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Diffstat (limited to 'builtin/checkout.c')
-rw-r--r--builtin/checkout.c206
1 files changed, 105 insertions, 101 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c
index b76e2c0..a76aa2a 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -19,6 +19,7 @@
#include "ll-merge.h"
#include "resolve-undo.h"
#include "submodule.h"
+#include "argv-array.h"
static const char * const checkout_usage[] = {
"git checkout [options] <branch>",
@@ -33,6 +34,7 @@ struct checkout_opts {
int force_detach;
int writeout_stage;
int writeout_error;
+ int overwrite_ignore;
/* not set by parse_options */
int branch_exists;
@@ -71,7 +73,7 @@ static int update_some(const unsigned char *sha1, const char *base, int baselen,
hashcpy(ce->sha1, sha1);
memcpy(ce->name, base, baselen);
memcpy(ce->name + baselen, pathname, len - baselen);
- ce->ce_flags = create_ce_flags(len, 0);
+ ce->ce_flags = create_ce_flags(len, 0) | CE_UPDATE;
ce->ce_mode = create_ce_mode(mode);
add_cache_entry(ce, ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE);
return 0;
@@ -113,16 +115,21 @@ static int check_stage(int stage, struct cache_entry *ce, int pos)
return error(_("path '%s' does not have their version"), ce->name);
}
-static int check_all_stages(struct cache_entry *ce, int pos)
+static int check_stages(unsigned stages, struct cache_entry *ce, int pos)
{
- if (ce_stage(ce) != 1 ||
- active_nr <= pos + 2 ||
- strcmp(active_cache[pos+1]->name, ce->name) ||
- ce_stage(active_cache[pos+1]) != 2 ||
- strcmp(active_cache[pos+2]->name, ce->name) ||
- ce_stage(active_cache[pos+2]) != 3)
- return error(_("path '%s' does not have all three versions"),
- ce->name);
+ 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;
}
@@ -149,18 +156,27 @@ static int checkout_merged(int pos, struct checkout *state)
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);
- if (ce_stage(ce) != 1 ||
- active_nr <= pos + 2 ||
- strcmp(active_cache[pos+1]->name, path) ||
- ce_stage(active_cache[pos+1]) != 2 ||
- strcmp(active_cache[pos+2]->name, path) ||
- ce_stage(active_cache[pos+2]) != 3)
- return error(_("path '%s' does not have all 3 versions"), path);
-
- read_mmblob(&ancestor, active_cache[pos]->sha1);
- read_mmblob(&ours, active_cache[pos+1]->sha1);
- read_mmblob(&theirs, active_cache[pos+2]->sha1);
+ read_mmblob(&ancestor, threeway[0]);
+ read_mmblob(&ours, threeway[1]);
+ read_mmblob(&theirs, threeway[2]);
/*
* NEEDSWORK: re-create conflicts from merges with
@@ -191,9 +207,7 @@ static int checkout_merged(int pos, struct checkout *state)
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(create_ce_mode(active_cache[pos+1]->ce_mode),
- sha1,
- path, 2, 0);
+ 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);
@@ -228,6 +242,8 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
for (pos = 0; pos < active_nr; pos++) {
struct cache_entry *ce = active_cache[pos];
+ if (source_tree && !(ce->ce_flags & CE_UPDATE))
+ continue;
match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, ps_matched);
}
@@ -249,7 +265,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
} else if (stage) {
errs |= check_stage(stage, ce, pos);
} else if (opts->merge) {
- errs |= check_all_stages(ce, pos);
+ errs |= check_stages((1<<2) | (1<<3), ce, pos);
} else {
errs = 1;
error(_("path '%s' is unmerged"), ce->name);
@@ -266,6 +282,8 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
state.refresh_cache = 1;
for (pos = 0; pos < active_nr; pos++) {
struct cache_entry *ce = active_cache[pos];
+ if (source_tree && !(ce->ce_flags & CE_UPDATE))
+ continue;
if (match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, NULL)) {
if (!ce_stage(ce)) {
errs |= checkout_entry(ce, &state, NULL);
@@ -283,7 +301,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
commit_locked_index(lock_file))
die(_("unable to write new index file"));
- resolve_ref("HEAD", rev, 0, &flag);
+ read_ref_full("HEAD", rev, 0, &flag);
head = lookup_commit_reference_gently(rev, 1);
errs |= post_checkout_hook(head, head, 0);
@@ -404,9 +422,11 @@ static int merge_working_tree(struct checkout_opts *opts,
topts.gently = opts->merge && old->commit;
topts.verbose_update = !opts->quiet;
topts.fn = twoway_merge;
- topts.dir = xcalloc(1, sizeof(*topts.dir));
- topts.dir->flags |= DIR_SHOW_IGNORED;
- topts.dir->exclude_per_dir = ".gitignore";
+ 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);
@@ -535,7 +555,9 @@ static void update_refs_for_switch(struct checkout_opts *opts,
else
create_branch(old->name, opts->new_branch, new->name,
opts->new_branch_force ? 1 : 0,
- opts->new_branch_log, opts->track);
+ opts->new_branch_log,
+ opts->new_branch_force ? 1 : 0,
+ opts->track);
new->name = opts->new_branch;
setup_branch_path(new);
}
@@ -560,8 +582,12 @@ static void update_refs_for_switch(struct checkout_opts *opts,
create_symref("HEAD", new->path, msg.buf);
if (!opts->quiet) {
if (old->path && !strcmp(new->path, old->path)) {
- fprintf(stderr, _("Already on '%s'\n"),
- new->name);
+ 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);
@@ -588,35 +614,11 @@ static void update_refs_for_switch(struct checkout_opts *opts,
report_tracking(new);
}
-struct rev_list_args {
- int argc;
- int alloc;
- const char **argv;
-};
-
-static void add_one_rev_list_arg(struct rev_list_args *args, const char *s)
+static int add_pending_uninteresting_ref(const char *refname,
+ const unsigned char *sha1,
+ int flags, void *cb_data)
{
- ALLOC_GROW(args->argv, args->argc + 1, args->alloc);
- args->argv[args->argc++] = s;
-}
-
-static int add_one_ref_to_rev_list_arg(const char *refname,
- const unsigned char *sha1,
- int flags,
- void *cb_data)
-{
- add_one_rev_list_arg(cb_data, refname);
- return 0;
-}
-
-static int clear_commit_marks_from_one_ref(const char *refname,
- const unsigned char *sha1,
- int flags,
- void *cb_data)
-{
- struct commit *commit = lookup_commit_reference_gently(sha1, 1);
- if (commit)
- clear_commit_marks(commit, -1);
+ add_pending_sha1(cb_data, refname, sha1, flags | UNINTERESTING);
return 0;
}
@@ -657,24 +659,25 @@ static void suggest_reattach(struct commit *commit, struct rev_info *revs)
"Warning: you are leaving %d commit behind, "
"not connected to\n"
"any of your branches:\n\n"
- "%s\n"
- "If you want to keep it 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",
+ "%s\n",
/* The plural version */
"Warning: you are leaving %d commits behind, "
"not connected to\n"
"any of your branches:\n\n"
- "%s\n"
- "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",
+ "%s\n",
/* Give ngettext() the count */
lost),
lost,
- sb.buf,
- sha1_to_hex(commit->object.sha1));
+ 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"),
+ sha1_to_hex(commit->object.sha1));
}
/*
@@ -684,19 +687,21 @@ static void suggest_reattach(struct commit *commit, struct rev_info *revs)
*/
static void orphaned_commit_warning(struct commit *commit)
{
- struct rev_list_args args = { 0, 0, NULL };
struct rev_info revs;
-
- add_one_rev_list_arg(&args, "(internal)");
- add_one_rev_list_arg(&args, sha1_to_hex(commit->object.sha1));
- add_one_rev_list_arg(&args, "--not");
- for_each_ref(add_one_ref_to_rev_list_arg, &args);
- add_one_rev_list_arg(&args, "--");
- add_one_rev_list_arg(&args, NULL);
+ struct object *object = &commit->object;
+ struct object_array refs;
init_revisions(&revs, NULL);
- if (setup_revisions(args.argc - 1, args.argv, &revs, NULL) != 1)
- die(_("internal error: only -- alone should have been left"));
+ 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);
+
+ refs = revs.pending;
+ revs.leak_pending = 1;
+
if (prepare_revision_walk(&revs))
die(_("internal error in revision walk"));
if (!(commit->object.flags & UNINTERESTING))
@@ -704,23 +709,22 @@ static void orphaned_commit_warning(struct commit *commit)
else
describe_detached_head(_("Previous HEAD position was"), commit);
- clear_commit_marks(commit, -1);
- for_each_ref(clear_commit_marks_from_one_ref, NULL);
+ clear_commit_marks_for_object_array(&refs, ALL_REV_FLAGS);
+ free(refs.objects);
}
static int switch_branches(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;
memset(&old, 0, sizeof(old));
- old.path = xstrdup(resolve_ref("HEAD", rev, 0, &flag));
+ old.path = path_to_free = resolve_refdup("HEAD", rev, 0, &flag);
old.commit = lookup_commit_reference_gently(rev, 1);
- if (!(flag & REF_ISSYMREF)) {
- free((char *)old.path);
+ if (!(flag & REF_ISSYMREF))
old.path = NULL;
- }
if (old.path && !prefixcmp(old.path, "refs/heads/"))
old.name = old.path + strlen("refs/heads/");
@@ -734,8 +738,10 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
}
ret = merge_working_tree(opts, &old, new);
- if (ret)
+ if (ret) {
+ free(path_to_free);
return ret;
+ }
if (!opts->quiet && !old.path && old.commit && new->commit != old.commit)
orphaned_commit_warning(old.commit);
@@ -743,7 +749,7 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
update_refs_for_switch(opts, &old, new);
ret = post_checkout_hook(old.commit, new->commit, 1);
- free((char *)old.path);
+ free(path_to_free);
return ret || opts->writeout_error;
}
@@ -881,8 +887,8 @@ static int parse_branchname_arg(int argc, const char **argv,
new->name = arg;
setup_branch_path(new);
- if (check_ref_format(new->path) == CHECK_REF_FORMAT_OK &&
- resolve_ref(new->path, branch_rev, 1, NULL))
+ 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 */
@@ -953,6 +959,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
3),
OPT__FORCE(&opts.force, "force checkout (throw away local modifications)"),
OPT_BOOLEAN('m', "merge", &opts.merge, "perform a 3-way merge with the new branch"),
+ OPT_BOOLEAN(0, "overwrite-ignore", &opts.overwrite_ignore, "update ignored files (default)"),
OPT_STRING(0, "conflict", &conflict_style, "style",
"conflict style (merge or diff3)"),
OPT_BOOLEAN('p', "patch", &patch_mode, "select hunks interactively"),
@@ -964,6 +971,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
memset(&opts, 0, sizeof(opts));
memset(&new, 0, sizeof(new));
+ opts.overwrite_ignore = 1;
gitmodules_config();
git_config(git_checkout_config, &opts);
@@ -1082,15 +1090,11 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
if (opts.new_branch) {
struct strbuf buf = STRBUF_INIT;
- if (strbuf_check_branch_ref(&buf, opts.new_branch))
- die(_("git checkout: we do not like '%s' as a branch name."),
- opts.new_branch);
- if (ref_exists(buf.buf)) {
- opts.branch_exists = 1;
- if (!opts.new_branch_force)
- die(_("git checkout: branch %s already exists"),
- opts.new_branch);
- }
+
+ opts.branch_exists = validate_new_branchname(opts.new_branch, &buf,
+ !!opts.new_branch_force,
+ !!opts.new_branch_force);
+
strbuf_release(&buf);
}
@@ -1104,8 +1108,8 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
unsigned char rev[20];
int flag;
- resolve_ref("HEAD", rev, 0, &flag);
- if ((flag & REF_ISSYMREF) && is_null_sha1(rev))
+ if (!read_ref_full("HEAD", rev, 0, &flag) &&
+ (flag & REF_ISSYMREF) && is_null_sha1(rev))
return switch_unborn_to_new_branch(&opts);
}
return switch_branches(&opts, &new);