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-rw-r--r--builtin/worktree.c860
1 files changed, 860 insertions, 0 deletions
diff --git a/builtin/worktree.c b/builtin/worktree.c
new file mode 100644
index 0000000000..40a438ed6c
--- /dev/null
+++ b/builtin/worktree.c
@@ -0,0 +1,860 @@
+#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 "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 checkout;
+ int keep_locked;
+ const char *new_branch;
+ int force_new_branch;
+};
+
+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 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;
+ struct strbuf path = STRBUF_INIT;
+ DIR *dir = opendir(git_path("worktrees"));
+ struct dirent *d;
+ int ret;
+ 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;
+ git_path_buf(&path, "worktrees/%s", d->d_name);
+ ret = remove_dir_recursively(&path, 0);
+ if (ret < 0 && errno == ENOTDIR)
+ ret = unlink(path.buf);
+ if (ret)
+ error_errno(_("failed to remove '%s'"), path.buf);
+ }
+ closedir(dir);
+ if (!show_only)
+ rmdir(git_path("worktrees"));
+ strbuf_release(&reason);
+ strbuf_release(&path);
+}
+
+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 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;
+}
+
+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);
+}
+
+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 = is_worktree_locked(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 (!is_worktree_locked(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 };
+ int i, found_submodules = 0;
+
+ 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];
+
+ if (S_ISGITLINK(ce->ce_mode)) {
+ found_submodules = 1;
+ break;
+ }
+ }
+ }
+ discard_index(&istate);
+
+ 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)
+{
+ struct option options[] = {
+ OPT_END()
+ };
+ struct worktree **worktrees, *wt;
+ struct strbuf dst = STRBUF_INIT;
+ struct strbuf errmsg = STRBUF_INIT;
+ const char *reason;
+ 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);
+
+ reason = is_worktree_locked(wt);
+ if (reason) {
+ if (*reason)
+ die(_("cannot move a locked working tree, lock reason: %s"),
+ reason);
+ die(_("cannot move a locked working tree"));
+ }
+ 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 delete_git_dir(struct worktree *wt)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int ret = 0;
+
+ strbuf_addstr(&sb, git_common_path("worktrees/%s", wt->id));
+ 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_BOOL(0, "force", &force,
+ N_("force removing even if the worktree is dirty")),
+ OPT_END()
+ };
+ struct worktree **worktrees, *wt;
+ struct strbuf errmsg = STRBUF_INIT;
+ const char *reason;
+ 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]);
+ reason = is_worktree_locked(wt);
+ if (reason) {
+ if (*reason)
+ die(_("cannot remove a locked working tree, lock reason: %s"),
+ reason);
+ die(_("cannot remove a locked working tree"));
+ }
+ 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);
+
+ 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);
+}