diff options
Diffstat (limited to 'builtin/worktree.c')
| -rw-r--r-- | builtin/worktree.c | 987 |
1 files changed, 987 insertions, 0 deletions
diff --git a/builtin/worktree.c b/builtin/worktree.c new file mode 100644 index 000000000000..a5bb02b2076a --- /dev/null +++ b/builtin/worktree.c @@ -0,0 +1,987 @@ +#include "cache.h" +#include "checkout.h" +#include "config.h" +#include "builtin.h" +#include "dir.h" +#include "parse-options.h" +#include "argv-array.h" +#include "branch.h" +#include "refs.h" +#include "run-command.h" +#include "sigchain.h" +#include "submodule.h" +#include "refs.h" +#include "utf8.h" +#include "worktree.h" + +static const char * const worktree_usage[] = { + N_("git worktree add [<options>] <path> [<commit-ish>]"), + N_("git worktree list [<options>]"), + N_("git worktree lock [<options>] <path>"), + N_("git worktree move <worktree> <new-path>"), + N_("git worktree prune [<options>]"), + N_("git worktree remove [<options>] <worktree>"), + N_("git worktree unlock <path>"), + NULL +}; + +struct add_opts { + int force; + int detach; + int quiet; + int checkout; + int keep_locked; +}; + +static int show_only; +static int verbose; +static int guess_remote; +static timestamp_t expire; + +static int git_worktree_config(const char *var, const char *value, void *cb) +{ + if (!strcmp(var, "worktree.guessremote")) { + guess_remote = git_config_bool(var, value); + return 0; + } + + return git_default_config(var, value, cb); +} + +static int delete_git_dir(const char *id) +{ + struct strbuf sb = STRBUF_INIT; + int ret; + + strbuf_addstr(&sb, git_common_path("worktrees/%s", id)); + ret = remove_dir_recursively(&sb, 0); + if (ret < 0 && errno == ENOTDIR) + ret = unlink(sb.buf); + if (ret) + error_errno(_("failed to delete '%s'"), sb.buf); + strbuf_release(&sb); + return ret; +} + +static void delete_worktrees_dir_if_empty(void) +{ + rmdir(git_path("worktrees")); /* ignore failed removal */ +} + +static int prune_worktree(const char *id, struct strbuf *reason) +{ + struct stat st; + char *path; + int fd; + size_t len; + ssize_t read_result; + + if (!is_directory(git_path("worktrees/%s", id))) { + strbuf_addf(reason, _("Removing worktrees/%s: not a valid directory"), id); + return 1; + } + if (file_exists(git_path("worktrees/%s/locked", id))) + return 0; + if (stat(git_path("worktrees/%s/gitdir", id), &st)) { + strbuf_addf(reason, _("Removing worktrees/%s: gitdir file does not exist"), id); + return 1; + } + fd = open(git_path("worktrees/%s/gitdir", id), O_RDONLY); + if (fd < 0) { + strbuf_addf(reason, _("Removing worktrees/%s: unable to read gitdir file (%s)"), + id, strerror(errno)); + return 1; + } + len = xsize_t(st.st_size); + path = xmallocz(len); + + read_result = read_in_full(fd, path, len); + if (read_result < 0) { + strbuf_addf(reason, _("Removing worktrees/%s: unable to read gitdir file (%s)"), + id, strerror(errno)); + close(fd); + free(path); + return 1; + } + close(fd); + + if (read_result != len) { + strbuf_addf(reason, + _("Removing worktrees/%s: short read (expected %"PRIuMAX" bytes, read %"PRIuMAX")"), + id, (uintmax_t)len, (uintmax_t)read_result); + free(path); + return 1; + } + while (len && (path[len - 1] == '\n' || path[len - 1] == '\r')) + len--; + if (!len) { + strbuf_addf(reason, _("Removing worktrees/%s: invalid gitdir file"), id); + free(path); + return 1; + } + path[len] = '\0'; + if (!file_exists(path)) { + free(path); + if (stat(git_path("worktrees/%s/index", id), &st) || + st.st_mtime <= expire) { + strbuf_addf(reason, _("Removing worktrees/%s: gitdir file points to non-existent location"), id); + return 1; + } else { + return 0; + } + } + free(path); + return 0; +} + +static void prune_worktrees(void) +{ + struct strbuf reason = STRBUF_INIT; + DIR *dir = opendir(git_path("worktrees")); + struct dirent *d; + if (!dir) + return; + while ((d = readdir(dir)) != NULL) { + if (is_dot_or_dotdot(d->d_name)) + continue; + strbuf_reset(&reason); + if (!prune_worktree(d->d_name, &reason)) + continue; + if (show_only || verbose) + printf("%s\n", reason.buf); + if (show_only) + continue; + delete_git_dir(d->d_name); + } + closedir(dir); + if (!show_only) + delete_worktrees_dir_if_empty(); + strbuf_release(&reason); +} + +static int prune(int ac, const char **av, const char *prefix) +{ + struct option options[] = { + OPT__DRY_RUN(&show_only, N_("do not remove, show only")), + OPT__VERBOSE(&verbose, N_("report pruned working trees")), + OPT_EXPIRY_DATE(0, "expire", &expire, + N_("expire working trees older than <time>")), + OPT_END() + }; + + expire = TIME_MAX; + ac = parse_options(ac, av, prefix, options, worktree_usage, 0); + if (ac) + usage_with_options(worktree_usage, options); + prune_worktrees(); + return 0; +} + +static char *junk_work_tree; +static char *junk_git_dir; +static int is_junk; +static pid_t junk_pid; + +static void remove_junk(void) +{ + struct strbuf sb = STRBUF_INIT; + if (!is_junk || getpid() != junk_pid) + return; + if (junk_git_dir) { + strbuf_addstr(&sb, junk_git_dir); + remove_dir_recursively(&sb, 0); + strbuf_reset(&sb); + } + if (junk_work_tree) { + strbuf_addstr(&sb, junk_work_tree); + remove_dir_recursively(&sb, 0); + } + strbuf_release(&sb); +} + +static void remove_junk_on_signal(int signo) +{ + remove_junk(); + sigchain_pop(signo); + raise(signo); +} + +static const char *worktree_basename(const char *path, int *olen) +{ + const char *name; + int len; + + len = strlen(path); + while (len && is_dir_sep(path[len - 1])) + len--; + + for (name = path + len - 1; name > path; name--) + if (is_dir_sep(*name)) { + name++; + break; + } + + *olen = len; + return name; +} + +static void validate_worktree_add(const char *path, const struct add_opts *opts) +{ + struct worktree **worktrees; + struct worktree *wt; + int locked; + + if (file_exists(path) && !is_empty_dir(path)) + die(_("'%s' already exists"), path); + + worktrees = get_worktrees(0); + /* + * find_worktree()'s suffix matching may undesirably find the main + * rather than a linked worktree (for instance, when the basenames + * of the main worktree and the one being created are the same). + * We're only interested in linked worktrees, so skip the main + * worktree with +1. + */ + wt = find_worktree(worktrees + 1, NULL, path); + if (!wt) + goto done; + + locked = !!worktree_lock_reason(wt); + if ((!locked && opts->force) || (locked && opts->force > 1)) { + if (delete_git_dir(wt->id)) + die(_("unable to re-add worktree '%s'"), path); + goto done; + } + + if (locked) + die(_("'%s' is a missing but locked worktree;\nuse 'add -f -f' to override, or 'unlock' and 'prune' or 'remove' to clear"), path); + else + die(_("'%s' is a missing but already registered worktree;\nuse 'add -f' to override, or 'prune' or 'remove' to clear"), path); + +done: + free_worktrees(worktrees); +} + +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 child_process cp = CHILD_PROCESS_INIT; + struct argv_array child_env = ARGV_ARRAY_INIT; + unsigned int counter = 0; + int len, ret; + struct strbuf symref = STRBUF_INIT; + struct commit *commit = NULL; + int is_branch = 0; + struct strbuf sb_name = STRBUF_INIT; + + validate_worktree_add(path, opts); + + /* 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); + strbuf_add(&sb, name, path + len - name); + sanitize_refname_component(sb.buf, &sb_name); + if (!sb_name.len) + BUG("How come '%s' becomes empty after sanitization?", sb.buf); + strbuf_reset(&sb); + name = sb_name.buf; + git_path_buf(&sb_repo, "worktrees/%s", 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 (mkdir(sb_repo.buf, 0777)) { + counter++; + if ((errno != EEXIST) || !counter /* overflow */) + die_errno(_("could not create directory of '%s'"), + sb_repo.buf); + 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); + + 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, "../.."); + + 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); + if (opts->quiet) + argv_array_push(&cp.args, "--quiet"); + } + + 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); + if (opts->quiet) + argv_array_push(&cp.args, "--quiet"); + 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; + cp.trace2_hook_name = "post-checkout"; + 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); + strbuf_release(&sb_name); + return ret; +} + +static void print_preparing_worktree_line(int detach, + const char *branch, + const char *new_branch, + int force_new_branch) +{ + if (force_new_branch) { + struct commit *commit = lookup_commit_reference_by_name(new_branch); + if (!commit) + printf_ln(_("Preparing worktree (new branch '%s')"), new_branch); + else + printf_ln(_("Preparing worktree (resetting branch '%s'; was at %s)"), + new_branch, + find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV)); + } else if (new_branch) { + printf_ln(_("Preparing worktree (new branch '%s')"), new_branch); + } else { + struct strbuf s = STRBUF_INIT; + if (!detach && !strbuf_check_branch_ref(&s, branch) && + ref_exists(s.buf)) + printf_ln(_("Preparing worktree (checking out '%s')"), + branch); + else { + struct commit *commit = lookup_commit_reference_by_name(branch); + if (!commit) + die(_("invalid reference: %s"), branch); + printf_ln(_("Preparing worktree (detached HEAD %s)"), + find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV)); + } + strbuf_release(&s); + } +} + +static const char *dwim_branch(const char *path, const char **new_branch) +{ + int n; + const char *s = worktree_basename(path, &n); + const char *branchname = xstrndup(s, n); + struct strbuf ref = STRBUF_INIT; + + UNLEAK(branchname); + if (!strbuf_check_branch_ref(&ref, branchname) && + ref_exists(ref.buf)) { + strbuf_release(&ref); + return branchname; + } + + *new_branch = branchname; + if (guess_remote) { + struct object_id oid; + const char *remote = + unique_tracking_name(*new_branch, &oid, NULL); + return remote; + } + return NULL; +} + +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 *new_branch = NULL; + 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, &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__QUIET(&opts.quiet, N_("suppress progress reporting")), + 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 + !!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}"; + + if (new_branch_force) { + struct strbuf symref = STRBUF_INIT; + + new_branch = new_branch_force; + + if (!opts.force && + !strbuf_check_branch_ref(&symref, new_branch) && + ref_exists(symref.buf)) + die_if_checked_out(symref.buf, 0); + strbuf_release(&symref); + } + + if (ac < 2 && !new_branch && !opts.detach) { + const char *s = dwim_branch(path, &new_branch); + if (s) + branch = s; + } + + if (ac == 2 && !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, NULL); + if (remote) { + new_branch = branch; + branch = remote; + } + } + } + if (!opts.quiet) + print_preparing_worktree_line(opts.detach, branch, new_branch, !!new_branch_force); + + if (new_branch) { + struct child_process cp = CHILD_PROCESS_INIT; + cp.git_cmd = 1; + argv_array_push(&cp.args, "branch"); + if (new_branch_force) + argv_array_push(&cp.args, "--force"); + if (opts.quiet) + argv_array_push(&cp.args, "--quiet"); + argv_array_push(&cp.args, 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 = 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); +} + +static void show_worktree_porcelain(struct worktree *wt) +{ + printf("worktree %s\n", wt->path); + if (wt->is_bare) + printf("bare\n"); + else { + printf("HEAD %s\n", oid_to_hex(&wt->head_oid)); + if (wt->is_detached) + printf("detached\n"); + else if (wt->head_ref) + printf("branch %s\n", wt->head_ref); + } + printf("\n"); +} + +static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len) +{ + struct strbuf sb = STRBUF_INIT; + int cur_path_len = strlen(wt->path); + int path_adj = cur_path_len - utf8_strwidth(wt->path); + + strbuf_addf(&sb, "%-*s ", 1 + path_maxlen + path_adj, wt->path); + if (wt->is_bare) + strbuf_addstr(&sb, "(bare)"); + else { + strbuf_addf(&sb, "%-*s ", abbrev_len, + find_unique_abbrev(&wt->head_oid, DEFAULT_ABBREV)); + if (wt->is_detached) + strbuf_addstr(&sb, "(detached HEAD)"); + else if (wt->head_ref) { + char *ref = shorten_unambiguous_ref(wt->head_ref, 0); + strbuf_addf(&sb, "[%s]", ref); + free(ref); + } else + strbuf_addstr(&sb, "(error)"); + } + printf("%s\n", sb.buf); + + strbuf_release(&sb); +} + +static void measure_widths(struct worktree **wt, int *abbrev, int *maxlen) +{ + int i; + + for (i = 0; wt[i]; i++) { + int sha1_len; + int path_len = strlen(wt[i]->path); + + if (path_len > *maxlen) + *maxlen = path_len; + sha1_len = strlen(find_unique_abbrev(&wt[i]->head_oid, *abbrev)); + if (sha1_len > *abbrev) + *abbrev = sha1_len; + } +} + +static int list(int ac, const char **av, const char *prefix) +{ + int porcelain = 0; + + struct option options[] = { + OPT_BOOL(0, "porcelain", &porcelain, N_("machine-readable output")), + OPT_END() + }; + + ac = parse_options(ac, av, prefix, options, worktree_usage, 0); + if (ac) + usage_with_options(worktree_usage, options); + else { + struct worktree **worktrees = get_worktrees(GWT_SORT_LINKED); + int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i; + + if (!porcelain) + measure_widths(worktrees, &abbrev, &path_maxlen); + + for (i = 0; worktrees[i]; i++) { + if (porcelain) + show_worktree_porcelain(worktrees[i]); + else + show_worktree(worktrees[i], path_maxlen, abbrev); + } + free_worktrees(worktrees); + } + return 0; +} + +static int lock_worktree(int ac, const char **av, const char *prefix) +{ + const char *reason = "", *old_reason; + struct option options[] = { + OPT_STRING(0, "reason", &reason, N_("string"), + N_("reason for locking")), + OPT_END() + }; + struct worktree **worktrees, *wt; + + ac = parse_options(ac, av, prefix, options, worktree_usage, 0); + if (ac != 1) + usage_with_options(worktree_usage, options); + + worktrees = get_worktrees(0); + wt = find_worktree(worktrees, prefix, av[0]); + if (!wt) + die(_("'%s' is not a working tree"), av[0]); + if (is_main_worktree(wt)) + die(_("The main working tree cannot be locked or unlocked")); + + old_reason = worktree_lock_reason(wt); + if (old_reason) { + if (*old_reason) + die(_("'%s' is already locked, reason: %s"), + av[0], old_reason); + die(_("'%s' is already locked"), av[0]); + } + + write_file(git_common_path("worktrees/%s/locked", wt->id), + "%s", reason); + free_worktrees(worktrees); + return 0; +} + +static int unlock_worktree(int ac, const char **av, const char *prefix) +{ + struct option options[] = { + OPT_END() + }; + struct worktree **worktrees, *wt; + int ret; + + ac = parse_options(ac, av, prefix, options, worktree_usage, 0); + if (ac != 1) + usage_with_options(worktree_usage, options); + + worktrees = get_worktrees(0); + wt = find_worktree(worktrees, prefix, av[0]); + if (!wt) + die(_("'%s' is not a working tree"), av[0]); + if (is_main_worktree(wt)) + die(_("The main working tree cannot be locked or unlocked")); + if (!worktree_lock_reason(wt)) + die(_("'%s' is not locked"), av[0]); + ret = unlink_or_warn(git_common_path("worktrees/%s/locked", wt->id)); + free_worktrees(worktrees); + return ret; +} + +static void validate_no_submodules(const struct worktree *wt) +{ + struct index_state istate = { NULL }; + struct strbuf path = STRBUF_INIT; + int i, found_submodules = 0; + + if (is_directory(worktree_git_path(wt, "modules"))) { + /* + * There could be false positives, e.g. the "modules" + * directory exists but is empty. But it's a rare case and + * this simpler check is probably good enough for now. + */ + found_submodules = 1; + } else if (read_index_from(&istate, worktree_git_path(wt, "index"), + get_worktree_git_dir(wt)) > 0) { + for (i = 0; i < istate.cache_nr; i++) { + struct cache_entry *ce = istate.cache[i]; + int err; + + if (!S_ISGITLINK(ce->ce_mode)) + continue; + + strbuf_reset(&path); + strbuf_addf(&path, "%s/%s", wt->path, ce->name); + if (!is_submodule_populated_gently(path.buf, &err)) + continue; + + found_submodules = 1; + break; + } + } + discard_index(&istate); + strbuf_release(&path); + + if (found_submodules) + die(_("working trees containing submodules cannot be moved or removed")); +} + +static int move_worktree(int ac, const char **av, const char *prefix) +{ + int force = 0; + struct option options[] = { + OPT__FORCE(&force, + N_("force move even if worktree is dirty or locked"), + PARSE_OPT_NOCOMPLETE), + OPT_END() + }; + struct worktree **worktrees, *wt; + struct strbuf dst = STRBUF_INIT; + struct strbuf errmsg = STRBUF_INIT; + const char *reason = NULL; + char *path; + + ac = parse_options(ac, av, prefix, options, worktree_usage, 0); + if (ac != 2) + usage_with_options(worktree_usage, options); + + path = prefix_filename(prefix, av[1]); + strbuf_addstr(&dst, path); + free(path); + + worktrees = get_worktrees(0); + wt = find_worktree(worktrees, prefix, av[0]); + if (!wt) + die(_("'%s' is not a working tree"), av[0]); + if (is_main_worktree(wt)) + die(_("'%s' is a main working tree"), av[0]); + if (is_directory(dst.buf)) { + const char *sep = find_last_dir_sep(wt->path); + + if (!sep) + die(_("could not figure out destination name from '%s'"), + wt->path); + strbuf_trim_trailing_dir_sep(&dst); + strbuf_addstr(&dst, sep); + } + if (file_exists(dst.buf)) + die(_("target '%s' already exists"), dst.buf); + + validate_no_submodules(wt); + + if (force < 2) + reason = worktree_lock_reason(wt); + if (reason) { + if (*reason) + die(_("cannot move a locked working tree, lock reason: %s\nuse 'move -f -f' to override or unlock first"), + reason); + die(_("cannot move a locked working tree;\nuse 'move -f -f' to override or unlock first")); + } + if (validate_worktree(wt, &errmsg, 0)) + die(_("validation failed, cannot move working tree: %s"), + errmsg.buf); + strbuf_release(&errmsg); + + if (rename(wt->path, dst.buf) == -1) + die_errno(_("failed to move '%s' to '%s'"), wt->path, dst.buf); + + update_worktree_location(wt, dst.buf); + + strbuf_release(&dst); + free_worktrees(worktrees); + return 0; +} + +/* + * Note, "git status --porcelain" is used to determine if it's safe to + * delete a whole worktree. "git status" does not ignore user + * configuration, so if a normal "git status" shows "clean" for the + * user, then it's ok to remove it. + * + * This assumption may be a bad one. We may want to ignore + * (potentially bad) user settings and only delete a worktree when + * it's absolutely safe to do so from _our_ point of view because we + * know better. + */ +static void check_clean_worktree(struct worktree *wt, + const char *original_path) +{ + struct argv_array child_env = ARGV_ARRAY_INIT; + struct child_process cp; + char buf[1]; + int ret; + + /* + * Until we sort this out, all submodules are "dirty" and + * will abort this function. + */ + validate_no_submodules(wt); + + argv_array_pushf(&child_env, "%s=%s/.git", + GIT_DIR_ENVIRONMENT, wt->path); + argv_array_pushf(&child_env, "%s=%s", + GIT_WORK_TREE_ENVIRONMENT, wt->path); + memset(&cp, 0, sizeof(cp)); + argv_array_pushl(&cp.args, "status", + "--porcelain", "--ignore-submodules=none", + NULL); + cp.env = child_env.argv; + cp.git_cmd = 1; + cp.dir = wt->path; + cp.out = -1; + ret = start_command(&cp); + if (ret) + die_errno(_("failed to run 'git status' on '%s'"), + original_path); + ret = xread(cp.out, buf, sizeof(buf)); + if (ret) + die(_("'%s' is dirty, use --force to delete it"), + original_path); + close(cp.out); + ret = finish_command(&cp); + if (ret) + die_errno(_("failed to run 'git status' on '%s', code %d"), + original_path, ret); +} + +static int delete_git_work_tree(struct worktree *wt) +{ + struct strbuf sb = STRBUF_INIT; + int ret = 0; + + strbuf_addstr(&sb, wt->path); + if (remove_dir_recursively(&sb, 0)) { + error_errno(_("failed to delete '%s'"), sb.buf); + ret = -1; + } + strbuf_release(&sb); + return ret; +} + +static int remove_worktree(int ac, const char **av, const char *prefix) +{ + int force = 0; + struct option options[] = { + OPT__FORCE(&force, + N_("force removal even if worktree is dirty or locked"), + PARSE_OPT_NOCOMPLETE), + OPT_END() + }; + struct worktree **worktrees, *wt; + struct strbuf errmsg = STRBUF_INIT; + const char *reason = NULL; + int ret = 0; + + ac = parse_options(ac, av, prefix, options, worktree_usage, 0); + if (ac != 1) + usage_with_options(worktree_usage, options); + + worktrees = get_worktrees(0); + wt = find_worktree(worktrees, prefix, av[0]); + if (!wt) + die(_("'%s' is not a working tree"), av[0]); + if (is_main_worktree(wt)) + die(_("'%s' is a main working tree"), av[0]); + if (force < 2) + reason = worktree_lock_reason(wt); + if (reason) { + if (*reason) + die(_("cannot remove a locked working tree, lock reason: %s\nuse 'remove -f -f' to override or unlock first"), + reason); + die(_("cannot remove a locked working tree;\nuse 'remove -f -f' to override or unlock first")); + } + if (validate_worktree(wt, &errmsg, WT_VALIDATE_WORKTREE_MISSING_OK)) + die(_("validation failed, cannot remove working tree: %s"), + errmsg.buf); + strbuf_release(&errmsg); + + if (file_exists(wt->path)) { + if (!force) + check_clean_worktree(wt, av[0]); + + ret |= delete_git_work_tree(wt); + } + /* + * continue on even if ret is non-zero, there's no going back + * from here. + */ + ret |= delete_git_dir(wt->id); + delete_worktrees_dir_if_empty(); + + free_worktrees(worktrees); + return ret; +} + +int cmd_worktree(int ac, const char **av, const char *prefix) +{ + struct option options[] = { + OPT_END() + }; + + git_config(git_worktree_config, NULL); + + if (ac < 2) + usage_with_options(worktree_usage, options); + if (!prefix) + prefix = ""; + if (!strcmp(av[1], "add")) + return add(ac - 1, av + 1, prefix); + if (!strcmp(av[1], "prune")) + return prune(ac - 1, av + 1, prefix); + if (!strcmp(av[1], "list")) + return list(ac - 1, av + 1, prefix); + if (!strcmp(av[1], "lock")) + return lock_worktree(ac - 1, av + 1, prefix); + if (!strcmp(av[1], "unlock")) + return unlock_worktree(ac - 1, av + 1, prefix); + if (!strcmp(av[1], "move")) + return move_worktree(ac - 1, av + 1, prefix); + if (!strcmp(av[1], "remove")) + return remove_worktree(ac - 1, av + 1, prefix); + usage_with_options(worktree_usage, options); +} |