#! /usr/bin/env python
# BlinkenArea Stage Director
# Copyright 2013 Stefan Schuermans <stefan@blinkenarea.org>
# Copyleft: GNU public license - http://www.gnu.org/copyleft/gpl.html
# a blinkenarea.org project - https://www.blinkenarea.org/
import re
import pango
import time_fmt
class Playlist:
""" playlist object, reads a playlist form a file and handles the playlist
entries
playlist file format:
- each line is an entry or a stop point: <line> = <entry> | <stop point>
- entries are played one after another
- playing halts at stop points
- <entry> = <name> <whitespace> <duration>
- <stop point> = ""
- <name> = [A-Za-Z0-9_]+
- <duration> = ((<hours>:)?<minutes>:)?<seconds>
- <hours> = [0-9]+
- <minutes> = [0-9]+
- <seconds> = [0-9]+(.[0-9]+)"""
def __init__(self):
"""create a new, empty playlist object"""
self.entries = [] # list of entries
# entry = dictionary { "type": "normal" or "stop"
# "name": string, name of entry
# "durtaion": float, in seconds }
self.reEntry = re.compile("^\s*([A-Za-z0-9_]+)\s+([0-9:.]+)\s*$")
def read(self, filename):
"""read the playlist from filename, replacing the current playlist"""
self.entries = []
f = open(filename, "r")
for line in f:
mEntry = self.reEntry.match(line)
if mEntry:
name = mEntry.group(1)
duration = time_fmt.str2sec(mEntry.group(2))
self.entries.append({"type": "normal",
"name": name,
"duration": duration})
#print("DEBUG playlist entry normal %s %f" %
# (self.entries[-1]["name"], self.entries[-1]["duration"]))
else:
