File channels/ubuntuusers.py artifact d59a32fd62 part of check-in 1c2efe11f1

# encoding: UTF-8
# api: streamtuner2
# title: UbuntuUsers
# description: Static list of radio stations courtesy of the UbuntuUsers.de Wiki
# version: 0.1
# type: channel
# category: radio
# url: http://wiki.ubuntuusers.de/Internetradio/Stationen
# png:
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# config: -
# priority: extra
#
# Short user-collected list of internet radio stations
# on UbuntuUsers.de wiki. Only provides a single category,
# but stations are grouped by country already.
#


import re
from config import *
from channels import *
import ahttp
import itertools


# UU Wiki radio list
class ubuntuusers (ChannelPlugin):

    # description
    has_search = False
    listformat = "srv"
    titles = dict(playing=False, listeners=False, bitrate=False)
    base = {
       "stations": "http://wiki.ubuntuusers.de/Internetradio/Stationen?action=export&format=raw",
       "tv": "http://wiki.ubuntuusers.de/Internet-TV/Stationen?action=export&format=raw",
    }
    categories = ["stations", "tv"]


    # Nope
    def update_categories(self):
        pass


    # Fetches wiki page, extracts from raw markup.
    # Which has a coherent formatting of entries like:
    #
    #   == Pi-Radio (Berlin) ==
    #   [http://www.piradio.de] {de}
    #   {{{
    #   http://ice.rosebud-media.de:8000/88vier-ogg1.ogg
    #   }}}
    #
    def update_streams(self, cat, search=None):

        # fetch page
        wiki = ahttp.get(self.base[cat])
        f = "audio/mpeg" if cat == "stations" else "video/mp4"
        
        # split on headlines
        r = []
        for src in re.split("^==+", wiki, 0, re.M):
            r += self.join(src, f)
        return r


    # Extract individual stations
    def join(self, src, f):
    
        # regexp lists out, just one srv url per entry
        ls = re.findall(r"""
           ^\s*([\w\s.-]+)\s*==+\s+
           (?: ^\[(http[^\s\]]+) .*? \{(\w+)\} )?
           .*?
           ^\{\{\{
           .*?
           (\w+://[^"'\s]+)
        """, src, re.X|re.S|re.M)
        
        # pack into row list
        return [
           dict(genre=g, title=t, url=u, homepage=h, bitrate=0, listeners=0, format=f, listformat="href")
           for t,h,g,u in ls
        ]