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# -*- coding: utf-8 -*-
#
# gPodder - A media aggregator and podcast client
# Copyright (c) 2005-2018 The gPodder Team
# Copyright (c) 2011 Neal H. Walfield
#
# gPodder is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# gPodder is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#
# gpodder.model - Core model classes for gPodder (2009-08-13)
# Based on libpodcasts.py (thp, 2005-10-29)
#
import collections
import datetime
import glob
import hashlib
import logging
import os
import re
import shutil
import string
import time
import gpodder
import podcastparser
from gpodder import (coverart, escapist_videos, feedcore, schema, util, vimeo,
youtube)
logger = logging.getLogger(__name__)
_ = gpodder.gettext
class Feed:
""" abstract class for presenting a parsed feed to PodcastChannel """
def get_title(self):
""" :return str: the feed's title """
return None
def get_link(self):
""" :return str: link to the feed's website """
return None
def get_description(self):
""" :return str: feed's textual description """
return None
def get_cover_url(self):
""" :return str: url of the feed's cover image """
return None
def get_payment_url(self):
""" :return str: optional -- feed's payment url """
return None
def get_http_etag(self):
""" :return str: optional -- last HTTP etag header, for conditional request next time """
return None
def get_http_last_modified(self):
""" :return str: optional -- last HTTP Last-Modified header, for conditional request next time """
return None
def get_new_episodes(self, channel, existing_guids):
"""
Produce new episodes and update old ones.
Feed is a class to present results, so the feed shall have already been fetched.
Existing episodes not in all_seen_guids will be purged from the database.
:param PodcastChannel channel: the updated channel
:param dict(str, PodcastEpisode): existing episodes, by guid
:return (list(PodcastEpisode), set(str)): new_episodes, all_seen_guids
"""
return ([], set())
def get_next_page(self, channel, max_episodes):
"""
Paginated feed support (RFC 5005).
If the feed is paged, return the next feed page.
Returned page will in turn be asked for the next page, until None is returned.
:return feedcore.Result: the next feed's page,
as a fully parsed Feed or None
"""
return None
class PodcastParserFeed(Feed):
def __init__(self, feed, fetcher, max_episodes=0):
self.feed = feed
self.fetcher = fetcher
self.max_episodes = max_episodes
def get_title(self):
return self.feed.get('title')
def get_link(self):
return self.feed.get('link')
def get_description(self):
return self.feed.get('description')
def get_cover_url(self):
return self.feed.get('cover_url')
def get_payment_url(self):
return self.feed.get('payment_url')
def get_http_etag(self):
return self.feed.get('headers', {}).get('etag')
def get_http_last_modified(self):
return self.feed.get('headers', {}).get('last-modified')
def get_new_episodes(self, channel, existing_guids):
# Keep track of episode GUIDs currently seen in the feed
seen_guids = set()
# list of new episodes
new_episodes = []
# We have to sort the entries in descending chronological order,
# because if the feed lists items in ascending order and has >
# max_episodes old episodes, new episodes will not be shown.
# See also: gPodder Bug 1186
entries = sorted(self.feed.get('episodes', []), key=lambda episode: episode['published'], reverse=True)
# We can limit the maximum number of entries that gPodder will parse
if self.max_episodes > 0 and len(entries) > self.max_episodes:
entries = entries[:self.max_episodes]
# Search all entries for new episodes
for entry in entries:
episode = channel.EpisodeClass.from_podcastparser_entry(entry, channel)
if episode is None:
continue
seen_guids.add(episode.guid)
# Detect (and update) existing episode based on GUIDs
existing_episode = existing_guids.get(episode.guid, None)
if existing_episode:
existing_episode.update_from(episode)
existing_episode.save()
continue
episode.save()
new_episodes.append(episode)
return new_episodes, seen_guids
def get_next_page(self, channel, max_episodes):
if 'paged_feed_next' in self.feed:
url = self.feed['paged_feed_next']
logger.debug("get_next_page: feed has next %s", url)
url = channel.authenticate_url(url)
res = self.fetcher.fetch(url, max_episodes=max_episodes)
if res.status == feedcore.UPDATED_FEED:
res.feed = PodcastParserFeed(res.feed, self.fetcher, max_episodes)
return res
return None
class gPodderFetcher(feedcore.Fetcher):
"""
This class extends the feedcore Fetcher with the gPodder User-Agent and the
Proxy handler based on the current settings in gPodder.
"""
custom_handlers = []
def fetch_channel(self, channel, max_episodes):
for handler in self.custom_handlers:
custom_feed = handler.fetch_channel(channel, max_episodes)
if custom_feed is not None:
return custom_feed
# If we have a username or password, rebuild the url with them included
# Note: using a HTTPBasicAuthHandler would be pain because we need to
# know the realm. It can be done, but I think this method works, too
url = channel.authenticate_url(channel.url)
res = self.fetch(url, channel.http_etag, channel.http_last_modified, max_episodes)
if res.status == feedcore.UPDATED_FEED:
res.feed = PodcastParserFeed(res.feed, self, max_episodes)
return res
def _resolve_url(self, url):
url = youtube.get_real_channel_url(url)
url = vimeo.get_real_channel_url(url)
url = escapist_videos.get_real_channel_url(url)
return url
@classmethod
def register(cls, handler):
cls.custom_handlers.append(handler)
@classmethod
def unregister(cls, handler):
cls.custom_handlers.remove(handler)
# The "register" method is exposed here for external usage
register_custom_handler = gPodderFetcher.register
# The "unregister" method is exposed here for external usage
unregister_custom_handler = gPodderFetcher.unregister
# Our podcast model:
#
# database -> podcast -> episode -> download/playback
# podcast.parent == db
# podcast.children == [episode, ...]
# episode.parent == podcast
#
# - normally: episode.children = (None, None)
# - downloading: episode.children = (DownloadTask(), None)
# - playback: episode.children = (None, PlaybackTask())
class PodcastModelObject(object):
"""
A generic base class for our podcast model providing common helper
and utility functions.
"""
__slots__ = ('id', 'parent', 'children')
@classmethod
def create_from_dict(cls, d, *args):
"""
Create a new object, passing "args" to the constructor
and then updating the object with the values from "d".
"""
o = cls(*args)
# XXX: all(map(lambda k: hasattr(o, k), d))?
for k, v in d.items():
setattr(o, k, v)
return o
class PodcastEpisode(PodcastModelObject):
"""holds data for one object in a channel"""
# In theory, Linux can have 255 bytes (not characters!) in a filename, but
# filesystems like eCryptFS store metadata in the filename, making the
# effective number of characters less than that. eCryptFS recommends
# 140 chars, we use 120 here (140 - len(extension) - len(".partial")).
# References: gPodder bug 1898, http://unix.stackexchange.com/a/32834
MAX_FILENAME_LENGTH = 120 # without extension
MAX_FILENAME_WITH_EXT_LENGTH = 140 - len(".partial") # with extension
__slots__ = schema.EpisodeColumns
def _deprecated(self):
raise Exception('Property is deprecated!')
is_played = property(fget=_deprecated, fset=_deprecated)
is_locked = property(fget=_deprecated, fset=_deprecated)
def has_website_link(self):
return bool(self.link) and (self.link != self.url or
youtube.is_video_link(self.link))
@classmethod
def from_podcastparser_entry(cls, entry, channel):
episode = cls(channel)
episode.guid = entry['guid']
episode.title = entry['title']
episode.link = entry['link']
episode.description = entry['description']
if entry.get('description_html'):
episode.description_html = entry['description_html']
episode.total_time = entry['total_time']
episode.published = entry['published']
episode.payment_url = entry['payment_url']
audio_available = any(enclosure['mime_type'].startswith('audio/') for enclosure in entry['enclosures'])
video_available = any(enclosure['mime_type'].startswith('video/') for enclosure in entry['enclosures'])
for enclosure in entry['enclosures']:
episode.mime_type = enclosure['mime_type']
# Skip images in feeds if audio or video is available (bug 979)
# This must (and does) also look in Media RSS enclosures (bug 1430)
if episode.mime_type.startswith('image/') and (audio_available or video_available):
continue
# If we have audio or video available later on, skip
# 'application/octet-stream' data types (fixes Linux Outlaws)
if episode.mime_type == 'application/octet-stream' and (audio_available or video_available):
continue
episode.url = util.normalize_feed_url(enclosure['url'])
if not episode.url:
continue
episode.file_size = enclosure['file_size']
return episode
# Brute-force detection of the episode link
episode.url = util.normalize_feed_url(entry['link'])
if not episode.url:
return None
if any(mod.is_video_link(episode.url) for mod in (youtube, vimeo, escapist_videos)):
return episode
# Check if we can resolve this link to a audio/video file
filename, extension = util.filename_from_url(episode.url)
file_type = util.file_type_by_extension(extension)
# The link points to a audio or video file - use it!
if file_type is not None:
return episode
return None
def __init__(self, channel):
self.parent = channel
self.podcast_id = self.parent.id
self.children = (None, None)
self.id = None
self.url = ''
self.title = ''
self.file_size = 0
self.mime_type = 'application/octet-stream'
self.guid = ''
self.description = ''
self.description_html = ''
self.link = ''
self.published = 0
self.download_filename = None
self.payment_url = None
self.state = gpodder.STATE_NORMAL
self.is_new = True
self.archive = channel.auto_archive_episodes
# Time attributes
self.total_time = 0
self.current_position = 0
self.current_position_updated = 0
# Timestamp of last playback time
self.last_playback = 0
@property
def channel(self):
return self.parent
@property
def db(self):
return self.parent.parent.db
@property
def trimmed_title(self):
"""Return the title with the common prefix trimmed"""
# Minimum amount of leftover characters after trimming. This
# avoids things like "Common prefix 123" to become just "123".
# If there are LEFTOVER_MIN or less characters after trimming,
# the original title will be returned without trimming.
LEFTOVER_MIN = 5
# "Podcast Name - Title" and "Podcast Name: Title" -> "Title"
for postfix in (' - ', ': '):
prefix = self.parent.title + postfix
if (self.title.startswith(prefix) and
len(self.title) - len(prefix) > LEFTOVER_MIN):
return self.title[len(prefix):]
regex_patterns = [
# "Podcast Name <number>: ..." -> "<number>: ..."
r'^%s (\d+: .*)' % re.escape(self.parent.title),
# "Episode <number>: ..." -> "<number>: ..."
r'Episode (\d+:.*)',
]
for pattern in regex_patterns:
if re.match(pattern, self.title):
title = re.sub(pattern, r'\1', self.title)
if len(title) > LEFTOVER_MIN:
return title
# "#001: Title" -> "001: Title"
if (
not self.parent._common_prefix and
re.match('^#\d+: ', self.title) and
len(self.title) - 1 > LEFTOVER_MIN):
return self.title[1:]
if (self.parent._common_prefix is not None and
self.title.startswith(self.parent._common_prefix) and
len(self.title) - len(self.parent._common_prefix) > LEFTOVER_MIN):
return self.title[len(self.parent._common_prefix):]
return self.title
def _set_download_task(self, download_task):
self.children = (download_task, self.children[1])
def _get_download_task(self):
return self.children[0]
download_task = property(_get_download_task, _set_download_task)
@property
def downloading(self):
task = self.download_task
if task is None:
return False
return task.status in (task.DOWNLOADING, task.QUEUED, task.PAUSED)
def check_is_new(self):
return (self.state == gpodder.STATE_NORMAL and self.is_new and
not self.downloading)
def save(self):
gpodder.user_extensions.on_episode_save(self)
self.db.save_episode(self)
def on_downloaded(self, filename):
self.state = gpodder.STATE_DOWNLOADED
self.is_new = True
self.file_size = os.path.getsize(filename)
self.save()
def set_state(self, state):
self.state = state
self.save()
def playback_mark(self):
self.is_new = False
self.last_playback = int(time.time())
gpodder.user_extensions.on_episode_playback(self)
self.save()
def mark(self, state=None, is_played=None, is_locked=None):
if state is not None:
self.state = state
if is_played is not None:
self.is_new = not is_played
# "Mark as new" must "undelete" the episode
if self.is_new and self.state == gpodder.STATE_DELETED:
self.state = gpodder.STATE_NORMAL
if is_locked is not None:
self.archive = is_locked
self.save()
def age_in_days(self):
return util.file_age_in_days(self.local_filename(create=False,
check_only=True))
age_int_prop = property(fget=age_in_days)
def get_age_string(self):
return util.file_age_to_string(self.age_in_days())
age_prop = property(fget=get_age_string)
def one_line_description(self):
MAX_LINE_LENGTH = 120
desc = util.remove_html_tags(self.description or '')
desc = re.sub('\s+', ' ', desc).strip()
if not desc:
return _('No description available')
else:
# Decode the description to avoid gPodder bug 1277
desc = util.convert_bytes(desc).strip()
if len(desc) > MAX_LINE_LENGTH:
return desc[:MAX_LINE_LENGTH] + '...'
else:
return desc
def delete_from_disk(self):
filename = self.local_filename(create=False, check_only=True)
if filename is not None:
gpodder.user_extensions.on_episode_delete(self, filename)
util.delete_file(filename)
self.set_state(gpodder.STATE_DELETED)
def get_playback_url(self, fmt_ids=None, vimeo_fmt=None, allow_partial=False):
"""Local (or remote) playback/streaming filename/URL
Returns either the local filename or a streaming URL that
can be used to playback this episode.
Also returns the filename of a partially downloaded file
in case partial (preview) playback is desired.
"""
url = self.local_filename(create=False)
if (allow_partial and url is not None and
os.path.exists(url + '.partial')):
return url + '.partial'
if url is None or not os.path.exists(url):
url = self.url
url = youtube.get_real_download_url(url, fmt_ids)
url = vimeo.get_real_download_url(url, vimeo_fmt)
url = escapist_videos.get_real_download_url(url)
return url
def find_unique_file_name(self, filename, extension):
# Remove leading and trailing whitespace + dots (to avoid hidden files)
filename = filename.strip('.' + string.whitespace) + extension
for name in util.generate_names(filename):
if (not self.db.episode_filename_exists(self.podcast_id, name) or
self.download_filename == name):
return name
def local_filename(self, create, force_update=False, check_only=False,
template=None, return_wanted_filename=False):
"""Get (and possibly generate) the local saving filename
Pass create=True if you want this function to generate a
new filename if none exists. You only want to do this when
planning to create/download the file after calling this function.
Normally, you should pass create=False. This will only
create a filename when the file already exists from a previous
version of gPodder (where we used md5 filenames). If the file
does not exist (and the filename also does not exist), this
function will return None.
If you pass force_update=True to this function, it will try to
find a new (better) filename and move the current file if this
is the case. This is useful if (during the download) you get
more information about the file, e.g. the mimetype and you want
to include this information in the file name generation process.
If check_only=True is passed to this function, it will never try
to rename the file, even if would be a good idea. Use this if you
only want to check if a file exists.
If "template" is specified, it should be a filename that is to
be used as a template for generating the "real" filename.
The generated filename is stored in the database for future access.
If return_wanted_filename is True, the filename will not be written to
the database, but simply returned by this function (for use by the
"import external downloads" feature).
"""
if self.download_filename is None and (check_only or not create):
return None
ext = self.extension(may_call_local_filename=False)
if not check_only and (force_update or not self.download_filename):
# Avoid and catch gPodder bug 1440 and similar situations
if template == '':
logger.warn('Empty template. Report this podcast URL %s',
self.channel.url)
template = None
# Try to find a new filename for the current file
if template is not None:
# If template is specified, trust the template's extension
episode_filename, ext = os.path.splitext(template)
else:
episode_filename, _ = util.filename_from_url(self.url)
if 'redirect' in episode_filename and template is None:
# This looks like a redirection URL - force URL resolving!
logger.warn('Looks like a redirection to me: %s', self.url)
url = util.get_real_url(self.channel.authenticate_url(self.url))
logger.info('Redirection resolved to: %s', url)
episode_filename, _ = util.filename_from_url(url)
# Use title for YouTube, Vimeo and Soundcloud downloads
if (youtube.is_video_link(self.url) or
vimeo.is_video_link(self.url) or
escapist_videos.is_video_link(self.url) or
episode_filename == 'stream'):
episode_filename = self.title
# If the basename is empty, use the md5 hexdigest of the URL
if not episode_filename or episode_filename.startswith('redirect.'):
logger.error('Report this feed: Podcast %s, episode %s',
self.channel.url, self.url)
episode_filename = hashlib.md5(self.url.encode('utf-8')).hexdigest()
# Also sanitize ext (see #591 where ext=.mp3?dest-id=754182)
fn_template, ext = util.sanitize_filename_ext(
episode_filename,
ext,
self.MAX_FILENAME_LENGTH,
self.MAX_FILENAME_WITH_EXT_LENGTH)
# Find a unique filename for this episode
wanted_filename = self.find_unique_file_name(fn_template, ext)
if return_wanted_filename:
# return the calculated filename without updating the database
return wanted_filename
# The old file exists, but we have decided to want a different filename
if self.download_filename and wanted_filename != self.download_filename:
# there might be an old download folder crawling around - move it!
new_file_name = os.path.join(self.channel.save_dir, wanted_filename)
old_file_name = os.path.join(self.channel.save_dir, self.download_filename)
if os.path.exists(old_file_name) and not os.path.exists(new_file_name):
logger.info('Renaming %s => %s', old_file_name, new_file_name)
os.rename(old_file_name, new_file_name)
elif force_update and not os.path.exists(old_file_name):
# When we call force_update, the file might not yet exist when we
# call it from the downloading code before saving the file
logger.info('Choosing new filename: %s', new_file_name)
else:
logger.warn('%s exists or %s does not', new_file_name, old_file_name)
logger.info('Updating filename of %s to "%s".', self.url, wanted_filename)
elif self.download_filename is None:
logger.info('Setting download filename: %s', wanted_filename)
self.download_filename = wanted_filename
self.save()
if return_wanted_filename:
# return the filename, not full path
return self.download_filename
return os.path.join(self.channel.save_dir, self.download_filename)
def extension(self, may_call_local_filename=True):
filename, ext = util.filename_from_url(self.url)
if may_call_local_filename:
filename = self.local_filename(create=False)
if filename is not None:
filename, ext = os.path.splitext(filename)
# if we can't detect the extension from the url fallback on the mimetype
if ext == '' or util.file_type_by_extension(ext) is None:
ext = util.extension_from_mimetype(self.mime_type)
return ext
def mark_new(self):
self.is_new = True
self.save()
def mark_old(self):
self.is_new = False
self.save()
def file_exists(self):
filename = self.local_filename(create=False, check_only=True)
if filename is None:
return False
else:
return os.path.exists(filename)
def was_downloaded(self, and_exists=False):
if self.state != gpodder.STATE_DOWNLOADED:
return False
if and_exists and not self.file_exists():
return False
return True
def sync_filename(self, use_custom=False, custom_format=None):
if use_custom:
return util.object_string_formatter(custom_format,
episode=self, podcast=self.channel)
else:
return self.title
def file_type(self):
# Assume all YouTube/Vimeo links are video files
if youtube.is_video_link(self.url) or vimeo.is_video_link(self.url) or escapist_videos.is_video_link(self.url):
return 'video'
return util.file_type_by_extension(self.extension())
@property
def basename(self):
return os.path.splitext(os.path.basename(self.url))[0]
@property
def pubtime(self):
"""
Returns published time as HHMM (or 0000 if not available)
"""
try:
return datetime.datetime.fromtimestamp(self.published).strftime('%H%M')
except:
logger.warn('Cannot format pubtime: %s', self.title, exc_info=True)
return '0000'
def playlist_title(self):
"""Return a title for this episode in a playlist
The title will be composed of the podcast name, the
episode name and the publication date. The return
value is the canonical representation of this episode
in playlists (for example, M3U playlists).
"""
return '%s - %s (%s)' % (self.channel.title,
self.title,
self.cute_pubdate())
def cute_pubdate(self):
result = util.format_date(self.published)
if result is None:
return '(%s)' % _('unknown')
else:
return result
pubdate_prop = property(fget=cute_pubdate)
def published_datetime(self):
return datetime.datetime.fromtimestamp(self.published)
@property
def sortdate(self):
return self.published_datetime().strftime('%Y-%m-%d')
@property
def pubdate_day(self):
return self.published_datetime().strftime('%d')
@property
def pubdate_month(self):
return self.published_datetime().strftime('%m')
@property
def pubdate_year(self):
return self.published_datetime().strftime('%y')
def is_finished(self):
"""Return True if this episode is considered "finished playing"
An episode is considered "finished" when there is a
current position mark on the track, and when the
current position is greater than 99 percent of the
total time or inside the last 10 seconds of a track.
"""
return (self.current_position > 0 and self.total_time > 0 and
(self.current_position + 10 >= self.total_time or
self.current_position >= self.total_time * .99))
def get_play_info_string(self, duration_only=False):
duration = util.format_time(self.total_time)
if duration_only and self.total_time > 0:
return duration
elif self.is_finished():
return '%s (%s)' % (_('Finished'), duration)
elif self.current_position > 0 and \
self.current_position != self.total_time:
position = util.format_time(self.current_position)
return '%s / %s' % (position, duration)
elif self.total_time > 0:
return duration
else:
return '-'
def update_from(self, episode):
for k in ('title', 'url', 'description', 'description_html', 'link', 'published', 'guid', 'payment_url'):
setattr(self, k, getattr(episode, k))
# Don't overwrite file size on downloaded episodes
# See #648 refreshing a youtube podcast clears downloaded file size
if self.state != gpodder.STATE_DOWNLOADED:
setattr(self, 'file_size', getattr(episode, 'file_size'))
class PodcastChannel(PodcastModelObject):
__slots__ = schema.PodcastColumns + ('_common_prefix',)
UNICODE_TRANSLATE = {ord('ö'): 'o', ord('ä'): 'a', ord('ü'): 'u'}
# Enumerations for download strategy
STRATEGY_DEFAULT, STRATEGY_LATEST = list(range(2))
# Description and ordering of strategies
STRATEGIES = [
(STRATEGY_DEFAULT, _('Default')),
(STRATEGY_LATEST, _('Only keep latest')),
]
MAX_FOLDERNAME_LENGTH = 60
SECONDS_PER_DAY = 24 * 60 * 60
SECONDS_PER_WEEK = 7 * 24 * 60 * 60
EpisodeClass = PodcastEpisode
feed_fetcher = gPodderFetcher()
def __init__(self, model, id=None):
self.parent = model
self.children = []
self.id = id
self.url = None
self.title = ''
self.link = ''
self.description = ''
self.cover_url = None
self.payment_url = None
self.auth_username = ''
self.auth_password = ''
self.http_last_modified = None
self.http_etag = None
self.auto_archive_episodes = False
self.download_folder = None
self.pause_subscription = False
self.sync_to_mp3_player = True
self.cover_thumb = None
self.section = _('Other')
self._common_prefix = None
self.download_strategy = PodcastChannel.STRATEGY_DEFAULT
if self.id:
self.children = self.db.load_episodes(self, self.episode_factory)
self._determine_common_prefix()
@property
def model(self):
return self.parent
@property
def db(self):
return self.parent.db
def get_download_strategies(self):
for value, caption in PodcastChannel.STRATEGIES:
yield self.download_strategy == value, value, caption
def set_download_strategy(self, download_strategy):
if download_strategy == self.download_strategy:
return
caption = dict(self.STRATEGIES).get(download_strategy)
if caption is not None:
logger.debug('Strategy for %s changed to %s', self.title, caption)
self.download_strategy = download_strategy
else:
logger.warn('Cannot set strategy to %d', download_strategy)
def rewrite_url(self, new_url):
new_url = util.normalize_feed_url(new_url)
if new_url is None:
return None
self.url = new_url
self.http_etag = None
self.http_last_modified = None
self.save()
return new_url
def check_download_folder(self):
"""Check the download folder for externally-downloaded files
This will try to assign downloaded files with episodes in the
database.
This will also cause missing files to be marked as deleted.
"""
known_files = set()
for episode in self.get_episodes(gpodder.STATE_DOWNLOADED):
if episode.was_downloaded():
filename = episode.local_filename(create=False)
if filename is None:
# No filename has been determined for this episode
continue
if not os.path.exists(filename):
# File has been deleted by the user - simulate a
# delete event (also marks the episode as deleted)
logger.debug('Episode deleted: %s', filename)
episode.delete_from_disk()
continue
known_files.add(filename)
existing_files = set(filename for filename in
glob.glob(os.path.join(self.save_dir, '*'))
if not filename.endswith('.partial'))
ignore_files = ['folder' + ext for ext in
coverart.CoverDownloader.EXTENSIONS]
external_files = existing_files.difference(list(known_files) +
[os.path.join(self.save_dir, ignore_file)
for ignore_file in ignore_files])
if not external_files:
return
all_episodes = self.get_all_episodes()
for filename in external_files:
found = False
basename = os.path.basename(filename)
existing = [e for e in all_episodes if e.download_filename == basename]
if existing:
existing = existing[0]
logger.info('Importing external download: %s', filename)
existing.on_downloaded(filename)
continue
for episode in all_episodes:
wanted_filename = episode.local_filename(create=True,
return_wanted_filename=True)
if basename == wanted_filename:
logger.info('Importing external download: %s', filename)
episode.download_filename = basename
episode.on_downloaded(filename)
found = True
break
wanted_base, wanted_ext = os.path.splitext(wanted_filename)
target_base, target_ext = os.path.splitext(basename)
if wanted_base == target_base:
# Filenames only differ by the extension
wanted_type = util.file_type_by_extension(wanted_ext)
target_type = util.file_type_by_extension(target_ext)
# If wanted type is None, assume that we don't know
# the right extension before the download (e.g. YouTube)
# if the wanted type is the same as the target type,
# assume that it's the correct file
if wanted_type is None or wanted_type == target_type:
logger.info('Importing external download: %s', filename)
episode.download_filename = basename
episode.on_downloaded(filename)
found = True
break
if not found and not util.is_system_file(filename):
logger.warn('Unknown external file: %s', filename)
@classmethod
def sort_key(cls, podcast):
key = util.convert_bytes(podcast.title.lower())
return re.sub('^the ', '', key).translate(cls.UNICODE_TRANSLATE)
@classmethod
def load(cls, model, url, create=True, authentication_tokens=None, max_episodes=0):
existing = [p for p in model.get_podcasts() if p.url == url]
if existing:
return existing[0]
if create:
tmp = cls(model)
tmp.url = url
if authentication_tokens is not None:
tmp.auth_username = authentication_tokens[0]
tmp.auth_password = authentication_tokens[1]
# Save podcast, so it gets an ID assigned before
# updating the feed and adding saving episodes
tmp.save()
try:
tmp.update(max_episodes)
except Exception as e:
logger.debug('Fetch failed. Removing buggy feed.')
tmp.remove_downloaded()
tmp.delete()
raise
# Determine the section in which this podcast should appear
tmp.section = tmp._get_content_type()
# Determine a new download folder now that we have the title
tmp.get_save_dir(force_new=True)
# Mark episodes as downloaded if files already exist (bug 902)
tmp.check_download_folder()
# Determine common prefix of episode titles
tmp._determine_common_prefix()
tmp.save()
gpodder.user_extensions.on_podcast_subscribe(tmp)
return tmp
def episode_factory(self, d):
"""
This function takes a dictionary containing key-value pairs for
episodes and returns a new PodcastEpisode object that is connected
to this object.
Returns: A new PodcastEpisode object
"""
return self.EpisodeClass.create_from_dict(d, self)
def _consume_updated_title(self, new_title):
# Replace multi-space and newlines with single space (Maemo bug 11173)
new_title = re.sub('\s+', ' ', new_title).strip()
# Only update the podcast-supplied title when we
# don't yet have a title, or if the title is the
# feed URL (e.g. we didn't find a title before).
if not self.title or self.title == self.url:
self.title = new_title
# Start YouTube- and Vimeo-specific title FIX
YOUTUBE_PREFIX = 'Uploads by '
VIMEO_PREFIX = 'Vimeo / '
if self.title.startswith(YOUTUBE_PREFIX):
self.title = self.title[len(YOUTUBE_PREFIX):] + ' on YouTube'
elif self.title.startswith(VIMEO_PREFIX):
self.title = self.title[len(VIMEO_PREFIX):] + ' on Vimeo'
# End YouTube- and Vimeo-specific title FIX
def _consume_metadata(self, title, link, description, cover_url,
payment_url):
self._consume_updated_title(title)
self.link = link
self.description = description
self.cover_url = cover_url
self.payment_url = payment_url
self.save()
def _consume_updated_feed(self, feed, max_episodes=0):
self._consume_metadata(feed.get_title() or self.url,
feed.get_link() or self.link,
feed.get_description() or '',
feed.get_cover_url() or None,
feed.get_payment_url() or None)
# Update values for HTTP conditional requests
self.http_etag = feed.get_http_etag() or self.http_etag
self.http_last_modified = feed.get_http_last_modified() or self.http_last_modified
# Load all episodes to update them properly.
existing = self.get_all_episodes()
# GUID-based existing episode list
existing_guids = {e.guid: e for e in existing}
# Get most recent published of all episodes
last_published = self.db.get_last_published(self) or 0
# fix for #516 an episode was marked published one month in the future (typo in month number)
# causing every new episode to be marked old
tomorrow = datetime.datetime.now().timestamp() + self.SECONDS_PER_DAY
if last_published > tomorrow:
logger.debug('Episode published in the future for podcast %s', self.title)
last_published = tomorrow
# new episodes from feed
new_episodes, seen_guids = feed.get_new_episodes(self, existing_guids)
# pagination
next_feed = feed
next_max_episodes = max_episodes - len(seen_guids)
# want to paginate if:
# - we raised the max episode count so we want more old episodes now
# FIXME: could also be that feed has less episodes than max_episodes and we're paginating for nothing
# - all episodes are new so we continue getting them until max_episodes is reached
could_have_more = max_episodes > len(existing) or len(new_episodes) == len(seen_guids)
while next_feed and could_have_more:
if max_episodes > 0 and next_max_episodes <= 0:
logger.debug("stopping pagination: seen enough episodes (%i)", max_episodes)
break
# brand new: try to load another page!
next_result = next_feed.get_next_page(self, next_max_episodes)
if next_result and next_result.status == feedcore.UPDATED_FEED:
next_feed = next_result.feed
for e in new_episodes:
existing_guids[e.guid] = e
next_new_episodes, next_seen_guids = next_feed.get_new_episodes(self, existing_guids)
logger.debug("next page has %i new episodes", len(next_new_episodes))
next_max_episodes -= len(next_seen_guids)
new_episodes += next_new_episodes
seen_guids = seen_guids.union(next_seen_guids)
else:
next_feed = None
# mark episodes not new
real_new_episode_count = 0
# Search all entries for new episodes
for episode in new_episodes:
# Workaround for bug 340: If the episode has been
# published earlier than one week before the most
# recent existing episode, do not mark it as new.
if episode.published < last_published - self.SECONDS_PER_WEEK:
logger.debug('Episode with old date: %s', episode.title)
episode.is_new = False
episode.save()
if episode.is_new:
real_new_episode_count += 1
# Only allow a certain number of new episodes per update
if (self.download_strategy == PodcastChannel.STRATEGY_LATEST and
real_new_episode_count > 1):
episode.is_new = False
episode.save()
self.children.extend(new_episodes)
self.remove_unreachable_episodes(existing, seen_guids, max_episodes)
def remove_unreachable_episodes(self, existing, seen_guids, max_episodes):
# Remove "unreachable" episodes - episodes that have not been
# downloaded and that the feed does not list as downloadable anymore
# Keep episodes that are currently being downloaded, though (bug 1534)
if self.id is not None:
episodes_to_purge = [e for e in existing if
e.state != gpodder.STATE_DOWNLOADED and
e.guid not in seen_guids and not e.downloading]
for episode in episodes_to_purge:
logger.debug('Episode removed from feed: %s (%s)',
episode.title, episode.guid)
gpodder.user_extensions.on_episode_removed_from_podcast(episode)
self.db.delete_episode_by_guid(episode.guid, self.id)
# Remove the episode from the "children" episodes list
if self.children is not None:
self.children.remove(episode)
# This *might* cause episodes to be skipped if there were more than
# max_episodes_per_feed items added to the feed between updates.
# The benefit is that it prevents old episodes from apearing as new
# in certain situations (see bug #340).
self.db.purge(max_episodes, self.id) # TODO: Remove from self.children!
# Sort episodes by pubdate, descending
self.children.sort(key=lambda e: e.published, reverse=True)
def update(self, max_episodes=0):
max_episodes = int(max_episodes)
try:
result = self.feed_fetcher.fetch_channel(self, max_episodes)
if result.status == feedcore.UPDATED_FEED:
self._consume_updated_feed(result.feed, max_episodes)
elif result.status == feedcore.NEW_LOCATION:
url = result.feed
logger.info('New feed location: %s => %s', self.url, url)
if url in set(x.url for x in self.model.get_podcasts()):
raise Exception('Already subscribed to ' + url)
self.url = url
# With the updated URL, fetch the feed again
self.update(max_episodes)
return
elif result.status == feedcore.NOT_MODIFIED:
pass
self.save()
except Exception as e:
# "Not really" errors
# feedcore.AuthenticationRequired
# Temporary errors
# feedcore.Offline
# feedcore.BadRequest
# feedcore.InternalServerError
# feedcore.WifiLogin
# Permanent errors
# feedcore.Unsubscribe
# feedcore.NotFound
# feedcore.InvalidFeed
# feedcore.UnknownStatusCode
gpodder.user_extensions.on_podcast_update_failed(self, e)
raise
gpodder.user_extensions.on_podcast_updated(self)
# Re-determine the common prefix for all episodes
self._determine_common_prefix()
self.db.commit()
def delete(self):
self.db.delete_podcast(self)
self.model._remove_podcast(self)
def save(self):
if self.download_folder is None:
self.get_save_dir()
gpodder.user_extensions.on_podcast_save(self)
self.db.save_podcast(self)
self.model._append_podcast(self)
def get_statistics(self):
if self.id is None:
return (0, 0, 0, 0, 0)
else:
return self.db.get_podcast_statistics(self.id)
@property
def group_by(self):
if not self.section:
self.section = self._get_content_type()
self.save()
return self.section
def _get_content_type(self):
if 'youtube.com' in self.url or 'vimeo.com' in self.url or 'escapistmagazine.com' in self.url:
return _('Video')
audio, video, other = 0, 0, 0
for content_type in self.db.get_content_types(self.id):
content_type = content_type.lower()
if content_type.startswith('audio'):
audio += 1
elif content_type.startswith('video'):
video += 1
else:
other += 1
if audio >= video:
return _('Audio')
elif video > other:
return _('Video')
return _('Other')
def authenticate_url(self, url):
return util.url_add_authentication(url, self.auth_username, self.auth_password)
def rename(self, new_title):
new_title = new_title.strip()
if self.title == new_title:
return
new_folder_name = self.find_unique_folder_name(new_title)
if new_folder_name and new_folder_name != self.download_folder:
new_folder = os.path.join(gpodder.downloads, new_folder_name)
old_folder = os.path.join(gpodder.downloads, self.download_folder)
if os.path.exists(old_folder):
if not os.path.exists(new_folder):
# Old folder exists, new folder does not -> simply rename
logger.info('Renaming %s => %s', old_folder, new_folder)
os.rename(old_folder, new_folder)
else:
# Both folders exist -> move files and delete old folder
logger.info('Moving files from %s to %s', old_folder,
new_folder)
for file in glob.glob(os.path.join(old_folder, '*')):
shutil.move(file, new_folder)
logger.info('Removing %s', old_folder)
shutil.rmtree(old_folder, ignore_errors=True)
self.download_folder = new_folder_name
self.title = new_title
self.save()
def _determine_common_prefix(self):
# We need at least 2 episodes for the prefix to be "common" ;)
if len(self.children) < 2:
self._common_prefix = ''
return
prefix = os.path.commonprefix([x.title for x in self.children])
# The common prefix must end with a space - otherwise it's not
# on a word boundary, and we might end up chopping off too much
if prefix and prefix[-1] != ' ':
prefix = prefix[:prefix.rfind(' ') + 1]
self._common_prefix = prefix
def get_all_episodes(self):
return self.children
def get_episodes(self, state):
return [e for e in self.get_all_episodes() if e.state == state]
def find_unique_folder_name(self, download_folder):
# Remove trailing dots to avoid errors on Windows (bug 600)
# Also remove leading dots to avoid hidden folders on Linux
download_folder = download_folder.strip('.' + string.whitespace)
for folder_name in util.generate_names(download_folder):
if (not self.db.podcast_download_folder_exists(folder_name) or
self.download_folder == folder_name):
return folder_name
def get_save_dir(self, force_new=False):
if self.download_folder is None or force_new:
# we must change the folder name, because it has not been set manually
fn_template = util.sanitize_filename(self.title, self.MAX_FOLDERNAME_LENGTH)
if not fn_template:
fn_template = util.sanitize_filename(self.url, self.MAX_FOLDERNAME_LENGTH)
# Find a unique folder name for this podcast
download_folder = self.find_unique_folder_name(fn_template)
# Try removing the download folder if it has been created previously
if self.download_folder is not None:
folder = os.path.join(gpodder.downloads, self.download_folder)
try:
os.rmdir(folder)
except OSError:
logger.info('Old download folder is kept for %s', self.url)
logger.info('Updating download_folder of %s to %s', self.url,
download_folder)
self.download_folder = download_folder
self.save()
save_dir = os.path.join(gpodder.downloads, self.download_folder)
# Create save_dir if it does not yet exist
if not util.make_directory(save_dir):
logger.error('Could not create save_dir: %s', save_dir)
return save_dir
save_dir = property(fget=get_save_dir)
def remove_downloaded(self):
# Remove the download directory
for episode in self.get_episodes(gpodder.STATE_DOWNLOADED):
filename = episode.local_filename(create=False, check_only=True)
if filename is not None:
gpodder.user_extensions.on_episode_delete(episode, filename)
shutil.rmtree(self.save_dir, True)
@property
def cover_file(self):
return os.path.join(self.save_dir, 'folder')
class Model(object):
PodcastClass = PodcastChannel
def __init__(self, db):
self.db = db
self.children = None
def _append_podcast(self, podcast):
if podcast not in self.children:
self.children.append(podcast)
def _remove_podcast(self, podcast):
self.children.remove(podcast)
gpodder.user_extensions.on_podcast_delete(self)
def get_podcasts(self):
def podcast_factory(dct, db):
return self.PodcastClass.create_from_dict(dct, self, dct['id'])
if self.children is None:
self.children = self.db.load_podcasts(podcast_factory)
# Check download folders for changes (bug 902)
for podcast in self.children:
podcast.check_download_folder()
return self.children
def get_podcast(self, url):
for p in self.get_podcasts():
if p.url == url:
return p
return None
def load_podcast(self, url, create=True, authentication_tokens=None,
max_episodes=0):
assert all(url != podcast.url for podcast in self.get_podcasts())
return self.PodcastClass.load(self, url, create,
authentication_tokens,
max_episodes)
@classmethod
def podcast_sort_key(cls, podcast):
return cls.PodcastClass.sort_key(podcast)
@classmethod
def episode_sort_key(cls, episode):
return episode.published
@classmethod
def sort_episodes_by_pubdate(cls, episodes, reverse=False):
"""Sort a list of PodcastEpisode objects chronologically
Returns a iterable, sorted sequence of the episodes
"""
return sorted(episodes, key=cls.episode_sort_key, reverse=reverse)
def check_root_folder_path():
root = gpodder.home
if gpodder.ui.win32:
longest = len(root) \
+ 1 + PodcastChannel.MAX_FOLDERNAME_LENGTH \
+ 1 + PodcastEpisode.MAX_FILENAME_WITH_EXT_LENGTH
if longest > 260:
return _("Warning: path to gPodder home (%(root)s) is very long "
"and can result in failure to download files.\n" % {"root": root}) \
+ _("You're advised to set it to a shorter path.")
return None
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