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-rw-r--r--builtin/stash.c1644
1 files changed, 1644 insertions, 0 deletions
diff --git a/builtin/stash.c b/builtin/stash.c
new file mode 100644
index 0000000..4ad3adf
--- /dev/null
+++ b/builtin/stash.c
@@ -0,0 +1,1644 @@
+#define USE_THE_INDEX_COMPATIBILITY_MACROS
+#include "builtin.h"
+#include "config.h"
+#include "parse-options.h"
+#include "refs.h"
+#include "lockfile.h"
+#include "cache-tree.h"
+#include "unpack-trees.h"
+#include "merge-recursive.h"
+#include "argv-array.h"
+#include "run-command.h"
+#include "dir.h"
+#include "rerere.h"
+#include "revision.h"
+#include "log-tree.h"
+#include "diffcore.h"
+#include "exec-cmd.h"
+
+#define INCLUDE_ALL_FILES 2
+
+static const char * const git_stash_usage[] = {
+ N_("git stash list [<options>]"),
+ N_("git stash show [<options>] [<stash>]"),
+ N_("git stash drop [-q|--quiet] [<stash>]"),
+ N_("git stash ( pop | apply ) [--index] [-q|--quiet] [<stash>]"),
+ N_("git stash branch <branchname> [<stash>]"),
+ N_("git stash clear"),
+ N_("git stash [push [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]\n"
+ " [-u|--include-untracked] [-a|--all] [-m|--message <message>]\n"
+ " [--] [<pathspec>...]]"),
+ N_("git stash save [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]\n"
+ " [-u|--include-untracked] [-a|--all] [<message>]"),
+ NULL
+};
+
+static const char * const git_stash_list_usage[] = {
+ N_("git stash list [<options>]"),
+ NULL
+};
+
+static const char * const git_stash_show_usage[] = {
+ N_("git stash show [<options>] [<stash>]"),
+ NULL
+};
+
+static const char * const git_stash_drop_usage[] = {
+ N_("git stash drop [-q|--quiet] [<stash>]"),
+ NULL
+};
+
+static const char * const git_stash_pop_usage[] = {
+ N_("git stash pop [--index] [-q|--quiet] [<stash>]"),
+ NULL
+};
+
+static const char * const git_stash_apply_usage[] = {
+ N_("git stash apply [--index] [-q|--quiet] [<stash>]"),
+ NULL
+};
+
+static const char * const git_stash_branch_usage[] = {
+ N_("git stash branch <branchname> [<stash>]"),
+ NULL
+};
+
+static const char * const git_stash_clear_usage[] = {
+ N_("git stash clear"),
+ NULL
+};
+
+static const char * const git_stash_store_usage[] = {
+ N_("git stash store [-m|--message <message>] [-q|--quiet] <commit>"),
+ NULL
+};
+
+static const char * const git_stash_push_usage[] = {
+ N_("git stash [push [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]\n"
+ " [-u|--include-untracked] [-a|--all] [-m|--message <message>]\n"
+ " [--] [<pathspec>...]]"),
+ NULL
+};
+
+static const char * const git_stash_save_usage[] = {
+ N_("git stash save [-p|--patch] [-k|--[no-]keep-index] [-q|--quiet]\n"
+ " [-u|--include-untracked] [-a|--all] [<message>]"),
+ NULL
+};
+
+static const char *ref_stash = "refs/stash";
+static struct strbuf stash_index_path = STRBUF_INIT;
+
+/*
+ * w_commit is set to the commit containing the working tree
+ * b_commit is set to the base commit
+ * i_commit is set to the commit containing the index tree
+ * u_commit is set to the commit containing the untracked files tree
+ * w_tree is set to the working tree
+ * b_tree is set to the base tree
+ * i_tree is set to the index tree
+ * u_tree is set to the untracked files tree
+ */
+struct stash_info {
+ struct object_id w_commit;
+ struct object_id b_commit;
+ struct object_id i_commit;
+ struct object_id u_commit;
+ struct object_id w_tree;
+ struct object_id b_tree;
+ struct object_id i_tree;
+ struct object_id u_tree;
+ struct strbuf revision;
+ int is_stash_ref;
+ int has_u;
+};
+
+static void free_stash_info(struct stash_info *info)
+{
+ strbuf_release(&info->revision);
+}
+
+static void assert_stash_like(struct stash_info *info, const char *revision)
+{
+ if (get_oidf(&info->b_commit, "%s^1", revision) ||
+ get_oidf(&info->w_tree, "%s:", revision) ||
+ get_oidf(&info->b_tree, "%s^1:", revision) ||
+ get_oidf(&info->i_tree, "%s^2:", revision))
+ die(_("'%s' is not a stash-like commit"), revision);
+}
+
+static int get_stash_info(struct stash_info *info, int argc, const char **argv)
+{
+ int ret;
+ char *end_of_rev;
+ char *expanded_ref;
+ const char *revision;
+ const char *commit = NULL;
+ struct object_id dummy;
+ struct strbuf symbolic = STRBUF_INIT;
+
+ if (argc > 1) {
+ int i;
+ struct strbuf refs_msg = STRBUF_INIT;
+
+ for (i = 0; i < argc; i++)
+ strbuf_addf(&refs_msg, " '%s'", argv[i]);
+
+ fprintf_ln(stderr, _("Too many revisions specified:%s"),
+ refs_msg.buf);
+ strbuf_release(&refs_msg);
+
+ return -1;
+ }
+
+ if (argc == 1)
+ commit = argv[0];
+
+ strbuf_init(&info->revision, 0);
+ if (!commit) {
+ if (!ref_exists(ref_stash)) {
+ free_stash_info(info);
+ fprintf_ln(stderr, _("No stash entries found."));
+ return -1;
+ }
+
+ strbuf_addf(&info->revision, "%s@{0}", ref_stash);
+ } else if (strspn(commit, "0123456789") == strlen(commit)) {
+ strbuf_addf(&info->revision, "%s@{%s}", ref_stash, commit);
+ } else {
+ strbuf_addstr(&info->revision, commit);
+ }
+
+ revision = info->revision.buf;
+
+ if (get_oid(revision, &info->w_commit)) {
+ error(_("%s is not a valid reference"), revision);
+ free_stash_info(info);
+ return -1;
+ }
+
+ assert_stash_like(info, revision);
+
+ info->has_u = !get_oidf(&info->u_tree, "%s^3:", revision);
+
+ end_of_rev = strchrnul(revision, '@');
+ strbuf_add(&symbolic, revision, end_of_rev - revision);
+
+ ret = dwim_ref(symbolic.buf, symbolic.len, &dummy, &expanded_ref);
+ strbuf_release(&symbolic);
+ switch (ret) {
+ case 0: /* Not found, but valid ref */
+ info->is_stash_ref = 0;
+ break;
+ case 1:
+ info->is_stash_ref = !strcmp(expanded_ref, ref_stash);
+ break;
+ default: /* Invalid or ambiguous */
+ free_stash_info(info);
+ }
+
+ free(expanded_ref);
+ return !(ret == 0 || ret == 1);
+}
+
+static int do_clear_stash(void)
+{
+ struct object_id obj;
+ if (get_oid(ref_stash, &obj))
+ return 0;
+
+ return delete_ref(NULL, ref_stash, &obj, 0);
+}
+
+static int clear_stash(int argc, const char **argv, const char *prefix)
+{
+ struct option options[] = {
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_clear_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
+
+ if (argc)
+ return error(_("git stash clear with parameters is "
+ "unimplemented"));
+
+ return do_clear_stash();
+}
+
+static int reset_tree(struct object_id *i_tree, int update, int reset)
+{
+ int nr_trees = 1;
+ struct unpack_trees_options opts;
+ struct tree_desc t[MAX_UNPACK_TREES];
+ struct tree *tree;
+ struct lock_file lock_file = LOCK_INIT;
+
+ read_cache_preload(NULL);
+ if (refresh_cache(REFRESH_QUIET))
+ return -1;
+
+ hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
+
+ memset(&opts, 0, sizeof(opts));
+
+ tree = parse_tree_indirect(i_tree);
+ if (parse_tree(tree))
+ return -1;
+
+ init_tree_desc(t, tree->buffer, tree->size);
+
+ opts.head_idx = 1;
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+ opts.merge = 1;
+ opts.reset = reset;
+ opts.update = update;
+ opts.fn = oneway_merge;
+
+ if (unpack_trees(nr_trees, t, &opts))
+ return -1;
+
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ return error(_("unable to write new index file"));
+
+ return 0;
+}
+
+static int diff_tree_binary(struct strbuf *out, struct object_id *w_commit)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+ const char *w_commit_hex = oid_to_hex(w_commit);
+
+ /*
+ * Diff-tree would not be very hard to replace with a native function,
+ * however it should be done together with apply_cached.
+ */
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "diff-tree", "--binary", NULL);
+ argv_array_pushf(&cp.args, "%s^2^..%s^2", w_commit_hex, w_commit_hex);
+
+ return pipe_command(&cp, NULL, 0, out, 0, NULL, 0);
+}
+
+static int apply_cached(struct strbuf *out)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ /*
+ * Apply currently only reads either from stdin or a file, thus
+ * apply_all_patches would have to be updated to optionally take a
+ * buffer.
+ */
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "apply", "--cached", NULL);
+ return pipe_command(&cp, out->buf, out->len, NULL, 0, NULL, 0);
+}
+
+static int reset_head(void)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ /*
+ * Reset is overall quite simple, however there is no current public
+ * API for resetting.
+ */
+ cp.git_cmd = 1;
+ argv_array_push(&cp.args, "reset");
+
+ return run_command(&cp);
+}
+
+static void add_diff_to_buf(struct diff_queue_struct *q,
+ struct diff_options *options,
+ void *data)
+{
+ int i;
+
+ for (i = 0; i < q->nr; i++) {
+ strbuf_addstr(data, q->queue[i]->one->path);
+
+ /* NUL-terminate: will be fed to update-index -z */
+ strbuf_addch(data, '\0');
+ }
+}
+
+static int get_newly_staged(struct strbuf *out, struct object_id *c_tree)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+ const char *c_tree_hex = oid_to_hex(c_tree);
+
+ /*
+ * diff-index is very similar to diff-tree above, and should be
+ * converted together with update_index.
+ */
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "diff-index", "--cached", "--name-only",
+ "--diff-filter=A", NULL);
+ argv_array_push(&cp.args, c_tree_hex);
+ return pipe_command(&cp, NULL, 0, out, 0, NULL, 0);
+}
+
+static int update_index(struct strbuf *out)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ /*
+ * Update-index is very complicated and may need to have a public
+ * function exposed in order to remove this forking.
+ */
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "update-index", "--add", "--stdin", NULL);
+ return pipe_command(&cp, out->buf, out->len, NULL, 0, NULL, 0);
+}
+
+static int restore_untracked(struct object_id *u_tree)
+{
+ int res;
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ /*
+ * We need to run restore files from a given index, but without
+ * affecting the current index, so we use GIT_INDEX_FILE with
+ * run_command to fork processes that will not interfere.
+ */
+ cp.git_cmd = 1;
+ argv_array_push(&cp.args, "read-tree");
+ argv_array_push(&cp.args, oid_to_hex(u_tree));
+ argv_array_pushf(&cp.env_array, "GIT_INDEX_FILE=%s",
+ stash_index_path.buf);
+ if (run_command(&cp)) {
+ remove_path(stash_index_path.buf);
+ return -1;
+ }
+
+ child_process_init(&cp);
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "checkout-index", "--all", NULL);
+ argv_array_pushf(&cp.env_array, "GIT_INDEX_FILE=%s",
+ stash_index_path.buf);
+
+ res = run_command(&cp);
+ remove_path(stash_index_path.buf);
+ return res;
+}
+
+static int do_apply_stash(const char *prefix, struct stash_info *info,
+ int index, int quiet)
+{
+ int ret;
+ int has_index = index;
+ struct merge_options o;
+ struct object_id c_tree;
+ struct object_id index_tree;
+ struct commit *result;
+ const struct object_id *bases[1];
+
+ read_cache_preload(NULL);
+ if (refresh_and_write_cache(REFRESH_QUIET, 0, 0))
+ return -1;
+
+ if (write_cache_as_tree(&c_tree, 0, NULL))
+ return error(_("cannot apply a stash in the middle of a merge"));
+
+ if (index) {
+ if (oideq(&info->b_tree, &info->i_tree) ||
+ oideq(&c_tree, &info->i_tree)) {
+ has_index = 0;
+ } else {
+ struct strbuf out = STRBUF_INIT;
+
+ if (diff_tree_binary(&out, &info->w_commit)) {
+ strbuf_release(&out);
+ return error(_("could not generate diff %s^!."),
+ oid_to_hex(&info->w_commit));
+ }
+
+ ret = apply_cached(&out);
+ strbuf_release(&out);
+ if (ret)
+ return error(_("conflicts in index."
+ "Try without --index."));
+
+ discard_cache();
+ read_cache();
+ if (write_cache_as_tree(&index_tree, 0, NULL))
+ return error(_("could not save index tree"));
+
+ reset_head();
+ discard_cache();
+ read_cache();
+ }
+ }
+
+ if (info->has_u && restore_untracked(&info->u_tree))
+ return error(_("could not restore untracked files from stash"));
+
+ init_merge_options(&o, the_repository);
+
+ o.branch1 = "Updated upstream";
+ o.branch2 = "Stashed changes";
+
+ if (oideq(&info->b_tree, &c_tree))
+ o.branch1 = "Version stash was based on";
+
+ if (quiet)
+ o.verbosity = 0;
+
+ if (o.verbosity >= 3)
+ printf_ln(_("Merging %s with %s"), o.branch1, o.branch2);
+
+ bases[0] = &info->b_tree;
+
+ ret = merge_recursive_generic(&o, &c_tree, &info->w_tree, 1, bases,
+ &result);
+ if (ret) {
+ rerere(0);
+
+ if (index)
+ fprintf_ln(stderr, _("Index was not unstashed."));
+
+ return ret;
+ }
+
+ if (has_index) {
+ if (reset_tree(&index_tree, 0, 0))
+ return -1;
+ } else {
+ struct strbuf out = STRBUF_INIT;
+
+ if (get_newly_staged(&out, &c_tree)) {
+ strbuf_release(&out);
+ return -1;
+ }
+
+ if (reset_tree(&c_tree, 0, 1)) {
+ strbuf_release(&out);
+ return -1;
+ }
+
+ ret = update_index(&out);
+ strbuf_release(&out);
+ if (ret)
+ return -1;
+
+ /* read back the result of update_index() back from the disk */
+ discard_cache();
+ read_cache();
+ }
+
+ if (!quiet) {
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ /*
+ * Status is quite simple and could be replaced with calls to
+ * wt_status in the future, but it adds complexities which may
+ * require more tests.
+ */
+ cp.git_cmd = 1;
+ cp.dir = prefix;
+ argv_array_pushf(&cp.env_array, GIT_WORK_TREE_ENVIRONMENT"=%s",
+ absolute_path(get_git_work_tree()));
+ argv_array_pushf(&cp.env_array, GIT_DIR_ENVIRONMENT"=%s",
+ absolute_path(get_git_dir()));
+ argv_array_push(&cp.args, "status");
+ run_command(&cp);
+ }
+
+ return 0;
+}
+
+static int apply_stash(int argc, const char **argv, const char *prefix)
+{
+ int ret;
+ int quiet = 0;
+ int index = 0;
+ struct stash_info info;
+ struct option options[] = {
+ OPT__QUIET(&quiet, N_("be quiet, only report errors")),
+ OPT_BOOL(0, "index", &index,
+ N_("attempt to recreate the index")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_apply_usage, 0);
+
+ if (get_stash_info(&info, argc, argv))
+ return -1;
+
+ ret = do_apply_stash(prefix, &info, index, quiet);
+ free_stash_info(&info);
+ return ret;
+}
+
+static int do_drop_stash(struct stash_info *info, int quiet)
+{
+ int ret;
+ struct child_process cp_reflog = CHILD_PROCESS_INIT;
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ /*
+ * reflog does not provide a simple function for deleting refs. One will
+ * need to be added to avoid implementing too much reflog code here
+ */
+
+ cp_reflog.git_cmd = 1;
+ argv_array_pushl(&cp_reflog.args, "reflog", "delete", "--updateref",
+ "--rewrite", NULL);
+ argv_array_push(&cp_reflog.args, info->revision.buf);
+ ret = run_command(&cp_reflog);
+ if (!ret) {
+ if (!quiet)
+ printf_ln(_("Dropped %s (%s)"), info->revision.buf,
+ oid_to_hex(&info->w_commit));
+ } else {
+ return error(_("%s: Could not drop stash entry"),
+ info->revision.buf);
+ }
+
+ /*
+ * This could easily be replaced by get_oid, but currently it will throw
+ * a fatal error when a reflog is empty, which we can not recover from.
+ */
+ cp.git_cmd = 1;
+ /* Even though --quiet is specified, rev-parse still outputs the hash */
+ cp.no_stdout = 1;
+ argv_array_pushl(&cp.args, "rev-parse", "--verify", "--quiet", NULL);
+ argv_array_pushf(&cp.args, "%s@{0}", ref_stash);
+ ret = run_command(&cp);
+
+ /* do_clear_stash if we just dropped the last stash entry */
+ if (ret)
+ do_clear_stash();
+
+ return 0;
+}
+
+static void assert_stash_ref(struct stash_info *info)
+{
+ if (!info->is_stash_ref) {
+ error(_("'%s' is not a stash reference"), info->revision.buf);
+ free_stash_info(info);
+ exit(1);
+ }
+}
+
+static int drop_stash(int argc, const char **argv, const char *prefix)
+{
+ int ret;
+ int quiet = 0;
+ struct stash_info info;
+ struct option options[] = {
+ OPT__QUIET(&quiet, N_("be quiet, only report errors")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_drop_usage, 0);
+
+ if (get_stash_info(&info, argc, argv))
+ return -1;
+
+ assert_stash_ref(&info);
+
+ ret = do_drop_stash(&info, quiet);
+ free_stash_info(&info);
+ return ret;
+}
+
+static int pop_stash(int argc, const char **argv, const char *prefix)
+{
+ int ret;
+ int index = 0;
+ int quiet = 0;
+ struct stash_info info;
+ struct option options[] = {
+ OPT__QUIET(&quiet, N_("be quiet, only report errors")),
+ OPT_BOOL(0, "index", &index,
+ N_("attempt to recreate the index")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_pop_usage, 0);
+
+ if (get_stash_info(&info, argc, argv))
+ return -1;
+
+ assert_stash_ref(&info);
+ if ((ret = do_apply_stash(prefix, &info, index, quiet)))
+ printf_ln(_("The stash entry is kept in case "
+ "you need it again."));
+ else
+ ret = do_drop_stash(&info, quiet);
+
+ free_stash_info(&info);
+ return ret;
+}
+
+static int branch_stash(int argc, const char **argv, const char *prefix)
+{
+ int ret;
+ const char *branch = NULL;
+ struct stash_info info;
+ struct child_process cp = CHILD_PROCESS_INIT;
+ struct option options[] = {
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_branch_usage, 0);
+
+ if (!argc) {
+ fprintf_ln(stderr, _("No branch name specified"));
+ return -1;
+ }
+
+ branch = argv[0];
+
+ if (get_stash_info(&info, argc - 1, argv + 1))
+ return -1;
+
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "checkout", "-b", NULL);
+ argv_array_push(&cp.args, branch);
+ argv_array_push(&cp.args, oid_to_hex(&info.b_commit));
+ ret = run_command(&cp);
+ if (!ret)
+ ret = do_apply_stash(prefix, &info, 1, 0);
+ if (!ret && info.is_stash_ref)
+ ret = do_drop_stash(&info, 0);
+
+ free_stash_info(&info);
+
+ return ret;
+}
+
+static int list_stash(int argc, const char **argv, const char *prefix)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+ struct option options[] = {
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_list_usage,
+ PARSE_OPT_KEEP_UNKNOWN);
+
+ if (!ref_exists(ref_stash))
+ return 0;
+
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "log", "--format=%gd: %gs", "-g",
+ "--first-parent", "-m", NULL);
+ argv_array_pushv(&cp.args, argv);
+ argv_array_push(&cp.args, ref_stash);
+ argv_array_push(&cp.args, "--");
+ return run_command(&cp);
+}
+
+static int show_stat = 1;
+static int show_patch;
+
+static int git_stash_config(const char *var, const char *value, void *cb)
+{
+ if (!strcmp(var, "stash.showstat")) {
+ show_stat = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp(var, "stash.showpatch")) {
+ show_patch = git_config_bool(var, value);
+ return 0;
+ }
+ return git_default_config(var, value, cb);
+}
+
+static int show_stash(int argc, const char **argv, const char *prefix)
+{
+ int i;
+ int ret = 0;
+ struct stash_info info;
+ struct rev_info rev;
+ struct argv_array stash_args = ARGV_ARRAY_INIT;
+ struct argv_array revision_args = ARGV_ARRAY_INIT;
+ struct option options[] = {
+ OPT_END()
+ };
+
+ init_diff_ui_defaults();
+ git_config(git_diff_ui_config, NULL);
+ init_revisions(&rev, prefix);
+
+ argv_array_push(&revision_args, argv[0]);
+ for (i = 1; i < argc; i++) {
+ if (argv[i][0] != '-')
+ argv_array_push(&stash_args, argv[i]);
+ else
+ argv_array_push(&revision_args, argv[i]);
+ }
+
+ ret = get_stash_info(&info, stash_args.argc, stash_args.argv);
+ argv_array_clear(&stash_args);
+ if (ret)
+ return -1;
+
+ /*
+ * The config settings are applied only if there are not passed
+ * any options.
+ */
+ if (revision_args.argc == 1) {
+ git_config(git_stash_config, NULL);
+ if (show_stat)
+ rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT;
+
+ if (show_patch)
+ rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
+
+ if (!show_stat && !show_patch) {
+ free_stash_info(&info);
+ return 0;
+ }
+ }
+
+ argc = setup_revisions(revision_args.argc, revision_args.argv, &rev, NULL);
+ if (argc > 1) {
+ free_stash_info(&info);
+ usage_with_options(git_stash_show_usage, options);
+ }
+ if (!rev.diffopt.output_format) {
+ rev.diffopt.output_format = DIFF_FORMAT_PATCH;
+ diff_setup_done(&rev.diffopt);
+ }
+
+ rev.diffopt.flags.recursive = 1;
+ setup_diff_pager(&rev.diffopt);
+ diff_tree_oid(&info.b_commit, &info.w_commit, "", &rev.diffopt);
+ log_tree_diff_flush(&rev);
+
+ free_stash_info(&info);
+ return diff_result_code(&rev.diffopt, 0);
+}
+
+static int do_store_stash(const struct object_id *w_commit, const char *stash_msg,
+ int quiet)
+{
+ if (!stash_msg)
+ stash_msg = "Created via \"git stash store\".";
+
+ if (update_ref(stash_msg, ref_stash, w_commit, NULL,
+ REF_FORCE_CREATE_REFLOG,
+ quiet ? UPDATE_REFS_QUIET_ON_ERR :
+ UPDATE_REFS_MSG_ON_ERR)) {
+ if (!quiet) {
+ fprintf_ln(stderr, _("Cannot update %s with %s"),
+ ref_stash, oid_to_hex(w_commit));
+ }
+ return -1;
+ }
+
+ return 0;
+}
+
+static int store_stash(int argc, const char **argv, const char *prefix)
+{
+ int quiet = 0;
+ const char *stash_msg = NULL;
+ struct object_id obj;
+ struct object_context dummy;
+ struct option options[] = {
+ OPT__QUIET(&quiet, N_("be quiet")),
+ OPT_STRING('m', "message", &stash_msg, "message",
+ N_("stash message")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_store_usage,
+ PARSE_OPT_KEEP_UNKNOWN);
+
+ if (argc != 1) {
+ if (!quiet)
+ fprintf_ln(stderr, _("\"git stash store\" requires one "
+ "<commit> argument"));
+ return -1;
+ }
+
+ if (get_oid_with_context(the_repository,
+ argv[0], quiet ? GET_OID_QUIETLY : 0, &obj,
+ &dummy)) {
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot update %s with %s"),
+ ref_stash, argv[0]);
+ return -1;
+ }
+
+ return do_store_stash(&obj, stash_msg, quiet);
+}
+
+static void add_pathspecs(struct argv_array *args,
+ const struct pathspec *ps) {
+ int i;
+
+ for (i = 0; i < ps->nr; i++)
+ argv_array_push(args, ps->items[i].original);
+}
+
+/*
+ * `untracked_files` will be filled with the names of untracked files.
+ * The return value is:
+ *
+ * = 0 if there are not any untracked files
+ * > 0 if there are untracked files
+ */
+static int get_untracked_files(const struct pathspec *ps, int include_untracked,
+ struct strbuf *untracked_files)
+{
+ int i;
+ int max_len;
+ int found = 0;
+ char *seen;
+ struct dir_struct dir;
+
+ memset(&dir, 0, sizeof(dir));
+ if (include_untracked != INCLUDE_ALL_FILES)
+ setup_standard_excludes(&dir);
+
+ seen = xcalloc(ps->nr, 1);
+
+ max_len = fill_directory(&dir, the_repository->index, ps);
+ for (i = 0; i < dir.nr; i++) {
+ struct dir_entry *ent = dir.entries[i];
+ if (dir_path_match(&the_index, ent, ps, max_len, seen)) {
+ found++;
+ strbuf_addstr(untracked_files, ent->name);
+ /* NUL-terminate: will be fed to update-index -z */
+ strbuf_addch(untracked_files, '\0');
+ }
+ free(ent);
+ }
+
+ free(seen);
+ free(dir.entries);
+ free(dir.ignored);
+ clear_directory(&dir);
+ return found;
+}
+
+/*
+ * The return value of `check_changes_tracked_files()` can be:
+ *
+ * < 0 if there was an error
+ * = 0 if there are no changes.
+ * > 0 if there are changes.
+ */
+static int check_changes_tracked_files(const struct pathspec *ps)
+{
+ int result;
+ struct rev_info rev;
+ struct object_id dummy;
+ int ret = 0;
+
+ /* No initial commit. */
+ if (get_oid("HEAD", &dummy))
+ return -1;
+
+ if (read_cache() < 0)
+ return -1;
+
+ init_revisions(&rev, NULL);
+ copy_pathspec(&rev.prune_data, ps);
+
+ rev.diffopt.flags.quick = 1;
+ rev.diffopt.flags.ignore_submodules = 1;
+ rev.abbrev = 0;
+
+ add_head_to_pending(&rev);
+ diff_setup_done(&rev.diffopt);
+
+ result = run_diff_index(&rev, 1);
+ if (diff_result_code(&rev.diffopt, result)) {
+ ret = 1;
+ goto done;
+ }
+
+ object_array_clear(&rev.pending);
+ result = run_diff_files(&rev, 0);
+ if (diff_result_code(&rev.diffopt, result)) {
+ ret = 1;
+ goto done;
+ }
+
+done:
+ clear_pathspec(&rev.prune_data);
+ return ret;
+}
+
+/*
+ * The function will fill `untracked_files` with the names of untracked files
+ * It will return 1 if there were any changes and 0 if there were not.
+ */
+static int check_changes(const struct pathspec *ps, int include_untracked,
+ struct strbuf *untracked_files)
+{
+ int ret = 0;
+ if (check_changes_tracked_files(ps))
+ ret = 1;
+
+ if (include_untracked && get_untracked_files(ps, include_untracked,
+ untracked_files))
+ ret = 1;
+
+ return ret;
+}
+
+static int save_untracked_files(struct stash_info *info, struct strbuf *msg,
+ struct strbuf files)
+{
+ int ret = 0;
+ struct strbuf untracked_msg = STRBUF_INIT;
+ struct child_process cp_upd_index = CHILD_PROCESS_INIT;
+ struct index_state istate = { NULL };
+
+ cp_upd_index.git_cmd = 1;
+ argv_array_pushl(&cp_upd_index.args, "update-index", "-z", "--add",
+ "--remove", "--stdin", NULL);
+ argv_array_pushf(&cp_upd_index.env_array, "GIT_INDEX_FILE=%s",
+ stash_index_path.buf);
+
+ strbuf_addf(&untracked_msg, "untracked files on %s\n", msg->buf);
+ if (pipe_command(&cp_upd_index, files.buf, files.len, NULL, 0,
+ NULL, 0)) {
+ ret = -1;
+ goto done;
+ }
+
+ if (write_index_as_tree(&info->u_tree, &istate, stash_index_path.buf, 0,
+ NULL)) {
+ ret = -1;
+ goto done;
+ }
+
+ if (commit_tree(untracked_msg.buf, untracked_msg.len,
+ &info->u_tree, NULL, &info->u_commit, NULL, NULL)) {
+ ret = -1;
+ goto done;
+ }
+
+done:
+ discard_index(&istate);
+ strbuf_release(&untracked_msg);
+ remove_path(stash_index_path.buf);
+ return ret;
+}
+
+static int stash_patch(struct stash_info *info, const struct pathspec *ps,
+ struct strbuf *out_patch, int quiet)
+{
+ int ret = 0;
+ struct child_process cp_read_tree = CHILD_PROCESS_INIT;
+ struct child_process cp_add_i = CHILD_PROCESS_INIT;
+ struct child_process cp_diff_tree = CHILD_PROCESS_INIT;
+ struct index_state istate = { NULL };
+
+ remove_path(stash_index_path.buf);
+
+ cp_read_tree.git_cmd = 1;
+ argv_array_pushl(&cp_read_tree.args, "read-tree", "HEAD", NULL);
+ argv_array_pushf(&cp_read_tree.env_array, "GIT_INDEX_FILE=%s",
+ stash_index_path.buf);
+ if (run_command(&cp_read_tree)) {
+ ret = -1;
+ goto done;
+ }
+
+ /* Find out what the user wants. */
+ cp_add_i.git_cmd = 1;
+ argv_array_pushl(&cp_add_i.args, "add--interactive", "--patch=stash",
+ "--", NULL);
+ add_pathspecs(&cp_add_i.args, ps);
+ argv_array_pushf(&cp_add_i.env_array, "GIT_INDEX_FILE=%s",
+ stash_index_path.buf);
+ if (run_command(&cp_add_i)) {
+ ret = -1;
+ goto done;
+ }
+
+ /* State of the working tree. */
+ if (write_index_as_tree(&info->w_tree, &istate, stash_index_path.buf, 0,
+ NULL)) {
+ ret = -1;
+ goto done;
+ }
+
+ cp_diff_tree.git_cmd = 1;
+ argv_array_pushl(&cp_diff_tree.args, "diff-tree", "-p", "HEAD",
+ oid_to_hex(&info->w_tree), "--", NULL);
+ if (pipe_command(&cp_diff_tree, NULL, 0, out_patch, 0, NULL, 0)) {
+ ret = -1;
+ goto done;
+ }
+
+ if (!out_patch->len) {
+ if (!quiet)
+ fprintf_ln(stderr, _("No changes selected"));
+ ret = 1;
+ }
+
+done:
+ discard_index(&istate);
+ remove_path(stash_index_path.buf);
+ return ret;
+}
+
+static int stash_working_tree(struct stash_info *info, const struct pathspec *ps)
+{
+ int ret = 0;
+ struct rev_info rev;
+ struct child_process cp_upd_index = CHILD_PROCESS_INIT;
+ struct strbuf diff_output = STRBUF_INIT;
+ struct index_state istate = { NULL };
+
+ init_revisions(&rev, NULL);
+ copy_pathspec(&rev.prune_data, ps);
+
+ set_alternate_index_output(stash_index_path.buf);
+ if (reset_tree(&info->i_tree, 0, 0)) {
+ ret = -1;
+ goto done;
+ }
+ set_alternate_index_output(NULL);
+
+ rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
+ rev.diffopt.format_callback = add_diff_to_buf;
+ rev.diffopt.format_callback_data = &diff_output;
+
+ if (read_cache_preload(&rev.diffopt.pathspec) < 0) {
+ ret = -1;
+ goto done;
+ }
+
+ add_pending_object(&rev, parse_object(the_repository, &info->b_commit),
+ "");
+ if (run_diff_index(&rev, 0)) {
+ ret = -1;
+ goto done;
+ }
+
+ cp_upd_index.git_cmd = 1;
+ argv_array_pushl(&cp_upd_index.args, "update-index",
+ "--ignore-skip-worktree-entries",
+ "-z", "--add", "--remove", "--stdin", NULL);
+ argv_array_pushf(&cp_upd_index.env_array, "GIT_INDEX_FILE=%s",
+ stash_index_path.buf);
+
+ if (pipe_command(&cp_upd_index, diff_output.buf, diff_output.len,
+ NULL, 0, NULL, 0)) {
+ ret = -1;
+ goto done;
+ }
+
+ if (write_index_as_tree(&info->w_tree, &istate, stash_index_path.buf, 0,
+ NULL)) {
+ ret = -1;
+ goto done;
+ }
+
+done:
+ discard_index(&istate);
+ UNLEAK(rev);
+ object_array_clear(&rev.pending);
+ clear_pathspec(&rev.prune_data);
+ strbuf_release(&diff_output);
+ remove_path(stash_index_path.buf);
+ return ret;
+}
+
+static int do_create_stash(const struct pathspec *ps, struct strbuf *stash_msg_buf,
+ int include_untracked, int patch_mode,
+ struct stash_info *info, struct strbuf *patch,
+ int quiet)
+{
+ int ret = 0;
+ int flags = 0;
+ int untracked_commit_option = 0;
+ const char *head_short_sha1 = NULL;
+ const char *branch_ref = NULL;
+ const char *branch_name = "(no branch)";
+ struct commit *head_commit = NULL;
+ struct commit_list *parents = NULL;
+ struct strbuf msg = STRBUF_INIT;
+ struct strbuf commit_tree_label = STRBUF_INIT;
+ struct strbuf untracked_files = STRBUF_INIT;
+
+ prepare_fallback_ident("git stash", "git@stash");
+
+ read_cache_preload(NULL);
+ if (refresh_and_write_cache(REFRESH_QUIET, 0, 0) < 0) {
+ ret = -1;
+ goto done;
+ }
+
+ if (get_oid("HEAD", &info->b_commit)) {
+ if (!quiet)
+ fprintf_ln(stderr, _("You do not have "
+ "the initial commit yet"));
+ ret = -1;
+ goto done;
+ } else {
+ head_commit = lookup_commit(the_repository, &info->b_commit);
+ }
+
+ if (!check_changes(ps, include_untracked, &untracked_files)) {
+ ret = 1;
+ goto done;
+ }
+
+ branch_ref = resolve_ref_unsafe("HEAD", 0, NULL, &flags);
+ if (flags & REF_ISSYMREF)
+ branch_name = strrchr(branch_ref, '/') + 1;
+ head_short_sha1 = find_unique_abbrev(&head_commit->object.oid,
+ DEFAULT_ABBREV);
+ strbuf_addf(&msg, "%s: %s ", branch_name, head_short_sha1);
+ pp_commit_easy(CMIT_FMT_ONELINE, head_commit, &msg);
+
+ strbuf_addf(&commit_tree_label, "index on %s\n", msg.buf);
+ commit_list_insert(head_commit, &parents);
+ if (write_cache_as_tree(&info->i_tree, 0, NULL) ||
+ commit_tree(commit_tree_label.buf, commit_tree_label.len,
+ &info->i_tree, parents, &info->i_commit, NULL, NULL)) {
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot save the current "
+ "index state"));
+ ret = -1;
+ goto done;
+ }
+
+ if (include_untracked) {
+ if (save_untracked_files(info, &msg, untracked_files)) {
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot save "
+ "the untracked files"));
+ ret = -1;
+ goto done;
+ }
+ untracked_commit_option = 1;
+ }
+ if (patch_mode) {
+ ret = stash_patch(info, ps, patch, quiet);
+ if (ret < 0) {
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot save the current "
+ "worktree state"));
+ goto done;
+ } else if (ret > 0) {
+ goto done;
+ }
+ } else {
+ if (stash_working_tree(info, ps)) {
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot save the current "
+ "worktree state"));
+ ret = -1;
+ goto done;
+ }
+ }
+
+ if (!stash_msg_buf->len)
+ strbuf_addf(stash_msg_buf, "WIP on %s", msg.buf);
+ else
+ strbuf_insertf(stash_msg_buf, 0, "On %s: ", branch_name);
+
+ /*
+ * `parents` will be empty after calling `commit_tree()`, so there is
+ * no need to call `free_commit_list()`
+ */
+ parents = NULL;
+ if (untracked_commit_option)
+ commit_list_insert(lookup_commit(the_repository,
+ &info->u_commit),
+ &parents);
+ commit_list_insert(lookup_commit(the_repository, &info->i_commit),
+ &parents);
+ commit_list_insert(head_commit, &parents);
+
+ if (commit_tree(stash_msg_buf->buf, stash_msg_buf->len, &info->w_tree,
+ parents, &info->w_commit, NULL, NULL)) {
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot record "
+ "working tree state"));
+ ret = -1;
+ goto done;
+ }
+
+done:
+ strbuf_release(&commit_tree_label);
+ strbuf_release(&msg);
+ strbuf_release(&untracked_files);
+ return ret;
+}
+
+static int create_stash(int argc, const char **argv, const char *prefix)
+{
+ int ret = 0;
+ struct strbuf stash_msg_buf = STRBUF_INIT;
+ struct stash_info info;
+ struct pathspec ps;
+
+ /* Starting with argv[1], since argv[0] is "create" */
+ strbuf_join_argv(&stash_msg_buf, argc - 1, ++argv, ' ');
+
+ memset(&ps, 0, sizeof(ps));
+ if (!check_changes_tracked_files(&ps))
+ return 0;
+
+ ret = do_create_stash(&ps, &stash_msg_buf, 0, 0, &info,
+ NULL, 0);
+ if (!ret)
+ printf_ln("%s", oid_to_hex(&info.w_commit));
+
+ strbuf_release(&stash_msg_buf);
+ return ret;
+}
+
+static int do_push_stash(const struct pathspec *ps, const char *stash_msg, int quiet,
+ int keep_index, int patch_mode, int include_untracked)
+{
+ int ret = 0;
+ struct stash_info info;
+ struct strbuf patch = STRBUF_INIT;
+ struct strbuf stash_msg_buf = STRBUF_INIT;
+ struct strbuf untracked_files = STRBUF_INIT;
+
+ if (patch_mode && keep_index == -1)
+ keep_index = 1;
+
+ if (patch_mode && include_untracked) {
+ fprintf_ln(stderr, _("Can't use --patch and --include-untracked"
+ " or --all at the same time"));
+ ret = -1;
+ goto done;
+ }
+
+ read_cache_preload(NULL);
+ if (!include_untracked && ps->nr) {
+ int i;
+ char *ps_matched = xcalloc(ps->nr, 1);
+
+ for (i = 0; i < active_nr; i++)
+ ce_path_match(&the_index, active_cache[i], ps,
+ ps_matched);
+
+ if (report_path_error(ps_matched, ps)) {
+ fprintf_ln(stderr, _("Did you forget to 'git add'?"));
+ ret = -1;
+ free(ps_matched);
+ goto done;
+ }
+ free(ps_matched);
+ }
+
+ if (refresh_and_write_cache(REFRESH_QUIET, 0, 0)) {
+ ret = -1;
+ goto done;
+ }
+
+ if (!check_changes(ps, include_untracked, &untracked_files)) {
+ if (!quiet)
+ printf_ln(_("No local changes to save"));
+ goto done;
+ }
+
+ if (!reflog_exists(ref_stash) && do_clear_stash()) {
+ ret = -1;
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot initialize stash"));
+ goto done;
+ }
+
+ if (stash_msg)
+ strbuf_addstr(&stash_msg_buf, stash_msg);
+ if (do_create_stash(ps, &stash_msg_buf, include_untracked, patch_mode,
+ &info, &patch, quiet)) {
+ ret = -1;
+ goto done;
+ }
+
+ if (do_store_stash(&info.w_commit, stash_msg_buf.buf, 1)) {
+ ret = -1;
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot save the current status"));
+ goto done;
+ }
+
+ if (!quiet)
+ printf_ln(_("Saved working directory and index state %s"),
+ stash_msg_buf.buf);
+
+ if (!patch_mode) {
+ if (include_untracked && !ps->nr) {
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "clean", "--force",
+ "--quiet", "-d", NULL);
+ if (include_untracked == INCLUDE_ALL_FILES)
+ argv_array_push(&cp.args, "-x");
+ if (run_command(&cp)) {
+ ret = -1;
+ goto done;
+ }
+ }
+ discard_cache();
+ if (ps->nr) {
+ struct child_process cp_add = CHILD_PROCESS_INIT;
+ struct child_process cp_diff = CHILD_PROCESS_INIT;
+ struct child_process cp_apply = CHILD_PROCESS_INIT;
+ struct strbuf out = STRBUF_INIT;
+
+ cp_add.git_cmd = 1;
+ argv_array_push(&cp_add.args, "add");
+ if (!include_untracked)
+ argv_array_push(&cp_add.args, "-u");
+ if (include_untracked == INCLUDE_ALL_FILES)
+ argv_array_push(&cp_add.args, "--force");
+ argv_array_push(&cp_add.args, "--");
+ add_pathspecs(&cp_add.args, ps);
+ if (run_command(&cp_add)) {
+ ret = -1;
+ goto done;
+ }
+
+ cp_diff.git_cmd = 1;
+ argv_array_pushl(&cp_diff.args, "diff-index", "-p",
+ "--cached", "--binary", "HEAD", "--",
+ NULL);
+ add_pathspecs(&cp_diff.args, ps);
+ if (pipe_command(&cp_diff, NULL, 0, &out, 0, NULL, 0)) {
+ ret = -1;
+ goto done;
+ }
+
+ cp_apply.git_cmd = 1;
+ argv_array_pushl(&cp_apply.args, "apply", "--index",
+ "-R", NULL);
+ if (pipe_command(&cp_apply, out.buf, out.len, NULL, 0,
+ NULL, 0)) {
+ ret = -1;
+ goto done;
+ }
+ } else {
+ struct child_process cp = CHILD_PROCESS_INIT;
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "reset", "--hard", "-q",
+ "--no-recurse-submodules", NULL);
+ if (run_command(&cp)) {
+ ret = -1;
+ goto done;
+ }
+ }
+
+ if (keep_index == 1 && !is_null_oid(&info.i_tree)) {
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "checkout", "--no-overlay",
+ oid_to_hex(&info.i_tree), "--", NULL);
+ if (!ps->nr)
+ argv_array_push(&cp.args, ":/");
+ else
+ add_pathspecs(&cp.args, ps);
+ if (run_command(&cp)) {
+ ret = -1;
+ goto done;
+ }
+ }
+ goto done;
+ } else {
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "apply", "-R", NULL);
+
+ if (pipe_command(&cp, patch.buf, patch.len, NULL, 0, NULL, 0)) {
+ if (!quiet)
+ fprintf_ln(stderr, _("Cannot remove "
+ "worktree changes"));
+ ret = -1;
+ goto done;
+ }
+
+ if (keep_index < 1) {
+ struct child_process cp = CHILD_PROCESS_INIT;
+
+ cp.git_cmd = 1;
+ argv_array_pushl(&cp.args, "reset", "-q", "--", NULL);
+ add_pathspecs(&cp.args, ps);
+ if (run_command(&cp)) {
+ ret = -1;
+ goto done;
+ }
+ }
+ goto done;
+ }
+
+done:
+ strbuf_release(&stash_msg_buf);
+ return ret;
+}
+
+static int push_stash(int argc, const char **argv, const char *prefix)
+{
+ int keep_index = -1;
+ int patch_mode = 0;
+ int include_untracked = 0;
+ int quiet = 0;
+ const char *stash_msg = NULL;
+ struct pathspec ps;
+ struct option options[] = {
+ OPT_BOOL('k', "keep-index", &keep_index,
+ N_("keep index")),
+ OPT_BOOL('p', "patch", &patch_mode,
+ N_("stash in patch mode")),
+ OPT__QUIET(&quiet, N_("quiet mode")),
+ OPT_BOOL('u', "include-untracked", &include_untracked,
+ N_("include untracked files in stash")),
+ OPT_SET_INT('a', "all", &include_untracked,
+ N_("include ignore files"), 2),
+ OPT_STRING('m', "message", &stash_msg, N_("message"),
+ N_("stash message")),
+ OPT_END()
+ };
+
+ if (argc)
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_push_usage,
+ 0);
+
+ parse_pathspec(&ps, 0, PATHSPEC_PREFER_FULL | PATHSPEC_PREFIX_ORIGIN,
+ prefix, argv);
+ return do_push_stash(&ps, stash_msg, quiet, keep_index, patch_mode,
+ include_untracked);
+}
+
+static int save_stash(int argc, const char **argv, const char *prefix)
+{
+ int keep_index = -1;
+ int patch_mode = 0;
+ int include_untracked = 0;
+ int quiet = 0;
+ int ret = 0;
+ const char *stash_msg = NULL;
+ struct pathspec ps;
+ struct strbuf stash_msg_buf = STRBUF_INIT;
+ struct option options[] = {
+ OPT_BOOL('k', "keep-index", &keep_index,
+ N_("keep index")),
+ OPT_BOOL('p', "patch", &patch_mode,
+ N_("stash in patch mode")),
+ OPT__QUIET(&quiet, N_("quiet mode")),
+ OPT_BOOL('u', "include-untracked", &include_untracked,
+ N_("include untracked files in stash")),
+ OPT_SET_INT('a', "all", &include_untracked,
+ N_("include ignore files"), 2),
+ OPT_STRING('m', "message", &stash_msg, "message",
+ N_("stash message")),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, prefix, options,
+ git_stash_save_usage,
+ PARSE_OPT_KEEP_DASHDASH);
+
+ if (argc)
+ stash_msg = strbuf_join_argv(&stash_msg_buf, argc, argv, ' ');
+
+ memset(&ps, 0, sizeof(ps));
+ ret = do_push_stash(&ps, stash_msg, quiet, keep_index,
+ patch_mode, include_untracked);
+
+ strbuf_release(&stash_msg_buf);
+ return ret;
+}
+
+static int use_builtin_stash(void)
+{
+ struct child_process cp = CHILD_PROCESS_INIT;
+ struct strbuf out = STRBUF_INIT;
+ int ret, env = git_env_bool("GIT_TEST_STASH_USE_BUILTIN", -1);
+
+ if (env != -1)
+ return env;
+
+ argv_array_pushl(&cp.args,
+ "config", "--bool", "stash.usebuiltin", NULL);
+ cp.git_cmd = 1;
+ if (capture_command(&cp, &out, 6)) {
+ strbuf_release(&out);
+ return 1;
+ }
+
+ strbuf_trim(&out);
+ ret = !strcmp("true", out.buf);
+ strbuf_release(&out);
+ return ret;
+}
+
+int cmd_stash(int argc, const char **argv, const char *prefix)
+{
+ int i = -1;
+ pid_t pid = getpid();
+ const char *index_file;
+ struct argv_array args = ARGV_ARRAY_INIT;
+
+ struct option options[] = {
+ OPT_END()
+ };
+
+ if (!use_builtin_stash()) {
+ const char *path = mkpath("%s/git-legacy-stash",
+ git_exec_path());
+
+ if (sane_execvp(path, (char **)argv) < 0)
+ die_errno(_("could not exec %s"), path);
+ else
+ BUG("sane_execvp() returned???");
+ }
+
+ prefix = setup_git_directory();
+ trace_repo_setup(prefix);
+ setup_work_tree();
+
+ git_config(git_diff_basic_config, NULL);
+
+ argc = parse_options(argc, argv, prefix, options, git_stash_usage,
+ PARSE_OPT_KEEP_UNKNOWN | PARSE_OPT_KEEP_DASHDASH);
+
+ index_file = get_index_file();
+ strbuf_addf(&stash_index_path, "%s.stash.%" PRIuMAX, index_file,
+ (uintmax_t)pid);
+
+ if (!argc)
+ return !!push_stash(0, NULL, prefix);
+ else if (!strcmp(argv[0], "apply"))
+ return !!apply_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "clear"))
+ return !!clear_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "drop"))
+ return !!drop_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "pop"))
+ return !!pop_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "branch"))
+ return !!branch_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "list"))
+ return !!list_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "show"))
+ return !!show_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "store"))
+ return !!store_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "create"))
+ return !!create_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "push"))
+ return !!push_stash(argc, argv, prefix);
+ else if (!strcmp(argv[0], "save"))
+ return !!save_stash(argc, argv, prefix);
+ else if (*argv[0] != '-')
+ usage_msg_opt(xstrfmt(_("unknown subcommand: %s"), argv[0]),
+ git_stash_usage, options);
+
+ if (strcmp(argv[0], "-p")) {
+ while (++i < argc && strcmp(argv[i], "--")) {
+ /*
+ * `akpqu` is a string which contains all short options,
+ * except `-m` which is verified separately.
+ */
+ if ((strlen(argv[i]) == 2) && *argv[i] == '-' &&
+ strchr("akpqu", argv[i][1]))
+ continue;
+
+ if (!strcmp(argv[i], "--all") ||
+ !strcmp(argv[i], "--keep-index") ||
+ !strcmp(argv[i], "--no-keep-index") ||
+ !strcmp(argv[i], "--patch") ||
+ !strcmp(argv[i], "--quiet") ||
+ !strcmp(argv[i], "--include-untracked"))
+ continue;
+
+ /*
+ * `-m` and `--message=` are verified separately because
+ * they need to be immediately followed by a string
+ * (i.e.`-m"foobar"` or `--message="foobar"`).
+ */
+ if (starts_with(argv[i], "-m") ||
+ starts_with(argv[i], "--message="))
+ continue;
+
+ usage_with_options(git_stash_usage, options);
+ }
+ }
+
+ argv_array_push(&args, "push");
+ argv_array_pushv(&args, argv);
+ return !!push_stash(args.argc, args.argv, prefix);
+}