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-rw-r--r--builtin/checkout.c235
1 files changed, 181 insertions, 54 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c
index acdafc6e4c..ffa776c6e1 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1,3 +1,4 @@
+#define USE_THE_INDEX_COMPATIBILITY_MACROS
#include "builtin.h"
#include "config.h"
#include "checkout.h"
@@ -44,6 +45,8 @@ struct checkout_opts {
int ignore_skipworktree;
int ignore_other_worktrees;
int show_progress;
+ int count_checkout_paths;
+ int overlay_mode;
/*
* If new checkout options are added, skip_merge_working_tree
* should be updated accordingly.
@@ -115,7 +118,8 @@ static int update_some(const struct object_id *oid, struct strbuf *base,
static int read_tree_some(struct tree *tree, const struct pathspec *pathspec)
{
- read_tree_recursive(tree, "", 0, 0, pathspec, update_some, NULL);
+ read_tree_recursive(the_repository, tree, "", 0, 0,
+ pathspec, update_some, NULL);
/* update the index with the given tree's info
* for all args, expanding wildcards, and exit
@@ -132,7 +136,8 @@ static int skip_same_name(const struct cache_entry *ce, int pos)
return pos;
}
-static int check_stage(int stage, const struct cache_entry *ce, int pos)
+static int check_stage(int stage, const struct cache_entry *ce, int pos,
+ int overlay_mode)
{
while (pos < active_nr &&
!strcmp(active_cache[pos]->name, ce->name)) {
@@ -140,6 +145,8 @@ static int check_stage(int stage, const struct cache_entry *ce, int pos)
return 0;
pos++;
}
+ if (!overlay_mode)
+ return 0;
if (stage == 2)
return error(_("path '%s' does not have our version"), ce->name);
else
@@ -165,21 +172,27 @@ static int check_stages(unsigned stages, const struct cache_entry *ce, int pos)
}
static int checkout_stage(int stage, const struct cache_entry *ce, int pos,
- const struct checkout *state)
+ const struct checkout *state, int *nr_checkouts,
+ int overlay_mode)
{
while (pos < active_nr &&
!strcmp(active_cache[pos]->name, ce->name)) {
if (ce_stage(active_cache[pos]) == stage)
- return checkout_entry(active_cache[pos], state, NULL);
+ return checkout_entry(active_cache[pos], state,
+ NULL, nr_checkouts);
pos++;
}
+ if (!overlay_mode) {
+ unlink_entry(ce);
+ return 0;
+ }
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, const struct checkout *state)
+static int checkout_merged(int pos, const struct checkout *state, int *nr_checkouts)
{
struct cache_entry *ce = active_cache[pos];
const char *path = ce->name;
@@ -242,11 +255,64 @@ static int checkout_merged(int pos, const struct checkout *state)
ce = make_transient_cache_entry(mode, &oid, path, 2);
if (!ce)
die(_("make_cache_entry failed for path '%s'"), path);
- status = checkout_entry(ce, state, NULL);
+ status = checkout_entry(ce, state, NULL, nr_checkouts);
discard_cache_entry(ce);
return status;
}
+static void mark_ce_for_checkout_overlay(struct cache_entry *ce,
+ char *ps_matched,
+ const struct checkout_opts *opts)
+{
+ ce->ce_flags &= ~CE_MATCHED;
+ if (!opts->ignore_skipworktree && ce_skip_worktree(ce))
+ return;
+ if (opts->source_tree && !(ce->ce_flags & CE_UPDATE))
+ /*
+ * "git checkout tree-ish -- path", but this entry
+ * is in the original index but is not in tree-ish
+ * or does not match the pathspec; it will not be
+ * checked out to the working tree. We will not do
+ * anything to this entry at all.
+ */
+ return;
+ /*
+ * Either this entry came from the tree-ish we are
+ * checking the paths out of, or we are checking out
+ * of the index.
+ *
+ * If it comes from the tree-ish, we already know it
+ * matches the pathspec and could just stamp
+ * CE_MATCHED to it from update_some(). But we still
+ * need ps_matched and read_tree_recursive (and
+ * eventually tree_entry_interesting) cannot fill
+ * ps_matched yet. Once it can, we can avoid calling
+ * match_pathspec() for _all_ entries when
+ * opts->source_tree != NULL.
+ */
+ if (ce_path_match(&the_index, ce, &opts->pathspec, ps_matched))
+ ce->ce_flags |= CE_MATCHED;
+}
+
+static void mark_ce_for_checkout_no_overlay(struct cache_entry *ce,
+ char *ps_matched,
+ const struct checkout_opts *opts)
+{
+ ce->ce_flags &= ~CE_MATCHED;
+ if (!opts->ignore_skipworktree && ce_skip_worktree(ce))
+ return;
+ if (ce_path_match(&the_index, ce, &opts->pathspec, ps_matched)) {
+ ce->ce_flags |= CE_MATCHED;
+ if (opts->source_tree && !(ce->ce_flags & CE_UPDATE))
+ /*
+ * In overlay mode, but the path is not in
+ * tree-ish, which means we should remove it
+ * from the index and the working tree.
+ */
+ ce->ce_flags |= CE_REMOVE | CE_WT_REMOVE;
+ }
+}
+
static int checkout_paths(const struct checkout_opts *opts,
const char *revision)
{
@@ -257,6 +323,9 @@ static int checkout_paths(const struct checkout_opts *opts,
struct commit *head;
int errs = 0;
struct lock_file lock_file = LOCK_INIT;
+ int nr_checkouts = 0, nr_unmerged = 0;
+
+ trace2_cmd_mode(opts->patch_mode ? "patch" : "path");
if (opts->track != BRANCH_TRACK_UNSPECIFIED)
die(_("'%s' cannot be used with updating paths"), "--track");
@@ -284,7 +353,7 @@ static int checkout_paths(const struct checkout_opts *opts,
return run_add_interactive(revision, "--patch=checkout",
&opts->pathspec);
- hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
+ repo_hold_locked_index(the_repository, &lock_file, LOCK_DIE_ON_ERROR);
if (read_cache_preload(&opts->pathspec) < 0)
return error(_("index file corrupt"));
@@ -297,39 +366,17 @@ static int checkout_paths(const struct checkout_opts *opts,
* Make sure all pathspecs participated in locating the paths
* to be checked out.
*/
- for (pos = 0; pos < active_nr; pos++) {
- struct cache_entry *ce = active_cache[pos];
- ce->ce_flags &= ~CE_MATCHED;
- if (!opts->ignore_skipworktree && ce_skip_worktree(ce))
- continue;
- if (opts->source_tree && !(ce->ce_flags & CE_UPDATE))
- /*
- * "git checkout tree-ish -- path", but this entry
- * is in the original index; it will not be checked
- * out to the working tree and it does not matter
- * if pathspec matched this entry. We will not do
- * anything to this entry at all.
- */
- continue;
- /*
- * Either this entry came from the tree-ish we are
- * checking the paths out of, or we are checking out
- * of the index.
- *
- * If it comes from the tree-ish, we already know it
- * matches the pathspec and could just stamp
- * CE_MATCHED to it from update_some(). But we still
- * need ps_matched and read_tree_recursive (and
- * eventually tree_entry_interesting) cannot fill
- * ps_matched yet. Once it can, we can avoid calling
- * match_pathspec() for _all_ entries when
- * opts->source_tree != NULL.
- */
- if (ce_path_match(&the_index, ce, &opts->pathspec, ps_matched))
- ce->ce_flags |= CE_MATCHED;
- }
+ for (pos = 0; pos < active_nr; pos++)
+ if (opts->overlay_mode)
+ mark_ce_for_checkout_overlay(active_cache[pos],
+ ps_matched,
+ opts);
+ else
+ mark_ce_for_checkout_no_overlay(active_cache[pos],
+ ps_matched,
+ opts);
- if (report_path_error(ps_matched, &opts->pathspec, opts->prefix)) {
+ if (report_path_error(ps_matched, &opts->pathspec)) {
free(ps_matched);
return 1;
}
@@ -348,7 +395,7 @@ static int checkout_paths(const struct checkout_opts *opts,
if (opts->force) {
warning(_("path '%s' is unmerged"), ce->name);
} else if (opts->writeout_stage) {
- errs |= check_stage(opts->writeout_stage, ce, pos);
+ errs |= check_stage(opts->writeout_stage, ce, pos, opts->overlay_mode);
} else if (opts->merge) {
errs |= check_stages((1<<2) | (1<<3), ce, pos);
} else {
@@ -371,17 +418,44 @@ static int checkout_paths(const struct checkout_opts *opts,
struct cache_entry *ce = active_cache[pos];
if (ce->ce_flags & CE_MATCHED) {
if (!ce_stage(ce)) {
- errs |= checkout_entry(ce, &state, NULL);
+ errs |= checkout_entry(ce, &state,
+ NULL, &nr_checkouts);
continue;
}
if (opts->writeout_stage)
- errs |= checkout_stage(opts->writeout_stage, ce, pos, &state);
+ errs |= checkout_stage(opts->writeout_stage,
+ ce, pos,
+ &state,
+ &nr_checkouts, opts->overlay_mode);
else if (opts->merge)
- errs |= checkout_merged(pos, &state);
+ errs |= checkout_merged(pos, &state,
+ &nr_unmerged);
pos = skip_same_name(ce, pos) - 1;
}
}
- errs |= finish_delayed_checkout(&state);
+ 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);
+ }
if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
@@ -543,6 +617,11 @@ static int skip_merge_working_tree(const struct checkout_opts *opts,
*/
/*
+ * 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
@@ -569,6 +648,14 @@ static int skip_merge_working_tree(const struct checkout_opts *opts,
* 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;
}
@@ -613,7 +700,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
topts.initial_checkout = is_cache_unborn();
topts.update = 1;
topts.merge = 1;
- topts.gently = opts->merge && old_branch_info->commit;
+ topts.quiet = opts->merge && old_branch_info->commit;
topts.verbose_update = opts->show_progress;
topts.fn = twoway_merge;
if (opts->overwrite_ignore) {
@@ -638,7 +725,10 @@ static int merge_working_tree(const struct checkout_opts *opts,
*/
struct tree *result;
struct tree *work;
+ struct tree *old_tree;
struct merge_options o;
+ struct strbuf sb = STRBUF_INIT;
+
if (!opts->merge)
return 1;
@@ -648,6 +738,19 @@ static int merge_working_tree(const struct checkout_opts *opts,
*/
if (!old_branch_info->commit)
return 1;
+ old_tree = get_commit_tree(old_branch_info->commit);
+
+ if (repo_index_has_changes(the_repository, old_tree, &sb))
+ die(_("cannot continue with staged changes in "
+ "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 */
@@ -670,7 +773,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
* a pain; plumb in an option to set
* o.renormalize?
*/
- init_merge_options(&o);
+ init_merge_options(&o, the_repository);
o.verbosity = 0;
work = write_tree_from_memory(&o);
@@ -685,7 +788,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
ret = merge_trees(&o,
get_commit_tree(new_branch_info->commit),
work,
- get_commit_tree(old_branch_info->commit),
+ old_tree,
&result);
if (ret < 0)
exit(128);
@@ -753,7 +856,8 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
free(refname);
}
else
- create_branch(opts->new_branch, new_branch_info->name,
+ create_branch(the_repository,
+ opts->new_branch, new_branch_info->name,
opts->new_branch_force ? 1 : 0,
opts->new_branch_force ? 1 : 0,
opts->new_branch_log,
@@ -811,7 +915,7 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
delete_reflog(old_branch_info->path);
}
}
- remove_branch_state();
+ remove_branch_state(the_repository);
strbuf_release(&msg);
if (!opts->quiet &&
(new_branch_info->path || (!opts->force_detach && !strcmp(new_branch_info->name, "HEAD"))))
@@ -928,6 +1032,9 @@ static int switch_branches(const struct checkout_opts *opts,
void *path_to_free;
struct object_id rev;
int flag, writeout_error = 0;
+
+ trace2_cmd_mode("branch");
+
memset(&old_branch_info, 0, sizeof(old_branch_info));
old_branch_info.path = path_to_free = resolve_refdup("HEAD", 0, &rev, &flag);
if (old_branch_info.path)
@@ -1064,6 +1171,7 @@ static int parse_branchname_arg(int argc, const char **argv,
has_dash_dash = 1; /* case (3) or (1) */
else if (dash_dash_pos >= 2)
die(_("only one reference expected, %d given."), dash_dash_pos);
+ opts->count_checkout_paths = !opts->quiet && !has_dash_dash;
if (!strcmp(arg, "-"))
arg = "@{-1}";
@@ -1079,9 +1187,12 @@ static int parse_branchname_arg(int argc, const char **argv,
*/
int recover_with_dwim = dwim_new_local_branch_ok;
- if (!has_dash_dash &&
- (check_filename(opts->prefix, arg) || !no_wildcard(arg)))
+ int could_be_checkout_paths = !has_dash_dash &&
+ check_filename(opts->prefix, arg);
+
+ if (!has_dash_dash && !no_wildcard(arg))
recover_with_dwim = 0;
+
/*
* Accept "git checkout foo" and "git checkout foo --"
* as candidates for dwim.
@@ -1094,6 +1205,10 @@ static int parse_branchname_arg(int argc, const char **argv,
const char *remote = unique_tracking_name(arg, rev,
dwim_remotes_matched);
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) */
@@ -1157,6 +1272,8 @@ static int switch_unborn_to_new_branch(const struct checkout_opts *opts)
int status;
struct strbuf branch_ref = STRBUF_INIT;
+ trace2_cmd_mode("unborn");
+
if (!opts->new_branch)
die(_("You are on a branch yet to be born"));
strbuf_addf(&branch_ref, "refs/heads/%s", opts->new_branch);
@@ -1178,6 +1295,10 @@ static int checkout_branch(struct checkout_opts *opts,
die(_("'%s' cannot be used with switching branches"),
"--patch");
+ if (!opts->overlay_mode)
+ die(_("'%s' cannot be used with switching branches"),
+ "--no-overlay");
+
if (opts->writeout_stage)
die(_("'%s' cannot be used with switching branches"),
"--ours/--theirs");
@@ -1228,7 +1349,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
struct checkout_opts opts;
struct branch_info new_branch_info;
char *conflict_style = NULL;
- int dwim_new_local_branch = 1;
+ 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")),
@@ -1258,14 +1379,15 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
OPT_BOOL('p', "patch", &opts.patch_mode, N_("select hunks interactively")),
OPT_BOOL(0, "ignore-skip-worktree-bits", &opts.ignore_skipworktree,
N_("do not limit pathspecs to sparse entries only")),
- OPT_HIDDEN_BOOL(0, "guess", &dwim_new_local_branch,
- N_("second guess 'git checkout <no-such-branch>'")),
+ OPT_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(),
};
@@ -1274,6 +1396,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
opts.overwrite_ignore = 1;
opts.prefix = prefix;
opts.show_progress = -1;
+ opts.overlay_mode = -1;
git_config(git_checkout_config, &opts);
@@ -1282,6 +1405,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, options, checkout_usage,
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;
@@ -1297,6 +1421,9 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1)
die(_("-b, -B and --orphan are mutually exclusive"));
+ if (opts.overlay_mode == 1 && opts.patch_mode)
+ die(_("-p and --overlay are mutually exclusive"));
+
/*
* From here on, new_branch will contain the branch to be checked out,
* and new_branch_force and new_orphan_branch will tell us which one of
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 05:58:11 +0000