#include "refs.h"
#include "strbuf.h"
#include "worktree.h"
+#include "dir.h"
+#include "wt-status.h"
+
+void free_worktrees(struct worktree **worktrees)
+{
+ int i = 0;
+
+ for (i = 0; worktrees[i]; i++) {
+ free(worktrees[i]->path);
+ free(worktrees[i]->id);
+ free(worktrees[i]->head_ref);
+ free(worktrees[i]->lock_reason);
+ free(worktrees[i]);
+ }
+ free (worktrees);
+}
/*
* read 'path_to_ref' into 'ref'. Also if is_detached is not NULL,
- * set is_detached to 1 (0) if the ref is detatched (is not detached).
+ * set is_detached to 1 (0) if the ref is detached (is not detached).
*
* $GIT_COMMON_DIR/$symref (e.g. HEAD) is practically outside $GIT_DIR so
* for linked worktrees, `resolve_ref_unsafe()` won't work (it uses
return 0;
}
-static char *find_main_symref(const char *symref, const char *branch)
+/**
+ * Add the head_sha1 and head_ref (if not detached) to the given worktree
+ */
+static void add_head_info(struct strbuf *head_ref, struct worktree *worktree)
{
- struct strbuf sb = STRBUF_INIT;
+ if (head_ref->len) {
+ if (worktree->is_detached) {
+ get_sha1_hex(head_ref->buf, worktree->head_sha1);
+ } else {
+ resolve_ref_unsafe(head_ref->buf, 0, worktree->head_sha1, NULL);
+ worktree->head_ref = strbuf_detach(head_ref, NULL);
+ }
+ }
+}
+
+/**
+ * get the main worktree
+ */
+static struct worktree *get_main_worktree(void)
+{
+ struct worktree *worktree = NULL;
struct strbuf path = STRBUF_INIT;
- struct strbuf gitdir = STRBUF_INIT;
- char *existing = NULL;
+ struct strbuf worktree_path = STRBUF_INIT;
+ struct strbuf head_ref = STRBUF_INIT;
+ int is_bare = 0;
+ int is_detached = 0;
- strbuf_addf(&path, "%s/%s", get_git_common_dir(), symref);
- if (parse_ref(path.buf, &sb, NULL) < 0)
- goto done;
- if (strcmp(sb.buf, branch))
+ strbuf_add_absolute_path(&worktree_path, get_git_common_dir());
+ is_bare = !strbuf_strip_suffix(&worktree_path, "/.git");
+ if (is_bare)
+ strbuf_strip_suffix(&worktree_path, "/.");
+
+ strbuf_addf(&path, "%s/HEAD", get_git_common_dir());
+
+ if (parse_ref(path.buf, &head_ref, &is_detached) < 0)
goto done;
- strbuf_addstr(&gitdir, get_git_common_dir());
- strbuf_strip_suffix(&gitdir, ".git");
- existing = strbuf_detach(&gitdir, NULL);
+
+ worktree = xmalloc(sizeof(struct worktree));
+ worktree->path = strbuf_detach(&worktree_path, NULL);
+ worktree->id = NULL;
+ worktree->is_bare = is_bare;
+ worktree->head_ref = NULL;
+ worktree->is_detached = is_detached;
+ worktree->is_current = 0;
+ add_head_info(&head_ref, worktree);
+ worktree->lock_reason = NULL;
+ worktree->lock_reason_valid = 0;
+
done:
strbuf_release(&path);
- strbuf_release(&sb);
- strbuf_release(&gitdir);
-
- return existing;
+ strbuf_release(&worktree_path);
+ strbuf_release(&head_ref);
+ return worktree;
}
-static char *find_linked_symref(const char *symref, const char *branch,
- const char *id)
+static struct worktree *get_linked_worktree(const char *id)
{
- struct strbuf sb = STRBUF_INIT;
+ struct worktree *worktree = NULL;
struct strbuf path = STRBUF_INIT;
- struct strbuf gitdir = STRBUF_INIT;
- char *existing = NULL;
+ struct strbuf worktree_path = STRBUF_INIT;
+ struct strbuf head_ref = STRBUF_INIT;
+ int is_detached = 0;
if (!id)
die("Missing linked worktree name");
- strbuf_addf(&path, "%s/worktrees/%s/%s", get_git_common_dir(), id, symref);
-
- if (parse_ref(path.buf, &sb, NULL) < 0)
- goto done;
- if (strcmp(sb.buf, branch))
+ strbuf_git_common_path(&path, "worktrees/%s/gitdir", id);
+ if (strbuf_read_file(&worktree_path, path.buf, 0) <= 0)
+ /* invalid gitdir file */
goto done;
+
+ strbuf_rtrim(&worktree_path);
+ if (!strbuf_strip_suffix(&worktree_path, "/.git")) {
+ strbuf_reset(&worktree_path);
+ strbuf_add_absolute_path(&worktree_path, ".");
+ strbuf_strip_suffix(&worktree_path, "/.");
+ }
+
strbuf_reset(&path);
- strbuf_addf(&path, "%s/worktrees/%s/gitdir", get_git_common_dir(), id);
- if (strbuf_read_file(&gitdir, path.buf, 0) <= 0)
+ strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id);
+
+ if (parse_ref(path.buf, &head_ref, &is_detached) < 0)
goto done;
- strbuf_rtrim(&gitdir);
- strbuf_strip_suffix(&gitdir, ".git");
- existing = strbuf_detach(&gitdir, NULL);
+ worktree = xmalloc(sizeof(struct worktree));
+ worktree->path = strbuf_detach(&worktree_path, NULL);
+ worktree->id = xstrdup(id);
+ worktree->is_bare = 0;
+ worktree->head_ref = NULL;
+ worktree->is_detached = is_detached;
+ worktree->is_current = 0;
+ add_head_info(&head_ref, worktree);
+ worktree->lock_reason = NULL;
+ worktree->lock_reason_valid = 0;
+
done:
strbuf_release(&path);
- strbuf_release(&sb);
- strbuf_release(&gitdir);
+ strbuf_release(&worktree_path);
+ strbuf_release(&head_ref);
+ return worktree;
+}
- return existing;
+static void mark_current_worktree(struct worktree **worktrees)
+{
+ char *git_dir = xstrdup(absolute_path(get_git_dir()));
+ int i;
+
+ for (i = 0; worktrees[i]; i++) {
+ struct worktree *wt = worktrees[i];
+ const char *wt_git_dir = get_worktree_git_dir(wt);
+
+ if (!fspathcmp(git_dir, absolute_path(wt_git_dir))) {
+ wt->is_current = 1;
+ break;
+ }
+ }
+ free(git_dir);
}
-char *find_shared_symref(const char *symref, const char *target)
+struct worktree **get_worktrees(void)
{
+ struct worktree **list = NULL;
struct strbuf path = STRBUF_INIT;
DIR *dir;
struct dirent *d;
- char *existing;
+ int counter = 0, alloc = 2;
+
+ list = xmalloc(alloc * sizeof(struct worktree *));
- if ((existing = find_main_symref(symref, target)))
- return existing;
+ if ((list[counter] = get_main_worktree()))
+ counter++;
strbuf_addf(&path, "%s/worktrees", get_git_common_dir());
dir = opendir(path.buf);
strbuf_release(&path);
- if (!dir)
+ if (dir) {
+ while ((d = readdir(dir)) != NULL) {
+ struct worktree *linked = NULL;
+ if (is_dot_or_dotdot(d->d_name))
+ continue;
+
+ if ((linked = get_linked_worktree(d->d_name))) {
+ ALLOC_GROW(list, counter + 1, alloc);
+ list[counter++] = linked;
+ }
+ }
+ closedir(dir);
+ }
+ ALLOC_GROW(list, counter + 1, alloc);
+ list[counter] = NULL;
+
+ mark_current_worktree(list);
+ return list;
+}
+
+const char *get_worktree_git_dir(const struct worktree *wt)
+{
+ if (!wt)
+ return get_git_dir();
+ else if (!wt->id)
+ return get_git_common_dir();
+ else
+ return git_common_path("worktrees/%s", wt->id);
+}
+
+static struct worktree *find_worktree_by_suffix(struct worktree **list,
+ const char *suffix)
+{
+ struct worktree *found = NULL;
+ int nr_found = 0, suffixlen;
+
+ suffixlen = strlen(suffix);
+ if (!suffixlen)
return NULL;
- while ((d = readdir(dir)) != NULL) {
- if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+ for (; *list && nr_found < 2; list++) {
+ const char *path = (*list)->path;
+ int pathlen = strlen(path);
+ int start = pathlen - suffixlen;
+
+ /* suffix must start at directory boundary */
+ if ((!start || (start > 0 && is_dir_sep(path[start - 1]))) &&
+ !fspathcmp(suffix, path + start)) {
+ found = *list;
+ nr_found++;
+ }
+ }
+ return nr_found == 1 ? found : NULL;
+}
+
+struct worktree *find_worktree(struct worktree **list,
+ const char *prefix,
+ const char *arg)
+{
+ struct worktree *wt;
+ char *path;
+
+ if ((wt = find_worktree_by_suffix(list, arg)))
+ return wt;
+
+ arg = prefix_filename(prefix, strlen(prefix), arg);
+ path = xstrdup(real_path(arg));
+ for (; *list; list++)
+ if (!fspathcmp(path, real_path((*list)->path)))
+ break;
+ free(path);
+ return *list;
+}
+
+int is_main_worktree(const struct worktree *wt)
+{
+ return !wt->id;
+}
+
+const char *is_worktree_locked(struct worktree *wt)
+{
+ assert(!is_main_worktree(wt));
+
+ if (!wt->lock_reason_valid) {
+ struct strbuf path = STRBUF_INIT;
+
+ strbuf_addstr(&path, worktree_git_path(wt, "locked"));
+ if (file_exists(path.buf)) {
+ struct strbuf lock_reason = STRBUF_INIT;
+ if (strbuf_read_file(&lock_reason, path.buf, 0) < 0)
+ die_errno(_("failed to read '%s'"), path.buf);
+ strbuf_trim(&lock_reason);
+ wt->lock_reason = strbuf_detach(&lock_reason, NULL);
+ } else
+ wt->lock_reason = NULL;
+ wt->lock_reason_valid = 1;
+ strbuf_release(&path);
+ }
+
+ return wt->lock_reason;
+}
+
+int is_worktree_being_rebased(const struct worktree *wt,
+ const char *target)
+{
+ struct wt_status_state state;
+ int found_rebase;
+
+ memset(&state, 0, sizeof(state));
+ found_rebase = wt_status_check_rebase(wt, &state) &&
+ ((state.rebase_in_progress ||
+ state.rebase_interactive_in_progress) &&
+ state.branch &&
+ starts_with(target, "refs/heads/") &&
+ !strcmp(state.branch, target + strlen("refs/heads/")));
+ free(state.branch);
+ free(state.onto);
+ return found_rebase;
+}
+
+int is_worktree_being_bisected(const struct worktree *wt,
+ const char *target)
+{
+ struct wt_status_state state;
+ int found_rebase;
+
+ memset(&state, 0, sizeof(state));
+ found_rebase = wt_status_check_bisect(wt, &state) &&
+ state.branch &&
+ starts_with(target, "refs/heads/") &&
+ !strcmp(state.branch, target + strlen("refs/heads/"));
+ free(state.branch);
+ return found_rebase;
+}
+
+/*
+ * note: this function should be able to detect shared symref even if
+ * HEAD is temporarily detached (e.g. in the middle of rebase or
+ * bisect). New commands that do similar things should update this
+ * function as well.
+ */
+const struct worktree *find_shared_symref(const char *symref,
+ const char *target)
+{
+ const struct worktree *existing = NULL;
+ struct strbuf path = STRBUF_INIT;
+ struct strbuf sb = STRBUF_INIT;
+ static struct worktree **worktrees;
+ int i = 0;
+
+ if (worktrees)
+ free_worktrees(worktrees);
+ worktrees = get_worktrees();
+
+ for (i = 0; worktrees[i]; i++) {
+ struct worktree *wt = worktrees[i];
+
+ if (wt->is_detached && !strcmp(symref, "HEAD")) {
+ if (is_worktree_being_rebased(wt, target)) {
+ existing = wt;
+ break;
+ }
+ if (is_worktree_being_bisected(wt, target)) {
+ existing = wt;
+ break;
+ }
+ }
+
+ strbuf_reset(&path);
+ strbuf_reset(&sb);
+ strbuf_addf(&path, "%s/%s",
+ get_worktree_git_dir(wt),
+ symref);
+
+ if (parse_ref(path.buf, &sb, NULL)) {
continue;
- existing = find_linked_symref(symref, target, d->d_name);
- if (existing)
- goto done;
+ }
+
+ if (!strcmp(sb.buf, target)) {
+ existing = wt;
+ break;
+ }
}
-done:
- closedir(dir);
+
+ strbuf_release(&path);
+ strbuf_release(&sb);
return existing;
}