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write_pack_header(): a helper function

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Factor out a small logic out of the private write_pack_file() function
in builtin/pack-objects.c

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano
2011-10-28 11:40:48 -07:00
parent e8e1c29021
commit c0ad465725
3 changed files with 17 additions and 6 deletions
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12
pack-write.c
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@ -178,6 +178,18 @@ const char *write_idx_file(const char *index_name, struct pack_idx_entry **objec
return index_name;
}
off_t write_pack_header(struct sha1file *f, uint32_t nr_entries)
{
struct pack_header hdr;
hdr.hdr_signature = htonl(PACK_SIGNATURE);
hdr.hdr_version = htonl(PACK_VERSION);
hdr.hdr_entries = htonl(nr_entries);
if (sha1write(f, &hdr, sizeof(hdr)))
return 0;
return sizeof(hdr);
}
/*
* Update pack header with object_count and compute new SHA1 for pack data
* associated to pack_fd, and write that SHA1 at the end. That new SHA1