[GSoC][PATCH v8 13/20] stash: convert store to builtin

[Paul-Sebastian Ungureanu <ungureanupaulsebastian@xxxxxxxxx>]

Add stash store to the helper and delete the store_stash function
from the shell script.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@xxxxxxxxx>
---
 builtin/stash--helper.c | 55 +++++++++++++++++++++++++++++++++++++++++
 git-stash.sh            | 43 ++------------------------------
 2 files changed, 57 insertions(+), 41 deletions(-)

diff --git a/builtin/stash--helper.c b/builtin/stash--helper.c
index 02b593e0cd..87568b0f34 100644
--- a/builtin/stash--helper.c
+++ b/builtin/stash--helper.c
@@ -58,6 +58,11 @@ static const char * const git_stash_helper_clear_usage[] = {
 	NULL
 };
 
+static const char * const git_stash_helper_store_usage[] = {
+	N_("git stash--helper store [-m|--message <message>] [-q|--quiet] <commit>"),
+	NULL
+};
+
 static const char *ref_stash = "refs/stash";
 static int quiet;
 static struct strbuf stash_index_path = STRBUF_INIT;
@@ -723,6 +728,54 @@ static int show_stash(int argc, const char **argv, const char *prefix)
 	return diff_result_code(&rev.diffopt, 0);
 }
 
+static int do_store_stash(const char *w_commit, const char *stash_msg,
+			  int quiet)
+{
+	int ret = 0;
+	int need_to_free = 0;
+	struct object_id obj;
+
+	if (!stash_msg) {
+		need_to_free = 1;
+		stash_msg  = xstrdup("Created via \"git stash store\".");
+	}
+
+	ret = get_oid(w_commit, &obj);
+	if (!ret) {
+		ret = update_ref(stash_msg, ref_stash, &obj, NULL,
+				 REF_FORCE_CREATE_REFLOG,
+				 quiet ? UPDATE_REFS_QUIET_ON_ERR :
+				 UPDATE_REFS_MSG_ON_ERR);
+	}
+	if (ret && !quiet)
+		fprintf_ln(stderr, _("Cannot update %s with %s"),
+			   ref_stash, w_commit);
+	if (need_to_free)
+		free((char *) stash_msg);
+	return ret;
+}
+
+static int store_stash(int argc, const char **argv, const char *prefix)
+{
+	const char *stash_msg = NULL;
+	struct option options[] = {
+		OPT__QUIET(&quiet, N_("be quiet, only report errors")),
+		OPT_STRING('m', "message", &stash_msg, "message", N_("stash message")),
+		OPT_END()
+	};
+
+	argc = parse_options(argc, argv, prefix, options,
+			     git_stash_helper_store_usage,
+			     PARSE_OPT_KEEP_UNKNOWN);
+
+	if (argc != 1) {
+		fprintf_ln(stderr, _("\"git stash store\" requires one <commit> argument"));
+		return -1;
+	}
+
+	return do_store_stash(argv[0], stash_msg, quiet);
+}
+
 int cmd_stash__helper(int argc, const char **argv, const char *prefix)
 {
 	pid_t pid = getpid();
@@ -757,6 +810,8 @@ int cmd_stash__helper(int argc, const char **argv, const char *prefix)
 		return !!list_stash(argc, argv, prefix);
 	else if (!strcmp(argv[0], "show"))
 		return !!show_stash(argc, argv, prefix);
+	else if (!strcmp(argv[0], "store"))
+		return !!store_stash(argc, argv, prefix);
 
 	usage_msg_opt(xstrfmt(_("unknown subcommand: %s"), argv[0]),
 		      git_stash_helper_usage, options);
diff --git a/git-stash.sh b/git-stash.sh
index 0d05cbc1e5..5739c51527 100755
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -191,45 +191,6 @@ create_stash () {
 	die "$(gettext "Cannot record working tree state")"
 }
 
-store_stash () {
-	while test $# != 0
-	do
-		case "$1" in
-		-m|--message)
-			shift
-			stash_msg="$1"
-			;;
-		-m*)
-			stash_msg=${1#-m}
-			;;
-		--message=*)
-			stash_msg=${1#--message=}
-			;;
-		-q|--quiet)
-			quiet=t
-			;;
-		*)
-			break
-			;;
-		esac
-		shift
-	done
-	test $# = 1 ||
-	die "$(eval_gettext "\"$dashless store\" requires one <commit> argument")"
-
-	w_commit="$1"
-	if test -z "$stash_msg"
-	then
-		stash_msg="Created via \"git stash store\"."
-	fi
-
-	git update-ref --create-reflog -m "$stash_msg" $ref_stash $w_commit
-	ret=$?
-	test $ret != 0 && test -z "$quiet" &&
-	die "$(eval_gettext "Cannot update \$ref_stash with \$w_commit")"
-	return $ret
-}
-
 push_stash () {
 	keep_index=
 	patch_mode=
@@ -308,7 +269,7 @@ push_stash () {
 		clear_stash || die "$(gettext "Cannot initialize stash")"
 
 	create_stash -m "$stash_msg" -u "$untracked" -- "$@"
-	store_stash -m "$stash_msg" -q $w_commit ||
+	git stash--helper store -m "$stash_msg" -q $w_commit ||
 	die "$(gettext "Cannot save the current status")"
 	say "$(eval_gettext "Saved working directory and index state \$stash_msg")"
 
@@ -468,7 +429,7 @@ create)
 	;;
 store)
 	shift
-	store_stash "$@"
+	git stash--helper store "$@"
 	;;
 drop)
 	shift
-- 
2.19.0.rc0.22.gc26283d74e