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Fixed a bug in 7z2lzma.bash to make it work with .7z files

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that use something else than 2^n as the dictionary size.
Thanks to Dan Shechter for the bug report.
This commit is contained in:
Lasse Collin 2009-01-15 14:27:32 +02:00
parent 8286a60b8f
commit dc8f3be06d
1 changed files with 24 additions and 23 deletions
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47
extra/7z2lzma/7z2lzma.bash
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@ -11,30 +11,14 @@
#
# This script requires basic GNU tools and 7z or 7za tool from p7zip.
#
# Last modified: 2008-09-27 11:05+0300
# Last modified: 2009-01-15 14:25+0200
#
#############################################################################
#
# Copyright (C) 2008 Lasse Collin <lasse.collin@tukaani.org>
# Author: Lasse Collin <lasse.collin@tukaani.org>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
#############################################################################
@ -81,7 +65,7 @@ fi
# Get copmressed, uncompressed, and dictionary size.
CSIZE=$(printf '%s\n' "$INFO" | sed -rn 's|^Packed Size = ([0-9]+$)|\1|p')
USIZE=$(printf '%s\n' "$INFO" | sed -rn 's|^Size = ([0-9]+$)|\1|p')
DICT=$(printf '%s\n' "$INFO" | sed -rn 's|^Method = LZMA:([0-9]+)$|\1|p')
DICT=$(printf '%s\n' "$INFO" | sed -rn 's|^Method = LZMA:([0-9]+[bkm]?)$|\1|p')
if [ -z "$CSIZE" -o -z "$USIZE" -o -z "$DICT" ]; then
echo "Parsing output of $SEVENZIP failed. Maybe the file uses some"
@ -93,8 +77,25 @@ fi
# Otherwise the output will be corrupt.
printf '\x5D' > "$2"
# Dictionary size
int2bin 4 "$((1 << DICT))" >> "$2"
# Dictionary size can be either was power of two, bytes, kibibytes, or
# mebibytes. We need to convert it to bytes.
case $DICT in
*b)
DICT=${DICT%b}
;;
*k)
DICT=${DICT%k}
DICT=$((DICT << 10))
;;
*m)
DICT=${DICT%m}
DICT=$((DICT << 20))
;;
*)
DICT=$((1 << DICT))
;;
esac
int2bin 4 "$DICT" >> "$2"
# Uncompressed size
int2bin 8 "$USIZE" >> "$2"