[PATCH v4 5/5] stash: convert pop to builtin

[Joel Teichroeb <joel@teichroeb.net>]

Add stash pop to the helper and delete the pop_stash, drop_stash,
assert_stash_ref and pop_stash functions from the shell script
now that they are no longer needed.

Signed-off-by: Joel Teichroeb <joel@teichroeb.net>
---
 builtin/stash--helper.c | 41 ++++++++++++++++++++++++++++++++++++++++
 git-stash.sh            | 50 ++++---------------------------------------------
 2 files changed, 45 insertions(+), 46 deletions(-)

diff --git a/builtin/stash--helper.c b/builtin/stash--helper.c
index 51fe8cab7..aa8a2bb3a 100644
--- a/builtin/stash--helper.c
+++ b/builtin/stash--helper.c
@@ -12,6 +12,7 @@
 
 static const char * const git_stash_helper_usage[] = {
 	N_("git stash--helper drop [-q|--quiet] [<stash>]"),
+	N_("git stash--helper pop [--index] [-q|--quiet] [<stash>]"),
 	N_("git stash--helper apply [--index] [-q|--quiet] [<stash>]"),
 	N_("git stash--helper branch <branchname> [<stash>]"),
 	N_("git stash--helper clear"),
@@ -23,6 +24,11 @@ static const char * const git_stash_helper_drop_usage[] = {
 	NULL
 };
 
+static const char * const git_stash_helper_pop_usage[] = {
+	N_("git stash--helper pop [--index] [-q|--quiet] [<stash>]"),
+	NULL
+};
+
 static const char * const git_stash_helper_apply_usage[] = {
 	N_("git stash--helper apply [--index] [-q|--quiet] [<stash>]"),
 	NULL
@@ -515,6 +521,39 @@ static int drop_stash(int argc, const char **argv, const char *prefix)
 	return ret;
 }
 
+static int pop_stash(int argc, const char **argv, const char *prefix)
+{
+	int index = 0, ret;
+	struct stash_info info;
+	struct option options[] = {
+		OPT__QUIET(&quiet, N_("be quiet, only report errors")),
+		OPT_BOOL(0, "index", &index,
+			N_("attempt to recreate the index")),
+		OPT_END()
+	};
+
+	argc = parse_options(argc, argv, prefix, options,
+			git_stash_helper_pop_usage, 0);
+
+	if (get_stash_info(&info, argc, argv))
+		return -1;
+
+	if (assert_stash_ref(&info)) {
+		free_stash_info(&info);
+		return -1;
+	}
+
+	if (do_apply_stash(prefix, &info, index)) {
+		printf_ln(_("The stash entry is kept in case you need it again."));
+		free_stash_info(&info);
+		return -1;
+	}
+
+	ret = do_drop_stash(prefix, &info);
+	free_stash_info(&info);
+	return ret;
+}
+
 static int branch_stash(int argc, const char **argv, const char *prefix)
 {
 	const char *branch = NULL;
@@ -580,6 +619,8 @@ int cmd_stash__helper(int argc, const char **argv, const char *prefix)
 		result = clear_stash(argc, argv, prefix);
 	else if (!strcmp(argv[0], "drop"))
 		result = drop_stash(argc, argv, prefix);
+	else if (!strcmp(argv[0], "pop"))
+		result = pop_stash(argc, argv, prefix);
 	else if (!strcmp(argv[0], "branch"))
 		result = branch_stash(argc, argv, prefix);
 	else {
diff --git a/git-stash.sh b/git-stash.sh
index c5fd4c6c4..8f2640fe9 100755
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -554,50 +554,6 @@ assert_stash_like() {
 	}
 }
 
-is_stash_ref() {
-	is_stash_like "$@" && test -n "$IS_STASH_REF"
-}
-
-assert_stash_ref() {
-	is_stash_ref "$@" || {
-		args="$*"
-		die "$(eval_gettext "'\$args' is not a stash reference")"
-	}
-}
-
-apply_stash () {
-	cd "$START_DIR"
-	git stash--helper apply "$@"
-	res=$?
-	cd_to_toplevel
-	return $res
-}
-
-pop_stash() {
-	assert_stash_ref "$@"
-
-	if apply_stash "$@"
-	then
-		drop_stash "$@"
-	else
-		status=$?
-		say "$(gettext "The stash entry is kept in case you need it again.")"
-		exit $status
-	fi
-}
-
-drop_stash () {
-	assert_stash_ref "$@"
-
-	git reflog delete --updateref --rewrite "${REV}" &&
-		say "$(eval_gettext "Dropped \${REV} (\$s)")" ||
-		die "$(eval_gettext "\${REV}: Could not drop stash entry")"
-
-	# clear_stash if we just dropped the last stash entry
-	git rev-parse --verify --quiet "$ref_stash@{0}" >/dev/null ||
-	clear_stash
-}
-
 test "$1" = "-p" && set "push" "$@"
 
 PARSE_CACHE='--not-parsed'
@@ -634,7 +590,8 @@ push)
 	;;
 apply)
 	shift
-	apply_stash "$@"
+	cd "$START_DIR"
+	git stash--helper apply "$@"
 	;;
 clear)
 	shift
@@ -654,7 +611,8 @@ drop)
 	;;
 pop)
 	shift
-	pop_stash "$@"
+	cd "$START_DIR"
+	git stash--helper pop "$@"
 	;;
 branch)
 	shift
-- 
2.16.2