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-rw-r--r--builtin/checkout.c156
1 files changed, 118 insertions, 38 deletions
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 24b8593..ffa776c 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -46,6 +46,7 @@ struct checkout_opts {
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.
@@ -135,7 +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)) {
@@ -143,6 +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
@@ -168,7 +172,8 @@ 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, int *nr_checkouts)
+ const struct checkout *state, int *nr_checkouts,
+ int overlay_mode)
{
while (pos < active_nr &&
!strcmp(active_cache[pos]->name, ce->name)) {
@@ -177,6 +182,10 @@ static int checkout_stage(int stage, const struct cache_entry *ce, int pos,
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
@@ -251,6 +260,59 @@ static int checkout_merged(int pos, const struct checkout *state, int *nr_checko
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)
{
@@ -263,6 +325,8 @@ static int checkout_paths(const struct checkout_opts *opts,
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");
@@ -302,39 +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;
}
@@ -353,7 +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 {
@@ -383,13 +425,16 @@ static int checkout_paths(const struct checkout_opts *opts,
if (opts->writeout_stage)
errs |= checkout_stage(opts->writeout_stage,
ce, pos,
- &state, &nr_checkouts);
+ &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) {
@@ -572,6 +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
@@ -650,7 +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) {
@@ -675,7 +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;
@@ -685,6 +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 */
@@ -722,7 +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);
@@ -966,6 +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)
@@ -1203,6 +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);
@@ -1224,6 +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");
@@ -1312,6 +1387,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
"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(),
};
@@ -1320,6 +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);
@@ -1344,6 +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