#!/bin/bash
#
# Copyright 2008 Octavio Ruiz
# Distributed under the terms of the GNU General Public License v3
# $Header: $
#
# Yet Another FLAC to MP3 script
#
# Author:
#       Octavio Ruiz (Ta^3) <tacvbo@tacvbo.net>
# Thanks:
#       Those comments at:
#       http://www.linuxtutorialblog.com/post/solution-converting-flac-to-mp3
# WebPage:
#       https://github.com/tacvbo/yaflac2mp3/tree
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY. YOU USE AT YOUR OWN RISK. THE AUTHOR
# WILL NOT BE LIABLE FOR DATA LOSS, DAMAGES, LOSS OF PROFITS OR ANY
# OTHER  KIND OF LOSS WHILE USING OR MISUSING THIS SOFTWARE.
# See the GNU General Public License for more details.
 
LAME_OPTS="-V 0 --vbr-new"
 
id3v2=$(which id3v2)
old_IFS=${IFS}
IFS='
'
files=( `find . -type f -name '*flac'` )
 
for N_files in ${!files[@]}
  do
    vars=( `metaflac --no-utf8-convert --export-tags-to=- "${files[${N_files}]}"` )
 
    for N_vars in ${!vars[@]}
      do
        export "$(echo "${vars[${N_vars}]%=*}" | tr [:upper:] [:lower:])=${vars[${N_vars}]#*=}"
    done
 
    flac -dc "${files[${N_files}]}" |\
    lame --ignore-tag-errors --add-id3v2 ${LAME_OPTS} \
        ${artist:+--ta} ${artist} \
        ${tracknumber:+--tn} ${tracknumber} \
        ${title:+--tt} ${title} \
        ${album:+--tl} ${album} \
        ${date:+--ty} ${date} \
        ${genre:+--tg} ${genre} \
        ${comment:+--tc} ${comment} \
        - "${files[${N_files}]/\.flac/.mp3}"
 
    [[ -x ${id3v2} ]] && ${id3v2} \
        ${artist:+--artist} ${artist} \
        ${tracknumber:+--track} ${tracknumber} \
        ${title:+--song} ${title} \
        ${album:+--album} ${album} \
        ${date:+--year} ${date} \
        ${genre:+--genre} ${genre} \
        ${comment:+--comment} ${comment} \
        "${files[${N_files}]/\.flac/.mp3}"
 
done
IFS=${old_IFS}