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-rw-r--r--branch.c113
1 files changed, 83 insertions, 30 deletions
diff --git a/branch.c b/branch.c
index b1e59f2196..9e1f63ed8d 100644
--- a/branch.c
+++ b/branch.c
@@ -32,21 +32,69 @@ static int find_tracked_branch(struct remote *remote, void *priv)
return 0;
}
-static int should_setup_rebase(const struct tracking *tracking)
+static int should_setup_rebase(const char *origin)
{
switch (autorebase) {
case AUTOREBASE_NEVER:
return 0;
case AUTOREBASE_LOCAL:
- return tracking->remote == NULL;
+ return origin == NULL;
case AUTOREBASE_REMOTE:
- return tracking->remote != NULL;
+ return origin != NULL;
case AUTOREBASE_ALWAYS:
return 1;
}
return 0;
}
+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 : ".");
+
+ strbuf_reset(&key);
+ strbuf_addf(&key, "branch.%s.merge", local);
+ git_config_set(key.buf, remote);
+
+ if (rebasing) {
+ strbuf_reset(&key);
+ strbuf_addf(&key, "branch.%s.rebase", local);
+ git_config_set(key.buf, "true");
+ }
+
+ if (flag & BRANCH_CONFIG_VERBOSE) {
+ strbuf_reset(&key);
+
+ strbuf_addstr(&key, origin ? "remote" : "local");
+
+ /* Are we tracking a proper "branch"? */
+ if (remote_is_branch) {
+ strbuf_addf(&key, " branch %s", shortname);
+ if (origin)
+ strbuf_addf(&key, " from %s", origin);
+ }
+ else
+ strbuf_addf(&key, " ref %s", remote);
+ printf("Branch %s set up to track %s%s.\n",
+ local, key.buf,
+ rebasing ? " by rebasing" : "");
+ }
+ strbuf_release(&key);
+}
+
/*
* This is called when new_ref is branched off of orig_ref, and tries
* to infer the settings for branch.<new_ref>.{remote,merge} from the
@@ -55,7 +103,6 @@ static int should_setup_rebase(const struct tracking *tracking)
static int setup_tracking(const char *new_ref, const char *orig_ref,
enum branch_track track)
{
- char key[1024];
struct tracking tracking;
if (strlen(new_ref) > 1024 - 7 - 7 - 1)
@@ -71,6 +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;
@@ -80,19 +128,10 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
return error("Not tracking: ambiguous information for ref %s",
orig_ref);
- sprintf(key, "branch.%s.remote", new_ref);
- git_config_set(key, tracking.remote ? tracking.remote : ".");
- sprintf(key, "branch.%s.merge", new_ref);
- git_config_set(key, tracking.src ? tracking.src : orig_ref);
- printf("Branch %s set up to track %s branch %s.\n", new_ref,
- tracking.remote ? "remote" : "local", orig_ref);
- if (should_setup_rebase(&tracking)) {
- sprintf(key, "branch.%s.rebase", new_ref);
- git_config_set(key, "true");
- printf("This branch will rebase on pull.\n");
- }
- free(tracking.src);
+ install_branch_config(BRANCH_CONFIG_VERBOSE, new_ref, tracking.remote,
+ tracking.src ? tracking.src : orig_ref);
+ free(tracking.src);
return 0;
}
@@ -100,18 +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, ref[PATH_MAX], msg[PATH_MAX + 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;
- snprintf(ref, sizeof ref, "refs/heads/%s", name);
- if (check_ref_format(ref))
+ if (strbuf_check_branch_ref(&ref, name))
die("'%s' is not a valid branch name.", name);
- if (resolve_ref(ref, sha1, 1, NULL)) {
- if (!force)
+ if (resolve_ref(ref.buf, sha1, 1, NULL)) {
+ 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.");
@@ -125,11 +171,13 @@ 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 */
+ /* Unique completion -- good, only if it is a real ref */
+ if (explicit_tracking && !strcmp(real_ref, "HEAD"))
+ die("Cannot setup tracking information; starting point is not a branch.");
break;
default:
die("Ambiguous object name: '%s'.", start_name);
@@ -140,9 +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, NULL, 0);
- if (!lock)
- die("Failed to lock ref for update: %s.", strerror(errno));
+ 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;
@@ -150,16 +200,18 @@ 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("Failed to write ref: %s.", strerror(errno));
+ if (!dont_change_ref)
+ if (write_ref_sha1(lock, sha1, msg) < 0)
+ die_errno("Failed to write ref");
+ strbuf_release(&ref);
free(real_ref);
}
@@ -168,5 +220,6 @@ void remove_branch_state(void)
unlink(git_path("MERGE_HEAD"));
unlink(git_path("MERGE_RR"));
unlink(git_path("MERGE_MSG"));
+ unlink(git_path("MERGE_MODE"));
unlink(git_path("SQUASH_MSG"));
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 05:49:21 +0000