The worktree structure provided for an individual worktree includes the
absolute path of the worktree. The fuction to get the worktree details
is a refactor of the find main/linked symref functions.
Signed-off-by: Michael Rappazzo <rappa...@gmail.com>
---
worktree.c | 161 ++++++++++++++++++++++++++++++++++++++++++-------------------
worktree.h | 22 +++++++++
2 files changed, 133 insertions(+), 50 deletions(-)
diff --git a/worktree.c b/worktree.c
index c049947..11a3364 100644
--- a/worktree.c
+++ b/worktree.c
@@ -3,6 +3,17 @@
#include "strbuf.h"
#include "worktree.h"
+void free_worktrees(struct worktree **worktrees)
+{
+ int i = 0;
+
+ for (i = 0; worktrees[i]; i++) {
+ free(worktrees[i]->path);
+ 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).
@@ -17,15 +28,15 @@ static int parse_ref(char *path_to_ref, struct strbuf *ref,
int *is_detached)
{
if (is_detached)
*is_detached = 0;
- if (!strbuf_readlink(ref, path_to_ref, 0))
+ if (!strbuf_readlink(ref, path_to_ref, 0)) {
if (!starts_with(ref->buf, "refs/") ||
check_refname_format(ref->buf, 0))
return -1;
- else if (strbuf_read_file(ref, path_to_ref, 0) >= 0) {
- if (!starts_with(ref->buf, "ref:"))
+ } else if (strbuf_read_file(ref, path_to_ref, 0) >= 0) {
+ if (!starts_with(ref->buf, "ref:")) {
if (is_detached)
*is_detached = 1;
- else {
+ } else {
strbuf_remove(ref, 0, strlen("ref:"));
strbuf_trim(ref);
if (check_refname_format(ref->buf, 0))
@@ -36,87 +47,137 @@ static int parse_ref(char *path_to_ref, struct strbuf
*ref, int *is_detached)
return 0;
}
-static char *find_main_symref(const char *symref, const char *branch)
+/**
+ * get the main worktree
+ */
+static struct worktree *get_main_worktree(void)
{
- struct strbuf sb = STRBUF_INIT;
+ struct worktree *worktree = NULL;
struct strbuf path = STRBUF_INIT;
+ struct strbuf worktree_path = STRBUF_INIT;
struct strbuf gitdir = STRBUF_INIT;
- char *existing = NULL;
+ struct strbuf head_ref = STRBUF_INIT;
- 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))
- goto done;
- strbuf_addstr(&gitdir, get_git_common_dir());
- strbuf_strip_suffix(&gitdir, ".git");
- existing = strbuf_detach(&gitdir, NULL);
-done:
+ strbuf_addf(&gitdir, "%s", absolute_path(get_git_common_dir()));
+ strbuf_addbuf(&worktree_path, &gitdir);
+ if (!strbuf_strip_suffix(&worktree_path, "/.git"))
+ strbuf_strip_suffix(&worktree_path, "/.");
+
+ strbuf_addf(&path, "%s/HEAD", get_git_common_dir());
+
+ if (parse_ref(path.buf, &head_ref, NULL) >= 0) {
+ worktree = xmalloc(sizeof(struct worktree));
+ worktree->path = strbuf_detach(&worktree_path, NULL);
+ worktree->git_dir = strbuf_detach(&gitdir, NULL);
+ }
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 worktree_path = STRBUF_INIT;
struct strbuf gitdir = STRBUF_INIT;
- char *existing = NULL;
+ struct strbuf head_ref = STRBUF_INIT;
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_addf(&gitdir, "%s/worktrees/%s",
+ absolute_path(get_git_common_dir()), id);
+ strbuf_addf(&path, "%s/gitdir", gitdir.buf);
+ 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_addstr(&worktree_path, absolute_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)
- goto done;
- strbuf_rtrim(&gitdir);
- strbuf_strip_suffix(&gitdir, ".git");
+ strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id);
+
+ if (parse_ref(path.buf, &head_ref, NULL) >= 0) {
+ worktree = xmalloc(sizeof(struct worktree));
+ worktree->path = strbuf_detach(&worktree_path, NULL);
+ worktree->git_dir = strbuf_detach(&gitdir, NULL);
+ }
- existing = strbuf_detach(&gitdir, NULL);
done:
strbuf_release(&path);
- strbuf_release(&sb);
strbuf_release(&gitdir);
-
- return existing;
+ strbuf_release(&worktree_path);
+ strbuf_release(&head_ref);
+ return worktree;
}
-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)
- return NULL;
+ if (dir) {
+ while ((d = readdir(dir)) != NULL) {
+ struct worktree *linked = NULL;
+ if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+ continue;
- while ((d = readdir(dir)) != NULL) {
- if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+ if ((linked = get_linked_worktree(d->d_name))) {
+ ALLOC_GROW(list, alloc + 1, alloc);
+ list[counter++] = linked;
+ }
+ }
+ closedir(dir);
+ }
+ list[counter] = NULL;
+ return list;
+}
+
+char *find_shared_symref(const char *symref, const char *target)
+{
+ char *existing = NULL;
+ struct strbuf path = STRBUF_INIT;
+ struct strbuf sb = STRBUF_INIT;
+ struct worktree **worktrees = get_worktrees();
+ int i = 0;
+
+ for (i = 0; worktrees[i]; i++) {
+ strbuf_reset(&path);
+ strbuf_reset(&sb);
+ strbuf_addf(&path, "%s/%s", worktrees[i]->git_dir, 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 = xstrdup(worktrees[i]->path);
+ break;
+ }
}
-done:
- closedir(dir);
+
+ strbuf_release(&path);
+ strbuf_release(&sb);
+ free_worktrees(worktrees);
return existing;
}
diff --git a/worktree.h b/worktree.h
index 71b1409..7022029 100644
--- a/worktree.h
+++ b/worktree.h
@@ -1,6 +1,28 @@
#ifndef WORKTREE_H
#define WORKTREE_H
+struct worktree {
+ char *path;
+ char *git_dir;
+};
+
+/* Functions for acting on the information about worktrees. */
+
+/*
+ * Get the worktrees. The primary worktree will always be the first returned,
+ * and linked worktrees will be pointed to by 'next' in each subsequent
+ * worktree. No specific ordering is done on the linked worktrees.
+ *
+ * The caller is responsible for freeing the memory from the returned
+ * worktree(s).
+ */
+extern struct worktree **get_worktrees(void);
+
+/*
+ * Free up the memory for worktree(s)
+ */
+extern void free_worktrees(struct worktree **);
+
/*
* Check if a per-worktree symref points to a ref in the main worktree
* or any linked worktree, and return the path to the exising worktree
--
2.6.0
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