sha1_file: convert read_loose_object to use struct object_id

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/fsck.c

@@ -513,7 +513,7 @@ static struct object *parse_loose_object(const struct object_id *oid,
 	unsigned long size;
 	int eaten;
 
-	if (read_loose_object(path, oid->hash, &type, &size, &contents) < 0)
+	if (read_loose_object(path, oid, &type, &size, &contents) < 0)
 		return NULL;
 
 	if (!contents && type != OBJ_BLOB)

cache.h

@@ -1241,14 +1241,14 @@ extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned l
 extern int finalize_object_file(const char *tmpfile, const char *filename);
 
 /*
- * Open the loose object at path, check its sha1, and return the contents,
+ * Open the loose object at path, check its hash, and return the contents,
  * type, and size. If the object is a blob, then "contents" may return NULL,
  * to allow streaming of large blobs.
  *
  * Returns 0 on success, negative on error (details may be written to stderr).
  */
 int read_loose_object(const char *path,
-		      const unsigned char *expected_sha1,
+		      const struct object_id *expected_oid,
 		      enum object_type *type,
 		      unsigned long *size,
 		      void **contents);

sha1_file.c

@@ -2176,7 +2176,7 @@ static int check_stream_sha1(git_zstream *stream,
 }
 
 int read_loose_object(const char *path,
-		      const unsigned char *expected_sha1,
+		      const struct object_id *expected_oid,
 		      enum object_type *type,
 		      unsigned long *size,
 		      void **contents)
@@ -2208,19 +2208,19 @@ int read_loose_object(const char *path,
 	}
 
 	if (*type == OBJ_BLOB) {
-		if (check_stream_sha1(&stream, hdr, *size, path, expected_sha1) < 0)
+		if (check_stream_sha1(&stream, hdr, *size, path, expected_oid->hash) < 0)
 			goto out;
 	} else {
-		*contents = unpack_sha1_rest(&stream, hdr, *size, expected_sha1);
+		*contents = unpack_sha1_rest(&stream, hdr, *size, expected_oid->hash);
 		if (!*contents) {
 			error("unable to unpack contents of %s", path);
 			git_inflate_end(&stream);
 			goto out;
 		}
-		if (check_sha1_signature(expected_sha1, *contents,
+		if (check_sha1_signature(expected_oid->hash, *contents,
 					 *size, type_name(*type))) {
 			error("sha1 mismatch for %s (expected %s)", path,
-			      sha1_to_hex(expected_sha1));
+			      oid_to_hex(expected_oid));
 			free(*contents);
 			goto out;
 		}