cuecutter

#!/usr/bin/env python

from optparse import OptionParser
import multiprocessing
import subprocess

import re

txt='    INDEX 01 00:00:00'

re1='.*?'   # Non-greedy match on filler
re2='(INDEX)'   # Word 1
re3='( )'   # White Space 1
re4='(01)'  # Integer Number 1
re5='( )'   # White Space 2
re6='(\\d+)'    # Integer Number 2
re7='(:)'   # Any Single Character 1
re8='(\\d+)'    # Integer Number 3
re9='(:)'   # Any Single Character 2
re10='(\\d+)'   # Integer Number 4

rg = re.compile(re1+re2+re3+re4+re5+re6+re7+re8+re9+re10,re.IGNORECASE|re.DOTALL)

def work(cmd):
    subprocess.call(cmd, shell=True)
    print ">>> done", cmd

def parseSheet(sheet):
    s = open(sheet).read()
    times = []
    for line in s.splitlines():
        m = rg.search(line)
        if m:
            times.append(m.group(5) + ':' + m.group(7) + ':' + m.group(9))
    return times
    
def doit(cuesheet, file, output, dropfirst=False, droplast=False):
    times = parseSheet(cuesheet)
    cmds = []
    last = '00:00.00'
    if times and times[0] == '00:00:00':
        times = times[1:]
        
    track = 1
    total = len(times)
    if dropfirst:
        total -= 1
    if droplast:
        total -= 1
        
    for time in times:
        time = time[:time.rfind(":")] + '.' + time[time.rfind(":")+1:]

        if not dropfirst:
            cmds.append('nice flac -s --skip %s --until %s "%s" -o - | nice flac -s -8 - -o "%s"' %
                        (last, time, file, output % ("%02d"% track)))
            track += 1
        else:
            dropfirst = False
        last = time

    if not droplast:
        cmds.append('nice flac -s --skip %s "%s" -o - | nice flac -s -8 - -o "%s"' %
                    (last, file, output % ("%02d"% track)))
        
    count = multiprocessing.cpu_count()
    pool = multiprocessing.Pool(processes=count)
    pool.map(work, cmds)
    #print '\n'.join(cmds)


if __name__ == "__main__":
    usage = """
    cuecutter [-f] [-l] <cuesheet> <file> <output>
              <output> = "blahblahblah-t%s.flac"
              -f = skip first track
              -l = skip last track
    """
    parser = OptionParser(usage)
    parser.add_option("-f", action="store_true", dest="dropfirst", help="drop first track")
    parser.add_option("-l", action="store_true", dest="droplast",  help="drop last track")
    options, args = parser.parse_args()

    if len(args) != 3:
        print usage
        
    doit(args[0], args[1], args[2], options.dropfirst, options.droplast)