sha1_object_info(): be consistent with read_sha1_file()

We used to try loose objects first with sha1_object_info(), but packed
objects first with read_sha1_file(). Now, prefer packed objects over loose
ones with sha1_object_info(), too.

Usually the old behaviour would pose no problem, but when you tried to fix
a fscked up repository by inserting a known-good pack,

git cat-file $(git cat-file -t <sha1>) <sha1>

could fail, even when

git cat-file blob <sha1>

would _not_ fail. Worse, a repack would fail, too.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/sha1_file.c b/sha1_file.c
index 09456d23f8447711f783178ff4ea5af8f92828e2..63f416bb5a900210d6b3ab15bb4ffe1e16244b9a 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1261,7 +1261,7 @@ struct packed_git *find_sha1_pack(const unsigned char *sha1,
        
 }
 
        
 }
 

-int sha1_object_info(const unsigned char *sha1, char *type, unsigned long *sizep)
+static int sha1_loose_object_info(const unsigned char *sha1, char *type, unsigned long *sizep)

 {
        int status;
        unsigned long mapsize, size;
 {
        int status;
        unsigned long mapsize, size;


@@ -1270,20 +1270,8 @@ int sha1_object_info(const unsigned char *sha1, char *type, unsigned long *sizep
        char hdr[128];
 
        map = map_sha1_file(sha1, &mapsize);
        char hdr[128];
 
        map = map_sha1_file(sha1, &mapsize);

-       if (!map) {
-               struct pack_entry e;
-
-               if (!find_pack_entry(sha1, &e, NULL)) {
-                       reprepare_packed_git();
-                       if (!find_pack_entry(sha1, &e, NULL))
-                               return error("unable to find %s", sha1_to_hex(sha1));
-               }
-               if (use_packed_git(e.p))
-                       die("cannot map packed file");
-               status = packed_object_info(e.p, e.offset, type, sizep);
-               unuse_packed_git(e.p);
-               return status;
-       }
+       if (!map)
+               return error("unable to find %s", sha1_to_hex(sha1));

        if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
                status = error("unable to unpack %s header",
                               sha1_to_hex(sha1));
        if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
                status = error("unable to unpack %s header",
                               sha1_to_hex(sha1));


@@ -1299,6 +1287,23 @@ int sha1_object_info(const unsigned char *sha1, char *type, unsigned long *sizep
        return status;
 }
 
        return status;
 }
 

+int sha1_object_info(const unsigned char *sha1, char *type, unsigned long *sizep)
+{
+       int status;
+       struct pack_entry e;
+
+       if (!find_pack_entry(sha1, &e, NULL)) {
+               reprepare_packed_git();
+               if (!find_pack_entry(sha1, &e, NULL))
+                       return sha1_loose_object_info(sha1, type, sizep);
+       }
+       if (use_packed_git(e.p))
+               die("cannot map packed file");
+       status = packed_object_info(e.p, e.offset, type, sizep);
+       unuse_packed_git(e.p);
+       return status;
+}
+

 static void *read_packed_sha1(const unsigned char *sha1, char *type, unsigned long *size)
 {
        struct pack_entry e;
 static void *read_packed_sha1(const unsigned char *sha1, char *type, unsigned long *size)
 {
        struct pack_entry e;