#!/bin/bash
OK=0
NOK=1

findmgroot(){

	PRG="$0"

	while [ -h "$PRG" ]; do
		ls=`ls -ld "$PRG"`
		link=`expr "$ls" : '.*-> \(.*\)$'`
		if expr "$link" : '.*/.*' > /dev/null; then
			PRG="$link"
		else
			PRG=`dirname "$PRG"`/"$link"
		fi
	done
	
	PRGDIR=`dirname "$PRG"`
	MGROOT=`cd "$PRGDIR/../.." ; pwd`
	if [ -z "$MGROOT" ]; then
		echo "ERR_MGROOT_NOT_DEFINED"
		return $ERR_MGROOT_NOT_DEFINED
	else
		return $OK
	fi
}


findmgroot
MYGRID_LICENSE_FILE="$MGROOT/resources/CODELICENSE"
MYGRID_LICENSE_FILE_LENGTH=`cat $MYGRID_LICENSE_FILE | wc -l`

if [ $# -lt 1 ];then
#	usage
	exit 0
fi

dir=$1

cont=0
contok=0
    
for i in `find $dir -name "*.java"`
do
	cont=`expr $cont + 1`

   MYGRID_LICENSE_TMP=$i.tmp.$$
   head -n $MYGRID_LICENSE_FILE_LENGTH $i > $MYGRID_LICENSE_TMP
   diff $MYGRID_LICENSE_FILE $MYGRID_LICENSE_TMP > /dev/null
   if [ $? -eq 0 ]; then
   	contok=`expr $contok + 1`
   fi
   rm -f $MYGRID_LICENSE_TMP 
done

if [ ${cont} -eq ${contok} ]; then
        echo "-- License OK in $cont/$contok files --"
		exit $OK
else
        echo "-- Error on licenses --"
		exit $NOK
fi