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>
6 # Copyright (C) 1998, 2001, 2002, 2006, 2007 Free Software Foundation
7 # Copyright (C) 1993 Jean-loup Gailly
9 # Modified for XZ Utils by Andrew Dudman and Lasse Collin.
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.
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.
21 #SET_PATH - This line is a placeholder to ease patching this script.
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.
27 xz='@xz@ --format=auto'
28 unset GZIP BZIP BZIP2 LZOP
31 *egrep*) prog=xzegrep; grep=${GREP:-egrep};;
32 *fgrep*) prog=xzfgrep; grep=${GREP:-fgrep};;
33 *) prog=xzgrep; grep=${GREP:-grep};;
36 version="$prog (@PACKAGE_NAME@) @VERSION@"
38 usage="Usage: ${0##*/} [OPTION]... [-e] PATTERN [FILE]...
39 Look for instances of PATTERN in the input FILEs, using their
40 uncompressed contents if they are compressed.
42 OPTIONs are the same as for '$grep'.
44 Report bugs to <@PACKAGE_BUGREPORT@>."
46 # sed script to escape all ' for the shell, and then (to handle trailing
47 # newlines correctly) turn trailing X on last line into '.
49 s/'\''/'\''\\'\'''\''/g
55 files_without_matches=0
59 while test $# -ne 0; do
65 (-[0123456789abcdhHiIKLlnoqrRsTuUvVwxyzZ]?*)
66 arg2=-\'$(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*=*)
71 (-[ABCDefm] | --binary-* | --file | --[lm]a* | --reg*)
72 case ${1?"$option option requires an argument"} in
74 optarg=" '"$(printf '%sX\n' "$1" | sed "$escape");;
86 operands="$operands '"$(printf '%sX\n' "$option" | sed "$escape");;
88 operands="$operands '$option'";;
90 ${POSIXLY_CORRECT+break}
95 (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*)
96 printf >&2 '%s: %s: Option not supported\n' "$0" "$option"
98 (-[ef]* | --file | --file=* | --reg*)
100 (--h | --he | --hel | --help)
101 echo "$usage" || exit 2
103 (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \
104 | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \
108 (-l | --files-with-*)
111 (-L | --files-witho*)
112 files_without_matches=1
116 (-V | --v | --ve | --ver | --vers | --versi | --versio | --version)
117 echo "$version" || exit 2
123 option=\'$(expr "X${option}X" : 'X\(.*\)' | sed "$escape");;
128 grep="$grep $option$optarg"
131 if test $files_with_matches -eq 1 || test $files_without_matches -eq 1; then
135 eval "set -- $operands "'${1+"$@"}'
137 if test $have_pat -eq 0; then
138 case ${1?"Missing pattern; try \`${0##*/} --help' for help"} in
140 grep="$grep -- '"$(printf '%sX\n' "$1" | sed "$escape");;
142 grep="$grep -- '$1'";;
147 if test $# -eq 0; then
153 # res=1 means that no file matched yet
158 *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdfq";;
159 *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdfq";;
160 *[-.]lzo | *[-.]tzo) uncompress="lzop -cdfq";;
161 *) uncompress="$xz -cdfq";;
163 # Fail if xz or grep (or sed) fails.
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
172 if test $r -eq 1; then
173 printf '%s\n' "$i" || r=2
177 elif test $with_filename -eq 0 &&
178 { test $# -eq 1 || test $no_filename -eq 1; }; then
183 '* | *'&'* | *'\'* | *'|'*)
184 i=$(printf '%s\n' "$i" |
191 sed_script="s|^|$i:|"
193 # Fail if grep or sed fails.
196 (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&-
203 # fail occured previously, nothing worse can happen
204 test $res -gt 1 && continue
206 test "$xz_status" -eq 0 || test "$xz_status" -eq 2 \
207 || test "$(kill -l "$xz_status" 2> /dev/null)" = "PIPE" || r=2
210 test $r -eq 1 && continue
212 # 0 == match, >=2 == fail