Script to split flac/ape CD rips by cue data and encode tracks to ogg vorbis files

cue-split.sh

#!/bin/sh

# Script to split flac/ape CD rips by cue data and encode tracks to ogg vorbis files.
#
# Put the script to a directory in your PATH.
#
# And then go to a directory containing .cue file and .flac/.ape file and run the command:
#   cue-split.sh
#
# Or if the .cue is not in utf-8, decode it providing the -c flag with the original encoding:
#   cue-split.sh -c cp1251
#
# Result:
#   Original .flac/.ape and .cue files are moved to orig/ subfolder.
#   Each track is extracted/encoded to current folder with the name like "trackNumber - trackTitle.ogg"
#   Each track is tagged with data from .cue file.
#
# Dependencies:
#   libc-bin (iconv) - to convert encoding of .cue file
#   libav-tools (avconv) - to decode .ape file
#   shntool (shnsplit) - to split .flac/.ape by .cue data
#   vorbis-tools (oggenc) - to encode to .ogg
#   cuetools (cuetag) - to apply tags from .cue to .ogg

while getopts ":c:" opt; do
  case $opt in
    c)
      ICONV_FROM="$OPTARG"
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      exit 1
      ;;
    :)
      echo "Option -$OPTARG requires an argument." >&2
      exit 1
      ;;
  esac
done

set_first () {
  eval "$1=\"\$2\""
}

if [ -f *.ape ]
then
    set_first SND_FILE *.ape
    DECODE_APE=true
elif [ -f *.flac ]
then
    set_first SND_FILE *.flac
else
    exit 1
fi

if [ -n "$ICONV_FROM" ]
then
    for f in *.cue
    do
        echo "Converting $f from $ICONV_FROM to UTF-8"
        iconv -o "${f%.cue}.utf8.cue" -f "$ICONV_FROM" -t UTF-8 "$f"
    done
fi

if [ -f *.utf8.cue ]
then
    set_first CUE_FILE *.utf8.cue
elif [ -f *.cue ]
then
    set_first CUE_FILE *.cue
else
    exit 1
fi

mkdir -p orig || exit 2
mv *.log orig
mv "$SND_FILE" orig
SND_FILE="orig/$SND_FILE"
mv *.cue orig
CUE_FILE="orig/$CUE_FILE"

if [ -n "$DECODE_APE" ]
then
    avconv -i "$SND_FILE" "${SND_FILE%.ape}.wav" || exit 3
    SND_FILE="${SND_FILE%.ape}.wav"
fi

shnsplit -f "$CUE_FILE" -t "%n - %t" -o "cust ext=ogg oggenc -q 5 -o %f -" "$SND_FILE" || exit 3

if [ -n "$DECODE_APE" ]
then
    rm "$SND_FILE"
fi

rm -f 00*

cuetag "$CUE_FILE" *.ogg || exit 4