1#!/bin/sh 2# 3# $NetBSD: zgrep,v 1.7 2008/05/08 15:35:23 wiz Exp $ 4# $DragonFly: src/usr.bin/gzip/zgrep,v 1.1 2004/10/26 11:19:31 joerg Exp $ 5# 6# Copyright (c) 2003 Thomas Klausner. 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28grep=/usr/bin/grep 29zcat=/usr/bin/zcat 30 31endofopts=0 32pattern_found=0 33grep_args="" 34hyphen=0 35silent=0 36 37prg=$0 38 39# handle being called 'zegrep' or 'zfgrep' 40case ${prg} in 41 *zegrep) 42 grep_args="-E";; 43 *zfgrep) 44 grep_args="-F";; 45esac 46 47# skip all options and pass them on to grep taking care of options 48# with arguments, and if -e was supplied 49 50while [ $# -gt 0 -a ${endofopts} -eq 0 ] 51do 52 case $1 in 53 # from GNU grep-2.5.1 -- keep in sync! 54 -[ABCDXdefm]) 55 if [ $# -lt 2 ] 56 then 57 echo "${prg}: missing argument for $1 flag" >&2 58 exit 1 59 fi 60 case $1 in 61 -e) 62 pattern="$2" 63 pattern_found=1 64 shift 2 65 break 66 ;; 67 *) 68 ;; 69 esac 70 grep_args="${grep_args} $1 $2" 71 shift 2 72 ;; 73 --) 74 shift 75 endofopts=1 76 ;; 77 -) 78 hyphen=1 79 shift 80 ;; 81 -h) 82 silent=1 83 shift 84 ;; 85 -*) 86 grep_args="${grep_args} $1" 87 shift 88 ;; 89 *) 90 # pattern to grep for 91 endofopts=1 92 ;; 93 esac 94done 95 96# if no -e option was found, take next argument as grep-pattern 97if [ ${pattern_found} -lt 1 ] 98then 99 if [ $# -ge 1 ]; then 100 pattern="$1" 101 shift 102 elif [ ${hyphen} -gt 0 ]; then 103 pattern="-" 104 else 105 echo "${prg}: missing pattern" >&2 106 exit 1 107 fi 108fi 109 110# call grep ... 111if [ $# -lt 1 ] 112then 113 # ... on stdin 114 ${zcat} -fq - | ${grep} ${grep_args} -- "${pattern}" - 115else 116 # ... on all files given on the command line 117 if [ ${silent} -lt 1 ]; then 118 grep_args="-H ${grep_args}" 119 fi 120 while [ $# -gt 0 ] 121 do 122 ${zcat} -fq -- "$1" | ${grep} --label="${1}" ${grep_args} -- "${pattern}" - 123 shift 124 done 125fi 126 127exit 0 128