static const char *map_refspec(const char *ref,
struct remote *remote, struct ref *local_refs)
{
struct ref *matched = NULL;
/* Does "ref" uniquely name our ref? */
if (count_refspec_match(ref, local_refs, &matched) != 1)
return ref;
if (remote->push.nr) {
struct refspec_item query;
memset(&query, 0, sizeof(struct refspec_item));
query.src = matched->name;
if (!query_refspecs(&remote->push, &query) && query.dst) {
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "%s%s:%s",
query.force ? "+" : "",
query.src, query.dst);
return strbuf_detach(&buf, NULL);
}
}
if (push_default == PUSH_DEFAULT_UPSTREAM &&
starts_with(matched->name, "refs/heads/")) {
struct branch *branch = branch_get(matched->name + 11);
if (branch->merge_nr == 1 && branch->merge[0]->src) {
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "%s:%s",
ref, branch->merge[0]->src);
return strbuf_detach(&buf, NULL);
}
}
return ref;
}
static int push_check(int argc, const char **argv, const char *prefix)
{
struct remote *remote;
if (argc < 2)
die("submodule--helper push-check requires at least 1 argument");
/*
* The remote must be configured.
* This is to avoid pushing to the exact same URL as the parent.
*/
remote = pushremote_get(argv[1]);
if (!remote || remote->origin == REMOTE_UNCONFIGURED)
die("remote '%s' not configured", argv[1]);
/* Check the refspec */
if (argc > 2) {
int i, refspec_nr = argc - 2;
struct ref *local_refs = get_local_heads();
struct refspec *refspec = parse_push_refspec(refspec_nr,
argv + 2);
for (i = 0; i < refspec_nr; i++) {
struct refspec *rs = refspec + i;
if (rs->pattern || rs->matching)
continue;
/*
* LHS must match a single ref
* NEEDSWORK: add logic to special case 'HEAD' once
* working with submodules in a detached head state
* ceases to be the norm.
*/
if (count_refspec_match(rs->src, local_refs, NULL) != 1)
die("src refspec '%s' must name a ref",
rs->src);
}
free_refspec(refspec_nr, refspec);
}
return 0;
}
static int match_explicit(struct ref *src, struct ref *dst,
struct ref ***dst_tail,
struct refspec *rs)
{
struct ref *matched_src, *matched_dst;
const char *dst_value = rs->dst;
char *dst_guess;
if (rs->pattern || rs->matching)
return 0;
matched_src = matched_dst = NULL;
switch (count_refspec_match(rs->src, src, &matched_src)) {
case 1:
break;
case 0:
/* The source could be in the get_sha1() format
* not a reference name. :refs/other is a
* way to delete 'other' ref at the remote end.
*/
matched_src = try_explicit_object_name(rs->src);
if (!matched_src)
return error("src refspec %s does not match any.", rs->src);
break;
default:
return error("src refspec %s matches more than one.", rs->src);
}
if (!dst_value) {
unsigned char sha1[20];
int flag;
dst_value = resolve_ref(matched_src->name, sha1, 1, &flag);
if (!dst_value ||
((flag & REF_ISSYMREF) &&
prefixcmp(dst_value, "refs/heads/")))
die("%s cannot be resolved to branch.",
matched_src->name);
}
switch (count_refspec_match(dst_value, dst, &matched_dst)) {
case 1:
break;
case 0:
if (!memcmp(dst_value, "refs/", 5))
matched_dst = make_linked_ref(dst_value, dst_tail);
else if((dst_guess = guess_ref(dst_value, matched_src)))
matched_dst = make_linked_ref(dst_guess, dst_tail);
else
error("unable to push to unqualified destination: %s\n"
"The destination refspec neither matches an "
"existing ref on the remote nor\n"
"begins with refs/, and we are unable to "
"guess a prefix based on the source ref.",
dst_value);
break;
default:
matched_dst = NULL;
error("dst refspec %s matches more than one.",
dst_value);
break;
}
if (!matched_dst)
return -1;
if (matched_dst->peer_ref)
return error("dst ref %s receives from more than one src.",
matched_dst->name);
else {
matched_dst->peer_ref = matched_src;
matched_dst->force = rs->force;
}
return 0;
}
