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-rw-r--r--builtin/checkout.c1131
1 files changed, 740 insertions, 391 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c
index ffa776c6e1..9b82119129 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1,32 +1,31 @@
#define USE_THE_INDEX_COMPATIBILITY_MACROS
#include "builtin.h"
-#include "config.h"
+#include "advice.h"
+#include "blob.h"
+#include "branch.h"
+#include "cache-tree.h"
#include "checkout.h"
+#include "commit.h"
+#include "config.h"
+#include "diff.h"
+#include "dir.h"
+#include "ll-merge.h"
#include "lockfile.h"
+#include "merge-recursive.h"
+#include "object-store.h"
#include "parse-options.h"
#include "refs.h"
-#include "object-store.h"
-#include "commit.h"
+#include "remote.h"
+#include "resolve-undo.h"
+#include "revision.h"
+#include "run-command.h"
+#include "submodule.h"
+#include "submodule-config.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 "wt-status.h"
#include "xdiff-interface.h"
-#include "ll-merge.h"
-#include "resolve-undo.h"
-#include "submodule-config.h"
-#include "submodule.h"
-#include "advice.h"
-
-static int checkout_optimize_new_branch;
static const char * const checkout_usage[] = {
N_("git checkout [<options>] <branch>"),
@@ -34,12 +33,23 @@ static const char * const checkout_usage[] = {
NULL,
};
+static const char * const switch_branch_usage[] = {
+ N_("git switch [<options>] [<branch>]"),
+ NULL,
+};
+
+static const char * const restore_usage[] = {
+ N_("git restore [<options>] [--source=<branch>] <file>..."),
+ NULL,
+};
+
struct checkout_opts {
int patch_mode;
int quiet;
int merge;
int force;
int force_detach;
+ int implicit_detach;
int writeout_stage;
int overwrite_ignore;
int ignore_skipworktree;
@@ -47,10 +57,21 @@ struct checkout_opts {
int show_progress;
int count_checkout_paths;
int overlay_mode;
- /*
- * If new checkout options are added, skip_merge_working_tree
- * should be updated accordingly.
- */
+ int dwim_new_local_branch;
+ int discard_changes;
+ int accept_ref;
+ int accept_pathspec;
+ int switch_branch_doing_nothing_is_ok;
+ int only_merge_on_switching_branches;
+ int can_switch_when_in_progress;
+ int orphan_from_empty_tree;
+ int empty_pathspec_ok;
+ int checkout_index;
+ int checkout_worktree;
+ const char *ignore_unmerged_opt;
+ int ignore_unmerged;
+ int pathspec_file_nul;
+ const char *pathspec_from_file;
const char *new_branch;
const char *new_branch_force;
@@ -58,13 +79,28 @@ struct checkout_opts {
int new_branch_log;
enum branch_track track;
struct diff_options diff_options;
+ char *conflict_style;
int branch_exists;
const char *prefix;
struct pathspec pathspec;
+ const char *from_treeish;
struct tree *source_tree;
};
+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 */
+ char *refname; /* The full name of the ref being checked out. */
+ struct object_id oid; /* The object ID of the commit being checked out. */
+ /*
+ * if not null the branch is detached because it's already
+ * checked out in this checkout
+ */
+ char *checkout;
+};
+
static int post_checkout_hook(struct commit *old_commit, struct commit *new_commit,
int changed)
{
@@ -105,6 +141,7 @@ static int update_some(const struct object_id *oid, struct strbuf *base,
if (pos >= 0) {
struct cache_entry *old = active_cache[pos];
if (ce->ce_mode == old->ce_mode &&
+ !ce_intent_to_add(old) &&
oideq(&ce->oid, &old->oid)) {
old->ce_flags |= CE_UPDATE;
discard_cache_entry(ce);
@@ -202,6 +239,8 @@ static int checkout_merged(int pos, const struct checkout *state, int *nr_checko
mmbuffer_t result_buf;
struct object_id threeway[3];
unsigned mode = 0;
+ struct ll_merge_options ll_opts;
+ int renormalize = 0;
memset(threeway, 0, sizeof(threeway));
while (pos < active_nr) {
@@ -222,13 +261,12 @@ static int checkout_merged(int pos, const struct checkout *state, int *nr_checko
read_mmblob(&ours, &threeway[1]);
read_mmblob(&theirs, &threeway[2]);
- /*
- * NEEDSWORK: re-create conflicts from merges with
- * merge.renormalize set, too
- */
+ memset(&ll_opts, 0, sizeof(ll_opts));
+ git_config_get_bool("merge.renormalize", &renormalize);
+ ll_opts.renormalize = renormalize;
status = ll_merge(&result_buf, path, &ancestor, "base",
&ours, "ours", &theirs, "theirs",
- state->istate, NULL);
+ state->istate, &ll_opts);
free(ancestor.ptr);
free(ours.ptr);
free(theirs.ptr);
@@ -313,17 +351,79 @@ static void mark_ce_for_checkout_no_overlay(struct cache_entry *ce,
}
}
+static int checkout_worktree(const struct checkout_opts *opts,
+ const struct branch_info *info)
+{
+ struct checkout state = CHECKOUT_INIT;
+ int nr_checkouts = 0, nr_unmerged = 0;
+ int errs = 0;
+ int pos;
+
+ state.force = 1;
+ state.refresh_cache = 1;
+ state.istate = &the_index;
+
+ init_checkout_metadata(&state.meta, info->refname,
+ info->commit ? &info->commit->object.oid : &info->oid,
+ NULL);
+
+ enable_delayed_checkout(&state);
+ 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, &nr_checkouts);
+ continue;
+ }
+ if (opts->writeout_stage)
+ errs |= checkout_stage(opts->writeout_stage,
+ ce, pos,
+ &state,
+ &nr_checkouts, opts->overlay_mode);
+ else if (opts->merge)
+ errs |= checkout_merged(pos, &state,
+ &nr_unmerged);
+ pos = skip_same_name(ce, pos) - 1;
+ }
+ }
+ remove_marked_cache_entries(&the_index, 1);
+ remove_scheduled_dirs();
+ errs |= finish_delayed_checkout(&state, &nr_checkouts);
+
+ if (opts->count_checkout_paths) {
+ if (nr_unmerged)
+ fprintf_ln(stderr, Q_("Recreated %d merge conflict",
+ "Recreated %d merge conflicts",
+ nr_unmerged),
+ nr_unmerged);
+ if (opts->source_tree)
+ fprintf_ln(stderr, Q_("Updated %d path from %s",
+ "Updated %d paths from %s",
+ nr_checkouts),
+ nr_checkouts,
+ find_unique_abbrev(&opts->source_tree->object.oid,
+ DEFAULT_ABBREV));
+ else if (!nr_unmerged || nr_checkouts)
+ fprintf_ln(stderr, Q_("Updated %d path from the index",
+ "Updated %d paths from the index",
+ nr_checkouts),
+ nr_checkouts);
+ }
+
+ return errs;
+}
+
static int checkout_paths(const struct checkout_opts *opts,
- const char *revision)
+ const struct branch_info *new_branch_info)
{
int pos;
- struct checkout state = CHECKOUT_INIT;
static char *ps_matched;
struct object_id rev;
struct commit *head;
int errs = 0;
struct lock_file lock_file = LOCK_INIT;
- int nr_checkouts = 0, nr_unmerged = 0;
+ int checkout_index;
trace2_cmd_mode(opts->patch_mode ? "patch" : "path");
@@ -333,8 +433,9 @@ static int checkout_paths(const struct checkout_opts *opts,
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->ignore_unmerged && opts->patch_mode)
+ die(_("'%s' cannot be used with updating paths"),
+ opts->ignore_unmerged_opt);
if (opts->force_detach)
die(_("'%s' cannot be used with updating paths"), "--detach");
@@ -342,16 +443,59 @@ static int checkout_paths(const struct checkout_opts *opts,
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->ignore_unmerged && opts->merge)
+ die(_("'%s' cannot be used with %s"),
+ opts->ignore_unmerged_opt, "-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);
+ if (!opts->checkout_worktree && !opts->checkout_index)
+ die(_("neither '%s' or '%s' is specified"),
+ "--staged", "--worktree");
+
+ if (!opts->checkout_worktree && !opts->from_treeish)
+ die(_("'%s' must be used when '%s' is not specified"),
+ "--worktree", "--source");
+
+ if (opts->checkout_index && !opts->checkout_worktree &&
+ opts->writeout_stage)
+ die(_("'%s' or '%s' cannot be used with %s"),
+ "--ours", "--theirs", "--staged");
+
+ if (opts->checkout_index && !opts->checkout_worktree &&
+ opts->merge)
+ die(_("'%s' or '%s' cannot be used with %s"),
+ "--merge", "--conflict", "--staged");
+
+ if (opts->patch_mode) {
+ const char *patch_mode;
+ const char *rev = new_branch_info->name;
+ char rev_oid[GIT_MAX_HEXSZ + 1];
+
+ /*
+ * Since rev can be in the form of `<a>...<b>` (which is not
+ * recognized by diff-index), we will always replace the name
+ * with the hex of the commit (whether it's in `...` form or
+ * not) for the run_add_interactive() machinery to work
+ * properly. However, there is special logic for the HEAD case
+ * so we mustn't replace that.
+ */
+ if (rev && strcmp(rev, "HEAD"))
+ rev = oid_to_hex_r(rev_oid, &new_branch_info->commit->object.oid);
+
+ if (opts->checkout_index && opts->checkout_worktree)
+ patch_mode = "--patch=checkout";
+ else if (opts->checkout_index && !opts->checkout_worktree)
+ patch_mode = "--patch=reset";
+ else if (!opts->checkout_index && opts->checkout_worktree)
+ patch_mode = "--patch=worktree";
+ else
+ BUG("either flag must have been set, worktree=%d, index=%d",
+ opts->checkout_worktree, opts->checkout_index);
+ return run_add_interactive(rev, patch_mode, &opts->pathspec);
+ }
repo_hold_locked_index(the_repository, &lock_file, LOCK_DIE_ON_ERROR);
if (read_cache_preload(&opts->pathspec) < 0)
@@ -392,8 +536,9 @@ static int checkout_paths(const struct checkout_opts *opts,
if (ce->ce_flags & CE_MATCHED) {
if (!ce_stage(ce))
continue;
- if (opts->force) {
- warning(_("path '%s' is unmerged"), ce->name);
+ if (opts->ignore_unmerged) {
+ if (!opts->quiet)
+ warning(_("path '%s' is unmerged"), ce->name);
} else if (opts->writeout_stage) {
errs |= check_stage(opts->writeout_stage, ce, pos, opts->overlay_mode);
} else if (opts->merge) {
@@ -409,57 +554,33 @@ static int checkout_paths(const struct checkout_opts *opts,
return 1;
/* Now we are committed to check them out */
- state.force = 1;
- state.refresh_cache = 1;
- state.istate = &the_index;
+ if (opts->checkout_worktree)
+ errs |= checkout_worktree(opts, new_branch_info);
+ else
+ remove_marked_cache_entries(&the_index, 1);
- enable_delayed_checkout(&state);
- 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, &nr_checkouts);
- continue;
- }
- if (opts->writeout_stage)
- errs |= checkout_stage(opts->writeout_stage,
- ce, pos,
- &state,
- &nr_checkouts, opts->overlay_mode);
- else if (opts->merge)
- errs |= checkout_merged(pos, &state,
- &nr_unmerged);
- pos = skip_same_name(ce, pos) - 1;
- }
- }
- remove_marked_cache_entries(&the_index, 1);
- remove_scheduled_dirs();
- errs |= finish_delayed_checkout(&state, &nr_checkouts);
+ /*
+ * Allow updating the index when checking out from the index.
+ * This is to save new stat info.
+ */
+ if (opts->checkout_worktree && !opts->checkout_index && !opts->source_tree)
+ checkout_index = 1;
+ else
+ checkout_index = opts->checkout_index;
- if (opts->count_checkout_paths) {
- if (nr_unmerged)
- fprintf_ln(stderr, Q_("Recreated %d merge conflict",
- "Recreated %d merge conflicts",
- nr_unmerged),
- nr_unmerged);
- if (opts->source_tree)
- fprintf_ln(stderr, Q_("Updated %d path from %s",
- "Updated %d paths from %s",
- nr_checkouts),
- nr_checkouts,
- find_unique_abbrev(&opts->source_tree->object.oid,
- DEFAULT_ABBREV));
- else if (!nr_unmerged || nr_checkouts)
- fprintf_ln(stderr, Q_("Updated %d path from the index",
- "Updated %d paths from the index",
- nr_checkouts),
- nr_checkouts);
+ if (checkout_index) {
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ die(_("unable to write new index file"));
+ } else {
+ /*
+ * NEEDSWORK: if --worktree is not specified, we
+ * should save stat info of checked out files in the
+ * index to avoid the next (potentially costly)
+ * refresh. But it's a bit tricker to do...
+ */
+ rollback_lock_file(&lock_file);
}
- if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
- die(_("unable to write new index file"));
-
read_ref_full("HEAD", 0, &rev, NULL);
head = lookup_commit_reference_gently(the_repository, &rev, 1);
@@ -497,7 +618,8 @@ static void describe_detached_head(const char *msg, struct commit *commit)
}
static int reset_tree(struct tree *tree, const struct checkout_opts *o,
- int worktree, int *writeout_error)
+ int worktree, int *writeout_error,
+ struct branch_info *info)
{
struct unpack_trees_options opts;
struct tree_desc tree_desc;
@@ -512,6 +634,9 @@ static int reset_tree(struct tree *tree, const struct checkout_opts *o,
opts.verbose_update = o->show_progress;
opts.src_index = &the_index;
opts.dst_index = &the_index;
+ init_checkout_metadata(&opts.meta, info->refname,
+ info->commit ? &info->commit->object.oid : &null_oid,
+ NULL);
parse_tree(tree);
init_tree_desc(&tree_desc, tree->buffer, tree->size);
switch (unpack_trees(1, &tree_desc, &opts)) {
@@ -531,21 +656,17 @@ static int reset_tree(struct tree *tree, const struct checkout_opts *o,
}
}
-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 */
- /*
- * if not null the branch is detached because it's already
- * checked out in this checkout
- */
- char *checkout;
-};
-
static void setup_branch_path(struct branch_info *branch)
{
struct strbuf buf = STRBUF_INIT;
+ /*
+ * If this is a ref, resolve it; otherwise, look up the OID for our
+ * expression. Failure here is okay.
+ */
+ if (!dwim_ref(branch->name, strlen(branch->name), &branch->oid, &branch->refname, 0))
+ repo_get_oid_committish(the_repository, branch->name, &branch->oid);
+
strbuf_branchname(&buf, branch->name, INTERPRET_BRANCH_LOCAL);
if (strcmp(buf.buf, branch->name))
branch->name = xstrdup(buf.buf);
@@ -553,112 +674,6 @@ static void setup_branch_path(struct branch_info *branch)
branch->path = strbuf_detach(&buf, NULL);
}
-/*
- * Skip merging the trees, updating the index and working directory if and
- * only if we are creating a new branch via "git checkout -b <new_branch>."
- */
-static int skip_merge_working_tree(const struct checkout_opts *opts,
- const struct branch_info *old_branch_info,
- const struct branch_info *new_branch_info)
-{
- /*
- * Do the merge if sparse checkout is on and the user has not opted in
- * to the optimized behavior
- */
- if (core_apply_sparse_checkout && !checkout_optimize_new_branch)
- return 0;
-
- /*
- * We must do the merge if we are actually moving to a new commit.
- */
- if (!old_branch_info->commit || !new_branch_info->commit ||
- !oideq(&old_branch_info->commit->object.oid,
- &new_branch_info->commit->object.oid))
- return 0;
-
- /*
- * opts->patch_mode cannot be used with switching branches so is
- * not tested here
- */
-
- /*
- * opts->quiet only impacts output so doesn't require a merge
- */
-
- /*
- * Honor the explicit request for a three-way merge or to throw away
- * local changes
- */
- if (opts->merge || opts->force)
- return 0;
-
- /*
- * --detach is documented as "updating the index and the files in the
- * working tree" but this optimization skips those steps so fall through
- * to the regular code path.
- */
- if (opts->force_detach)
- return 0;
-
- /*
- * opts->writeout_stage cannot be used with switching branches so is
- * not tested here
- */
-
- /*
- * Honor the explicit ignore requests
- */
- if (!opts->overwrite_ignore || opts->ignore_skipworktree ||
- opts->ignore_other_worktrees)
- return 0;
-
- /*
- * opts->show_progress only impacts output so doesn't require a merge
- */
-
- /*
- * opts->overlay_mode cannot be used with switching branches so is
- * not tested here
- */
-
- /*
- * If we aren't creating a new branch any changes or updates will
- * happen in the existing branch. Since that could only be updating
- * the index and working directory, we don't want to skip those steps
- * or we've defeated any purpose in running the command.
- */
- if (!opts->new_branch)
- return 0;
-
- /*
- * new_branch_force is defined to "create/reset and checkout a branch"
- * so needs to go through the merge to do the reset
- */
- if (opts->new_branch_force)
- return 0;
-
- /*
- * A new orphaned branch requrires the index and the working tree to be
- * adjusted to <start_point>
- */
- if (opts->new_orphan_branch)
- return 0;
-
- /*
- * Remaining variables are not checkout options but used to track state
- */
-
- /*
- * Do the merge if this is the initial checkout. We cannot use
- * is_cache_unborn() here because the index hasn't been loaded yet
- * so cache_nr and timestamp.sec are always zero.
- */
- if (!file_exists(get_index_file()))
- return 0;
-
- return 1;
-}
-
static int merge_working_tree(const struct checkout_opts *opts,
struct branch_info *old_branch_info,
struct branch_info *new_branch_info,
@@ -666,15 +681,21 @@ static int merge_working_tree(const struct checkout_opts *opts,
{
int ret;
struct lock_file lock_file = LOCK_INIT;
+ struct tree *new_tree;
hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
if (read_cache_preload(NULL) < 0)
return error(_("index file corrupt"));
resolve_undo_clear();
- if (opts->force) {
- ret = reset_tree(get_commit_tree(new_branch_info->commit),
- opts, 1, writeout_error);
+ if (opts->new_orphan_branch && opts->orphan_from_empty_tree) {
+ if (new_branch_info->commit)
+ BUG("'switch --orphan' should never accept a commit as starting point");
+ new_tree = parse_tree_indirect(the_hash_algo->empty_tree);
+ } else
+ new_tree = get_commit_tree(new_branch_info->commit);
+ if (opts->discard_changes) {
+ ret = reset_tree(new_tree, opts, 1, writeout_error, new_branch_info);
if (ret)
return ret;
} else {
@@ -703,6 +724,10 @@ static int merge_working_tree(const struct checkout_opts *opts,
topts.quiet = opts->merge && old_branch_info->commit;
topts.verbose_update = opts->show_progress;
topts.fn = twoway_merge;
+ init_checkout_metadata(&topts.meta, new_branch_info->refname,
+ new_branch_info->commit ?
+ &new_branch_info->commit->object.oid :
+ &new_branch_info->oid, NULL);
if (opts->overwrite_ignore) {
topts.dir = xcalloc(1, sizeof(*topts.dir));
topts.dir->flags |= DIR_SHOW_IGNORED;
@@ -712,7 +737,8 @@ static int merge_working_tree(const struct checkout_opts *opts,
&old_branch_info->commit->object.oid :
the_hash_algo->empty_tree);
init_tree_desc(&trees[0], tree->buffer, tree->size);
- tree = parse_tree_indirect(&new_branch_info->commit->object.oid);
+ parse_tree(new_tree);
+ tree = new_tree;
init_tree_desc(&trees[1], tree->buffer, tree->size);
ret = unpack_trees(2, trees, &topts);
@@ -723,11 +749,11 @@ static int merge_working_tree(const struct checkout_opts *opts,
* give up or do a real merge, depending on
* whether the merge flag was used.
*/
- struct tree *result;
struct tree *work;
struct tree *old_tree;
struct merge_options o;
struct strbuf sb = STRBUF_INIT;
+ struct strbuf old_commit_shortname = STRBUF_INIT;
if (!opts->merge)
return 1;
@@ -745,13 +771,6 @@ static int merge_working_tree(const struct checkout_opts *opts,
"the following files:\n%s"), sb.buf);
strbuf_release(&sb);
- if (repo_index_has_changes(the_repository,
- get_commit_tree(old_branch_info->commit),
- &sb))
- warning(_("staged changes in the following files may be lost: %s"),
- sb.buf);
- strbuf_release(&sb);
-
/* Do more real merge */
/*
@@ -766,36 +785,35 @@ static int merge_working_tree(const struct checkout_opts *opts,
*/
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, the_repository);
o.verbosity = 0;
- work = write_tree_from_memory(&o);
+ work = write_in_core_index_as_tree(the_repository);
- ret = reset_tree(get_commit_tree(new_branch_info->commit),
+ ret = reset_tree(new_tree,
opts, 1,
- writeout_error);
+ writeout_error, new_branch_info);
if (ret)
return ret;
o.ancestor = old_branch_info->name;
+ if (old_branch_info->name == NULL) {
+ strbuf_add_unique_abbrev(&old_commit_shortname,
+ &old_branch_info->commit->object.oid,
+ DEFAULT_ABBREV);
+ o.ancestor = old_commit_shortname.buf;
+ }
o.branch1 = new_branch_info->name;
o.branch2 = "local";
ret = merge_trees(&o,
- get_commit_tree(new_branch_info->commit),
+ new_tree,
work,
- old_tree,
- &result);
+ old_tree);
if (ret < 0)
exit(128);
- ret = reset_tree(get_commit_tree(new_branch_info->commit),
+ ret = reset_tree(new_tree,
opts, 0,
- writeout_error);
+ writeout_error, new_branch_info);
strbuf_release(&o.obuf);
+ strbuf_release(&old_commit_shortname);
if (ret)
return ret;
}
@@ -810,7 +828,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
- if (!opts->force && !opts->quiet)
+ if (!opts->discard_changes && !opts->quiet && new_branch_info->commit)
show_local_changes(&new_branch_info->commit->object, &opts->diff_options);
return 0;
@@ -876,7 +894,7 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
strbuf_addf(&msg, "checkout: moving from %s to %s",
old_desc ? old_desc : "(invalid)", new_branch_info->name);
else
- strbuf_insert(&msg, 0, reflog_msg, strlen(reflog_msg));
+ strbuf_insertstr(&msg, 0, reflog_msg);
if (!strcmp(new_branch_info->name, "HEAD") && !new_branch_info->path && !opts->force_detach) {
/* Nothing to do. */
@@ -915,7 +933,7 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
delete_reflog(old_branch_info->path);
}
}
- remove_branch_state(the_repository);
+ remove_branch_state(the_repository, !opts->quiet);
strbuf_release(&msg);
if (!opts->quiet &&
(new_branch_info->path || (!opts->force_detach && !strcmp(new_branch_info->name, "HEAD"))))
@@ -1011,7 +1029,10 @@ static void orphaned_commit_warning(struct commit *old_commit, struct commit *ne
add_pending_object(&revs, object, oid_to_hex(&object->oid));
for_each_ref(add_pending_uninteresting_ref, &revs);
- add_pending_oid(&revs, "HEAD", &new_commit->object.oid, UNINTERESTING);
+ if (new_commit)
+ add_pending_oid(&revs, "HEAD",
+ &new_commit->object.oid,
+ UNINTERESTING);
if (prepare_revision_walk(&revs))
die(_("internal error in revision walk"));
@@ -1021,7 +1042,7 @@ static void orphaned_commit_warning(struct commit *old_commit, struct commit *ne
describe_detached_head(_("Previous HEAD position was"), old_commit);
/* Clean up objects used, as they will be reused. */
- clear_commit_marks_all(ALL_REV_FLAGS);
+ repo_clear_commit_marks(the_repository, ALL_REV_FLAGS);
}
static int switch_branches(const struct checkout_opts *opts,
@@ -1032,6 +1053,7 @@ static int switch_branches(const struct checkout_opts *opts,
void *path_to_free;
struct object_id rev;
int flag, writeout_error = 0;
+ int do_merge = 1;
trace2_cmd_mode("branch");
@@ -1045,22 +1067,26 @@ static int switch_branches(const struct checkout_opts *opts,
if (old_branch_info.path)
skip_prefix(old_branch_info.path, "refs/heads/", &old_branch_info.name);
+ if (opts->new_orphan_branch && opts->orphan_from_empty_tree) {
+ if (new_branch_info->name)
+ BUG("'switch --orphan' should never accept a commit as starting point");
+ new_branch_info->commit = NULL;
+ new_branch_info->name = "(empty)";
+ do_merge = 1;
+ }
+
if (!new_branch_info->name) {
new_branch_info->name = "HEAD";
new_branch_info->commit = old_branch_info.commit;
if (!new_branch_info->commit)
die(_("You are on a branch yet to be born"));
parse_commit_or_die(new_branch_info->commit);
+
+ if (opts->only_merge_on_switching_branches)
+ do_merge = 0;
}
- /* optimize the "checkout -b <new_branch> path */
- if (skip_merge_working_tree(opts, &old_branch_info, new_branch_info)) {
- if (!checkout_optimize_new_branch && !opts->quiet) {
- if (read_cache_preload(NULL) < 0)
- return error(_("index file corrupt"));
- show_local_changes(&new_branch_info->commit->object, &opts->diff_options);
- }
- } else {
+ if (do_merge) {
ret = merge_working_tree(opts, &old_branch_info, new_branch_info, &writeout_error);
if (ret) {
free(path_to_free);
@@ -1080,16 +1106,16 @@ static int switch_branches(const struct checkout_opts *opts,
static int git_checkout_config(const char *var, const char *value, void *cb)
{
- if (!strcmp(var, "checkout.optimizenewbranch")) {
- checkout_optimize_new_branch = git_config_bool(var, value);
- return 0;
- }
+ struct checkout_opts *opts = cb;
if (!strcmp(var, "diff.ignoresubmodules")) {
- struct checkout_opts *opts = cb;
handle_ignore_submodules_arg(&opts->diff_options, value);
return 0;
}
+ if (!strcmp(var, "checkout.guess")) {
+ opts->dwim_new_local_branch = git_config_bool(var, value);
+ return 0;
+ }
if (starts_with(var, "submodule."))
return git_default_submodule_config(var, value, NULL);
@@ -1097,17 +1123,76 @@ static int git_checkout_config(const char *var, const char *value, void *cb)
return git_xmerge_config(var, value, NULL);
}
+static void setup_new_branch_info_and_source_tree(
+ struct branch_info *new_branch_info,
+ struct checkout_opts *opts,
+ struct object_id *rev,
+ const char *arg)
+{
+ struct tree **source_tree = &opts->source_tree;
+ struct object_id branch_rev;
+
+ new_branch_info->name = arg;
+ setup_branch_path(new_branch_info);
+
+ if (!check_refname_format(new_branch_info->path, 0) &&
+ !read_ref(new_branch_info->path, &branch_rev))
+ oidcpy(rev, &branch_rev);
+ else {
+ free((char *)new_branch_info->path);
+ new_branch_info->path = NULL; /* not an existing branch */
+ }
+
+ new_branch_info->commit = lookup_commit_reference_gently(the_repository, rev, 1);
+ if (!new_branch_info->commit) {
+ /* not a commit */
+ *source_tree = parse_tree_indirect(rev);
+ } else {
+ parse_commit_or_die(new_branch_info->commit);
+ *source_tree = get_commit_tree(new_branch_info->commit);
+ }
+}
+
+static const char *parse_remote_branch(const char *arg,
+ struct object_id *rev,
+ int could_be_checkout_paths)
+{
+ int num_matches = 0;
+ const char *remote = unique_tracking_name(arg, rev, &num_matches);
+
+ if (remote && could_be_checkout_paths) {
+ die(_("'%s' could be both a local file and a tracking branch.\n"
+ "Please use -- (and optionally --no-guess) to disambiguate"),
+ arg);
+ }
+
+ if (!remote && num_matches > 1) {
+ if (advice_checkout_ambiguous_remote_branch_name) {
+ advise(_("If you meant to check out a remote tracking branch on, e.g. 'origin',\n"
+ "you can do so by fully qualifying the name with the --track option:\n"
+ "\n"
+ " git checkout --track origin/<name>\n"
+ "\n"
+ "If you'd like to always have checkouts of an ambiguous <name> prefer\n"
+ "one remote, e.g. the 'origin' remote, consider setting\n"
+ "checkout.defaultRemote=origin in your config."));
+ }
+
+ die(_("'%s' matched multiple (%d) remote tracking branches"),
+ arg, num_matches);
+ }
+
+ return remote;
+}
+
static int parse_branchname_arg(int argc, const char **argv,
int dwim_new_local_branch_ok,
struct branch_info *new_branch_info,
struct checkout_opts *opts,
- struct object_id *rev,
- int *dwim_remotes_matched)
+ struct object_id *rev)
{
- struct tree **source_tree = &opts->source_tree;
const char **new_branch = &opts->new_branch;
int argcount = 0;
- struct object_id branch_rev;
const char *arg;
int dash_dash_pos;
int has_dash_dash = 0;
@@ -1157,10 +1242,16 @@ static int parse_branchname_arg(int argc, const char **argv,
if (!argc)
return 0;
+ if (!opts->accept_pathspec) {
+ if (argc > 1)
+ die(_("only one reference expected"));
+ has_dash_dash = 1; /* helps disambiguate */
+ }
+
arg = argv[0];
dash_dash_pos = -1;
for (i = 0; i < argc; i++) {
- if (!strcmp(argv[i], "--")) {
+ if (opts->accept_pathspec && !strcmp(argv[i], "--")) {
dash_dash_pos = i;
break;
}
@@ -1194,21 +1285,18 @@ static int parse_branchname_arg(int argc, const char **argv,
recover_with_dwim = 0;
/*
- * Accept "git checkout foo" and "git checkout foo --"
- * as candidates for dwim.
+ * Accept "git checkout foo", "git checkout foo --"
+ * and "git switch foo" as candidates for dwim.
*/
if (!(argc == 1 && !has_dash_dash) &&
- !(argc == 2 && has_dash_dash))
+ !(argc == 2 && has_dash_dash) &&
+ opts->accept_pathspec)
recover_with_dwim = 0;
if (recover_with_dwim) {
- const char *remote = unique_tracking_name(arg, rev,
- dwim_remotes_matched);
+ const char *remote = parse_remote_branch(arg, rev,
+ could_be_checkout_paths);
if (remote) {
- if (could_be_checkout_paths)
- die(_("'%s' could be both a local file and a tracking branch.\n"
- "Please use -- (and optionally --no-guess) to disambiguate"),
- arg);
*new_branch = arg;
arg = remote;
/* DWIMmed to create local branch, case (3).(b) */
@@ -1229,26 +1317,11 @@ static int parse_branchname_arg(int argc, const char **argv,
argv++;
argc--;
- new_branch_info->name = arg;
- setup_branch_path(new_branch_info);
-
- if (!check_refname_format(new_branch_info->path, 0) &&
- !read_ref(new_branch_info->path, &branch_rev))
- oidcpy(rev, &branch_rev);
- else
- new_branch_info->path = NULL; /* not an existing branch */
-
- new_branch_info->commit = lookup_commit_reference_gently(the_repository, rev, 1);
- if (!new_branch_info->commit) {
- /* not a commit */
- *source_tree = parse_tree_indirect(rev);
- } else {
- parse_commit_or_die(new_branch_info->commit);
- *source_tree = get_commit_tree(new_branch_info->commit);
- }
+ setup_new_branch_info_and_source_tree(new_branch_info, opts, rev, arg);
- if (!*source_tree) /* case (1): want a tree */
+ if (!opts->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
@@ -1258,7 +1331,7 @@ static int parse_branchname_arg(int argc, const char **argv,
*/
if (argc)
verify_non_filename(opts->prefix, arg);
- } else {
+ } else if (opts->accept_pathspec) {
argcount++;
argv++;
argc--;
@@ -1285,6 +1358,60 @@ static int switch_unborn_to_new_branch(const struct checkout_opts *opts)
return status;
}
+static void die_expecting_a_branch(const struct branch_info *branch_info)
+{
+ struct object_id oid;
+ char *to_free;
+
+ if (dwim_ref(branch_info->name, strlen(branch_info->name), &oid, &to_free, 0) == 1) {
+ const char *ref = to_free;
+
+ if (skip_prefix(ref, "refs/tags/", &ref))
+ die(_("a branch is expected, got tag '%s'"), ref);
+ if (skip_prefix(ref, "refs/remotes/", &ref))
+ die(_("a branch is expected, got remote branch '%s'"), ref);
+ die(_("a branch is expected, got '%s'"), ref);
+ }
+ if (branch_info->commit)
+ die(_("a branch is expected, got commit '%s'"), branch_info->name);
+ /*
+ * This case should never happen because we already die() on
+ * non-commit, but just in case.
+ */
+ die(_("a branch is expected, got '%s'"), branch_info->name);
+}
+
+static void die_if_some_operation_in_progress(void)
+{
+ struct wt_status_state state;
+
+ memset(&state, 0, sizeof(state));
+ wt_status_get_state(the_repository, &state, 0);
+
+ if (state.merge_in_progress)
+ die(_("cannot switch branch while merging\n"
+ "Consider \"git merge --quit\" "
+ "or \"git worktree add\"."));
+ if (state.am_in_progress)
+ die(_("cannot switch branch in the middle of an am session\n"
+ "Consider \"git am --quit\" "
+ "or \"git worktree add\"."));
+ if (state.rebase_interactive_in_progress || state.rebase_in_progress)
+ die(_("cannot switch branch while rebasing\n"
+ "Consider \"git rebase --quit\" "
+ "or \"git worktree add\"."));
+ if (state.cherry_pick_in_progress)
+ die(_("cannot switch branch while cherry-picking\n"
+ "Consider \"git cherry-pick --quit\" "
+ "or \"git worktree add\"."));
+ if (state.revert_in_progress)
+ die(_("cannot switch branch while reverting\n"
+ "Consider \"git revert --quit\" "
+ "or \"git worktree add\"."));
+ if (state.bisect_in_progress)
+ warning(_("you are switching branch while bisecting"));
+}
+
static int checkout_branch(struct checkout_opts *opts,
struct branch_info *new_branch_info)
{
@@ -1295,9 +1422,9 @@ static int checkout_branch(struct checkout_opts *opts,
die(_("'%s' cannot be used with switching branches"),
"--patch");
- if (!opts->overlay_mode)
+ if (opts->overlay_mode != -1)
die(_("'%s' cannot be used with switching branches"),
- "--no-overlay");
+ "--[no]-overlay");
if (opts->writeout_stage)
die(_("'%s' cannot be used with switching branches"),
@@ -1306,6 +1433,9 @@ static int checkout_branch(struct checkout_opts *opts,
if (opts->force && opts->merge)
die(_("'%s' cannot be used with '%s'"), "-f", "-m");
+ if (opts->discard_changes && opts->merge)
+ die(_("'%s' cannot be used with '%s'"), "--discard-changes", "--merge");
+
if (opts->force_detach && opts->new_branch)
die(_("'%s' cannot be used with '%s'"),
"--detach", "-b/-B/--orphan");
@@ -1313,6 +1443,8 @@ static int checkout_branch(struct checkout_opts *opts,
if (opts->new_orphan_branch) {
if (opts->track != BRANCH_TRACK_UNSPECIFIED)
die(_("'%s' cannot be used with '%s'"), "--orphan", "-t");
+ if (opts->orphan_from_empty_tree && new_branch_info->name)
+ die(_("'%s' cannot take <start-point>"), "--orphan");
} else if (opts->force_detach) {
if (opts->track != BRANCH_TRACK_UNSPECIFIED)
die(_("'%s' cannot be used with '%s'"), "--detach", "-t");
@@ -1323,6 +1455,23 @@ static int checkout_branch(struct checkout_opts *opts,
die(_("Cannot switch branch to a non-commit '%s'"),
new_branch_info->name);
+ if (!opts->switch_branch_doing_nothing_is_ok &&
+ !new_branch_info->name &&
+ !opts->new_branch &&
+ !opts->force_detach)
+ die(_("missing branch or commit argument"));
+
+ if (!opts->implicit_detach &&
+ !opts->force_detach &&
+ !opts->new_branch &&
+ !opts->new_branch_force &&
+ new_branch_info->name &&
+ !new_branch_info->path)
+ die_expecting_a_branch(new_branch_info);
+
+ if (!opts->can_switch_when_in_progress)
+ die_if_some_operation_in_progress();
+
if (new_branch_info->path && !opts->force_detach && !opts->new_branch &&
!opts->ignore_other_worktrees) {
int flag;
@@ -1344,99 +1493,153 @@ static int checkout_branch(struct checkout_opts *opts,
return switch_branches(opts, new_branch_info);
}
-int cmd_checkout(int argc, const char **argv, const char *prefix)
+static struct option *add_common_options(struct checkout_opts *opts,
+ struct option *prevopts)
{
- struct checkout_opts opts;
- struct branch_info new_branch_info;
- char *conflict_style = NULL;
- int dwim_new_local_branch, no_dwim_new_local_branch = 0;
- int dwim_remotes_matched = 0;
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 HEAD at named commit")),
- OPT_SET_INT('t', "track", &opts.track, N_("set upstream info for new branch"),
+ OPT__QUIET(&opts->quiet, N_("suppress progress reporting")),
+ OPT_CALLBACK_F(0, "recurse-submodules", NULL,
+ "checkout", "control recursive updating of submodules",
+ PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater),
+ OPT_BOOL(0, "progress", &opts->show_progress, N_("force progress reporting")),
+ OPT_BOOL('m', "merge", &opts->merge, N_("perform a 3-way merge with the new branch")),
+ OPT_STRING(0, "conflict", &opts->conflict_style, N_("style"),
+ N_("conflict style (merge or diff3)")),
+ OPT_END()
+ };
+ struct option *newopts = parse_options_concat(prevopts, options);
+ free(prevopts);
+ return newopts;
+}
+
+static struct option *add_common_switch_branch_options(
+ struct checkout_opts *opts, struct option *prevopts)
+{
+ struct option options[] = {
+ OPT_BOOL('d', "detach", &opts->force_detach, N_("detach 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_F('2', "ours", &opts.writeout_stage,
+ OPT__FORCE(&opts->force, N_("force checkout (throw away local modifications)"),
+ PARSE_OPT_NOCOMPLETE),
+ OPT_STRING(0, "orphan", &opts->new_orphan_branch, N_("new-branch"), N_("new unparented branch")),
+ OPT_BOOL_F(0, "overwrite-ignore", &opts->overwrite_ignore,
+ N_("update ignored files (default)"),
+ PARSE_OPT_NOCOMPLETE),
+ OPT_BOOL(0, "ignore-other-worktrees", &opts->ignore_other_worktrees,
+ N_("do not check if another worktree is holding the given ref")),
+ OPT_END()
+ };
+ struct option *newopts = parse_options_concat(prevopts, options);
+ free(prevopts);
+ return newopts;
+}
+
+static struct option *add_checkout_path_options(struct checkout_opts *opts,
+ struct option *prevopts)
+{
+ struct option options[] = {
+ OPT_SET_INT_F('2', "ours", &opts->writeout_stage,
N_("checkout our version for unmerged files"),
2, PARSE_OPT_NONEG),
- OPT_SET_INT_F('3', "theirs", &opts.writeout_stage,
+ OPT_SET_INT_F('3', "theirs", &opts->writeout_stage,
N_("checkout their version for unmerged files"),
3, PARSE_OPT_NONEG),
- OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)"),
- PARSE_OPT_NOCOMPLETE),
- OPT_BOOL('m', "merge", &opts.merge, N_("perform a 3-way merge with the new branch")),
- OPT_BOOL_F(0, "overwrite-ignore", &opts.overwrite_ignore,
- N_("update ignored files (default)"),
- PARSE_OPT_NOCOMPLETE),
- 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,
+ 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_BOOL(0, "no-guess", &no_dwim_new_local_branch,
- N_("do not second guess 'git checkout <no-such-branch>'")),
- OPT_BOOL(0, "ignore-other-worktrees", &opts.ignore_other_worktrees,
- N_("do not check if another worktree is holding the given ref")),
- { OPTION_CALLBACK, 0, "recurse-submodules", NULL,
- "checkout", "control recursive updating of submodules",
- PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater },
- OPT_BOOL(0, "progress", &opts.show_progress, N_("force progress reporting")),
- OPT_BOOL(0, "overlay", &opts.overlay_mode, N_("use overlay mode (default)")),
- OPT_END(),
+ OPT_PATHSPEC_FROM_FILE(&opts->pathspec_from_file),
+ OPT_PATHSPEC_FILE_NUL(&opts->pathspec_file_nul),
+ OPT_END()
};
+ struct option *newopts = parse_options_concat(prevopts, options);
+ free(prevopts);
+ return newopts;
+}
+
+/* create-branch option (either b or c) */
+static char cb_option = 'b';
+
+static int checkout_main(int argc, const char **argv, const char *prefix,
+ struct checkout_opts *opts, struct option *options,
+ const char * const usagestr[])
+{
+ struct branch_info new_branch_info;
+ int parseopt_flags = 0;
- memset(&opts, 0, sizeof(opts));
memset(&new_branch_info, 0, sizeof(new_branch_info));
- opts.overwrite_ignore = 1;
- opts.prefix = prefix;
- opts.show_progress = -1;
- opts.overlay_mode = -1;
+ opts->overwrite_ignore = 1;
+ opts->prefix = prefix;
+ opts->show_progress = -1;
- git_config(git_checkout_config, &opts);
+ git_config(git_checkout_config, opts);
- opts.track = BRANCH_TRACK_UNSPECIFIED;
+ opts->track = BRANCH_TRACK_UNSPECIFIED;
- argc = parse_options(argc, argv, prefix, options, checkout_usage,
- PARSE_OPT_KEEP_DASHDASH);
+ if (!opts->accept_pathspec && !opts->accept_ref)
+ BUG("make up your mind, you need to take _something_");
+ if (opts->accept_pathspec && opts->accept_ref)
+ parseopt_flags = PARSE_OPT_KEEP_DASHDASH;
- dwim_new_local_branch = !no_dwim_new_local_branch;
- if (opts.show_progress < 0) {
- if (opts.quiet)
- opts.show_progress = 0;
+ argc = parse_options(argc, argv, prefix, options,
+ usagestr, parseopt_flags);
+
+ if (opts->show_progress < 0) {
+ if (opts->quiet)
+ opts->show_progress = 0;
else
- opts.show_progress = isatty(2);
+ opts->show_progress = isatty(2);
}
- if (conflict_style) {
- opts.merge = 1; /* implied */
- git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
+ if (opts->conflict_style) {
+ opts->merge = 1; /* implied */
+ git_xmerge_config("merge.conflictstyle", opts->conflict_style, NULL);
+ }
+ if (opts->force) {
+ opts->discard_changes = 1;
+ opts->ignore_unmerged_opt = "--force";
+ opts->ignore_unmerged = 1;
}
- if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1)
- die(_("-b, -B and --orphan are mutually exclusive"));
+ if ((!!opts->new_branch + !!opts->new_branch_force + !!opts->new_orphan_branch) > 1)
+ die(_("-%c, -%c and --orphan are mutually exclusive"),
+ cb_option, toupper(cb_option));
- if (opts.overlay_mode == 1 && opts.patch_mode)
+ if (opts->overlay_mode == 1 && opts->patch_mode)
die(_("-p and --overlay are mutually exclusive"));
+ if (opts->checkout_index >= 0 || opts->checkout_worktree >= 0) {
+ if (opts->checkout_index < 0)
+ opts->checkout_index = 0;
+ if (opts->checkout_worktree < 0)
+ opts->checkout_worktree = 0;
+ } else {
+ if (opts->checkout_index < 0)
+ opts->checkout_index = -opts->checkout_index - 1;
+ if (opts->checkout_worktree < 0)
+ opts->checkout_worktree = -opts->checkout_worktree - 1;
+ }
+ if (opts->checkout_index < 0 || opts->checkout_worktree < 0)
+ BUG("these flags should be non-negative by now");
+ /*
+ * convenient shortcut: "git restore --staged [--worktree]" equals
+ * "git restore --staged [--worktree] --source HEAD"
+ */
+ if (!opts->from_treeish && opts->checkout_index)
+ opts->from_treeish = "HEAD";
+
/*
* 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.
+ * -b/-B/-c/-C/--orphan is being used.
*/
- if (opts.new_branch_force)
- opts.new_branch = opts.new_branch_force;
+ if (opts->new_branch_force)
+ opts->new_branch = opts->new_branch_force;
- if (opts.new_orphan_branch)
- opts.new_branch = opts.new_orphan_branch;
+ 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) {
+ /* --track without -c/-C/-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"));
@@ -1444,8 +1647,8 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
skip_prefix(argv0, "remotes/", &argv0);
argv0 = strchr(argv0, '/');
if (!argv0 || !argv0[1])
- die(_("missing branch name; try -b"));
- opts.new_branch = argv0 + 1;
+ die(_("missing branch name; try -%c"), cb_option);
+ opts->new_branch = argv0 + 1;
}
/*
@@ -1461,77 +1664,223 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
* including "last branch" syntax and DWIM-ery for names of
* remote branches, erroring out for invalid or ambiguous cases.
*/
- if (argc) {
+ if (argc && opts->accept_ref) {
struct object_id rev;
int dwim_ok =
- !opts.patch_mode &&
- dwim_new_local_branch &&
- opts.track == BRANCH_TRACK_UNSPECIFIED &&
- !opts.new_branch;
+ !opts->patch_mode &&
+ opts->dwim_new_local_branch &&
+ opts->track == BRANCH_TRACK_UNSPECIFIED &&
+ !opts->new_branch;
int n = parse_branchname_arg(argc, argv, dwim_ok,
- &new_branch_info, &opts, &rev,
- &dwim_remotes_matched);
+ &new_branch_info, opts, &rev);
argv += n;
argc -= n;
+ } else if (!opts->accept_ref && opts->from_treeish) {
+ struct object_id rev;
+
+ if (get_oid_mb(opts->from_treeish, &rev))
+ die(_("could not resolve %s"), opts->from_treeish);
+
+ setup_new_branch_info_and_source_tree(&new_branch_info,
+ opts, &rev,
+ opts->from_treeish);
+
+ if (!opts->source_tree)
+ die(_("reference is not a tree: %s"), opts->from_treeish);
}
if (argc) {
- parse_pathspec(&opts.pathspec, 0,
- opts.patch_mode ? PATHSPEC_PREFIX_ORIGIN : 0,
+ parse_pathspec(&opts->pathspec, 0,
+ opts->patch_mode ? PATHSPEC_PREFIX_ORIGIN : 0,
prefix, argv);
- if (!opts.pathspec.nr)
+ 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)
+ if (opts->new_branch && argc == 1 && !new_branch_info.commit)
die(_("'%s' is not a commit and a branch '%s' cannot be created from it"),
- argv[0], opts.new_branch);
+ argv[0], opts->new_branch);
- if (opts.force_detach)
+ if (opts->force_detach)
die(_("git checkout: --detach does not take a path argument '%s'"),
argv[0]);
+ }
+
+ if (opts->pathspec_from_file) {
+ if (opts->pathspec.nr)
+ die(_("--pathspec-from-file is incompatible with pathspec arguments"));
+
+ if (opts->force_detach)
+ die(_("--pathspec-from-file is incompatible with --detach"));
+
+ if (opts->patch_mode)
+ die(_("--pathspec-from-file is incompatible with --patch"));
- if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge)
+ parse_pathspec_file(&opts->pathspec, 0,
+ 0,
+ prefix, opts->pathspec_from_file, opts->pathspec_file_nul);
+ } else if (opts->pathspec_file_nul) {
+ die(_("--pathspec-file-nul requires --pathspec-from-file"));
+ }
+
+ opts->pathspec.recursive = 1;
+
+ if (opts->pathspec.nr) {
+ 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."));
+ } else {
+ if (opts->accept_pathspec && !opts->empty_pathspec_ok &&
+ !opts->patch_mode) /* patch mode is special */
+ die(_("you must specify path(s) to restore"));
}
- if (opts.new_branch) {
+ if (opts->new_branch) {
struct strbuf buf = STRBUF_INIT;
- if (opts.new_branch_force)
- opts.branch_exists = validate_branchname(opts.new_branch, &buf);
+ if (opts->new_branch_force)
+ opts->branch_exists = validate_branchname(opts->new_branch, &buf);
else
- opts.branch_exists =
- validate_new_branchname(opts.new_branch, &buf, 0);
+ opts->branch_exists =
+ validate_new_branchname(opts->new_branch, &buf, 0);
strbuf_release(&buf);
}
UNLEAK(opts);
- if (opts.patch_mode || opts.pathspec.nr) {
- int ret = checkout_paths(&opts, new_branch_info.name);
- if (ret && dwim_remotes_matched > 1 &&
- advice_checkout_ambiguous_remote_branch_name)
- advise(_("'%s' matched more than one remote tracking branch.\n"
- "We found %d remotes with a reference that matched. So we fell back\n"
- "on trying to resolve the argument as a path, but failed there too!\n"
- "\n"
- "If you meant to check out a remote tracking branch on, e.g. 'origin',\n"
- "you can do so by fully qualifying the name with the --track option:\n"
- "\n"
- " git checkout --track origin/<name>\n"
- "\n"
- "If you'd like to always have checkouts of an ambiguous <name> prefer\n"
- "one remote, e.g. the 'origin' remote, consider setting\n"
- "checkout.defaultRemote=origin in your config."),
- argv[0],
- dwim_remotes_matched);
- return ret;
- } else {
- return checkout_branch(&opts, &new_branch_info);
+ if (opts->patch_mode || opts->pathspec.nr)
+ return checkout_paths(opts, &new_branch_info);
+ else
+ return checkout_branch(opts, &new_branch_info);
+}
+
+int cmd_checkout(int argc, const char **argv, const char *prefix)
+{
+ struct checkout_opts opts;
+ struct option *options;
+ struct option checkout_options[] = {
+ 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, "guess", &opts.dwim_new_local_branch,
+ N_("second guess 'git checkout <no-such-branch>' (default)")),
+ OPT_BOOL(0, "overlay", &opts.overlay_mode, N_("use overlay mode (default)")),
+ OPT_END()
+ };
+ int ret;
+
+ memset(&opts, 0, sizeof(opts));
+ opts.dwim_new_local_branch = 1;
+ opts.switch_branch_doing_nothing_is_ok = 1;
+ opts.only_merge_on_switching_branches = 0;
+ opts.accept_ref = 1;
+ opts.accept_pathspec = 1;
+ opts.implicit_detach = 1;
+ opts.can_switch_when_in_progress = 1;
+ opts.orphan_from_empty_tree = 0;
+ opts.empty_pathspec_ok = 1;
+ opts.overlay_mode = -1;
+ opts.checkout_index = -2; /* default on */
+ opts.checkout_worktree = -2; /* default on */
+
+ if (argc == 3 && !strcmp(argv[1], "-b")) {
+ /*
+ * User ran 'git checkout -b <branch>' and expects
+ * the same behavior as 'git switch -c <branch>'.
+ */
+ opts.switch_branch_doing_nothing_is_ok = 0;
+ opts.only_merge_on_switching_branches = 1;
}
+
+ options = parse_options_dup(checkout_options);
+ options = add_common_options(&opts, options);
+ options = add_common_switch_branch_options(&opts, options);
+ options = add_checkout_path_options(&opts, options);
+
+ ret = checkout_main(argc, argv, prefix, &opts,
+ options, checkout_usage);
+ FREE_AND_NULL(options);
+ return ret;
+}
+
+int cmd_switch(int argc, const char **argv, const char *prefix)
+{
+ struct checkout_opts opts;
+ struct option *options = NULL;
+ struct option switch_options[] = {
+ OPT_STRING('c', "create", &opts.new_branch, N_("branch"),
+ N_("create and switch to a new branch")),
+ OPT_STRING('C', "force-create", &opts.new_branch_force, N_("branch"),
+ N_("create/reset and switch to a branch")),
+ OPT_BOOL(0, "guess", &opts.dwim_new_local_branch,
+ N_("second guess 'git switch <no-such-branch>'")),
+ OPT_BOOL(0, "discard-changes", &opts.discard_changes,
+ N_("throw away local modifications")),
+ OPT_END()
+ };
+ int ret;
+
+ memset(&opts, 0, sizeof(opts));
+ opts.dwim_new_local_branch = 1;
+ opts.accept_ref = 1;
+ opts.accept_pathspec = 0;
+ opts.switch_branch_doing_nothing_is_ok = 0;
+ opts.only_merge_on_switching_branches = 1;
+ opts.implicit_detach = 0;
+ opts.can_switch_when_in_progress = 0;
+ opts.orphan_from_empty_tree = 1;
+ opts.overlay_mode = -1;
+
+ options = parse_options_dup(switch_options);
+ options = add_common_options(&opts, options);
+ options = add_common_switch_branch_options(&opts, options);
+
+ cb_option = 'c';
+
+ ret = checkout_main(argc, argv, prefix, &opts,
+ options, switch_branch_usage);
+ FREE_AND_NULL(options);
+ return ret;
+}
+
+int cmd_restore(int argc, const char **argv, const char *prefix)
+{
+ struct checkout_opts opts;
+ struct option *options;
+ struct option restore_options[] = {
+ OPT_STRING('s', "source", &opts.from_treeish, "<tree-ish>",
+ N_("which tree-ish to checkout from")),
+ OPT_BOOL('S', "staged", &opts.checkout_index,
+ N_("restore the index")),
+ OPT_BOOL('W', "worktree", &opts.checkout_worktree,
+ N_("restore the working tree (default)")),
+ OPT_BOOL(0, "ignore-unmerged", &opts.ignore_unmerged,
+ N_("ignore unmerged entries")),
+ OPT_BOOL(0, "overlay", &opts.overlay_mode, N_("use overlay mode")),
+ OPT_END()
+ };
+ int ret;
+
+ memset(&opts, 0, sizeof(opts));
+ opts.accept_ref = 0;
+ opts.accept_pathspec = 1;
+ opts.empty_pathspec_ok = 0;
+ opts.overlay_mode = 0;
+ opts.checkout_index = -1; /* default off */
+ opts.checkout_worktree = -2; /* default on */
+ opts.ignore_unmerged_opt = "--ignore-unmerged";
+
+ options = parse_options_dup(restore_options);
+ options = add_common_options(&opts, options);
+ options = add_checkout_path_options(&opts, options);
+
+ ret = checkout_main(argc, argv, prefix, &opts,
+ options, restore_usage);
+ FREE_AND_NULL(options);
+ return ret;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 16:50:55 +0000