diff options
Diffstat (limited to '')
| -rw-r--r-- | src/scripts/xzgrep.in | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/scripts/xzgrep.in b/src/scripts/xzgrep.in new file mode 100644 index 00000000..9a9b393f --- /dev/null +++ b/src/scripts/xzgrep.in @@ -0,0 +1,196 @@ +#!@POSIX_SHELL@ + +# xzgrep -- a wrapper around a grep program that decompresses files as needed +# Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca> + +# Copyright (C) 1998, 2001, 2002, 2006, 2007 Free Software Foundation +# Copyright (C) 1993 Jean-loup Gailly + +# Modified for XZ Utils by Andrew Dudman and Lasse Collin. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +#SET_PATH - This line is a placeholder to ease patching this script. + +# Instead of unsetting XZ_OPT, just make sure that xz will use file format +# autodetection. This way memory usage limit and thread limit can be +# specified via XZ_OPT. With gzip and bzip2 it's OK to just unset the +# environment variables. +xz='@xz@ --format=auto' +unset GZIP BZIP BZIP2 + +case ${0##/*} in + *egrep*) prog=xzegrep; grep=${GREP:-egrep};; + *fgrep*) prog=xzfgrep; grep=${GREP:-fgrep};; + *) prog=xzgrep; grep=${GREP:-grep};; +esac + +version="$prog (@PACKAGE_NAME@) @VERSION@" + +usage="Usage: ${0##/*} [OPTION]... [-e] PATTERN [FILE]... +Look for instances of PATTERN in the input FILEs, using their +uncompressed contents if they are compressed. + +OPTIONs are the same as for '$grep'. + +Report bugs to <@PACKAGE_BUGREPORT@>." + +# sed script to escape all ' for the shell, and then (to handle trailing +# newlines correctly) turn trailing X on last line into '. +escape=' + s/'\''/'\''\\'\'''\''/g + $s/X$/'\''/ +' +operands= +have_pat=0 +files_with_matches=0 +files_without_matches=0 +no_filename=0 +with_filename=0 + +while test $# -ne 0; do + option=$1 + shift + optarg= + + case $option in + (-[0123456789abcdhHiIKLlnoqrRsTuUvVwxyzZ]?*) + arg2=-\'$(expr "X${option}X" : 'X-.[0-9]*\(.*\)' | sed "$escape") + eval "set -- $arg2 "'${1+"$@"}' + option=$(expr "X$option" : 'X\(-.[0-9]*\)');; + (--binary-*=* | --[lm]a*=* | --reg*=*) + ;; + (-[ABCDefm] | --binary-* | --file | --[lm]a* | --reg*) + case ${1?"$option option requires an argument"} in + (*\'*) + optarg=" '"$(printf '%sX\n' "$1" | sed "$escape");; + (*) + optarg=" '$1'";; + esac + shift;; + (--) + break;; + (-?*) + ;; + (*) + case $option in + (*\'*) + operands="$operands '"$(printf '%sX\n' "$option" | sed "$escape");; + (*) + operands="$operands '$option'";; + esac + ${POSIXLY_CORRECT+break} + continue;; + esac + + case $option in + (-[drRzZ] | --di* | --exc* | --inc* | --rec* | --nu*) + printf >&2 '%s: %s: Option not supported\n' "$0" "$option" + exit 2;; + (-[ef]* | --file | --file=* | --reg*) + have_pat=1;; + (--h | --he | --hel | --help) + echo "$usage" || exit 2 + exit;; + (-H | --wi | --wit | --with | --with- | --with-f | --with-fi \ + | --with-fil | --with-file | --with-filen | --with-filena | --with-filenam \ + | --with-filename) + with_filename=1 + continue;; + (-l | --files-with-*) + files_with_matches=1;; + (-L | --files-witho*) + files_without_matches=1;; + (--no-f*) + no_filename=1;; + (-V | --v | --ve | --ver | --vers | --versi | --versio | --version) + echo "$version" || exit 2 + exit;; + esac + + case $option in + (*\'?*) + option=\'$(expr "X${option}X" : 'X\(.*\)' | sed "$escape");; + (*) + option="'$option'";; + esac + + grep="$grep $option$optarg" +done + +eval "set -- $operands "'${1+"$@"}' + +if test $have_pat -eq 0; then + case ${1?"Missing pattern; try \`${0##*/} --help' for help"} in + (*\'*) + grep="$grep -- '"$(printf '%sX\n' "$1" | sed "$escape");; + (*) + grep="$grep -- '$1'";; + esac + shift +fi + +if test $# -eq 0; then + set -- - +fi + +exec 3>&1 +res=0 + +for i; do + case $i in + *[-.][zZ] | *_z | *[-.]gz | *.t[ag]z) uncompress="gzip -cdfq";; + *[-.]bz2 | *[-.]tbz | *.tbz2) uncompress="bzip2 -cdfq";; + *) uncompress="$xz -cdfq";; + esac + # Fail if xz or grep (or sed) fails. + xz_status=$( + exec 5>&1 + (eval "$uncompress" -- "$i" 5>&-; echo $? >&5) 3>&- | + if test $files_with_matches -eq 1; then + eval "$grep" -q && { printf '%s\n' "$i" || exit 2; } + elif test $files_without_matches -eq 1; then + eval "$grep" -q || { + r=$? + if test $r -eq 1; then + printf '%s\n' "$i" || r=2 + fi + exit $r + } + elif test $with_filename -eq 0 && + { test $# -eq 1 || test $no_filename -eq 1; }; then + eval "$grep" + else + case $i in + (*' +'* | *'&'* | *'\'* | *'|'*) + i=$(printf '%s\n' "$i" | + sed ' + $!N + $s/[&\|]/\\&/g + $s/\n/\\n/g + ');; + esac + sed_script="s|^|$i:|" + + # Fail if grep or sed fails. + r=$( + exec 4>&1 + (eval "$grep" 4>&-; echo $? >&4) 3>&- | sed "$sed_script" >&3 4>&- + ) || r=2 + exit $r + fi >&3 5>&- + ) + r=$? + test "$xz_status" -eq 0 || test "$xz_status" -eq 2 || r=2 + test $res -lt $r && res=$r +done +exit $res |