summaryrefslogtreecommitdiff
path: root/branch.c
diff options
context:
space:
mode:
Diffstat (limited to 'branch.c')
-rw-r--r--branch.c163
1 files changed, 125 insertions, 38 deletions
diff --git a/branch.c b/branch.c
index 05ef3f5c9c..2bef1e7e71 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 : ".");
@@ -64,25 +74,33 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
strbuf_addf(&key, "branch.%s.rebase", local);
git_config_set(key.buf, "true");
}
+ strbuf_release(&key);
if (flag & BRANCH_CONFIG_VERBOSE) {
- strbuf_reset(&key);
-
- 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 (origin)
- strbuf_addf(&key, " from %s", origin);
- }
+ if (remote_is_branch && origin)
+ printf(rebasing ?
+ "Branch %s set up to track remote branch %s from %s by rebasing.\n" :
+ "Branch %s set up to track remote branch %s from %s.\n",
+ local, shortname, origin);
+ else if (remote_is_branch && !origin)
+ printf(rebasing ?
+ "Branch %s set up to track local branch %s by rebasing.\n" :
+ "Branch %s set up to track local branch %s.\n",
+ local, shortname);
+ else if (!remote_is_branch && origin)
+ printf(rebasing ?
+ "Branch %s set up to track remote ref %s by rebasing.\n" :
+ "Branch %s set up to track remote ref %s.\n",
+ local, remote);
+ else if (!remote_is_branch && !origin)
+ printf(rebasing ?
+ "Branch %s set up to track local ref %s by rebasing.\n" :
+ "Branch %s set up to track local ref %s.\n",
+ local, remote);
else
- strbuf_addf(&key, " ref %s", remote);
- printf("Branch %s set up to track %s%s.\n",
- local, key.buf,
- rebasing ? " by rebasing" : "");
+ die("BUG: impossible combination of %d and %p",
+ remote_is_branch, origin);
}
- strbuf_release(&key);
}
/*
@@ -91,9 +109,10 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
* config.
*/
static int setup_tracking(const char *new_ref, const char *orig_ref,
- enum branch_track track)
+ enum branch_track track, int quiet)
{
struct tracking tracking;
+ int config_flags = quiet ? 0 : BRANCH_CONFIG_VERBOSE;
if (strlen(new_ref) > 1024 - 7 - 7 - 1)
return error("Tracking not set up: name too long: %s",
@@ -108,6 +127,7 @@ 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;
@@ -117,33 +137,90 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
return error("Not tracking: ambiguous information for ref %s",
orig_ref);
- install_branch_config(BRANCH_CONFIG_VERBOSE, new_ref, tracking.remote,
+ install_branch_config(config_flags, new_ref, tracking.remote,
tracking.src ? tracking.src : orig_ref);
free(tracking.src);
return 0;
}
+struct branch_desc_cb {
+ const char *config_name;
+ const char *value;
+};
+
+static int read_branch_desc_cb(const char *var, const char *value, void *cb)
+{
+ struct branch_desc_cb *desc = cb;
+ if (strcmp(desc->config_name, var))
+ return 0;
+ free((char *)desc->value);
+ return git_config_string(&desc->value, var, value);
+}
+
+int read_branch_desc(struct strbuf *buf, const char *branch_name)
+{
+ struct branch_desc_cb cb;
+ struct strbuf name = STRBUF_INIT;
+ strbuf_addf(&name, "branch.%s.description", branch_name);
+ cb.config_name = name.buf;
+ cb.value = NULL;
+ if (git_config(read_branch_desc_cb, &cb) < 0) {
+ strbuf_release(&name);
+ return -1;
+ }
+ if (cb.value)
+ strbuf_addstr(buf, cb.value);
+ strbuf_release(&name);
+ return 0;
+}
+
+int validate_new_branchname(const char *name, struct strbuf *ref,
+ int force, int attr_only)
+{
+ if (strbuf_check_branch_ref(ref, name))
+ die("'%s' is not a valid branch name.", name);
+
+ if (!ref_exists(ref->buf))
+ return 0;
+ else if (!force && !attr_only)
+ die("A branch named '%s' already exists.", ref->buf + strlen("refs/heads/"));
+
+ if (!attr_only) {
+ const char *head;
+ unsigned char sha1[20];
+
+ head = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
+ if (!is_bare_repository() && head && !strcmp(head, ref->buf))
+ die("Cannot force update the current branch.");
+ }
+ return 1;
+}
+
void create_branch(const char *head,
const char *name, const char *start_name,
- int force, int reflog, enum branch_track track)
+ int force, int reflog, int clobber_head,
+ int quiet, 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 (strbuf_check_branch_ref(&ref, name))
- die("'%s' is not a valid branch name.", name);
+ if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
+ explicit_tracking = 1;
- if (resolve_ref(ref.buf, sha1, 1, NULL)) {
+ if (validate_new_branchname(name, &ref, force,
+ track == BRANCH_TRACK_OVERRIDE ||
+ clobber_head)) {
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.");
- forcing = 1;
+ dont_change_ref = 1;
+ else
+ forcing = 1;
}
real_ref = NULL;
@@ -153,13 +230,18 @@ 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"))
- die("Cannot setup tracking information; starting point is not a branch.");
+ /* Unique completion -- good, only if it is a real branch */
+ if (prefixcmp(real_ref, "refs/heads/") &&
+ prefixcmp(real_ref, "refs/remotes/")) {
+ if (explicit_tracking)
+ die("Cannot setup tracking information; starting point is not a branch.");
+ else
+ real_ref = NULL;
+ }
break;
default:
die("Ambiguous object name: '%s'.", start_name);
@@ -170,25 +252,28 @@ 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;
if (forcing)
- snprintf(msg, sizeof msg, "branch: Reset from %s",
+ snprintf(msg, sizeof msg, "branch: Reset to %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);
+ setup_tracking(ref.buf+11, real_ref, track, quiet);
- 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);
@@ -196,6 +281,8 @@ void create_branch(const char *head,
void remove_branch_state(void)
{
+ unlink(git_path("CHERRY_PICK_HEAD"));
+ unlink(git_path("REVERT_HEAD"));
unlink(git_path("MERGE_HEAD"));
unlink(git_path("MERGE_RR"));
unlink(git_path("MERGE_MSG"));
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-16 03:06:25 +0000