1#!/bin/sh 2# 3# $NetBSD: zgrep,v 1.5 2006/05/03 16:48:29 yamt Exp $ 4# 5# Copyright (c) 2003 Thomas Klausner. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 3. The name of the author may not be used to endorse or promote products 16# derived from this software without specific prior written permission. 17# 18# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29grep=/usr/bin/grep 30zcat=/usr/bin/zcat 31 32endofopts=0 33pattern_found=0 34grep_args="" 35hyphen=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 $2" 71 shift 2 72 ;; 73 --) 74 shift 75 endofopts=1 76 ;; 77 -) 78 hyphen=1 79 shift 80 ;; 81 -*) 82 grep_args="${grep_args} $1" 83 shift 84 ;; 85 *) 86 # pattern to grep for 87 endofopts=1 88 ;; 89 esac 90done 91 92# if no -e option was found, take next argument as grep-pattern 93if [ ${pattern_found} -lt 1 ] 94then 95 if [ $# -ge 1 ]; then 96 pattern="$1" 97 shift 98 elif [ ${hyphen} -gt 0 ]; then 99 pattern="-" 100 else 101 echo "${prg}: missing pattern" >&2 102 exit 1 103 fi 104fi 105 106# call grep ... 107if [ $# -lt 1 ] 108then 109 # ... on stdin 110 ${zcat} -fq - | ${grep} ${grep_args} -- "${pattern}" - 111else 112 # ... on all files given on the command line 113 while [ $# -gt 0 ] 114 do 115 ${zcat} -fq -- "$1" | ${grep} -H --label="${1}" ${grep_args} -- "${pattern}" - 116 shift 117 done 118fi 119 120exit 0 121