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[PATCH 07/20] worktree.c: store "id" instead of "git_dir"

From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Date
Feb 3, 2016, 09:35 UTC
Message-ID
<1454492150-10628-8-git-send-email-pclouds@gmail.com>
In-Reply-To
<1454492150-10628-1-git-send-email-pclouds@gmail.com>

We can reconstruct git_dir from id quite easily. It's a bit hackier to do the reverse.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 worktree.c | 29 ++++++++++++++++-------------
 worktree.h |  7 ++++++-
 2 files changed, 22 insertions(+), 14 deletions(-)
diff --git a/worktree.c b/worktree.c
index ddb8cb7..4c38414 100644
--- a/worktree.c
+++ b/worktree.c
@@ -10,7 +10,7 @@ void free_worktrees(struct worktree **worktrees)
 
 	for (i = 0; worktrees[i]; i++) {
 		free(worktrees[i]->path);
-		free(worktrees[i]->git_dir);
+		free(worktrees[i]->id);
 		free(worktrees[i]->head_ref);
 		free(worktrees[i]);
 	}
@@ -75,13 +75,11 @@ static struct worktree *get_main_worktree(void)
 	struct worktree *worktree = NULL;
 	struct strbuf path = STRBUF_INIT;
 	struct strbuf worktree_path = STRBUF_INIT;
-	struct strbuf gitdir = STRBUF_INIT;
 	struct strbuf head_ref = STRBUF_INIT;
 	int is_bare = 0;
 	int is_detached = 0;
 
-	strbuf_addf(&gitdir, "%s", absolute_path(get_git_common_dir()));
-	strbuf_addbuf(&worktree_path, &gitdir);
+	strbuf_addstr(&worktree_path, absolute_path(get_git_common_dir()));
 	is_bare = !strbuf_strip_suffix(&worktree_path, "/.git");
 	if (is_bare)
 		strbuf_strip_suffix(&worktree_path, "/.");
@@ -93,7 +91,7 @@ static struct worktree *get_main_worktree(void)
 
 	worktree = xmalloc(sizeof(struct worktree));
 	worktree->path = strbuf_detach(&worktree_path, NULL);
-	worktree->git_dir = strbuf_detach(&gitdir, NULL);
+	worktree->id = NULL;
 	worktree->is_bare = is_bare;
 	worktree->head_ref = NULL;
 	worktree->is_detached = is_detached;
@@ -101,7 +99,6 @@ static struct worktree *get_main_worktree(void)
 
 done:
 	strbuf_release(&path);
-	strbuf_release(&gitdir);
 	strbuf_release(&worktree_path);
 	strbuf_release(&head_ref);
 	return worktree;
@@ -112,16 +109,13 @@ static struct worktree *get_linked_worktree(const char *id)
 	struct worktree *worktree = NULL;
 	struct strbuf path = STRBUF_INIT;
 	struct strbuf worktree_path = STRBUF_INIT;
-	struct strbuf gitdir = STRBUF_INIT;
 	struct strbuf head_ref = STRBUF_INIT;
 	int is_detached = 0;
 
 	if (!id)
 		die("Missing linked worktree name");
 
-	strbuf_addf(&gitdir, "%s/worktrees/%s",
-			absolute_path(get_git_common_dir()), id);
-	strbuf_addf(&path, "%s/gitdir", gitdir.buf);
+	strbuf_git_common_path(&path, "worktrees/%s/gitdir", id);
 	if (strbuf_read_file(&worktree_path, path.buf, 0) <= 0)
 		/* invalid gitdir file */
 		goto done;
@@ -141,7 +135,7 @@ static struct worktree *get_linked_worktree(const char *id)
 
 	worktree = xmalloc(sizeof(struct worktree));
 	worktree->path = strbuf_detach(&worktree_path, NULL);
-	worktree->git_dir = strbuf_detach(&gitdir, NULL);
+	worktree->id = xstrdup(id);
 	worktree->is_bare = 0;
 	worktree->head_ref = NULL;
 	worktree->is_detached = is_detached;
@@ -149,7 +143,6 @@ static struct worktree *get_linked_worktree(const char *id)
 
 done:
 	strbuf_release(&path);
-	strbuf_release(&gitdir);
 	strbuf_release(&worktree_path);
 	strbuf_release(&head_ref);
 	return worktree;
@@ -189,6 +182,14 @@ struct worktree **get_worktrees(void)
 	return list;
 }
 
+const char *get_worktree_git_dir(const struct worktree *wt)
+{
+	if (wt->id)
+		return git_common_path("worktrees/%s", wt->id);
+	else
+		return get_git_common_dir();
+}
+
 char *find_shared_symref(const char *symref, const char *target)
 {
 	char *existing = NULL;
@@ -200,7 +201,9 @@ char *find_shared_symref(const char *symref, const char *target)
 	for (i = 0; worktrees[i]; i++) {
 		strbuf_reset(&path);
 		strbuf_reset(&sb);
-		strbuf_addf(&path, "%s/%s", worktrees[i]->git_dir, symref);
+		strbuf_addf(&path, "%s/%s",
+			    get_worktree_git_dir(worktrees[i]),
+			    symref);
 
 		if (parse_ref(path.buf, &sb, NULL)) {
 			continue;
diff --git a/worktree.h b/worktree.h
index b4b3dda..e89d423 100644
--- a/worktree.h
+++ b/worktree.h
@@ -3,7 +3,7 @@
 
 struct worktree {
 	char *path;
-	char *git_dir;
+	char *id;
 	char *head_ref;
 	unsigned char head_sha1[20];
 	int is_detached;
@@ -23,6 +23,11 @@ struct worktree {
 extern struct worktree **get_worktrees(void);
 
 /*
+ * Return git dir of the worktree. Note that the path may be relative.
+ */
+extern const char *get_worktree_git_dir(const struct worktree *wt);
+
+/*
  * Free up the memory for worktree(s)
  */
 extern void free_worktrees(struct worktree **);
-- 
2.7.0.377.g4cd97dd
Previous: Nguyễn Thái Ngọc DuyNext: Nguyễn Thái Ngọc Duy
Message 8 of 50 in “"git worktree move" preview”
  1. 00/20 "git worktree move" previewNguyễn Thái Ngọc Duy, Feb 3, 2016
  2. 01/20 usage.c: move format processing out of die_errno()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  3. 02/20 usage.c: add sys_error() that prints strerror() automaticallyNguyễn Thái Ngọc Duy, Feb 3, 2016
  4. 03/20 path.c: add git_common_path() and strbuf_git_common_path()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  5. 04/20 path.c: add is_git_path_shared()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  6. 05/20 copy.c: add copy_dir_recursively()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  7. 06/20 worktree.c: use is_dot_or_dotdot()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  8. 07/20 worktree.c: store "id" instead of "git_dir"Nguyễn Thái Ngọc Duy, Feb 3, 2016
  9. 08/20 worktree.c: add clear_worktree()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  10. 09/20 worktree.c: add find_worktree_by_path()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  11. 10/20 worktree.c: add is_main_worktree()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  12. 11/20 worktree.c: recognize no main worktreeNguyễn Thái Ngọc Duy, Feb 3, 2016
  13. 12/20 worktree.c: add update_worktree_location()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  14. 13/20 worktree.c: add update_worktree_gitfile()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  15. 14/20 worktree.c: add collect_per_worktree_git_paths()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  16. 15/20 worktree: avoid 0{40}, too many zeroes, hard to readNguyễn Thái Ngọc Duy, Feb 3, 2016
  17. 16/20 worktree: simplify prefixing pathsNguyễn Thái Ngọc Duy, Feb 3, 2016
  18. 17/20 worktree: add "move" commmandNguyễn Thái Ngọc Duy, Feb 3, 2016
  19. 18/20 worktree: refactor add_worktree()Nguyễn Thái Ngọc Duy, Feb 3, 2016
  20. 19/20 worktree: move repo, simple caseNguyễn Thái Ngọc Duy, Feb 3, 2016
  21. 20/20 worktree: move repo, convert main worktreeNguyễn Thái Ngọc Duy, Feb 3, 2016
  22. 00/26 worktree lock, move, remove and unlockNguyễn Thái Ngọc Duy, Feb 16, 2016
  23. 01/26 usage.c: move format processing out of die_errno()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  24. 02/26 usage.c: add sys_error() that prints strerror() automaticallyNguyễn Thái Ngọc Duy, Feb 16, 2016
  25. 03/26 copy.c: import copy_file() from busyboxNguyễn Thái Ngọc Duy, Feb 16, 2016
  26. 04/26 copy.c: delete unused code in copy_file()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  27. 05/26 copy.c: convert bb_(p)error_msg to (sys_)errorNguyễn Thái Ngọc Duy, Feb 16, 2016
  28. 06/26 copy.c: style fixNguyễn Thái Ngọc Duy, Feb 16, 2016
  29. 07/26 copy.c: convert copy_file() to copy_dir_recursively()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  30. 08/26 completion: support git-worktreeNguyễn Thái Ngọc Duy, Feb 16, 2016
  31. 09/26 git-worktree.txt: keep subcommand listing in alphabetical orderNguyễn Thái Ngọc Duy, Feb 16, 2016
  32. 10/26 wrapper.c: allow to create an empty file with write_file()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  33. Junio C HamanoFeb 17, 2016
  34. Duy NguyenFeb 18, 2016
  35. 11/26 path.c: add git_common_path() and strbuf_git_common_path()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  36. 12/26 worktree.c: use is_dot_or_dotdot()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  37. 13/26 worktree.c: store "id" instead of "git_dir"Nguyễn Thái Ngọc Duy, Feb 16, 2016
  38. 14/26 worktree.c: add clear_worktree()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  39. 15/26 worktree.c: add find_worktree_by_path()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  40. 16/26 worktree.c: add is_main_worktree()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  41. 17/26 worktree.c: add validate_worktree()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  42. 18/26 worktree.c: add update_worktree_location()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  43. 19/26 worktree.c: add is_worktree_locked()Nguyễn Thái Ngọc Duy, Feb 16, 2016
  44. 20/26 worktree: avoid 0{40}, too many zeroes, hard to readNguyễn Thái Ngọc Duy, Feb 16, 2016
  45. 21/26 worktree: simplify prefixing pathsNguyễn Thái Ngọc Duy, Feb 16, 2016
  46. 22/26 worktree: add "lock" commandNguyễn Thái Ngọc Duy, Feb 16, 2016
  47. 23/26 worktree: add "unlock" commandNguyễn Thái Ngọc Duy, Feb 16, 2016
  48. 24/26 worktree: add "move" commmandNguyễn Thái Ngọc Duy, Feb 16, 2016
  49. 25/26 worktree move: accept destination as directoryNguyễn Thái Ngọc Duy, Feb 16, 2016
  50. 26/26 worktree: add "remove" commandNguyễn Thái Ngọc Duy, Feb 16, 2016

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