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76 lines
1.6 KiB
Plaintext
76 lines
1.6 KiB
Plaintext
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#!/bin/sh
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# Bzgrep wrapped for bzip2,
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# adapted from zgrep by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.
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## zgrep notice:
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## zgrep -- a wrapper around a grep program that decompresses files as needed
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## Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>
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PATH="/usr/bin:$PATH"; export PATH
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prog=`echo $0 | sed 's|.*/||'`
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case "$prog" in
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*egrep) grep=${EGREP-egrep} ;;
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*fgrep) grep=${FGREP-fgrep} ;;
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*) grep=${GREP-grep} ;;
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esac
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pat=""
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while test $# -ne 0; do
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case "$1" in
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-e | -f) opt="$opt $1"; shift; pat="$1"
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if test "$grep" = grep; then # grep is buggy with -e on SVR4
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grep=egrep
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fi;;
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-A | -B) opt="$opt $1 $2"; shift;;
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-*) opt="$opt $1";;
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*) if test -z "$pat"; then
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pat="$1"
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else
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break;
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fi;;
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esac
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shift
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done
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if test -z "$pat"; then
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echo "grep through bzip2 files"
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echo "usage: $prog [grep_options] pattern [files]"
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exit 1
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fi
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list=0
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silent=0
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op=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`
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case "$op" in
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*l*) list=1
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esac
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case "$op" in
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*h*) silent=1
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esac
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if test $# -eq 0; then
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bzip2 -cdfq | $grep $opt "$pat"
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exit $?
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fi
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res=0
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for i do
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if test -f "$i"; then :; else if test -f "$i.bz2"; then i="$i.bz2"; fi; fi
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if test $list -eq 1; then
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bzip2 -cdfq "$i" | $grep $opt "$pat" 2>&1 > /dev/null && echo $i
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r=$?
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elif test $# -eq 1 -o $silent -eq 1; then
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bzip2 -cdfq "$i" | $grep $opt "$pat"
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r=$?
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else
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j=${i//\\/\\\\}
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j=${j//|/\\|}
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j=${j//&/\\&}
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j=`printf "%s" "$j" | tr '\n' ' '`
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bzip2 -cdfq "$i" | $grep $opt "$pat" | sed "s|^|${j}:|"
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r=$?
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fi
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test "$r" -ne 0 && res="$r"
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done
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exit $res
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