Convert Ogg Vorbis to M4A

#!/usr/bin/zsh

DELETE_WAV=true

while true
do
    case "$1" in
        -r)
            shift;
            RATE=$1
            shift;
        ;;
        -d)
            DELETE=true
            shift;
        ;;

        *)
            break
        ;;
    esac
done

for file in "$@"
do
    OGGFILE="$file"
    WAVFILE="${OGGFILE%.ogg}".wav
    AACFILE="${OGGFILE%.ogg}".m4a

    FAACFLAGS=$(ogginfo "$OGGFILE" | grep '^[ 	][ 	]*[A-Z][A-Z]*=' | sed -e 's/^.//'  -e 's/\([A-Z][A-Z]*\)=\(.*\)$/--\1 "\2"/' -e 's/ARTIST/artist/' -e 's/ALBUM/album/' -e 's/DATE/year/' -e 's/TRACKNUMBER/track/' -e 's/TITLE/title/' -e '/--COUNTRY/d' | tr '\n' ' ')
    echo "FAACFLAGS=$FAACFLAGS"
    if [ ! -f "${WAVFILE}" ]; then
        oggdec "$OGGFILE"
    fi
    eval faac -w "$FAACFLAGS" \""$WAVFILE"\"
    $DELETE_WAV && rm "$WAVFILE"
done