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### default variables ###

[ -z "$CDMOUNT" ] && export CDMOUNT="/media/cdrom"

### functions ###

function checkcd
{
	# usage: checkcd md5sum md5file
	checksum=$(md5sum $2 2>/dev/null|awk '{print $1}')

	if [ "$checksum" != "$1" ]; then
		return 1
	fi

	return 0
}

function getcd
{
	# usage: getcd cdnum [md5sum] [md5file]
	# note we're redirecting to stderr to ensure questions
	# are always shown

	if [ $# -ge 3 ]; then
		answer=""
		while [ $(checkcd $2 $CDMOUNT/$3; echo $?) -ne 0 ]; do
			echo " * Insert CD $1 and press any key, or press 'c' to continue without checking" 1>&2
			read -sn 1 answer
			if [ "$answer" == 'c' ]; then
				return 0
			fi
		done
	else
		echo "* Please insert CD $1 and press any key" 1>&2
		read -sn 1
	fi

	return 0
}

function copycdextras
{
	# usage: copycdextras cdnum
	# essentially a case insensitive cp -R cd#/*
	CDNUMBER=$1

	for filename in $(find $CDMOUNT/[cC][dD]$CDNUMBER/ -type f || die); do
		relativepath=$(echo $filename|gawk -F "$CDMOUNT/[cC][dD]$CDNUMBER" '{print   $2}'|tr A-Z a-z)
		cp $filename "$TARGETDIR"/$relativepath || die
	done
}