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-rw-r--r--builtin/checkout.c499
1 files changed, 326 insertions, 173 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 757f9a08dd..2a80772425 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>",
@@ -30,6 +31,7 @@ struct checkout_opts {
int quiet;
int merge;
int force;
+ int force_detach;
int writeout_stage;
int writeout_error;
@@ -70,7 +72,7 @@ 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;
@@ -78,7 +80,10 @@ static int update_some(const unsigned char *sha1, const char *base, int baselen,
static int read_tree_some(struct tree *tree, const char **pathspec)
{
- read_tree_recursive(tree, "", 0, 0, pathspec, update_some, NULL);
+ struct pathspec ps;
+ init_pathspec(&ps, pathspec);
+ read_tree_recursive(tree, "", 0, 0, &ps, update_some, NULL);
+ free_pathspec(&ps);
/* update the index with the given tree's info
* for all args, expanding wildcards, and exit
@@ -103,9 +108,10 @@ static int check_stage(int stage, struct cache_entry *ce, int pos)
return 0;
pos++;
}
- return error("path '%s' does not have %s version",
- ce->name,
- (stage == 2) ? "our" : "their");
+ 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_all_stages(struct cache_entry *ce, int pos)
@@ -116,7 +122,7 @@ static int check_all_stages(struct cache_entry *ce, int pos)
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",
+ return error(_("path '%s' does not have all three versions"),
ce->name);
return 0;
}
@@ -130,9 +136,10 @@ static int checkout_stage(int stage, struct cache_entry *ce, int pos,
return checkout_entry(active_cache[pos], state, NULL);
pos++;
}
- return error("path '%s' does not have %s version",
- ce->name,
- (stage == 2) ? "our" : "their");
+ 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)
@@ -150,7 +157,7 @@ static int checkout_merged(int pos, struct checkout *state)
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);
+ 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);
@@ -167,7 +174,7 @@ static int checkout_merged(int pos, struct checkout *state)
free(theirs.ptr);
if (status < 0 || !result_buf.ptr) {
free(result_buf.ptr);
- return error("path '%s': cannot merge", path);
+ return error(_("path '%s': cannot merge"), path);
}
/*
@@ -184,18 +191,18 @@ 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);
+ 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);
if (!ce)
- die("make_cache_entry failed for path '%s'", path);
+ die(_("make_cache_entry failed for path '%s'"), path);
status = checkout_entry(ce, state, NULL);
return status;
}
static int checkout_paths(struct tree *source_tree, const char **pathspec,
- struct checkout_opts *opts)
+ const char *prefix, struct checkout_opts *opts)
{
int pos;
struct checkout state;
@@ -211,7 +218,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
newfd = hold_locked_index(lock_file, 1);
if (read_cache_preload(pathspec) < 0)
- return error("corrupt index file");
+ return error(_("corrupt index file"));
if (source_tree)
read_tree_some(source_tree, pathspec);
@@ -222,10 +229,12 @@ 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);
}
- if (report_path_error(ps_matched, pathspec, 0))
+ if (report_path_error(ps_matched, pathspec, prefix))
return 1;
/* "checkout -m path" to recreate conflicted state */
@@ -239,14 +248,14 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
if (!ce_stage(ce))
continue;
if (opts->force) {
- warning("path '%s' is unmerged", ce->name);
+ warning(_("path '%s' is unmerged"), ce->name);
} else if (stage) {
errs |= check_stage(stage, ce, pos);
} else if (opts->merge) {
errs |= check_all_stages(ce, pos);
} else {
errs = 1;
- error("path '%s' is unmerged", ce->name);
+ error(_("path '%s' is unmerged"), ce->name);
}
pos = skip_same_name(ce, pos) - 1;
}
@@ -260,6 +269,8 @@ 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);
@@ -275,7 +286,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
if (write_cache(newfd, active_cache, active_nr) ||
commit_locked_index(lock_file))
- die("unable to write new index file");
+ die(_("unable to write new index file"));
resolve_ref("HEAD", rev, 0, &flag);
head = lookup_commit_reference_gently(rev, 1);
@@ -292,17 +303,16 @@ static void show_local_changes(struct object *head, struct diff_options *opts)
rev.diffopt.flags = opts->flags;
rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS;
if (diff_setup_done(&rev.diffopt) < 0)
- die("diff_setup_done failed");
+ die(_("diff_setup_done failed"));
add_pending_object(&rev, head, NULL);
run_diff_index(&rev, 0);
}
-static void describe_detached_head(char *msg, struct commit *commit)
+static void describe_detached_head(const char *msg, struct commit *commit)
{
struct strbuf sb = STRBUF_INIT;
- struct pretty_print_context ctx = {0};
parse_commit(commit);
- pretty_print_commit(CMIT_FMT_ONELINE, commit, &sb, &ctx);
+ 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);
@@ -366,7 +376,7 @@ static int merge_working_tree(struct checkout_opts *opts,
int newfd = hold_locked_index(lock_file, 1);
if (read_cache_preload(NULL) < 0)
- return error("corrupt index file");
+ return error(_("corrupt index file"));
resolve_undo_clear();
if (opts->force) {
@@ -388,7 +398,7 @@ static int merge_working_tree(struct checkout_opts *opts,
refresh_cache(REFRESH_QUIET);
if (unmerged_cache()) {
- error("you need to resolve your current index first");
+ error(_("you need to resolve your current index first"));
return 1;
}
@@ -404,7 +414,7 @@ static int merge_working_tree(struct checkout_opts *opts,
topts.dir->exclude_per_dir = ".gitignore";
tree = parse_tree_indirect(old->commit ?
old->commit->object.sha1 :
- (unsigned char *)EMPTY_TREE_SHA1_BIN);
+ 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);
@@ -470,7 +480,7 @@ static int merge_working_tree(struct checkout_opts *opts,
if (write_cache(newfd, active_cache, active_nr) ||
commit_locked_index(lock_file))
- die("unable to write new index file");
+ die(_("unable to write new index file"));
if (!opts->force && !opts->quiet)
show_local_changes(&new->commit->object, &opts->diff_options);
@@ -519,7 +529,7 @@ static void update_refs_for_switch(struct checkout_opts *opts,
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",
+ fprintf(stderr, _("Can not do reflog for '%s'\n"),
opts->new_orphan_branch);
log_all_ref_updates = temp;
return;
@@ -541,19 +551,31 @@ static void update_refs_for_switch(struct checkout_opts *opts,
strbuf_addf(&msg, "checkout: moving from %s to %s",
old_desc ? old_desc : "(invalid)", new->name);
- if (new->path) {
+ 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, DIE_ON_ERR);
+ if (!opts->quiet) {
+ if (old->path && advice_detached_head)
+ detach_advice(old->path, 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))
- fprintf(stderr, "Already on '%s'\n",
- new->name);
- else if (opts->new_branch)
- fprintf(stderr, "Switched to%s branch '%s'\n",
- opts->branch_exists ? " and reset" : " a new",
+ if (old->path && !strcmp(new->path, old->path)) {
+ fprintf(stderr, _("Already on '%s'\n"),
new->name);
- else
- fprintf(stderr, "Switched to branch '%s'\n",
+ } 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) {
char log_file[PATH_MAX], ref_file[PATH_MAX];
@@ -563,21 +585,113 @@ static void update_refs_for_switch(struct checkout_opts *opts,
if (!file_exists(ref_file) && file_exists(log_file))
remove_path(log_file);
}
- } else if (strcmp(new->name, "HEAD")) {
- update_ref(msg.buf, "HEAD", new->commit->object.sha1, NULL,
- REF_NODEREF, DIE_ON_ERR);
- if (!opts->quiet) {
- if (old->path && advice_detached_head)
- detach_advice(old->path, new->name);
- describe_detached_head("HEAD is now at", new->commit);
- }
}
remove_branch_state();
strbuf_release(&msg);
- if (!opts->quiet && (new->path || !strcmp(new->name, "HEAD")))
+ 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, flags | UNINTERESTING);
+ return 0;
+}
+
+static void describe_one_orphan(struct strbuf *sb, struct commit *commit)
+{
+ parse_commit(commit);
+ strbuf_addstr(sb, " ");
+ strbuf_addstr(sb,
+ find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV));
+ strbuf_addch(sb, ' ');
+ 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"),
+ sha1_to_hex(commit->object.sha1));
+}
+
+/*
+ * 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 *commit)
+{
+ struct rev_info revs;
+ struct object *object = &commit->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);
+
+ refs = revs.pending;
+ revs.leak_pending = 1;
+
+ if (prepare_revision_walk(&revs))
+ die(_("internal error in revision walk"));
+ if (!(commit->object.flags & UNINTERESTING))
+ suggest_reattach(commit, &revs);
+ else
+ describe_detached_head(_("Previous HEAD position was"), commit);
+
+ 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;
@@ -585,10 +699,12 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
unsigned char rev[20];
int flag;
memset(&old, 0, sizeof(old));
- old.path = resolve_ref("HEAD", rev, 0, &flag);
+ old.path = xstrdup(resolve_ref("HEAD", rev, 0, &flag));
old.commit = lookup_commit_reference_gently(rev, 1);
- if (!(flag & REF_ISSYMREF))
+ if (!(flag & REF_ISSYMREF)) {
+ free((char *)old.path);
old.path = NULL;
+ }
if (old.path && !prefixcmp(old.path, "refs/heads/"))
old.name = old.path + strlen("refs/heads/");
@@ -597,7 +713,7 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
new->name = "HEAD";
new->commit = old.commit;
if (!new->commit)
- die("You are on a branch yet to be born");
+ die(_("You are on a branch yet to be born"));
parse_commit(new->commit);
}
@@ -605,17 +721,13 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
if (ret)
return ret;
- /*
- * If we were on a detached HEAD, but have now moved to
- * a new commit, we want to mention the old commit once more
- * to remind the user that it might be lost.
- */
if (!opts->quiet && !old.path && old.commit && new->commit != old.commit)
- describe_detached_head("Previous HEAD position was", old.commit);
+ orphaned_commit_warning(old.commit);
update_refs_for_switch(opts, &old, new);
ret = post_checkout_hook(old.commit, new->commit, 1);
+ free((char *)old.path);
return ret || opts->writeout_error;
}
@@ -675,11 +787,123 @@ static const char *unique_tracking_name(const char *name)
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 has_dash_dash;
+
+ /*
+ * 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> [<paths>]
+ *
+ * With no paths, 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.
+ *
+ * With no paths, if <something> is _not_ a commit, no -t nor -b
+ * was given, 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.
+ *
+ * Otherwise <something> shall 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;
+
+ if (!strcmp(argv[0], "--")) /* case (2) */
+ return 1;
+
+ arg = argv[0];
+ has_dash_dash = (argc > 1) && !strcmp(argv[1], "--");
+
+ if (!strcmp(arg, "-"))
+ arg = "@{-1}";
+
+ if (get_sha1_mb(arg, rev)) {
+ if (has_dash_dash) /* case (1) */
+ die(_("invalid reference: %s"), arg);
+ if (dwim_new_local_branch_ok &&
+ !check_filename(NULL, arg) &&
+ argc == 1) {
+ const char *remote = unique_tracking_name(arg);
+ if (!remote || get_sha1(remote, rev))
+ return argcount;
+ *new_branch = arg;
+ arg = remote;
+ /* DWIMmed to create local branch */
+ } else {
+ 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) &&
+ resolve_ref(new->path, branch_rev, 1, NULL))
+ 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(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 -> 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;
+}
+
int cmd_checkout(int argc, const char **argv, const char *prefix)
{
struct checkout_opts opts;
unsigned char rev[20];
- const char *arg;
struct branch_info new;
struct tree *source_tree = NULL;
char *conflict_style = NULL;
@@ -692,6 +916,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
OPT_STRING('B', NULL, &opts.new_branch_force, "branch",
"create/reset and checkout a branch"),
OPT_BOOLEAN('l', NULL, &opts.new_branch_log, "create reflog for new branch"),
+ OPT_BOOLEAN(0, "detach", &opts.force_detach, "detach the HEAD at named commit"),
OPT_SET_INT('t', "track", &opts.track, "set upstream info for new branch",
BRANCH_TRACK_EXPLICIT),
OPT_STRING(0, "orphan", &opts.new_orphan_branch, "new branch", "new unparented branch"),
@@ -709,7 +934,6 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
PARSE_OPT_NOARG | PARSE_OPT_HIDDEN },
OPT_END(),
};
- int has_dash_dash;
memset(&opts, 0, sizeof(opts));
memset(&new, 0, sizeof(new));
@@ -724,36 +948,42 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
/* we can assume from now on new_branch = !new_branch_force */
if (opts.new_branch && opts.new_branch_force)
- die("-B cannot be used with -b");
+ die(_("-B cannot be used with -b"));
/* copy -B over to -b, so that we can just check the latter */
if (opts.new_branch_force)
opts.new_branch = opts.new_branch_force;
if (patch_mode && (opts.track > 0 || opts.new_branch
- || opts.new_branch_log || opts.merge || opts.force))
- die ("--patch is incompatible with all other options");
+ || opts.new_branch_log || opts.merge || opts.force
+ || opts.force_detach))
+ die (_("--patch is incompatible with all other options"));
+
+ if (opts.force_detach && (opts.new_branch || opts.new_orphan_branch))
+ die(_("--detach cannot be used with -b/-B/--orphan"));
+ if (opts.force_detach && 0 < opts.track)
+ die(_("--detach cannot be used with -t"));
/* --track without -b should DWIM */
if (0 < opts.track && !opts.new_branch) {
const char *argv0 = argv[0];
if (!argc || !strcmp(argv0, "--"))
- die ("--track needs a branch name");
+ die (_("--track needs a branch name"));
if (!prefixcmp(argv0, "refs/"))
argv0 += 5;
if (!prefixcmp(argv0, "remotes/"))
argv0 += 8;
argv0 = strchr(argv0, '/');
if (!argv0 || !argv0[1])
- die ("Missing branch name; try -b");
+ die (_("Missing branch name; try -b"));
opts.new_branch = argv0 + 1;
}
if (opts.new_orphan_branch) {
if (opts.new_branch)
- die("--orphan and -b|-B are mutually exclusive");
+ die(_("--orphan and -b|-B are mutually exclusive"));
if (opts.track > 0)
- die("--orphan cannot be used with -t");
+ die(_("--orphan cannot be used with -t"));
opts.new_branch = opts.new_orphan_branch;
}
@@ -763,108 +993,33 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
}
if (opts.force && opts.merge)
- die("git checkout: -f and -m are incompatible");
+ die(_("git checkout: -f and -m are incompatible"));
/*
- * case 1: git checkout <ref> -- [<paths>]
+ * Extract branch name from command line arguments, so
+ * all that is left is pathspecs.
*
- * <ref> must be a valid tree, everything after the '--' must be
- * a path.
+ * Handle
*
- * case 2: git checkout -- [<paths>]
- *
- * everything after the '--' must be paths.
- *
- * case 3: git checkout <something> [<paths>]
- *
- * With no paths, 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.
- *
- * With no paths, if <something> is _not_ a commit, no -t nor -b
- * was given, and there is a remote-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.
- *
- * Otherwise <something> shall 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.
+ * 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) {
- if (!strcmp(argv[0], "--")) { /* case (2) */
- argv++;
- argc--;
- goto no_reference;
- }
-
- arg = argv[0];
- has_dash_dash = (argc > 1) && !strcmp(argv[1], "--");
-
- if (!strcmp(arg, "-"))
- arg = "@{-1}";
-
- if (get_sha1_mb(arg, rev)) {
- if (has_dash_dash) /* case (1) */
- die("invalid reference: %s", arg);
- if (!patch_mode &&
- dwim_new_local_branch &&
- opts.track == BRANCH_TRACK_UNSPECIFIED &&
- !opts.new_branch &&
- !check_filename(NULL, arg) &&
- argc == 1) {
- const char *remote = unique_tracking_name(arg);
- if (!remote || get_sha1(remote, rev))
- goto no_reference;
- opts.new_branch = arg;
- arg = remote;
- /* DWIMmed to create local branch */
- }
- else
- goto no_reference;
- }
-
- /* we can't end up being in (2) anymore, eat the argument */
- argv++;
- argc--;
-
- new.name = arg;
- if ((new.commit = lookup_commit_reference_gently(rev, 1))) {
- setup_branch_path(&new);
-
- if ((check_ref_format(new.path) == CHECK_REF_FORMAT_OK) &&
- resolve_ref(new.path, rev, 1, NULL))
- ;
- else
- new.path = NULL;
- parse_commit(new.commit);
- source_tree = new.commit->tree;
- } else
- source_tree = parse_tree_indirect(rev);
-
- if (!source_tree) /* case (1): want a tree */
- die("reference is not a tree: %s", arg);
- if (!has_dash_dash) {/* case (3 -> 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 {
- argv++;
- argc--;
- }
+ int dwim_ok =
+ !patch_mode &&
+ dwim_new_local_branch &&
+ opts.track == BRANCH_TRACK_UNSPECIFIED &&
+ !opts.new_branch;
+ int n = parse_branchname_arg(argc, argv, dwim_ok,
+ &new, &source_tree, rev, &opts.new_branch);
+ argv += n;
+ argc -= n;
}
-no_reference:
-
if (opts.track == BRANCH_TRACK_UNSPECIFIED)
opts.track = git_branch_track;
@@ -872,7 +1027,7 @@ no_reference:
const char **pathspec = get_pathspec(prefix, argv);
if (!pathspec)
- die("invalid path specification");
+ die(_("invalid path specification"));
if (patch_mode)
return interactive_checkout(new.name, pathspec, &opts);
@@ -880,16 +1035,19 @@ no_reference:
/* Checkout paths */
if (opts.new_branch) {
if (argc == 1) {
- die("git checkout: updating paths is incompatible with switching branches.\nDid you intend to checkout '%s' which can not be resolved as commit?", argv[0]);
+ die(_("git checkout: updating paths is incompatible with switching branches.\nDid you intend to checkout '%s' which can not be resolved as commit?"), argv[0]);
} else {
- die("git checkout: updating paths is incompatible with switching branches.");
+ die(_("git checkout: updating paths is incompatible with switching branches."));
}
}
+ if (opts.force_detach)
+ die(_("git checkout: --detach does not take a path argument"));
+
if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge)
- die("git checkout: --ours/--theirs, --force and --merge are incompatible when\nchecking out of the index.");
+ die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\nchecking out of the index."));
- return checkout_paths(source_tree, pathspec, &opts);
+ return checkout_paths(source_tree, pathspec, prefix, &opts);
}
if (patch_mode)
@@ -897,23 +1055,18 @@ no_reference:
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 (!get_sha1(buf.buf, rev)) {
- 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, 0);
+
strbuf_release(&buf);
}
if (new.name && !new.commit) {
- die("Cannot switch branch to a non-commit.");
+ die(_("Cannot switch branch to a non-commit."));
}
if (opts.writeout_stage)
- die("--ours/--theirs is incompatible with switching branches.");
+ die(_("--ours/--theirs is incompatible with switching branches."));
return switch_branches(&opts, &new);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 18:10:13 +0000