Function bad_to_remove_submodule

submodule.c:2003–2057

* Check if it is a bad idea to remove a submodule, i.e. if we'd lose data * when doing so. * * Return 1 if we'd lose data, return 0 if the removal is fine, * and negative values for errors. */

 * and negative values for errors.
 */
int bad_to_remove_submodule(const char *path, unsigned flags)
{
	ssize_t len;
	struct child_process cp = CHILD_PROCESS_INIT;
	struct strbuf buf = STRBUF_INIT;
	int ret = 0;

	if (validate_submodule_path(path) < 0)
		exit(128);

	if (!file_exists(path) || is_empty_dir(path))
		return 0;

	if (!submodule_uses_gitfile(path))
		return 1;

	strvec_pushl(&cp.args, "status", "--porcelain",
		     "--ignore-submodules=none", NULL);

	if (flags & SUBMODULE_REMOVAL_IGNORE_UNTRACKED)
		strvec_push(&cp.args, "-uno");
	else
		strvec_push(&cp.args, "-uall");

	if (!(flags & SUBMODULE_REMOVAL_IGNORE_IGNORED_UNTRACKED))
		strvec_push(&cp.args, "--ignored");

	prepare_submodule_repo_env(&cp.env);
	cp.git_cmd = 1;
	cp.no_stdin = 1;
	cp.out = -1;
	cp.dir = path;
	if (start_command(&cp)) {
		if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR)
			die(_("could not start 'git status' in submodule '%s'"),
				path);
		ret = -1;
		goto out;
	}

	len = strbuf_read(&buf, cp.out, 1024);
	if (len > 2)
		ret = 1;
	close(cp.out);

	if (finish_command(&cp)) {
		if (flags & SUBMODULE_REMOVAL_DIE_ON_ERROR)
			die(_("could not run 'git status' in submodule '%s'"),
				path);
		ret = -1;
	}
out:
	strbuf_release(&buf);
	return ret;
}

void submodule_unset_core_worktree(const struct submodule *sub)
{