return refname_match(branch->merge[i]->src, refname);
}
-const char *branch_get_upstream(struct branch *branch)
+__attribute((format (printf,2,3)))
+static const char *error_buf(struct strbuf *err, const char *fmt, ...)
{
- if (!branch || !branch->merge || !branch->merge[0])
- return NULL;
+ if (err) {
+ va_list ap;
+ va_start(ap, fmt);
+ strbuf_vaddf(err, fmt, ap);
+ va_end(ap);
+ }
+ return NULL;
+}
+
+const char *branch_get_upstream(struct branch *branch, struct strbuf *err)
+{
+ if (!branch)
+ return error_buf(err, _("HEAD does not point to a branch"));
+
+ if (!branch->merge || !branch->merge[0]) {
+ /*
+ * no merge config; is it because the user didn't define any,
+ * or because it is not a real branch, and get_branch
+ * auto-vivified it?
+ */
+ if (!ref_exists(branch->refname))
+ return error_buf(err, _("no such branch: '%s'"),
+ branch->name);
+ return error_buf(err,
+ _("no upstream configured for branch '%s'"),
+ branch->name);
+ }
+
+ if (!branch->merge[0]->dst)
+ return error_buf(err,
+ _("upstream branch '%s' not stored as a remote-tracking branch"),
+ branch->merge[0]->src);
+
return branch->merge[0]->dst;
}
+static const char *tracking_for_push_dest(struct remote *remote,
+ const char *refname,
+ struct strbuf *err)
+{
+ char *ret;
+
+ ret = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname);
+ if (!ret)
+ return error_buf(err,
+ _("push destination '%s' on remote '%s' has no local tracking branch"),
+ refname, remote->name);
+ return ret;
+}
+
+static const char *branch_get_push_1(struct branch *branch, struct strbuf *err)
+{
+ struct remote *remote;
+
+ if (!branch)
+ return error_buf(err, _("HEAD does not point to a branch"));
+
+ remote = remote_get(pushremote_for_branch(branch, NULL));
+ if (!remote)
+ return error_buf(err,
+ _("branch '%s' has no remote for pushing"),
+ branch->name);
+
+ if (remote->push_refspec_nr) {
+ char *dst;
+ const char *ret;
+
+ dst = apply_refspecs(remote->push, remote->push_refspec_nr,
+ branch->refname);
+ if (!dst)
+ return error_buf(err,
+ _("push refspecs for '%s' do not include '%s'"),
+ remote->name, branch->name);
+
+ ret = tracking_for_push_dest(remote, dst, err);
+ free(dst);
+ return ret;
+ }
+
+ if (remote->mirror)
+ return tracking_for_push_dest(remote, branch->refname, err);
+
+ switch (push_default) {
+ case PUSH_DEFAULT_NOTHING:
+ return error_buf(err, _("push has no destination (push.default is 'nothing')"));
+
+ case PUSH_DEFAULT_MATCHING:
+ case PUSH_DEFAULT_CURRENT:
+ return tracking_for_push_dest(remote, branch->refname, err);
+
+ case PUSH_DEFAULT_UPSTREAM:
+ return branch_get_upstream(branch, err);
+
+ case PUSH_DEFAULT_UNSPECIFIED:
+ case PUSH_DEFAULT_SIMPLE:
+ {
+ const char *up, *cur;
+
+ up = branch_get_upstream(branch, err);
+ if (!up)
+ return NULL;
+ cur = tracking_for_push_dest(remote, branch->refname, err);
+ if (!cur)
+ return NULL;
+ if (strcmp(cur, up))
+ return error_buf(err,
+ _("cannot resolve 'simple' push to a single destination"));
+ return cur;
+ }
+ }
+
+ die("BUG: unhandled push situation");
+}
+
+const char *branch_get_push(struct branch *branch, struct strbuf *err)
+{
+ if (!branch->push_tracking_ref)
+ branch->push_tracking_ref = branch_get_push_1(branch, err);
+ return branch->push_tracking_ref;
+}
+
static int ignore_symref_update(const char *refname)
{
unsigned char sha1[20];
/*
* Compare a branch with its upstream, and save their differences (number
- * of commits) in *num_ours and *num_theirs.
+ * of commits) in *num_ours and *num_theirs. The name of the upstream branch
+ * (or NULL if no upstream is defined) is returned via *upstream_name, if it
+ * is not itself NULL.
*
- * Return 0 if branch has no upstream (no base), -1 if upstream is missing
- * (with "gone" base), otherwise 1 (with base).
+ * Returns -1 if num_ours and num_theirs could not be filled in (e.g., no
+ * upstream defined, or ref does not exist), 0 otherwise.
*/
-int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs)
+int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs,
+ const char **upstream_name)
{
unsigned char sha1[20];
struct commit *ours, *theirs;
int rev_argc;
/* Cannot stat unless we are marked to build on top of somebody else. */
- base = branch_get_upstream(branch);
+ base = branch_get_upstream(branch, NULL);
+ if (upstream_name)
+ *upstream_name = base;
if (!base)
- return 0;
+ return -1;
/* Cannot stat if what we used to build on no longer exists */
if (read_ref(base, sha1))
/* are we the same? */
if (theirs == ours) {
*num_theirs = *num_ours = 0;
- return 1;
+ return 0;
}
/* Run "rev-list --left-right ours...theirs" internally... */
/* clear object flags smudged by the above traversal */
clear_commit_marks(ours, ALL_REV_FLAGS);
clear_commit_marks(theirs, ALL_REV_FLAGS);
- return 1;
+ return 0;
}
/*
int format_tracking_info(struct branch *branch, struct strbuf *sb)
{
int ours, theirs;
+ const char *full_base;
char *base;
int upstream_is_gone = 0;
- switch (stat_tracking_info(branch, &ours, &theirs)) {
- case 0:
- /* no base */
- return 0;
- case -1:
- /* with "gone" base */
+ if (stat_tracking_info(branch, &ours, &theirs, &full_base) < 0) {
+ if (!full_base)
+ return 0;
upstream_is_gone = 1;
- break;
- default:
- /* with base */
- break;
}
- base = shorten_unambiguous_ref(branch->merge[0]->dst, 0);
+ base = shorten_unambiguous_ref(full_base, 0);
if (upstream_is_gone) {
strbuf_addf(sb,
_("Your branch is based on '%s', but the upstream is gone.\n"),
return 1;
}
-static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
+static int one_local_ref(const char *refname, const struct object_id *oid,
+ int flag, void *cb_data)
{
struct ref ***local_tail = cb_data;
struct ref *ref;
len = strlen(refname) + 1;
ref = xcalloc(1, sizeof(*ref) + len);
- hashcpy(ref->new_sha1, sha1);
+ hashcpy(ref->new_sha1, oid->hash);
memcpy(ref->name, refname, len);
**local_tail = ref;
*local_tail = &ref->next;
struct ref *get_local_heads(void)
{
struct ref *local_refs = NULL, **local_tail = &local_refs;
+
for_each_ref(one_local_ref, &local_tail);
return local_refs;
}
int ref_count;
};
-static int get_stale_heads_cb(const char *refname,
- const unsigned char *sha1, int flags, void *cb_data)
+static int get_stale_heads_cb(const char *refname, const struct object_id *oid,
+ int flags, void *cb_data)
{
struct stale_heads_info *info = cb_data;
struct string_list matches = STRING_LIST_INIT_DUP;
if (stale) {
struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
- hashcpy(ref->new_sha1, sha1);
+ hashcpy(ref->new_sha1, oid->hash);
}
clean_exit:
struct ref *ref, *stale_refs = NULL;
struct string_list ref_names = STRING_LIST_INIT_NODUP;
struct stale_heads_info info;
+
info.ref_names = &ref_names;
info.stale_refs_tail = &stale_refs;
info.refs = refs;