#!/bin/bash
# cue2mp3 by jipe <jipe@users.sourceforge.net>
# a simple shell script to handle audio files according to the informations contained in a ".cue" file
# requires mpgtx, lame, mac, and flac
# supported audio formats are ape, mp3 and flac
# other formats can be added if required, just ask me, or do it yourself :)
# this script is under the Gnu Public Licence v3.0 <http://www.gnu.org/licenses/gpl-3.0.txt>

case $1 in -h|-help) echo "usage: cue2mp3 [ ape | flac | mp3 | -h | -help ] file.cue"; exit 0 ;; esac
which mpgtx &>/dev/null || { echo requirement: mpgtx missing; exit 64; }
which lame &>/dev/null || { echo requirement: lame missing; exit 64; }

FORMAT=$1
shift
NAME="${@%.cue}"
[[ -e "${NAME}.${FORMAT}" ]] || { echo "${NAME}.${FORMAT}" doesn\'t exist; exit 63; }

title () {
	n=1
	grep " TITLE" "${NAME}".cue | while IFS='"' read a b c; do 
		N=$(printf "%02d" $n)
		if [ -e chunk-"$n".mp3 ]; then 
		mv chunk-"$n".mp3 "$N - ${b//\//-}.mp3"
		else mv chunk-"$N".mp3 "$N - ${b//\//-}.mp3"
		fi
		((n++))
	done
}


splittracks () {
	count=1
	grep "INDEX 01" "${NAME}".cue | while IFS=$' \t\n\r:' read a b c d e f; do 
		track="$c:$d.$e"
		if ((count==1)); then
			printf "[-"
			else printf "${track}] ]${track}-"
		fi
	((count++))
	done
	printf "]"
}

case $FORMAT in
	ape)
		which mac &>/dev/null || { echo requirement: mac missing; exit 64; }	
		mac "${NAME}".ape "${NAME}".wav -d
		lame -b 320 -m j "${NAME}".wav "${NAME}".mp3
		rm -f "${NAME}".wav
		mpgsplit "${NAME}".mp3 $(splittracks)
		rm -f "${NAME}".mp3
		;;
	mp3)
		mv "${NAME}.mp3" tmp.mp3
		lame -m j --resample 44.1 -b 320 --mp3input tmp.mp3 "${NAME}.mp3"
		mpgsplit "${NAME}".mp3 $(splittracks)
		rm -f "${NAME}".mp3
		mv tmp.mp3 "${NAME}.mp3"
		;;
	flac)
		which flac &>/dev/null || { echo requirement: flac missing; exit 64; }
		flac -d "${NAME}".flac
		lame -b 320 -m j "${NAME}".wav "${NAME}".mp3
		rm -f "${NAME}".wav
		mpgsplit "${NAME}".mp3 $(splittracks)
		rm -f "${NAME}".mp3
		;;
	*)
		echo "usage: cue2mp3 [ ape | flac | mp3 | -h | -help ] file.cue"
		;;
esac	

title

exit 0