streaming_write_entry(): support files with holes

diff --git a/sha1_file.c b/sha1_file.c
index 7eed3166717f9ec1606cc683b916027474e83007..a28683aaf0b3be2308caf89674a59d4d6ad9ac31 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1523,10 +1523,10 @@ static int packed_delta_info(struct packed_git *p,
        return type;
 }
 
-static int unpack_object_header(struct packed_git *p,
-                               struct pack_window **w_curs,
-                               off_t *curpos,
-                               unsigned long *sizep)
+int unpack_object_header(struct packed_git *p,
+                        struct pack_window **w_curs,
+                        off_t *curpos,
+                        unsigned long *sizep)
 {
        unsigned char *base;
        unsigned int left;
@@ -1697,6 +1697,13 @@ static unsigned long pack_entry_hash(struct packed_git *p, off_t base_offset)
        return hash % MAX_DELTA_CACHE;
 }
 
+static int in_delta_base_cache(struct packed_git *p, off_t base_offset)
+{
+       unsigned long hash = pack_entry_hash(p, base_offset);
+       struct delta_base_cache_entry *ent = delta_base_cache + hash;
+       return (ent->data && ent->p == p && ent->base_offset == base_offset);
+}
+
 static void *cache_or_unpack_entry(struct packed_git *p, off_t base_offset,
        unsigned long *base_size, enum object_type *type, int keep_cache)
 {
@@ -2128,6 +2135,8 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi)
        if (status < 0) {
                mark_bad_packed_object(e.p, sha1);
                status = sha1_object_info_extended(sha1, oi);
+       } else if (in_delta_base_cache(e.p, e.offset)) {
+               oi->whence = OI_DBCACHED;
        } else {
                oi->whence = OI_PACKED;
                oi->u.packed.offset = e.offset;