From: Eric Sunshine <sunshine@sunshineco.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
Duy Nguyen <pclouds@gmail.com>,
Michael J Gruber <git@drmicha.warpmail.net>,
Eric Sunshine <sunshine@sunshineco.com>
Subject: [PATCH v3 09/22] branch: publish die_if_checked_out()
Date: Fri, 17 Jul 2015 19:00:04 -0400 [thread overview]
Message-ID: <1437174017-81687-10-git-send-email-sunshine@sunshineco.com> (raw)
In-Reply-To: <1437174017-81687-1-git-send-email-sunshine@sunshineco.com>
git-worktree currently conflates new branch creation, setting of HEAD in
the new wortkree, and worktree population into a single sub-invocation
of git-checkout. However, these operations will eventually be separated,
and git-worktree itself will need to be able to detect if the branch is
already checked out elsewhere, rather than relying upon git-branch to
make this determination, so publish die_if_checked_out().
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
---
No changes since v2.
branch.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
branch.h | 7 ++++++
builtin/checkout.c | 67 ------------------------------------------------------
3 files changed, 74 insertions(+), 67 deletions(-)
diff --git a/branch.c b/branch.c
index 4bab55a..af9480f 100644
--- a/branch.c
+++ b/branch.c
@@ -309,3 +309,70 @@ void remove_branch_state(void)
unlink(git_path("MERGE_MODE"));
unlink(git_path("SQUASH_MSG"));
}
+
+static void check_linked_checkout(const char *branch, const char *id)
+{
+ struct strbuf sb = STRBUF_INIT;
+ struct strbuf path = STRBUF_INIT;
+ struct strbuf gitdir = STRBUF_INIT;
+
+ /*
+ * $GIT_COMMON_DIR/HEAD is practically outside
+ * $GIT_DIR so resolve_ref_unsafe() won't work (it
+ * uses git_path). Parse the ref ourselves.
+ */
+ if (id)
+ strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id);
+ else
+ strbuf_addf(&path, "%s/HEAD", get_git_common_dir());
+
+ if (!strbuf_readlink(&sb, path.buf, 0)) {
+ if (!starts_with(sb.buf, "refs/") ||
+ check_refname_format(sb.buf, 0))
+ goto done;
+ } else if (strbuf_read_file(&sb, path.buf, 0) >= 0 &&
+ starts_with(sb.buf, "ref:")) {
+ strbuf_remove(&sb, 0, strlen("ref:"));
+ strbuf_trim(&sb);
+ } else
+ goto done;
+ if (strcmp(sb.buf, branch))
+ goto done;
+ if (id) {
+ 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);
+ } else
+ strbuf_addstr(&gitdir, get_git_common_dir());
+ skip_prefix(branch, "refs/heads/", &branch);
+ strbuf_strip_suffix(&gitdir, ".git");
+ die(_("'%s' is already checked out at '%s'"), branch, gitdir.buf);
+done:
+ strbuf_release(&path);
+ strbuf_release(&sb);
+ strbuf_release(&gitdir);
+}
+
+void die_if_checked_out(const char *branch)
+{
+ struct strbuf path = STRBUF_INIT;
+ DIR *dir;
+ struct dirent *d;
+
+ check_linked_checkout(branch, NULL);
+
+ strbuf_addf(&path, "%s/worktrees", get_git_common_dir());
+ dir = opendir(path.buf);
+ strbuf_release(&path);
+ if (!dir)
+ return;
+
+ while ((d = readdir(dir)) != NULL) {
+ if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+ continue;
+ check_linked_checkout(branch, d->d_name);
+ }
+ closedir(dir);
+}
diff --git a/branch.h b/branch.h
index 64173ab..58aa45f 100644
--- a/branch.h
+++ b/branch.h
@@ -52,4 +52,11 @@ extern void install_branch_config(int flag, const char *local, const char *origi
*/
extern int read_branch_desc(struct strbuf *, const char *branch_name);
+/*
+ * Check if a branch is checked out in the main worktree or any linked
+ * worktree and die (with a message describing its checkout location) if
+ * it is.
+ */
+extern void die_if_checked_out(const char *branch);
+
#endif
diff --git a/builtin/checkout.c b/builtin/checkout.c
index f04dcaa..4ae895c 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -873,73 +873,6 @@ static const char *unique_tracking_name(const char *name, unsigned char *sha1)
return NULL;
}
-static void check_linked_checkout(const char *branch, const char *id)
-{
- struct strbuf sb = STRBUF_INIT;
- struct strbuf path = STRBUF_INIT;
- struct strbuf gitdir = STRBUF_INIT;
-
- /*
- * $GIT_COMMON_DIR/HEAD is practically outside
- * $GIT_DIR so resolve_ref_unsafe() won't work (it
- * uses git_path). Parse the ref ourselves.
- */
- if (id)
- strbuf_addf(&path, "%s/worktrees/%s/HEAD", get_git_common_dir(), id);
- else
- strbuf_addf(&path, "%s/HEAD", get_git_common_dir());
-
- if (!strbuf_readlink(&sb, path.buf, 0)) {
- if (!starts_with(sb.buf, "refs/") ||
- check_refname_format(sb.buf, 0))
- goto done;
- } else if (strbuf_read_file(&sb, path.buf, 0) >= 0 &&
- starts_with(sb.buf, "ref:")) {
- strbuf_remove(&sb, 0, strlen("ref:"));
- strbuf_trim(&sb);
- } else
- goto done;
- if (strcmp(sb.buf, branch))
- goto done;
- if (id) {
- 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);
- } else
- strbuf_addstr(&gitdir, get_git_common_dir());
- skip_prefix(branch, "refs/heads/", &branch);
- strbuf_strip_suffix(&gitdir, ".git");
- die(_("'%s' is already checked out at '%s'"), branch, gitdir.buf);
-done:
- strbuf_release(&path);
- strbuf_release(&sb);
- strbuf_release(&gitdir);
-}
-
-static void die_if_checked_out(const char *branch)
-{
- struct strbuf path = STRBUF_INIT;
- DIR *dir;
- struct dirent *d;
-
- check_linked_checkout(branch, NULL);
-
- strbuf_addf(&path, "%s/worktrees", get_git_common_dir());
- dir = opendir(path.buf);
- strbuf_release(&path);
- if (!dir)
- return;
-
- while ((d = readdir(dir)) != NULL) {
- if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
- continue;
- check_linked_checkout(branch, d->d_name);
- }
- closedir(dir);
-}
-
static int parse_branchname_arg(int argc, const char **argv,
int dwim_new_local_branch_ok,
struct branch_info *new,
--
2.5.0.rc2.378.g0af52e8
next prev parent reply other threads:[~2015-07-17 23:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-17 22:59 [PATCH v3 00/22] rid git-checkout of too-intimate knowledge of new worktree Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 01/22] checkout: avoid resolving HEAD unnecessarily Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 02/22] checkout: name check_linked_checkouts() more meaningfully Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 03/22] checkout: improve die_if_checked_out() robustness Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 04/22] checkout: die_if_checked_out: simplify strbuf management Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 05/22] checkout: generalize die_if_checked_out() branch name argument Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 06/22] checkout: check_linked_checkout: improve "already checked out" aesthetic Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 07/22] checkout: check_linked_checkout: simplify symref parsing Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 08/22] checkout: teach check_linked_checkout() about symbolic link HEAD Eric Sunshine
2015-07-17 23:00 ` Eric Sunshine [this message]
2015-07-17 23:00 ` [PATCH v3 10/22] worktree: improve worktree setup message Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 11/22] worktree: simplify new branch (-b/-B) option checking Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 12/22] worktree: introduce options container Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 13/22] worktree: make --detach mutually exclusive with -b/-B Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 14/22] worktree: add: suppress auto-vivication with --detach and no <branch> Eric Sunshine
2015-07-17 23:20 ` Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 15/22] worktree: make branch creation distinct from worktree population Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 16/22] worktree: elucidate environment variables intended for child processes Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 17/22] worktree: add_worktree: construct worktree-population command locally Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 18/22] worktree: detect branch-name/detached and error conditions locally Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 19/22] worktree: make setup of new HEAD distinct from worktree population Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 20/22] worktree: avoid resolving HEAD unnecessarily Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 21/22] worktree: populate via "git reset --hard" rather than "git checkout" Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 22/22] checkout: drop intimate knowledge of newly created worktree Eric Sunshine
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