cannam@89: #!/bin/sh
cannam@89: 
cannam@89: # Bzgrep wrapped for bzip2, 
cannam@89: # adapted from zgrep by Philippe Troin <phil@fifi.org> for Debian GNU/Linux.
cannam@89: ## zgrep notice:
cannam@89: ## zgrep -- a wrapper around a grep program that decompresses files as needed
cannam@89: ## Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>
cannam@89: 
cannam@89: PATH="/usr/bin:$PATH"; export PATH
cannam@89: 
cannam@89: prog=`echo $0 | sed 's|.*/||'`
cannam@89: case "$prog" in
cannam@89: 	*egrep)	grep=${EGREP-egrep}	;;
cannam@89: 	*fgrep)	grep=${FGREP-fgrep}	;;
cannam@89: 	*)	grep=${GREP-grep}	;;
cannam@89: esac
cannam@89: pat=""
cannam@89: while test $# -ne 0; do
cannam@89:   case "$1" in
cannam@89:   -e | -f) opt="$opt $1"; shift; pat="$1"
cannam@89:            if test "$grep" = grep; then  # grep is buggy with -e on SVR4
cannam@89:              grep=egrep
cannam@89:            fi;;
cannam@89:   -A | -B) opt="$opt $1 $2"; shift;;
cannam@89:   -*)	   opt="$opt $1";;
cannam@89:    *)      if test -z "$pat"; then
cannam@89: 	     pat="$1"
cannam@89: 	   else
cannam@89: 	     break;
cannam@89:            fi;;
cannam@89:   esac
cannam@89:   shift
cannam@89: done
cannam@89: 
cannam@89: if test -z "$pat"; then
cannam@89:   echo "grep through bzip2 files"
cannam@89:   echo "usage: $prog [grep_options] pattern [files]"
cannam@89:   exit 1
cannam@89: fi
cannam@89: 
cannam@89: list=0
cannam@89: silent=0
cannam@89: op=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`
cannam@89: case "$op" in
cannam@89:   *l*) list=1
cannam@89: esac
cannam@89: case "$op" in
cannam@89:   *h*) silent=1
cannam@89: esac
cannam@89: 
cannam@89: if test $# -eq 0; then
cannam@89:   bzip2 -cdfq | $grep $opt "$pat"
cannam@89:   exit $?
cannam@89: fi
cannam@89: 
cannam@89: res=0
cannam@89: for i do
cannam@89:   if test -f "$i"; then :; else if test -f "$i.bz2"; then i="$i.bz2"; fi; fi
cannam@89:   if test $list -eq 1; then
cannam@89:     bzip2 -cdfq "$i" | $grep $opt "$pat" 2>&1 > /dev/null && echo $i
cannam@89:     r=$?
cannam@89:   elif test $# -eq 1 -o $silent -eq 1; then
cannam@89:     bzip2 -cdfq "$i" | $grep $opt "$pat"
cannam@89:     r=$?
cannam@89:   else
cannam@89:     j=${i//\\/\\\\}
cannam@89:     j=${j//|/\\|}
cannam@89:     j=${j//&/\\&}
cannam@89:     j=`printf "%s" "$j" | tr '\n' ' '`
cannam@89:     bzip2 -cdfq "$i" | $grep $opt "$pat" | sed "s|^|${j}:|"
cannam@89:     r=$?
cannam@89:   fi
cannam@89:   test "$r" -ne 0 && res="$r"
cannam@89: done
cannam@89: exit $res