builtin-remote: split show_or_prune() in two separate functions

This allow us to add different features to each of them and keep the
code simple at the same time. Also create a get_remote_ref_states()
to avoid duplicated code.
Signed-off-by: NOlivier Marin <dkr@freesurf.fr>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

builtin-remote.c

@@ -419,7 +419,32 @@ static void show_list(const char *title, struct path_list *list)
 	printf("\n");
 }
 
-static int show_or_prune(int argc, const char **argv, int prune)
+static int get_remote_ref_states(const char *name,
+				 struct ref_states *states,
+				 int query)
+{
+	struct transport *transport;
+	const struct ref *ref;
+
+	states->remote = remote_get(name);
+	if (!states->remote)
+		return error("No such remote: %s", name);
+
+	read_branches();
+
+	if (query) {
+		transport = transport_get(NULL, states->remote->url_nr > 0 ?
+			states->remote->url[0] : NULL);
+		ref = transport_get_remote_refs(transport);
+		transport_disconnect(transport);
+
+		get_ref_states(ref, states);
+	}
+
+	return 0;
+}
+
+static int show(int argc, const char **argv)
 {
 	int no_query = 0, result = 0;
 	struct option options[] = {
@@ -431,42 +456,15 @@ static int show_or_prune(int argc, const char **argv, int prune)
 
 	argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 
-	if (argc < 1) {
-		if (!prune)
-			return show_all();
-		usage_with_options(builtin_remote_usage, options);
-	}
+	if (argc < 1)
+		return show_all();
 
 	memset(&states, 0, sizeof(states));
 	for (; argc; argc--, argv++) {
-		struct transport *transport;
-		const struct ref *ref;
 		struct strbuf buf;
 		int i;
 
-		states.remote = remote_get(*argv);
-		if (!states.remote)
-			return error("No such remote: %s", *argv);
-
-		read_branches();
-
-		if (!no_query) {
-			transport = transport_get(NULL,
-				states.remote->url_nr > 0 ?
-				states.remote->url[0] : NULL);
-			ref = transport_get_remote_refs(transport);
-			transport_disconnect(transport);
-
-			get_ref_states(ref, &states);
-		}
-
-		if (prune) {
-			for (i = 0; i < states.stale.nr; i++) {
-				const char *refname = states.stale.items[i].util;
-				result |= delete_ref(refname, NULL);
-			}
-			goto cleanup_states;
-		}
+		get_remote_ref_states(*argv, &states, !no_query);
 
 		printf("* remote %s\n  URL: %s\n", *argv,
 			states.remote->url_nr > 0 ?
@@ -513,7 +511,42 @@ static int show_or_prune(int argc, const char **argv, int prune)
 			}
 			printf("\n");
 		}
-cleanup_states:
+
+		/* NEEDSWORK: free remote */
+		path_list_clear(&states.new, 0);
+		path_list_clear(&states.stale, 0);
+		path_list_clear(&states.tracked, 0);
+	}
+
+	return result;
+}
+
+static int prune(int argc, const char **argv)
+{
+	int no_query = 0, result = 0;
+	struct option options[] = {
+		OPT_GROUP("prune specific options"),
+		OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
+		OPT_END()
+	};
+	struct ref_states states;
+
+	argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
+
+	if (argc < 1)
+		usage_with_options(builtin_remote_usage, options);
+
+	memset(&states, 0, sizeof(states));
+	for (; argc; argc--, argv++) {
+		int i;
+
+		get_remote_ref_states(*argv, &states, !no_query);
+
+		for (i = 0; i < states.stale.nr; i++) {
+			const char *refname = states.stale.items[i].util;
+			result |= delete_ref(refname, NULL);
+		}
+
 		/* NEEDSWORK: free remote */
 		path_list_clear(&states.new, 0);
 		path_list_clear(&states.stale, 0);
@@ -634,9 +667,9 @@ int cmd_remote(int argc, const char **argv, const char *prefix)
 	else if (!strcmp(argv[0], "rm"))
 		result = rm(argc, argv);
 	else if (!strcmp(argv[0], "show"))
-		result = show_or_prune(argc, argv, 0);
+		result = show(argc, argv);
 	else if (!strcmp(argv[0], "prune"))
-		result = show_or_prune(argc, argv, 1);
+		result = prune(argc, argv);
 	else if (!strcmp(argv[0], "update"))
 		result = update(argc, argv);
 	else {