9b954397e0
compressed files (as reported by simonb) as well as not printing random warnings that zgrep isn't ready to handle.
115 lines
2.8 KiB
Bash
Executable File
115 lines
2.8 KiB
Bash
Executable File
#!/bin/sh
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#
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# $NetBSD: zgrep,v 1.4 2004/05/25 07:09:09 mrg Exp $
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#
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# Copyright (c) 2003 Thomas Klausner.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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grep=/usr/bin/grep
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zcat=/usr/bin/zcat
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endofopts=0
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pattern_found=0
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grep_args=""
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prg=$0
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# handle being called 'zegrep' or 'zfgrep'
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case ${prg} in
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*zegrep)
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grep_args="-E";;
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*zfgrep)
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grep_args="-F";;
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esac
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# skip all options and pass them on to grep taking care of options
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# with arguments, and if -e was supplied
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while [ $# -gt 0 -a ${endofopts} -eq 0 ]
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do
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case $1 in
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# from GNU grep-2.5.1 -- keep in sync!
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-[ABCDXdefm])
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case $1 in
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-e)
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pattern_found=1;;
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*)
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;;
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esac
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if [ $# -lt 2 ]
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then
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echo "${prg}: missing argument for ${saved_arg} flag" >&2
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exit 1
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fi
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grep_args="${grep_args} $1 $2"
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shift 2
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;;
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--)
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grep_args="${grep_args} $1"
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shift
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endofopts=1
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;;
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-)
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endofopts=1
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;;
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-*)
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grep_args="${grep_args} $1"
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shift
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;;
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*)
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# pattern to grep for
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endofopts=1
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;;
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esac
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done
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# if no -e option was found, take next argument as grep-pattern
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if [ ${pattern_found} -lt 1 ]
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then
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if [ $# -lt 1 ]
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then
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echo "${prg}: missing pattern" >&2
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exit 1
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fi
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pattern=$1
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shift
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fi
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# call grep ...
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if [ $# -lt 1 ]
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then
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# ... on stdin
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${zcat} -fq - | ${grep} ${grep_args} "${pattern}" -
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else
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# ... on all files given on the command line
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while [ $# -gt 0 ]
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do
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${zcat} -fq -- "$1" | ${grep} -H --label="${1}" "${pattern}" ${grep_args} -
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shift
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done
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fi
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exit 0
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