#!/bin/sh

#$Id: replid,v 1.2 1999/11/06 21:23:19 bittner Exp $
# Initially coding Jiri Bittner
    
if [ $# -lt 3 ]; then echo "Usage: replid strA strB file_list $1 $2"; fi

STR1=$1
STR2=$2

shift
shift
FILES=`grep -l $STR1 $*`

echo $FILES

SEPARATORS='[^a-zA-Z0-9_\.]'
BACKUPDIR="Backup"

if [ ! -d $BACKUPDIR ]; then  mkdir $BACKUPDIR; fi

for FILE in $FILES; do
 echo "Replacing in $FILE"
 cp $FILE $BACKUPDIR/$FILE
 CMD='-e s/\('$SEPARATORS'\)'$STR1'\('$SEPARATORS'\)/\1'$STR2'\2/g -e  s/^'$STR1'\('$SEPARATORS'\)/'$STR2'\1/g  -e  s/\('$SEPARATORS'\)'$STR1'$/\1'$STR2'/g -e  s/^'$STR1'$/'$STR2'/g'
# echo $CMD
 sed $CMD < $BACKUPDIR/$FILE > $FILE.tmp
 mv $FILE.tmp $FILE
done