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#!/bin/sh # zgrep -- 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, 2009, 2010 Free Software # Foundation # Copyright (C) 1993 Jean-loup Gailly # 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 3 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. # You should have received a copy of the GNU General Public License along # with this program; if not, write to the Free Software Foundation, Inc., # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. bindir='/bin' case $1 in --__bindir) bindir=${2?}; shift; shift;; esac PATH=$bindir:$PATH grep='${GREP-'\''/bin/grep'\''}' args= version='zgrep (gzip) 1.6 Copyright (C) 2010-2013 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law. Written by Jean-loup Gailly.' 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 <bug-gzip@gnu.org>." # sed script to escape all ' for the shell, and then (to handle trailing # newlines correctly) append ' to the last line. escape=' s/'\''/'\''\\'\'''\''/g $s/$/'\''/ ' 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 $option in (-[0123456789EFGHIKLPRTUVZabchilnoqrsuvwxyz]*[!0123456789]*) arg2=-\'$(LC_ALL=C expr "X$option" : 'X-.[0-9]*$.*$' | LC_ALL=C sed "$escape") eval "set -- $arg2 "'${1+"$@"}' option=$(LC_ALL=C expr "X$option" : 'X$-.[0-9]*$');; (--binary-*=* | --[lm]a*=* | --reg*=*) ;; (-[ABCDXdefm] | binary-* | --file | --[lm]a* | --reg*) case ${1?"$option option requires an argument"} in (*\'*) optarg=" '"$(printf '%s\n' "$1" | LC_ALL=C sed "$escape");; (*) optarg=" '$1'";; esac shift;; (-f?*\'*) optarg=" '"$(LC_ALL=C expr "X$option" : 'X-f$.*$' | LC_ALL=C sed "$escape") option=-f;; (-f?*) optarg=" '"$(LC_ALL=C expr "X$option" : 'X-f$.*$')\' option=-f;; (--file=*\'*) optarg=" '"$(LC_ALL=C expr "X$option" : 'X--file=$.*$' | LC_ALL=C sed "$escape") option=--file;; (--file=*) optarg=" '"$(LC_ALL=C expr "X$option" : 'X--file=$.*$')\' option=--file;; (--) break;; (-?*) ;; (*) case $option in (*\'*) operands="$operands '"$(printf '%s\n' "$option" | LC_ALL=C 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;; (-e* | --reg*) have_pat=1;; (-f | --file) # The pattern is coming from a file rather than the command-line. # If the file is actually stdin then we need to do a little # magic, since we use stdin to pass the gzip output to grep. # Turn the -f option into an -e option by copying the file's # contents into OPTARG. case $optarg in (" '-'" | " '/dev/stdin'" | " '/dev/fd/0'") option=-e optarg=" '"$(sed "$escape") || exit 2;; esac have_pat=1;; (--h | --he | --hel | --help) echo "$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;; (-h | --no-f*) no_filename=1;; (-V | --v | --ve | --ver | --vers | --versi | --versio | --version) echo "$version" || exit 2 exit;; esac case $option in (*\'?*) option=\'$(printf '%s\n' "$option" | LC_ALL=C sed "$escape");; (*) option="'$option'";; esac args="$args $option$optarg" done eval "set -- $operands "'${1+"$@"}' if test $have_pat -eq 0; then case ${1?"missing pattern; try \`$0 --help' for help"} in (*\'*) args="$args -- '"$(printf '%s\n' "$1" | LC_ALL=C sed "$escape");; (*) args="$args -- '$1'";; esac shift fi if test $# -eq 0; then set -- - elif test 1 -lt $# && test $no_filename -eq 0; then with_filename=1 fi l_e=$(eval "(echo e | $grep -H --label=l e) 2>/dev/null") && test "$l_e" = l:e gnuish_grep="test $? -eq 0" if $gnuish_grep && test $with_filename -eq 1; then grep="$grep -H" fi exec 3>&1 res=0 for i do # Fail if gzip or grep (or sed) fails. gzip_status=$( exec 5>&1 (gzip -cdfq -- "$i" 5>&-; echo $? >&5) 3>&- | if test $files_with_matches -eq 1; then eval "$grep$args" >/dev/null && { printf '%s\n' "$i" || exit 2; } elif test $files_without_matches -eq 1; then eval "$grep$args" >/dev/null || { r=$? if test $r -eq 1; then printf '%s\n' "$i" || r=2 fi exit $r } elif $gnuish_grep && test "$i" != -; then eval "$grep --label \"\$i\"$args" elif $gnuish_grep || test $with_filename -eq 0; then eval "$grep$args" else case $i in (*' '* | *'&'* | *'\'* | *'|'*) icolon=$(printf '%s\n' "$i:" | LC_ALL=C sed -e 's/[&\|]/\\&/g' -e '$!s/$/\\/');; (*) icolon="$i:";; esac sed_script="s|^|$icolon|" # Fail if grep or sed fails. r=$( exec 4>&1 (eval "$grep$args" 4>&-; echo $? >&4) 3>&- | LC_ALL=C sed "$sed_script" >&3 4>&- ) && exit $r r=$? test 1 -lt $r && exit $r || exit 2 fi >&3 5>&- ) r=$? test 128 -lt $r && exit $r test "$gzip_status" -eq 0 || test "$gzip_status" -eq 2 || r=2 test $res -lt $r && res=$r done exit $res