97 lines
2.8 KiB
Python
97 lines
2.8 KiB
Python
#!/usr/bin/env python2
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# -*- coding: utf-8 -*-
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"""Youtubedlg module to update youtube-dl binary.
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Attributes:
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UPDATE_PUB_TOPIC (string): wxPublisher subscription topic of the
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UpdateThread thread.
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"""
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from __future__ import unicode_literals
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import os.path
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from threading import Thread
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from urllib2 import urlopen, URLError, HTTPError
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from wx import CallAfter
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from wx.lib.pubsub import setuparg1
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from wx.lib.pubsub import pub as Publisher
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from .utils import (
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YOUTUBEDL_BIN,
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check_path
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)
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UPDATE_PUB_TOPIC = 'update'
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class UpdateThread(Thread):
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"""Python Thread that downloads youtube-dl binary.
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Attributes:
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LATEST_YOUTUBE_DL (string): URL with the latest youtube-dl binary.
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DOWNLOAD_TIMEOUT (int): Download timeout in seconds.
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Args:
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download_path (string): Absolute path where UpdateThread will download
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the latest youtube-dl.
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quiet (boolean): If True UpdateThread won't send the finish signal
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back to the caller. Finish signal can be used to make sure that
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the UpdateThread has been completed in an asynchronous way.
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"""
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LATEST_YOUTUBE_DL = 'https://yt-dl.org/latest/'
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DOWNLOAD_TIMEOUT = 10
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def __init__(self, download_path, quiet=False):
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super(UpdateThread, self).__init__()
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self.download_path = download_path
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self.quiet = quiet
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self.start()
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def run(self):
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self._talk_to_gui('download')
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source_file = self.LATEST_YOUTUBE_DL + YOUTUBEDL_BIN
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destination_file = os.path.join(self.download_path, YOUTUBEDL_BIN)
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check_path(self.download_path)
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try:
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stream = urlopen(source_file, timeout=self.DOWNLOAD_TIMEOUT)
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with open(destination_file, 'wb') as dest_file:
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dest_file.write(stream.read())
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self._talk_to_gui('correct')
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except (HTTPError, URLError, IOError) as error:
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self._talk_to_gui('error', unicode(error))
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if not self.quiet:
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self._talk_to_gui('finish')
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def _talk_to_gui(self, signal, data=None):
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"""Communicate with the GUI using wxCallAfter and wxPublisher.
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Args:
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signal (string): Unique signal string that informs the GUI for the
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update process.
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data (string): Can be any string data to pass along with the
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given signal. Default is None.
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Note:
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UpdateThread supports 4 signals.
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1) download: The update process started
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2) correct: The update process completed successfully
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3) error: An error occured while downloading youtube-dl binary
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4) finish: The update thread is ready to join
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"""
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CallAfter(Publisher.sendMessage, UPDATE_PUB_TOPIC, (signal, data))
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