8 void free_worktrees(struct worktree **worktrees)
12 for (i = 0; worktrees[i]; i++) {
13 free(worktrees[i]->path);
14 free(worktrees[i]->id);
15 free(worktrees[i]->head_ref);
16 free(worktrees[i]->lock_reason);
23 * read 'path_to_ref' into 'ref'. Also if is_detached is not NULL,
24 * set is_detached to 1 (0) if the ref is detached (is not detached).
26 * $GIT_COMMON_DIR/$symref (e.g. HEAD) is practically outside $GIT_DIR so
27 * for linked worktrees, `resolve_ref_unsafe()` won't work (it uses
28 * git_path). Parse the ref ourselves.
30 * return -1 if the ref is not a proper ref, 0 otherwise (success)
32 static int parse_ref(char *path_to_ref, struct strbuf *ref, int *is_detached)
36 if (!strbuf_readlink(ref, path_to_ref, 0)) {
37 /* HEAD is symbolic link */
38 if (!starts_with(ref->buf, "refs/") ||
39 check_refname_format(ref->buf, 0))
41 } else if (strbuf_read_file(ref, path_to_ref, 0) >= 0) {
42 /* textual symref or detached */
43 if (!starts_with(ref->buf, "ref:")) {
47 strbuf_remove(ref, 0, strlen("ref:"));
49 if (check_refname_format(ref->buf, 0))
58 * Add the head_sha1 and head_ref (if not detached) to the given worktree
60 static void add_head_info(struct strbuf *head_ref, struct worktree *worktree)
63 if (worktree->is_detached) {
64 get_sha1_hex(head_ref->buf, worktree->head_sha1);
66 resolve_ref_unsafe(head_ref->buf, 0, worktree->head_sha1, NULL);
67 worktree->head_ref = strbuf_detach(head_ref, NULL);
73 * get the main worktree
75 static struct worktree *get_main_worktree(void)
77 struct worktree *worktree = NULL;
78 struct strbuf path = STRBUF_INIT;
79 struct strbuf worktree_path = STRBUF_INIT;
80 struct strbuf head_ref = STRBUF_INIT;
84 strbuf_add_absolute_path(&worktree_path, get_git_common_dir());
85 is_bare = !strbuf_strip_suffix(&worktree_path, "/.git");
87 strbuf_strip_suffix(&worktree_path, "/.");
89 strbuf_addf(&path, "%s/HEAD", get_git_common_dir());
91 if (parse_ref(path.buf, &head_ref, &is_detached) < 0)
94 worktree = xmalloc(sizeof(struct worktree));
95 worktree->path = strbuf_detach(&worktree_path, NULL);
97 worktree->is_bare = is_bare;
98 worktree->head_ref = NULL;
99 worktree->is_detached = is_detached;
100 worktree->is_current = 0;
101 add_head_info(&head_ref, worktree);
102 worktree->lock_reason = NULL;
103 worktree->lock_reason_valid = 0;
106 strbuf_release(&path);
107 strbuf_release(&worktree_path);
108 strbuf_release(&head_ref);
112 static struct worktree *get_linked_worktree(const char *id)
114 struct worktree *worktree = NULL;
115 struct strbuf path = STRBUF_INIT;
116 struct strbuf worktree_path = STRBUF_INIT;
117 struct strbuf head_ref = STRBUF_INIT;
121 die("Missing linked worktree name");
123 strbuf_git_common_path(&path, "worktrees/%s/gitdir", id);
124 if (strbuf_read_file(&worktree_path, path.buf, 0) <= 0)
125 /* invalid gitdir file */
128 strbuf_rtrim(&worktree_path);
129 if (!strbuf_strip_suffix(&worktree_path, "/.git")) {
130 strbuf_reset(&worktree_path);
131 strbuf_add_absolute_path(&worktree_path, ".");
132 strbuf_strip_suffix(&worktree_path, "/.");
136 strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id);
138 if (parse_ref(path.buf, &head_ref, &is_detached) < 0)
141 worktree = xmalloc(sizeof(struct worktree));
142 worktree->path = strbuf_detach(&worktree_path, NULL);
143 worktree->id = xstrdup(id);
144 worktree->is_bare = 0;
145 worktree->head_ref = NULL;
146 worktree->is_detached = is_detached;
147 worktree->is_current = 0;
148 add_head_info(&head_ref, worktree);
149 worktree->lock_reason = NULL;
150 worktree->lock_reason_valid = 0;
153 strbuf_release(&path);
154 strbuf_release(&worktree_path);
155 strbuf_release(&head_ref);
159 static void mark_current_worktree(struct worktree **worktrees)
161 char *git_dir = xstrdup(absolute_path(get_git_dir()));
164 for (i = 0; worktrees[i]; i++) {
165 struct worktree *wt = worktrees[i];
166 const char *wt_git_dir = get_worktree_git_dir(wt);
168 if (!fspathcmp(git_dir, absolute_path(wt_git_dir))) {
176 struct worktree **get_worktrees(void)
178 struct worktree **list = NULL;
179 struct strbuf path = STRBUF_INIT;
182 int counter = 0, alloc = 2;
184 list = xmalloc(alloc * sizeof(struct worktree *));
186 if ((list[counter] = get_main_worktree()))
189 strbuf_addf(&path, "%s/worktrees", get_git_common_dir());
190 dir = opendir(path.buf);
191 strbuf_release(&path);
193 while ((d = readdir(dir)) != NULL) {
194 struct worktree *linked = NULL;
195 if (is_dot_or_dotdot(d->d_name))
198 if ((linked = get_linked_worktree(d->d_name))) {
199 ALLOC_GROW(list, counter + 1, alloc);
200 list[counter++] = linked;
205 ALLOC_GROW(list, counter + 1, alloc);
206 list[counter] = NULL;
208 mark_current_worktree(list);
212 const char *get_worktree_git_dir(const struct worktree *wt)
215 return get_git_dir();
217 return get_git_common_dir();
219 return git_common_path("worktrees/%s", wt->id);
222 static struct worktree *find_worktree_by_suffix(struct worktree **list,
225 struct worktree *found = NULL;
226 int nr_found = 0, suffixlen;
228 suffixlen = strlen(suffix);
232 for (; *list && nr_found < 2; list++) {
233 const char *path = (*list)->path;
234 int pathlen = strlen(path);
235 int start = pathlen - suffixlen;
237 /* suffix must start at directory boundary */
238 if ((!start || (start > 0 && is_dir_sep(path[start - 1]))) &&
239 !fspathcmp(suffix, path + start)) {
244 return nr_found == 1 ? found : NULL;
247 struct worktree *find_worktree(struct worktree **list,
254 if ((wt = find_worktree_by_suffix(list, arg)))
257 arg = prefix_filename(prefix, strlen(prefix), arg);
258 path = xstrdup(real_path(arg));
259 for (; *list; list++)
260 if (!fspathcmp(path, real_path((*list)->path)))
266 int is_main_worktree(const struct worktree *wt)
271 const char *is_worktree_locked(struct worktree *wt)
273 assert(!is_main_worktree(wt));
275 if (!wt->lock_reason_valid) {
276 struct strbuf path = STRBUF_INIT;
278 strbuf_addstr(&path, worktree_git_path(wt, "locked"));
279 if (file_exists(path.buf)) {
280 struct strbuf lock_reason = STRBUF_INIT;
281 if (strbuf_read_file(&lock_reason, path.buf, 0) < 0)
282 die_errno(_("failed to read '%s'"), path.buf);
283 strbuf_trim(&lock_reason);
284 wt->lock_reason = strbuf_detach(&lock_reason, NULL);
286 wt->lock_reason = NULL;
287 wt->lock_reason_valid = 1;
288 strbuf_release(&path);
291 return wt->lock_reason;
294 int is_worktree_being_rebased(const struct worktree *wt,
297 struct wt_status_state state;
300 memset(&state, 0, sizeof(state));
301 found_rebase = wt_status_check_rebase(wt, &state) &&
302 ((state.rebase_in_progress ||
303 state.rebase_interactive_in_progress) &&
305 starts_with(target, "refs/heads/") &&
306 !strcmp(state.branch, target + strlen("refs/heads/")));
312 int is_worktree_being_bisected(const struct worktree *wt,
315 struct wt_status_state state;
318 memset(&state, 0, sizeof(state));
319 found_rebase = wt_status_check_bisect(wt, &state) &&
321 starts_with(target, "refs/heads/") &&
322 !strcmp(state.branch, target + strlen("refs/heads/"));
328 * note: this function should be able to detect shared symref even if
329 * HEAD is temporarily detached (e.g. in the middle of rebase or
330 * bisect). New commands that do similar things should update this
333 const struct worktree *find_shared_symref(const char *symref,
336 const struct worktree *existing = NULL;
337 struct strbuf path = STRBUF_INIT;
338 struct strbuf sb = STRBUF_INIT;
339 static struct worktree **worktrees;
343 free_worktrees(worktrees);
344 worktrees = get_worktrees();
346 for (i = 0; worktrees[i]; i++) {
347 struct worktree *wt = worktrees[i];
351 if (wt->is_detached && !strcmp(symref, "HEAD")) {
352 if (is_worktree_being_rebased(wt, target)) {
356 if (is_worktree_being_bisected(wt, target)) {
364 strbuf_addf(&path, "%s/%s",
365 get_worktree_git_dir(wt),
368 if (parse_ref(path.buf, &sb, NULL)) {
372 if (!strcmp(sb.buf, target)) {
378 strbuf_release(&path);