X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=sha1_file.c;fp=sha1_file.c;h=f4b10894c8be74d3ab3be8ec6d81f35634399010;hb=3f9ac8d259fb919e001671c5e403e5fceaabf0d8;hp=c08da35d8a2c9f9fb02370769e87578ec1f2fcce;hpb=26125f6b9be8dac31f56bf3da60dfa0df6dc0b59;p=git.git

diff --git a/sha1_file.c b/sha1_file.c
index c08da35d..f4b10894 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -841,6 +841,25 @@ static unsigned long unpack_object_header(struct packed_git *p, unsigned long of
 	return offset;
 }
 
+int check_reuse_pack_delta(struct packed_git *p, unsigned long offset,
+			   unsigned char *base, unsigned long *sizep,
+			   enum object_type *kindp)
+{
+	unsigned long ptr;
+	int status = -1;
+
+	use_packed_git(p);
+	ptr = offset;
+	ptr = unpack_object_header(p, ptr, kindp, sizep);
+	if (*kindp != OBJ_DELTA)
+		goto done;
+	memcpy(base, p->pack_base + ptr, 20);
+	status = 0;
+ done:
+	unuse_packed_git(p);
+	return status;
+}
+
 void packed_object_info_detail(struct pack_entry *e,
 			       char *type,
 			       unsigned long *size,