diffFlacMp3

#!/bin/bash
# 
# diffFlacMp3 Copyright (c) 2010 by Korbinian Pauli
#
# This script checks if all FLAC interpret and album directories exist in 
# the MP3 directory. If not it will create them and convert all FLACs to 
# MP3s in these directories.
#
# ---------------------------------------------------------------------- 
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation version 2 of 
# the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  
# 02110-1301, USA.
#
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
#
# ---------------------------------------------------------------------- 
#
# Directory structure:
# ~/Music/_flac
# ~/Music/_mp3
#
# Under _flac you have to have following structure:
# ./interpret/album/title.flac
#
# flac2mp3 script has to be in your path. It's known to work under Ubuntu 
# 8.10, 9.04 and 9.10. Please have a look on http://bytemonkey.org/flac2mp3
# for flac2mp3 working correctly.
#
# Version 1.0 (2010-01-10) by Korbinian Pauli
# * initial version

baseUrl="~/Music"


function convertFlacs {
  d=`echo $1|grep "Only in"| grep "_flac"`
  if [ -n "${d}" ]; then
    d=`echo ${d}|sed -e "s/Only\ in\ //"`
    flacDir=`echo ${d}|cut -d ":" -f 1`
    album=`echo ${d}|cut -d ":" -f 2|sed -e 's/^[[:space:]]*//'`
    flacDir="${flacDir}/${album}"
    mp3Dir=`echo ${flacDir}|sed -e 's/_flac/_mp3/'` 
    mkdir -p "${mp3Dir}"
    flac2mp3 "${flacDir}" "${mp3Dir}" 
  fi
}


#Check interpret directories
diff "${baseUrl}/_flac/." "${baseUrl}/_mp3/"|while read d
do
  convertFlacs "${d}"
done


#Check album directories
ls -1 ${baseUrl}/_flac |while read file
do
  diff "${baseUrl}/_flac/${file}/." "${baseUrl}/_mp3/${file}"|while read d
  do
    convertFlacs "${d}"
  done
done