#!/bin/sh

_usage () {
	cat<<EOF
Usage: ${1##*/} [OPTIONS] ISOFILE

Dump optical disc to ISOFILE (without extension).

Options:

  -h:       Show this help.
  -d DRIVE: Set optical drive to use (e.g. 'sr1').

EOF
}

DRIVE=/dev/sr0
while getopts ":hd:" opt; do
	case $opt in
	h)
		_usage "$0"
		exit 1 ;;
	d)
		DRIVE=/dev/$OPTARG ;;
	\?)
		_usage "$0"
		exit 1 ;;
	esac
done

shift $(($OPTIND - 1))

if [ $# -eq 0 ]; then
	_usage "$0"
	exit 1
fi

if ! command -v readcd >/dev/null 2>&1; then
	echo >&2 "'readcd' not found in PATH. Exiting."
	exit 1
fi

## Fast?
readcd dev=$DRIVE f="$1.iso" -v retries=5 timeout=30 -noerror

## Slow
# readcd f="$1.iso" -v retries=32 timeout=30 -s speed=16 -noerror

# dd if=$DRIVE of='$1.iso' bs=2048 count=$(isosize -d 2048 $DRIVE) conv=sync,notrunc