1 files changed, 65 insertions, 1 deletions

diff --git a/submodule.c b/submodule.c
index 91a4758747..4d9b774cd1 100644
--- a/submodule.c
+++ b/submodule.c
@@ -63,7 +63,7 @@ void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt,
 	}
 }
 
-static int submodule_config(const char *var, const char *value, void *cb)
+int submodule_config(const char *var, const char *value, void *cb)
 {
 	if (!prefixcmp(var, "submodule."))
 		return parse_submodule_config_option(var, value);
@@ -229,6 +229,70 @@ void show_submodule_summary(FILE *f, const char *path,
 	strbuf_release(&sb);
 }
 
+int fetch_populated_submodules(int num_options, const char **options,
+			       const char *prefix, int quiet)
+{
+	int i, result = 0, argc = 0;
+	struct child_process cp;
+	const char **argv;
+	struct string_list_item *name_for_path;
+	const char *work_tree = get_git_work_tree();
+	if (!work_tree)
+		return 0;
+
+	if (!the_index.initialized)
+		if (read_cache() < 0)
+			die("index file corrupt");
+
+	argv = xcalloc(num_options + 5, sizeof(const char *));
+	argv[argc++] = "fetch";
+	for (i = 0; i < num_options; i++)
+		argv[argc++] = options[i];
+	argv[argc++] = "--submodule-prefix";
+
+	memset(&cp, 0, sizeof(cp));
+	cp.argv = argv;
+	cp.env = local_repo_env;
+	cp.git_cmd = 1;
+	cp.no_stdin = 1;
+
+	for (i = 0; i < active_nr; i++) {
+		struct strbuf submodule_path = STRBUF_INIT;
+		struct strbuf submodule_git_dir = STRBUF_INIT;
+		struct strbuf submodule_prefix = STRBUF_INIT;
+		struct cache_entry *ce = active_cache[i];
+		const char *git_dir, *name;
+
+		if (!S_ISGITLINK(ce->ce_mode))
+			continue;
+
+		name = ce->name;
+		name_for_path = unsorted_string_list_lookup(&config_name_for_path, ce->name);
+		if (name_for_path)
+			name = name_for_path->util;
+
+		strbuf_addf(&submodule_path, "%s/%s", work_tree, ce->name);
+		strbuf_addf(&submodule_git_dir, "%s/.git", submodule_path.buf);
+		strbuf_addf(&submodule_prefix, "%s%s/", prefix, ce->name);
+		git_dir = read_gitfile_gently(submodule_git_dir.buf);
+		if (!git_dir)
+			git_dir = submodule_git_dir.buf;
+		if (is_directory(git_dir)) {
+			if (!quiet)
+				printf("Fetching submodule %s%s\n", prefix, ce->name);
+			cp.dir = submodule_path.buf;
+			argv[argc] = submodule_prefix.buf;
+			if (run_command(&cp))
+				result = 1;
+		}
+		strbuf_release(&submodule_path);
+		strbuf_release(&submodule_git_dir);
+		strbuf_release(&submodule_prefix);
+	}
+	free(argv);
+	return result;
+}
+
 unsigned is_submodule_modified(const char *path, int ignore_untracked)
 {
 	ssize_t len;