mirror of https://github.com/morpheus65535/bazarr
560 lines
19 KiB
Python
560 lines
19 KiB
Python
# coding=utf-8
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from __future__ import absolute_import
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import logging
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import traceback
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import re
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import types
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import chardet
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import pysrt
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import pysubs2
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from bs4 import UnicodeDammit
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from pysubs2 import SSAStyle
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from pysubs2.subrip import parse_tags, MAX_REPRESENTABLE_TIME
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from pysubs2.time import ms_to_times
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from subzero.modification import SubtitleModifications
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from subzero.language import Language
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from subliminal import Subtitle as Subtitle_
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from subliminal.subtitle import Episode, Movie, sanitize_release_group, get_equivalent_release_groups
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from subliminal_patch.utils import sanitize
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from ftfy import fix_text
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from codecs import BOM_UTF8, BOM_UTF16_BE, BOM_UTF16_LE, BOM_UTF32_BE, BOM_UTF32_LE
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from six import text_type
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BOMS = (
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(BOM_UTF8, "UTF-8"),
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(BOM_UTF32_BE, "UTF-32-BE"),
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(BOM_UTF32_LE, "UTF-32-LE"),
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(BOM_UTF16_BE, "UTF-16-BE"),
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(BOM_UTF16_LE, "UTF-16-LE"),
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)
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logger = logging.getLogger(__name__)
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ftfy_defaults = {
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"uncurl_quotes": False,
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"fix_character_width": False,
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}
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class Subtitle(Subtitle_):
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storage_path = None
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release_info = None
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matches = {}
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hash_verifiable = False
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hearing_impaired_verifiable = False
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mods = None
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plex_media_fps = None
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skip_wrong_fps = False
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wrong_fps = False
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wrong_series = False
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wrong_season_ep = False
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is_pack = False
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asked_for_release_group = None
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asked_for_episode = None
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uploader = None # string - uploader username
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pack_data = None
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_guessed_encoding = None
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_is_valid = False
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use_original_format = False
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format = "srt" # default format is srt
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def __init__(self, language, hearing_impaired=False, page_link=None, encoding=None, mods=None, original_format=False):
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# set subtitle language to hi if it's hearing_impaired
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if hearing_impaired:
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language = Language.rebuild(language, hi=True)
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super(Subtitle, self).__init__(language, hearing_impaired=hearing_impaired, page_link=page_link,
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encoding=encoding)
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self.mods = mods
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self._is_valid = False
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self.use_original_format = original_format
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def __repr__(self):
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return '<%s %r [%s:%s]>' % (
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self.__class__.__name__, self.page_link, self.language, self._guessed_encoding)
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@property
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def text(self):
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"""Content as string
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If :attr:`encoding` is None, the encoding is guessed with :meth:`guess_encoding`
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"""
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if not self.content:
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return
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if not isinstance(self.content, text_type):
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return self.content.decode(self.get_encoding(), errors='replace')
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return self.content
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@property
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def numeric_id(self):
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raise NotImplemented
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def get_fps(self):
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"""
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:return: frames per second or None if not supported
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:rtype: float
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"""
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return None
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def make_picklable(self):
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"""
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some subtitle instances might have unpicklable objects stored; clean them up here
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:return: self
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"""
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return self
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def get_encoding(self):
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return self.guess_encoding()
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def set_encoding(self, encoding):
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ge = self.get_encoding()
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if encoding == ge:
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return
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unicontent = self.text
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logger.debug("Changing encoding: to %s, from %s", encoding, ge)
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self.content = unicontent.encode(encoding)
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self._guessed_encoding = encoding
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def normalize(self):
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"""
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Set encoding to UTF-8 and normalize line endings
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:return:
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"""
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self.set_encoding("utf-8")
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# normalize line endings
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self.content = self.content.replace(b"\r\n", b"\n").replace(b'\r', b'\n')
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def _check_bom(self, data):
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return [encoding for bom, encoding in BOMS if data.startswith(bom)]
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def guess_encoding(self):
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"""Guess encoding using the language, falling back on chardet.
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:return: the guessed encoding.
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:rtype: str
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"""
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if self._guessed_encoding:
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return self._guessed_encoding
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if self.encoding:
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# check provider encoding and use it only if it is valid
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try:
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self.content.decode(self.encoding)
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self._guessed_encoding = self.encoding
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return self._guessed_encoding
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except:
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# provider specified encoding is invalid, fallback to guessing
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pass
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logger.info('Guessing encoding for language %s', self.language)
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encodings = ['utf-8']
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# check UTF BOMs
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bom_encodings = self._check_bom(self.content)
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if bom_encodings:
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encodings = list(set(enc.lower() for enc in bom_encodings + encodings))
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# add language-specific encodings
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# http://scratchpad.wikia.com/wiki/Character_Encoding_Recommendation_for_Languages
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if self.language.alpha3 == 'zho':
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encodings.extend(['cp936', 'gb2312', 'gbk', 'hz', 'iso2022_jp_2', 'cp950', 'big5hkscs', 'big5',
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'gb18030', 'utf-16'])
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elif self.language.alpha3 == 'jpn':
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encodings.extend(['shift-jis', 'cp932', 'euc_jp', 'iso2022_jp', 'iso2022_jp_1', 'iso2022_jp_2',
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'iso2022_jp_2004', 'iso2022_jp_3', 'iso2022_jp_ext', ])
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elif self.language.alpha3 == 'tha':
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encodings.extend(['tis-620', 'cp874'])
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# arabian/farsi
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elif self.language.alpha3 in ('ara', 'fas', 'per'):
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encodings.extend(['windows-1256', 'utf-16', 'utf-16le', 'ascii', 'iso-8859-6'])
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elif self.language.alpha3 == 'heb':
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encodings.extend(['windows-1255', 'iso-8859-8'])
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elif self.language.alpha3 == 'tur':
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encodings.extend(['windows-1254', 'iso-8859-9', 'iso-8859-3'])
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# Greek
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elif self.language.alpha3 in ('grc', 'gre', 'ell'):
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encodings.extend(['windows-1253', 'cp1253', 'cp737', 'iso8859-7', 'cp875', 'cp869', 'iso2022_jp_2',
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'mac_greek'])
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# Polish, Czech, Slovak, Hungarian, Slovene, Bosnian, Croatian, Serbian (Latin script),
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# Romanian and Albanian
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elif self.language.alpha3 in ('pol', 'cze', 'ces', 'slk', 'slo', 'slv', 'hun', 'bos', 'hbs', 'hrv', 'rsb',
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'ron', 'rum', 'sqi', 'alb'):
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encodings.extend(['windows-1250', 'iso-8859-2'])
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# Eastern European Group 1
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if self.language.alpha3 == "slv":
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encodings.append('iso-8859-4')
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# Albanian
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elif self.language.alpha3 in ("sqi", "alb"):
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encodings.extend(['windows-1252', 'iso-8859-15', 'iso-8859-1', 'iso-8859-9'])
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# Bulgarian, Serbian and Macedonian, Ukranian and Russian
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elif self.language.alpha3 in ('bul', 'srp', 'mkd', 'mac', 'rus', 'ukr'):
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# Eastern European Group 2
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if self.language.alpha3 in ('bul', 'mkd', 'mac', 'rus', 'ukr'):
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encodings.extend(['windows-1251', 'iso-8859-5'])
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elif self.language.alpha3 == 'srp':
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if self.language.script == "Latn":
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encodings.extend(['windows-1250', 'iso-8859-2'])
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elif self.language.script == "Cyrl":
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encodings.extend(['windows-1251', 'iso-8859-5'])
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else:
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encodings.extend(['windows-1250', 'windows-1251', 'iso-8859-2', 'iso-8859-5'])
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else:
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# Western European (windows-1252) / Northern European
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encodings.extend(['windows-1252', 'iso-8859-15', 'iso-8859-9', 'iso-8859-4', 'iso-8859-1'])
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# try to decode
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logger.debug('Trying encodings %r', encodings)
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for encoding in encodings:
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try:
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self.content.decode(encoding)
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except UnicodeDecodeError:
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pass
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else:
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logger.info('Guessed encoding %s', encoding)
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self._guessed_encoding = encoding
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return encoding
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logger.warning('Could not guess encoding from language')
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# fallback on chardet
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encoding = chardet.detect(self.content)['encoding']
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logger.info('Chardet found encoding %s', encoding)
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if not encoding:
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# fallback on bs4
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logger.info('Falling back to bs4 detection')
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a = UnicodeDammit(self.content)
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logger.info("bs4 detected encoding: %s", a.original_encoding)
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if a.original_encoding:
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self._guessed_encoding = a.original_encoding
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return a.original_encoding
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raise ValueError(u"Couldn't guess the proper encoding for %s", self)
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self._guessed_encoding = encoding
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return encoding
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def is_valid(self):
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"""Check if a :attr:`text` is a valid SubRip format. Note that orignal format will pypass the checking
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:return: whether or not the subtitle is valid.
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:rtype: bool
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"""
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if self._is_valid:
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return True
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text = self.text
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if not text:
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return False
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# valid srt
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try:
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pysrt.from_string(text, error_handling=pysrt.ERROR_RAISE)
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except Exception:
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logger.error("PySRT-parsing failed, trying pysubs2")
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else:
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self._is_valid = True
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return True
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# something else, try to return srt
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try:
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logger.debug("Trying parsing with PySubs2")
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try:
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# in case of microdvd, try parsing the fps from the subtitle
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subs = pysubs2.SSAFile.from_string(text)
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if subs.format == "microdvd":
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logger.info("Got FPS from MicroDVD subtitle: %s", subs.fps)
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else:
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logger.info("Got format: %s", subs.format)
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if self.use_original_format:
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self.format = subs.format
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self._is_valid = True
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logger.debug("Using original format")
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return True
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except pysubs2.UnknownFPSError:
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# if parsing failed, use frame rate from provider
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sub_fps = self.get_fps()
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if not isinstance(sub_fps, float) or sub_fps < 10.0:
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# or use our media file's fps as a fallback
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sub_fps = self.plex_media_fps
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logger.info("No FPS info in subtitle. Using our own media FPS for the MicroDVD subtitle: %s",
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self.plex_media_fps)
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subs = pysubs2.SSAFile.from_string(text, fps=sub_fps)
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unicontent = self.pysubs2_to_unicode(subs)
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self.content = unicontent.encode(self.get_encoding())
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except:
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logger.exception("Couldn't convert subtitle %s to .srt format: %s", self, traceback.format_exc())
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return False
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self._is_valid = True
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return True
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@classmethod
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def pysubs2_to_unicode(cls, sub, format="srt"):
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"""
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this is a modified version of pysubs2.SubripFormat.to_file with special handling for drawing tags in ASS
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:param sub:
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:param format:
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:return:
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"""
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def ms_to_timestamp(ms, mssep=","):
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"""Convert ms to 'HH:MM:SS,mmm'"""
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# XXX throw on overflow/underflow?
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if ms < 0: ms = 0
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if ms > MAX_REPRESENTABLE_TIME: ms = MAX_REPRESENTABLE_TIME
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h, m, s, ms = ms_to_times(ms)
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return "%02d:%02d:%02d%s%03d" % (h, m, s, mssep, ms)
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def prepare_text(text, style):
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body = []
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for fragment, sty in parse_tags(text, style, sub.styles):
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fragment = fragment.replace(r"\h", u" ")
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fragment = fragment.replace(r"\n", u"\n")
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fragment = fragment.replace(r"\N", u"\n")
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if sty.drawing:
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raise pysubs2.ContentNotUsable
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if format == "srt":
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if sty.italic:
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fragment = u"<i>%s</i>" % fragment
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if sty.underline:
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fragment = u"<u>%s</u>" % fragment
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if sty.strikeout:
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fragment = u"<s>%s</s>" % fragment
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elif format == "vtt":
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if sty.bold:
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fragment = u"<b>%s</b>" % fragment
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if sty.italic:
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fragment = u"<i>%s</i>" % fragment
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if sty.underline:
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fragment = u"<u>%s</u>" % fragment
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body.append(fragment)
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return re.sub(u"\n+", u"\n", u"".join(body).strip())
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visible_lines = (line for line in sub if not line.is_comment)
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out = []
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mssep = ","
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if format == "vtt":
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out.append("WEBVTT\n\n")
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mssep = "."
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for i, line in enumerate(visible_lines, 1):
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start = ms_to_timestamp(line.start, mssep=mssep)
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end = ms_to_timestamp(line.end, mssep=mssep)
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try:
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text = prepare_text(line.text, sub.styles.get(line.style, SSAStyle.DEFAULT_STYLE))
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except pysubs2.ContentNotUsable:
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continue
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out.append(u"%d\n" % i)
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out.append(u"%s --> %s\n" % (start, end))
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out.append(u"%s%s" % (text, "\n\n"))
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return u"".join(out)
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def get_modified_content(self, format="srt", debug=False):
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"""
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:return: string
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"""
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if not self.mods:
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return fix_text(self.content.decode(encoding=self.get_encoding()), **ftfy_defaults).encode(
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encoding=self.get_encoding())
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submods = SubtitleModifications(debug=debug)
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if submods.load(content=self.text, language=self.language):
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logger.info("Applying mods: %s", self.mods)
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submods.modify(*self.mods)
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self.mods = submods.mods_used
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content = fix_text(self.pysubs2_to_unicode(submods.f, format=format), **ftfy_defaults)\
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.encode(encoding=self.get_encoding())
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submods.f = None
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del submods
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return content
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return None
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class ModifiedSubtitle(Subtitle):
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id = None
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MERGED_FORMATS = {
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"TV": ("HDTV", "SDTV", "AHDTV", "Ultra HDTV"),
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"Air": ("SATRip", "DVB", "PPV", "Digital TV"),
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"Disk-HD": ("HD-DVD", "Blu-ray", "Ultra HD Blu-ray"),
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"Disk-SD": ("DVD", "VHS"),
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"Web": ("Web",),
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}
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MERGED_FORMATS_REV = dict((v.lower(), k.lower()) for k in MERGED_FORMATS for v in MERGED_FORMATS[k])
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def _has_match(video, guess, key) -> bool:
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value = getattr(video, key)
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guess_value = guess.get(key)
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# To avoid extra debug calls
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if guess_value is None or value is None:
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return False
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if isinstance(guess_value, list):
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matched = any(value == item for item in guess_value)
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else:
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matched = value == guess_value
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logger.debug("%s matched? %s (%s -> %s)", key, matched, value, guess_value)
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return matched
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def guess_matches(video, guess, partial=False):
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"""Get matches between a `video` and a `guess`.
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If a guess is `partial`, the absence information won't be counted as a match.
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Patch: add multiple release group and formats handling
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:param video: the video.
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:type video: :class:`~subliminal.video.Video`
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:param guess: the guess.
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:type guess: dict
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:param bool partial: whether or not the guess is partial.
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:return: matches between the `video` and the `guess`.
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:rtype: set
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"""
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matches = set()
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if isinstance(video, Episode):
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# series
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if video.series and 'title' in guess:
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titles = guess["title"]
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if not isinstance(titles, list):
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titles = [titles]
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for title in titles:
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if sanitize(title) in (sanitize(name) for name in [video.series] + video.alternative_series):
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matches.add('series')
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# title
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if video.title and 'episode_title' in guess and sanitize(guess['episode_title']) == sanitize(video.title):
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matches.add('title')
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# season
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if video.season and 'season' in guess and guess['season'] == video.season:
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matches.add('season')
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# episode
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# Currently we only have single-ep support (guessit returns a multi-ep as a list with int values)
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# Most providers only support single-ep, so make sure it contains only 1 episode
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# In case of multi-ep, take the lowest episode (subtitles will normally be available on lowest episode number)
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if video.episode and 'episode' in guess:
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episode_guess = guess['episode']
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episode = min(episode_guess) if episode_guess and isinstance(episode_guess, list) else episode_guess
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if episode == video.episode:
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matches.add('episode')
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# year
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if video.year and 'year' in guess and guess['year'] == video.year:
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matches.add('year')
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# count "no year" as an information
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if not partial and video.original_series and 'year' not in guess:
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matches.add('year')
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elif isinstance(video, Movie):
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# year
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if video.year and 'year' in guess and guess['year'] == video.year:
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matches.add('year')
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# title
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if video.title and 'title' in guess and sanitize(guess['title']) in (
|
|
sanitize(name) for name in [video.title] + video.alternative_titles):
|
|
matches.add('title')
|
|
|
|
# release_group
|
|
if 'release_group' in guess:
|
|
release_groups = guess["release_group"]
|
|
if not isinstance(release_groups, list):
|
|
release_groups = [release_groups]
|
|
|
|
if video.release_group:
|
|
for release_group in release_groups:
|
|
if (sanitize_release_group(release_group) in
|
|
get_equivalent_release_groups(sanitize_release_group(video.release_group))):
|
|
matches.add('release_group')
|
|
break
|
|
# source
|
|
if 'source' in guess:
|
|
formats = guess["source"]
|
|
if not isinstance(formats, list):
|
|
formats = [formats]
|
|
|
|
if video.source:
|
|
video_format = video.source.lower()
|
|
_video_gen_format = MERGED_FORMATS_REV.get(video_format)
|
|
matched = False
|
|
for frmt in formats:
|
|
_guess_gen_frmt = MERGED_FORMATS_REV.get(frmt.lower())
|
|
# We don't want to match a singleton
|
|
if _guess_gen_frmt is None: # If the source is not in MERGED_FORMATS
|
|
_guess_gen_frmt = guess["source"]
|
|
|
|
if _guess_gen_frmt == _video_gen_format:
|
|
matched = True
|
|
matches.add('source')
|
|
break
|
|
|
|
logger.debug("Source match found? %s: %s -> %s", matched, video.source, formats)
|
|
|
|
if "release_group" in matches and "source" not in matches:
|
|
logger.info("Release group matched but source didn't. Removing release group match.")
|
|
matches.remove("release_group")
|
|
|
|
guess.update({"resolution": guess.get("screen_size")})
|
|
|
|
# Solve match keys for potential lists
|
|
for key in ("video_codec", "audio_codec", "edition", "streaming_service", "resolution"):
|
|
if _has_match(video, guess, key):
|
|
matches.add(key)
|
|
|
|
# Add streaming service match for non-web sources
|
|
if video.source and video.source != "Web":
|
|
matches.add("streaming_service")
|
|
|
|
# As edition tags are rare, add edition match if the video doesn't have an edition
|
|
if not video.edition:
|
|
matches.add("edition")
|
|
|
|
return matches
|