![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/remote.c b/remote.c
index b032e81ac811e974ad6ff7fcd644922086499021..ed62a62fa0d5eab7d154233f94e4dad1fc9fbe2f 100644 (file)
--- a/remote.c
+++ b/remote.c
remote->push_refspec_nr = nr;
}
+static void add_fetch_refspec(struct remote *remote, const char *ref)
+{
+ int nr = remote->fetch_refspec_nr + 1;
+ remote->fetch_refspec =
+ xrealloc(remote->fetch_refspec, nr * sizeof(char *));
+ remote->fetch_refspec[nr-1] = ref;
+ remote->fetch_refspec_nr = nr;
+}
+
static void add_uri(struct remote *remote, const char *uri)
{
int nr = remote->uri_nr + 1;
} else if (!prefixcmp(buffer, "Push:")) {
value_list = 1;
s = buffer + 5;
+ } else if (!prefixcmp(buffer, "Pull:")) {
+ value_list = 2;
+ s = buffer + 5;
} else
continue;
case 1:
add_push_refspec(remote, xstrdup(s));
break;
+ case 2:
+ add_fetch_refspec(remote, xstrdup(s));
+ break;
}
}
fclose(f);
add_uri(remote, xstrdup(value));
} else if (!strcmp(subkey, ".push")) {
add_push_refspec(remote, xstrdup(value));
+ } else if (!strcmp(subkey, ".fetch")) {
+ add_fetch_refspec(remote, xstrdup(value));
} else if (!strcmp(subkey, ".receivepack")) {
if (!remote->receivepack)
remote->receivepack = xstrdup(value);
git_config(handle_config);
}
+static struct refspec *parse_ref_spec(int nr_refspec, const char **refspec)
+{
+ int i;
+ struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
+ for (i = 0; i < nr_refspec; i++) {
+ const char *sp, *ep, *gp;
+ sp = refspec[i];
+ if (*sp == '+') {
+ rs[i].force = 1;
+ sp++;
+ }
+ gp = strchr(sp, '*');
+ ep = strchr(sp, ':');
+ if (gp && ep && gp > ep)
+ gp = NULL;
+ if (ep) {
+ if (ep[1]) {
+ const char *glob = strchr(ep + 1, '*');
+ if (!glob)
+ gp = NULL;
+ if (gp)
+ rs[i].dst = xstrndup(ep + 1,
+ glob - ep - 1);
+ else
+ rs[i].dst = xstrdup(ep + 1);
+ }
+ } else {
+ ep = sp + strlen(sp);
+ }
+ if (gp) {
+ rs[i].pattern = 1;
+ ep = gp;
+ }
+ rs[i].src = xstrndup(sp, ep - sp);
+ }
+ return rs;
+}
+
struct remote *remote_get(const char *name)
{
struct remote *ret;
add_uri(ret, name);
if (!ret->uri)
return NULL;
+ ret->fetch = parse_ref_spec(ret->fetch_refspec_nr, ret->fetch_refspec);
+ ret->push = parse_ref_spec(ret->push_refspec_nr, ret->push_refspec);
return ret;
}
+
+int remote_has_uri(struct remote *remote, const char *uri)
+{
+ int i;
+ for (i = 0; i < remote->uri_nr; i++) {
+ if (!strcmp(remote->uri[i], uri))
+ return 1;
+ }
+ return 0;
+}
+
+int remote_find_tracking(struct remote *remote, struct refspec *refspec)
+{
+ int i;
+ for (i = 0; i < remote->fetch_refspec_nr; i++) {
+ struct refspec *fetch = &remote->fetch[i];
+ if (!fetch->dst)
+ continue;
+ if (fetch->pattern) {
+ if (!prefixcmp(refspec->src, fetch->src)) {
+ refspec->dst =
+ xmalloc(strlen(fetch->dst) +
+ strlen(refspec->src) -
+ strlen(fetch->src) + 1);
+ strcpy(refspec->dst, fetch->dst);
+ strcpy(refspec->dst + strlen(fetch->dst),
+ refspec->src + strlen(fetch->src));
+ refspec->force = fetch->force;
+ return 0;
+ }
+ } else {
+ if (!strcmp(refspec->src, fetch->src)) {
+ refspec->dst = xstrdup(fetch->dst);
+ refspec->force = fetch->force;
+ return 0;
+ }
+ }
+ }
+ refspec->dst = NULL;
+ return -1;
+}
+
+static int count_refspec_match(const char *pattern,
+ struct ref *refs,
+ struct ref **matched_ref)
+{
+ int patlen = strlen(pattern);
+ struct ref *matched_weak = NULL;
+ struct ref *matched = NULL;
+ int weak_match = 0;
+ int match = 0;
+
+ for (weak_match = match = 0; refs; refs = refs->next) {
+ char *name = refs->name;
+ int namelen = strlen(name);
+ int weak_match;
+
+ if (namelen < patlen ||
+ memcmp(name + namelen - patlen, pattern, patlen))
+ continue;
+ if (namelen != patlen && name[namelen - patlen - 1] != '/')
+ continue;
+
+ /* A match is "weak" if it is with refs outside
+ * heads or tags, and did not specify the pattern
+ * in full (e.g. "refs/remotes/origin/master") or at
+ * least from the toplevel (e.g. "remotes/origin/master");
+ * otherwise "git push $URL master" would result in
+ * ambiguity between remotes/origin/master and heads/master
+ * at the remote site.
+ */
+ if (namelen != patlen &&
+ patlen != namelen - 5 &&
+ prefixcmp(name, "refs/heads/") &&
+ prefixcmp(name, "refs/tags/")) {
+ /* We want to catch the case where only weak
+ * matches are found and there are multiple
+ * matches, and where more than one strong
+ * matches are found, as ambiguous. One
+ * strong match with zero or more weak matches
+ * are acceptable as a unique match.
+ */
+ matched_weak = refs;
+ weak_match++;
+ }
+ else {
+ matched = refs;
+ match++;
+ }
+ }
+ if (!matched) {
+ *matched_ref = matched_weak;
+ return weak_match;
+ }
+ else {
+ *matched_ref = matched;
+ return match;
+ }
+}
+
+static void link_dst_tail(struct ref *ref, struct ref ***tail)
+{
+ **tail = ref;
+ *tail = &ref->next;
+ **tail = NULL;
+}
+
+static struct ref *try_explicit_object_name(const char *name)
+{
+ unsigned char sha1[20];
+ struct ref *ref;
+ int len;
+
+ if (!*name) {
+ ref = xcalloc(1, sizeof(*ref) + 20);
+ strcpy(ref->name, "(delete)");
+ hashclr(ref->new_sha1);
+ return ref;
+ }
+ if (get_sha1(name, sha1))
+ return NULL;
+ len = strlen(name) + 1;
+ ref = xcalloc(1, sizeof(*ref) + len);
+ memcpy(ref->name, name, len);
+ hashcpy(ref->new_sha1, sha1);
+ return ref;
+}
+
+static int match_explicit_refs(struct ref *src, struct ref *dst,
+ struct ref ***dst_tail, struct refspec *rs,
+ int rs_nr)
+{
+ int i, errs;
+ for (i = errs = 0; i < rs_nr; i++) {
+ struct ref *matched_src, *matched_dst;
+
+ const char *dst_value = rs[i].dst;
+
+ if (rs[i].pattern)
+ continue;
+
+ if (dst_value == NULL)
+ dst_value = rs[i].src;
+
+ matched_src = matched_dst = NULL;
+ switch (count_refspec_match(rs[i].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[i].src);
+ if (matched_src)
+ break;
+ errs = 1;
+ error("src refspec %s does not match any.",
+ rs[i].src);
+ break;
+ default:
+ errs = 1;
+ error("src refspec %s matches more than one.",
+ rs[i].src);
+ break;
+ }
+ switch (count_refspec_match(dst_value, dst, &matched_dst)) {
+ case 1:
+ break;
+ case 0:
+ if (!memcmp(dst_value, "refs/", 5)) {
+ int len = strlen(dst_value) + 1;
+ matched_dst = xcalloc(1, sizeof(*dst) + len);
+ memcpy(matched_dst->name, dst_value, len);
+ link_dst_tail(matched_dst, dst_tail);
+ }
+ else if (!strcmp(rs[i].src, dst_value) &&
+ matched_src) {
+ /* pushing "master:master" when
+ * remote does not have master yet.
+ */
+ int len = strlen(matched_src->name) + 1;
+ matched_dst = xcalloc(1, sizeof(*dst) + len);
+ memcpy(matched_dst->name, matched_src->name,
+ len);
+ link_dst_tail(matched_dst, dst_tail);
+ }
+ else {
+ errs = 1;
+ error("dst refspec %s does not match any "
+ "existing ref on the remote and does "
+ "not start with refs/.", dst_value);
+ }
+ break;
+ default:
+ errs = 1;
+ error("dst refspec %s matches more than one.",
+ dst_value);
+ break;
+ }
+ if (errs)
+ continue;
+ if (matched_dst->peer_ref) {
+ errs = 1;
+ error("dst ref %s receives from more than one src.",
+ matched_dst->name);
+ }
+ else {
+ matched_dst->peer_ref = matched_src;
+ matched_dst->force = rs[i].force;
+ }
+ }
+ return -errs;
+}
+
+static struct ref *find_ref_by_name(struct ref *list, const char *name)
+{
+ for ( ; list; list = list->next)
+ if (!strcmp(list->name, name))
+ return list;
+ return NULL;
+}
+
+static const struct refspec *check_pattern_match(const struct refspec *rs,
+ int rs_nr,
+ const struct ref *src)
+{
+ int i;
+ for (i = 0; i < rs_nr; i++) {
+ if (rs[i].pattern && !prefixcmp(src->name, rs[i].src))
+ return rs + i;
+ }
+ return NULL;
+}
+
+int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
+ int nr_refspec, char **refspec, int all)
+{
+ struct refspec *rs =
+ parse_ref_spec(nr_refspec, (const char **) refspec);
+
+ if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec))
+ return -1;
+
+ /* pick the remainder */
+ for ( ; src; src = src->next) {
+ struct ref *dst_peer;
+ const struct refspec *pat = NULL;
+ char *dst_name;
+ if (src->peer_ref)
+ continue;
+ if (nr_refspec) {
+ pat = check_pattern_match(rs, nr_refspec, src);
+ if (!pat)
+ continue;
+ }
+
+ if (pat) {
+ dst_name = xmalloc(strlen(pat->dst) +
+ strlen(src->name) -
+ strlen(pat->src) + 2);
+ strcpy(dst_name, pat->dst);
+ strcat(dst_name, src->name + strlen(pat->src));
+ } else
+ dst_name = xstrdup(src->name);
+ dst_peer = find_ref_by_name(dst, dst_name);
+ if (dst_peer && dst_peer->peer_ref)
+ /* We're already sending something to this ref. */
+ goto free_name;
+ if (!dst_peer && !nr_refspec && !all)
+ /* Remote doesn't have it, and we have no
+ * explicit pattern, and we don't have
+ * --all. */
+ goto free_name;
+ if (!dst_peer) {
+ /* Create a new one and link it */
+ int len = strlen(dst_name) + 1;
+ dst_peer = xcalloc(1, sizeof(*dst_peer) + len);
+ memcpy(dst_peer->name, dst_name, len);
+ hashcpy(dst_peer->new_sha1, src->new_sha1);
+ link_dst_tail(dst_peer, dst_tail);
+ }
+ dst_peer->peer_ref = src;
+ free_name:
+ free(dst_name);
+ }
+ return 0;
+}