X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;ds=sidebyside;f=remote.c;h=9a88917aab32f32235d0ebaa1ffd0e2f2773a927;hb=acef41c9db33f2261e46e17cca098df3403dd745;hp=bc27a8e3df59915d13bdca357fbe76789caf646e;hpb=6b62816cb12e621c5952f088542bec6dfc7ec5d6;p=git.git

diff --git a/remote.c b/remote.c
index bc27a8e3d..9a88917aa 100644
--- a/remote.c
+++ b/remote.c
@@ -17,6 +17,15 @@ static void add_push_refspec(struct remote *remote, const char *ref)
 	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;
@@ -74,6 +83,9 @@ static void read_remotes_file(struct remote *remote)
 		} else if (!prefixcmp(buffer, "Push:")) {
 			value_list = 1;
 			s = buffer + 5;
+		} else if (!prefixcmp(buffer, "Pull:")) {
+			value_list = 2;
+			s = buffer + 5;
 		} else
 			continue;
 
@@ -93,6 +105,9 @@ static void read_remotes_file(struct remote *remote)
 		case 1:
 			add_push_refspec(remote, xstrdup(s));
 			break;
+		case 2:
+			add_fetch_refspec(remote, xstrdup(s));
+			break;
 		}
 	}
 	fclose(f);
@@ -174,6 +189,8 @@ static int handle_config(const char *key, const char *value)
 		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);
@@ -257,10 +274,101 @@ struct remote *remote_get(const char *name)
 		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 for_each_remote(each_remote_fn fn, void *priv)
+{
+	int i, result = 0;
+	read_config();
+	for (i = 0; i < allocated_remotes && !result; i++) {
+		struct remote *r = remotes[i];
+		if (!r)
+			continue;
+		if (!r->fetch)
+			r->fetch = parse_ref_spec(r->fetch_refspec_nr,
+					r->fetch_refspec);
+		if (!r->push)
+			r->push = parse_ref_spec(r->push_refspec_nr,
+					r->push_refspec);
+		result = fn(r, priv);
+	}
+	return result;
+}
+
+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 find_src = refspec->src == NULL;
+	char *needle, **result;
+	int i;
+
+	if (find_src) {
+		if (refspec->dst == NULL)
+			return error("find_tracking: need either src or dst");
+		needle = refspec->dst;
+		result = &refspec->src;
+	} else {
+		needle = refspec->src;
+		result = &refspec->dst;
+	}
+
+	for (i = 0; i < remote->fetch_refspec_nr; i++) {
+		struct refspec *fetch = &remote->fetch[i];
+		const char *key = find_src ? fetch->dst : fetch->src;
+		const char *value = find_src ? fetch->src : fetch->dst;
+		if (!fetch->dst)
+			continue;
+		if (fetch->pattern) {
+			if (!prefixcmp(needle, key)) {
+				*result = xmalloc(strlen(value) +
+						  strlen(needle) -
+						  strlen(key) + 1);
+				strcpy(*result, value);
+				strcpy(*result + strlen(value),
+				       needle + strlen(key));
+				refspec->force = fetch->force;
+				return 0;
+			}
+		} else if (!strcmp(needle, key)) {
+			*result = xstrdup(value);
+			refspec->force = fetch->force;
+			return 0;
+		}
+	}
+	return -1;
+}
+
+struct ref *alloc_ref(unsigned namelen)
+{
+	struct ref *ret = xmalloc(sizeof(struct ref) + namelen);
+	memset(ret, 0, sizeof(struct ref) + namelen);
+	return ret;
+}
+
+void free_refs(struct ref *ref)
+{
+	struct ref *next;
+	while (ref) {
+		next = ref->next;
+		if (ref->peer_ref)
+			free(ref->peer_ref);
+		free(ref);
+		ref = next;
+	}
+}
+
 static int count_refspec_match(const char *pattern,
 			       struct ref *refs,
 			       struct ref **matched_ref)
@@ -274,7 +382,6 @@ static int count_refspec_match(const char *pattern,
 	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))
@@ -319,11 +426,12 @@ static int count_refspec_match(const char *pattern,
 	}
 }
 
-static void link_dst_tail(struct ref *ref, struct ref ***tail)
+static void tail_link_ref(struct ref *ref, struct ref ***tail)
 {
 	**tail = ref;
+	while (ref->next)
+		ref = ref->next;
 	*tail = &ref->next;
-	**tail = NULL;
 }
 
 static struct ref *try_explicit_object_name(const char *name)
@@ -333,7 +441,7 @@ static struct ref *try_explicit_object_name(const char *name)
 	int len;
 
 	if (!*name) {
-		ref = xcalloc(1, sizeof(*ref) + 20);
+		ref = alloc_ref(20);
 		strcpy(ref->name, "(delete)");
 		hashclr(ref->new_sha1);
 		return ref;
@@ -341,92 +449,105 @@ static struct ref *try_explicit_object_name(const char *name)
 	if (get_sha1(name, sha1))
 		return NULL;
 	len = strlen(name) + 1;
-	ref = xcalloc(1, sizeof(*ref) + len);
+	ref = alloc_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)
+static struct ref *make_linked_ref(const char *name, struct ref ***tail)
 {
-	int i, errs;
-	for (i = errs = 0; i < rs_nr; i++) {
-		struct ref *matched_src, *matched_dst;
+	struct ref *ret;
+	size_t len;
 
-		const char *dst_value = rs[i].dst;
-		if (dst_value == NULL)
-			dst_value = rs[i].src;
+	len = strlen(name) + 1;
+	ret = alloc_ref(len);
+	memcpy(ret->name, name, len);
+	tail_link_ref(ret, tail);
+	return ret;
+}
 
-		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);
+static int match_explicit(struct ref *src, struct ref *dst,
+			  struct ref ***dst_tail,
+			  struct refspec *rs,
+			  int errs)
+{
+	struct ref *matched_src, *matched_dst;
+
+	const char *dst_value = rs->dst;
+
+	if (rs->pattern)
+		return errs;
+
+	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)
 			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;
-		}
+		error("src refspec %s does not match any.",
+		      rs->src);
+		break;
+	default:
+		matched_src = NULL;
+		error("src refspec %s matches more than one.",
+		      rs->src);
+		break;
+	}
+
+	if (!matched_src)
+		errs = 1;
+
+	if (!dst_value) {
+		if (!matched_src)
+			return errs;
+		dst_value = 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
+			error("dst refspec %s does not match any "
+			      "existing ref on the remote and does "
+			      "not start with refs/.", dst_value);
+		break;
+	default:
+		matched_dst = NULL;
+		error("dst refspec %s matches more than one.",
+		      dst_value);
+		break;
+	}
+	if (errs || matched_dst == NULL)
+		return 1;
+	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->force;
+	}
+	return errs;
+}
+
+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++)
+		errs |= match_explicit(src, dst, dst_tail, &rs[i], errs);
 	return -errs;
 }
 
@@ -438,32 +559,80 @@ static struct ref *find_ref_by_name(struct ref *list, const char *name)
 	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;
+}
+
+/*
+ * Note. This is used only by "push"; refspec matching rules for
+ * push and fetch are subtly different, so do not try to reuse it
+ * without thinking.
+ */
 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 (nr_refspec)
-		return match_explicit_refs(src, dst, dst_tail, rs, nr_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;
-		dst_peer = find_ref_by_name(dst, src->name);
-		if ((dst_peer && dst_peer->peer_ref) || (!dst_peer && !all))
+		if (nr_refspec) {
+			pat = check_pattern_match(rs, nr_refspec, src);
+			if (!pat)
+				continue;
+		}
+		else if (prefixcmp(src->name, "refs/heads/"))
+			/*
+			 * "matching refs"; traditionally we pushed everything
+			 * including refs outside refs/heads/ hierarchy, but
+			 * that does not make much sense these days.
+			 */
 			continue;
+
+		if (pat) {
+			const char *dst_side = pat->dst ? pat->dst : pat->src;
+			dst_name = xmalloc(strlen(dst_side) +
+					   strlen(src->name) -
+					   strlen(pat->src) + 2);
+			strcpy(dst_name, dst_side);
+			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(src->name) + 1;
-			dst_peer = xcalloc(1, sizeof(*dst_peer) + len);
-			memcpy(dst_peer->name, src->name, len);
+			dst_peer = make_linked_ref(dst_name, dst_tail);
 			hashcpy(dst_peer->new_sha1, src->new_sha1);
-			link_dst_tail(dst_peer, dst_tail);
 		}
 		dst_peer->peer_ref = src;
+		if (pat)
+			dst_peer->force = pat->force;
+	free_name:
+		free(dst_name);
 	}
 	return 0;
 }