#!/bin/csh
###############################################################
# This script returns the ID of the CD that is in the drive,
# if there is one, and returns nothing if there is not one.
# It returns status 0 if there is one, 1 if there is not.
##############################################################

set device = '/dev/cdrom'

# Find out the ID of the disc that is in the CD device.
# Make sure that it is valid.
set discid = `cdda2wav -D $device -I cooked_ioctl -v toc -N -J |& grep "CDDB discid" | cut -f 3 -d\ `
if ( 0x != `echo $discid | head -c 2`) then
	exit 1
endif

echo $discid
exit 0