summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLibravatar Junio C Hamano <gitster@pobox.com>2010-01-22 16:08:05 -0800
committerLibravatar Junio C Hamano <gitster@pobox.com>2010-01-22 16:08:05 -0800
commit1a545d0b5fa56a7be88fe082cec7847715079a18 (patch)
tree721ec8d309c6aea0fa3a80eea8d5c1ad07f6bed1
parentMerge branch 'jc/maint-limit-note-output' (diff)
parentbranch: warn and refuse to set a branch as a tracking branch of itself. (diff)
downloadtgif-1a545d0b5fa56a7be88fe082cec7847715079a18.tar.xz
Merge branch 'il/branch-set-upstream'
* il/branch-set-upstream: branch: warn and refuse to set a branch as a tracking branch of itself. Add branch --set-upstream
-rw-r--r--Documentation/git-branch.txt8
-rw-r--r--branch.c45
-rw-r--r--builtin-branch.c2
-rw-r--r--cache.h1
-rwxr-xr-xt/t6040-tracking-info.sh21
5 files changed, 64 insertions, 13 deletions
diff --git a/Documentation/git-branch.txt b/Documentation/git-branch.txt
index 44144d5a0d..6b6c3da2d9 100644
--- a/Documentation/git-branch.txt
+++ b/Documentation/git-branch.txt
@@ -11,7 +11,7 @@ SYNOPSIS
'git branch' [--color | --no-color] [-r | -a]
[-v [--abbrev=<length> | --no-abbrev]]
[(--merged | --no-merged | --contains) [<commit>]]
-'git branch' [--track | --no-track] [-l] [-f] <branchname> [<start-point>]
+'git branch' [--set-upstream | --track | --no-track] [-l] [-f] <branchname> [<start-point>]
'git branch' (-m | -M) [<oldbranch>] <newbranch>
'git branch' (-d | -D) [-r] <branchname>...
@@ -129,6 +129,12 @@ start-point is either a local or remote branch.
Do not set up "upstream" configuration, even if the
branch.autosetupmerge configuration variable is true.
+--set-upstream::
+ If specified branch does not exist yet or if '--force' has been
+ given, acts exactly like '--track'. Otherwise sets up configuration
+ like '--track' would when creating the branch, except that where
+ branch points to is not changed.
+
--contains <commit>::
Only list branches which contain the specified commit.
diff --git a/branch.c b/branch.c
index 05ef3f5c9c..9e1f63ed8d 100644
--- a/branch.c
+++ b/branch.c
@@ -49,9 +49,19 @@ static int should_setup_rebase(const char *origin)
void install_branch_config(int flag, const char *local, const char *origin, const char *remote)
{
+ const char *shortname = remote + 11;
+ int remote_is_branch = !prefixcmp(remote, "refs/heads/");
struct strbuf key = STRBUF_INIT;
int rebasing = should_setup_rebase(origin);
+ if (remote_is_branch
+ && !strcmp(local, shortname)
+ && !origin) {
+ warning("Not setting branch %s as its own upstream.",
+ local);
+ return;
+ }
+
strbuf_addf(&key, "branch.%s.remote", local);
git_config_set(key.buf, origin ? origin : ".");
@@ -71,8 +81,8 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
strbuf_addstr(&key, origin ? "remote" : "local");
/* Are we tracking a proper "branch"? */
- if (!prefixcmp(remote, "refs/heads/")) {
- strbuf_addf(&key, " branch %s", remote + 11);
+ if (remote_is_branch) {
+ strbuf_addf(&key, " branch %s", shortname);
if (origin)
strbuf_addf(&key, " from %s", origin);
}
@@ -108,6 +118,7 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
switch (track) {
case BRANCH_TRACK_ALWAYS:
case BRANCH_TRACK_EXPLICIT:
+ case BRANCH_TRACK_OVERRIDE:
break;
default:
return 1;
@@ -128,18 +139,25 @@ void create_branch(const char *head,
const char *name, const char *start_name,
int force, int reflog, enum branch_track track)
{
- struct ref_lock *lock;
+ struct ref_lock *lock = NULL;
struct commit *commit;
unsigned char sha1[20];
char *real_ref, msg[PATH_MAX + 20];
struct strbuf ref = STRBUF_INIT;
int forcing = 0;
+ int dont_change_ref = 0;
+ int explicit_tracking = 0;
+
+ if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
+ explicit_tracking = 1;
if (strbuf_check_branch_ref(&ref, name))
die("'%s' is not a valid branch name.", name);
if (resolve_ref(ref.buf, sha1, 1, NULL)) {
- if (!force)
+ if (!force && track == BRANCH_TRACK_OVERRIDE)
+ dont_change_ref = 1;
+ else if (!force)
die("A branch named '%s' already exists.", name);
else if (!is_bare_repository() && !strcmp(head, name))
die("Cannot force update the current branch.");
@@ -153,12 +171,12 @@ void create_branch(const char *head,
switch (dwim_ref(start_name, strlen(start_name), sha1, &real_ref)) {
case 0:
/* Not branching from any existing branch */
- if (track == BRANCH_TRACK_EXPLICIT)
+ if (explicit_tracking)
die("Cannot setup tracking information; starting point is not a branch.");
break;
case 1:
/* Unique completion -- good, only if it is a real ref */
- if (track == BRANCH_TRACK_EXPLICIT && !strcmp(real_ref, "HEAD"))
+ if (explicit_tracking && !strcmp(real_ref, "HEAD"))
die("Cannot setup tracking information; starting point is not a branch.");
break;
default:
@@ -170,9 +188,11 @@ void create_branch(const char *head,
die("Not a valid branch point: '%s'.", start_name);
hashcpy(sha1, commit->object.sha1);
- lock = lock_any_ref_for_update(ref.buf, NULL, 0);
- if (!lock)
- die_errno("Failed to lock ref for update");
+ if (!dont_change_ref) {
+ lock = lock_any_ref_for_update(ref.buf, NULL, 0);
+ if (!lock)
+ die_errno("Failed to lock ref for update");
+ }
if (reflog)
log_all_ref_updates = 1;
@@ -180,15 +200,16 @@ void create_branch(const char *head,
if (forcing)
snprintf(msg, sizeof msg, "branch: Reset from %s",
start_name);
- else
+ else if (!dont_change_ref)
snprintf(msg, sizeof msg, "branch: Created from %s",
start_name);
if (real_ref && track)
setup_tracking(name, real_ref, track);
- if (write_ref_sha1(lock, sha1, msg) < 0)
- die_errno("Failed to write ref");
+ if (!dont_change_ref)
+ if (write_ref_sha1(lock, sha1, msg) < 0)
+ die_errno("Failed to write ref");
strbuf_release(&ref);
free(real_ref);
diff --git a/builtin-branch.c b/builtin-branch.c
index ddc9f2dab7..970cf31811 100644
--- a/builtin-branch.c
+++ b/builtin-branch.c
@@ -564,6 +564,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
OPT__VERBOSE(&verbose),
OPT_SET_INT('t', "track", &track, "set up tracking mode (see git-pull(1))",
BRANCH_TRACK_EXPLICIT),
+ OPT_SET_INT( 0, "set-upstream", &track, "change upstream info",
+ BRANCH_TRACK_OVERRIDE),
OPT_BOOLEAN( 0 , "color", &branch_use_color, "use colored output"),
OPT_SET_INT('r', NULL, &kinds, "act on remote-tracking branches",
REF_REMOTE_BRANCH),
diff --git a/cache.h b/cache.h
index 4b15042c08..7d5c21e3f1 100644
--- a/cache.h
+++ b/cache.h
@@ -553,6 +553,7 @@ enum branch_track {
BRANCH_TRACK_REMOTE,
BRANCH_TRACK_ALWAYS,
BRANCH_TRACK_EXPLICIT,
+ BRANCH_TRACK_OVERRIDE,
};
enum rebase_setup_type {
diff --git a/t/t6040-tracking-info.sh b/t/t6040-tracking-info.sh
index 664b0f8052..1785e178a4 100755
--- a/t/t6040-tracking-info.sh
+++ b/t/t6040-tracking-info.sh
@@ -89,4 +89,25 @@ test_expect_success 'status when tracking annotated tags' '
grep "set up to track" actual &&
git checkout heavytrack
'
+
+test_expect_success 'setup tracking with branch --set-upstream on existing branch' '
+ git branch from-master master &&
+ test_must_fail git config branch.from-master.merge > actual &&
+ git branch --set-upstream from-master master &&
+ git config branch.from-master.merge > actual &&
+ grep -q "^refs/heads/master$" actual
+'
+
+test_expect_success '--set-upstream does not change branch' '
+ git branch from-master2 master &&
+ test_must_fail git config branch.from-master2.merge > actual &&
+ git rev-list from-master2 &&
+ git update-ref refs/heads/from-master2 from-master2^ &&
+ git rev-parse from-master2 >expect2 &&
+ git branch --set-upstream from-master2 master &&
+ git config branch.from-master.merge > actual &&
+ git rev-parse from-master2 >actual2 &&
+ grep -q "^refs/heads/master$" actual &&
+ cmp expect2 actual2
+'
test_done