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ytdl.py
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ytdl.py
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import json
import pexpect
import re
import string
import sys
import requests
import os
from hashlib import sha256
from threading import Thread
from time import sleep
from vtt_to_srt import vtts_to_srt
# ***************************************
# YTDL CLASS
# ***************************************
class Ytdl:
"""
interface for youtube-dl
"""
_YTLOCATION = ''
_YTLAUNCH_CMD = ''
_YTLAUNCH_ARGS_FORMAT = ' -j -f %s --youtube-skip-dash-manifest "%s"'
_YTLAUNCH_PLST_CMD = ''
_YTLAUNCH_PLST_ARGS_FORMAT = ' -J -f %s --youtube-skip-dash-manifest "%s"'
_YTLAUNCH_SUB_DIR = '/dev/shm/tbopsubs'
_YTLAUNCH_SUBT_ARGS_FORMAT = ' --write-sub --sub-lang %s --skip-download "%s" --output %s/subtitle'
_YTLAUNCH_AUTOSUBT_ARGS_FORMAT = ' --write-auto-sub --sub-lang %s --skip-download "%s" --output %s/subtitle'
_FINISHED_STATUS = "\n"
_WRN_STATUS = ".*WARNING:.*"
_UPDATED_STATUS = ".*Restart youtube-dl to use the new version.*"
_ERR_STATUS = ".*ERROR:.*"
_SUDO_STATUS = ".*\[sudo\].*"
_NO_SUB_STATUS = ".*WARNING: video doesn't have subtitles.*"
_FOUND_SUB_STATUS = ".*\[info\] Writing video subtitles to:.*"
_SERVICES_REGEXPS = ()
_ACCEPTED_LINK_REXP_FORMAT = "(http[s]{0,1}://(?:\w|\.{0,1})+%s\.(?:[a-z]{2,3})(?:\.[a-z]{2,3}){0,1}/)"
_running_processes = {}
finished_processes = {}
MSGS = (0,1,2)
start_signal = False
end_signal = False
updated_signal = False
updating_signal = False
update_failed_signal = False
password_requested_signal = False
has_password_signal = False
downloading_subtitle_signal = False
downloaded_subtitle_signal = False
downloaded_partial_subtitle_signal = False
download_subtitle_failed_signal = False
subtitle_ready_signal = False
_sudo_password = ''
def __init__(self, options, yt_not_found_callback):
os.system("mount > /dev/null")
try:
os.mkdir(self._YTLAUNCH_SUB_DIR)
except:
pass
self.set_options(options)
self.yt_not_found_callback = yt_not_found_callback
self.compile_regexps()
def compile_regexps(self, updated=False):
Thread(target=self._compile_regexps,args=[updated]).start()
def _compile_regexps(self, updated=False):
if not os.path.isfile(self._YTLOCATION): return
self._SERVICES_REGEXPS = ()
extractors_f = os.path.expanduser("~") + "/.tboplayer/ytdl_extractors"
if not os.path.isfile(extractors_f) or updated:
os.system(self._YTLOCATION + " --list-extractors > " + extractors_f)
f = open(extractors_f, "r")
extractors = f.read().split("\n")
f.close()
supported_service_re = re.compile("^[\w\d.]+$")
supported_services = ()
for e in extractors:
if supported_service_re.match(e) != None:
supported_services = supported_services + (e.lower(),)
for s in list(sorted(supported_services, reverse=True)):
if "." in s:
self._SERVICES_REGEXPS = self._SERVICES_REGEXPS + (re.compile(s),)
else:
self._SERVICES_REGEXPS = self._SERVICES_REGEXPS + (re.compile(self._ACCEPTED_LINK_REXP_FORMAT % (s)),)
def _response(self, url):
process = self._running_processes[url][0]
if self._terminate_sent_signal:
r = (-2, '')
else:
data = process.before
if self._WRN_STATUS in data:
# warning message
r = (0, self.MSGS[0])
elif self._ERR_STATUS in data:
# error message
r = (-1, self.MSGS[1])
else:
r = (1, data)
self.finished_processes[url] = self._running_processes[url]
self.finished_processes[url][1] = r
del self._running_processes[url]
def _get_link_media_format(self, url, f):
return "m4a" if (f == "m4a" and "youtube." in url) else "mp4"
def _background_process(self, url):
process = self._running_processes[url][0]
while self.is_running(url):
try:
index = process.expect([self._FINISHED_STATUS,
pexpect.TIMEOUT,
pexpect.EOF])
if index == 1: continue
elif index == 2:
del self._running_processes[url]
break
else:
self._response(url)
break
except Exception:
del self._running_processes[url]
break
sleep(1)
def _spawn_thread(self, url):
self._terminate_sent_signal = False
Thread(target=self._background_process, args=[url]).start()
def retrieve_media_url(self, url, f):
if self.is_running(url): return
ytcmd = self._YTLAUNCH_CMD % (self._get_link_media_format(url, f), url)
process = pexpect.spawn(ytcmd)
self._running_processes[url] = [process, ''] # process, result
self._spawn_thread(url)
def retrieve_youtube_playlist(self, url, f):
if self.is_running(url): return
ytcmd = self._YTLAUNCH_PLST_CMD % (f, url)
process = pexpect.spawn(ytcmd, timeout=180, maxread=50000, searchwindowsize=50000)
self._running_processes[url] = [process, '']
self._spawn_thread(url)
def whether_to_use_youtube_dl(self, url):
to_use = url[:4] == "http" and any(regxp.match(url) for regxp in self._SERVICES_REGEXPS)
if to_use and not os.path.isfile(self._YTLOCATION):
self.yt_not_found_callback()
return False
return to_use
def is_running(self, url = None):
if url and not url in self._running_processes:
return False
elif not url:
return bool(len(self._running_processes))
process = self._running_processes[url][0]
return process is not None and process.isalive()
def set_options(self, options):
self._YTLOCATION=options.ytdl_location
self._YTLAUNCH_CMD=self._YTLOCATION + self._YTLAUNCH_ARGS_FORMAT
self._YTLAUNCH_PLST_CMD=self._YTLOCATION + self._YTLAUNCH_PLST_ARGS_FORMAT
def set_password(self, password):
self._sudo_password = password
self.has_password_signal = True
def quit(self):
self._terminate_sent_signal = True
try:
for url in self._running_processes:
self._running_processes[url][0].terminate(force=True)
except:
return
def download_subtitles(self, lang, url):
self.downloaded_subtitle_signal = False
self.download_subtitle_failed_signal = False
self.subtitle_ready_signal = False
self.downloaded_partial_subtitle_signal = False
if not os.path.isfile(self._YTLOCATION):
self.download_subtitle_failed_signal = True
return
ytcmd = self._YTLOCATION + ((self._YTLAUNCH_SUBT_ARGS_FORMAT) % (lang, url, self._YTLAUNCH_SUB_DIR))
self._subtitled_process = pexpect.spawn(ytcmd)
self.downloading_subtitle_signal = True
Thread(target=self._download_subtitles,args=[lang, url]).start()
def _download_subtitles(self, lang, url, trying = 1):
while self.downloading_subtitle_signal:
try:
index = self._subtitled_process.expect([self._FOUND_SUB_STATUS,
pexpect.EOF,
self._NO_SUB_STATUS,
pexpect.TIMEOUT])
if index == 0:
self.downloaded_partial_subtitle_signal = True
elif index == 1:
if self.downloaded_partial_subtitle_signal:
self.downloaded_subtitle_signal = True
else:
self.download_subtitle_failed_signal = True
self.downloading_subtitle_signal = False
break
elif index in (2,3):
self.downloading_subtitle_signal = False
if trying == 2:
self.download_subtitle_failed_signal = True
break
sleep(0.2)
except Exception, e:
print e
self.download_subtitle_failed_signal = True
self.downloading_subtitle_signal = False
return
if trying == 1 and not self.downloaded_subtitle_signal:
self.downloading_subtitle_signal = True
ytcmd = self._YTLOCATION + ((self._YTLAUNCH_AUTOSUBT_ARGS_FORMAT) % (lang, url, self._YTLAUNCH_SUB_DIR))
self._subtitled_process = pexpect.spawn(ytcmd)
self._download_subtitles(lang, url, trying = 2)
if self.downloaded_subtitle_signal:
vtts_to_srt(self._YTLAUNCH_SUB_DIR, rec = False)
os.remove(self._YTLAUNCH_SUB_DIR + "/subtitle." + lang + ".vtt")
self.subtitle_ready_signal = True
def check_for_update(self):
if not os.path.isfile(self._YTLOCATION):
return
self.updating_signal = True
Thread(target=self._check_for_update,args=[]).start()
def _check_for_update(self):
try:
versionsurl = "http://rg3.github.io/youtube-dl/update/versions.json"
versions = json.loads(requests.get(versionsurl).text)
except Exception, e:
print e
self.updating_signal = False
return
current_version_hash = sha256(open(self._YTLOCATION, 'rb').read()).hexdigest()
latest_version_hash = versions['versions'][versions['latest']]['bin'][1]
if current_version_hash != latest_version_hash:
self._update_process = pexpect.spawn("sudo %s -U" % self._YTLOCATION, timeout=60)
while self.updating_signal:
try:
index = self._update_process.expect([self._UPDATED_STATUS,
self._SUDO_STATUS,
self._ERR_STATUS,
pexpect.EOF,
pexpect.TIMEOUT])
if index == 0:
self.updating_signal = False
self.updated_signal = True
break
elif index in (2,3,4):
self.update_failed_signal = True
self.updating_signal = False
break
elif index == 1:
if self._sudo_password:
self.password_requested_signal = False
self._update_process.sendline(self._sudo_password)
self._sudo_password = ''
elif self._sudo_password == None:
self.password_requested_signal = False
self.updating_signal = False
self._sudo_password = False
self._update_process.terminate(force=True)
break
elif not self.has_password_signal:
self.password_requested_signal = True
except Exception, e:
print e
break
sleep(0.5)
if self.updated_signal:
self.compile_regexps(updated=True)
self.updating_signal = False
def reset_processes(self):
self._running_processes = {}
self.finished_processes = {}
def reset_subtitle_attributes(self):
self.downloading_subtitle_signal = False
self.downloaded_subtitle_signal = False
self.downloaded_partial_subtitle_signal = False
self.download_subtitle_failed_signal = False
self.subtitle_ready_signal = False