"),
+ NULL
+};
+
+static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
+static int option_local = -1, option_no_hardlinks, option_shared, option_recursive;
+static char *option_template, *option_depth;
+static char *option_origin = NULL;
+static char *option_branch = NULL;
+static const char *real_git_dir;
+static char *option_upload_pack = "git-upload-pack";
+static int option_verbosity;
+static int option_progress = -1;
+static struct string_list option_config;
+static struct string_list option_reference;
+static int option_dissociate;
+
+static int opt_parse_reference(const struct option *opt, const char *arg, int unset)
+{
+ struct string_list *option_reference = opt->value;
+ if (!arg)
+ return -1;
+ string_list_append(option_reference, arg);
+ return 0;
+}
+
+static struct option builtin_clone_options[] = {
+ OPT__VERBOSITY(&option_verbosity),
+ OPT_BOOL(0, "progress", &option_progress,
+ N_("force progress reporting")),
+ OPT_BOOL('n', "no-checkout", &option_no_checkout,
+ N_("don't create a checkout")),
+ OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")),
+ OPT_HIDDEN_BOOL(0, "naked", &option_bare,
+ N_("create a bare repository")),
+ OPT_BOOL(0, "mirror", &option_mirror,
+ N_("create a mirror repository (implies bare)")),
+ OPT_BOOL('l', "local", &option_local,
+ N_("to clone from a local repository")),
+ OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks,
+ N_("don't use local hardlinks, always copy")),
+ OPT_BOOL('s', "shared", &option_shared,
+ N_("setup as shared repository")),
+ OPT_BOOL(0, "recursive", &option_recursive,
+ N_("initialize submodules in the clone")),
+ OPT_BOOL(0, "recurse-submodules", &option_recursive,
+ N_("initialize submodules in the clone")),
+ OPT_STRING(0, "template", &option_template, N_("template-directory"),
+ N_("directory from which templates will be used")),
+ OPT_CALLBACK(0 , "reference", &option_reference, N_("repo"),
+ N_("reference repository"), &opt_parse_reference),
+ OPT_STRING('o', "origin", &option_origin, N_("name"),
+ N_("use <name> instead of 'origin' to track upstream")),
+ OPT_STRING('b', "branch", &option_branch, N_("branch"),
+ N_("checkout <branch> instead of the remote's HEAD")),
+ OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"),
+ N_("path to git-upload-pack on the remote")),
+ OPT_STRING(0, "depth", &option_depth, N_("depth"),
+ N_("create a shallow clone of that depth")),
+ OPT_BOOL(0, "single-branch", &option_single_branch,
+ N_("clone only one branch, HEAD or --branch")),
+ OPT_BOOL(0, "dissociate", &option_dissociate,
+ N_("use --reference only while cloning")),
+ OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
+ N_("separate git dir from working tree")),
+ OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
+ N_("set config inside the new repository")),
+ OPT_END()
+};
+
+static const char *argv_submodule[] = {
+ "submodule", "update", "--init", "--recursive", NULL
+};
+
+static char *get_repo_path(const char *repo, int *is_bundle)
+{
+ static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
+ static char *bundle_suffix[] = { ".bundle", "" };
+ struct stat st;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(suffix); i++) {
+ const char *path;
+ path = mkpath("%s%s", repo, suffix[i]);
+ if (stat(path, &st))
+ continue;
+ if (S_ISDIR(st.st_mode) && is_git_directory(path)) {
+ *is_bundle = 0;
+ return xstrdup(absolute_path(path));
+ } else if (S_ISREG(st.st_mode) && st.st_size > 8) {
+ /* Is it a "gitfile"? */
+ char signature[8];
+ int len, fd = open(path, O_RDONLY);
+ if (fd < 0)
+ continue;
+ len = read_in_full(fd, signature, 8);
+ close(fd);
+ if (len != 8 || strncmp(signature, "gitdir: ", 8))
+ continue;
+ path = read_gitfile(path);
+ if (path) {
+ *is_bundle = 0;
+ return xstrdup(absolute_path(path));
+ }
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
+ const char *path;
+ path = mkpath("%s%s", repo, bundle_suffix[i]);
+ if (!stat(path, &st) && S_ISREG(st.st_mode)) {
+ *is_bundle = 1;
+ return xstrdup(absolute_path(path));
+ }
+ }
+
+ return NULL;
+}
+
+static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
+{
+ const char *end = repo + strlen(repo), *start;
+ char *dir;
+
+ /*
+ * Strip trailing spaces, slashes and /.git
+ */
+ while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
+ end--;
+ if (end - repo > 5 && is_dir_sep(end[-5]) &&
+ !strncmp(end - 4, ".git", 4)) {
+ end -= 5;
+ while (repo < end && is_dir_sep(end[-1]))
+ end--;
+ }
+
+ /*
+ * Find last component, but be prepared that repo could have
+ * the form "remote.example.com:foo.git", i.e. no slash
+ * in the directory part.
+ */
+ start = end;
+ while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':')
+ start--;
+
+ /*
+ * Strip .{bundle,git}.
+ */
+ if (is_bundle) {
+ if (end - start > 7 && !strncmp(end - 7, ".bundle", 7))
+ end -= 7;
+ } else {
+ if (end - start > 4 && !strncmp(end - 4, ".git", 4))
+ end -= 4;
+ }
+
+ if (is_bare) {
+ struct strbuf result = STRBUF_INIT;
+ strbuf_addf(&result, "%.*s.git", (int)(end - start), start);
+ dir = strbuf_detach(&result, NULL);
+ } else
+ dir = xstrndup(start, end - start);
+ /*
+ * Replace sequences of 'control' characters and whitespace
+ * with one ascii space, remove leading and trailing spaces.
+ */
+ if (*dir) {
+ char *out = dir;
+ int prev_space = 1 /* strip leading whitespace */;
+ for (end = dir; *end; ++end) {
+ char ch = *end;
+ if ((unsigned char)ch < '\x20')
+ ch = '\x20';
+ if (isspace(ch)) {
+ if (prev_space)
+ continue;
+ prev_space = 1;
+ } else
+ prev_space = 0;
+ *out++ = ch;
+ }
+ *out = '\0';
+ if (out > dir && prev_space)
+ out[-1] = '\0';
+ }
+ return dir;
+}
+
+static void strip_trailing_slashes(char *dir)
+{
+ char *end = dir + strlen(dir);
+
+ while (dir < end - 1 && is_dir_sep(end[-1]))
+ end--;
+ *end = '\0';
+}
+
+static int add_one_reference(struct string_list_item *item, void *cb_data)
+{
+ char *ref_git;
+ const char *repo;
+ struct strbuf alternate = STRBUF_INIT;
+
+ /* Beware: read_gitfile(), real_path() and mkpath() return static buffer */
+ ref_git = xstrdup(real_path(item->string));
+
+ repo = read_gitfile(ref_git);
+ if (!repo)
+ repo = read_gitfile(mkpath("%s/.git", ref_git));
+ if (repo) {
+ free(ref_git);
+ ref_git = xstrdup(repo);
+ }
+
+ if (!repo && is_directory(mkpath("%s/.git/objects", ref_git))) {
+ char *ref_git_git = mkpathdup("%s/.git", ref_git);
+ free(ref_git);
+ ref_git = ref_git_git;
+ } else if (!is_directory(mkpath("%s/objects", ref_git)))
+ die(_("reference repository '%s' is not a local repository."),
+ item->string);
+
+ if (!access(mkpath("%s/shallow", ref_git), F_OK))
+ die(_("reference repository '%s' is shallow"), item->string);
+
+ if (!access(mkpath("%s/info/grafts", ref_git), F_OK))
+ die(_("reference repository '%s' is grafted"), item->string);
+
+ strbuf_addf(&alternate, "%s/objects", ref_git);
+ add_to_alternates_file(alternate.buf);
+ strbuf_release(&alternate);
+ free(ref_git);
+ return 0;
+}
+
+static void setup_reference(void)
+{
+ for_each_string_list(&option_reference, add_one_reference, NULL);
+}
+
+static void copy_alternates(struct strbuf *src, struct strbuf *dst,
+ const char *src_repo)
+{
+ /*
+ * Read from the source objects/info/alternates file
+ * and copy the entries to corresponding file in the
+ * destination repository with add_to_alternates_file().
+ * Both src and dst have "$path/objects/info/alternates".
+ *
+ * Instead of copying bit-for-bit from the original,
+ * we need to append to existing one so that the already
+ * created entry via "clone -s" is not lost, and also
+ * to turn entries with paths relative to the original
+ * absolute, so that they can be used in the new repository.
+ */
+ FILE *in = fopen(src->buf, "r");
+ struct strbuf line = STRBUF_INIT;
+
+ while (strbuf_getline(&line, in, '\n') != EOF) {
+ char *abs_path, abs_buf[PATH_MAX];
+ if (!line.len || line.buf[0] == '#')
+ continue;
+ if (is_absolute_path(line.buf)) {
+ add_to_alternates_file(line.buf);
+ continue;
+ }
+ abs_path = mkpath("%s/objects/%s", src_repo, line.buf);
+ normalize_path_copy(abs_buf, abs_path);
+ add_to_alternates_file(abs_buf);
+ }
+ strbuf_release(&line);
+ fclose(in);
+}
+
+static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
+ const char *src_repo, int src_baselen)
+{
+ struct dirent *de;
+ struct stat buf;
+ int src_len, dest_len;
+ DIR *dir;
+
+ dir = opendir(src->buf);
+ if (!dir)
+ die_errno(_("failed to open '%s'"), src->buf);
+
+ if (mkdir(dest->buf, 0777)) {
+ if (errno != EEXIST)
+ die_errno(_("failed to create directory '%s'"), dest->buf);
+ else if (stat(dest->buf, &buf))
+ die_errno(_("failed to stat '%s'"), dest->buf);
+ else if (!S_ISDIR(buf.st_mode))
+ die(_("%s exists and is not a directory"), dest->buf);
+ }
+
+ strbuf_addch(src, '/');
+ src_len = src->len;
+ strbuf_addch(dest, '/');
+ dest_len = dest->len;
+
+ while ((de = readdir(dir)) != NULL) {
+ strbuf_setlen(src, src_len);
+ strbuf_addstr(src, de->d_name);
+ strbuf_setlen(dest, dest_len);
+ strbuf_addstr(dest, de->d_name);
+ if (stat(src->buf, &buf)) {
+ warning (_("failed to stat %s\n"), src->buf);
+ continue;
+ }
+ if (S_ISDIR(buf.st_mode)) {
+ if (de->d_name[0] != '.')
+ copy_or_link_directory(src, dest,
+ src_repo, src_baselen);
+ continue;
+ }
+
+ /* Files that cannot be copied bit-for-bit... */
+ if (!strcmp(src->buf + src_baselen, "/info/alternates")) {
+ copy_alternates(src, dest, src_repo);
+ continue;
+ }
+
+ if (unlink(dest->buf) && errno != ENOENT)
+ die_errno(_("failed to unlink '%s'"), dest->buf);
+ if (!option_no_hardlinks) {
+ if (!link(src->buf, dest->buf))
+ continue;
+ if (option_local > 0)
+ die_errno(_("failed to create link '%s'"), dest->buf);
+ option_no_hardlinks = 1;
+ }
+ if (copy_file_with_time(dest->buf, src->buf, 0666))
+ die_errno(_("failed to copy file to '%s'"), dest->buf);
+ }
+ closedir(dir);
+}
+
+static void clone_local(const char *src_repo, const char *dest_repo)
+{
+ if (option_shared) {
+ struct strbuf alt = STRBUF_INIT;
+ strbuf_addf(&alt, "%s/objects", src_repo);
+ add_to_alternates_file(alt.buf);
+ strbuf_release(&alt);
+ } else {
+ struct strbuf src = STRBUF_INIT;
+ struct strbuf dest = STRBUF_INIT;
+ strbuf_addf(&src, "%s/objects", src_repo);
+ strbuf_addf(&dest, "%s/objects", dest_repo);
+ copy_or_link_directory(&src, &dest, src_repo, src.len);
+ strbuf_release(&src);
+ strbuf_release(&dest);
+ }
+
+ if (0 <= option_verbosity)
+ fprintf(stderr, _("done.\n"));
+}
+
+static const char *junk_work_tree;
+static const char *junk_git_dir;
+static enum {
+ JUNK_LEAVE_NONE,
+ JUNK_LEAVE_REPO,
+ JUNK_LEAVE_ALL
+} junk_mode = JUNK_LEAVE_NONE;
+
+static const char junk_leave_repo_msg[] =
+N_("Clone succeeded, but checkout failed.\n"
+ "You can inspect what was checked out with 'git status'\n"
+ "and retry the checkout with 'git checkout -f HEAD'\n");
+
+static void remove_junk(void)
+{
+ struct strbuf sb = STRBUF_INIT;
+
+ switch (junk_mode) {
+ case JUNK_LEAVE_REPO:
+ warning("%s", _(junk_leave_repo_msg));
+ /* fall-through */
+ case JUNK_LEAVE_ALL:
+ return;
+ default:
+ /* proceed to removal */
+ break;
+ }
+
+ if (junk_git_dir) {
+ strbuf_addstr(&sb, junk_git_dir);
+ remove_dir_recursively(&sb, 0);
+ strbuf_reset(&sb);
+ }
+ if (junk_work_tree) {
+ strbuf_addstr(&sb, junk_work_tree);
+ remove_dir_recursively(&sb, 0);
+ strbuf_reset(&sb);
+ }
+}
+
+static void remove_junk_on_signal(int signo)
+{
+ remove_junk();
+ sigchain_pop(signo);
+ raise(signo);
+}
+
+static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
+{
+ struct ref *ref;
+ struct strbuf head = STRBUF_INIT;
+ strbuf_addstr(&head, "refs/heads/");
+ strbuf_addstr(&head, branch);
+ ref = find_ref_by_name(refs, head.buf);
+ strbuf_release(&head);
+
+ if (ref)
+ return ref;
+
+ strbuf_addstr(&head, "refs/tags/");
+ strbuf_addstr(&head, branch);
+ ref = find_ref_by_name(refs, head.buf);
+ strbuf_release(&head);
+
+ return ref;
+}
+
+static struct ref *wanted_peer_refs(const struct ref *refs,
+ struct refspec *refspec)
+{
+ struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
+ struct ref *local_refs = head;
+ struct ref **tail = head ? &head->next : &local_refs;
+
+ if (option_single_branch) {
+ struct ref *remote_head = NULL;
+
+ if (!option_branch)
+ remote_head = guess_remote_head(head, refs, 0);
+ else {
+ local_refs = NULL;
+ tail = &local_refs;
+ remote_head = copy_ref(find_remote_branch(refs, option_branch));
+ }
+
+ if (!remote_head && option_branch)
+ warning(_("Could not find remote branch %s to clone."),
+ option_branch);
+ else {
+ get_fetch_map(remote_head, refspec, &tail, 0);
+
+ /* if --branch=tag, pull the requested tag explicitly */
+ get_fetch_map(remote_head, tag_refspec, &tail, 0);
+ }
+ } else
+ get_fetch_map(refs, refspec, &tail, 0);
+
+ if (!option_mirror && !option_single_branch)
+ get_fetch_map(refs, tag_refspec, &tail, 0);
+
+ return local_refs;
+}
+
+static void write_remote_refs(const struct ref *local_refs)
+{
+ const struct ref *r;
+
+ lock_packed_refs(LOCK_DIE_ON_ERROR);
+
+ for (r = local_refs; r; r = r->next) {
+ if (!r->peer_ref)
+ continue;
+ add_packed_ref(r->peer_ref->name, r->old_sha1);
+ }
+
+ if (commit_packed_refs())
+ die_errno("unable to overwrite old ref-pack file");
+}
+
+static void write_followtags(const struct ref *refs, const char *msg)
+{
+ const struct ref *ref;
+ for (ref = refs; ref; ref = ref->next) {
+ if (!starts_with(ref->name, "refs/tags/"))
+ continue;
+ if (ends_with(ref->name, "^{}"))
+ continue;
+ if (!has_sha1_file(ref->old_sha1))
+ continue;
+ update_ref(msg, ref->name, ref->old_sha1,
+ NULL, 0, UPDATE_REFS_DIE_ON_ERR);
+ }
+}
+
+static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
+{
+ struct ref **rm = cb_data;
+ struct ref *ref = *rm;
+
+ /*
+ * Skip anything missing a peer_ref, which we are not
+ * actually going to write a ref for.
+ */
+ while (ref && !ref->peer_ref)
+ ref = ref->next;
+ /* Returning -1 notes "end of list" to the caller. */
+ if (!ref)
+ return -1;
+
+ hashcpy(sha1, ref->old_sha1);
+ *rm = ref->next;
+ return 0;
+}
+
+static void update_remote_refs(const struct ref *refs,
+ const struct ref *mapped_refs,
+ const struct ref *remote_head_points_at,
+ const char *branch_top,
+ const char *msg,
+ struct transport *transport,
+ int check_connectivity)
+{
+ const struct ref *rm = mapped_refs;
+
+ if (check_connectivity) {
+ if (transport->progress)
+ fprintf(stderr, _("Checking connectivity... "));
+ if (check_everything_connected_with_transport(iterate_ref_map,
+ 0, &rm, transport))
+ die(_("remote did not send all necessary objects"));
+ if (transport->progress)
+ fprintf(stderr, _("done.\n"));
+ }
+
+ if (refs) {
+ write_remote_refs(mapped_refs);
+ if (option_single_branch)
+ write_followtags(refs, msg);
+ }
+
+ if (remote_head_points_at && !option_bare) {
+ struct strbuf head_ref = STRBUF_INIT;
+ strbuf_addstr(&head_ref, branch_top);
+ strbuf_addstr(&head_ref, "HEAD");
+ create_symref(head_ref.buf,
+ remote_head_points_at->peer_ref->name,
+ msg);
+ }
+}
+
+static void update_head(const struct ref *our, const struct ref *remote,
+ const char *msg)
+{
+ const char *head;
+ if (our && skip_prefix(our->name, "refs/heads/", &head)) {
+ /* Local default branch link */
+ create_symref("HEAD", our->name, NULL);
+ if (!option_bare) {
+ update_ref(msg, "HEAD", our->old_sha1, NULL, 0,
+ UPDATE_REFS_DIE_ON_ERR);
+ install_branch_config(0, head, option_origin, our->name);
+ }
+ } else if (our) {
+ struct commit *c = lookup_commit_reference(our->old_sha1);
+ /* --branch specifies a non-branch (i.e. tags), detach HEAD */
+ update_ref(msg, "HEAD", c->object.sha1,
+ NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+ } else if (remote) {
+ /*
+ * We know remote HEAD points to a non-branch, or
+ * HEAD points to a branch but we don't know which one.
+ * Detach HEAD in all these cases.
+ */
+ update_ref(msg, "HEAD", remote->old_sha1,
+ NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+ }
+}
+
+static int checkout(void)
+{
+ unsigned char sha1[20];
+ char *head;
+ struct lock_file *lock_file;
+ struct unpack_trees_options opts;
+ struct tree *tree;
+ struct tree_desc t;
+ int err = 0;
+
+ if (option_no_checkout)
+ return 0;
+
+ head = resolve_refdup("HEAD", RESOLVE_REF_READING, sha1, NULL);
+ if (!head) {
+ warning(_("remote HEAD refers to nonexistent ref, "
+ "unable to checkout.\n"));
+ return 0;
+ }
+ if (!strcmp(head, "HEAD")) {
+ if (advice_detached_head)
+ detach_advice(sha1_to_hex(sha1));
+ } else {
+ if (!starts_with(head, "refs/heads/"))
+ die(_("HEAD not found below refs/heads!"));
+ }
+ free(head);
+
+ /* We need to be in the new work tree for the checkout */
+ setup_work_tree();
+
+ lock_file = xcalloc(1, sizeof(struct lock_file));
+ hold_locked_index(lock_file, 1);
+
+ memset(&opts, 0, sizeof opts);
+ opts.update = 1;
+ opts.merge = 1;
+ opts.fn = oneway_merge;
+ opts.verbose_update = (option_verbosity >= 0);
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+
+ tree = parse_tree_indirect(sha1);
+ parse_tree(tree);
+ init_tree_desc(&t, tree->buffer, tree->size);
+ if (unpack_trees(1, &t, &opts) < 0)
+ die(_("unable to checkout working tree"));
+
+ if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
+ die(_("unable to write new index file"));
+
+ err |= run_hook_le(NULL, "post-checkout", sha1_to_hex(null_sha1),
+ sha1_to_hex(sha1), "1", NULL);
+
+ if (!err && option_recursive)
+ err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
+
+ return err;
+}
+
+static int write_one_config(const char *key, const char *value, void *data)
+{
+ return git_config_set_multivar(key, value ? value : "true", "^$", 0);
+}
+
+static void write_config(struct string_list *config)
+{
+ int i;
+
+ for (i = 0; i < config->nr; i++) {
+ if (git_config_parse_parameter(config->items[i].string,
+ write_one_config, NULL) < 0)
+ die("unable to write parameters to config file");
+ }
+}
+
+static void write_refspec_config(const char *src_ref_prefix,
+ const struct ref *our_head_points_at,
+ const struct ref *remote_head_points_at,
+ struct strbuf *branch_top)
+{
+ struct strbuf key = STRBUF_INIT;
+ struct strbuf value = STRBUF_INIT;
+
+ if (option_mirror || !option_bare) {
+ if (option_single_branch && !option_mirror) {
+ if (option_branch) {
+ if (starts_with(our_head_points_at->name, "refs/tags/"))
+ strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
+ our_head_points_at->name);
+ else
+ strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
+ branch_top->buf, option_branch);
+ } else if (remote_head_points_at) {
+ const char *head = remote_head_points_at->name;
+ if (!skip_prefix(head, "refs/heads/", &head))
+ die("BUG: remote HEAD points at non-head?");
+
+ strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
+ branch_top->buf, head);
+ }
+ /*
+ * otherwise, the next "git fetch" will
+ * simply fetch from HEAD without updating
+ * any remote-tracking branch, which is what
+ * we want.
+ */
+ } else {
+ strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf);
+ }
+ /* Configure the remote */
+ if (value.len) {
+ strbuf_addf(&key, "remote.%s.fetch", option_origin);
+ git_config_set_multivar(key.buf, value.buf, "^$", 0);
+ strbuf_reset(&key);
+
+ if (option_mirror) {
+ strbuf_addf(&key, "remote.%s.mirror", option_origin);
+ git_config_set(key.buf, "true");
+ strbuf_reset(&key);
+ }
+ }
+ }
+
+ strbuf_release(&key);
+ strbuf_release(&value);
+}
+
+static void dissociate_from_references(void)
+{
+ static const char* argv[] = { "repack", "-a", "-d", NULL };
+
+ if (run_command_v_opt(argv, RUN_GIT_CMD|RUN_COMMAND_NO_STDIN))
+ die(_("cannot repack to clean up"));
+ if (unlink(git_path("objects/info/alternates")) && errno != ENOENT)
+ die_errno(_("cannot unlink temporary alternates file"));
+}
+
+int cmd_clone(int argc, const char **argv, const char *prefix)
+{
+ int is_bundle = 0, is_local;
+ struct stat buf;
+ const char *repo_name, *repo, *work_tree, *git_dir;
+ char *path, *dir;
+ int dest_exists;
+ const struct ref *refs, *remote_head;
+ const struct ref *remote_head_points_at;
+ const struct ref *our_head_points_at;
+ struct ref *mapped_refs;
+ const struct ref *ref;
+ struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
+ struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
+ struct transport *transport = NULL;
+ const char *src_ref_prefix = "refs/heads/";
+ struct remote *remote;
+ int err = 0, complete_refs_before_fetch = 1;
+
+ struct refspec *refspec;
+ const char *fetch_pattern;
+
+ packet_trace_identity("clone");
+ argc = parse_options(argc, argv, prefix, builtin_clone_options,
+ builtin_clone_usage, 0);
+
+ if (argc > 2)
+ usage_msg_opt(_("Too many arguments."),
+ builtin_clone_usage, builtin_clone_options);
+
+ if (argc == 0)
+ usage_msg_opt(_("You must specify a repository to clone."),
+ builtin_clone_usage, builtin_clone_options);
+
+ if (option_single_branch == -1)
+ option_single_branch = option_depth ? 1 : 0;
+
+ if (option_mirror)
+ option_bare = 1;
+
+ if (option_bare) {
+ if (option_origin)
+ die(_("--bare and --origin %s options are incompatible."),
+ option_origin);
+ if (real_git_dir)
+ die(_("--bare and --separate-git-dir are incompatible."));
+ option_no_checkout = 1;
+ }
+
+ if (!option_origin)
+ option_origin = "origin";
+
+ repo_name = argv[0];
+
+ path = get_repo_path(repo_name, &is_bundle);
+ if (path)
+ repo = xstrdup(absolute_path(repo_name));
+ else if (!strchr(repo_name, ':'))
+ die(_("repository '%s' does not exist"), repo_name);
+ else
+ repo = repo_name;
+
+ /* no need to be strict, transport_set_option() will validate it again */
+ if (option_depth && atoi(option_depth) < 1)
+ die(_("depth %s is not a positive number"), option_depth);
+
+ if (argc == 2)
+ dir = xstrdup(argv[1]);
+ else
+ dir = guess_dir_name(repo_name, is_bundle, option_bare);
+ strip_trailing_slashes(dir);
+
+ dest_exists = !stat(dir, &buf);
+ if (dest_exists && !is_empty_dir(dir))
+ die(_("destination path '%s' already exists and is not "
+ "an empty directory."), dir);
+
+ strbuf_addf(&reflog_msg, "clone: from %s", repo);
+
+ if (option_bare)
+ work_tree = NULL;
+ else {
+ work_tree = getenv("GIT_WORK_TREE");
+ if (work_tree && !stat(work_tree, &buf))
+ die(_("working tree '%s' already exists."), work_tree);
+ }
+
+ if (option_bare || work_tree)
+ git_dir = xstrdup(dir);
+ else {
+ work_tree = dir;
+ git_dir = mkpathdup("%s/.git", dir);
+ }
+
+ atexit(remove_junk);
+ sigchain_push_common(remove_junk_on_signal);
+
+ if (!option_bare) {
+ if (safe_create_leading_directories_const(work_tree) < 0)
+ die_errno(_("could not create leading directories of '%s'"),
+ work_tree);
+ if (!dest_exists && mkdir(work_tree, 0777))
+ die_errno(_("could not create work tree dir '%s'"),
+ work_tree);
+ junk_work_tree = work_tree;
+ set_git_work_tree(work_tree);
+ }
+
+ junk_git_dir = git_dir;
+ if (safe_create_leading_directories_const(git_dir) < 0)
+ die(_("could not create leading directories of '%s'"), git_dir);
+
+ set_git_dir_init(git_dir, real_git_dir, 0);
+ if (real_git_dir) {
+ git_dir = real_git_dir;
+ junk_git_dir = real_git_dir;
+ }
+
+ if (0 <= option_verbosity) {
+ if (option_bare)
+ fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
+ else
+ fprintf(stderr, _("Cloning into '%s'...\n"), dir);
+ }
+ init_db(option_template, INIT_DB_QUIET);
+ write_config(&option_config);
+
+ git_config(git_default_config, NULL);
+
+ if (option_bare) {
+ if (option_mirror)
+ src_ref_prefix = "refs/";
+ strbuf_addstr(&branch_top, src_ref_prefix);
+
+ git_config_set("core.bare", "true");
+ } else {
+ strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
+ }
+
+ strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
+ strbuf_addf(&key, "remote.%s.url", option_origin);
+ git_config_set(key.buf, repo);
+ strbuf_reset(&key);
+
+ if (option_reference.nr)
+ setup_reference();
+ else if (option_dissociate) {
+ warning(_("--dissociate given, but there is no --reference"));
+ option_dissociate = 0;
+ }
+
+ fetch_pattern = value.buf;
+ refspec = parse_fetch_refspec(1, &fetch_pattern);
+
+ strbuf_reset(&value);
+
+ remote = remote_get(option_origin);
+ transport = transport_get(remote, remote->url[0]);
+ transport_set_verbosity(transport, option_verbosity, option_progress);
+
+ path = get_repo_path(remote->url[0], &is_bundle);
+ is_local = option_local != 0 && path && !is_bundle;
+ if (is_local) {
+ if (option_depth)
+ warning(_("--depth is ignored in local clones; use file:// instead."));
+ if (!access(mkpath("%s/shallow", path), F_OK)) {
+ if (option_local > 0)
+ warning(_("source repository is shallow, ignoring --local"));
+ is_local = 0;
+ }
+ }
+ if (option_local > 0 && !is_local)
+ warning(_("--local is ignored"));
+ transport->cloning = 1;
+
+ if (!transport->get_refs_list || (!is_local && !transport->fetch))
+ die(_("Don't know how to clone %s"), transport->url);
+
+ transport_set_option(transport, TRANS_OPT_KEEP, "yes");
+
+ if (option_depth)
+ transport_set_option(transport, TRANS_OPT_DEPTH,
+ option_depth);
+ if (option_single_branch)
+ transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
+
+ if (option_upload_pack)
+ transport_set_option(transport, TRANS_OPT_UPLOADPACK,
+ option_upload_pack);
+
+ if (transport->smart_options && !option_depth)
+ transport->smart_options->check_self_contained_and_connected = 1;
+
+ refs = transport_get_remote_refs(transport);
+
+ if (refs) {
+ mapped_refs = wanted_peer_refs(refs, refspec);
+ /*
+ * transport_get_remote_refs() may return refs with null sha-1
+ * in mapped_refs (see struct transport->get_refs_list
+ * comment). In that case we need fetch it early because
+ * remote_head code below relies on it.
+ *
+ * for normal clones, transport_get_remote_refs() should
+ * return reliable ref set, we can delay cloning until after
+ * remote HEAD check.
+ */
+ for (ref = refs; ref; ref = ref->next)
+ if (is_null_sha1(ref->old_sha1)) {
+ complete_refs_before_fetch = 0;
+ break;
+ }
+
+ if (!is_local && !complete_refs_before_fetch)
+ transport_fetch_refs(transport, mapped_refs);
+
+ remote_head = find_ref_by_name(refs, "HEAD");
+ remote_head_points_at =
+ guess_remote_head(remote_head, mapped_refs, 0);
+
+ if (option_branch) {
+ our_head_points_at =
+ find_remote_branch(mapped_refs, option_branch);
+
+ if (!our_head_points_at)
+ die(_("Remote branch %s not found in upstream %s"),
+ option_branch, option_origin);
+ }
+ else
+ our_head_points_at = remote_head_points_at;
+ }
+ else {
+ if (option_branch)
+ die(_("Remote branch %s not found in upstream %s"),
+ option_branch, option_origin);
+
+ warning(_("You appear to have cloned an empty repository."));
+ mapped_refs = NULL;
+ our_head_points_at = NULL;
+ remote_head_points_at = NULL;
+ remote_head = NULL;
+ option_no_checkout = 1;
+ if (!option_bare)
+ install_branch_config(0, "master", option_origin,
+ "refs/heads/master");
+ }
+
+ write_refspec_config(src_ref_prefix, our_head_points_at,
+ remote_head_points_at, &branch_top);
+
+ if (is_local)
+ clone_local(path, git_dir);
+ else if (refs && complete_refs_before_fetch)
+ transport_fetch_refs(transport, mapped_refs);
+
+ update_remote_refs(refs, mapped_refs, remote_head_points_at,
+ branch_top.buf, reflog_msg.buf, transport, !is_local);
+
+ update_head(our_head_points_at, remote_head, reflog_msg.buf);
+
+ transport_unlock_pack(transport);
+ transport_disconnect(transport);
+
+ if (option_dissociate)
+ dissociate_from_references();
+
+ junk_mode = JUNK_LEAVE_REPO;
+ err = checkout();
+
+ strbuf_release(&reflog_msg);
+ strbuf_release(&branch_top);
+ strbuf_release(&key);
+ strbuf_release(&value);
+ junk_mode = JUNK_LEAVE_ALL;
+
+ free(refspec);
+ return err;
+}
diff --git a/builtin/column.c b/builtin/column.c
new file mode 100644
index 0000000..449413c
--- /dev/null
+++ b/builtin/column.c
@@ -0,0 +1,59 @@
+#include "builtin.h"
+#include "cache.h"
+#include "strbuf.h"
+#include "parse-options.h"
+#include "string-list.h"
+#include "column.h"
+
+static const char * const builtin_column_usage[] = {
+ N_("git column [<options>]"),
+ NULL
+};
+static unsigned int colopts;
+
+static int column_config(const char *var, const char *value, void *cb)
+{
+ return git_column_config(var, value, cb, &colopts);
+}
+
+int cmd_column(int argc, const char **argv, const char *prefix)
+{
+ struct string_list list = STRING_LIST_INIT_DUP;
+ struct strbuf sb = STRBUF_INIT;
+ struct column_options copts;
+ const char *command = NULL, *real_command = NULL;
+ struct option options[] = {
+ OPT_STRING(0, "command", &real_command, N_("name"), N_("lookup config vars")),
+ OPT_COLUMN(0, "mode", &colopts, N_("layout to use")),
+ OPT_INTEGER(0, "raw-mode", &colopts, N_("layout to use")),
+ OPT_INTEGER(0, "width", &copts.width, N_("Maximum width")),
+ OPT_STRING(0, "indent", &copts.indent, N_("string"), N_("Padding space on left border")),
+ OPT_INTEGER(0, "nl", &copts.nl, N_("Padding space on right border")),
+ OPT_INTEGER(0, "padding", &copts.padding, N_("Padding space between columns")),
+ OPT_END()
+ };
+
+ /* This one is special and must be the first one */
+ if (argc > 1 && starts_with(argv[1], "--command=")) {
+ command = argv[1] + 10;
+ git_config(column_config, (void *)command);
+ } else
+ git_config(column_config, NULL);
+
+ memset(&copts, 0, sizeof(copts));
+ copts.width = term_columns();
+ copts.padding = 1;
+ argc = parse_options(argc, argv, "", options, builtin_column_usage, 0);
+ if (argc)
+ usage_with_options(builtin_column_usage, options);
+ if (real_command || command) {
+ if (!real_command || !command || strcmp(real_command, command))
+ die(_("--command must be the first argument"));
+ }
+ finalize_colopts(&colopts, -1);
+ while (!strbuf_getline(&sb, stdin, '\n'))
+ string_list_append(&list, sb.buf);
+
+ print_columns(&list, colopts, &copts);
+ return 0;
+}
diff --git a/builtin/commit-tree.c b/builtin/commit-tree.c
new file mode 100644
index 0000000..25aa2cd
--- /dev/null
+++ b/builtin/commit-tree.c
@@ -0,0 +1,133 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "commit.h"
+#include "tree.h"
+#include "builtin.h"
+#include "utf8.h"
+#include "gpg-interface.h"
+
+static const char commit_tree_usage[] = "git commit-tree [(-p <sha1>)...] [-S[<keyid>]] [-m <message>] [-F <file>] <sha1> <changelog";
+
+static const char *sign_commit;
+
+static void new_parent(struct commit *parent, struct commit_list **parents_p)
+{
+ unsigned char *sha1 = parent->object.sha1;
+ struct commit_list *parents;
+ for (parents = *parents_p; parents; parents = parents->next) {
+ if (parents->item == parent) {
+ error("duplicate parent %s ignored", sha1_to_hex(sha1));
+ return;
+ }
+ parents_p = &parents->next;
+ }
+ commit_list_insert(parent, parents_p);
+}
+
+static int commit_tree_config(const char *var, const char *value, void *cb)
+{
+ int status = git_gpg_config(var, value, NULL);
+ if (status)
+ return status;
+ if (!strcmp(var, "commit.gpgsign")) {
+ sign_commit = git_config_bool(var, value) ? "" : NULL;
+ return 0;
+ }
+ return git_default_config(var, value, cb);
+}
+
+int cmd_commit_tree(int argc, const char **argv, const char *prefix)
+{
+ int i, got_tree = 0;
+ struct commit_list *parents = NULL;
+ unsigned char tree_sha1[20];
+ unsigned char commit_sha1[20];
+ struct strbuf buffer = STRBUF_INIT;
+
+ git_config(commit_tree_config, NULL);
+
+ if (argc < 2 || !strcmp(argv[1], "-h"))
+ usage(commit_tree_usage);
+
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+ if (!strcmp(arg, "-p")) {
+ unsigned char sha1[20];
+ if (argc <= ++i)
+ usage(commit_tree_usage);
+ if (get_sha1_commit(argv[i], sha1))
+ die("Not a valid object name %s", argv[i]);
+ assert_sha1_type(sha1, OBJ_COMMIT);
+ new_parent(lookup_commit(sha1), &parents);
+ continue;
+ }
+
+ if (skip_prefix(arg, "-S", &sign_commit))
+ continue;
+
+ if (!strcmp(arg, "--no-gpg-sign")) {
+ sign_commit = NULL;
+ continue;
+ }
+
+ if (!strcmp(arg, "-m")) {
+ if (argc <= ++i)
+ usage(commit_tree_usage);
+ if (buffer.len)
+ strbuf_addch(&buffer, '\n');
+ strbuf_addstr(&buffer, argv[i]);
+ strbuf_complete_line(&buffer);
+ continue;
+ }
+
+ if (!strcmp(arg, "-F")) {
+ int fd;
+
+ if (argc <= ++i)
+ usage(commit_tree_usage);
+ if (buffer.len)
+ strbuf_addch(&buffer, '\n');
+ if (!strcmp(argv[i], "-"))
+ fd = 0;
+ else {
+ fd = open(argv[i], O_RDONLY);
+ if (fd < 0)
+ die_errno("git commit-tree: failed to open '%s'",
+ argv[i]);
+ }
+ if (strbuf_read(&buffer, fd, 0) < 0)
+ die_errno("git commit-tree: failed to read '%s'",
+ argv[i]);
+ if (fd && close(fd))
+ die_errno("git commit-tree: failed to close '%s'",
+ argv[i]);
+ strbuf_complete_line(&buffer);
+ continue;
+ }
+
+ if (get_sha1_tree(arg, tree_sha1))
+ die("Not a valid object name %s", arg);
+ if (got_tree)
+ die("Cannot give more than one trees");
+ got_tree = 1;
+ }
+
+ if (!buffer.len) {
+ if (strbuf_read(&buffer, 0, 0) < 0)
+ die_errno("git commit-tree: failed to read");
+ }
+
+ if (commit_tree(buffer.buf, buffer.len, tree_sha1, parents,
+ commit_sha1, NULL, sign_commit)) {
+ strbuf_release(&buffer);
+ return 1;
+ }
+
+ printf("%s\n", sha1_to_hex(commit_sha1));
+ strbuf_release(&buffer);
+ return 0;
+}
diff --git a/builtin/commit.c b/builtin/commit.c
new file mode 100644
index 0000000..c2ebea4
--- /dev/null
+++ b/builtin/commit.c
@@ -0,0 +1,1806 @@
+/*
+ * Builtin "git commit"
+ *
+ * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>
+ * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
+ */
+
+#include "cache.h"
+#include "lockfile.h"
+#include "cache-tree.h"
+#include "color.h"
+#include "dir.h"
+#include "builtin.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "commit.h"
+#include "revision.h"
+#include "wt-status.h"
+#include "run-command.h"
+#include "refs.h"
+#include "log-tree.h"
+#include "strbuf.h"
+#include "utf8.h"
+#include "parse-options.h"
+#include "string-list.h"
+#include "rerere.h"
+#include "unpack-trees.h"
+#include "quote.h"
+#include "submodule.h"
+#include "gpg-interface.h"
+#include "column.h"
+#include "sequencer.h"
+#include "notes-utils.h"
+#include "mailmap.h"
+
+static const char * const builtin_commit_usage[] = {
+ N_("git commit [<options>] [--] <pathspec>..."),
+ NULL
+};
+
+static const char * const builtin_status_usage[] = {
+ N_("git status [<options>] [--] <pathspec>..."),
+ NULL
+};
+
+static const char implicit_ident_advice_noconfig[] =
+N_("Your name and email address were configured automatically based\n"
+"on your username and hostname. Please check that they are accurate.\n"
+"You can suppress this message by setting them explicitly. Run the\n"
+"following command and follow the instructions in your editor to edit\n"
+"your configuration file:\n"
+"\n"
+" git config --global --edit\n"
+"\n"
+"After doing this, you may fix the identity used for this commit with:\n"
+"\n"
+" git commit --amend --reset-author\n");
+
+static const char implicit_ident_advice_config[] =
+N_("Your name and email address were configured automatically based\n"
+"on your username and hostname. Please check that they are accurate.\n"
+"You can suppress this message by setting them explicitly:\n"
+"\n"
+" git config --global user.name \"Your Name\"\n"
+" git config --global user.email you@example.com\n"
+"\n"
+"After doing this, you may fix the identity used for this commit with:\n"
+"\n"
+" git commit --amend --reset-author\n");
+
+static const char empty_amend_advice[] =
+N_("You asked to amend the most recent commit, but doing so would make\n"
+"it empty. You can repeat your command with --allow-empty, or you can\n"
+"remove the commit entirely with \"git reset HEAD^\".\n");
+
+static const char empty_cherry_pick_advice[] =
+N_("The previous cherry-pick is now empty, possibly due to conflict resolution.\n"
+"If you wish to commit it anyway, use:\n"
+"\n"
+" git commit --allow-empty\n"
+"\n");
+
+static const char empty_cherry_pick_advice_single[] =
+N_("Otherwise, please use 'git reset'\n");
+
+static const char empty_cherry_pick_advice_multi[] =
+N_("If you wish to skip this commit, use:\n"
+"\n"
+" git reset\n"
+"\n"
+"Then \"git cherry-pick --continue\" will resume cherry-picking\n"
+"the remaining commits.\n");
+
+static const char *use_message_buffer;
+static const char commit_editmsg[] = "COMMIT_EDITMSG";
+static struct lock_file index_lock; /* real index */
+static struct lock_file false_lock; /* used only for partial commits */
+static enum {
+ COMMIT_AS_IS = 1,
+ COMMIT_NORMAL,
+ COMMIT_PARTIAL
+} commit_style;
+
+static const char *logfile, *force_author;
+static const char *template_file;
+/*
+ * The _message variables are commit names from which to take
+ * the commit message and/or authorship.
+ */
+static const char *author_message, *author_message_buffer;
+static char *edit_message, *use_message;
+static char *fixup_message, *squash_message;
+static int all, also, interactive, patch_interactive, only, amend, signoff;
+static int edit_flag = -1; /* unspecified */
+static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
+static int no_post_rewrite, allow_empty_message;
+static char *untracked_files_arg, *force_date, *ignore_submodule_arg;
+static char *sign_commit;
+
+/*
+ * The default commit message cleanup mode will remove the lines
+ * beginning with # (shell comments) and leading and trailing
+ * whitespaces (empty lines or containing only whitespaces)
+ * if editor is used, and only the whitespaces if the message
+ * is specified explicitly.
+ */
+static enum {
+ CLEANUP_SPACE,
+ CLEANUP_NONE,
+ CLEANUP_SCISSORS,
+ CLEANUP_ALL
+} cleanup_mode;
+static const char *cleanup_arg;
+
+static enum commit_whence whence;
+static int sequencer_in_use;
+static int use_editor = 1, include_status = 1;
+static int show_ignored_in_status, have_option_m;
+static const char *only_include_assumed;
+static struct strbuf message = STRBUF_INIT;
+
+static enum status_format {
+ STATUS_FORMAT_NONE = 0,
+ STATUS_FORMAT_LONG,
+ STATUS_FORMAT_SHORT,
+ STATUS_FORMAT_PORCELAIN,
+
+ STATUS_FORMAT_UNSPECIFIED
+} status_format = STATUS_FORMAT_UNSPECIFIED;
+
+static int opt_parse_m(const struct option *opt, const char *arg, int unset)
+{
+ struct strbuf *buf = opt->value;
+ if (unset) {
+ have_option_m = 0;
+ strbuf_setlen(buf, 0);
+ } else {
+ have_option_m = 1;
+ if (buf->len)
+ strbuf_addch(buf, '\n');
+ strbuf_addstr(buf, arg);
+ strbuf_complete_line(buf);
+ }
+ return 0;
+}
+
+static void determine_whence(struct wt_status *s)
+{
+ if (file_exists(git_path("MERGE_HEAD")))
+ whence = FROM_MERGE;
+ else if (file_exists(git_path("CHERRY_PICK_HEAD"))) {
+ whence = FROM_CHERRY_PICK;
+ if (file_exists(git_path("sequencer")))
+ sequencer_in_use = 1;
+ }
+ else
+ whence = FROM_COMMIT;
+ if (s)
+ s->whence = whence;
+}
+
+static void status_init_config(struct wt_status *s, config_fn_t fn)
+{
+ wt_status_prepare(s);
+ gitmodules_config();
+ git_config(fn, s);
+ determine_whence(s);
+ s->hints = advice_status_hints; /* must come after git_config() */
+}
+
+static void rollback_index_files(void)
+{
+ switch (commit_style) {
+ case COMMIT_AS_IS:
+ break; /* nothing to do */
+ case COMMIT_NORMAL:
+ rollback_lock_file(&index_lock);
+ break;
+ case COMMIT_PARTIAL:
+ rollback_lock_file(&index_lock);
+ rollback_lock_file(&false_lock);
+ break;
+ }
+}
+
+static int commit_index_files(void)
+{
+ int err = 0;
+
+ switch (commit_style) {
+ case COMMIT_AS_IS:
+ break; /* nothing to do */
+ case COMMIT_NORMAL:
+ err = commit_lock_file(&index_lock);
+ break;
+ case COMMIT_PARTIAL:
+ err = commit_lock_file(&index_lock);
+ rollback_lock_file(&false_lock);
+ break;
+ }
+
+ return err;
+}
+
+/*
+ * Take a union of paths in the index and the named tree (typically, "HEAD"),
+ * and return the paths that match the given pattern in list.
+ */
+static int list_paths(struct string_list *list, const char *with_tree,
+ const char *prefix, const struct pathspec *pattern)
+{
+ int i, ret;
+ char *m;
+
+ if (!pattern->nr)
+ return 0;
+
+ m = xcalloc(1, pattern->nr);
+
+ if (with_tree) {
+ char *max_prefix = common_prefix(pattern);
+ overlay_tree_on_cache(with_tree, max_prefix ? max_prefix : prefix);
+ free(max_prefix);
+ }
+
+ for (i = 0; i < active_nr; i++) {
+ const struct cache_entry *ce = active_cache[i];
+ struct string_list_item *item;
+
+ if (ce->ce_flags & CE_UPDATE)
+ continue;
+ if (!ce_path_match(ce, pattern, m))
+ continue;
+ item = string_list_insert(list, ce->name);
+ if (ce_skip_worktree(ce))
+ item->util = item; /* better a valid pointer than a fake one */
+ }
+
+ ret = report_path_error(m, pattern, prefix);
+ free(m);
+ return ret;
+}
+
+static void add_remove_files(struct string_list *list)
+{
+ int i;
+ for (i = 0; i < list->nr; i++) {
+ struct stat st;
+ struct string_list_item *p = &(list->items[i]);
+
+ /* p->util is skip-worktree */
+ if (p->util)
+ continue;
+
+ if (!lstat(p->string, &st)) {
+ if (add_to_cache(p->string, &st, 0))
+ die(_("updating files failed"));
+ } else
+ remove_file_from_cache(p->string);
+ }
+}
+
+static void create_base_index(const struct commit *current_head)
+{
+ struct tree *tree;
+ struct unpack_trees_options opts;
+ struct tree_desc t;
+
+ if (!current_head) {
+ discard_cache();
+ return;
+ }
+
+ memset(&opts, 0, sizeof(opts));
+ opts.head_idx = 1;
+ opts.index_only = 1;
+ opts.merge = 1;
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+
+ opts.fn = oneway_merge;
+ tree = parse_tree_indirect(current_head->object.sha1);
+ if (!tree)
+ die(_("failed to unpack HEAD tree object"));
+ parse_tree(tree);
+ init_tree_desc(&t, tree->buffer, tree->size);
+ if (unpack_trees(1, &t, &opts))
+ exit(128); /* We've already reported the error, finish dying */
+}
+
+static void refresh_cache_or_die(int refresh_flags)
+{
+ /*
+ * refresh_flags contains REFRESH_QUIET, so the only errors
+ * are for unmerged entries.
+ */
+ if (refresh_cache(refresh_flags | REFRESH_IN_PORCELAIN))
+ die_resolve_conflict("commit");
+}
+
+static const char *prepare_index(int argc, const char **argv, const char *prefix,
+ const struct commit *current_head, int is_status)
+{
+ struct string_list partial;
+ struct pathspec pathspec;
+ int refresh_flags = REFRESH_QUIET;
+
+ if (is_status)
+ refresh_flags |= REFRESH_UNMERGED;
+ parse_pathspec(&pathspec, 0,
+ PATHSPEC_PREFER_FULL,
+ prefix, argv);
+
+ if (read_cache_preload(&pathspec) < 0)
+ die(_("index file corrupt"));
+
+ if (interactive) {
+ char *old_index_env = NULL;
+ hold_locked_index(&index_lock, 1);
+
+ refresh_cache_or_die(refresh_flags);
+
+ if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+ die(_("unable to create temporary index"));
+
+ old_index_env = getenv(INDEX_ENVIRONMENT);
+ setenv(INDEX_ENVIRONMENT, index_lock.filename.buf, 1);
+
+ if (interactive_add(argc, argv, prefix, patch_interactive) != 0)
+ die(_("interactive add failed"));
+
+ if (old_index_env && *old_index_env)
+ setenv(INDEX_ENVIRONMENT, old_index_env, 1);
+ else
+ unsetenv(INDEX_ENVIRONMENT);
+
+ discard_cache();
+ read_cache_from(index_lock.filename.buf);
+ if (update_main_cache_tree(WRITE_TREE_SILENT) == 0) {
+ if (reopen_lock_file(&index_lock) < 0)
+ die(_("unable to write index file"));
+ if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+ die(_("unable to update temporary index"));
+ } else
+ warning(_("Failed to update main cache tree"));
+
+ commit_style = COMMIT_NORMAL;
+ return index_lock.filename.buf;
+ }
+
+ /*
+ * Non partial, non as-is commit.
+ *
+ * (1) get the real index;
+ * (2) update the_index as necessary;
+ * (3) write the_index out to the real index (still locked);
+ * (4) return the name of the locked index file.
+ *
+ * The caller should run hooks on the locked real index, and
+ * (A) if all goes well, commit the real index;
+ * (B) on failure, rollback the real index.
+ */
+ if (all || (also && pathspec.nr)) {
+ hold_locked_index(&index_lock, 1);
+ add_files_to_cache(also ? prefix : NULL, &pathspec, 0);
+ refresh_cache_or_die(refresh_flags);
+ update_main_cache_tree(WRITE_TREE_SILENT);
+ if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+ die(_("unable to write new_index file"));
+ commit_style = COMMIT_NORMAL;
+ return index_lock.filename.buf;
+ }
+
+ /*
+ * As-is commit.
+ *
+ * (1) return the name of the real index file.
+ *
+ * The caller should run hooks on the real index,
+ * and create commit from the_index.
+ * We still need to refresh the index here.
+ */
+ if (!only && !pathspec.nr) {
+ hold_locked_index(&index_lock, 1);
+ refresh_cache_or_die(refresh_flags);
+ if (active_cache_changed
+ || !cache_tree_fully_valid(active_cache_tree)) {
+ update_main_cache_tree(WRITE_TREE_SILENT);
+ active_cache_changed = 1;
+ }
+ if (active_cache_changed) {
+ if (write_locked_index(&the_index, &index_lock,
+ COMMIT_LOCK))
+ die(_("unable to write new_index file"));
+ } else {
+ rollback_lock_file(&index_lock);
+ }
+ commit_style = COMMIT_AS_IS;
+ return get_index_file();
+ }
+
+ /*
+ * A partial commit.
+ *
+ * (0) find the set of affected paths;
+ * (1) get lock on the real index file;
+ * (2) update the_index with the given paths;
+ * (3) write the_index out to the real index (still locked);
+ * (4) get lock on the false index file;
+ * (5) reset the_index from HEAD;
+ * (6) update the_index the same way as (2);
+ * (7) write the_index out to the false index file;
+ * (8) return the name of the false index file (still locked);
+ *
+ * The caller should run hooks on the locked false index, and
+ * create commit from it. Then
+ * (A) if all goes well, commit the real index;
+ * (B) on failure, rollback the real index;
+ * In either case, rollback the false index.
+ */
+ commit_style = COMMIT_PARTIAL;
+
+ if (whence != FROM_COMMIT) {
+ if (whence == FROM_MERGE)
+ die(_("cannot do a partial commit during a merge."));
+ else if (whence == FROM_CHERRY_PICK)
+ die(_("cannot do a partial commit during a cherry-pick."));
+ }
+
+ string_list_init(&partial, 1);
+ if (list_paths(&partial, !current_head ? NULL : "HEAD", prefix, &pathspec))
+ exit(1);
+
+ discard_cache();
+ if (read_cache() < 0)
+ die(_("cannot read the index"));
+
+ hold_locked_index(&index_lock, 1);
+ add_remove_files(&partial);
+ refresh_cache(REFRESH_QUIET);
+ update_main_cache_tree(WRITE_TREE_SILENT);
+ if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+ die(_("unable to write new_index file"));
+
+ hold_lock_file_for_update(&false_lock,
+ git_path("next-index-%"PRIuMAX,
+ (uintmax_t) getpid()),
+ LOCK_DIE_ON_ERROR);
+
+ create_base_index(current_head);
+ add_remove_files(&partial);
+ refresh_cache(REFRESH_QUIET);
+
+ if (write_locked_index(&the_index, &false_lock, CLOSE_LOCK))
+ die(_("unable to write temporary index file"));
+
+ discard_cache();
+ read_cache_from(false_lock.filename.buf);
+
+ return false_lock.filename.buf;
+}
+
+static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
+ struct wt_status *s)
+{
+ unsigned char sha1[20];
+
+ if (s->relative_paths)
+ s->prefix = prefix;
+
+ if (amend) {
+ s->amend = 1;
+ s->reference = "HEAD^1";
+ }
+ s->verbose = verbose;
+ s->index_file = index_file;
+ s->fp = fp;
+ s->nowarn = nowarn;
+ s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
+
+ wt_status_collect(s);
+
+ switch (status_format) {
+ case STATUS_FORMAT_SHORT:
+ wt_shortstatus_print(s);
+ break;
+ case STATUS_FORMAT_PORCELAIN:
+ wt_porcelain_print(s);
+ break;
+ case STATUS_FORMAT_UNSPECIFIED:
+ die("BUG: finalize_deferred_config() should have been called");
+ break;
+ case STATUS_FORMAT_NONE:
+ case STATUS_FORMAT_LONG:
+ wt_status_print(s);
+ break;
+ }
+
+ return s->commitable;
+}
+
+static int is_a_merge(const struct commit *current_head)
+{
+ return !!(current_head->parents && current_head->parents->next);
+}
+
+static void assert_split_ident(struct ident_split *id, const struct strbuf *buf)
+{
+ if (split_ident_line(id, buf->buf, buf->len) || !id->date_begin)
+ die("BUG: unable to parse our own ident: %s", buf->buf);
+}
+
+static void export_one(const char *var, const char *s, const char *e, int hack)
+{
+ struct strbuf buf = STRBUF_INIT;
+ if (hack)
+ strbuf_addch(&buf, hack);
+ strbuf_addf(&buf, "%.*s", (int)(e - s), s);
+ setenv(var, buf.buf, 1);
+ strbuf_release(&buf);
+}
+
+static int parse_force_date(const char *in, struct strbuf *out)
+{
+ strbuf_addch(out, '@');
+
+ if (parse_date(in, out) < 0) {
+ int errors = 0;
+ unsigned long t = approxidate_careful(in, &errors);
+ if (errors)
+ return -1;
+ strbuf_addf(out, "%lu", t);
+ }
+
+ return 0;
+}
+
+static void set_ident_var(char **buf, char *val)
+{
+ free(*buf);
+ *buf = val;
+}
+
+static void determine_author_info(struct strbuf *author_ident)
+{
+ char *name, *email, *date;
+ struct ident_split author;
+
+ name = xstrdup_or_null(getenv("GIT_AUTHOR_NAME"));
+ email = xstrdup_or_null(getenv("GIT_AUTHOR_EMAIL"));
+ date = xstrdup_or_null(getenv("GIT_AUTHOR_DATE"));
+
+ if (author_message) {
+ struct ident_split ident;
+ size_t len;
+ const char *a;
+
+ a = find_commit_header(author_message_buffer, "author", &len);
+ if (!a)
+ die(_("commit '%s' lacks author header"), author_message);
+ if (split_ident_line(&ident, a, len) < 0)
+ die(_("commit '%s' has malformed author line"), author_message);
+
+ set_ident_var(&name, xmemdupz(ident.name_begin, ident.name_end - ident.name_begin));
+ set_ident_var(&email, xmemdupz(ident.mail_begin, ident.mail_end - ident.mail_begin));
+
+ if (ident.date_begin) {
+ struct strbuf date_buf = STRBUF_INIT;
+ strbuf_addch(&date_buf, '@');
+ strbuf_add(&date_buf, ident.date_begin, ident.date_end - ident.date_begin);
+ strbuf_addch(&date_buf, ' ');
+ strbuf_add(&date_buf, ident.tz_begin, ident.tz_end - ident.tz_begin);
+ set_ident_var(&date, strbuf_detach(&date_buf, NULL));
+ }
+ }
+
+ if (force_author) {
+ struct ident_split ident;
+
+ if (split_ident_line(&ident, force_author, strlen(force_author)) < 0)
+ die(_("malformed --author parameter"));
+ set_ident_var(&name, xmemdupz(ident.name_begin, ident.name_end - ident.name_begin));
+ set_ident_var(&email, xmemdupz(ident.mail_begin, ident.mail_end - ident.mail_begin));
+ }
+
+ if (force_date) {
+ struct strbuf date_buf = STRBUF_INIT;
+ if (parse_force_date(force_date, &date_buf))
+ die(_("invalid date format: %s"), force_date);
+ set_ident_var(&date, strbuf_detach(&date_buf, NULL));
+ }
+
+ strbuf_addstr(author_ident, fmt_ident(name, email, date, IDENT_STRICT));
+ assert_split_ident(&author, author_ident);
+ export_one("GIT_AUTHOR_NAME", author.name_begin, author.name_end, 0);
+ export_one("GIT_AUTHOR_EMAIL", author.mail_begin, author.mail_end, 0);
+ export_one("GIT_AUTHOR_DATE", author.date_begin, author.tz_end, '@');
+ free(name);
+ free(email);
+ free(date);
+}
+
+static int author_date_is_interesting(void)
+{
+ return author_message || force_date;
+}
+
+static void adjust_comment_line_char(const struct strbuf *sb)
+{
+ char candidates[] = "#;@!$%^&|:";
+ char *candidate;
+ const char *p;
+
+ comment_line_char = candidates[0];
+ if (!memchr(sb->buf, comment_line_char, sb->len))
+ return;
+
+ p = sb->buf;
+ candidate = strchr(candidates, *p);
+ if (candidate)
+ *candidate = ' ';
+ for (p = sb->buf; *p; p++) {
+ if ((p[0] == '\n' || p[0] == '\r') && p[1]) {
+ candidate = strchr(candidates, p[1]);
+ if (candidate)
+ *candidate = ' ';
+ }
+ }
+
+ for (p = candidates; *p == ' '; p++)
+ ;
+ if (!*p)
+ die(_("unable to select a comment character that is not used\n"
+ "in the current commit message"));
+ comment_line_char = *p;
+}
+
+static int prepare_to_commit(const char *index_file, const char *prefix,
+ struct commit *current_head,
+ struct wt_status *s,
+ struct strbuf *author_ident)
+{
+ struct stat statbuf;
+ struct strbuf committer_ident = STRBUF_INIT;
+ int commitable;
+ struct strbuf sb = STRBUF_INIT;
+ const char *hook_arg1 = NULL;
+ const char *hook_arg2 = NULL;
+ int clean_message_contents = (cleanup_mode != CLEANUP_NONE);
+ int old_display_comment_prefix;
+
+ /* This checks and barfs if author is badly specified */
+ determine_author_info(author_ident);
+
+ if (!no_verify && run_commit_hook(use_editor, index_file, "pre-commit", NULL))
+ return 0;
+
+ if (squash_message) {
+ /*
+ * Insert the proper subject line before other commit
+ * message options add their content.
+ */
+ if (use_message && !strcmp(use_message, squash_message))
+ strbuf_addstr(&sb, "squash! ");
+ else {
+ struct pretty_print_context ctx = {0};
+ struct commit *c;
+ c = lookup_commit_reference_by_name(squash_message);
+ if (!c)
+ die(_("could not lookup commit %s"), squash_message);
+ ctx.output_encoding = get_commit_output_encoding();
+ format_commit_message(c, "squash! %s\n\n", &sb,
+ &ctx);
+ }
+ }
+
+ if (message.len) {
+ strbuf_addbuf(&sb, &message);
+ hook_arg1 = "message";
+ } else if (logfile && !strcmp(logfile, "-")) {
+ if (isatty(0))
+ fprintf(stderr, _("(reading log message from standard input)\n"));
+ if (strbuf_read(&sb, 0, 0) < 0)
+ die_errno(_("could not read log from standard input"));
+ hook_arg1 = "message";
+ } else if (logfile) {
+ if (strbuf_read_file(&sb, logfile, 0) < 0)
+ die_errno(_("could not read log file '%s'"),
+ logfile);
+ hook_arg1 = "message";
+ } else if (use_message) {
+ char *buffer;
+ buffer = strstr(use_message_buffer, "\n\n");
+ if (buffer)
+ strbuf_addstr(&sb, buffer + 2);
+ hook_arg1 = "commit";
+ hook_arg2 = use_message;
+ } else if (fixup_message) {
+ struct pretty_print_context ctx = {0};
+ struct commit *commit;
+ commit = lookup_commit_reference_by_name(fixup_message);
+ if (!commit)
+ die(_("could not lookup commit %s"), fixup_message);
+ ctx.output_encoding = get_commit_output_encoding();
+ format_commit_message(commit, "fixup! %s\n\n",
+ &sb, &ctx);
+ hook_arg1 = "message";
+ } else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
+ if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
+ die_errno(_("could not read MERGE_MSG"));
+ hook_arg1 = "merge";
+ } else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
+ if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
+ die_errno(_("could not read SQUASH_MSG"));
+ hook_arg1 = "squash";
+ } else if (template_file) {
+ if (strbuf_read_file(&sb, template_file, 0) < 0)
+ die_errno(_("could not read '%s'"), template_file);
+ hook_arg1 = "template";
+ clean_message_contents = 0;
+ }
+
+ /*
+ * The remaining cases don't modify the template message, but
+ * just set the argument(s) to the prepare-commit-msg hook.
+ */
+ else if (whence == FROM_MERGE)
+ hook_arg1 = "merge";
+ else if (whence == FROM_CHERRY_PICK) {
+ hook_arg1 = "commit";
+ hook_arg2 = "CHERRY_PICK_HEAD";
+ }
+
+ if (squash_message) {
+ /*
+ * If squash_commit was used for the commit subject,
+ * then we're possibly hijacking other commit log options.
+ * Reset the hook args to tell the real story.
+ */
+ hook_arg1 = "message";
+ hook_arg2 = "";
+ }
+
+ s->fp = fopen(git_path(commit_editmsg), "w");
+ if (s->fp == NULL)
+ die_errno(_("could not open '%s'"), git_path(commit_editmsg));
+
+ /* Ignore status.displayCommentPrefix: we do need comments in COMMIT_EDITMSG. */
+ old_display_comment_prefix = s->display_comment_prefix;
+ s->display_comment_prefix = 1;
+
+ /*
+ * Most hints are counter-productive when the commit has
+ * already started.
+ */
+ s->hints = 0;
+
+ if (clean_message_contents)
+ stripspace(&sb, 0);
+
+ if (signoff)
+ append_signoff(&sb, ignore_non_trailer(&sb), 0);
+
+ if (fwrite(sb.buf, 1, sb.len, s->fp) < sb.len)
+ die_errno(_("could not write commit template"));
+
+ if (auto_comment_line_char)
+ adjust_comment_line_char(&sb);
+ strbuf_release(&sb);
+
+ /* This checks if committer ident is explicitly given */
+ strbuf_addstr(&committer_ident, git_committer_info(IDENT_STRICT));
+ if (use_editor && include_status) {
+ int ident_shown = 0;
+ int saved_color_setting;
+ struct ident_split ci, ai;
+
+ if (whence != FROM_COMMIT) {
+ if (cleanup_mode == CLEANUP_SCISSORS)
+ wt_status_add_cut_line(s->fp);
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ whence == FROM_MERGE
+ ? _("\n"
+ "It looks like you may be committing a merge.\n"
+ "If this is not correct, please remove the file\n"
+ " %s\n"
+ "and try again.\n")
+ : _("\n"
+ "It looks like you may be committing a cherry-pick.\n"
+ "If this is not correct, please remove the file\n"
+ " %s\n"
+ "and try again.\n"),
+ git_path(whence == FROM_MERGE
+ ? "MERGE_HEAD"
+ : "CHERRY_PICK_HEAD"));
+ }
+
+ fprintf(s->fp, "\n");
+ if (cleanup_mode == CLEANUP_ALL)
+ status_printf(s, GIT_COLOR_NORMAL,
+ _("Please enter the commit message for your changes."
+ " Lines starting\nwith '%c' will be ignored, and an empty"
+ " message aborts the commit.\n"), comment_line_char);
+ else if (cleanup_mode == CLEANUP_SCISSORS && whence == FROM_COMMIT)
+ wt_status_add_cut_line(s->fp);
+ else /* CLEANUP_SPACE, that is. */
+ status_printf(s, GIT_COLOR_NORMAL,
+ _("Please enter the commit message for your changes."
+ " Lines starting\n"
+ "with '%c' will be kept; you may remove them"
+ " yourself if you want to.\n"
+ "An empty message aborts the commit.\n"), comment_line_char);
+ if (only_include_assumed)
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ "%s", only_include_assumed);
+
+ /*
+ * These should never fail because they come from our own
+ * fmt_ident. They may fail the sane_ident test, but we know
+ * that the name and mail pointers will at least be valid,
+ * which is enough for our tests and printing here.
+ */
+ assert_split_ident(&ai, author_ident);
+ assert_split_ident(&ci, &committer_ident);
+
+ if (ident_cmp(&ai, &ci))
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ _("%s"
+ "Author: %.*s <%.*s>"),
+ ident_shown++ ? "" : "\n",
+ (int)(ai.name_end - ai.name_begin), ai.name_begin,
+ (int)(ai.mail_end - ai.mail_begin), ai.mail_begin);
+
+ if (author_date_is_interesting())
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ _("%s"
+ "Date: %s"),
+ ident_shown++ ? "" : "\n",
+ show_ident_date(&ai, DATE_NORMAL));
+
+ if (!committer_ident_sufficiently_given())
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ _("%s"
+ "Committer: %.*s <%.*s>"),
+ ident_shown++ ? "" : "\n",
+ (int)(ci.name_end - ci.name_begin), ci.name_begin,
+ (int)(ci.mail_end - ci.mail_begin), ci.mail_begin);
+
+ if (ident_shown)
+ status_printf_ln(s, GIT_COLOR_NORMAL, "%s", "");
+
+ saved_color_setting = s->use_color;
+ s->use_color = 0;
+ commitable = run_status(s->fp, index_file, prefix, 1, s);
+ s->use_color = saved_color_setting;
+ } else {
+ unsigned char sha1[20];
+ const char *parent = "HEAD";
+
+ if (!active_nr && read_cache() < 0)
+ die(_("Cannot read index"));
+
+ if (amend)
+ parent = "HEAD^1";
+
+ if (get_sha1(parent, sha1))
+ commitable = !!active_nr;
+ else {
+ /*
+ * Unless the user did explicitly request a submodule
+ * ignore mode by passing a command line option we do
+ * not ignore any changed submodule SHA-1s when
+ * comparing index and parent, no matter what is
+ * configured. Otherwise we won't commit any
+ * submodules which were manually staged, which would
+ * be really confusing.
+ */
+ int diff_flags = DIFF_OPT_OVERRIDE_SUBMODULE_CONFIG;
+ if (ignore_submodule_arg &&
+ !strcmp(ignore_submodule_arg, "all"))
+ diff_flags |= DIFF_OPT_IGNORE_SUBMODULES;
+ commitable = index_differs_from(parent, diff_flags);
+ }
+ }
+ strbuf_release(&committer_ident);
+
+ fclose(s->fp);
+
+ /*
+ * Reject an attempt to record a non-merge empty commit without
+ * explicit --allow-empty. In the cherry-pick case, it may be
+ * empty due to conflict resolution, which the user should okay.
+ */
+ if (!commitable && whence != FROM_MERGE && !allow_empty &&
+ !(amend && is_a_merge(current_head))) {
+ s->display_comment_prefix = old_display_comment_prefix;
+ run_status(stdout, index_file, prefix, 0, s);
+ if (amend)
+ fputs(_(empty_amend_advice), stderr);
+ else if (whence == FROM_CHERRY_PICK) {
+ fputs(_(empty_cherry_pick_advice), stderr);
+ if (!sequencer_in_use)
+ fputs(_(empty_cherry_pick_advice_single), stderr);
+ else
+ fputs(_(empty_cherry_pick_advice_multi), stderr);
+ }
+ return 0;
+ }
+
+ /*
+ * Re-read the index as pre-commit hook could have updated it,
+ * and write it out as a tree. We must do this before we invoke
+ * the editor and after we invoke run_status above.
+ */
+ discard_cache();
+ read_cache_from(index_file);
+ if (update_main_cache_tree(0)) {
+ error(_("Error building trees"));
+ return 0;
+ }
+
+ if (run_commit_hook(use_editor, index_file, "prepare-commit-msg",
+ git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
+ return 0;
+
+ if (use_editor) {
+ char index[PATH_MAX];
+ const char *env[2] = { NULL };
+ env[0] = index;
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ if (launch_editor(git_path(commit_editmsg), NULL, env)) {
+ fprintf(stderr,
+ _("Please supply the message using either -m or -F option.\n"));
+ exit(1);
+ }
+ }
+
+ if (!no_verify &&
+ run_commit_hook(use_editor, index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
+ return 0;
+ }
+
+ return 1;
+}
+
+static int rest_is_empty(struct strbuf *sb, int start)
+{
+ int i, eol;
+ const char *nl;
+
+ /* Check if the rest is just whitespace and Signed-of-by's. */
+ for (i = start; i < sb->len; i++) {
+ nl = memchr(sb->buf + i, '\n', sb->len - i);
+ if (nl)
+ eol = nl - sb->buf;
+ else
+ eol = sb->len;
+
+ if (strlen(sign_off_header) <= eol - i &&
+ starts_with(sb->buf + i, sign_off_header)) {
+ i = eol;
+ continue;
+ }
+ while (i < eol)
+ if (!isspace(sb->buf[i++]))
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Find out if the message in the strbuf contains only whitespace and
+ * Signed-off-by lines.
+ */
+static int message_is_empty(struct strbuf *sb)
+{
+ if (cleanup_mode == CLEANUP_NONE && sb->len)
+ return 0;
+ return rest_is_empty(sb, 0);
+}
+
+/*
+ * See if the user edited the message in the editor or left what
+ * was in the template intact
+ */
+static int template_untouched(struct strbuf *sb)
+{
+ struct strbuf tmpl = STRBUF_INIT;
+ const char *start;
+
+ if (cleanup_mode == CLEANUP_NONE && sb->len)
+ return 0;
+
+ if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0)
+ return 0;
+
+ stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
+ if (!skip_prefix(sb->buf, tmpl.buf, &start))
+ start = sb->buf;
+ strbuf_release(&tmpl);
+ return rest_is_empty(sb, start - sb->buf);
+}
+
+static const char *find_author_by_nickname(const char *name)
+{
+ struct rev_info revs;
+ struct commit *commit;
+ struct strbuf buf = STRBUF_INIT;
+ struct string_list mailmap = STRING_LIST_INIT_NODUP;
+ const char *av[20];
+ int ac = 0;
+
+ init_revisions(&revs, NULL);
+ strbuf_addf(&buf, "--author=%s", name);
+ av[++ac] = "--all";
+ av[++ac] = "-i";
+ av[++ac] = buf.buf;
+ av[++ac] = NULL;
+ setup_revisions(ac, av, &revs, NULL);
+ revs.mailmap = &mailmap;
+ read_mailmap(revs.mailmap, NULL);
+
+ if (prepare_revision_walk(&revs))
+ die(_("revision walk setup failed"));
+ commit = get_revision(&revs);
+ if (commit) {
+ struct pretty_print_context ctx = {0};
+ ctx.date_mode = DATE_NORMAL;
+ strbuf_release(&buf);
+ format_commit_message(commit, "%aN <%aE>", &buf, &ctx);
+ clear_mailmap(&mailmap);
+ return strbuf_detach(&buf, NULL);
+ }
+ die(_("--author '%s' is not 'Name <email>' and matches no existing author"), name);
+}
+
+
+static void handle_untracked_files_arg(struct wt_status *s)
+{
+ if (!untracked_files_arg)
+ ; /* default already initialized */
+ else if (!strcmp(untracked_files_arg, "no"))
+ s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
+ else if (!strcmp(untracked_files_arg, "normal"))
+ s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
+ else if (!strcmp(untracked_files_arg, "all"))
+ s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
+ else
+ die(_("Invalid untracked files mode '%s'"), untracked_files_arg);
+}
+
+static const char *read_commit_message(const char *name)
+{
+ const char *out_enc;
+ struct commit *commit;
+
+ commit = lookup_commit_reference_by_name(name);
+ if (!commit)
+ die(_("could not lookup commit %s"), name);
+ out_enc = get_commit_output_encoding();
+ return logmsg_reencode(commit, NULL, out_enc);
+}
+
+/*
+ * Enumerate what needs to be propagated when --porcelain
+ * is not in effect here.
+ */
+static struct status_deferred_config {
+ enum status_format status_format;
+ int show_branch;
+} status_deferred_config = {
+ STATUS_FORMAT_UNSPECIFIED,
+ -1 /* unspecified */
+};
+
+static void finalize_deferred_config(struct wt_status *s)
+{
+ int use_deferred_config = (status_format != STATUS_FORMAT_PORCELAIN &&
+ !s->null_termination);
+
+ if (s->null_termination) {
+ if (status_format == STATUS_FORMAT_NONE ||
+ status_format == STATUS_FORMAT_UNSPECIFIED)
+ status_format = STATUS_FORMAT_PORCELAIN;
+ else if (status_format == STATUS_FORMAT_LONG)
+ die(_("--long and -z are incompatible"));
+ }
+
+ if (use_deferred_config && status_format == STATUS_FORMAT_UNSPECIFIED)
+ status_format = status_deferred_config.status_format;
+ if (status_format == STATUS_FORMAT_UNSPECIFIED)
+ status_format = STATUS_FORMAT_NONE;
+
+ if (use_deferred_config && s->show_branch < 0)
+ s->show_branch = status_deferred_config.show_branch;
+ if (s->show_branch < 0)
+ s->show_branch = 0;
+}
+
+static int parse_and_validate_options(int argc, const char *argv[],
+ const struct option *options,
+ const char * const usage[],
+ const char *prefix,
+ struct commit *current_head,
+ struct wt_status *s)
+{
+ int f = 0;
+
+ argc = parse_options(argc, argv, prefix, options, usage, 0);
+ finalize_deferred_config(s);
+
+ if (force_author && !strchr(force_author, '>'))
+ force_author = find_author_by_nickname(force_author);
+
+ if (force_author && renew_authorship)
+ die(_("Using both --reset-author and --author does not make sense"));
+
+ if (logfile || have_option_m || use_message || fixup_message)
+ use_editor = 0;
+ if (0 <= edit_flag)
+ use_editor = edit_flag;
+
+ /* Sanity check options */
+ if (amend && !current_head)
+ die(_("You have nothing to amend."));
+ if (amend && whence != FROM_COMMIT) {
+ if (whence == FROM_MERGE)
+ die(_("You are in the middle of a merge -- cannot amend."));
+ else if (whence == FROM_CHERRY_PICK)
+ die(_("You are in the middle of a cherry-pick -- cannot amend."));
+ }
+ if (fixup_message && squash_message)
+ die(_("Options --squash and --fixup cannot be used together"));
+ if (use_message)
+ f++;
+ if (edit_message)
+ f++;
+ if (fixup_message)
+ f++;
+ if (logfile)
+ f++;
+ if (f > 1)
+ die(_("Only one of -c/-C/-F/--fixup can be used."));
+ if (message.len && f > 0)
+ die((_("Option -m cannot be combined with -c/-C/-F/--fixup.")));
+ if (f || message.len)
+ template_file = NULL;
+ if (edit_message)
+ use_message = edit_message;
+ if (amend && !use_message && !fixup_message)
+ use_message = "HEAD";
+ if (!use_message && whence != FROM_CHERRY_PICK && renew_authorship)
+ die(_("--reset-author can be used only with -C, -c or --amend."));
+ if (use_message) {
+ use_message_buffer = read_commit_message(use_message);
+ if (!renew_authorship) {
+ author_message = use_message;
+ author_message_buffer = use_message_buffer;
+ }
+ }
+ if (whence == FROM_CHERRY_PICK && !renew_authorship) {
+ author_message = "CHERRY_PICK_HEAD";
+ author_message_buffer = read_commit_message(author_message);
+ }
+
+ if (patch_interactive)
+ interactive = 1;
+
+ if (also + only + all + interactive > 1)
+ die(_("Only one of --include/--only/--all/--interactive/--patch can be used."));
+ if (argc == 0 && (also || (only && !amend)))
+ die(_("No paths with --include/--only does not make sense."));
+ if (argc == 0 && only && amend)
+ only_include_assumed = _("Clever... amending the last one with dirty index.");
+ if (argc > 0 && !also && !only)
+ only_include_assumed = _("Explicit paths specified without -i or -o; assuming --only paths...");
+ if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
+ cleanup_mode = use_editor ? CLEANUP_ALL : CLEANUP_SPACE;
+ else if (!strcmp(cleanup_arg, "verbatim"))
+ cleanup_mode = CLEANUP_NONE;
+ else if (!strcmp(cleanup_arg, "whitespace"))
+ cleanup_mode = CLEANUP_SPACE;
+ else if (!strcmp(cleanup_arg, "strip"))
+ cleanup_mode = CLEANUP_ALL;
+ else if (!strcmp(cleanup_arg, "scissors"))
+ cleanup_mode = use_editor ? CLEANUP_SCISSORS : CLEANUP_SPACE;
+ else
+ die(_("Invalid cleanup mode %s"), cleanup_arg);
+
+ handle_untracked_files_arg(s);
+
+ if (all && argc > 0)
+ die(_("Paths with -a does not make sense."));
+
+ if (status_format != STATUS_FORMAT_NONE)
+ dry_run = 1;
+
+ return argc;
+}
+
+static int dry_run_commit(int argc, const char **argv, const char *prefix,
+ const struct commit *current_head, struct wt_status *s)
+{
+ int commitable;
+ const char *index_file;
+
+ index_file = prepare_index(argc, argv, prefix, current_head, 1);
+ commitable = run_status(stdout, index_file, prefix, 0, s);
+ rollback_index_files();
+
+ return commitable ? 0 : 1;
+}
+
+static int parse_status_slot(const char *slot)
+{
+ if (!strcasecmp(slot, "header"))
+ return WT_STATUS_HEADER;
+ if (!strcasecmp(slot, "branch"))
+ return WT_STATUS_ONBRANCH;
+ if (!strcasecmp(slot, "updated") || !strcasecmp(slot, "added"))
+ return WT_STATUS_UPDATED;
+ if (!strcasecmp(slot, "changed"))
+ return WT_STATUS_CHANGED;
+ if (!strcasecmp(slot, "untracked"))
+ return WT_STATUS_UNTRACKED;
+ if (!strcasecmp(slot, "nobranch"))
+ return WT_STATUS_NOBRANCH;
+ if (!strcasecmp(slot, "unmerged"))
+ return WT_STATUS_UNMERGED;
+ return -1;
+}
+
+static int git_status_config(const char *k, const char *v, void *cb)
+{
+ struct wt_status *s = cb;
+ const char *slot_name;
+
+ if (starts_with(k, "column."))
+ return git_column_config(k, v, "status", &s->colopts);
+ if (!strcmp(k, "status.submodulesummary")) {
+ int is_bool;
+ s->submodule_summary = git_config_bool_or_int(k, v, &is_bool);
+ if (is_bool && s->submodule_summary)
+ s->submodule_summary = -1;
+ return 0;
+ }
+ if (!strcmp(k, "status.short")) {
+ if (git_config_bool(k, v))
+ status_deferred_config.status_format = STATUS_FORMAT_SHORT;
+ else
+ status_deferred_config.status_format = STATUS_FORMAT_NONE;
+ return 0;
+ }
+ if (!strcmp(k, "status.branch")) {
+ status_deferred_config.show_branch = git_config_bool(k, v);
+ return 0;
+ }
+ if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
+ s->use_color = git_config_colorbool(k, v);
+ return 0;
+ }
+ if (!strcmp(k, "status.displaycommentprefix")) {
+ s->display_comment_prefix = git_config_bool(k, v);
+ return 0;
+ }
+ if (skip_prefix(k, "status.color.", &slot_name) ||
+ skip_prefix(k, "color.status.", &slot_name)) {
+ int slot = parse_status_slot(slot_name);
+ if (slot < 0)
+ return 0;
+ if (!v)
+ return config_error_nonbool(k);
+ return color_parse(v, s->color_palette[slot]);
+ }
+ if (!strcmp(k, "status.relativepaths")) {
+ s->relative_paths = git_config_bool(k, v);
+ return 0;
+ }
+ if (!strcmp(k, "status.showuntrackedfiles")) {
+ if (!v)
+ return config_error_nonbool(k);
+ else if (!strcmp(v, "no"))
+ s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
+ else if (!strcmp(v, "normal"))
+ s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
+ else if (!strcmp(v, "all"))
+ s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
+ else
+ return error(_("Invalid untracked files mode '%s'"), v);
+ return 0;
+ }
+ return git_diff_ui_config(k, v, NULL);
+}
+
+int cmd_status(int argc, const char **argv, const char *prefix)
+{
+ static struct wt_status s;
+ int fd;
+ unsigned char sha1[20];
+ static struct option builtin_status_options[] = {
+ OPT__VERBOSE(&verbose, N_("be verbose")),
+ OPT_SET_INT('s', "short", &status_format,
+ N_("show status concisely"), STATUS_FORMAT_SHORT),
+ OPT_BOOL('b', "branch", &s.show_branch,
+ N_("show branch information")),
+ OPT_SET_INT(0, "porcelain", &status_format,
+ N_("machine-readable output"),
+ STATUS_FORMAT_PORCELAIN),
+ OPT_SET_INT(0, "long", &status_format,
+ N_("show status in long format (default)"),
+ STATUS_FORMAT_LONG),
+ OPT_BOOL('z', "null", &s.null_termination,
+ N_("terminate entries with NUL")),
+ { OPTION_STRING, 'u', "untracked-files", &untracked_files_arg,
+ N_("mode"),
+ N_("show untracked files, optional modes: all, normal, no. (Default: all)"),
+ PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
+ OPT_BOOL(0, "ignored", &show_ignored_in_status,
+ N_("show ignored files")),
+ { OPTION_STRING, 0, "ignore-submodules", &ignore_submodule_arg, N_("when"),
+ N_("ignore changes to submodules, optional when: all, dirty, untracked. (Default: all)"),
+ PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
+ OPT_COLUMN(0, "column", &s.colopts, N_("list untracked files in columns")),
+ OPT_END(),
+ };
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_status_usage, builtin_status_options);
+
+ status_init_config(&s, git_status_config);
+ argc = parse_options(argc, argv, prefix,
+ builtin_status_options,
+ builtin_status_usage, 0);
+ finalize_colopts(&s.colopts, -1);
+ finalize_deferred_config(&s);
+
+ handle_untracked_files_arg(&s);
+ if (show_ignored_in_status)
+ s.show_ignored_files = 1;
+ parse_pathspec(&s.pathspec, 0,
+ PATHSPEC_PREFER_FULL,
+ prefix, argv);
+
+ read_cache_preload(&s.pathspec);
+ refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, &s.pathspec, NULL, NULL);
+
+ fd = hold_locked_index(&index_lock, 0);
+ if (0 <= fd)
+ update_index_if_able(&the_index, &index_lock);
+
+ s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
+ s.ignore_submodule_arg = ignore_submodule_arg;
+ wt_status_collect(&s);
+
+ if (s.relative_paths)
+ s.prefix = prefix;
+
+ switch (status_format) {
+ case STATUS_FORMAT_SHORT:
+ wt_shortstatus_print(&s);
+ break;
+ case STATUS_FORMAT_PORCELAIN:
+ wt_porcelain_print(&s);
+ break;
+ case STATUS_FORMAT_UNSPECIFIED:
+ die("BUG: finalize_deferred_config() should have been called");
+ break;
+ case STATUS_FORMAT_NONE:
+ case STATUS_FORMAT_LONG:
+ s.verbose = verbose;
+ s.ignore_submodule_arg = ignore_submodule_arg;
+ wt_status_print(&s);
+ break;
+ }
+ return 0;
+}
+
+static const char *implicit_ident_advice(void)
+{
+ char *user_config = expand_user_path("~/.gitconfig");
+ char *xdg_config = xdg_config_home("config");
+ int config_exists = file_exists(user_config) || file_exists(xdg_config);
+
+ free(user_config);
+ free(xdg_config);
+
+ if (config_exists)
+ return _(implicit_ident_advice_config);
+ else
+ return _(implicit_ident_advice_noconfig);
+
+}
+
+static void print_summary(const char *prefix, const unsigned char *sha1,
+ int initial_commit)
+{
+ struct rev_info rev;
+ struct commit *commit;
+ struct strbuf format = STRBUF_INIT;
+ unsigned char junk_sha1[20];
+ const char *head;
+ struct pretty_print_context pctx = {0};
+ struct strbuf author_ident = STRBUF_INIT;
+ struct strbuf committer_ident = STRBUF_INIT;
+
+ commit = lookup_commit(sha1);
+ if (!commit)
+ die(_("couldn't look up newly created commit"));
+ if (parse_commit(commit))
+ die(_("could not parse newly created commit"));
+
+ strbuf_addstr(&format, "format:%h] %s");
+
+ format_commit_message(commit, "%an <%ae>", &author_ident, &pctx);
+ format_commit_message(commit, "%cn <%ce>", &committer_ident, &pctx);
+ if (strbuf_cmp(&author_ident, &committer_ident)) {
+ strbuf_addstr(&format, "\n Author: ");
+ strbuf_addbuf_percentquote(&format, &author_ident);
+ }
+ if (author_date_is_interesting()) {
+ struct strbuf date = STRBUF_INIT;
+ format_commit_message(commit, "%ad", &date, &pctx);
+ strbuf_addstr(&format, "\n Date: ");
+ strbuf_addbuf_percentquote(&format, &date);
+ strbuf_release(&date);
+ }
+ if (!committer_ident_sufficiently_given()) {
+ strbuf_addstr(&format, "\n Committer: ");
+ strbuf_addbuf_percentquote(&format, &committer_ident);
+ if (advice_implicit_identity) {
+ strbuf_addch(&format, '\n');
+ strbuf_addstr(&format, implicit_ident_advice());
+ }
+ }
+ strbuf_release(&author_ident);
+ strbuf_release(&committer_ident);
+
+ init_revisions(&rev, prefix);
+ setup_revisions(0, NULL, &rev, NULL);
+
+ rev.diff = 1;
+ rev.diffopt.output_format =
+ DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
+
+ rev.verbose_header = 1;
+ rev.show_root_diff = 1;
+ get_commit_format(format.buf, &rev);
+ rev.always_show_header = 0;
+ rev.diffopt.detect_rename = 1;
+ rev.diffopt.break_opt = 0;
+ diff_setup_done(&rev.diffopt);
+
+ head = resolve_ref_unsafe("HEAD", 0, junk_sha1, NULL);
+ if (!strcmp(head, "HEAD"))
+ head = _("detached HEAD");
+ else
+ skip_prefix(head, "refs/heads/", &head);
+ printf("[%s%s ", head, initial_commit ? _(" (root-commit)") : "");
+
+ if (!log_tree_commit(&rev, commit)) {
+ rev.always_show_header = 1;
+ rev.use_terminator = 1;
+ log_tree_commit(&rev, commit);
+ }
+
+ strbuf_release(&format);
+}
+
+static int git_commit_config(const char *k, const char *v, void *cb)
+{
+ struct wt_status *s = cb;
+ int status;
+
+ if (!strcmp(k, "commit.template"))
+ return git_config_pathname(&template_file, k, v);
+ if (!strcmp(k, "commit.status")) {
+ include_status = git_config_bool(k, v);
+ return 0;
+ }
+ if (!strcmp(k, "commit.cleanup"))
+ return git_config_string(&cleanup_arg, k, v);
+ if (!strcmp(k, "commit.gpgsign")) {
+ sign_commit = git_config_bool(k, v) ? "" : NULL;
+ return 0;
+ }
+
+ status = git_gpg_config(k, v, NULL);
+ if (status)
+ return status;
+ return git_status_config(k, v, s);
+}
+
+static int run_rewrite_hook(const unsigned char *oldsha1,
+ const unsigned char *newsha1)
+{
+ /* oldsha1 SP newsha1 LF NUL */
+ static char buf[2*40 + 3];
+ struct child_process proc = CHILD_PROCESS_INIT;
+ const char *argv[3];
+ int code;
+ size_t n;
+
+ argv[0] = find_hook("post-rewrite");
+ if (!argv[0])
+ return 0;
+
+ argv[1] = "amend";
+ argv[2] = NULL;
+
+ proc.argv = argv;
+ proc.in = -1;
+ proc.stdout_to_stderr = 1;
+
+ code = start_command(&proc);
+ if (code)
+ return code;
+ n = snprintf(buf, sizeof(buf), "%s %s\n",
+ sha1_to_hex(oldsha1), sha1_to_hex(newsha1));
+ write_in_full(proc.in, buf, n);
+ close(proc.in);
+ return finish_command(&proc);
+}
+
+int run_commit_hook(int editor_is_used, const char *index_file, const char *name, ...)
+{
+ const char *hook_env[3] = { NULL };
+ char index[PATH_MAX];
+ va_list args;
+ int ret;
+
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ hook_env[0] = index;
+
+ /*
+ * Let the hook know that no editor will be launched.
+ */
+ if (!editor_is_used)
+ hook_env[1] = "GIT_EDITOR=:";
+
+ va_start(args, name);
+ ret = run_hook_ve(hook_env, name, args);
+ va_end(args);
+
+ return ret;
+}
+
+int cmd_commit(int argc, const char **argv, const char *prefix)
+{
+ static struct wt_status s;
+ static struct option builtin_commit_options[] = {
+ OPT__QUIET(&quiet, N_("suppress summary after successful commit")),
+ OPT__VERBOSE(&verbose, N_("show diff in commit message template")),
+
+ OPT_GROUP(N_("Commit message options")),
+ OPT_FILENAME('F', "file", &logfile, N_("read message from file")),
+ OPT_STRING(0, "author", &force_author, N_("author"), N_("override author for commit")),
+ OPT_STRING(0, "date", &force_date, N_("date"), N_("override date for commit")),
+ OPT_CALLBACK('m', "message", &message, N_("message"), N_("commit message"), opt_parse_m),
+ OPT_STRING('c', "reedit-message", &edit_message, N_("commit"), N_("reuse and edit message from specified commit")),
+ OPT_STRING('C', "reuse-message", &use_message, N_("commit"), N_("reuse message from specified commit")),
+ OPT_STRING(0, "fixup", &fixup_message, N_("commit"), N_("use autosquash formatted message to fixup specified commit")),
+ OPT_STRING(0, "squash", &squash_message, N_("commit"), N_("use autosquash formatted message to squash specified commit")),
+ OPT_BOOL(0, "reset-author", &renew_authorship, N_("the commit is authored by me now (used with -C/-c/--amend)")),
+ OPT_BOOL('s', "signoff", &signoff, N_("add Signed-off-by:")),
+ OPT_FILENAME('t', "template", &template_file, N_("use specified template file")),
+ OPT_BOOL('e', "edit", &edit_flag, N_("force edit of commit")),
+ OPT_STRING(0, "cleanup", &cleanup_arg, N_("default"), N_("how to strip spaces and #comments from message")),
+ OPT_BOOL(0, "status", &include_status, N_("include status in commit message template")),
+ { OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key-id"),
+ N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
+ /* end commit message options */
+
+ OPT_GROUP(N_("Commit contents options")),
+ OPT_BOOL('a', "all", &all, N_("commit all changed files")),
+ OPT_BOOL('i', "include", &also, N_("add specified files to index for commit")),
+ OPT_BOOL(0, "interactive", &interactive, N_("interactively add files")),
+ OPT_BOOL('p', "patch", &patch_interactive, N_("interactively add changes")),
+ OPT_BOOL('o', "only", &only, N_("commit only specified files")),
+ OPT_BOOL('n', "no-verify", &no_verify, N_("bypass pre-commit hook")),
+ OPT_BOOL(0, "dry-run", &dry_run, N_("show what would be committed")),
+ OPT_SET_INT(0, "short", &status_format, N_("show status concisely"),
+ STATUS_FORMAT_SHORT),
+ OPT_BOOL(0, "branch", &s.show_branch, N_("show branch information")),
+ OPT_SET_INT(0, "porcelain", &status_format,
+ N_("machine-readable output"), STATUS_FORMAT_PORCELAIN),
+ OPT_SET_INT(0, "long", &status_format,
+ N_("show status in long format (default)"),
+ STATUS_FORMAT_LONG),
+ OPT_BOOL('z', "null", &s.null_termination,
+ N_("terminate entries with NUL")),
+ OPT_BOOL(0, "amend", &amend, N_("amend previous commit")),
+ OPT_BOOL(0, "no-post-rewrite", &no_post_rewrite, N_("bypass post-rewrite hook")),
+ { OPTION_STRING, 'u', "untracked-files", &untracked_files_arg, N_("mode"), N_("show untracked files, optional modes: all, normal, no. (Default: all)"), PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
+ /* end commit contents options */
+
+ OPT_HIDDEN_BOOL(0, "allow-empty", &allow_empty,
+ N_("ok to record an empty change")),
+ OPT_HIDDEN_BOOL(0, "allow-empty-message", &allow_empty_message,
+ N_("ok to record a change with an empty message")),
+
+ OPT_END()
+ };
+
+ struct strbuf sb = STRBUF_INIT;
+ struct strbuf author_ident = STRBUF_INIT;
+ const char *index_file, *reflog_msg;
+ char *nl;
+ unsigned char sha1[20];
+ struct commit_list *parents = NULL, **pptr = &parents;
+ struct stat statbuf;
+ struct commit *current_head = NULL;
+ struct commit_extra_header *extra = NULL;
+ struct ref_transaction *transaction;
+ struct strbuf err = STRBUF_INIT;
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_commit_usage, builtin_commit_options);
+
+ status_init_config(&s, git_commit_config);
+ status_format = STATUS_FORMAT_NONE; /* Ignore status.short */
+ s.colopts = 0;
+
+ if (get_sha1("HEAD", sha1))
+ current_head = NULL;
+ else {
+ current_head = lookup_commit_or_die(sha1, "HEAD");
+ if (parse_commit(current_head))
+ die(_("could not parse HEAD commit"));
+ }
+ argc = parse_and_validate_options(argc, argv, builtin_commit_options,
+ builtin_commit_usage,
+ prefix, current_head, &s);
+ if (dry_run)
+ return dry_run_commit(argc, argv, prefix, current_head, &s);
+ index_file = prepare_index(argc, argv, prefix, current_head, 0);
+
+ /* Set up everything for writing the commit object. This includes
+ running hooks, writing the trees, and interacting with the user. */
+ if (!prepare_to_commit(index_file, prefix,
+ current_head, &s, &author_ident)) {
+ rollback_index_files();
+ return 1;
+ }
+
+ /* Determine parents */
+ reflog_msg = getenv("GIT_REFLOG_ACTION");
+ if (!current_head) {
+ if (!reflog_msg)
+ reflog_msg = "commit (initial)";
+ } else if (amend) {
+ struct commit_list *c;
+
+ if (!reflog_msg)
+ reflog_msg = "commit (amend)";
+ for (c = current_head->parents; c; c = c->next)
+ pptr = &commit_list_insert(c->item, pptr)->next;
+ } else if (whence == FROM_MERGE) {
+ struct strbuf m = STRBUF_INIT;
+ FILE *fp;
+ int allow_fast_forward = 1;
+
+ if (!reflog_msg)
+ reflog_msg = "commit (merge)";
+ pptr = &commit_list_insert(current_head, pptr)->next;
+ fp = fopen(git_path("MERGE_HEAD"), "r");
+ if (fp == NULL)
+ die_errno(_("could not open '%s' for reading"),
+ git_path("MERGE_HEAD"));
+ while (strbuf_getline(&m, fp, '\n') != EOF) {
+ struct commit *parent;
+
+ parent = get_merge_parent(m.buf);
+ if (!parent)
+ die(_("Corrupt MERGE_HEAD file (%s)"), m.buf);
+ pptr = &commit_list_insert(parent, pptr)->next;
+ }
+ fclose(fp);
+ strbuf_release(&m);
+ if (!stat(git_path("MERGE_MODE"), &statbuf)) {
+ if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0)
+ die_errno(_("could not read MERGE_MODE"));
+ if (!strcmp(sb.buf, "no-ff"))
+ allow_fast_forward = 0;
+ }
+ if (allow_fast_forward)
+ parents = reduce_heads(parents);
+ } else {
+ if (!reflog_msg)
+ reflog_msg = (whence == FROM_CHERRY_PICK)
+ ? "commit (cherry-pick)"
+ : "commit";
+ pptr = &commit_list_insert(current_head, pptr)->next;
+ }
+
+ /* Finally, get the commit message */
+ strbuf_reset(&sb);
+ if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
+ int saved_errno = errno;
+ rollback_index_files();
+ die(_("could not read commit message: %s"), strerror(saved_errno));
+ }
+
+ if (verbose || /* Truncate the message just before the diff, if any. */
+ cleanup_mode == CLEANUP_SCISSORS)
+ wt_status_truncate_message_at_cut_line(&sb);
+
+ if (cleanup_mode != CLEANUP_NONE)
+ stripspace(&sb, cleanup_mode == CLEANUP_ALL);
+ if (template_untouched(&sb) && !allow_empty_message) {
+ rollback_index_files();
+ fprintf(stderr, _("Aborting commit; you did not edit the message.\n"));
+ exit(1);
+ }
+ if (message_is_empty(&sb) && !allow_empty_message) {
+ rollback_index_files();
+ fprintf(stderr, _("Aborting commit due to empty commit message.\n"));
+ exit(1);
+ }
+
+ if (amend) {
+ const char *exclude_gpgsig[2] = { "gpgsig", NULL };
+ extra = read_commit_extra_headers(current_head, exclude_gpgsig);
+ } else {
+ struct commit_extra_header **tail = &extra;
+ append_merge_tag_headers(parents, &tail);
+ }
+
+ if (commit_tree_extended(sb.buf, sb.len, active_cache_tree->sha1,
+ parents, sha1, author_ident.buf, sign_commit, extra)) {
+ rollback_index_files();
+ die(_("failed to write commit object"));
+ }
+ strbuf_release(&author_ident);
+ free_commit_extra_headers(extra);
+
+ nl = strchr(sb.buf, '\n');
+ if (nl)
+ strbuf_setlen(&sb, nl + 1 - sb.buf);
+ else
+ strbuf_addch(&sb, '\n');
+ strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
+ strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
+
+ transaction = ref_transaction_begin(&err);
+ if (!transaction ||
+ ref_transaction_update(transaction, "HEAD", sha1,
+ current_head
+ ? current_head->object.sha1 : null_sha1,
+ 0, sb.buf, &err) ||
+ ref_transaction_commit(transaction, &err)) {
+ rollback_index_files();
+ die("%s", err.buf);
+ }
+ ref_transaction_free(transaction);
+
+ unlink(git_path("CHERRY_PICK_HEAD"));
+ unlink(git_path("REVERT_HEAD"));
+ unlink(git_path("MERGE_HEAD"));
+ unlink(git_path("MERGE_MSG"));
+ unlink(git_path("MERGE_MODE"));
+ unlink(git_path("SQUASH_MSG"));
+
+ if (commit_index_files())
+ die (_("Repository has been updated, but unable to write\n"
+ "new_index file. Check that disk is not full and quota is\n"
+ "not exceeded, and then \"git reset HEAD\" to recover."));
+
+ rerere(0);
+ run_commit_hook(use_editor, get_index_file(), "post-commit", NULL);
+ if (amend && !no_post_rewrite) {
+ struct notes_rewrite_cfg *cfg;
+ cfg = init_copy_notes_for_rewrite("amend");
+ if (cfg) {
+ /* we are amending, so current_head is not NULL */
+ copy_note_for_rewrite(cfg, current_head->object.sha1, sha1);
+ finish_copy_notes_for_rewrite(cfg, "Notes added by 'git commit --amend'");
+ }
+ run_rewrite_hook(current_head->object.sha1, sha1);
+ }
+ if (!quiet)
+ print_summary(prefix, sha1, !current_head);
+
+ strbuf_release(&err);
+ return 0;
+}
diff --git a/builtin/config.c b/builtin/config.c
new file mode 100644
index 0000000..a58f99c
--- /dev/null
+++ b/builtin/config.c
@@ -0,0 +1,695 @@
+#include "builtin.h"
+#include "cache.h"
+#include "color.h"
+#include "parse-options.h"
+#include "urlmatch.h"
+
+static const char *const builtin_config_usage[] = {
+ N_("git config [<options>]"),
+ NULL
+};
+
+static char *key;
+static regex_t *key_regexp;
+static regex_t *regexp;
+static int show_keys;
+static int use_key_regexp;
+static int do_all;
+static int do_not_match;
+static char delim = '=';
+static char key_delim = ' ';
+static char term = '\n';
+
+static int use_global_config, use_system_config, use_local_config;
+static struct git_config_source given_config_source;
+static int actions, types;
+static const char *get_color_slot, *get_colorbool_slot;
+static int end_null;
+static int respect_includes = -1;
+
+#define ACTION_GET (1<<0)
+#define ACTION_GET_ALL (1<<1)
+#define ACTION_GET_REGEXP (1<<2)
+#define ACTION_REPLACE_ALL (1<<3)
+#define ACTION_ADD (1<<4)
+#define ACTION_UNSET (1<<5)
+#define ACTION_UNSET_ALL (1<<6)
+#define ACTION_RENAME_SECTION (1<<7)
+#define ACTION_REMOVE_SECTION (1<<8)
+#define ACTION_LIST (1<<9)
+#define ACTION_EDIT (1<<10)
+#define ACTION_SET (1<<11)
+#define ACTION_SET_ALL (1<<12)
+#define ACTION_GET_COLOR (1<<13)
+#define ACTION_GET_COLORBOOL (1<<14)
+#define ACTION_GET_URLMATCH (1<<15)
+
+#define TYPE_BOOL (1<<0)
+#define TYPE_INT (1<<1)
+#define TYPE_BOOL_OR_INT (1<<2)
+#define TYPE_PATH (1<<3)
+
+static struct option builtin_config_options[] = {
+ OPT_GROUP(N_("Config file location")),
+ OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
+ OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
+ OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
+ OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
+ OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
+ OPT_GROUP(N_("Action")),
+ OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
+ OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
+ OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
+ OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
+ OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
+ OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
+ OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
+ OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
+ OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
+ OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
+ OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
+ OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
+ OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
+ OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
+ OPT_GROUP(N_("Type")),
+ OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
+ OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
+ OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
+ OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
+ OPT_GROUP(N_("Other")),
+ OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
+ OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
+ OPT_END(),
+};
+
+static void check_argc(int argc, int min, int max) {
+ if (argc >= min && argc <= max)
+ return;
+ error("wrong number of arguments");
+ usage_with_options(builtin_config_usage, builtin_config_options);
+}
+
+static int show_all_config(const char *key_, const char *value_, void *cb)
+{
+ if (value_)
+ printf("%s%c%s%c", key_, delim, value_, term);
+ else
+ printf("%s%c", key_, term);
+ return 0;
+}
+
+struct strbuf_list {
+ struct strbuf *items;
+ int nr;
+ int alloc;
+};
+
+static int format_config(struct strbuf *buf, const char *key_, const char *value_)
+{
+ int must_free_vptr = 0;
+ int must_print_delim = 0;
+ char value[256];
+ const char *vptr = value;
+
+ strbuf_init(buf, 0);
+
+ if (show_keys) {
+ strbuf_addstr(buf, key_);
+ must_print_delim = 1;
+ }
+ if (types == TYPE_INT)
+ sprintf(value, "%"PRId64,
+ git_config_int64(key_, value_ ? value_ : ""));
+ else if (types == TYPE_BOOL)
+ vptr = git_config_bool(key_, value_) ? "true" : "false";
+ else if (types == TYPE_BOOL_OR_INT) {
+ int is_bool, v;
+ v = git_config_bool_or_int(key_, value_, &is_bool);
+ if (is_bool)
+ vptr = v ? "true" : "false";
+ else
+ sprintf(value, "%d", v);
+ } else if (types == TYPE_PATH) {
+ if (git_config_pathname(&vptr, key_, value_) < 0)
+ return -1;
+ must_free_vptr = 1;
+ } else if (value_) {
+ vptr = value_;
+ } else {
+ /* Just show the key name */
+ vptr = "";
+ must_print_delim = 0;
+ }
+
+ if (must_print_delim)
+ strbuf_addch(buf, key_delim);
+ strbuf_addstr(buf, vptr);
+ strbuf_addch(buf, term);
+
+ if (must_free_vptr)
+ free((char *)vptr);
+ return 0;
+}
+
+static int collect_config(const char *key_, const char *value_, void *cb)
+{
+ struct strbuf_list *values = cb;
+
+ if (!use_key_regexp && strcmp(key_, key))
+ return 0;
+ if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
+ return 0;
+ if (regexp != NULL &&
+ (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
+ return 0;
+
+ ALLOC_GROW(values->items, values->nr + 1, values->alloc);
+
+ return format_config(&values->items[values->nr++], key_, value_);
+}
+
+static int get_value(const char *key_, const char *regex_)
+{
+ int ret = CONFIG_GENERIC_ERROR;
+ struct strbuf_list values = {NULL};
+ int i;
+
+ if (use_key_regexp) {
+ char *tl;
+
+ /*
+ * NEEDSWORK: this naive pattern lowercasing obviously does not
+ * work for more complex patterns like "^[^.]*Foo.*bar".
+ * Perhaps we should deprecate this altogether someday.
+ */
+
+ key = xstrdup(key_);
+ for (tl = key + strlen(key) - 1;
+ tl >= key && *tl != '.';
+ tl--)
+ *tl = tolower(*tl);
+ for (tl = key; *tl && *tl != '.'; tl++)
+ *tl = tolower(*tl);
+
+ key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
+ if (regcomp(key_regexp, key, REG_EXTENDED)) {
+ fprintf(stderr, "Invalid key pattern: %s\n", key_);
+ free(key_regexp);
+ key_regexp = NULL;
+ ret = CONFIG_INVALID_PATTERN;
+ goto free_strings;
+ }
+ } else {
+ if (git_config_parse_key(key_, &key, NULL)) {
+ ret = CONFIG_INVALID_KEY;
+ goto free_strings;
+ }
+ }
+
+ if (regex_) {
+ if (regex_[0] == '!') {
+ do_not_match = 1;
+ regex_++;
+ }
+
+ regexp = (regex_t*)xmalloc(sizeof(regex_t));
+ if (regcomp(regexp, regex_, REG_EXTENDED)) {
+ fprintf(stderr, "Invalid pattern: %s\n", regex_);
+ free(regexp);
+ regexp = NULL;
+ ret = CONFIG_INVALID_PATTERN;
+ goto free_strings;
+ }
+ }
+
+ git_config_with_options(collect_config, &values,
+ &given_config_source, respect_includes);
+
+ ret = !values.nr;
+
+ for (i = 0; i < values.nr; i++) {
+ struct strbuf *buf = values.items + i;
+ if (do_all || i == values.nr - 1)
+ fwrite(buf->buf, 1, buf->len, stdout);
+ strbuf_release(buf);
+ }
+ free(values.items);
+
+free_strings:
+ free(key);
+ if (key_regexp) {
+ regfree(key_regexp);
+ free(key_regexp);
+ }
+ if (regexp) {
+ regfree(regexp);
+ free(regexp);
+ }
+
+ return ret;
+}
+
+static char *normalize_value(const char *key, const char *value)
+{
+ char *normalized;
+
+ if (!value)
+ return NULL;
+
+ if (types == 0 || types == TYPE_PATH)
+ /*
+ * We don't do normalization for TYPE_PATH here: If
+ * the path is like ~/foobar/, we prefer to store
+ * "~/foobar/" in the config file, and to expand the ~
+ * when retrieving the value.
+ */
+ normalized = xstrdup(value);
+ else {
+ normalized = xmalloc(64);
+ if (types == TYPE_INT) {
+ int64_t v = git_config_int64(key, value);
+ sprintf(normalized, "%"PRId64, v);
+ }
+ else if (types == TYPE_BOOL)
+ sprintf(normalized, "%s",
+ git_config_bool(key, value) ? "true" : "false");
+ else if (types == TYPE_BOOL_OR_INT) {
+ int is_bool, v;
+ v = git_config_bool_or_int(key, value, &is_bool);
+ if (!is_bool)
+ sprintf(normalized, "%d", v);
+ else
+ sprintf(normalized, "%s", v ? "true" : "false");
+ }
+ }
+
+ return normalized;
+}
+
+static int get_color_found;
+static const char *get_color_slot;
+static const char *get_colorbool_slot;
+static char parsed_color[COLOR_MAXLEN];
+
+static int git_get_color_config(const char *var, const char *value, void *cb)
+{
+ if (!strcmp(var, get_color_slot)) {
+ if (!value)
+ config_error_nonbool(var);
+ if (color_parse(value, parsed_color) < 0)
+ return -1;
+ get_color_found = 1;
+ }
+ return 0;
+}
+
+static void get_color(const char *var, const char *def_color)
+{
+ get_color_slot = var;
+ get_color_found = 0;
+ parsed_color[0] = '\0';
+ git_config_with_options(git_get_color_config, NULL,
+ &given_config_source, respect_includes);
+
+ if (!get_color_found && def_color) {
+ if (color_parse(def_color, parsed_color) < 0)
+ die(_("unable to parse default color value"));
+ }
+
+ fputs(parsed_color, stdout);
+}
+
+static int get_colorbool_found;
+static int get_diff_color_found;
+static int get_color_ui_found;
+static int git_get_colorbool_config(const char *var, const char *value,
+ void *cb)
+{
+ if (!strcmp(var, get_colorbool_slot))
+ get_colorbool_found = git_config_colorbool(var, value);
+ else if (!strcmp(var, "diff.color"))
+ get_diff_color_found = git_config_colorbool(var, value);
+ else if (!strcmp(var, "color.ui"))
+ get_color_ui_found = git_config_colorbool(var, value);
+ return 0;
+}
+
+static int get_colorbool(const char *var, int print)
+{
+ get_colorbool_slot = var;
+ get_colorbool_found = -1;
+ get_diff_color_found = -1;
+ get_color_ui_found = -1;
+ git_config_with_options(git_get_colorbool_config, NULL,
+ &given_config_source, respect_includes);
+
+ if (get_colorbool_found < 0) {
+ if (!strcmp(get_colorbool_slot, "color.diff"))
+ get_colorbool_found = get_diff_color_found;
+ if (get_colorbool_found < 0)
+ get_colorbool_found = get_color_ui_found;
+ }
+
+ if (get_colorbool_found < 0)
+ /* default value if none found in config */
+ get_colorbool_found = GIT_COLOR_AUTO;
+
+ get_colorbool_found = want_color(get_colorbool_found);
+
+ if (print) {
+ printf("%s\n", get_colorbool_found ? "true" : "false");
+ return 0;
+ } else
+ return get_colorbool_found ? 0 : 1;
+}
+
+static void check_write(void)
+{
+ if (given_config_source.use_stdin)
+ die("writing to stdin is not supported");
+
+ if (given_config_source.blob)
+ die("writing config blobs is not supported");
+}
+
+struct urlmatch_current_candidate_value {
+ char value_is_null;
+ struct strbuf value;
+};
+
+static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
+{
+ struct string_list *values = cb;
+ struct string_list_item *item = string_list_insert(values, var);
+ struct urlmatch_current_candidate_value *matched = item->util;
+
+ if (!matched) {
+ matched = xmalloc(sizeof(*matched));
+ strbuf_init(&matched->value, 0);
+ item->util = matched;
+ } else {
+ strbuf_reset(&matched->value);
+ }
+
+ if (value) {
+ strbuf_addstr(&matched->value, value);
+ matched->value_is_null = 0;
+ } else {
+ matched->value_is_null = 1;
+ }
+ return 0;
+}
+
+static int get_urlmatch(const char *var, const char *url)
+{
+ char *section_tail;
+ struct string_list_item *item;
+ struct urlmatch_config config = { STRING_LIST_INIT_DUP };
+ struct string_list values = STRING_LIST_INIT_DUP;
+
+ config.collect_fn = urlmatch_collect_fn;
+ config.cascade_fn = NULL;
+ config.cb = &values;
+
+ if (!url_normalize(url, &config.url))
+ die("%s", config.url.err);
+
+ config.section = xstrdup_tolower(var);
+ section_tail = strchr(config.section, '.');
+ if (section_tail) {
+ *section_tail = '\0';
+ config.key = section_tail + 1;
+ show_keys = 0;
+ } else {
+ config.key = NULL;
+ show_keys = 1;
+ }
+
+ git_config_with_options(urlmatch_config_entry, &config,
+ &given_config_source, respect_includes);
+
+ for_each_string_list_item(item, &values) {
+ struct urlmatch_current_candidate_value *matched = item->util;
+ struct strbuf key = STRBUF_INIT;
+ struct strbuf buf = STRBUF_INIT;
+
+ strbuf_addstr(&key, item->string);
+ format_config(&buf, key.buf,
+ matched->value_is_null ? NULL : matched->value.buf);
+ fwrite(buf.buf, 1, buf.len, stdout);
+ strbuf_release(&key);
+ strbuf_release(&buf);
+
+ strbuf_release(&matched->value);
+ }
+ string_list_clear(&config.vars, 1);
+ string_list_clear(&values, 1);
+ free(config.url.url);
+
+ free((void *)config.section);
+ return 0;
+}
+
+static char *default_user_config(void)
+{
+ struct strbuf buf = STRBUF_INIT;
+ strbuf_addf(&buf,
+ _("# This is Git's per-user configuration file.\n"
+ "[user]\n"
+ "# Please adapt and uncomment the following lines:\n"
+ "# name = %s\n"
+ "# email = %s\n"),
+ ident_default_name(),
+ ident_default_email());
+ return strbuf_detach(&buf, NULL);
+}
+
+int cmd_config(int argc, const char **argv, const char *prefix)
+{
+ int nongit = !startup_info->have_repository;
+ char *value;
+
+ given_config_source.file = getenv(CONFIG_ENVIRONMENT);
+
+ argc = parse_options(argc, argv, prefix, builtin_config_options,
+ builtin_config_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
+
+ if (use_global_config + use_system_config + use_local_config +
+ !!given_config_source.file + !!given_config_source.blob > 1) {
+ error("only one config file at a time.");
+ usage_with_options(builtin_config_usage, builtin_config_options);
+ }
+
+ if (given_config_source.file &&
+ !strcmp(given_config_source.file, "-")) {
+ given_config_source.file = NULL;
+ given_config_source.use_stdin = 1;
+ }
+
+ if (use_global_config) {
+ char *user_config = expand_user_path("~/.gitconfig");
+ char *xdg_config = xdg_config_home("config");
+
+ if (!user_config)
+ /*
+ * It is unknown if HOME/.gitconfig exists, so
+ * we do not know if we should write to XDG
+ * location; error out even if XDG_CONFIG_HOME
+ * is set and points at a sane location.
+ */
+ die("$HOME not set");
+
+ if (access_or_warn(user_config, R_OK, 0) &&
+ xdg_config && !access_or_warn(xdg_config, R_OK, 0))
+ given_config_source.file = xdg_config;
+ else
+ given_config_source.file = user_config;
+ }
+ else if (use_system_config)
+ given_config_source.file = git_etc_gitconfig();
+ else if (use_local_config)
+ given_config_source.file = git_pathdup("config");
+ else if (given_config_source.file) {
+ if (!is_absolute_path(given_config_source.file) && prefix)
+ given_config_source.file =
+ xstrdup(prefix_filename(prefix,
+ strlen(prefix),
+ given_config_source.file));
+ }
+
+ if (respect_includes == -1)
+ respect_includes = !given_config_source.file;
+
+ if (end_null) {
+ term = '\0';
+ delim = '\n';
+ key_delim = '\n';
+ }
+
+ if (HAS_MULTI_BITS(types)) {
+ error("only one type at a time.");
+ usage_with_options(builtin_config_usage, builtin_config_options);
+ }
+
+ if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
+ error("--get-color and variable type are incoherent");
+ usage_with_options(builtin_config_usage, builtin_config_options);
+ }
+
+ if (HAS_MULTI_BITS(actions)) {
+ error("only one action at a time.");
+ usage_with_options(builtin_config_usage, builtin_config_options);
+ }
+ if (actions == 0)
+ switch (argc) {
+ case 1: actions = ACTION_GET; break;
+ case 2: actions = ACTION_SET; break;
+ case 3: actions = ACTION_SET_ALL; break;
+ default:
+ usage_with_options(builtin_config_usage, builtin_config_options);
+ }
+
+ if (actions == ACTION_LIST) {
+ check_argc(argc, 0, 0);
+ if (git_config_with_options(show_all_config, NULL,
+ &given_config_source,
+ respect_includes) < 0) {
+ if (given_config_source.file)
+ die_errno("unable to read config file '%s'",
+ given_config_source.file);
+ else
+ die("error processing config file(s)");
+ }
+ }
+ else if (actions == ACTION_EDIT) {
+ char *config_file;
+
+ check_argc(argc, 0, 0);
+ if (!given_config_source.file && nongit)
+ die("not in a git directory");
+ if (given_config_source.use_stdin)
+ die("editing stdin is not supported");
+ if (given_config_source.blob)
+ die("editing blobs is not supported");
+ git_config(git_default_config, NULL);
+ config_file = xstrdup(given_config_source.file ?
+ given_config_source.file : git_path("config"));
+ if (use_global_config) {
+ int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
+ if (fd) {
+ char *content = default_user_config();
+ write_str_in_full(fd, content);
+ free(content);
+ close(fd);
+ }
+ else if (errno != EEXIST)
+ die_errno(_("cannot create configuration file %s"), config_file);
+ }
+ launch_editor(config_file, NULL, NULL);
+ free(config_file);
+ }
+ else if (actions == ACTION_SET) {
+ int ret;
+ check_write();
+ check_argc(argc, 2, 2);
+ value = normalize_value(argv[0], argv[1]);
+ ret = git_config_set_in_file(given_config_source.file, argv[0], value);
+ if (ret == CONFIG_NOTHING_SET)
+ error("cannot overwrite multiple values with a single value\n"
+ " Use a regexp, --add or --replace-all to change %s.", argv[0]);
+ return ret;
+ }
+ else if (actions == ACTION_SET_ALL) {
+ check_write();
+ check_argc(argc, 2, 3);
+ value = normalize_value(argv[0], argv[1]);
+ return git_config_set_multivar_in_file(given_config_source.file,
+ argv[0], value, argv[2], 0);
+ }
+ else if (actions == ACTION_ADD) {
+ check_write();
+ check_argc(argc, 2, 2);
+ value = normalize_value(argv[0], argv[1]);
+ return git_config_set_multivar_in_file(given_config_source.file,
+ argv[0], value,
+ CONFIG_REGEX_NONE, 0);
+ }
+ else if (actions == ACTION_REPLACE_ALL) {
+ check_write();
+ check_argc(argc, 2, 3);
+ value = normalize_value(argv[0], argv[1]);
+ return git_config_set_multivar_in_file(given_config_source.file,
+ argv[0], value, argv[2], 1);
+ }
+ else if (actions == ACTION_GET) {
+ check_argc(argc, 1, 2);
+ return get_value(argv[0], argv[1]);
+ }
+ else if (actions == ACTION_GET_ALL) {
+ do_all = 1;
+ check_argc(argc, 1, 2);
+ return get_value(argv[0], argv[1]);
+ }
+ else if (actions == ACTION_GET_REGEXP) {
+ show_keys = 1;
+ use_key_regexp = 1;
+ do_all = 1;
+ check_argc(argc, 1, 2);
+ return get_value(argv[0], argv[1]);
+ }
+ else if (actions == ACTION_GET_URLMATCH) {
+ check_argc(argc, 2, 2);
+ return get_urlmatch(argv[0], argv[1]);
+ }
+ else if (actions == ACTION_UNSET) {
+ check_write();
+ check_argc(argc, 1, 2);
+ if (argc == 2)
+ return git_config_set_multivar_in_file(given_config_source.file,
+ argv[0], NULL, argv[1], 0);
+ else
+ return git_config_set_in_file(given_config_source.file,
+ argv[0], NULL);
+ }
+ else if (actions == ACTION_UNSET_ALL) {
+ check_write();
+ check_argc(argc, 1, 2);
+ return git_config_set_multivar_in_file(given_config_source.file,
+ argv[0], NULL, argv[1], 1);
+ }
+ else if (actions == ACTION_RENAME_SECTION) {
+ int ret;
+ check_write();
+ check_argc(argc, 2, 2);
+ ret = git_config_rename_section_in_file(given_config_source.file,
+ argv[0], argv[1]);
+ if (ret < 0)
+ return ret;
+ if (ret == 0)
+ die("No such section!");
+ }
+ else if (actions == ACTION_REMOVE_SECTION) {
+ int ret;
+ check_write();
+ check_argc(argc, 1, 1);
+ ret = git_config_rename_section_in_file(given_config_source.file,
+ argv[0], NULL);
+ if (ret < 0)
+ return ret;
+ if (ret == 0)
+ die("No such section!");
+ }
+ else if (actions == ACTION_GET_COLOR) {
+ check_argc(argc, 1, 2);
+ get_color(argv[0], argv[1]);
+ }
+ else if (actions == ACTION_GET_COLORBOOL) {
+ check_argc(argc, 1, 2);
+ if (argc == 2)
+ color_stdout_is_tty = git_config_bool("command line", argv[1]);
+ return get_colorbool(argv[0], argc == 2);
+ }
+
+ return 0;
+}
diff --git a/builtin/count-objects.c b/builtin/count-objects.c
new file mode 100644
index 0000000..e47ef0b
--- /dev/null
+++ b/builtin/count-objects.c
@@ -0,0 +1,133 @@
+/*
+ * Builtin "git count-objects".
+ *
+ * Copyright (c) 2006 Junio C Hamano
+ */
+
+#include "cache.h"
+#include "dir.h"
+#include "builtin.h"
+#include "parse-options.h"
+
+static unsigned long garbage;
+static off_t size_garbage;
+static int verbose;
+static unsigned long loose, packed, packed_loose;
+static off_t loose_size;
+
+static void real_report_garbage(const char *desc, const char *path)
+{
+ struct stat st;
+ if (!stat(path, &st))
+ size_garbage += st.st_size;
+ warning("%s: %s", desc, path);
+ garbage++;
+}
+
+static void loose_garbage(const char *path)
+{
+ if (verbose)
+ report_garbage("garbage found", path);
+}
+
+static int count_loose(const unsigned char *sha1, const char *path, void *data)
+{
+ struct stat st;
+
+ if (lstat(path, &st) || !S_ISREG(st.st_mode))
+ loose_garbage(path);
+ else {
+ loose_size += on_disk_bytes(st);
+ loose++;
+ if (verbose && has_sha1_pack(sha1))
+ packed_loose++;
+ }
+ return 0;
+}
+
+static int count_cruft(const char *basename, const char *path, void *data)
+{
+ loose_garbage(path);
+ return 0;
+}
+
+static char const * const count_objects_usage[] = {
+ N_("git count-objects [-v] [-H | --human-readable]"),
+ NULL
+};
+
+int cmd_count_objects(int argc, const char **argv, const char *prefix)
+{
+ int human_readable = 0;
+ struct option opts[] = {
+ OPT__VERBOSE(&verbose, N_("be verbose")),
+ OPT_BOOL('H', "human-readable", &human_readable,
+ N_("print sizes in human readable format")),
+ OPT_END(),
+ };
+
+ argc = parse_options(argc, argv, prefix, opts, count_objects_usage, 0);
+ /* we do not take arguments other than flags for now */
+ if (argc)
+ usage_with_options(count_objects_usage, opts);
+ if (verbose)
+ report_garbage = real_report_garbage;
+
+ for_each_loose_file_in_objdir(get_object_directory(),
+ count_loose, count_cruft, NULL, NULL);
+
+ if (verbose) {
+ struct packed_git *p;
+ unsigned long num_pack = 0;
+ off_t size_pack = 0;
+ struct strbuf loose_buf = STRBUF_INIT;
+ struct strbuf pack_buf = STRBUF_INIT;
+ struct strbuf garbage_buf = STRBUF_INIT;
+ if (!packed_git)
+ prepare_packed_git();
+ for (p = packed_git; p; p = p->next) {
+ if (!p->pack_local)
+ continue;
+ if (open_pack_index(p))
+ continue;
+ packed += p->num_objects;
+ size_pack += p->pack_size + p->index_size;
+ num_pack++;
+ }
+
+ if (human_readable) {
+ strbuf_humanise_bytes(&loose_buf, loose_size);
+ strbuf_humanise_bytes(&pack_buf, size_pack);
+ strbuf_humanise_bytes(&garbage_buf, size_garbage);
+ } else {
+ strbuf_addf(&loose_buf, "%lu",
+ (unsigned long)(loose_size / 1024));
+ strbuf_addf(&pack_buf, "%lu",
+ (unsigned long)(size_pack / 1024));
+ strbuf_addf(&garbage_buf, "%lu",
+ (unsigned long)(size_garbage / 1024));
+ }
+
+ printf("count: %lu\n", loose);
+ printf("size: %s\n", loose_buf.buf);
+ printf("in-pack: %lu\n", packed);
+ printf("packs: %lu\n", num_pack);
+ printf("size-pack: %s\n", pack_buf.buf);
+ printf("prune-packable: %lu\n", packed_loose);
+ printf("garbage: %lu\n", garbage);
+ printf("size-garbage: %s\n", garbage_buf.buf);
+ strbuf_release(&loose_buf);
+ strbuf_release(&pack_buf);
+ strbuf_release(&garbage_buf);
+ } else {
+ struct strbuf buf = STRBUF_INIT;
+ if (human_readable)
+ strbuf_humanise_bytes(&buf, loose_size);
+ else
+ strbuf_addf(&buf, "%lu kilobytes",
+ (unsigned long)(loose_size / 1024));
+ printf("%lu objects, %s\n", loose, buf.buf);
+ strbuf_release(&buf);
+ }
+ return 0;
+}
diff --git a/builtin/credential.c b/builtin/credential.c
new file mode 100644
index 0000000..0412fa0
--- /dev/null
+++ b/builtin/credential.c
@@ -0,0 +1,31 @@
+#include "git-compat-util.h"
+#include "credential.h"
+#include "builtin.h"
+
+static const char usage_msg[] =
+ "git credential [fill|approve|reject]";
+
+int cmd_credential(int argc, const char **argv, const char *prefix)
+{
+ const char *op;
+ struct credential c = CREDENTIAL_INIT;
+
+ op = argv[1];
+ if (!op)
+ usage(usage_msg);
+
+ if (credential_read(&c, stdin) < 0)
+ die("unable to read credential from stdin");
+
+ if (!strcmp(op, "fill")) {
+ credential_fill(&c);
+ credential_write(&c, stdout);
+ } else if (!strcmp(op, "approve")) {
+ credential_approve(&c);
+ } else if (!strcmp(op, "reject")) {
+ credential_reject(&c);
+ } else {
+ usage(usage_msg);
+ }
+ return 0;
+}
diff --git a/builtin/describe.c b/builtin/describe.c
new file mode 100644
index 0000000..e00a75b
--- /dev/null
+++ b/builtin/describe.c
@@ -0,0 +1,482 @@
+#include "cache.h"
+#include "lockfile.h"
+#include "commit.h"
+#include "tag.h"
+#include "refs.h"
+#include "builtin.h"
+#include "exec_cmd.h"
+#include "parse-options.h"
+#include "diff.h"
+#include "hashmap.h"
+#include "argv-array.h"
+
+#define SEEN (1u << 0)
+#define MAX_TAGS (FLAG_BITS - 1)
+
+static const char * const describe_usage[] = {
+ N_("git describe [<options>] [<commit-ish>...]"),
+ N_("git describe [<options>] --dirty"),
+ NULL
+};
+
+static int debug; /* Display lots of verbose info */
+static int all; /* Any valid ref can be used */
+static int tags; /* Allow lightweight tags */
+static int longformat;
+static int first_parent;
+static int abbrev = -1; /* unspecified */
+static int max_candidates = 10;
+static struct hashmap names;
+static int have_util;
+static const char *pattern;
+static int always;
+static const char *dirty;
+
+/* diff-index command arguments to check if working tree is dirty. */
+static const char *diff_index_args[] = {
+ "diff-index", "--quiet", "HEAD", "--", NULL
+};
+
+struct commit_name {
+ struct hashmap_entry entry;
+ unsigned char peeled[20];
+ struct tag *tag;
+ unsigned prio:2; /* annotated tag = 2, tag = 1, head = 0 */
+ unsigned name_checked:1;
+ unsigned char sha1[20];
+ char *path;
+};
+
+static const char *prio_names[] = {
+ "head", "lightweight", "annotated",
+};
+
+static int commit_name_cmp(const struct commit_name *cn1,
+ const struct commit_name *cn2, const void *peeled)
+{
+ return hashcmp(cn1->peeled, peeled ? peeled : cn2->peeled);
+}
+
+static inline struct commit_name *find_commit_name(const unsigned char *peeled)
+{
+ return hashmap_get_from_hash(&names, sha1hash(peeled), peeled);
+}
+
+static int replace_name(struct commit_name *e,
+ int prio,
+ const unsigned char *sha1,
+ struct tag **tag)
+{
+ if (!e || e->prio < prio)
+ return 1;
+
+ if (e->prio == 2 && prio == 2) {
+ /* Multiple annotated tags point to the same commit.
+ * Select one to keep based upon their tagger date.
+ */
+ struct tag *t;
+
+ if (!e->tag) {
+ t = lookup_tag(e->sha1);
+ if (!t || parse_tag(t))
+ return 1;
+ e->tag = t;
+ }
+
+ t = lookup_tag(sha1);
+ if (!t || parse_tag(t))
+ return 0;
+ *tag = t;
+
+ if (e->tag->date < t->date)
+ return 1;
+ }
+
+ return 0;
+}
+
+static void add_to_known_names(const char *path,
+ const unsigned char *peeled,
+ int prio,
+ const unsigned char *sha1)
+{
+ struct commit_name *e = find_commit_name(peeled);
+ struct tag *tag = NULL;
+ if (replace_name(e, prio, sha1, &tag)) {
+ if (!e) {
+ e = xmalloc(sizeof(struct commit_name));
+ hashcpy(e->peeled, peeled);
+ hashmap_entry_init(e, sha1hash(peeled));
+ hashmap_add(&names, e);
+ e->path = NULL;
+ }
+ e->tag = tag;
+ e->prio = prio;
+ e->name_checked = 0;
+ hashcpy(e->sha1, sha1);
+ free(e->path);
+ e->path = xstrdup(path);
+ }
+}
+
+static int get_name(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+{
+ int is_tag = starts_with(path, "refs/tags/");
+ unsigned char peeled[20];
+ int is_annotated, prio;
+
+ /* Reject anything outside refs/tags/ unless --all */
+ if (!all && !is_tag)
+ return 0;
+
+ /* Accept only tags that match the pattern, if given */
+ if (pattern && (!is_tag || wildmatch(pattern, path + 10, 0, NULL)))
+ return 0;
+
+ /* Is it annotated? */
+ if (!peel_ref(path, peeled)) {
+ is_annotated = !!hashcmp(sha1, peeled);
+ } else {
+ hashcpy(peeled, sha1);
+ is_annotated = 0;
+ }
+
+ /*
+ * By default, we only use annotated tags, but with --tags
+ * we fall back to lightweight ones (even without --tags,
+ * we still remember lightweight ones, only to give hints
+ * in an error message). --all allows any refs to be used.
+ */
+ if (is_annotated)
+ prio = 2;
+ else if (is_tag)
+ prio = 1;
+ else
+ prio = 0;
+
+ add_to_known_names(all ? path + 5 : path + 10, peeled, prio, sha1);
+ return 0;
+}
+
+struct possible_tag {
+ struct commit_name *name;
+ int depth;
+ int found_order;
+ unsigned flag_within;
+};
+
+static int compare_pt(const void *a_, const void *b_)
+{
+ struct possible_tag *a = (struct possible_tag *)a_;
+ struct possible_tag *b = (struct possible_tag *)b_;
+ if (a->depth != b->depth)
+ return a->depth - b->depth;
+ if (a->found_order != b->found_order)
+ return a->found_order - b->found_order;
+ return 0;
+}
+
+static unsigned long finish_depth_computation(
+ struct commit_list **list,
+ struct possible_tag *best)
+{
+ unsigned long seen_commits = 0;
+ while (*list) {
+ struct commit *c = pop_commit(list);
+ struct commit_list *parents = c->parents;
+ seen_commits++;
+ if (c->object.flags & best->flag_within) {
+ struct commit_list *a = *list;
+ while (a) {
+ struct commit *i = a->item;
+ if (!(i->object.flags & best->flag_within))
+ break;
+ a = a->next;
+ }
+ if (!a)
+ break;
+ } else
+ best->depth++;
+ while (parents) {
+ struct commit *p = parents->item;
+ parse_commit(p);
+ if (!(p->object.flags & SEEN))
+ commit_list_insert_by_date(p, list);
+ p->object.flags |= c->object.flags;
+ parents = parents->next;
+ }
+ }
+ return seen_commits;
+}
+
+static void display_name(struct commit_name *n)
+{
+ if (n->prio == 2 && !n->tag) {
+ n->tag = lookup_tag(n->sha1);
+ if (!n->tag || parse_tag(n->tag))
+ die(_("annotated tag %s not available"), n->path);
+ }
+ if (n->tag && !n->name_checked) {
+ if (!n->tag->tag)
+ die(_("annotated tag %s has no embedded name"), n->path);
+ if (strcmp(n->tag->tag, all ? n->path + 5 : n->path))
+ warning(_("tag '%s' is really '%s' here"), n->tag->tag, n->path);
+ n->name_checked = 1;
+ }
+
+ if (n->tag)
+ printf("%s", n->tag->tag);
+ else
+ printf("%s", n->path);
+}
+
+static void show_suffix(int depth, const unsigned char *sha1)
+{
+ printf("-%d-g%s", depth, find_unique_abbrev(sha1, abbrev));
+}
+
+static void describe(const char *arg, int last_one)
+{
+ unsigned char sha1[20];
+ struct commit *cmit, *gave_up_on = NULL;
+ struct commit_list *list;
+ struct commit_name *n;
+ struct possible_tag all_matches[MAX_TAGS];
+ unsigned int match_cnt = 0, annotated_cnt = 0, cur_match;
+ unsigned long seen_commits = 0;
+ unsigned int unannotated_cnt = 0;
+
+ if (get_sha1(arg, sha1))
+ die(_("Not a valid object name %s"), arg);
+ cmit = lookup_commit_reference(sha1);
+ if (!cmit)
+ die(_("%s is not a valid '%s' object"), arg, commit_type);
+
+ n = find_commit_name(cmit->object.sha1);
+ if (n && (tags || all || n->prio == 2)) {
+ /*
+ * Exact match to an existing ref.
+ */
+ display_name(n);
+ if (longformat)
+ show_suffix(0, n->tag ? n->tag->tagged->sha1 : sha1);
+ if (dirty)
+ printf("%s", dirty);
+ printf("\n");
+ return;
+ }
+
+ if (!max_candidates)
+ die(_("no tag exactly matches '%s'"), sha1_to_hex(cmit->object.sha1));
+ if (debug)
+ fprintf(stderr, _("searching to describe %s\n"), arg);
+
+ if (!have_util) {
+ struct hashmap_iter iter;
+ struct commit *c;
+ struct commit_name *n = hashmap_iter_first(&names, &iter);
+ for (; n; n = hashmap_iter_next(&iter)) {
+ c = lookup_commit_reference_gently(n->peeled, 1);
+ if (c)
+ c->util = n;
+ }
+ have_util = 1;
+ }
+
+ list = NULL;
+ cmit->object.flags = SEEN;
+ commit_list_insert(cmit, &list);
+ while (list) {
+ struct commit *c = pop_commit(&list);
+ struct commit_list *parents = c->parents;
+ seen_commits++;
+ n = c->util;
+ if (n) {
+ if (!tags && !all && n->prio < 2) {
+ unannotated_cnt++;
+ } else if (match_cnt < max_candidates) {
+ struct possible_tag *t = &all_matches[match_cnt++];
+ t->name = n;
+ t->depth = seen_commits - 1;
+ t->flag_within = 1u << match_cnt;
+ t->found_order = match_cnt;
+ c->object.flags |= t->flag_within;
+ if (n->prio == 2)
+ annotated_cnt++;
+ }
+ else {
+ gave_up_on = c;
+ break;
+ }
+ }
+ for (cur_match = 0; cur_match < match_cnt; cur_match++) {
+ struct possible_tag *t = &all_matches[cur_match];
+ if (!(c->object.flags & t->flag_within))
+ t->depth++;
+ }
+ if (annotated_cnt && !list) {
+ if (debug)
+ fprintf(stderr, _("finished search at %s\n"),
+ sha1_to_hex(c->object.sha1));
+ break;
+ }
+ while (parents) {
+ struct commit *p = parents->item;
+ parse_commit(p);
+ if (!(p->object.flags & SEEN))
+ commit_list_insert_by_date(p, &list);
+ p->object.flags |= c->object.flags;
+ parents = parents->next;
+
+ if (first_parent)
+ break;
+ }
+ }
+
+ if (!match_cnt) {
+ const unsigned char *sha1 = cmit->object.sha1;
+ if (always) {
+ printf("%s", find_unique_abbrev(sha1, abbrev));
+ if (dirty)
+ printf("%s", dirty);
+ printf("\n");
+ return;
+ }
+ if (unannotated_cnt)
+ die(_("No annotated tags can describe '%s'.\n"
+ "However, there were unannotated tags: try --tags."),
+ sha1_to_hex(sha1));
+ else
+ die(_("No tags can describe '%s'.\n"
+ "Try --always, or create some tags."),
+ sha1_to_hex(sha1));
+ }
+
+ qsort(all_matches, match_cnt, sizeof(all_matches[0]), compare_pt);
+
+ if (gave_up_on) {
+ commit_list_insert_by_date(gave_up_on, &list);
+ seen_commits--;
+ }
+ seen_commits += finish_depth_computation(&list, &all_matches[0]);
+ free_commit_list(list);
+
+ if (debug) {
+ for (cur_match = 0; cur_match < match_cnt; cur_match++) {
+ struct possible_tag *t = &all_matches[cur_match];
+ fprintf(stderr, " %-11s %8d %s\n",
+ prio_names[t->name->prio],
+ t->depth, t->name->path);
+ }
+ fprintf(stderr, _("traversed %lu commits\n"), seen_commits);
+ if (gave_up_on) {
+ fprintf(stderr,
+ _("more than %i tags found; listed %i most recent\n"
+ "gave up search at %s\n"),
+ max_candidates, max_candidates,
+ sha1_to_hex(gave_up_on->object.sha1));
+ }
+ }
+
+ display_name(all_matches[0].name);
+ if (abbrev)
+ show_suffix(all_matches[0].depth, cmit->object.sha1);
+ if (dirty)
+ printf("%s", dirty);
+ printf("\n");
+
+ if (!last_one)
+ clear_commit_marks(cmit, -1);
+}
+
+int cmd_describe(int argc, const char **argv, const char *prefix)
+{
+ int contains = 0;
+ struct option options[] = {
+ OPT_BOOL(0, "contains", &contains, N_("find the tag that comes after the commit")),
+ OPT_BOOL(0, "debug", &debug, N_("debug search strategy on stderr")),
+ OPT_BOOL(0, "all", &all, N_("use any ref")),
+ OPT_BOOL(0, "tags", &tags, N_("use any tag, even unannotated")),
+ OPT_BOOL(0, "long", &longformat, N_("always use long format")),
+ OPT_BOOL(0, "first-parent", &first_parent, N_("only follow first parent")),
+ OPT__ABBREV(&abbrev),
+ OPT_SET_INT(0, "exact-match", &max_candidates,
+ N_("only output exact matches"), 0),
+ OPT_INTEGER(0, "candidates", &max_candidates,
+ N_("consider <n> most recent tags (default: 10)")),
+ OPT_STRING(0, "match", &pattern, N_("pattern"),
+ N_("only consider tags matching <pattern>")),
+ OPT_BOOL(0, "always", &always,
+ N_("show abbreviated commit object as fallback")),
+ {OPTION_STRING, 0, "dirty", &dirty, N_("mark"),
+ N_("append <mark> on dirty working tree (default: \"-dirty\")"),
+ PARSE_OPT_OPTARG, NULL, (intptr_t) "-dirty"},
+ OPT_END(),
+ };
+
+ git_config(git_default_config, NULL);
+ argc = parse_options(argc, argv, prefix, options, describe_usage, 0);
+ if (abbrev < 0)
+ abbrev = DEFAULT_ABBREV;
+
+ if (max_candidates < 0)
+ max_candidates = 0;
+ else if (max_candidates > MAX_TAGS)
+ max_candidates = MAX_TAGS;
+
+ save_commit_buffer = 0;
+
+ if (longformat && abbrev == 0)
+ die(_("--long is incompatible with --abbrev=0"));
+
+ if (contains) {
+ struct argv_array args;
+
+ argv_array_init(&args);
+ argv_array_pushl(&args, "name-rev",
+ "--peel-tag", "--name-only", "--no-undefined",
+ NULL);
+ if (always)
+ argv_array_push(&args, "--always");
+ if (!all) {
+ argv_array_push(&args, "--tags");
+ if (pattern)
+ argv_array_pushf(&args, "--refs=refs/tags/%s", pattern);
+ }
+ while (*argv) {
+ argv_array_push(&args, *argv);
+ argv++;
+ }
+ return cmd_name_rev(args.argc, args.argv, prefix);
+ }
+
+ hashmap_init(&names, (hashmap_cmp_fn) commit_name_cmp, 0);
+ for_each_rawref(get_name, NULL);
+ if (!names.size && !always)
+ die(_("No names found, cannot describe anything."));
+
+ if (argc == 0) {
+ if (dirty) {
+ static struct lock_file index_lock;
+ int fd;
+
+ read_cache_preload(NULL);
+ refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED,
+ NULL, NULL, NULL);
+ fd = hold_locked_index(&index_lock, 0);
+ if (0 <= fd)
+ update_index_if_able(&the_index, &index_lock);
+
+ if (!cmd_diff_index(ARRAY_SIZE(diff_index_args) - 1,
+ diff_index_args, prefix))
+ dirty = NULL;
+ }
+ describe("HEAD", 1);
+ } else if (dirty) {
+ die(_("--dirty is incompatible with commit-ishes"));
+ } else {
+ while (argc-- > 0)
+ describe(*argv++, argc == 0);
+ }
+ return 0;
+}
diff --git a/builtin/diff-files.c b/builtin/diff-files.c
new file mode 100644
index 0000000..8ed2eb8
--- /dev/null
+++ b/builtin/diff-files.c
@@ -0,0 +1,70 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "diff.h"
+#include "commit.h"
+#include "revision.h"
+#include "builtin.h"
+#include "submodule.h"
+
+static const char diff_files_usage[] =
+"git diff-files [-q] [-0 | -1 | -2 | -3 | -c | --cc] [<common-diff-options>] [<path>...]"
+COMMON_DIFF_OPTIONS_HELP;
+
+int cmd_diff_files(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info rev;
+ int result;
+ unsigned options = 0;
+
+ init_revisions(&rev, prefix);
+ gitmodules_config();
+ git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
+ rev.abbrev = 0;
+
+ argc = setup_revisions(argc, argv, &rev, NULL);
+ while (1 < argc && argv[1][0] == '-') {
+ if (!strcmp(argv[1], "--base"))
+ rev.max_count = 1;
+ else if (!strcmp(argv[1], "--ours"))
+ rev.max_count = 2;
+ else if (!strcmp(argv[1], "--theirs"))
+ rev.max_count = 3;
+ else if (!strcmp(argv[1], "-q"))
+ options |= DIFF_SILENT_ON_REMOVED;
+ else
+ usage(diff_files_usage);
+ argv++; argc--;
+ }
+ if (!rev.diffopt.output_format)
+ rev.diffopt.output_format = DIFF_FORMAT_RAW;
+
+ /*
+ * Make sure there are NO revision (i.e. pending object) parameter,
+ * rev.max_count is reasonable (0 <= n <= 3), and
+ * there is no other revision filtering parameters.
+ */
+ if (rev.pending.nr ||
+ rev.min_age != -1 || rev.max_age != -1 ||
+ 3 < rev.max_count)
+ usage(diff_files_usage);
+
+ /*
+ * "diff-files --base -p" should not combine merges because it
+ * was not asked to. "diff-files -c -p" should not densify
+ * (the user should ask with "diff-files --cc" explicitly).
+ */
+ if (rev.max_count == -1 && !rev.combine_merges &&
+ (rev.diffopt.output_format & DIFF_FORMAT_PATCH))
+ rev.combine_merges = rev.dense_combined_merges = 1;
+
+ if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
+ perror("read_cache_preload");
+ return -1;
+ }
+ result = run_diff_files(&rev, options);
+ return diff_result_code(&rev.diffopt, result);
+}
diff --git a/builtin/diff-index.c b/builtin/diff-index.c
new file mode 100644
index 0000000..d979824
--- /dev/null
+++ b/builtin/diff-index.c
@@ -0,0 +1,56 @@
+#include "cache.h"
+#include "diff.h"
+#include "commit.h"
+#include "revision.h"
+#include "builtin.h"
+#include "submodule.h"
+
+static const char diff_cache_usage[] =
+"git diff-index [-m] [--cached] "
+"[<common-diff-options>] <tree-ish> [<path>...]"
+COMMON_DIFF_OPTIONS_HELP;
+
+int cmd_diff_index(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info rev;
+ int cached = 0;
+ int i;
+ int result;
+
+ init_revisions(&rev, prefix);
+ gitmodules_config();
+ git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
+ rev.abbrev = 0;
+
+ argc = setup_revisions(argc, argv, &rev, NULL);
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+
+ if (!strcmp(arg, "--cached"))
+ cached = 1;
+ else
+ usage(diff_cache_usage);
+ }
+ if (!rev.diffopt.output_format)
+ rev.diffopt.output_format = DIFF_FORMAT_RAW;
+
+ /*
+ * Make sure there is one revision (i.e. pending object),
+ * and there is no revision filtering parameters.
+ */
+ if (rev.pending.nr != 1 ||
+ rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
+ usage(diff_cache_usage);
+ if (!cached) {
+ setup_work_tree();
+ if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
+ perror("read_cache_preload");
+ return -1;
+ }
+ } else if (read_cache() < 0) {
+ perror("read_cache");
+ return -1;
+ }
+ result = run_diff_index(&rev, cached);
+ return diff_result_code(&rev.diffopt, result);
+}
diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
new file mode 100644
index 0000000..12b683d
--- /dev/null
+++ b/builtin/diff-tree.c
@@ -0,0 +1,186 @@
+#include "cache.h"
+#include "diff.h"
+#include "commit.h"
+#include "log-tree.h"
+#include "builtin.h"
+#include "submodule.h"
+
+static struct rev_info log_tree_opt;
+
+static int diff_tree_commit_sha1(const unsigned char *sha1)
+{
+ struct commit *commit = lookup_commit_reference(sha1);
+ if (!commit)
+ return -1;
+ return log_tree_commit(&log_tree_opt, commit);
+}
+
+/* Diff one or more commits. */
+static int stdin_diff_commit(struct commit *commit, char *line, int len)
+{
+ unsigned char sha1[20];
+ if (isspace(line[40]) && !get_sha1_hex(line+41, sha1)) {
+ /* Graft the fake parents locally to the commit */
+ int pos = 41;
+ struct commit_list **pptr;
+
+ /* Free the real parent list */
+ free_commit_list(commit->parents);
+ commit->parents = NULL;
+ pptr = &(commit->parents);
+ while (line[pos] && !get_sha1_hex(line + pos, sha1)) {
+ struct commit *parent = lookup_commit(sha1);
+ if (parent) {
+ pptr = &commit_list_insert(parent, pptr)->next;
+ }
+ pos += 41;
+ }
+ }
+ return log_tree_commit(&log_tree_opt, commit);
+}
+
+/* Diff two trees. */
+static int stdin_diff_trees(struct tree *tree1, char *line, int len)
+{
+ unsigned char sha1[20];
+ struct tree *tree2;
+ if (len != 82 || !isspace(line[40]) || get_sha1_hex(line + 41, sha1))
+ return error("Need exactly two trees, separated by a space");
+ tree2 = lookup_tree(sha1);
+ if (!tree2 || parse_tree(tree2))
+ return -1;
+ printf("%s %s\n", sha1_to_hex(tree1->object.sha1),
+ sha1_to_hex(tree2->object.sha1));
+ diff_tree_sha1(tree1->object.sha1, tree2->object.sha1,
+ "", &log_tree_opt.diffopt);
+ log_tree_diff_flush(&log_tree_opt);
+ return 0;
+}
+
+static int diff_tree_stdin(char *line)
+{
+ int len = strlen(line);
+ unsigned char sha1[20];
+ struct object *obj;
+
+ if (!len || line[len-1] != '\n')
+ return -1;
+ line[len-1] = 0;
+ if (get_sha1_hex(line, sha1))
+ return -1;
+ obj = parse_object(sha1);
+ if (!obj)
+ return -1;
+ if (obj->type == OBJ_COMMIT)
+ return stdin_diff_commit((struct commit *)obj, line, len);
+ if (obj->type == OBJ_TREE)
+ return stdin_diff_trees((struct tree *)obj, line, len);
+ error("Object %s is a %s, not a commit or tree",
+ sha1_to_hex(sha1), typename(obj->type));
+ return -1;
+}
+
+static const char diff_tree_usage[] =
+"git diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
+"[<common-diff-options>] <tree-ish> [<tree-ish>] [<path>...]\n"
+" -r diff recursively\n"
+" --root include the initial commit as diff against /dev/null\n"
+COMMON_DIFF_OPTIONS_HELP;
+
+static void diff_tree_tweak_rev(struct rev_info *rev, struct setup_revision_opt *opt)
+{
+ if (!rev->diffopt.output_format) {
+ if (rev->dense_combined_merges)
+ rev->diffopt.output_format = DIFF_FORMAT_PATCH;
+ else
+ rev->diffopt.output_format = DIFF_FORMAT_RAW;
+ }
+}
+
+int cmd_diff_tree(int argc, const char **argv, const char *prefix)
+{
+ int nr_sha1;
+ char line[1000];
+ struct object *tree1, *tree2;
+ static struct rev_info *opt = &log_tree_opt;
+ struct setup_revision_opt s_r_opt;
+ int read_stdin = 0;
+
+ init_revisions(opt, prefix);
+ gitmodules_config();
+ git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
+ opt->abbrev = 0;
+ opt->diff = 1;
+ opt->disable_stdin = 1;
+ memset(&s_r_opt, 0, sizeof(s_r_opt));
+ s_r_opt.tweak = diff_tree_tweak_rev;
+ argc = setup_revisions(argc, argv, opt, &s_r_opt);
+
+ while (--argc > 0) {
+ const char *arg = *++argv;
+
+ if (!strcmp(arg, "--stdin")) {
+ read_stdin = 1;
+ continue;
+ }
+ usage(diff_tree_usage);
+ }
+
+ /*
+ * NOTE! We expect "a ^b" to be equal to "a..b", so we
+ * reverse the order of the objects if the second one
+ * is marked UNINTERESTING.
+ */
+ nr_sha1 = opt->pending.nr;
+ switch (nr_sha1) {
+ case 0:
+ if (!read_stdin)
+ usage(diff_tree_usage);
+ break;
+ case 1:
+ tree1 = opt->pending.objects[0].item;
+ diff_tree_commit_sha1(tree1->sha1);
+ break;
+ case 2:
+ tree1 = opt->pending.objects[0].item;
+ tree2 = opt->pending.objects[1].item;
+ if (tree2->flags & UNINTERESTING) {
+ struct object *tmp = tree2;
+ tree2 = tree1;
+ tree1 = tmp;
+ }
+ diff_tree_sha1(tree1->sha1,
+ tree2->sha1,
+ "", &opt->diffopt);
+ log_tree_diff_flush(opt);
+ break;
+ }
+
+ if (read_stdin) {
+ int saved_nrl = 0;
+ int saved_dcctc = 0;
+
+ if (opt->diffopt.detect_rename)
+ opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
+ DIFF_SETUP_USE_CACHE);
+ while (fgets(line, sizeof(line), stdin)) {
+ unsigned char sha1[20];
+
+ if (get_sha1_hex(line, sha1)) {
+ fputs(line, stdout);
+ fflush(stdout);
+ }
+ else {
+ diff_tree_stdin(line);
+ if (saved_nrl < opt->diffopt.needed_rename_limit)
+ saved_nrl = opt->diffopt.needed_rename_limit;
+ if (opt->diffopt.degraded_cc_to_c)
+ saved_dcctc = 1;
+ }
+ }
+ opt->diffopt.degraded_cc_to_c = saved_dcctc;
+ opt->diffopt.needed_rename_limit = saved_nrl;
+ }
+
+ return diff_result_code(&opt->diffopt, 0);
+}
diff --git a/builtin/diff.c b/builtin/diff.c
new file mode 100644
index 0000000..4326fa5
--- /dev/null
+++ b/builtin/diff.c
@@ -0,0 +1,471 @@
+/*
+ * Builtin "git diff"
+ *
+ * Copyright (c) 2006 Junio C Hamano
+ */
+#include "cache.h"
+#include "lockfile.h"
+#include "color.h"
+#include "commit.h"
+#include "blob.h"
+#include "tag.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "revision.h"
+#include "log-tree.h"
+#include "builtin.h"
+#include "submodule.h"
+#include "sha1-array.h"
+
+#define DIFF_NO_INDEX_EXPLICIT 1
+#define DIFF_NO_INDEX_IMPLICIT 2
+
+struct blobinfo {
+ unsigned char sha1[20];
+ const char *name;
+ unsigned mode;
+};
+
+static const char builtin_diff_usage[] =
+"git diff [<options>] [<commit> [<commit>]] [--] [<path>...]";
+
+static void stuff_change(struct diff_options *opt,
+ unsigned old_mode, unsigned new_mode,
+ const unsigned char *old_sha1,
+ const unsigned char *new_sha1,
+ int old_sha1_valid,
+ int new_sha1_valid,
+ const char *old_name,
+ const char *new_name)
+{
+ struct diff_filespec *one, *two;
+
+ if (!is_null_sha1(old_sha1) && !is_null_sha1(new_sha1) &&
+ !hashcmp(old_sha1, new_sha1) && (old_mode == new_mode))
+ return;
+
+ if (DIFF_OPT_TST(opt, REVERSE_DIFF)) {
+ unsigned tmp;
+ const unsigned char *tmp_u;
+ const char *tmp_c;
+ tmp = old_mode; old_mode = new_mode; new_mode = tmp;
+ tmp_u = old_sha1; old_sha1 = new_sha1; new_sha1 = tmp_u;
+ tmp_c = old_name; old_name = new_name; new_name = tmp_c;
+ }
+
+ if (opt->prefix &&
+ (strncmp(old_name, opt->prefix, opt->prefix_length) ||
+ strncmp(new_name, opt->prefix, opt->prefix_length)))
+ return;
+
+ one = alloc_filespec(old_name);
+ two = alloc_filespec(new_name);
+ fill_filespec(one, old_sha1, old_sha1_valid, old_mode);
+ fill_filespec(two, new_sha1, new_sha1_valid, new_mode);
+
+ diff_queue(&diff_queued_diff, one, two);
+}
+
+static int builtin_diff_b_f(struct rev_info *revs,
+ int argc, const char **argv,
+ struct blobinfo *blob)
+{
+ /* Blob vs file in the working tree*/
+ struct stat st;
+ const char *path;
+
+ if (argc > 1)
+ usage(builtin_diff_usage);
+
+ GUARD_PATHSPEC(&revs->prune_data, PATHSPEC_FROMTOP | PATHSPEC_LITERAL);
+ path = revs->prune_data.items[0].match;
+
+ if (lstat(path, &st))
+ die_errno(_("failed to stat '%s'"), path);
+ if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)))
+ die(_("'%s': not a regular file or symlink"), path);
+
+ diff_set_mnemonic_prefix(&revs->diffopt, "o/", "w/");
+
+ if (blob[0].mode == S_IFINVALID)
+ blob[0].mode = canon_mode(st.st_mode);
+
+ stuff_change(&revs->diffopt,
+ blob[0].mode, canon_mode(st.st_mode),
+ blob[0].sha1, null_sha1,
+ 1, 0,
+ path, path);
+ diffcore_std(&revs->diffopt);
+ diff_flush(&revs->diffopt);
+ return 0;
+}
+
+static int builtin_diff_blobs(struct rev_info *revs,
+ int argc, const char **argv,
+ struct blobinfo *blob)
+{
+ unsigned mode = canon_mode(S_IFREG | 0644);
+
+ if (argc > 1)
+ usage(builtin_diff_usage);
+
+ if (blob[0].mode == S_IFINVALID)
+ blob[0].mode = mode;
+
+ if (blob[1].mode == S_IFINVALID)
+ blob[1].mode = mode;
+
+ stuff_change(&revs->diffopt,
+ blob[0].mode, blob[1].mode,
+ blob[0].sha1, blob[1].sha1,
+ 1, 1,
+ blob[0].name, blob[1].name);
+ diffcore_std(&revs->diffopt);
+ diff_flush(&revs->diffopt);
+ return 0;
+}
+
+static int builtin_diff_index(struct rev_info *revs,
+ int argc, const char **argv)
+{
+ int cached = 0;
+ while (1 < argc) {
+ const char *arg = argv[1];
+ if (!strcmp(arg, "--cached") || !strcmp(arg, "--staged"))
+ cached = 1;
+ else
+ usage(builtin_diff_usage);
+ argv++; argc--;
+ }
+ /*
+ * Make sure there is one revision (i.e. pending object),
+ * and there is no revision filtering parameters.
+ */
+ if (revs->pending.nr != 1 ||
+ revs->max_count != -1 || revs->min_age != -1 ||
+ revs->max_age != -1)
+ usage(builtin_diff_usage);
+ if (!cached) {
+ setup_work_tree();
+ if (read_cache_preload(&revs->diffopt.pathspec) < 0) {
+ perror("read_cache_preload");
+ return -1;
+ }
+ } else if (read_cache() < 0) {
+ perror("read_cache");
+ return -1;
+ }
+ return run_diff_index(revs, cached);
+}
+
+static int builtin_diff_tree(struct rev_info *revs,
+ int argc, const char **argv,
+ struct object_array_entry *ent0,
+ struct object_array_entry *ent1)
+{
+ const unsigned char *(sha1[2]);
+ int swap = 0;
+
+ if (argc > 1)
+ usage(builtin_diff_usage);
+
+ /*
+ * We saw two trees, ent0 and ent1. If ent1 is uninteresting,
+ * swap them.
+ */
+ if (ent1->item->flags & UNINTERESTING)
+ swap = 1;
+ sha1[swap] = ent0->item->sha1;
+ sha1[1 - swap] = ent1->item->sha1;
+ diff_tree_sha1(sha1[0], sha1[1], "", &revs->diffopt);
+ log_tree_diff_flush(revs);
+ return 0;
+}
+
+static int builtin_diff_combined(struct rev_info *revs,
+ int argc, const char **argv,
+ struct object_array_entry *ent,
+ int ents)
+{
+ struct sha1_array parents = SHA1_ARRAY_INIT;
+ int i;
+
+ if (argc > 1)
+ usage(builtin_diff_usage);
+
+ if (!revs->dense_combined_merges && !revs->combine_merges)
+ revs->dense_combined_merges = revs->combine_merges = 1;
+ for (i = 1; i < ents; i++)
+ sha1_array_append(&parents, ent[i].item->sha1);
+ diff_tree_combined(ent[0].item->sha1, &parents,
+ revs->dense_combined_merges, revs);
+ sha1_array_clear(&parents);
+ return 0;
+}
+
+static void refresh_index_quietly(void)
+{
+ struct lock_file *lock_file;
+ int fd;
+
+ lock_file = xcalloc(1, sizeof(struct lock_file));
+ fd = hold_locked_index(lock_file, 0);
+ if (fd < 0)
+ return;
+ discard_cache();
+ read_cache();
+ refresh_cache(REFRESH_QUIET|REFRESH_UNMERGED);
+ update_index_if_able(&the_index, lock_file);
+}
+
+static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv)
+{
+ unsigned int options = 0;
+
+ while (1 < argc && argv[1][0] == '-') {
+ if (!strcmp(argv[1], "--base"))
+ revs->max_count = 1;
+ else if (!strcmp(argv[1], "--ours"))
+ revs->max_count = 2;
+ else if (!strcmp(argv[1], "--theirs"))
+ revs->max_count = 3;
+ else if (!strcmp(argv[1], "-q"))
+ options |= DIFF_SILENT_ON_REMOVED;
+ else if (!strcmp(argv[1], "-h"))
+ usage(builtin_diff_usage);
+ else
+ return error(_("invalid option: %s"), argv[1]);
+ argv++; argc--;
+ }
+
+ /*
+ * "diff --base" should not combine merges because it was not
+ * asked to. "diff -c" should not densify (if the user wants
+ * dense one, --cc can be explicitly asked for, or just rely
+ * on the default).
+ */
+ if (revs->max_count == -1 && !revs->combine_merges &&
+ (revs->diffopt.output_format & DIFF_FORMAT_PATCH))
+ revs->combine_merges = revs->dense_combined_merges = 1;
+
+ setup_work_tree();
+ if (read_cache_preload(&revs->diffopt.pathspec) < 0) {
+ perror("read_cache_preload");
+ return -1;
+ }
+ return run_diff_files(revs, options);
+}
+
+int cmd_diff(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ struct rev_info rev;
+ struct object_array ent = OBJECT_ARRAY_INIT;
+ int blobs = 0, paths = 0;
+ struct blobinfo blob[2];
+ int nongit = 0, no_index = 0;
+ int result = 0;
+
+ /*
+ * We could get N tree-ish in the rev.pending_objects list.
+ * Also there could be M blobs there, and P pathspecs.
+ *
+ * N=0, M=0:
+ * cache vs files (diff-files)
+ * N=0, M=2:
+ * compare two random blobs. P must be zero.
+ * N=0, M=1, P=1:
+ * compare a blob with a working tree file.
+ *
+ * N=1, M=0:
+ * tree vs cache (diff-index --cached)
+ *
+ * N=2, M=0:
+ * tree vs tree (diff-tree)
+ *
+ * N=0, M=0, P=2:
+ * compare two filesystem entities (aka --no-index).
+ *
+ * Other cases are errors.
+ */
+
+ /* Were we asked to do --no-index explicitly? */
+ for (i = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "--")) {
+ i++;
+ break;
+ }
+ if (!strcmp(argv[i], "--no-index"))
+ no_index = DIFF_NO_INDEX_EXPLICIT;
+ if (argv[i][0] != '-')
+ break;
+ }
+
+ if (!no_index)
+ prefix = setup_git_directory_gently(&nongit);
+
+ /*
+ * Treat git diff with at least one path outside of the
+ * repo the same as if the command would have been executed
+ * outside of a git repository. In this case it behaves
+ * the same way as "git diff --no-index <a> <b>", which acts
+ * as a colourful "diff" replacement.
+ */
+ if (nongit || ((argc == i + 2) &&
+ (!path_inside_repo(prefix, argv[i]) ||
+ !path_inside_repo(prefix, argv[i + 1]))))
+ no_index = DIFF_NO_INDEX_IMPLICIT;
+
+ if (!no_index)
+ gitmodules_config();
+ git_config(git_diff_ui_config, NULL);
+
+ init_revisions(&rev, prefix);
+
+ if (no_index && argc != i + 2) {
+ if (no_index == DIFF_NO_INDEX_IMPLICIT) {
+ /*
+ * There was no --no-index and there were not two
+ * paths. It is possible that the user intended
+ * to do an inside-repository operation.
+ */
+ fprintf(stderr, "Not a git repository\n");
+ fprintf(stderr,
+ "To compare two paths outside a working tree:\n");
+ }
+ /* Give the usage message for non-repository usage and exit. */
+ usagef("git diff %s <path> <path>",
+ no_index == DIFF_NO_INDEX_EXPLICIT ?
+ "--no-index" : "[--no-index]");
+
+ }
+ if (no_index)
+ /* If this is a no-index diff, just run it and exit there. */
+ diff_no_index(&rev, argc, argv, prefix);
+
+ /* Otherwise, we are doing the usual "git" diff */
+ rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
+
+ /* Scale to real terminal size and respect statGraphWidth config */
+ rev.diffopt.stat_width = -1;
+ rev.diffopt.stat_graph_width = -1;
+
+ /* Default to let external and textconv be used */
+ DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
+ DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
+
+ if (nongit)
+ die(_("Not a git repository"));
+ argc = setup_revisions(argc, argv, &rev, NULL);
+ if (!rev.diffopt.output_format) {
+ rev.diffopt.output_format = DIFF_FORMAT_PATCH;
+ diff_setup_done(&rev.diffopt);
+ }
+
+ DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
+
+ setup_diff_pager(&rev.diffopt);
+
+ /*
+ * Do we have --cached and not have a pending object, then
+ * default to HEAD by hand. Eek.
+ */
+ if (!rev.pending.nr) {
+ int i;
+ for (i = 1; i < argc; i++) {
+ const char *arg = argv[i];
+ if (!strcmp(arg, "--"))
+ break;
+ else if (!strcmp(arg, "--cached") ||
+ !strcmp(arg, "--staged")) {
+ add_head_to_pending(&rev);
+ if (!rev.pending.nr) {
+ struct tree *tree;
+ tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
+ add_pending_object(&rev, &tree->object, "HEAD");
+ }
+ break;
+ }
+ }
+ }
+
+ for (i = 0; i < rev.pending.nr; i++) {
+ struct object_array_entry *entry = &rev.pending.objects[i];
+ struct object *obj = entry->item;
+ const char *name = entry->name;
+ int flags = (obj->flags & UNINTERESTING);
+ if (!obj->parsed)
+ obj = parse_object(obj->sha1);
+ obj = deref_tag(obj, NULL, 0);
+ if (!obj)
+ die(_("invalid object '%s' given."), name);
+ if (obj->type == OBJ_COMMIT)
+ obj = &((struct commit *)obj)->tree->object;
+
+ if (obj->type == OBJ_TREE) {
+ obj->flags |= flags;
+ add_object_array(obj, name, &ent);
+ } else if (obj->type == OBJ_BLOB) {
+ if (2 <= blobs)
+ die(_("more than two blobs given: '%s'"), name);
+ hashcpy(blob[blobs].sha1, obj->sha1);
+ blob[blobs].name = name;
+ blob[blobs].mode = entry->mode;
+ blobs++;
+
+ } else {
+ die(_("unhandled object '%s' given."), name);
+ }
+ }
+ if (rev.prune_data.nr)
+ paths += rev.prune_data.nr;
+
+ /*
+ * Now, do the arguments look reasonable?
+ */
+ if (!ent.nr) {
+ switch (blobs) {
+ case 0:
+ result = builtin_diff_files(&rev, argc, argv);
+ break;
+ case 1:
+ if (paths != 1)
+ usage(builtin_diff_usage);
+ result = builtin_diff_b_f(&rev, argc, argv, blob);
+ break;
+ case 2:
+ if (paths)
+ usage(builtin_diff_usage);
+ result = builtin_diff_blobs(&rev, argc, argv, blob);
+ break;
+ default:
+ usage(builtin_diff_usage);
+ }
+ }
+ else if (blobs)
+ usage(builtin_diff_usage);
+ else if (ent.nr == 1)
+ result = builtin_diff_index(&rev, argc, argv);
+ else if (ent.nr == 2)
+ result = builtin_diff_tree(&rev, argc, argv,
+ &ent.objects[0], &ent.objects[1]);
+ else if (ent.objects[0].item->flags & UNINTERESTING) {
+ /*
+ * diff A...B where there is at least one merge base
+ * between A and B. We have ent.objects[0] ==
+ * merge-base, ent.objects[ents-2] == A, and
+ * ent.objects[ents-1] == B. Show diff between the
+ * base and B. Note that we pick one merge base at
+ * random if there are more than one.
+ */
+ result = builtin_diff_tree(&rev, argc, argv,
+ &ent.objects[0],
+ &ent.objects[ent.nr-1]);
+ } else
+ result = builtin_diff_combined(&rev, argc, argv,
+ ent.objects, ent.nr);
+ result = diff_result_code(&rev.diffopt, result);
+ if (1 < rev.diffopt.skip_stat_unmatch)
+ refresh_index_quietly();
+ return result;
+}
diff --git a/builtin/fast-export.c b/builtin/fast-export.c
new file mode 100644
index 0000000..b8182c2
--- /dev/null
+++ b/builtin/fast-export.c
@@ -0,0 +1,1072 @@
+/*
+ * "git fast-export" builtin command
+ *
+ * Copyright (C) 2007 Johannes E. Schindelin
+ */
+#include "builtin.h"
+#include "cache.h"
+#include "commit.h"
+#include "object.h"
+#include "tag.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "log-tree.h"
+#include "revision.h"
+#include "decorate.h"
+#include "string-list.h"
+#include "utf8.h"
+#include "parse-options.h"
+#include "quote.h"
+#include "remote.h"
+#include "blob.h"
+
+static const char *fast_export_usage[] = {
+ N_("git fast-export [rev-list-opts]"),
+ NULL
+};
+
+static int progress;
+static enum { ABORT, VERBATIM, WARN, WARN_STRIP, STRIP } signed_tag_mode = ABORT;
+static enum { ERROR, DROP, REWRITE } tag_of_filtered_mode = ERROR;
+static int fake_missing_tagger;
+static int use_done_feature;
+static int no_data;
+static int full_tree;
+static struct string_list extra_refs = STRING_LIST_INIT_NODUP;
+static struct refspec *refspecs;
+static int refspecs_nr;
+static int anonymize;
+
+static int parse_opt_signed_tag_mode(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset || !strcmp(arg, "abort"))
+ signed_tag_mode = ABORT;
+ else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore"))
+ signed_tag_mode = VERBATIM;
+ else if (!strcmp(arg, "warn"))
+ signed_tag_mode = WARN;
+ else if (!strcmp(arg, "warn-strip"))
+ signed_tag_mode = WARN_STRIP;
+ else if (!strcmp(arg, "strip"))
+ signed_tag_mode = STRIP;
+ else
+ return error("Unknown signed-tags mode: %s", arg);
+ return 0;
+}
+
+static int parse_opt_tag_of_filtered_mode(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset || !strcmp(arg, "abort"))
+ tag_of_filtered_mode = ERROR;
+ else if (!strcmp(arg, "drop"))
+ tag_of_filtered_mode = DROP;
+ else if (!strcmp(arg, "rewrite"))
+ tag_of_filtered_mode = REWRITE;
+ else
+ return error("Unknown tag-of-filtered mode: %s", arg);
+ return 0;
+}
+
+static struct decoration idnums;
+static uint32_t last_idnum;
+
+static int has_unshown_parent(struct commit *commit)
+{
+ struct commit_list *parent;
+
+ for (parent = commit->parents; parent; parent = parent->next)
+ if (!(parent->item->object.flags & SHOWN) &&
+ !(parent->item->object.flags & UNINTERESTING))
+ return 1;
+ return 0;
+}
+
+struct anonymized_entry {
+ struct hashmap_entry hash;
+ const char *orig;
+ size_t orig_len;
+ const char *anon;
+ size_t anon_len;
+};
+
+static int anonymized_entry_cmp(const void *va, const void *vb,
+ const void *data)
+{
+ const struct anonymized_entry *a = va, *b = vb;
+ return a->orig_len != b->orig_len ||
+ memcmp(a->orig, b->orig, a->orig_len);
+}
+
+/*
+ * Basically keep a cache of X->Y so that we can repeatedly replace
+ * the same anonymized string with another. The actual generation
+ * is farmed out to the generate function.
+ */
+static const void *anonymize_mem(struct hashmap *map,
+ void *(*generate)(const void *, size_t *),
+ const void *orig, size_t *len)
+{
+ struct anonymized_entry key, *ret;
+
+ if (!map->cmpfn)
+ hashmap_init(map, anonymized_entry_cmp, 0);
+
+ hashmap_entry_init(&key, memhash(orig, *len));
+ key.orig = orig;
+ key.orig_len = *len;
+ ret = hashmap_get(map, &key, NULL);
+
+ if (!ret) {
+ ret = xmalloc(sizeof(*ret));
+ hashmap_entry_init(&ret->hash, key.hash.hash);
+ ret->orig = xstrdup(orig);
+ ret->orig_len = *len;
+ ret->anon = generate(orig, len);
+ ret->anon_len = *len;
+ hashmap_put(map, ret);
+ }
+
+ *len = ret->anon_len;
+ return ret->anon;
+}
+
+/*
+ * We anonymize each component of a path individually,
+ * so that paths a/b and a/c will share a common root.
+ * The paths are cached via anonymize_mem so that repeated
+ * lookups for "a" will yield the same value.
+ */
+static void anonymize_path(struct strbuf *out, const char *path,
+ struct hashmap *map,
+ void *(*generate)(const void *, size_t *))
+{
+ while (*path) {
+ const char *end_of_component = strchrnul(path, '/');
+ size_t len = end_of_component - path;
+ const char *c = anonymize_mem(map, generate, path, &len);
+ strbuf_add(out, c, len);
+ path = end_of_component;
+ if (*path)
+ strbuf_addch(out, *path++);
+ }
+}
+
+/* Since intptr_t is C99, we do not use it here */
+static inline uint32_t *mark_to_ptr(uint32_t mark)
+{
+ return ((uint32_t *)NULL) + mark;
+}
+
+static inline uint32_t ptr_to_mark(void * mark)
+{
+ return (uint32_t *)mark - (uint32_t *)NULL;
+}
+
+static inline void mark_object(struct object *object, uint32_t mark)
+{
+ add_decoration(&idnums, object, mark_to_ptr(mark));
+}
+
+static inline void mark_next_object(struct object *object)
+{
+ mark_object(object, ++last_idnum);
+}
+
+static int get_object_mark(struct object *object)
+{
+ void *decoration = lookup_decoration(&idnums, object);
+ if (!decoration)
+ return 0;
+ return ptr_to_mark(decoration);
+}
+
+static void show_progress(void)
+{
+ static int counter = 0;
+ if (!progress)
+ return;
+ if ((++counter % progress) == 0)
+ printf("progress %d objects\n", counter);
+}
+
+/*
+ * Ideally we would want some transformation of the blob data here
+ * that is unreversible, but would still be the same size and have
+ * the same data relationship to other blobs (so that we get the same
+ * delta and packing behavior as the original). But the first and last
+ * requirements there are probably mutually exclusive, so let's take
+ * the easy way out for now, and just generate arbitrary content.
+ *
+ * There's no need to cache this result with anonymize_mem, since
+ * we already handle blob content caching with marks.
+ */
+static char *anonymize_blob(unsigned long *size)
+{
+ static int counter;
+ struct strbuf out = STRBUF_INIT;
+ strbuf_addf(&out, "anonymous blob %d", counter++);
+ *size = out.len;
+ return strbuf_detach(&out, NULL);
+}
+
+static void export_blob(const unsigned char *sha1)
+{
+ unsigned long size;
+ enum object_type type;
+ char *buf;
+ struct object *object;
+ int eaten;
+
+ if (no_data)
+ return;
+
+ if (is_null_sha1(sha1))
+ return;
+
+ object = lookup_object(sha1);
+ if (object && object->flags & SHOWN)
+ return;
+
+ if (anonymize) {
+ buf = anonymize_blob(&size);
+ object = (struct object *)lookup_blob(sha1);
+ eaten = 0;
+ } else {
+ buf = read_sha1_file(sha1, &type, &size);
+ if (!buf)
+ die ("Could not read blob %s", sha1_to_hex(sha1));
+ if (check_sha1_signature(sha1, buf, size, typename(type)) < 0)
+ die("sha1 mismatch in blob %s", sha1_to_hex(sha1));
+ object = parse_object_buffer(sha1, type, size, buf, &eaten);
+ }
+
+ if (!object)
+ die("Could not read blob %s", sha1_to_hex(sha1));
+
+ mark_next_object(object);
+
+ printf("blob\nmark :%"PRIu32"\ndata %lu\n", last_idnum, size);
+ if (size && fwrite(buf, size, 1, stdout) != 1)
+ die_errno ("Could not write blob '%s'", sha1_to_hex(sha1));
+ printf("\n");
+
+ show_progress();
+
+ object->flags |= SHOWN;
+ if (!eaten)
+ free(buf);
+}
+
+static int depth_first(const void *a_, const void *b_)
+{
+ const struct diff_filepair *a = *((const struct diff_filepair **)a_);
+ const struct diff_filepair *b = *((const struct diff_filepair **)b_);
+ const char *name_a, *name_b;
+ int len_a, len_b, len;
+ int cmp;
+
+ name_a = a->one ? a->one->path : a->two->path;
+ name_b = b->one ? b->one->path : b->two->path;
+
+ len_a = strlen(name_a);
+ len_b = strlen(name_b);
+ len = (len_a < len_b) ? len_a : len_b;
+
+ /* strcmp will sort 'd' before 'd/e', we want 'd/e' before 'd' */
+ cmp = memcmp(name_a, name_b, len);
+ if (cmp)
+ return cmp;
+ cmp = len_b - len_a;
+ if (cmp)
+ return cmp;
+ /*
+ * Move 'R'ename entries last so that all references of the file
+ * appear in the output before it is renamed (e.g., when a file
+ * was copied and renamed in the same commit).
+ */
+ return (a->status == 'R') - (b->status == 'R');
+}
+
+static void print_path_1(const char *path)
+{
+ int need_quote = quote_c_style(path, NULL, NULL, 0);
+ if (need_quote)
+ quote_c_style(path, NULL, stdout, 0);
+ else if (strchr(path, ' '))
+ printf("\"%s\"", path);
+ else
+ printf("%s", path);
+}
+
+static void *anonymize_path_component(const void *path, size_t *len)
+{
+ static int counter;
+ struct strbuf out = STRBUF_INIT;
+ strbuf_addf(&out, "path%d", counter++);
+ return strbuf_detach(&out, len);
+}
+
+static void print_path(const char *path)
+{
+ if (!anonymize)
+ print_path_1(path);
+ else {
+ static struct hashmap paths;
+ static struct strbuf anon = STRBUF_INIT;
+
+ anonymize_path(&anon, path, &paths, anonymize_path_component);
+ print_path_1(anon.buf);
+ strbuf_reset(&anon);
+ }
+}
+
+static void *generate_fake_sha1(const void *old, size_t *len)
+{
+ static uint32_t counter = 1; /* avoid null sha1 */
+ unsigned char *out = xcalloc(20, 1);
+ put_be32(out + 16, counter++);
+ return out;
+}
+
+static const unsigned char *anonymize_sha1(const unsigned char *sha1)
+{
+ static struct hashmap sha1s;
+ size_t len = 20;
+ return anonymize_mem(&sha1s, generate_fake_sha1, sha1, &len);
+}
+
+static void show_filemodify(struct diff_queue_struct *q,
+ struct diff_options *options, void *data)
+{
+ int i;
+
+ /*
+ * Handle files below a directory first, in case they are all deleted
+ * and the directory changes to a file or symlink.
+ */
+ qsort(q->queue, q->nr, sizeof(q->queue[0]), depth_first);
+
+ for (i = 0; i < q->nr; i++) {
+ struct diff_filespec *ospec = q->queue[i]->one;
+ struct diff_filespec *spec = q->queue[i]->two;
+
+ switch (q->queue[i]->status) {
+ case DIFF_STATUS_DELETED:
+ printf("D ");
+ print_path(spec->path);
+ putchar('\n');
+ break;
+
+ case DIFF_STATUS_COPIED:
+ case DIFF_STATUS_RENAMED:
+ printf("%c ", q->queue[i]->status);
+ print_path(ospec->path);
+ putchar(' ');
+ print_path(spec->path);
+ putchar('\n');
+
+ if (!hashcmp(ospec->sha1, spec->sha1) &&
+ ospec->mode == spec->mode)
+ break;
+ /* fallthrough */
+
+ case DIFF_STATUS_TYPE_CHANGED:
+ case DIFF_STATUS_MODIFIED:
+ case DIFF_STATUS_ADDED:
+ /*
+ * Links refer to objects in another repositories;
+ * output the SHA-1 verbatim.
+ */
+ if (no_data || S_ISGITLINK(spec->mode))
+ printf("M %06o %s ", spec->mode,
+ sha1_to_hex(anonymize ?
+ anonymize_sha1(spec->sha1) :
+ spec->sha1));
+ else {
+ struct object *object = lookup_object(spec->sha1);
+ printf("M %06o :%d ", spec->mode,
+ get_object_mark(object));
+ }
+ print_path(spec->path);
+ putchar('\n');
+ break;
+
+ default:
+ die("Unexpected comparison status '%c' for %s, %s",
+ q->queue[i]->status,
+ ospec->path ? ospec->path : "none",
+ spec->path ? spec->path : "none");
+ }
+ }
+}
+
+static const char *find_encoding(const char *begin, const char *end)
+{
+ const char *needle = "\nencoding ";
+ char *bol, *eol;
+
+ bol = memmem(begin, end ? end - begin : strlen(begin),
+ needle, strlen(needle));
+ if (!bol)
+ return git_commit_encoding;
+ bol += strlen(needle);
+ eol = strchrnul(bol, '\n');
+ *eol = '\0';
+ return bol;
+}
+
+static void *anonymize_ref_component(const void *old, size_t *len)
+{
+ static int counter;
+ struct strbuf out = STRBUF_INIT;
+ strbuf_addf(&out, "ref%d", counter++);
+ return strbuf_detach(&out, len);
+}
+
+static const char *anonymize_refname(const char *refname)
+{
+ /*
+ * If any of these prefixes is found, we will leave it intact
+ * so that tags remain tags and so forth.
+ */
+ static const char *prefixes[] = {
+ "refs/heads/",
+ "refs/tags/",
+ "refs/remotes/",
+ "refs/"
+ };
+ static struct hashmap refs;
+ static struct strbuf anon = STRBUF_INIT;
+ int i;
+
+ /*
+ * We also leave "master" as a special case, since it does not reveal
+ * anything interesting.
+ */
+ if (!strcmp(refname, "refs/heads/master"))
+ return refname;
+
+ strbuf_reset(&anon);
+ for (i = 0; i < ARRAY_SIZE(prefixes); i++) {
+ if (skip_prefix(refname, prefixes[i], &refname)) {
+ strbuf_addstr(&anon, prefixes[i]);
+ break;
+ }
+ }
+
+ anonymize_path(&anon, refname, &refs, anonymize_ref_component);
+ return anon.buf;
+}
+
+/*
+ * We do not even bother to cache commit messages, as they are unlikely
+ * to be repeated verbatim, and it is not that interesting when they are.
+ */
+static char *anonymize_commit_message(const char *old)
+{
+ static int counter;
+ return xstrfmt("subject %d\n\nbody\n", counter++);
+}
+
+static struct hashmap idents;
+static void *anonymize_ident(const void *old, size_t *len)
+{
+ static int counter;
+ struct strbuf out = STRBUF_INIT;
+ strbuf_addf(&out, "User %d <user%d@example.com>", counter, counter);
+ counter++;
+ return strbuf_detach(&out, len);
+}
+
+/*
+ * Our strategy here is to anonymize the names and email addresses,
+ * but keep timestamps intact, as they influence things like traversal
+ * order (and by themselves should not be too revealing).
+ */
+static void anonymize_ident_line(const char **beg, const char **end)
+{
+ static struct strbuf buffers[] = { STRBUF_INIT, STRBUF_INIT };
+ static unsigned which_buffer;
+
+ struct strbuf *out;
+ struct ident_split split;
+ const char *end_of_header;
+
+ out = &buffers[which_buffer++];
+ which_buffer %= ARRAY_SIZE(buffers);
+ strbuf_reset(out);
+
+ /* skip "committer", "author", "tagger", etc */
+ end_of_header = strchr(*beg, ' ');
+ if (!end_of_header)
+ die("BUG: malformed line fed to anonymize_ident_line: %.*s",
+ (int)(*end - *beg), *beg);
+ end_of_header++;
+ strbuf_add(out, *beg, end_of_header - *beg);
+
+ if (!split_ident_line(&split, end_of_header, *end - end_of_header) &&
+ split.date_begin) {
+ const char *ident;
+ size_t len;
+
+ len = split.mail_end - split.name_begin;
+ ident = anonymize_mem(&idents, anonymize_ident,
+ split.name_begin, &len);
+ strbuf_add(out, ident, len);
+ strbuf_addch(out, ' ');
+ strbuf_add(out, split.date_begin, split.tz_end - split.date_begin);
+ } else {
+ strbuf_addstr(out, "Malformed Ident <malformed@example.com> 0 -0000");
+ }
+
+ *beg = out->buf;
+ *end = out->buf + out->len;
+}
+
+static void handle_commit(struct commit *commit, struct rev_info *rev)
+{
+ int saved_output_format = rev->diffopt.output_format;
+ const char *commit_buffer;
+ const char *author, *author_end, *committer, *committer_end;
+ const char *encoding, *message;
+ char *reencoded = NULL;
+ struct commit_list *p;
+ const char *refname;
+ int i;
+
+ rev->diffopt.output_format = DIFF_FORMAT_CALLBACK;
+
+ parse_commit_or_die(commit);
+ commit_buffer = get_commit_buffer(commit, NULL);
+ author = strstr(commit_buffer, "\nauthor ");
+ if (!author)
+ die ("Could not find author in commit %s",
+ sha1_to_hex(commit->object.sha1));
+ author++;
+ author_end = strchrnul(author, '\n');
+ committer = strstr(author_end, "\ncommitter ");
+ if (!committer)
+ die ("Could not find committer in commit %s",
+ sha1_to_hex(commit->object.sha1));
+ committer++;
+ committer_end = strchrnul(committer, '\n');
+ message = strstr(committer_end, "\n\n");
+ encoding = find_encoding(committer_end, message);
+ if (message)
+ message += 2;
+
+ if (commit->parents &&
+ get_object_mark(&commit->parents->item->object) != 0 &&
+ !full_tree) {
+ parse_commit_or_die(commit->parents->item);
+ diff_tree_sha1(commit->parents->item->tree->object.sha1,
+ commit->tree->object.sha1, "", &rev->diffopt);
+ }
+ else
+ diff_root_tree_sha1(commit->tree->object.sha1,
+ "", &rev->diffopt);
+
+ /* Export the referenced blobs, and remember the marks. */
+ for (i = 0; i < diff_queued_diff.nr; i++)
+ if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode))
+ export_blob(diff_queued_diff.queue[i]->two->sha1);
+
+ refname = commit->util;
+ if (anonymize) {
+ refname = anonymize_refname(refname);
+ anonymize_ident_line(&committer, &committer_end);
+ anonymize_ident_line(&author, &author_end);
+ }
+
+ mark_next_object(&commit->object);
+ if (anonymize)
+ reencoded = anonymize_commit_message(message);
+ else if (!is_encoding_utf8(encoding))
+ reencoded = reencode_string(message, "UTF-8", encoding);
+ if (!commit->parents)
+ printf("reset %s\n", refname);
+ printf("commit %s\nmark :%"PRIu32"\n%.*s\n%.*s\ndata %u\n%s",
+ refname, last_idnum,
+ (int)(author_end - author), author,
+ (int)(committer_end - committer), committer,
+ (unsigned)(reencoded
+ ? strlen(reencoded) : message
+ ? strlen(message) : 0),
+ reencoded ? reencoded : message ? message : "");
+ free(reencoded);
+ unuse_commit_buffer(commit, commit_buffer);
+
+ for (i = 0, p = commit->parents; p; p = p->next) {
+ int mark = get_object_mark(&p->item->object);
+ if (!mark)
+ continue;
+ if (i == 0)
+ printf("from :%d\n", mark);
+ else
+ printf("merge :%d\n", mark);
+ i++;
+ }
+
+ if (full_tree)
+ printf("deleteall\n");
+ log_tree_diff_flush(rev);
+ rev->diffopt.output_format = saved_output_format;
+
+ printf("\n");
+
+ show_progress();
+}
+
+static void *anonymize_tag(const void *old, size_t *len)
+{
+ static int counter;
+ struct strbuf out = STRBUF_INIT;
+ strbuf_addf(&out, "tag message %d", counter++);
+ return strbuf_detach(&out, len);
+}
+
+static void handle_tail(struct object_array *commits, struct rev_info *revs)
+{
+ struct commit *commit;
+ while (commits->nr) {
+ commit = (struct commit *)commits->objects[commits->nr - 1].item;
+ if (has_unshown_parent(commit))
+ return;
+ handle_commit(commit, revs);
+ commits->nr--;
+ }
+}
+
+static void handle_tag(const char *name, struct tag *tag)
+{
+ unsigned long size;
+ enum object_type type;
+ char *buf;
+ const char *tagger, *tagger_end, *message;
+ size_t message_size = 0;
+ struct object *tagged;
+ int tagged_mark;
+ struct commit *p;
+
+ /* Trees have no identifier in fast-export output, thus we have no way
+ * to output tags of trees, tags of tags of trees, etc. Simply omit
+ * such tags.
+ */
+ tagged = tag->tagged;
+ while (tagged->type == OBJ_TAG) {
+ tagged = ((struct tag *)tagged)->tagged;
+ }
+ if (tagged->type == OBJ_TREE) {
+ warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.",
+ sha1_to_hex(tag->object.sha1));
+ return;
+ }
+
+ buf = read_sha1_file(tag->object.sha1, &type, &size);
+ if (!buf)
+ die ("Could not read tag %s", sha1_to_hex(tag->object.sha1));
+ message = memmem(buf, size, "\n\n", 2);
+ if (message) {
+ message += 2;
+ message_size = strlen(message);
+ }
+ tagger = memmem(buf, message ? message - buf : size, "\ntagger ", 8);
+ if (!tagger) {
+ if (fake_missing_tagger)
+ tagger = "tagger Unspecified Tagger "
+ "<unspecified-tagger> 0 +0000";
+ else
+ tagger = "";
+ tagger_end = tagger + strlen(tagger);
+ } else {
+ tagger++;
+ tagger_end = strchrnul(tagger, '\n');
+ if (anonymize)
+ anonymize_ident_line(&tagger, &tagger_end);
+ }
+
+ if (anonymize) {
+ name = anonymize_refname(name);
+ if (message) {
+ static struct hashmap tags;
+ message = anonymize_mem(&tags, anonymize_tag,
+ message, &message_size);
+ }
+ }
+
+ /* handle signed tags */
+ if (message) {
+ const char *signature = strstr(message,
+ "\n-----BEGIN PGP SIGNATURE-----\n");
+ if (signature)
+ switch(signed_tag_mode) {
+ case ABORT:
+ die ("Encountered signed tag %s; use "
+ "--signed-tags=<mode> to handle it.",
+ sha1_to_hex(tag->object.sha1));
+ case WARN:
+ warning ("Exporting signed tag %s",
+ sha1_to_hex(tag->object.sha1));
+ /* fallthru */
+ case VERBATIM:
+ break;
+ case WARN_STRIP:
+ warning ("Stripping signature from tag %s",
+ sha1_to_hex(tag->object.sha1));
+ /* fallthru */
+ case STRIP:
+ message_size = signature + 1 - message;
+ break;
+ }
+ }
+
+ /* handle tag->tagged having been filtered out due to paths specified */
+ tagged = tag->tagged;
+ tagged_mark = get_object_mark(tagged);
+ if (!tagged_mark) {
+ switch(tag_of_filtered_mode) {
+ case ABORT:
+ die ("Tag %s tags unexported object; use "
+ "--tag-of-filtered-object=<mode> to handle it.",
+ sha1_to_hex(tag->object.sha1));
+ case DROP:
+ /* Ignore this tag altogether */
+ return;
+ case REWRITE:
+ if (tagged->type != OBJ_COMMIT) {
+ die ("Tag %s tags unexported %s!",
+ sha1_to_hex(tag->object.sha1),
+ typename(tagged->type));
+ }
+ p = (struct commit *)tagged;
+ for (;;) {
+ if (p->parents && p->parents->next)
+ break;
+ if (p->object.flags & UNINTERESTING)
+ break;
+ if (!(p->object.flags & TREESAME))
+ break;
+ if (!p->parents)
+ die ("Can't find replacement commit for tag %s\n",
+ sha1_to_hex(tag->object.sha1));
+ p = p->parents->item;
+ }
+ tagged_mark = get_object_mark(&p->object);
+ }
+ }
+
+ if (starts_with(name, "refs/tags/"))
+ name += 10;
+ printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n",
+ name, tagged_mark,
+ (int)(tagger_end - tagger), tagger,
+ tagger == tagger_end ? "" : "\n",
+ (int)message_size, (int)message_size, message ? message : "");
+}
+
+static struct commit *get_commit(struct rev_cmdline_entry *e, char *full_name)
+{
+ switch (e->item->type) {
+ case OBJ_COMMIT:
+ return (struct commit *)e->item;
+ case OBJ_TAG: {
+ struct tag *tag = (struct tag *)e->item;
+
+ /* handle nested tags */
+ while (tag && tag->object.type == OBJ_TAG) {
+ parse_object(tag->object.sha1);
+ string_list_append(&extra_refs, full_name)->util = tag;
+ tag = (struct tag *)tag->tagged;
+ }
+ if (!tag)
+ die("Tag %s points nowhere?", e->name);
+ return (struct commit *)tag;
+ break;
+ }
+ default:
+ return NULL;
+ }
+}
+
+static void get_tags_and_duplicates(struct rev_cmdline_info *info)
+{
+ int i;
+
+ for (i = 0; i < info->nr; i++) {
+ struct rev_cmdline_entry *e = info->rev + i;
+ unsigned char sha1[20];
+ struct commit *commit;
+ char *full_name;
+
+ if (e->flags & UNINTERESTING)
+ continue;
+
+ if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1)
+ continue;
+
+ if (refspecs) {
+ char *private;
+ private = apply_refspecs(refspecs, refspecs_nr, full_name);
+ if (private) {
+ free(full_name);
+ full_name = private;
+ }
+ }
+
+ commit = get_commit(e, full_name);
+ if (!commit) {
+ warning("%s: Unexpected object of type %s, skipping.",
+ e->name,
+ typename(e->item->type));
+ continue;
+ }
+
+ switch(commit->object.type) {
+ case OBJ_COMMIT:
+ break;
+ case OBJ_BLOB:
+ export_blob(commit->object.sha1);
+ continue;
+ default: /* OBJ_TAG (nested tags) is already handled */
+ warning("Tag points to object of unexpected type %s, skipping.",
+ typename(commit->object.type));
+ continue;
+ }
+
+ /*
+ * This ref will not be updated through a commit, lets make
+ * sure it gets properly updated eventually.
+ */
+ if (commit->util || commit->object.flags & SHOWN)
+ string_list_append(&extra_refs, full_name)->util = commit;
+ if (!commit->util)
+ commit->util = full_name;
+ }
+}
+
+static void handle_tags_and_duplicates(void)
+{
+ struct commit *commit;
+ int i;
+
+ for (i = extra_refs.nr - 1; i >= 0; i--) {
+ const char *name = extra_refs.items[i].string;
+ struct object *object = extra_refs.items[i].util;
+ switch (object->type) {
+ case OBJ_TAG:
+ handle_tag(name, (struct tag *)object);
+ break;
+ case OBJ_COMMIT:
+ if (anonymize)
+ name = anonymize_refname(name);
+ /* create refs pointing to already seen commits */
+ commit = (struct commit *)object;
+ printf("reset %s\nfrom :%d\n\n", name,
+ get_object_mark(&commit->object));
+ show_progress();
+ break;
+ }
+ }
+}
+
+static void export_marks(char *file)
+{
+ unsigned int i;
+ uint32_t mark;
+ struct object_decoration *deco = idnums.hash;
+ FILE *f;
+ int e = 0;
+
+ f = fopen(file, "w");
+ if (!f)
+ die_errno("Unable to open marks file %s for writing.", file);
+
+ for (i = 0; i < idnums.size; i++) {
+ if (deco->base && deco->base->type == 1) {
+ mark = ptr_to_mark(deco->decoration);
+ if (fprintf(f, ":%"PRIu32" %s\n", mark,
+ sha1_to_hex(deco->base->sha1)) < 0) {
+ e = 1;
+ break;
+ }
+ }
+ deco++;
+ }
+
+ e |= ferror(f);
+ e |= fclose(f);
+ if (e)
+ error("Unable to write marks file %s.", file);
+}
+
+static void import_marks(char *input_file)
+{
+ char line[512];
+ FILE *f = fopen(input_file, "r");
+ if (!f)
+ die_errno("cannot read '%s'", input_file);
+
+ while (fgets(line, sizeof(line), f)) {
+ uint32_t mark;
+ char *line_end, *mark_end;
+ unsigned char sha1[20];
+ struct object *object;
+ struct commit *commit;
+ enum object_type type;
+
+ line_end = strchr(line, '\n');
+ if (line[0] != ':' || !line_end)
+ die("corrupt mark line: %s", line);
+ *line_end = '\0';
+
+ mark = strtoumax(line + 1, &mark_end, 10);
+ if (!mark || mark_end == line + 1
+ || *mark_end != ' ' || get_sha1_hex(mark_end + 1, sha1))
+ die("corrupt mark line: %s", line);
+
+ if (last_idnum < mark)
+ last_idnum = mark;
+
+ type = sha1_object_info(sha1, NULL);
+ if (type < 0)
+ die("object not found: %s", sha1_to_hex(sha1));
+
+ if (type != OBJ_COMMIT)
+ /* only commits */
+ continue;
+
+ commit = lookup_commit(sha1);
+ if (!commit)
+ die("not a commit? can't happen: %s", sha1_to_hex(sha1));
+
+ object = &commit->object;
+
+ if (object->flags & SHOWN)
+ error("Object %s already has a mark", sha1_to_hex(sha1));
+
+ mark_object(object, mark);
+
+ object->flags |= SHOWN;
+ }
+ fclose(f);
+}
+
+static void handle_deletes(void)
+{
+ int i;
+ for (i = 0; i < refspecs_nr; i++) {
+ struct refspec *refspec = &refspecs[i];
+ if (*refspec->src)
+ continue;
+
+ printf("reset %s\nfrom %s\n\n",
+ refspec->dst, sha1_to_hex(null_sha1));
+ }
+}
+
+int cmd_fast_export(int argc, const char **argv, const char *prefix)
+{
+ struct rev_info revs;
+ struct object_array commits = OBJECT_ARRAY_INIT;
+ struct commit *commit;
+ char *export_filename = NULL, *import_filename = NULL;
+ uint32_t lastimportid;
+ struct string_list refspecs_list = STRING_LIST_INIT_NODUP;
+ struct option options[] = {
+ OPT_INTEGER(0, "progress", &progress,
+ N_("show progress after <n> objects")),
+ OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, N_("mode"),
+ N_("select handling of signed tags"),
+ parse_opt_signed_tag_mode),
+ OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode, N_("mode"),
+ N_("select handling of tags that tag filtered objects"),
+ parse_opt_tag_of_filtered_mode),
+ OPT_STRING(0, "export-marks", &export_filename, N_("file"),
+ N_("Dump marks to this file")),
+ OPT_STRING(0, "import-marks", &import_filename, N_("file"),
+ N_("Import marks from this file")),
+ OPT_BOOL(0, "fake-missing-tagger", &fake_missing_tagger,
+ N_("Fake a tagger when tags lack one")),
+ OPT_BOOL(0, "full-tree", &full_tree,
+ N_("Output full tree for each commit")),
+ OPT_BOOL(0, "use-done-feature", &use_done_feature,
+ N_("Use the done feature to terminate the stream")),
+ OPT_BOOL(0, "no-data", &no_data, N_("Skip output of blob data")),
+ OPT_STRING_LIST(0, "refspec", &refspecs_list, N_("refspec"),
+ N_("Apply refspec to exported refs")),
+ OPT_BOOL(0, "anonymize", &anonymize, N_("anonymize output")),
+ OPT_END()
+ };
+
+ if (argc == 1)
+ usage_with_options (fast_export_usage, options);
+
+ /* we handle encodings */
+ git_config(git_default_config, NULL);
+
+ init_revisions(&revs, prefix);
+ revs.topo_order = 1;
+ revs.show_source = 1;
+ revs.rewrite_parents = 1;
+ argc = parse_options(argc, argv, prefix, options, fast_export_usage,
+ PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN);
+ argc = setup_revisions(argc, argv, &revs, NULL);
+ if (argc > 1)
+ usage_with_options (fast_export_usage, options);
+
+ if (refspecs_list.nr) {
+ const char **refspecs_str;
+ int i;
+
+ refspecs_str = xmalloc(sizeof(*refspecs_str) * refspecs_list.nr);
+ for (i = 0; i < refspecs_list.nr; i++)
+ refspecs_str[i] = refspecs_list.items[i].string;
+
+ refspecs_nr = refspecs_list.nr;
+ refspecs = parse_fetch_refspec(refspecs_nr, refspecs_str);
+
+ string_list_clear(&refspecs_list, 1);
+ free(refspecs_str);
+ }
+
+ if (use_done_feature)
+ printf("feature done\n");
+
+ if (import_filename)
+ import_marks(import_filename);
+ lastimportid = last_idnum;
+
+ if (import_filename && revs.prune_data.nr)
+ full_tree = 1;
+
+ get_tags_and_duplicates(&revs.cmdline);
+
+ if (prepare_revision_walk(&revs))
+ die("revision walk setup failed");
+ revs.diffopt.format_callback = show_filemodify;
+ DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
+ while ((commit = get_revision(&revs))) {
+ if (has_unshown_parent(commit)) {
+ add_object_array(&commit->object, NULL, &commits);
+ }
+ else {
+ handle_commit(commit, &revs);
+ handle_tail(&commits, &revs);
+ }
+ }
+
+ handle_tags_and_duplicates();
+ handle_deletes();
+
+ if (export_filename && lastimportid != last_idnum)
+ export_marks(export_filename);
+
+ if (use_done_feature)
+ printf("done\n");
+
+ free_refspec(refspecs_nr, refspecs);
+
+ return 0;
+}
diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
new file mode 100644
index 0000000..4a6b340
--- /dev/null
+++ b/builtin/fetch-pack.c
@@ -0,0 +1,218 @@
+#include "builtin.h"
+#include "pkt-line.h"
+#include "fetch-pack.h"
+#include "remote.h"
+#include "connect.h"
+#include "sha1-array.h"
+
+static const char fetch_pack_usage[] =
+"git fetch-pack [--all] [--stdin] [--quiet | -q] [--keep | -k] [--thin] "
+"[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
+"[--no-progress] [--diag-url] [-v] [<host>:]<directory> [<refs>...]";
+
+static void add_sought_entry_mem(struct ref ***sought, int *nr, int *alloc,
+ const char *name, int namelen)
+{
+ struct ref *ref = xcalloc(1, sizeof(*ref) + namelen + 1);
+ unsigned char sha1[20];
+
+ if (namelen > 41 && name[40] == ' ' && !get_sha1_hex(name, sha1)) {
+ hashcpy(ref->old_sha1, sha1);
+ name += 41;
+ namelen -= 41;
+ }
+
+ memcpy(ref->name, name, namelen);
+ ref->name[namelen] = '\0';
+ (*nr)++;
+ ALLOC_GROW(*sought, *nr, *alloc);
+ (*sought)[*nr - 1] = ref;
+}
+
+static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
+ const char *string)
+{
+ add_sought_entry_mem(sought, nr, alloc, string, strlen(string));
+}
+
+int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
+{
+ int i, ret;
+ struct ref *ref = NULL;
+ const char *dest = NULL;
+ struct ref **sought = NULL;
+ int nr_sought = 0, alloc_sought = 0;
+ int fd[2];
+ char *pack_lockfile = NULL;
+ char **pack_lockfile_ptr = NULL;
+ struct child_process *conn;
+ struct fetch_pack_args args;
+ struct sha1_array shallow = SHA1_ARRAY_INIT;
+
+ packet_trace_identity("fetch-pack");
+
+ memset(&args, 0, sizeof(args));
+ args.uploadpack = "git-upload-pack";
+
+ for (i = 1; i < argc && *argv[i] == '-'; i++) {
+ const char *arg = argv[i];
+
+ if (starts_with(arg, "--upload-pack=")) {
+ args.uploadpack = arg + 14;
+ continue;
+ }
+ if (starts_with(arg, "--exec=")) {
+ args.uploadpack = arg + 7;
+ continue;
+ }
+ if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
+ args.quiet = 1;
+ continue;
+ }
+ if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
+ args.lock_pack = args.keep_pack;
+ args.keep_pack = 1;
+ continue;
+ }
+ if (!strcmp("--thin", arg)) {
+ args.use_thin_pack = 1;
+ continue;
+ }
+ if (!strcmp("--include-tag", arg)) {
+ args.include_tag = 1;
+ continue;
+ }
+ if (!strcmp("--all", arg)) {
+ args.fetch_all = 1;
+ continue;
+ }
+ if (!strcmp("--stdin", arg)) {
+ args.stdin_refs = 1;
+ continue;
+ }
+ if (!strcmp("--diag-url", arg)) {
+ args.diag_url = 1;
+ continue;
+ }
+ if (!strcmp("-v", arg)) {
+ args.verbose = 1;
+ continue;
+ }
+ if (starts_with(arg, "--depth=")) {
+ args.depth = strtol(arg + 8, NULL, 0);
+ continue;
+ }
+ if (!strcmp("--no-progress", arg)) {
+ args.no_progress = 1;
+ continue;
+ }
+ if (!strcmp("--stateless-rpc", arg)) {
+ args.stateless_rpc = 1;
+ continue;
+ }
+ if (!strcmp("--lock-pack", arg)) {
+ args.lock_pack = 1;
+ pack_lockfile_ptr = &pack_lockfile;
+ continue;
+ }
+ if (!strcmp("--check-self-contained-and-connected", arg)) {
+ args.check_self_contained_and_connected = 1;
+ continue;
+ }
+ if (!strcmp("--cloning", arg)) {
+ args.cloning = 1;
+ continue;
+ }
+ if (!strcmp("--update-shallow", arg)) {
+ args.update_shallow = 1;
+ continue;
+ }
+ usage(fetch_pack_usage);
+ }
+
+ if (i < argc)
+ dest = argv[i++];
+ else
+ usage(fetch_pack_usage);
+
+ /*
+ * Copy refs from cmdline to growable list, then append any
+ * refs from the standard input:
+ */
+ for (; i < argc; i++)
+ add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
+ if (args.stdin_refs) {
+ if (args.stateless_rpc) {
+ /* in stateless RPC mode we use pkt-line to read
+ * from stdin, until we get a flush packet
+ */
+ for (;;) {
+ char *line = packet_read_line(0, NULL);
+ if (!line)
+ break;
+ add_sought_entry(&sought, &nr_sought, &alloc_sought, line);
+ }
+ }
+ else {
+ /* read from stdin one ref per line, until EOF */
+ struct strbuf line = STRBUF_INIT;
+ while (strbuf_getline(&line, stdin, '\n') != EOF)
+ add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
+ strbuf_release(&line);
+ }
+ }
+
+ if (args.stateless_rpc) {
+ conn = NULL;
+ fd[0] = 0;
+ fd[1] = 1;
+ } else {
+ int flags = args.verbose ? CONNECT_VERBOSE : 0;
+ if (args.diag_url)
+ flags |= CONNECT_DIAG_URL;
+ conn = git_connect(fd, dest, args.uploadpack,
+ flags);
+ if (!conn)
+ return args.diag_url ? 0 : 1;
+ }
+ get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);
+
+ ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
+ &shallow, pack_lockfile_ptr);
+ if (pack_lockfile) {
+ printf("lock %s\n", pack_lockfile);
+ fflush(stdout);
+ }
+ if (args.check_self_contained_and_connected &&
+ args.self_contained_and_connected) {
+ printf("connectivity-ok\n");
+ fflush(stdout);
+ }
+ close(fd[0]);
+ close(fd[1]);
+ if (finish_connect(conn))
+ return 1;
+
+ ret = !ref;
+
+ /*
+ * If the heads to pull were given, we should have consumed
+ * all of them by matching the remote. Otherwise, 'git fetch
+ * remote no-such-ref' would silently succeed without issuing
+ * an error.
+ */
+ for (i = 0; i < nr_sought; i++) {
+ if (!sought[i] || sought[i]->matched)
+ continue;
+ error("no such remote ref %s", sought[i]->name);
+ ret = 1;
+ }
+
+ while (ref) {
+ printf("%s %s\n",
+ sha1_to_hex(ref->old_sha1), ref->name);
+ ref = ref->next;
+ }
+
+ return ret;
+}
diff --git a/builtin/fetch.c b/builtin/fetch.c
new file mode 100644
index 0000000..f951265
--- /dev/null
+++ b/builtin/fetch.c
@@ -0,0 +1,1221 @@
+/*
+ * "git fetch"
+ */
+#include "cache.h"
+#include "refs.h"
+#include "commit.h"
+#include "builtin.h"
+#include "string-list.h"
+#include "remote.h"
+#include "transport.h"
+#include "run-command.h"
+#include "parse-options.h"
+#include "sigchain.h"
+#include "submodule.h"
+#include "connected.h"
+#include "argv-array.h"
+
+static const char * const builtin_fetch_usage[] = {
+ N_("git fetch [<options>] [<repository> [<refspec>...]]"),
+ N_("git fetch [<options>] <group>"),
+ N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
+ N_("git fetch --all [<options>]"),
+ NULL
+};
+
+enum {
+ TAGS_UNSET = 0,
+ TAGS_DEFAULT = 1,
+ TAGS_SET = 2
+};
+
+static int fetch_prune_config = -1; /* unspecified */
+static int prune = -1; /* unspecified */
+#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
+
+static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity;
+static int progress = -1, recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
+static int tags = TAGS_DEFAULT, unshallow, update_shallow;
+static const char *depth;
+static const char *upload_pack;
+static struct strbuf default_rla = STRBUF_INIT;
+static struct transport *gtransport;
+static struct transport *gsecondary;
+static const char *submodule_prefix = "";
+static const char *recurse_submodules_default;
+static int shown_url = 0;
+static int refmap_alloc, refmap_nr;
+static const char **refmap_array;
+
+static int option_parse_recurse_submodules(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset) {
+ recurse_submodules = RECURSE_SUBMODULES_OFF;
+ } else {
+ if (arg)
+ recurse_submodules = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
+ else
+ recurse_submodules = RECURSE_SUBMODULES_ON;
+ }
+ return 0;
+}
+
+static int git_fetch_config(const char *k, const char *v, void *cb)
+{
+ if (!strcmp(k, "fetch.prune")) {
+ fetch_prune_config = git_config_bool(k, v);
+ return 0;
+ }
+ return git_default_config(k, v, cb);
+}
+
+static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
+{
+ ALLOC_GROW(refmap_array, refmap_nr + 1, refmap_alloc);
+
+ /*
+ * "git fetch --refmap='' origin foo"
+ * can be used to tell the command not to store anywhere
+ */
+ if (*arg)
+ refmap_array[refmap_nr++] = arg;
+ return 0;
+}
+
+static struct option builtin_fetch_options[] = {
+ OPT__VERBOSITY(&verbosity),
+ OPT_BOOL(0, "all", &all,
+ N_("fetch from all remotes")),
+ OPT_BOOL('a', "append", &append,
+ N_("append to .git/FETCH_HEAD instead of overwriting")),
+ OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
+ N_("path to upload pack on remote end")),
+ OPT__FORCE(&force, N_("force overwrite of local branch")),
+ OPT_BOOL('m', "multiple", &multiple,
+ N_("fetch from multiple remotes")),
+ OPT_SET_INT('t', "tags", &tags,
+ N_("fetch all tags and associated objects"), TAGS_SET),
+ OPT_SET_INT('n', NULL, &tags,
+ N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
+ OPT_BOOL('p', "prune", &prune,
+ N_("prune remote-tracking branches no longer on remote")),
+ { OPTION_CALLBACK, 0, "recurse-submodules", NULL, N_("on-demand"),
+ N_("control recursive fetching of submodules"),
+ PARSE_OPT_OPTARG, option_parse_recurse_submodules },
+ OPT_BOOL(0, "dry-run", &dry_run,
+ N_("dry run")),
+ OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
+ OPT_BOOL('u', "update-head-ok", &update_head_ok,
+ N_("allow updating of HEAD ref")),
+ OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
+ OPT_STRING(0, "depth", &depth, N_("depth"),
+ N_("deepen history of shallow clone")),
+ { OPTION_SET_INT, 0, "unshallow", &unshallow, NULL,
+ N_("convert to a complete repository"),
+ PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1 },
+ { OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
+ N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
+ { OPTION_STRING, 0, "recurse-submodules-default",
+ &recurse_submodules_default, NULL,
+ N_("default mode for recursion"), PARSE_OPT_HIDDEN },
+ OPT_BOOL(0, "update-shallow", &update_shallow,
+ N_("accept refs that update .git/shallow")),
+ { OPTION_CALLBACK, 0, "refmap", NULL, N_("refmap"),
+ N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg },
+ OPT_END()
+};
+
+static void unlock_pack(void)
+{
+ if (gtransport)
+ transport_unlock_pack(gtransport);
+ if (gsecondary)
+ transport_unlock_pack(gsecondary);
+}
+
+static void unlock_pack_on_signal(int signo)
+{
+ unlock_pack();
+ sigchain_pop(signo);
+ raise(signo);
+}
+
+static void add_merge_config(struct ref **head,
+ const struct ref *remote_refs,
+ struct branch *branch,
+ struct ref ***tail)
+{
+ int i;
+
+ for (i = 0; i < branch->merge_nr; i++) {
+ struct ref *rm, **old_tail = *tail;
+ struct refspec refspec;
+
+ for (rm = *head; rm; rm = rm->next) {
+ if (branch_merge_matches(branch, i, rm->name)) {
+ rm->fetch_head_status = FETCH_HEAD_MERGE;
+ break;
+ }
+ }
+ if (rm)
+ continue;
+
+ /*
+ * Not fetched to a remote-tracking branch? We need to fetch
+ * it anyway to allow this branch's "branch.$name.merge"
+ * to be honored by 'git pull', but we do not have to
+ * fail if branch.$name.merge is misconfigured to point
+ * at a nonexisting branch. If we were indeed called by
+ * 'git pull', it will notice the misconfiguration because
+ * there is no entry in the resulting FETCH_HEAD marked
+ * for merging.
+ */
+ memset(&refspec, 0, sizeof(refspec));
+ refspec.src = branch->merge[i]->src;
+ get_fetch_map(remote_refs, &refspec, tail, 1);
+ for (rm = *old_tail; rm; rm = rm->next)
+ rm->fetch_head_status = FETCH_HEAD_MERGE;
+ }
+}
+
+static int add_existing(const char *refname, const unsigned char *sha1,
+ int flag, void *cbdata)
+{
+ struct string_list *list = (struct string_list *)cbdata;
+ struct string_list_item *item = string_list_insert(list, refname);
+ item->util = xmalloc(20);
+ hashcpy(item->util, sha1);
+ return 0;
+}
+
+static int will_fetch(struct ref **head, const unsigned char *sha1)
+{
+ struct ref *rm = *head;
+ while (rm) {
+ if (!hashcmp(rm->old_sha1, sha1))
+ return 1;
+ rm = rm->next;
+ }
+ return 0;
+}
+
+static void find_non_local_tags(struct transport *transport,
+ struct ref **head,
+ struct ref ***tail)
+{
+ struct string_list existing_refs = STRING_LIST_INIT_DUP;
+ struct string_list remote_refs = STRING_LIST_INIT_NODUP;
+ const struct ref *ref;
+ struct string_list_item *item = NULL;
+
+ for_each_ref(add_existing, &existing_refs);
+ for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
+ if (!starts_with(ref->name, "refs/tags/"))
+ continue;
+
+ /*
+ * The peeled ref always follows the matching base
+ * ref, so if we see a peeled ref that we don't want
+ * to fetch then we can mark the ref entry in the list
+ * as one to ignore by setting util to NULL.
+ */
+ if (ends_with(ref->name, "^{}")) {
+ if (item && !has_sha1_file(ref->old_sha1) &&
+ !will_fetch(head, ref->old_sha1) &&
+ !has_sha1_file(item->util) &&
+ !will_fetch(head, item->util))
+ item->util = NULL;
+ item = NULL;
+ continue;
+ }
+
+ /*
+ * If item is non-NULL here, then we previously saw a
+ * ref not followed by a peeled reference, so we need
+ * to check if it is a lightweight tag that we want to
+ * fetch.
+ */
+ if (item && !has_sha1_file(item->util) &&
+ !will_fetch(head, item->util))
+ item->util = NULL;
+
+ item = NULL;
+
+ /* skip duplicates and refs that we already have */
+ if (string_list_has_string(&remote_refs, ref->name) ||
+ string_list_has_string(&existing_refs, ref->name))
+ continue;
+
+ item = string_list_insert(&remote_refs, ref->name);
+ item->util = (void *)ref-&