path: root/object.c
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authorJunio C Hamano <>2011-11-18 00:26:54 (GMT)
committerJunio C Hamano <>2011-11-30 22:27:59 (GMT)
commit6c526148644475acbc047faaeb57d42fde1f667d (patch)
tree1bf8400d2f5dff6ea15775b8b8af47af2e740617 /object.c
parent0e990530ae6d6c6805d31c666953541f762dd402 (diff)
csum-file: introduce sha1file_checkpoint
It is useful to be able to rewind a check-summed file to a certain previous state after writing data into it using sha1write() API. The fast-import command does this after streaming a blob data to the packfile being generated and then noticing that the same blob has already been written, and it does this with a private code truncate_pack() that is commented as "Yes, this is a layering violation". Introduce two API functions, sha1file_checkpoint(), that allows the caller to save a state of a sha1file, and then later revert it to the saved state. Use it to reimplement truncate_pack(). Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'object.c')
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