wok annotate xz/stuff/lzma @ rev 4863

xz: add wrapper...
author Pascal Bellard <pascal.bellard@slitaz.org>
date Wed Feb 03 22:37:34 2010 +0100 (2010-02-03)
parents
children f37d43db2e83
rev   line source
pascal@4863 1 #!/bin/sh
pascal@4863 2 #
pascal@4863 3 # Wrapper to accept lzma_alone or lzma_utils arguments
pascal@4863 4 #
pascal@4863 5
pascal@4863 6 usage()
pascal@4863 7 {
pascal@4863 8 cat 1>&2 <<EOT
pascal@4863 9 Usage: LZMA <e|d> inputFile outputFile [<switches>...]
pascal@4863 10 e: encode file
pascal@4863 11 d: decode file
pascal@4863 12 <Switches>
pascal@4863 13 -a{N}: set compression mode - [0, 2], default: 1 (max)
pascal@4863 14 -d{N}: set dictionary - [12,30], default: 23 (8MB)
pascal@4863 15 -fb{N}: set number of fast bytes - [2, 273], default: 64
pascal@4863 16 -mc{N}: set number of cycles for match finder
pascal@4863 17 -lc{N}: set number of literal context bits - [0, 3], default: 3
pascal@4863 18 -lp{N}: set number of literal pos bits - [0, 4], default: 0
pascal@4863 19 -pb{N}: set number of pos bits - [0, 4], default: 2
pascal@4863 20 -mf{MF_ID}: set Match Finder: [bt2, bt3, bt4, hc3, hc4], default: bt4
pascal@4863 21 -eos: write End Of Stream marker
pascal@4863 22 -si: read data from stdin
pascal@4863 23 -so: write data to stdout
pascal@4863 24 EOT
pascal@4863 25 exit 1
pascal@4863 26 }
pascal@4863 27
pascal@4863 28 # Get lzma_alone arg
pascal@4863 29 getarg()
pascal@4863 30 {
pascal@4863 31 case "$1" in
pascal@4863 32 -a0) mode="lzma1=mode=fast";;
pascal@4863 33 -a1) mode="lzma1=mode=normal";;
pascal@4863 34 -a2) mode="lzma2=mode=normal";;
pascal@4863 35 -d*) extra="$extra,dict=$((2 ** ${1#-d}))";;
pascal@4863 36 -fb*) extra="$extra,fb=${1#-fb}";;
pascal@4863 37 -mc*) extra="$extra,depth=${1#-mc}";;
pascal@4863 38 -lc*) extra="$extra,lc=${1#-lc}";;
pascal@4863 39 -lp*) extra="$extra,lp=${1#-lp}";;
pascal@4863 40 -pb*) extra="$extra,pb=${1#-pb}";;
pascal@4863 41 -mf*) extra="$extra,mf=${1#-mf}";;
pascal@4863 42 -eos|-mt*) ;;
pascal@4863 43 -si) output="> ${input#< }"; input="";;
pascal@4863 44 -so) output="";;
pascal@4863 45 *) return 1;;
pascal@4863 46 esac
pascal@4863 47 return 0
pascal@4863 48 }
pascal@4863 49
pascal@4863 50 lzma_utils()
pascal@4863 51 {
pascal@4863 52 args="--format=lzma"
pascal@4863 53 files=""
pascal@4863 54 suffix=lzma
pascal@4863 55 while [ -n "$1" ]; do
pascal@4863 56 case "$1" in
pascal@4863 57 -e) args="$args -z";;
pascal@4863 58 -d|-k|-[0-9]) args="$args $1";;
pascal@4863 59 --fast) args="$args -1";;
pascal@4863 60 --best) args="$args -9";;
pascal@4863 61 -c|--stdout|--to-stdout) args="$args -c";;
pascal@4863 62 -S) suffix=${2#.}; shift;;
pascal@4863 63 -*);;
pascal@4863 64 *) files="$files $1";;
pascal@4863 65 esac
pascal@4863 66 shift
pascal@4863 67 done
pascal@4863 68 for i in $files; do
pascal@4863 69 xz $args $i || break
pascal@4863 70 [ "lzma" == "$suffix" ] || mv ${i%.*}.lzma ${i%.*}.$suffix
pascal@4863 71 done
pascal@4863 72 exit
pascal@4863 73 }
pascal@4863 74
pascal@4863 75 # lzma_utils or lzma_alone ?
pascal@4863 76 [ -n "$3" ] || lzma_utils $@
pascal@4863 77 case "$1" in
pascal@4863 78 d) args="-d";;
pascal@4863 79 e) args="-z";;
pascal@4863 80 --help|-h|-\?|'') usage;;
pascal@4863 81 *) lzma_utils $@;;
pascal@4863 82 esac
pascal@4863 83
pascal@4863 84 # it's lzma_alone
pascal@4863 85 # get filenames
pascal@4863 86 input="< $2"
pascal@4863 87 output="> $2"
pascal@4863 88 shift
pascal@4863 89 if ! getarg "$1"; then
pascal@4863 90 output="> $2"
pascal@4863 91 getarg "$2"
pascal@4863 92 shift
pascal@4863 93 fi
pascal@4863 94
pascal@4863 95 # get arguments
pascal@4863 96 extra=""
pascal@4863 97 mode="lzma1=mode=normal"
pascal@4863 98 while [ -n "$2" ]; do
pascal@4863 99 getarg "$2" || usage
pascal@4863 100 shift
pascal@4863 101 done
pascal@4863 102
pascal@4863 103 # fake lzma_alone (-eos -mt1)
pascal@4863 104 eval exec xz $args --format=lzma --$mode$extra --stdout $input $output