#!/bin/sh
find . -name "*.gif" | while read giffile
do
	pngfile=`echo $giffile | sed 's/gif$/png/'`
	if [ -f $pngfile ]
	then
		echo "There is already a png file for $giffile"
		echo "Please check what to do"
		#display $giffile $pngfile
		exit 2
	fi
done 
[ $? == 2 ] && exit 3
find . -name "*.gif" | while read gifagain
do
	bname=`basename $gifagain`
	gbname=`basename $gifagain|sed 's/\./\\\\./g'`
	##echo "$gbname"
	cnt=`grep -lr "$gbname" . | grep -v "/CVS/" | wc -l | xargs echo`
	#echo ....
	#grep -lr $bname . | grep -v "/CVS/"
	#echo ....
	if [ "$cnt" != "0" ]
	then
		echo "===== $gifagain is used as $bname in ====="
		grep -lr $gbname . | grep -v "/CVS/"
		echo "=========================================="
		exit 4
	fi
done
[ $? == 4 ] && exit 5
echo "Ready to go ? Enter to go or ctrl-c to abort"
read foo
find . -name "*.gif" | while read giffile
do
	pngfile=`echo $giffile | sed 's/gif$/png/'`
	gif2png -O $giffile
	cvs add $pngfile
	cvs delete -f $giffile
done