pack-objects: small cleanup
Better encapsulate delta creation for writing.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index 777f272..8691c99 100644
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -102,21 +102,24 @@
static uint32_t reused, reused_delta;
-static void *delta_against(void *buf, unsigned long size, struct object_entry *entry)
+static void *get_delta(struct object_entry *entry)
{
- unsigned long othersize, delta_size;
+ unsigned long size, base_size, delta_size;
+ void *buf, *base_buf, *delta_buf;
enum object_type type;
- void *otherbuf = read_sha1_file(entry->delta->idx.sha1, &type, &othersize);
- void *delta_buf;
- if (!otherbuf)
+ buf = read_sha1_file(entry->idx.sha1, &type, &size);
+ if (!buf)
+ die("unable to read %s", sha1_to_hex(entry->idx.sha1));
+ base_buf = read_sha1_file(entry->delta->idx.sha1, &type, &base_size);
+ if (!base_buf)
die("unable to read %s", sha1_to_hex(entry->delta->idx.sha1));
- delta_buf = diff_delta(otherbuf, othersize,
+ delta_buf = diff_delta(base_buf, base_size,
buf, size, &delta_size, 0);
- if (!delta_buf || delta_size != entry->delta_size)
+ if (!delta_buf || delta_size != entry->delta_size)
die("delta size changed");
- free(buf);
- free(otherbuf);
+ free(buf);
+ free(base_buf);
return delta_buf;
}
@@ -223,7 +226,6 @@
off_t write_offset)
{
unsigned long size;
- enum object_type type;
void *buf;
unsigned char header[10];
unsigned char dheader[10];
@@ -281,10 +283,7 @@
obj_type = (allow_ofs_delta && entry->delta->idx.offset) ?
OBJ_OFS_DELTA : OBJ_REF_DELTA;
} else {
- buf = read_sha1_file(entry->idx.sha1, &type, &size);
- if (!buf)
- die("unable to read %s", sha1_to_hex(entry->idx.sha1));
- buf = delta_against(buf, size, entry);
+ buf = get_delta(entry);
size = entry->delta_size;
obj_type = (allow_ofs_delta && entry->delta->idx.offset) ?
OBJ_OFS_DELTA : OBJ_REF_DELTA;
