Function init_submodule

builtin/submodule--helper.c:573–656

}

static void init_submodule(const char *path, const char *prefix,
			   const char *super_prefix,
			   unsigned int flags)
{
	const struct submodule *sub;
	struct strbuf sb = STRBUF_INIT;
	const char *upd;
	char *url = NULL, *displaypath;

	displaypath = get_submodule_displaypath(path, prefix, super_prefix);

	sub = submodule_from_path(the_repository, null_oid(the_hash_algo), path);

	if (!sub)
		die(_("No url found for submodule path '%s' in .gitmodules"),
			displaypath);

	/*
	 * NEEDSWORK: In a multi-working-tree world, this needs to be
	 * set in the per-worktree config.
	 *
	 * Set active flag for the submodule being initialized
	 */
	if (!is_submodule_active(the_repository, path)) {
		strbuf_addf(&sb, "submodule.%s.active", sub->name);
		repo_config_set_gently(the_repository, sb.buf, "true");
		strbuf_reset(&sb);
	}

	/*
	 * Copy url setting when it is not set yet.
	 * To look up the url in .git/config, we must not fall back to
	 * .gitmodules, so look it up directly.
	 */
	strbuf_addf(&sb, "submodule.%s.url", sub->name);
	if (repo_config_get_string(the_repository, sb.buf, &url)) {
		if (!sub->url)
			die(_("No url found for submodule path '%s' in .gitmodules"),
				displaypath);

		url = xstrdup(sub->url);

		/* Possibly a url relative to parent */
		if (starts_with_dot_dot_slash(url) ||
		    starts_with_dot_slash(url)) {
			char *oldurl = url;

			url = resolve_relative_url(oldurl, NULL, 0);
			free(oldurl);
		}

		if (repo_config_set_gently(the_repository, sb.buf, url))
			die(_("Failed to register url for submodule path '%s'"),
			    displaypath);
		if (!(flags & OPT_QUIET))
			fprintf(stderr,
				_("Submodule '%s' (%s) registered for path '%s'\n"),
				sub->name, url, displaypath);