#!/usr/bin/env python
#-*- coding:utf-8 -*-

import os, subprocess

def recurse(dir):
    """Recurse in a directory and compile all LilyPond files"""
    os.chdir(dir)
    for item in os.listdir(dir):
        print "Enter directory", dir
        abs_item = os.path.join(dir, item)
        if os.path.isdir(abs_item):
        	   recurse(abs_item)
        else:
            file_name, ext = os.path.splitext(item)
            if ext == '.ly':
                print "Compile file", item
                pr = subprocess.Popen('lilypond ' + abs_item, cwd = dir, 
                              shell = True, 
                              stdout = subprocess.PIPE, 
                              stderr = subprocess.PIPE)
                (out, error) = pr.communicate()
                print out
                print error

def main():
    current_dir = os.getcwd()
    recurse(os.getcwd())
    
if __name__ == "__main__":
    main()