http-backend: rewrite to take an object_id argument

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

http-backend.c

@@ -350,16 +350,16 @@ static void run_service(const char **argv)
 		exit(1);
 }
 
-static int show_text_ref(const char *name, const unsigned char *sha1,
-	int flag, void *cb_data)
+static int show_text_ref(const char *name, const struct object_id *oid,
+			 int flag, void *cb_data)
 {
 	const char *name_nons = strip_namespace(name);
 	struct strbuf *buf = cb_data;
-	struct object *o = parse_object(sha1);
+	struct object *o = parse_object(oid->hash);
 	if (!o)
 		return 0;
 
-	strbuf_addf(buf, "%s\t%s\n", sha1_to_hex(sha1), name_nons);
+	strbuf_addf(buf, "%s\t%s\n", oid_to_hex(oid), name_nons);
 	if (o->type == OBJ_TAG) {
 		o = deref_tag(o, name, 0);
 		if (!o)
@@ -395,18 +395,15 @@ static void get_info_refs(char *arg)
 		run_service(argv);
 
 	} else {
-		struct each_ref_fn_sha1_adapter wrapped_show_text_ref =
-			{show_text_ref, &buf};
-
 		select_getanyfile();
-		for_each_namespaced_ref(each_ref_fn_adapter, &wrapped_show_text_ref);
+		for_each_namespaced_ref(show_text_ref, &buf);
 		send_strbuf("text/plain", &buf);
 	}
 	strbuf_release(&buf);
 }
 
-static int show_head_ref(const char *refname, const unsigned char *sha1,
-	int flag, void *cb_data)
+static int show_head_ref(const char *refname, const struct object_id *oid,
+			 int flag, void *cb_data)
 {
 	struct strbuf *buf = cb_data;
 
@@ -419,7 +416,7 @@ static int show_head_ref(const char *refname, const unsigned char *sha1,
 
 		strbuf_addf(buf, "ref: %s\n", target_nons);
 	} else {
-		strbuf_addf(buf, "%s\n", sha1_to_hex(sha1));
+		strbuf_addf(buf, "%s\n", oid_to_hex(oid));
 	}
 
 	return 0;
@@ -428,11 +425,9 @@ static int show_head_ref(const char *refname, const unsigned char *sha1,
 static void get_head(char *arg)
 {
 	struct strbuf buf = STRBUF_INIT;
-	struct each_ref_fn_sha1_adapter wrapped_show_head_ref =
-		{show_head_ref, &buf};
 
 	select_getanyfile();
-	head_ref_namespaced(each_ref_fn_adapter, &wrapped_show_head_ref);
+	head_ref_namespaced(show_head_ref, &buf);
 	send_strbuf("text/plain", &buf);
 	strbuf_release(&buf);
 }