1#!@POSIX_SHELL@ 2 3# xzgrep -- a wrapper around a grep program that decompresses files as needed 4# Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca> 5 6# Copyright (C) 1998, 2001, 2002, 2006, 2007 Free Software Foundation 7# Copyright (C) 1993 Jean-loup Gailly 8 9# Modified for XZ Utils by Andrew Dudman and Lasse Collin. 10 11# This program is free software; you can redistribute it and/or modify 12# it under the terms of the GNU General Public License as published by 13# the Free Software Foundation; either version 2 of the License, or 14# (at your option) any later version. 15 16# This program is distributed in the hope that it will be useful, 17# but WITHOUT ANY WARRANTY; without even the implied warranty of 18# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19# GNU General Public License for more details. 20 21#SET_PATH - This line is a placeholder to ease patching this script. 22 23# Instead of unsetting XZ_OPT, just make sure that xz will use file format 24# autodetection. This way memory usage limit and thread limit can be 25# specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the 26# environment variables. 27xz='@xz@ --format=auto' 28unset GZIP BZIP BZIP2 LZOP 29 30case ${0##*/} in 31 *egrep*) prog=xzegrep; grep=${GREP:-egrep};; 32 *fgrep*) prog=xzfgrep; grep=${GREP:-fgrep};; 33 *) prog=xzgrep; grep=${GREP:-grep};; 34esac 35 36version="$prog (@PACKAGE_NAME@) @VERSION@" 37 38usage="Usage: ${0##*/} [OPTION]... [-e] PATTERN [FILE]... 39Look for instances of PATTERN in the input FILEs, using their 40uncompressed contents if they are compressed. 41 42OPTIONs are the same as for '$grep'. 43 44Report bugs to <@PACKAGE_BUGREPORT@>." 45 46# sed script to escape all ' for the shell, and then (to handle trailing 47# newlines correctly) turn trailing X on last line into '. 48escape=' 49 s/'\''/'\''\\'\'''\''/g 50 $s/X$/'\''/ 51' 52operands= 53have_pat=0 54files_with_matches=0 55files_without_matches=0 56no_filename=0 57with_filename=0 58 59while test $# -ne 0; do 60 option=$1 61 shift 62 optarg= 63 64 case $option in 65 (-[0123456789abcdhHiIKLlnoqrRsTuUvVwxyzZ]?*) 66 arg2=-\'$(expr "X${option}X" : 'X-.[0-9]*\(.*\)' | sed "$escape") 67 eval "set -- $arg2 "'${1+"$@"}' 68 option=$(expr "X$option" : 'X\(-.[0-9]*\)');; 69 (--binary-*=* | --[lm]a*=* | --reg*=*) 70 ;; 71 (-[ABCDefm] | --binary-* | --file | --[lm]a* | --reg*) 72 case ${1?"$option option requires an argument"} in 73 (*\'*) 74 optarg=" '"$(printf '%sX\n' "$1" | sed "$escape");; 75 (*) 76 optarg=" '$1'";; 77 esac 78 shift;; 79 (--) 80 break;; 81 (-?*) 82 ;; 83 (*) 84 case $option in 85 (*\'*) 86 operands="$operands '"$(printf '%sX\n' "$option" | sed "$escape");; 87 (*) 88 operands="$operands '$option'";; 89 esac 90 ${POSIXLY_CORRECT+break} 91 continue;; 92 esac 93 94 case $option in 95 (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*) 96 printf >&2 '%s: %s: Option not supported\n' "$0" "$option" 97 exit 2;; 98 (-[ef]* | --file | --file=* | --reg*) 99 have_pat=1;; 100 (--h | --he | --hel | --help) 101 echo "$usage" || exit 2 102 exit;; 103 (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \ 104 | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \ 105 | --with-filename) 106 with_filename=1 107 continue;; 108 (-l | --files-with-*) 109 files_with_matches=1 110 continue;; 111 (-L | --files-witho*) 112 files_without_matches=1 113 continue;; 114 (-h | --no-f*) 115 no_filename=1;; 116 (-V | --v | --ve | --ver | --vers | --versi | --versio | --version) 117 echo "$version" || exit 2 118 exit;; 119 esac 120 121 case $option in 122 (*\'?*) 123 option=\'$(expr "X${option}X" : 'X\(.*\)' | sed "$escape");; 124 (*) 125 option="'$option'";; 126 esac 127 128 grep="$grep $option$optarg" 129done 130 131if test $files_with_matches -eq 1 || test $files_without_matches -eq 1; then 132 grep="$grep -q" 133fi 134 135eval "set -- $operands "'${1+"$@"}' 136 137if test $have_pat -eq 0; then 138 case ${1?"Missing pattern; try \`${0##*/} --help' for help"} in 139 (*\'*) 140 grep="$grep -- '"$(printf '%sX\n' "$1" | sed "$escape");; 141 (*) 142 grep="$grep -- '$1'";; 143 esac 144 shift 145fi 146 147if test $# -eq 0; then 148 set -- - 149fi 150 151exec 3>&1 152 153# res=1 means that no file matched yet 154res=1 155 156for i; do 157 case $i in 158 *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdfq";; 159 *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdfq";; 160 *[-.]lzo | *[-.]tzo) uncompress="lzop -cdfq";; 161 *) uncompress="$xz -cdfq";; 162 esac 163 # Fail if xz or grep (or sed) fails. 164 xz_status=$( 165 exec 5>&1 166 ($uncompress -- "$i" 5>&-; echo $? >&5) 3>&- | 167 if test $files_with_matches -eq 1; then 168 eval "$grep" && { printf '%s\n' "$i" || exit 2; } 169 elif test $files_without_matches -eq 1; then 170 eval "$grep" || { 171 r=$? 172 if test $r -eq 1; then 173 printf '%s\n' "$i" || r=2 174 fi 175 exit $r 176 } 177 elif test $with_filename -eq 0 && 178 { test $# -eq 1 || test $no_filename -eq 1; }; then 179 eval "$grep" 180 else 181 case $i in 182 (*' 183'* | *'&'* | *'\'* | *'|'*) 184 i=$(printf '%s\n' "$i" | 185 sed ' 186 $!N 187 $s/[&\|]/\\&/g 188 $s/\n/\\n/g 189 ');; 190 esac 191 sed_script="s|^|$i:|" 192 193 # Fail if grep or sed fails. 194 r=$( 195 exec 4>&1 196 (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&- 197 ) || r=2 198 exit $r 199 fi >&3 5>&- 200 ) 201 r=$? 202 203 # fail occured previously, nothing worse can happen 204 test $res -gt 1 && continue 205 206 test "$xz_status" -eq 0 || test "$xz_status" -eq 2 \ 207 || test "$(kill -l "$xz_status" 2> /dev/null)" = "PIPE" || r=2 208 209 # still no match 210 test $r -eq 1 && continue 211 212 # 0 == match, >=2 == fail 213 res=$r 214done 215exit $res 216