1#!/bin/sh 2# 3# $NetBSD: zgrep,v 1.4 2004/05/25 07:09:09 mrg 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="" 35 36prg=$0 37 38# handle being called 'zegrep' or 'zfgrep' 39case ${prg} in 40 *zegrep) 41 grep_args="-E";; 42 *zfgrep) 43 grep_args="-F";; 44esac 45 46# skip all options and pass them on to grep taking care of options 47# with arguments, and if -e was supplied 48 49while [ $# -gt 0 -a ${endofopts} -eq 0 ] 50do 51 case $1 in 52 # from GNU grep-2.5.1 -- keep in sync! 53 -[ABCDXdefm]) 54 case $1 in 55 -e) 56 pattern_found=1;; 57 *) 58 ;; 59 esac 60 61 if [ $# -lt 2 ] 62 then 63 echo "${prg}: missing argument for ${saved_arg} flag" >&2 64 exit 1 65 fi 66 grep_args="${grep_args} $1 $2" 67 shift 2 68 ;; 69 --) 70 grep_args="${grep_args} $1" 71 shift 72 endofopts=1 73 ;; 74 -) 75 endofopts=1 76 ;; 77 -*) 78 grep_args="${grep_args} $1" 79 shift 80 ;; 81 *) 82 # pattern to grep for 83 endofopts=1 84 ;; 85 esac 86done 87 88# if no -e option was found, take next argument as grep-pattern 89if [ ${pattern_found} -lt 1 ] 90then 91 if [ $# -lt 1 ] 92 then 93 echo "${prg}: missing pattern" >&2 94 exit 1 95 fi 96 pattern=$1 97 shift 98fi 99 100# call grep ... 101if [ $# -lt 1 ] 102then 103 # ... on stdin 104 ${zcat} -fq - | ${grep} ${grep_args} "${pattern}" - 105else 106 # ... on all files given on the command line 107 while [ $# -gt 0 ] 108 do 109 ${zcat} -fq -- "$1" | ${grep} -H --label="${1}" "${pattern}" ${grep_args} - 110 shift 111 done 112fi 113 114exit 0 115