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@enable_path_for_scripts@ 22#SET_PATH - This line is a placeholder to ease patching this script. 23 24# Instead of unsetting XZ_OPT, just make sure that xz will use file format 25# autodetection. This way memory usage limit and thread limit can be 26# specified via XZ_OPT. With gzip, bzip2, and lzop it's OK to just unset the 27# environment variables. 28xz='@xz@ --format=auto' 29unset GZIP BZIP BZIP2 LZOP 30 31case ${0##*/} in 32 *egrep*) prog=xzegrep; grep=${GREP:-egrep};; 33 *fgrep*) prog=xzfgrep; grep=${GREP:-fgrep};; 34 *) prog=xzgrep; grep=${GREP:-grep};; 35esac 36 37version="$prog (@PACKAGE_NAME@) @VERSION@" 38 39usage="Usage: ${0##*/} [OPTION]... [-e] PATTERN [FILE]... 40Look for instances of PATTERN in the input FILEs, using their 41uncompressed contents if they are compressed. 42 43OPTIONs are the same as for '$grep'. 44 45Report bugs to <@PACKAGE_BUGREPORT@>." 46 47# sed script to escape all ' for the shell, and then (to handle trailing 48# newlines correctly) turn trailing X on last line into '. 49escape=' 50 s/'\''/'\''\\'\'''\''/g 51 $s/X$/'\''/ 52' 53operands= 54have_pat=0 55files_with_matches=0 56files_without_matches=0 57no_filename=0 58with_filename=0 59 60while test $# -ne 0; do 61 option=$1 62 shift 63 optarg= 64 65 case $option in 66 (-[0123456789abcdhHiIKLlnoqrRsTuUvVwxyzZ]?*) 67 arg2=-\'$(expr "X${option}X" : 'X-.[0-9]*\(.*\)' | sed "$escape") 68 eval "set -- $arg2 "'${1+"$@"}' 69 option=$(expr "X$option" : 'X\(-.[0-9]*\)');; 70 (--binary-*=* | --[lm]a*=* | --reg*=*) 71 ;; 72 (-[ABCDefm] | --binary-* | --file | --[lm]a* | --reg*) 73 case ${1?"$option option requires an argument"} in 74 (*\'*) 75 optarg=" '"$(printf '%sX\n' "$1" | sed "$escape");; 76 (*) 77 optarg=" '$1'";; 78 esac 79 shift;; 80 (--) 81 break;; 82 (-?*) 83 ;; 84 (*) 85 case $option in 86 (*\'*) 87 operands="$operands '"$(printf '%sX\n' "$option" | sed "$escape");; 88 (*) 89 operands="$operands '$option'";; 90 esac 91 ${POSIXLY_CORRECT+break} 92 continue;; 93 esac 94 95 case $option in 96 (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*) 97 printf >&2 '%s: %s: Option not supported\n' "$0" "$option" 98 exit 2;; 99 (-[ef]* | --file | --file=* | --reg*) 100 have_pat=1;; 101 (--h | --he | --hel | --help) 102 echo "$usage" || exit 2 103 exit;; 104 (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \ 105 | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \ 106 | --with-filename) 107 with_filename=1 108 continue;; 109 (-l | --files-with-*) 110 files_with_matches=1 111 continue;; 112 (-L | --files-witho*) 113 files_without_matches=1 114 continue;; 115 (-h | --no-f*) 116 no_filename=1;; 117 (-V | --v | --ve | --ver | --vers | --versi | --versio | --version) 118 echo "$version" || exit 2 119 exit;; 120 esac 121 122 case $option in 123 (*\'?*) 124 option=\'$(expr "X${option}X" : 'X\(.*\)' | sed "$escape");; 125 (*) 126 option="'$option'";; 127 esac 128 129 grep="$grep $option$optarg" 130done 131 132if test $files_with_matches -eq 1 || test $files_without_matches -eq 1; then 133 grep="$grep -q" 134fi 135 136eval "set -- $operands "'${1+"$@"}' 137 138if test $have_pat -eq 0; then 139 case ${1?"Missing pattern; try \`${0##*/} --help' for help"} in 140 (*\'*) 141 grep="$grep -- '"$(printf '%sX\n' "$1" | sed "$escape");; 142 (*) 143 grep="$grep -- '$1'";; 144 esac 145 shift 146fi 147 148if test $# -eq 0; then 149 set -- - 150fi 151 152exec 3>&1 153 154# res=1 means that no file matched yet 155res=1 156 157for i; do 158 case $i in 159 *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdfq";; 160 *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdfq";; 161 *[-.]lzo | *[-.]tzo) uncompress="lzop -cdfq";; 162 *) uncompress="$xz -cdfq";; 163 esac 164 # Fail if xz or grep (or sed) fails. 165 xz_status=$( 166 exec 5>&1 167 ($uncompress -- "$i" 5>&-; echo $? >&5) 3>&- | 168 if test $files_with_matches -eq 1; then 169 eval "$grep" && { printf '%s\n' "$i" || exit 2; } 170 elif test $files_without_matches -eq 1; then 171 eval "$grep" || { 172 r=$? 173 if test $r -eq 1; then 174 printf '%s\n' "$i" || r=2 175 fi 176 exit $r 177 } 178 elif test $with_filename -eq 0 && 179 { test $# -eq 1 || test $no_filename -eq 1; }; then 180 eval "$grep" 181 else 182 case $i in 183 (*' 184'* | *'&'* | *'\'* | *'|'*) 185 i=$(printf '%s\n' "$i" | 186 sed ' 187 $!N 188 $s/[&\|]/\\&/g 189 $s/\n/\\n/g 190 ');; 191 esac 192 sed_script="s|^|$i:|" 193 194 # Fail if grep or sed fails. 195 r=$( 196 exec 4>&1 197 (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&- 198 ) || r=2 199 exit $r 200 fi >&3 5>&- 201 ) 202 r=$? 203 204 # fail occurred previously, nothing worse can happen 205 test $res -gt 1 && continue 206 207 test "$xz_status" -eq 0 || test "$xz_status" -eq 2 \ 208 || test "$(kill -l "$xz_status" 2> /dev/null)" = "PIPE" || r=2 209 210 # still no match 211 test $r -eq 1 && continue 212 213 # 0 == match, >=2 == fail 214 res=$r 215done 216exit $res 217