push: convert to use struct refspec

Convert the refspecs in builtin/push.c to be stored in a 'struct
refspec' instead of being stored in a list of 'struct refspec_item's.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/push.c

@@ -57,19 +57,10 @@ static enum transport_family family;
 
 static struct push_cas_option cas;
 
-static const char **refspec;
-static int refspec_nr;
-static int refspec_alloc;
+static struct refspec rs = REFSPEC_INIT_PUSH;
 
 static struct string_list push_options_config = STRING_LIST_INIT_DUP;
 
-static void add_refspec(const char *ref)
-{
-	refspec_nr++;
-	ALLOC_GROW(refspec, refspec_nr, refspec_alloc);
-	refspec[refspec_nr-1] = ref;
-}
-
 static const char *map_refspec(const char *ref,
 			       struct remote *remote, struct ref *local_refs)
 {
@@ -138,7 +129,7 @@ static void set_refspecs(const char **refs, int nr, const char *repo)
 			}
 			ref = map_refspec(ref, remote, local_refs);
 		}
-		add_refspec(ref);
+		refspec_append(&rs, ref);
 	}
 }
 
@@ -226,7 +217,7 @@ static void setup_push_upstream(struct remote *remote, struct branch *branch,
 	}
 
 	strbuf_addf(&refspec, "%s:%s", branch->refname, branch->merge[0]->src);
-	add_refspec(refspec.buf);
+	refspec_append(&rs, refspec.buf);
 }
 
 static void setup_push_current(struct remote *remote, struct branch *branch)
@@ -236,7 +227,7 @@ static void setup_push_current(struct remote *remote, struct branch *branch)
 	if (!branch)
 		die(_(message_detached_head_die), remote->name);
 	strbuf_addf(&refspec, "%s:%s", branch->refname, branch->refname);
-	add_refspec(refspec.buf);
+	refspec_append(&rs, refspec.buf);
 }
 
 static int is_workflow_triangular(struct remote *remote)
@@ -253,7 +244,7 @@ static void setup_default_push_refspecs(struct remote *remote)
 	switch (push_default) {
 	default:
 	case PUSH_DEFAULT_MATCHING:
-		add_refspec(":");
+		refspec_append(&rs, ":");
 		break;
 
 	case PUSH_DEFAULT_UNSPECIFIED:
@@ -341,7 +332,8 @@ static void advise_ref_needs_force(void)
 	advise(_(message_advice_ref_needs_force));
 }
 
-static int push_with_options(struct transport *transport, int flags)
+static int push_with_options(struct transport *transport, struct refspec *rs,
+			     int flags)
 {
 	int err;
 	unsigned int reject_reasons;
@@ -363,7 +355,7 @@ static int push_with_options(struct transport *transport, int flags)
 
 	if (verbosity > 0)
 		fprintf(stderr, _("Pushing to %s\n"), transport->url);
-	err = transport_push(transport, refspec_nr, refspec, flags,
+	err = transport_push(transport, rs->raw_nr, rs->raw, flags,
 			     &reject_reasons);
 	if (err != 0) {
 		fprintf(stderr, "%s", push_get_color(PUSH_COLOR_ERROR));
@@ -397,6 +389,7 @@ static int do_push(const char *repo, int flags,
 	struct remote *remote = pushremote_get(repo);
 	const char **url;
 	int url_nr;
+	struct refspec *push_refspec = &rs;
 
 	if (!remote) {
 		if (repo)
@@ -417,10 +410,9 @@ static int do_push(const char *repo, int flags,
 	if (push_options->nr)
 		flags |= TRANSPORT_PUSH_OPTIONS;
 
-	if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
-		if (remote->push.raw_nr) {
-			refspec = remote->push.raw;
-			refspec_nr = remote->push.raw_nr;
+	if (!push_refspec->nr && !(flags & TRANSPORT_PUSH_ALL)) {
+		if (remote->push.nr) {
+			push_refspec = &remote->push;
 		} else if (!(flags & TRANSPORT_PUSH_MIRROR))
 			setup_default_push_refspecs(remote);
 	}
@@ -432,7 +424,7 @@ static int do_push(const char *repo, int flags,
 				transport_get(remote, url[i]);
 			if (flags & TRANSPORT_PUSH_OPTIONS)
 				transport->push_options = push_options;
-			if (push_with_options(transport, flags))
+			if (push_with_options(transport, push_refspec, flags))
 				errs++;
 		}
 	} else {
@@ -440,7 +432,7 @@ static int do_push(const char *repo, int flags,
 			transport_get(remote, NULL);
 		if (flags & TRANSPORT_PUSH_OPTIONS)
 			transport->push_options = push_options;
-		if (push_with_options(transport, flags))
+		if (push_with_options(transport, push_refspec, flags))
 			errs++;
 	}
 	return !!errs;
@@ -631,7 +623,7 @@ int cmd_push(int argc, const char **argv, const char *prefix)
 		flags |= TRANSPORT_RECURSE_SUBMODULES_ONLY;
 
 	if (tags)
-		add_refspec("refs/tags/*");
+		refspec_append(&rs, "refs/tags/*");
 
 	if (argc > 0) {
 		repo = argv[0];