mirror of
https://github.com/zdharma-continuum/zinit.git
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515688bc97
This reverts commitb979847bd4, reversing changes made toda924a21a1. I (@vladdoster) accidentally merged this into the wrong repository. Apologies for the lack of due diligence.
64 lines
1.7 KiB
Bash
Executable file
64 lines
1.7 KiB
Bash
Executable file
#!/usr/bin/env zsh
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#
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# -*- mode: sh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
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#
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# Copyright (c) 2016-2020 Sebastian Gniazdowski and contributors
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# Copyright (c) 2021-2022 zdharma-continuum and contributors
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emulate -R zsh -o extendedglob
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local pkg=$1
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if [[ -z $pkg || ! -e $pkg ]]; then
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print -u2 -Pr "%F{160}rpm2cpio.sh%f: no package supplied"
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exit 1
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fi
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local leadsize=96
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local o=$(( $leadsize + 8 ))
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set -- ${(s: :)$(od -j $o -N 8 -t u1 $pkg)}
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local i=$(( 256 * ( 256 * ( 256 * $2 + $3 ) + $4 ) + $5 ))
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local d=$(( 256 * ( 256 * ( 256 * $6 + $7 ) + $8 ) + $9 ))
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sigsize=$(( 8 + 16 * $i + $d ))
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o=$(( $o + $sigsize + ( 8 - ( $sigsize % 8 ) ) % 8 + 8 ))
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set -- ${(s: :)$(od -j $o -N 8 -t u1 $pkg)}
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i=$(( 256 * ( 256 * ( 256 * $2 + $3 ) + $4 ) + $5 ))
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d=$(( 256 * ( 256 * ( 256 * $6 + $7 ) + $8 ) + $9 ))
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local hdrsize=$(( 8 + 16 * $i + $d ))
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o=$(( $o + $hdrsize ))
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local -a UNPACKCMD
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UNPACKCMD=( dd if=$pkg ibs=$o skip=1 )
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local COMPRESSION="$($=UNPACKCMD | file -)"
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local -a DECOMPRESSCMD
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if [[ $COMPRESSION == (#i)*gzip* ]]; then
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DECOMPRESSCMD=( gunzip )
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elif [[ $COMPRESSION == (#i)*bzip2* ]]; then
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DECOMPRESSCMD=( bunzip2 )
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elif [[ $COMPRESSION == (#i)*xz* ]]; then
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DECOMPRESSCMD=( unxz )
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elif [[ $COMPRESSION == (#i)*cpio* ]]; then
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DECOMPRESSCMD=( cat )
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else
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DECOMPRESSCMD=( $(which unlzma 2>/dev/null) )
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if [[ $DECOMPRESSCMD != /* ]]; then
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DECOMPRESSCMD=( $(which lzmash 2>/dev/null) )
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if [[ $DECOMPRESSCMD == /* ]]; then
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DECOMPRESSCMD=( lzmash -d -c )
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else
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DECOMPRESSCMD=( cat )
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fi
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fi
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fi
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command "$UNPACKCMD[@]" 2>/dev/null | command "$DECOMPRESSCMD[@]"
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# Local Variables:
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# mode: Shell-Script
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# sh-indentation: 2
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# indent-tabs-mode: nil
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# sh-basic-offset: 2
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# End:
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# vim: ft=zsh sw=2 ts=2 et
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