#!/usr/bin/python

import sys
import getopt
import re
import os
import string

outdir = "."
outstr = "%(file)s.wav"

if __name__ == '__main__':
    try:
        opts, args = getopt.getopt(sys.argv[1:], "d:o:")
    except getopt.GetoptError:
        print >>sys.stderr, "usage: dumwav [-d dir] [-o pattern] files"
        sys.exit(2)

    for opt, arg in opts:
        if opt == "-d":
            outdir = arg
        if opt == "-o":
            outstr = arg

    commands = {
        'ogg': 'ogg123 -d wav -f "%s/%s" "%s"',
        'mp3': 'mpg321 -v --skip-printing-frames=100 -w "%s/%s" "%s"',
        'flac': 'flac -d -o "%s/%s" "%s"',
        'wav': 'cp -v "%s/%s" "%s"',
        }


    for i, infile in enumerate(args):
        status = 0

        parts = os.path.basename(infile).split('.')
        ext = parts.pop()
        try:
            n = int(parts[0])
            parts.pop(0)
        except ValueError:
            n = 0

        outfile = outstr % {
            'file': '.'.join(parts),
            'n': n,
            'i': i + 1,
            }

        try:
            status = os.system(commands[ext] % 
                tuple([re.sub('"', '\\"', f)
                    for f in (outdir, outfile, infile)]))
        except KeyError:
            print "dumpwav: unknown file type: %s" % infile

        if status != 0:
            print >>sys.stderr, "error: decode command failed"
            sys.exit(status)