[PATCH 4/5] support reading uncompressed loose object

@@ -1985,6 +1985,16 @@ static int sha1_loose_object_info(const unsigned char *sha1, unsigned long *size
 	map = map_sha1_file(sha1, &mapsize);
 	if (!map)
 		return error("unable to find %s", sha1_to_hex(sha1));
+
+	/*
+	 * Is it an uncompressed loose objects?
+	 */
+	if ((status = parse_sha1_header(map, mapsize, &size)) >= 0) {
+		if (sizep)
+			*sizep = size;
+		goto L_leave;
+	}
+
 	if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
 		status = error("unable to unpack %s header",
 			       sha1_to_hex(sha1));

@@ -1993,6 +2003,8 @@ static int sha1_loose_object_info(const unsigned char *sha1, unsigned long *size
 	else if (sizep)
 		*sizep = size;
 	inflateEnd(&stream);
+
+L_leave:
 	munmap(map, mapsize);
 	return status;
 }

@@ -2124,7 +2136,13 @@ void *read_object(const unsigned char *sha1, enum object_type *type,
 		return buf;
 	map = map_sha1_file(sha1, &mapsize);
 	if (map) {
-		buf = unpack_sha1_file(map, mapsize, type, size, sha1);
+		/*
+		 * Is it an uncompressed loose object?
+		 */
+		if ((*type = parse_sha1_header(map, mapsize, size)) >= 0)
+			buf = xmemdupz(map + strlen(map) + 1, *size);
+		else
+			buf = unpack_sha1_file(map, mapsize, type, size, sha1);
 		munmap(map, mapsize);
 		return buf;
 	}