Make git pack files use little-endian size encoding

[git.git] / pack-objects.c

diff --git a/pack-objects.c b/pack-objects.c
index feee560..fc969e3 100644 (file)
--- a/pack-objects.c
+++ b/pack-objects.c
@@ -51,32 +51,19 @@ static void *delta_against(void *buf, unsigned long size, struct object_entry *e
  */
 static int encode_header(enum object_type type, unsigned long size, unsigned char *hdr)
 {
-       int n = 1, i;
+       int n = 1;
        unsigned char c;
 
        if (type < OBJ_COMMIT || type > OBJ_DELTA)
                die("bad type %d", type);
 
-       /*
-        * Shift the size up by 7 bits at a time,
-        * until you get bits in the "high four".
-        * That will be our beginning. We'll have
-        * four size bits in 28..31, then groups
-        * of seven in 21..27, 14..20, 7..13 and
-        * finally 0..6.
-        */
-       if (size) {
-               n = 5;
-               while (!(size & 0xfe000000)) {
-                       size <<= 7;
-                       n--;
-               }
-       }
-       c = (type << 4) | (size >> 28);
-       for (i = 1; i < n; i++) {
+       c = (type << 4) | (size & 15);
+       size >>= 4;
+       while (size) {
                *hdr++ = c | 0x80;
-               c = (size >> 21) & 0x7f;
-               size <<= 7;
+               c = size & 0x7f;
+               size >>= 7;
+               n++;
        }
        *hdr = c;
        return n;
@@ -148,7 +135,7 @@ static void write_pack_file(void)
        else
                f = sha1create("%s.%s", base_name, "pack");
        hdr.hdr_signature = htonl(PACK_SIGNATURE);
-       hdr.hdr_version = htonl(1);
+       hdr.hdr_version = htonl(PACK_VERSION);
        hdr.hdr_entries = htonl(nr_objects);
        sha1write(f, &hdr, sizeof(hdr));
        offset = sizeof(hdr);