Exemplo n.º 1
0
static void rename_branch(const char *oldname, const char *newname, int force)
{
	struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
	struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
	int recovery = 0;
	int clobber_head_ok;

	if (!oldname)
		die(_("cannot rename the current branch while not on any."));

	if (strbuf_check_branch_ref(&oldref, oldname)) {
		/*
		 * Bad name --- this could be an attempt to rename a
		 * ref that we used to allow to be created by accident.
		 */
		if (ref_exists(oldref.buf))
			recovery = 1;
		else
			die(_("Invalid branch name: '%s'"), oldname);
	}

	/*
	 * A command like "git branch -M currentbranch currentbranch" cannot
	 * cause the worktree to become inconsistent with HEAD, so allow it.
	 */
	clobber_head_ok = !strcmp(oldname, newname);

	validate_new_branchname(newname, &newref, force, clobber_head_ok);

	reject_rebase_or_bisect_branch(oldref.buf);

	strbuf_addf(&logmsg, "Branch: renamed %s to %s",
		 oldref.buf, newref.buf);

	if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
		die(_("Branch rename failed"));

	if (recovery)
		warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);

	if (replace_each_worktree_head_symref(oldref.buf, newref.buf, logmsg.buf))
		die(_("Branch renamed to %s, but HEAD is not updated!"), newname);

	strbuf_release(&logmsg);

	strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
	strbuf_release(&oldref);
	strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
	strbuf_release(&newref);
	if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
		die(_("Branch is renamed, but update of config-file failed"));
	strbuf_release(&oldsection);
	strbuf_release(&newsection);
}
Exemplo n.º 2
0
static void rename_branch(const char *oldname, const char *newname, int force)
{
	struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
	unsigned char sha1[20];
	struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
	int recovery = 0;

	if (!oldname)
		die(_("cannot rename the current branch while not on any."));

	if (strbuf_check_branch_ref(&oldref, oldname)) {
		/*
		 * Bad name --- this could be an attempt to rename a
		 * ref that we used to allow to be created by accident.
		 */
		if (resolve_ref(oldref.buf, sha1, 1, NULL))
			recovery = 1;
		else
			die(_("Invalid branch name: '%s'"), oldname);
	}

	validate_new_branchname(newname, &newref, force, 0);

	strbuf_addf(&logmsg, "Branch: renamed %s to %s",
		 oldref.buf, newref.buf);

	if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
		die(_("Branch rename failed"));
	strbuf_release(&logmsg);

	if (recovery)
		warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);

	/* no need to pass logmsg here as HEAD didn't really move */
	if (!strcmp(oldname, head) && create_symref("HEAD", newref.buf, NULL))
		die(_("Branch renamed to %s, but HEAD is not updated!"), newname);

	strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
	strbuf_release(&oldref);
	strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
	strbuf_release(&newref);
	if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
		die(_("Branch is renamed, but update of config-file failed"));
	strbuf_release(&oldsection);
	strbuf_release(&newsection);
}
Exemplo n.º 3
0
void create_branch(const char *head,
		   const char *name, const char *start_name,
		   int force, int reflog, int clobber_head,
		   int quiet, enum branch_track track)
{
	struct ref_lock *lock = NULL;
	struct commit *commit;
	unsigned char sha1[20];
	char *real_ref, msg[PATH_MAX + 20];
	struct strbuf ref = STRBUF_INIT;
	int forcing = 0;
	int dont_change_ref = 0;
	int explicit_tracking = 0;

	if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
		explicit_tracking = 1;

	if (validate_new_branchname(name, &ref, force,
				    track == BRANCH_TRACK_OVERRIDE ||
				    clobber_head)) {
		if (!force)
			dont_change_ref = 1;
		else
			forcing = 1;
	}

	real_ref = NULL;
	if (get_sha1(start_name, sha1)) {
		if (explicit_tracking) {
			if (advice_set_upstream_failure) {
				error(_(upstream_missing), start_name);
				advise(_(upstream_advice));
				exit(1);
			}
			die(_(upstream_missing), start_name);
		}
		die(_("Not a valid object name: '%s'."), start_name);
	}

	switch (dwim_ref(start_name, strlen(start_name), sha1, &real_ref)) {
	case 0:
		/* Not branching from any existing branch */
		if (explicit_tracking)
			die(_(upstream_not_branch), start_name);
		break;
	case 1:
		/* Unique completion -- good, only if it is a real branch */
		if (!starts_with(real_ref, "refs/heads/") &&
		    validate_remote_tracking_branch(real_ref)) {
			if (explicit_tracking)
				die(_(upstream_not_branch), start_name);
			else
				real_ref = NULL;
		}
		break;
	default:
		die(_("Ambiguous object name: '%s'."), start_name);
		break;
	}

	if ((commit = lookup_commit_reference(sha1)) == NULL)
		die(_("Not a valid branch point: '%s'."), start_name);
	hashcpy(sha1, commit->object.sha1);

	if (!dont_change_ref) {
		lock = lock_any_ref_for_update(ref.buf, NULL, 0, NULL);
		if (!lock)
			die_errno(_("Failed to lock ref for update"));
	}

	if (reflog)
		log_all_ref_updates = 1;

	if (forcing)
		snprintf(msg, sizeof msg, "branch: Reset to %s",
			 start_name);
	else if (!dont_change_ref)
		snprintf(msg, sizeof msg, "branch: Created from %s",
			 start_name);

	if (real_ref && track)
		setup_tracking(ref.buf + 11, real_ref, track, quiet);

	if (!dont_change_ref)
		if (write_ref_sha1(lock, sha1, msg) < 0)
			die_errno(_("Failed to write ref"));

	strbuf_release(&ref);
	free(real_ref);
}
Exemplo n.º 4
0
int cmd_checkout(int argc, const char **argv, const char *prefix)
{
	struct checkout_opts opts;
	struct branch_info new_branch_info;
	char *conflict_style = NULL;
	int dwim_new_local_branch, no_dwim_new_local_branch = 0;
	int dwim_remotes_matched = 0;
	struct option options[] = {
		OPT__QUIET(&opts.quiet, N_("suppress progress reporting")),
		OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
			   N_("create and checkout a new branch")),
		OPT_STRING('B', NULL, &opts.new_branch_force, N_("branch"),
			   N_("create/reset and checkout a branch")),
		OPT_BOOL('l', NULL, &opts.new_branch_log, N_("create reflog for new branch")),
		OPT_BOOL(0, "detach", &opts.force_detach, N_("detach HEAD at named commit")),
		OPT_SET_INT('t', "track",  &opts.track, N_("set upstream info for new branch"),
			BRANCH_TRACK_EXPLICIT),
		OPT_STRING(0, "orphan", &opts.new_orphan_branch, N_("new-branch"), N_("new unparented branch")),
		OPT_SET_INT_F('2', "ours", &opts.writeout_stage,
			      N_("checkout our version for unmerged files"),
			      2, PARSE_OPT_NONEG),
		OPT_SET_INT_F('3', "theirs", &opts.writeout_stage,
			      N_("checkout their version for unmerged files"),
			      3, PARSE_OPT_NONEG),
		OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)"),
			   PARSE_OPT_NOCOMPLETE),
		OPT_BOOL('m', "merge", &opts.merge, N_("perform a 3-way merge with the new branch")),
		OPT_BOOL_F(0, "overwrite-ignore", &opts.overwrite_ignore,
			   N_("update ignored files (default)"),
			   PARSE_OPT_NOCOMPLETE),
		OPT_STRING(0, "conflict", &conflict_style, N_("style"),
			   N_("conflict style (merge or diff3)")),
		OPT_BOOL('p', "patch", &opts.patch_mode, N_("select hunks interactively")),
		OPT_BOOL(0, "ignore-skip-worktree-bits", &opts.ignore_skipworktree,
			 N_("do not limit pathspecs to sparse entries only")),
		OPT_BOOL(0, "no-guess", &no_dwim_new_local_branch,
			 N_("do not second guess 'git checkout <no-such-branch>'")),
		OPT_BOOL(0, "ignore-other-worktrees", &opts.ignore_other_worktrees,
			 N_("do not check if another worktree is holding the given ref")),
		{ OPTION_CALLBACK, 0, "recurse-submodules", NULL,
			    "checkout", "control recursive updating of submodules",
			    PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater },
		OPT_BOOL(0, "progress", &opts.show_progress, N_("force progress reporting")),
		OPT_BOOL(0, "overlay", &opts.overlay_mode, N_("use overlay mode (default)")),
		OPT_END(),
	};

	memset(&opts, 0, sizeof(opts));
	memset(&new_branch_info, 0, sizeof(new_branch_info));
	opts.overwrite_ignore = 1;
	opts.prefix = prefix;
	opts.show_progress = -1;
	opts.overlay_mode = -1;

	git_config(git_checkout_config, &opts);

	opts.track = BRANCH_TRACK_UNSPECIFIED;

	argc = parse_options(argc, argv, prefix, options, checkout_usage,
			     PARSE_OPT_KEEP_DASHDASH);

	dwim_new_local_branch = !no_dwim_new_local_branch;
	if (opts.show_progress < 0) {
		if (opts.quiet)
			opts.show_progress = 0;
		else
			opts.show_progress = isatty(2);
	}

	if (conflict_style) {
		opts.merge = 1; /* implied */
		git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
	}

	if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1)
		die(_("-b, -B and --orphan are mutually exclusive"));

	if (opts.overlay_mode == 1 && opts.patch_mode)
		die(_("-p and --overlay are mutually exclusive"));

	/*
	 * From here on, new_branch will contain the branch to be checked out,
	 * and new_branch_force and new_orphan_branch will tell us which one of
	 * -b/-B/--orphan is being used.
	 */
	if (opts.new_branch_force)
		opts.new_branch = opts.new_branch_force;

	if (opts.new_orphan_branch)
		opts.new_branch = opts.new_orphan_branch;

	/* --track without -b/-B/--orphan should DWIM */
	if (opts.track != BRANCH_TRACK_UNSPECIFIED && !opts.new_branch) {
		const char *argv0 = argv[0];
		if (!argc || !strcmp(argv0, "--"))
			die(_("--track needs a branch name"));
		skip_prefix(argv0, "refs/", &argv0);
		skip_prefix(argv0, "remotes/", &argv0);
		argv0 = strchr(argv0, '/');
		if (!argv0 || !argv0[1])
			die(_("missing branch name; try -b"));
		opts.new_branch = argv0 + 1;
	}

	/*
	 * Extract branch name from command line arguments, so
	 * all that is left is pathspecs.
	 *
	 * Handle
	 *
	 *  1) git checkout <tree> -- [<paths>]
	 *  2) git checkout -- [<paths>]
	 *  3) git checkout <something> [<paths>]
	 *
	 * including "last branch" syntax and DWIM-ery for names of
	 * remote branches, erroring out for invalid or ambiguous cases.
	 */
	if (argc) {
		struct object_id rev;
		int dwim_ok =
			!opts.patch_mode &&
			dwim_new_local_branch &&
			opts.track == BRANCH_TRACK_UNSPECIFIED &&
			!opts.new_branch;
		int n = parse_branchname_arg(argc, argv, dwim_ok,
					     &new_branch_info, &opts, &rev,
					     &dwim_remotes_matched);
		argv += n;
		argc -= n;
	}

	if (argc) {
		parse_pathspec(&opts.pathspec, 0,
			       opts.patch_mode ? PATHSPEC_PREFIX_ORIGIN : 0,
			       prefix, argv);

		if (!opts.pathspec.nr)
			die(_("invalid path specification"));

		/*
		 * Try to give more helpful suggestion.
		 * new_branch && argc > 1 will be caught later.
		 */
		if (opts.new_branch && argc == 1)
			die(_("'%s' is not a commit and a branch '%s' cannot be created from it"),
				argv[0], opts.new_branch);

		if (opts.force_detach)
			die(_("git checkout: --detach does not take a path argument '%s'"),
			    argv[0]);

		if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge)
			die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\n"
			      "checking out of the index."));
	}

	if (opts.new_branch) {
		struct strbuf buf = STRBUF_INIT;

		if (opts.new_branch_force)
			opts.branch_exists = validate_branchname(opts.new_branch, &buf);
		else
			opts.branch_exists =
				validate_new_branchname(opts.new_branch, &buf, 0);
		strbuf_release(&buf);
	}

	UNLEAK(opts);
	if (opts.patch_mode || opts.pathspec.nr) {
		int ret = checkout_paths(&opts, new_branch_info.name);
		if (ret && dwim_remotes_matched > 1 &&
		    advice_checkout_ambiguous_remote_branch_name)
			advise(_("'%s' matched more than one remote tracking branch.\n"
				 "We found %d remotes with a reference that matched. So we fell back\n"
				 "on trying to resolve the argument as a path, but failed there too!\n"
				 "\n"
				 "If you meant to check out a remote tracking branch on, e.g. 'origin',\n"
				 "you can do so by fully qualifying the name with the --track option:\n"
				 "\n"
				 "    git checkout --track origin/<name>\n"
				 "\n"
				 "If you'd like to always have checkouts of an ambiguous <name> prefer\n"
				 "one remote, e.g. the 'origin' remote, consider setting\n"
				 "checkout.defaultRemote=origin in your config."),
			       argv[0],
			       dwim_remotes_matched);
		return ret;
	} else {
		return checkout_branch(&opts, &new_branch_info);
	}
}
Exemplo n.º 5
0
static void copy_or_rename_branch(const char *oldname, const char *newname, int copy, int force)
{
	struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
	struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
	const char *interpreted_oldname = NULL;
	const char *interpreted_newname = NULL;
	int recovery = 0;

	if (!oldname) {
		if (copy)
			die(_("cannot copy the current branch while not on any."));
		else
			die(_("cannot rename the current branch while not on any."));
	}

	if (strbuf_check_branch_ref(&oldref, oldname)) {
		/*
		 * Bad name --- this could be an attempt to rename a
		 * ref that we used to allow to be created by accident.
		 */
		if (ref_exists(oldref.buf))
			recovery = 1;
		else
			die(_("Invalid branch name: '%s'"), oldname);
	}

	/*
	 * A command like "git branch -M currentbranch currentbranch" cannot
	 * cause the worktree to become inconsistent with HEAD, so allow it.
	 */
	if (!strcmp(oldname, newname))
		validate_branchname(newname, &newref);
	else
		validate_new_branchname(newname, &newref, force);

	reject_rebase_or_bisect_branch(oldref.buf);

	if (!skip_prefix(oldref.buf, "refs/heads/", &interpreted_oldname) ||
	    !skip_prefix(newref.buf, "refs/heads/", &interpreted_newname)) {
		BUG("expected prefix missing for refs");
	}

	if (copy)
		strbuf_addf(&logmsg, "Branch: copied %s to %s",
			    oldref.buf, newref.buf);
	else
		strbuf_addf(&logmsg, "Branch: renamed %s to %s",
			    oldref.buf, newref.buf);

	if (!copy && rename_ref(oldref.buf, newref.buf, logmsg.buf))
		die(_("Branch rename failed"));
	if (copy && copy_existing_ref(oldref.buf, newref.buf, logmsg.buf))
		die(_("Branch copy failed"));

	if (recovery) {
		if (copy)
			warning(_("Created a copy of a misnamed branch '%s'"),
				interpreted_oldname);
		else
			warning(_("Renamed a misnamed branch '%s' away"),
				interpreted_oldname);
	}

	if (!copy &&
	    replace_each_worktree_head_symref(oldref.buf, newref.buf, logmsg.buf))
		die(_("Branch renamed to %s, but HEAD is not updated!"), newname);

	strbuf_release(&logmsg);

	strbuf_addf(&oldsection, "branch.%s", interpreted_oldname);
	strbuf_release(&oldref);
	strbuf_addf(&newsection, "branch.%s", interpreted_newname);
	strbuf_release(&newref);
	if (!copy && git_config_rename_section(oldsection.buf, newsection.buf) < 0)
		die(_("Branch is renamed, but update of config-file failed"));
	if (copy && strcmp(oldname, newname) && git_config_copy_section(oldsection.buf, newsection.buf) < 0)
		die(_("Branch is copied, but update of config-file failed"));
	strbuf_release(&oldsection);
	strbuf_release(&newsection);
}