diff options
Diffstat (limited to 'packfile.c')
-rw-r--r-- | packfile.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/packfile.c b/packfile.c index 56ec50feb..111694204 100644 --- a/packfile.c +++ b/packfile.c @@ -884,3 +884,28 @@ void reprepare_packed_git(void) prepare_packed_git_run_once = 0; prepare_packed_git(); } + +unsigned long unpack_object_header_buffer(const unsigned char *buf, + unsigned long len, enum object_type *type, unsigned long *sizep) +{ + unsigned shift; + unsigned long size, c; + unsigned long used = 0; + + c = buf[used++]; + *type = (c >> 4) & 7; + size = c & 15; + shift = 4; + while (c & 0x80) { + if (len <= used || bitsizeof(long) <= shift) { + error("bad object header"); + size = used = 0; + break; + } + c = buf[used++]; + size += (c & 0x7f) << shift; + shift += 7; + } + *sizep = size; + return used; +} |