# $File: apt,v 1.1 2016/10/17 19:51:57 christos Exp $

#------------------------------------------------------------------------------
# $File: apt,v 1.1 2016/10/17 19:51:57 christos Exp $
# apt: file(1) magic for APT Cache files
# <http://www.fifi.org/doc/libapt-pkg-doc/cache.html/ch2.html>
# <https://anonscm.debian.org/cgit/apt/apt.git/tree/apt-pkg/pkgcache.h#n292>

# before version 10 ("old format"), data was in arch-specific long/short

# old format 64 bit
0 name apt-cache-64bit-be
>12 beshort 1 \b, dirty
>40 bequad x \b, %llu packages
>48 bequad x \b, %llu versions

# old format 32 bit
0 name apt-cache-32bit-be
>8 beshort 1 \b, dirty
>40 belong x \b, %u packages
>44 belong x \b, %u versions

# new format
0 name apt-cache-be
>6 byte 1 \b, dirty
>24 belong x \b, %u packages
>28 belong x \b, %u versions

0 bequad 0x98FE76DC
>8 ubeshort <10 APT cache data, version %u
>>10 beshort x \b.%u, 64 bit big-endian
>>0 use apt-cache-64bit-be

0 lequad 0x98FE76DC
>8 uleshort <10 APT cache data, version %u
>>10 leshort x \b.%u, 64 bit little-endian
>>0 use \^apt-cache-64bit-be

0 belong 0x98FE76DC
>4 ubeshort <10 APT cache data, version %u
>>6 ubeshort x \b.%u, 32 bit big-endian
>>0 use apt-cache-32bit-be
>4 ubyte >9 APT cache data, version %u
>>5 ubyte x \b.%u, big-endian
>>0 use apt-cache-be

0 lelong 0x98FE76DC
>4 uleshort <10 APT cache data, version %u
>>6 uleshort x \b.%u, 32 bit little-endian
>>0 use \^apt-cache-32bit-be
>4 ubyte >9 APT cache data, version %u
>>5 ubyte x \b.%u, little-endian
>>0 use \^apt-cache-be