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#!/bin/sh
#
# Copyright (c) April 1996 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL [your name] OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# zgrep - search possibly compressed files for a regular expression
#
# $FreeBSD$
PATH=/bin:/usr/bin:$PATH; export PATH
# grep variant
case "$0" in
*egrep) grep=${EGREP-egrep} ;;
*fgrep) grep=${FGREP-fgrep} ;;
*) grep=${GREP-grep} ;;
esac
gzip=gzip gzipopt="-cdfq" pattern= grepopt= files= line= header=
# check options
while getopts "0123456789A:B:CEFGVX:bce:f:hiLlnqsvwxy" option
do
case "$option" in
e|f) pattern="-$option $OPTARG";; # -f file
l|L) line=-$option; grepopt="$grepopt -$option";;
h|q) header=-h; grepopt="$grepopt -$option";;
# rest
[0-9CEFGVbchiLlnqsvwxy]) grepopt="$grepopt -$option";;
[ABXef]) grepopt="$grepopt -$option $OPTARG";;
esac
done
shift $(($OPTIND - 1))
# check pattern
case X"$pattern" in
X) case $# in
0) echo "usage: $0 [grep_options] pattern [files]"; exit 1;;
*) pattern=$1; shift;;
esac
esac
files="$@"
# no shell loop neccessary for option -q or -h
# and a single file or reading from stdin
case "$header"X"$#" in
-h*|-q*|X0|X1) $gzip $gzipopt -- $files | $grep $grepopt -- "$pattern"
exit $?;;
esac
for f in $files
do
case "$line" in
-l) if $gzip $gzipopt -- $f |
$grep $grepopt -- "$pattern" >/dev/null
then
echo $f
fi
;;
-L) if $gzip $gzipopt -- $f |
$grep $grepopt -- "$pattern" >/dev/null; then :
else
echo $f
fi
;;
*) $gzip $gzipopt -- $f | $grep $grepopt -- "$pattern" |
sed "s%^%${f}:%"
;;
esac
done
|
