#!/bin/sh

pname="$0"
pname="`basename $pname`"

function usage {
    echo "Usage: $pname prefix bindir"
    echo "bindir should be the binary installation directory,"
    echo ''
    echo 'This command was created to setup correctly the path used in '
    echo 'scripts that launch some other program with exec, like for '
    echo 'Java programs.'
    echo ''
	echo 'Usage: update-program-prefix $prefix $bindir'
	echo 'Usage: check-program-prefix          $bindir'
    echo ''
}




case "$pname" in

update-program-prefix)
	if [ $# != 2 ] ; then
        usage
		exit 1
	fi

	prefix="$1"
	bindir="$2"

	if [ ! -d $bindir ] ; then
		echo "$pname error: $bindir is not a directory."
        usage
		exit 2
	fi

	for script in `file "$bindir"/*|grep script|sed -e 's/:.*//'` ; do
		mv "$script" "${script}~" \
		&& sed -e 's/exec[     ]\([^     ]*\)[     ]/exec '"${prefix}"'\1 /' \
			< "${script}~" > "$script" \
		&& rm "${script}~"
		chmod 755 "${script}"
	done

	exit 0
    ;;

check-program-prefix)
	if [ $# != 1 ] ; then
        usage
		exit 1
	fi

	bindir="$1"

	if [ ! -d $bindir ] ; then
		echo "$pname error: $bindir is not a directory."
        usage
		exit 2
    fi

	for script in `file "$bindir"/*|grep script|sed -e 's/:.*//'` ; do
		echo "`basename ${script}`	`grep 'exec ' "$script"|sed -e 's/exec[     ]\([^     ]*\)[     ].*/\1/'`"
	done

	exit 0
	;;

*)
	echo "${pname} error: Please update your sym-links..."
    usage
	exit 1
	;;
esac
exit 0