Example #1
0
static int add_worktree(const char *path, const char *refname,
			const struct add_opts *opts)
{
	struct strbuf sb_git = STRBUF_INIT, sb_repo = STRBUF_INIT;
	struct strbuf sb = STRBUF_INIT;
	const char *name;
	struct stat st;
	struct child_process cp = CHILD_PROCESS_INIT;
	struct argv_array child_env = ARGV_ARRAY_INIT;
	int counter = 0, len, ret;
	struct strbuf symref = STRBUF_INIT;
	struct commit *commit = NULL;
	int is_branch = 0;

	if (file_exists(path) && !is_empty_dir(path))
		die(_("'%s' already exists"), path);

	/* is 'refname' a branch or commit? */
	if (!opts->detach && !strbuf_check_branch_ref(&symref, refname) &&
	    ref_exists(symref.buf)) {
		is_branch = 1;
		if (!opts->force)
			die_if_checked_out(symref.buf, 0);
	}
	commit = lookup_commit_reference_by_name(refname);
	if (!commit)
		die(_("invalid reference: %s"), refname);

	name = worktree_basename(path, &len);
	git_path_buf(&sb_repo, "worktrees/%.*s", (int)(path + len - name), name);
	len = sb_repo.len;
	if (safe_create_leading_directories_const(sb_repo.buf))
		die_errno(_("could not create leading directories of '%s'"),
			  sb_repo.buf);
	while (!stat(sb_repo.buf, &st)) {
		counter++;
		strbuf_setlen(&sb_repo, len);
		strbuf_addf(&sb_repo, "%d", counter);
	}
	name = strrchr(sb_repo.buf, '/') + 1;

	junk_pid = getpid();
	atexit(remove_junk);
	sigchain_push_common(remove_junk_on_signal);

	if (mkdir(sb_repo.buf, 0777))
		die_errno(_("could not create directory of '%s'"), sb_repo.buf);
	junk_git_dir = xstrdup(sb_repo.buf);
	is_junk = 1;

	/*
	 * lock the incomplete repo so prune won't delete it, unlock
	 * after the preparation is over.
	 */
	strbuf_addf(&sb, "%s/locked", sb_repo.buf);
	if (!opts->keep_locked)
		write_file(sb.buf, "initializing");
	else
		write_file(sb.buf, "added with --lock");

	strbuf_addf(&sb_git, "%s/.git", path);
	if (safe_create_leading_directories_const(sb_git.buf))
		die_errno(_("could not create leading directories of '%s'"),
			  sb_git.buf);
	junk_work_tree = xstrdup(path);

	strbuf_reset(&sb);
	strbuf_addf(&sb, "%s/gitdir", sb_repo.buf);
	write_file(sb.buf, "%s", real_path(sb_git.buf));
	write_file(sb_git.buf, "gitdir: %s/worktrees/%s",
		   real_path(get_git_common_dir()), name);
	/*
	 * This is to keep resolve_ref() happy. We need a valid HEAD
	 * or is_git_directory() will reject the directory. Any value which
	 * looks like an object ID will do since it will be immediately
	 * replaced by the symbolic-ref or update-ref invocation in the new
	 * worktree.
	 */
	strbuf_reset(&sb);
	strbuf_addf(&sb, "%s/HEAD", sb_repo.buf);
	write_file(sb.buf, "%s", sha1_to_hex(null_sha1));
	strbuf_reset(&sb);
	strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
	write_file(sb.buf, "../..");

	fprintf_ln(stderr, _("Preparing %s (identifier %s)"), path, name);

	argv_array_pushf(&child_env, "%s=%s", GIT_DIR_ENVIRONMENT, sb_git.buf);
	argv_array_pushf(&child_env, "%s=%s", GIT_WORK_TREE_ENVIRONMENT, path);
	cp.git_cmd = 1;

	if (!is_branch)
		argv_array_pushl(&cp.args, "update-ref", "HEAD",
				 oid_to_hex(&commit->object.oid), NULL);
	else
		argv_array_pushl(&cp.args, "symbolic-ref", "HEAD",
				 symref.buf, NULL);
	cp.env = child_env.argv;
	ret = run_command(&cp);
	if (ret)
		goto done;

	if (opts->checkout) {
		cp.argv = NULL;
		argv_array_clear(&cp.args);
		argv_array_pushl(&cp.args, "reset", "--hard", NULL);
		cp.env = child_env.argv;
		ret = run_command(&cp);
		if (ret)
			goto done;
	}

	is_junk = 0;
	FREE_AND_NULL(junk_work_tree);
	FREE_AND_NULL(junk_git_dir);

done:
	if (ret || !opts->keep_locked) {
		strbuf_reset(&sb);
		strbuf_addf(&sb, "%s/locked", sb_repo.buf);
		unlink_or_warn(sb.buf);
	}

	/*
	 * Hook failure does not warrant worktree deletion, so run hook after
	 * is_junk is cleared, but do return appropriate code when hook fails.
	 */
	if (!ret && opts->checkout) {
		const char *hook = find_hook("post-checkout");
		if (hook) {
			const char *env[] = { "GIT_DIR", "GIT_WORK_TREE", NULL };
			cp.git_cmd = 0;
			cp.no_stdin = 1;
			cp.stdout_to_stderr = 1;
			cp.dir = path;
			cp.env = env;
			cp.argv = NULL;
			argv_array_pushl(&cp.args, absolute_path(hook),
					 oid_to_hex(&null_oid),
					 oid_to_hex(&commit->object.oid),
					 "1", NULL);
			ret = run_command(&cp);
		}
	}

	argv_array_clear(&child_env);
	strbuf_release(&sb);
	strbuf_release(&symref);
	strbuf_release(&sb_repo);
	strbuf_release(&sb_git);
	return ret;
}
Example #2
0
static int add(int ac, const char **av, const char *prefix)
{
	struct add_opts opts;
	const char *new_branch_force = NULL;
	char *path;
	const char *branch;
	const char *opt_track = NULL;
	struct option options[] = {
		OPT__FORCE(&opts.force,
			   N_("checkout <branch> even if already checked out in other worktree"),
			   PARSE_OPT_NOCOMPLETE),
		OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
			   N_("create a new branch")),
		OPT_STRING('B', NULL, &new_branch_force, N_("branch"),
			   N_("create or reset a branch")),
		OPT_BOOL(0, "detach", &opts.detach, N_("detach HEAD at named commit")),
		OPT_BOOL(0, "checkout", &opts.checkout, N_("populate the new working tree")),
		OPT_BOOL(0, "lock", &opts.keep_locked, N_("keep the new working tree locked")),
		OPT_PASSTHRU(0, "track", &opt_track, NULL,
			     N_("set up tracking mode (see git-branch(1))"),
			     PARSE_OPT_NOARG | PARSE_OPT_OPTARG),
		OPT_BOOL(0, "guess-remote", &guess_remote,
			 N_("try to match the new branch name with a remote-tracking branch")),
		OPT_END()
	};

	memset(&opts, 0, sizeof(opts));
	opts.checkout = 1;
	ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
	if (!!opts.detach + !!opts.new_branch + !!new_branch_force > 1)
		die(_("-b, -B, and --detach are mutually exclusive"));
	if (ac < 1 || ac > 2)
		usage_with_options(worktree_usage, options);

	path = prefix_filename(prefix, av[0]);
	branch = ac < 2 ? "HEAD" : av[1];

	if (!strcmp(branch, "-"))
		branch = "@{-1}";

	opts.force_new_branch = !!new_branch_force;
	if (opts.force_new_branch) {
		struct strbuf symref = STRBUF_INIT;

		opts.new_branch = new_branch_force;

		if (!opts.force &&
		    !strbuf_check_branch_ref(&symref, opts.new_branch) &&
		    ref_exists(symref.buf))
			die_if_checked_out(symref.buf, 0);
		strbuf_release(&symref);
	}

	if (ac < 2 && !opts.new_branch && !opts.detach) {
		int n;
		const char *s = worktree_basename(path, &n);
		opts.new_branch = xstrndup(s, n);
		if (guess_remote) {
			struct object_id oid;
			const char *remote =
				unique_tracking_name(opts.new_branch, &oid);
			if (remote)
				branch = remote;
		}
	}

	if (ac == 2 && !opts.new_branch && !opts.detach) {
		struct object_id oid;
		struct commit *commit;
		const char *remote;

		commit = lookup_commit_reference_by_name(branch);
		if (!commit) {
			remote = unique_tracking_name(branch, &oid);
			if (remote) {
				opts.new_branch = branch;
				branch = remote;
			}
		}
	}

	if (opts.new_branch) {
		struct child_process cp = CHILD_PROCESS_INIT;
		cp.git_cmd = 1;
		argv_array_push(&cp.args, "branch");
		if (opts.force_new_branch)
			argv_array_push(&cp.args, "--force");
		argv_array_push(&cp.args, opts.new_branch);
		argv_array_push(&cp.args, branch);
		if (opt_track)
			argv_array_push(&cp.args, opt_track);
		if (run_command(&cp))
			return -1;
		branch = opts.new_branch;
	} else if (opt_track) {
		die(_("--[no-]track can only be used if a new branch is created"));
	}

	UNLEAK(path);
	UNLEAK(opts);
	return add_worktree(path, branch, &opts);
}
Example #3
0
File: worktree.c Project: 1tgr/git
static int add(int ac, const char **av, const char *prefix)
{
	struct add_opts opts;
	const char *new_branch_force = NULL;
	const char *path, *branch;
	struct option options[] = {
		OPT__FORCE(&opts.force, N_("checkout <branch> even if already checked out in other worktree")),
		OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
			   N_("create a new branch")),
		OPT_STRING('B', NULL, &new_branch_force, N_("branch"),
			   N_("create or reset a branch")),
		OPT_BOOL(0, "detach", &opts.detach, N_("detach HEAD at named commit")),
		OPT_BOOL(0, "checkout", &opts.checkout, N_("populate the new working tree")),
		OPT_END()
	};

	memset(&opts, 0, sizeof(opts));
	opts.checkout = 1;
	ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
	if (!!opts.detach + !!opts.new_branch + !!new_branch_force > 1)
		die(_("-b, -B, and --detach are mutually exclusive"));
	if (ac < 1 || ac > 2)
		usage_with_options(worktree_usage, options);

	path = prefix_filename(prefix, strlen(prefix), av[0]);
	branch = ac < 2 ? "HEAD" : av[1];

	if (!strcmp(branch, "-"))
		branch = "@{-1}";

	opts.force_new_branch = !!new_branch_force;
	if (opts.force_new_branch) {
		struct strbuf symref = STRBUF_INIT;

		opts.new_branch = new_branch_force;

		if (!opts.force &&
		    !strbuf_check_branch_ref(&symref, opts.new_branch) &&
		    ref_exists(symref.buf))
			die_if_checked_out(symref.buf, 0);
		strbuf_release(&symref);
	}

	if (ac < 2 && !opts.new_branch && !opts.detach) {
		int n;
		const char *s = worktree_basename(path, &n);
		opts.new_branch = xstrndup(s, n);
	}

	if (opts.new_branch) {
		struct child_process cp;
		memset(&cp, 0, sizeof(cp));
		cp.git_cmd = 1;
		argv_array_push(&cp.args, "branch");
		if (opts.force_new_branch)
			argv_array_push(&cp.args, "--force");
		argv_array_push(&cp.args, opts.new_branch);
		argv_array_push(&cp.args, branch);
		if (run_command(&cp))
			return -1;
		branch = opts.new_branch;
	}

	return add_worktree(path, branch, &opts);
}