Internet radio browser GUI for music/video streams from various directory services.

βŒˆβŒ‹ βŽ‡ branch:  streamtuner2


Check-in [c05cee4440]

Overview
Comment:Simplify best_url() dict generation, typecasting, add more comments on channel webpage.
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SHA1:c05cee4440969082d26c08c178fb322117799163
User & Date: mario on 2017-02-13 16:48:52
Other Links: manifest | tags
Context
2017-02-13
16:50
Document channel website behaviour / internal playlist generation urls. Reuse global conf.max_streams (as orientation for no of pages to fetch). check-in: 72806f95a5 user: mario tags: trunk
16:48
Simplify best_url() dict generation, typecasting, add more comments on channel webpage. check-in: c05cee4440 user: mario tags: trunk
16:47
Add version and -V flags. check-in: 39b9182c6e user: mario tags: trunk
Changes

Modified contrib/radiolist.py from [472e976cd7] to [4692e7b068].

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# encoding: UTF-8
# api: streamtuner2
# title: radiolist.net
# description: Station list by continent+country
# url: http://radiolist.net/
# version: 0.1
# type: channel
# category: radio
# priority: extra
# png:
#   iVBORw0KGgoAAAANSUhEUgAAABgAAAAYBAMAAAASWSDLAAAAFVBMVEVKb61qibyDnMegs9S6yeDV4O37/vyx66abAAAAAWJLR0QAiAUdSAAAAAlwSFlzAAALEwAACxMB
#   AJqcGAAAAAd0SU1FB+ECDBAgLJqgZW4AAADoSURBVBjTNdBNj4MgEAbgqdLeZdo9C5NwFmo5Y7Wedauc1y/+/09YdLskkDwJmZl3IOxnON4A8frQhdc/7mG2cv3gx29X
#   rdUfZuVHQ3JHEzZ7GSuNXxFV/FYYwryO6MOiZqEdnQPUC/fsXZaMuxa6MFfOVYN7kIWpHZClyJGLFjbbC617KaRUEJ4r4fU7IqNYrW5f2kgU5gZInG6MZ086eejcyIvO
................................................................................
#
# Radio station list grouped by continents and countries.
# Some categories return no results, because web players are
# filtered out.


import re

import ahttp
from config import *
from channels import *


# radiolist.net



















class radiolist (ChannelPlugin):

    # module attributes
    listformat = "pls"
    has_search = False
    categories = ["Europe", "America", "Canada", "Oceania", "Asia"]
    catmap = {"Europe":"", "America":"world", "Canada":"world/canada", "Oceania":"world/oceania", "Asia":"world/asia"}
................................................................................
    def update_streams(self, cat):
        rx_title = re.compile('<a href="([^">]+)" target="_blank">(.+?)</a>', re.I)
        rx_urls = re.compile('<a href="([^">]+)">(\d+)(?: Kbps)?</a>', re.I)
        rx_genre = re.compile('<td class="cell">([^<]+)</td>', re.I)
        entries = []
        html = ahttp.get("http://www.radiolist.net/" + self.catmap[cat])
        for block in re.findall("<tr>(.+?)</tr>", html, re.S):
            ut = re.findall(rx_title, block)
            uu = re.findall(rx_urls, block)
            lg = re.findall(rx_genre, block)
            print ut, uu, lg
            if ut and uu and lg:
                url, br = self.best_url(uu)
                entries.append(dict(
                    homepage = ut[0][0],
                    title = unhtml(ut[0][1]),
                    url = url,
                    bitrate = br,
                    format = self.guess_fmt(url),
                    listformat = self.guess_pls(url),
                    playing = lg[0],
                    genre = lg[1]
                ))
        # done    

        return entries

    # pick highest rated URL
    def best_url(self, urls):
        r = {}
        for url, br in urls:
            r[url] = to_int(br)
        #print "r=", r
        best = sorted(r, key=r.get, reverse=True)
        #print "best=", best
        return best[0], r[best[0]]

    # see if audio type can be guessed
    def guess_fmt(self, url):
        ext = re.findall("mp3|ogg|wma|asx", url)
        if ext:
            return mime_fmt(ext[0])
        else:
            return "audio/mpeg"

    # guess PLS/M3U from url
    def guess_pls(self, url):
        ext = re.findall("pls|asx|m3u|srv", url)
        if ext:
            return ext[0]
        else:
            return "srv"
    





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# encoding: UTF-8
# api: streamtuner2
# title: radiolist.net
# description: Station list by continent+country
# url: http://radiolist.net/
# version: 0.2
# type: channel
# category: radio
# priority: extra
# png:
#   iVBORw0KGgoAAAANSUhEUgAAABgAAAAYBAMAAAASWSDLAAAAFVBMVEVKb61qibyDnMegs9S6yeDV4O37/vyx66abAAAAAWJLR0QAiAUdSAAAAAlwSFlzAAALEwAACxMB
#   AJqcGAAAAAd0SU1FB+ECDBAgLJqgZW4AAADoSURBVBjTNdBNj4MgEAbgqdLeZdo9C5NwFmo5Y7Wedauc1y/+/09YdLskkDwJmZl3IOxnON4A8frQhdc/7mG2cv3gx29X
#   rdUfZuVHQ3JHEzZ7GSuNXxFV/FYYwryO6MOiZqEdnQPUC/fsXZaMuxa6MFfOVYN7kIWpHZClyJGLFjbbC617KaRUEJ4r4fU7IqNYrW5f2kgU5gZInG6MZ086eejcyIvO
................................................................................
#
# Radio station list grouped by continents and countries.
# Some categories return no results, because web players are
# filtered out.


import re
import action
import ahttp
from config import *
from channels import *


# radiolist.net
#
# Β· Groups stations by continents and countries. Where Europe seems to be the
#   main category (empty "" path), while U.S. is labeled "/world", and Canada
#   and Asia etc. again a subpath "/world/canada" even. The .catmap{} assigns
#   paths to titles.
#
# Β· Playlist formats vary wildly. Therefore this module comes with a guessing
#   method (super crude) of its own.
#
# Β· The audio-format-from-URL guessing should be generalized out of here perhaps.
#
# Β· Each station is in a <tr>…</tr> block. Invidual regexps are used for field
#   extraction afterwards (instead of a block match).
#
# Β· Entries may contain more than one streaming url. Each accompanied by a
#   bitrate. β†’ Therefore the .best_url() sorting method.
#
# Β· Later versions might of course use multi-urls again…
#
class radiolist (ChannelPlugin):

    # module attributes
    listformat = "pls"
    has_search = False
    categories = ["Europe", "America", "Canada", "Oceania", "Asia"]
    catmap = {"Europe":"", "America":"world", "Canada":"world/canada", "Oceania":"world/oceania", "Asia":"world/asia"}
................................................................................
    def update_streams(self, cat):
        rx_title = re.compile('<a href="([^">]+)" target="_blank">(.+?)</a>', re.I)
        rx_urls = re.compile('<a href="([^">]+)">(\d+)(?: Kbps)?</a>', re.I)
        rx_genre = re.compile('<td class="cell">([^<]+)</td>', re.I)
        entries = []
        html = ahttp.get("http://www.radiolist.net/" + self.catmap[cat])
        for block in re.findall("<tr>(.+?)</tr>", html, re.S):
            ut = re.findall(rx_title, block)  # homepage+title
            uu = re.findall(rx_urls, block)   # urls+bitrates
            lg = re.findall(rx_genre, block)  # location+genre
            #print ut, uu, lg
            if ut and uu and lg:
                url, br = self.best_url(uu)
                entries.append(dict(
                    homepage = ut[0][0],
                    title = unhtml(ut[0][1]),
                    url = url,
                    bitrate = br,
                    format = self.guess_fmt(url),
                    listformat = self.guess_pls(url),
                    playing = lg[0],
                    genre = lg[1]
                ))
        # done    
        [log.DATA(e) for e in entries]
        return entries

    # pick highest rated URL from [(url,bitrate),…] tuples
    def best_url(self, urls):

        r = dict([(u, to_int(b)) for u,b in urls])  # {url: bitrate, …}


        best = sorted(r, key=r.get, reverse=True)

        return best[0], r[best[0]]

    # see if audio type can be guessed
    def guess_fmt(self, url):
        ext = re.findall("mp3|ogg|wma|aac|mp4", url)
        if ext:
            return mime_fmt(ext[0])
        else:
            return "audio/mpeg"

    # guess PLS/M3U from url
    def guess_pls(self, url):
        ext = re.findall("|".join(action.playlist_fmt_prio), url)
        if ext:
            return ext[0]
        else:
            return "srv"