www.pudn.com > RakNet-2.52.zip > bzgrep

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