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SickGear/sickbeard/name_parser/parser.py
Adam 37496189f1 Change py2 exception clauses to py2/3 compatible clauses 
Add py2/3 regression testing for exception clauses

Any new code added with old py2 style exceptions will now fail the travis test
2015-06-08 22:56:45 +08:00

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# Author: Nic Wolfe <nic@wolfeden.ca>
# URL: http://code.google.com/p/sickbeard/
#
# This file is part of SickGear.
#
# SickGear 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.
#
# SickGear 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 SickGear. If not, see <http://www.gnu.org/licenses/>.
from __future__ import with_statement
import os
import time
import re
import datetime
import os.path
import regexes
import sickbeard
from sickbeard import logger, helpers, scene_numbering, common, scene_exceptions, encodingKludge as ek, db
from dateutil import parser
from sickbeard.exceptions import ex
class NameParser(object):
ALL_REGEX = 0
NORMAL_REGEX = 1
ANIME_REGEX = 2
def __init__(self, file_name=True, showObj=None, try_indexers=False, try_scene_exceptions=False, convert=False,
naming_pattern=False, testing=False):
self.file_name = file_name
self.showObj = showObj
self.try_indexers = try_indexers
self.try_scene_exceptions = try_scene_exceptions
self.convert = convert
self.naming_pattern = naming_pattern
self.testing = testing
if self.showObj and not self.showObj.is_anime:
self._compile_regexes(self.NORMAL_REGEX)
elif self.showObj and self.showObj.is_anime:
self._compile_regexes(self.ANIME_REGEX)
else:
self._compile_regexes(self.ALL_REGEX)
def clean_series_name(self, series_name):
"""Cleans up series name by removing any . and _
characters, along with any trailing hyphens.
Is basically equivalent to replacing all _ and . with a
space, but handles decimal numbers in string, for example:
>>> cleanRegexedSeriesName("an.example.1.0.test")
'an example 1.0 test'
>>> cleanRegexedSeriesName("an_example_1.0_test")
'an example 1.0 test'
Stolen from dbr's tvnamer
"""
series_name = re.sub("(\D)\.(?!\s)(\D)", "\\1 \\2", series_name)
series_name = re.sub("(\d)\.(\d{4})", "\\1 \\2", series_name) # if it ends in a year then don't keep the dot
series_name = re.sub("(\D)\.(?!\s)", "\\1 ", series_name)
series_name = re.sub("\.(?!\s)(\D)", " \\1", series_name)
series_name = series_name.replace("_", " ")
series_name = re.sub("-$", "", series_name)
series_name = re.sub("^\[.*\]", "", series_name)
return series_name.strip()
def _compile_regexes(self, regexMode):
if regexMode == self.ANIME_REGEX:
logger.log(u"Using ANIME regexs", logger.DEBUG)
uncompiled_regex = [regexes.anime_regexes]
elif regexMode == self.NORMAL_REGEX:
logger.log(u"Using NORMAL regexs", logger.DEBUG)
uncompiled_regex = [regexes.normal_regexes]
else:
logger.log(u"Using ALL regexes", logger.DEBUG)
uncompiled_regex = [regexes.normal_regexes, regexes.anime_regexes]
self.compiled_regexes = {0: [], 1: []}
index = 0
for regexItem in uncompiled_regex:
for cur_pattern_num, (cur_pattern_name, cur_pattern) in enumerate(regexItem):
try:
cur_regex = re.compile(cur_pattern, re.VERBOSE | re.IGNORECASE)
except re.error as errormsg:
logger.log(u"WARNING: Invalid episode_pattern, %s. %s" % (errormsg, cur_pattern))
else:
self.compiled_regexes[index].append([cur_pattern_num, cur_pattern_name, cur_regex])
index += 1
def _parse_string(self, name):
if not name:
return
matches = []
bestResult = None
for regex in self.compiled_regexes:
for (cur_regex_num, cur_regex_name, cur_regex) in self.compiled_regexes[regex]:
match = cur_regex.match(name)
if not match:
continue
result = ParseResult(name)
result.which_regex = [cur_regex_name]
result.score = 0 - cur_regex_num
named_groups = match.groupdict().keys()
if 'series_name' in named_groups:
result.series_name = match.group('series_name')
if result.series_name:
result.series_name = self.clean_series_name(result.series_name)
result.score += 1
if 'series_num' in named_groups and match.group('series_num'):
result.score += 1
if 'season_num' in named_groups:
tmp_season = int(match.group('season_num'))
if cur_regex_name == 'bare' and tmp_season in (19, 20):
continue
result.season_number = tmp_season
result.score += 1
if 'ep_num' in named_groups:
ep_num = self._convert_number(match.group('ep_num'))
if 'extra_ep_num' in named_groups and match.group('extra_ep_num'):
result.episode_numbers = range(ep_num, self._convert_number(match.group('extra_ep_num')) + 1)
result.score += 1
else:
result.episode_numbers = [ep_num]
result.score += 1
if 'ep_ab_num' in named_groups:
ep_ab_num = self._convert_number(match.group('ep_ab_num'))
if 'extra_ab_ep_num' in named_groups and match.group('extra_ab_ep_num'):
result.ab_episode_numbers = range(ep_ab_num,
self._convert_number(match.group('extra_ab_ep_num')) + 1)
result.score += 1
else:
result.ab_episode_numbers = [ep_ab_num]
result.score += 1
if 'air_year' in named_groups and 'air_month' in named_groups and 'air_day' in named_groups:
year = int(match.group('air_year'))
month = int(match.group('air_month'))
day = int(match.group('air_day'))
# make an attempt to detect YYYY-DD-MM formats
if month > 12:
tmp_month = month
month = day
day = tmp_month
try:
result.air_date = datetime.date(year, month, day)
except ValueError as e:
raise InvalidNameException(ex(e))
if 'extra_info' in named_groups:
tmp_extra_info = match.group('extra_info')
# Show.S04.Special or Show.S05.Part.2.Extras is almost certainly not every episode in the season
if tmp_extra_info and cur_regex_name == 'season_only' and re.search(
r'([. _-]|^)(special|extra)s?\w*([. _-]|$)', tmp_extra_info, re.I):
continue
result.extra_info = tmp_extra_info
result.score += 1
if 'release_group' in named_groups:
result.release_group = match.group('release_group')
result.score += 1
if 'version' in named_groups:
# assigns version to anime file if detected using anime regex. Non-anime regex receives -1
version = match.group('version')
if version:
result.version = version
else:
result.version = 1
else:
result.version = -1
matches.append(result)
if len(matches):
# pick best match with highest score based on placement
bestResult = max(sorted(matches, reverse=True, key=lambda x: x.which_regex), key=lambda x: x.score)
show = None
if not self.naming_pattern:
# try and create a show object for this result
show = helpers.get_show(bestResult.series_name, self.try_indexers, self.try_scene_exceptions)
# confirm passed in show object indexer id matches result show object indexer id
if show and not self.testing:
if self.showObj and show.indexerid != self.showObj.indexerid:
show = None
bestResult.show = show
elif not show and self.showObj:
bestResult.show = self.showObj
if bestResult.show and bestResult.show.is_anime and len(self.compiled_regexes[1]) > 1 and regex != 1:
continue
# if this is a naming pattern test or result doesn't have a show object then return best result
if not bestResult.show or self.naming_pattern:
return bestResult
# get quality
bestResult.quality = common.Quality.nameQuality(name, bestResult.show.is_anime)
new_episode_numbers = []
new_season_numbers = []
new_absolute_numbers = []
# if we have an air-by-date show then get the real season/episode numbers
if bestResult.is_air_by_date:
airdate = bestResult.air_date.toordinal()
myDB = db.DBConnection()
sql_result = myDB.select(
"SELECT season, episode FROM tv_episodes WHERE showid = ? and indexer = ? and airdate = ?",
[bestResult.show.indexerid, bestResult.show.indexer, airdate])
season_number = None
episode_numbers = []
if sql_result:
season_number = int(sql_result[0][0])
episode_numbers = [int(sql_result[0][1])]
if not season_number or not len(episode_numbers):
try:
lINDEXER_API_PARMS = sickbeard.indexerApi(bestResult.show.indexer).api_params.copy()
if bestResult.show.lang:
lINDEXER_API_PARMS['language'] = bestResult.show.lang
t = sickbeard.indexerApi(bestResult.show.indexer).indexer(**lINDEXER_API_PARMS)
epObj = t[bestResult.show.indexerid].airedOn(bestResult.air_date)[0]
season_number = int(epObj["seasonnumber"])
episode_numbers = [int(epObj["episodenumber"])]
except sickbeard.indexer_episodenotfound:
logger.log(u"Unable to find episode with date " + str(bestResult.air_date) + " for show " + bestResult.show.name + ", skipping", logger.WARNING)
episode_numbers = []
except sickbeard.indexer_error as e:
logger.log(u"Unable to contact " + sickbeard.indexerApi(bestResult.show.indexer).name + ": " + ex(e), logger.WARNING)
episode_numbers = []
for epNo in episode_numbers:
s = season_number
e = epNo
if self.convert:
(s, e) = scene_numbering.get_indexer_numbering(bestResult.show.indexerid,
bestResult.show.indexer,
season_number,
epNo)
new_episode_numbers.append(e)
new_season_numbers.append(s)
elif bestResult.show.is_anime and len(bestResult.ab_episode_numbers) and not self.testing:
scene_season = scene_exceptions.get_scene_exception_by_name(bestResult.series_name)[1]
for epAbsNo in bestResult.ab_episode_numbers:
a = epAbsNo
if self.convert:
a = scene_numbering.get_indexer_absolute_numbering(bestResult.show.indexerid,
bestResult.show.indexer, epAbsNo,
True, scene_season)
(s, e) = helpers.get_all_episodes_from_absolute_number(bestResult.show, [a])
new_absolute_numbers.append(a)
new_episode_numbers.extend(e)
new_season_numbers.append(s)
elif bestResult.season_number and len(bestResult.episode_numbers) and not self.testing:
for epNo in bestResult.episode_numbers:
s = bestResult.season_number
e = epNo
if self.convert:
(s, e) = scene_numbering.get_indexer_numbering(bestResult.show.indexerid,
bestResult.show.indexer,
bestResult.season_number,
epNo)
if bestResult.show.is_anime:
a = helpers.get_absolute_number_from_season_and_episode(bestResult.show, s, e)
if a:
new_absolute_numbers.append(a)
new_episode_numbers.append(e)
new_season_numbers.append(s)
# need to do a quick sanity check heregex. It's possible that we now have episodes
# from more than one season (by tvdb numbering), and this is just too much
# for sickbeard, so we'd need to flag it.
new_season_numbers = list(set(new_season_numbers)) # remove duplicates
if len(new_season_numbers) > 1:
raise InvalidNameException("Scene numbering results episodes from "
"seasons %s, (i.e. more than one) and "
"SickGear does not support this. "
"Sorry." % (str(new_season_numbers)))
# I guess it's possible that we'd have duplicate episodes too, so lets
# eliminate them
new_episode_numbers = list(set(new_episode_numbers))
new_episode_numbers.sort()
# maybe even duplicate absolute numbers so why not do them as well
new_absolute_numbers = list(set(new_absolute_numbers))
new_absolute_numbers.sort()
if len(new_absolute_numbers):
bestResult.ab_episode_numbers = new_absolute_numbers
if len(new_season_numbers) and len(new_episode_numbers):
bestResult.episode_numbers = new_episode_numbers
bestResult.season_number = new_season_numbers[0]
if self.convert:
logger.log(
u"Converted parsed result " + bestResult.original_name + " into " + str(bestResult).decode('utf-8',
'xmlcharrefreplace'),
logger.DEBUG)
# CPU sleep
time.sleep(0.02)
return bestResult
def _combine_results(self, first, second, attr):
# if the first doesn't exist then return the second or nothing
if not first:
if not second:
return None
else:
return getattr(second, attr)
# if the second doesn't exist then return the first
if not second:
return getattr(first, attr)
a = getattr(first, attr)
b = getattr(second, attr)
# if a is good use it
if a != None or (type(a) == list and len(a)):
return a
# if not use b (if b isn't set it'll just be default)
else:
return b
def _unicodify(self, obj, encoding="utf-8"):
if isinstance(obj, basestring):
if not isinstance(obj, unicode):
obj = unicode(obj, encoding, 'replace')
return obj
def _convert_number(self, org_number):
"""
Convert org_number into an integer
org_number: integer or representation of a number: string or unicode
Try force converting to int first, on error try converting from Roman numerals
returns integer or 0
"""
try:
# try forcing to int
if org_number:
number = int(org_number)
else:
number = 0
except:
# on error try converting from Roman numerals
roman_to_int_map = (('M', 1000), ('CM', 900), ('D', 500), ('CD', 400), ('C', 100),
('XC', 90), ('L', 50), ('XL', 40), ('X', 10),
('IX', 9), ('V', 5), ('IV', 4), ('I', 1)
)
roman_numeral = str(org_number).upper()
number = 0
index = 0
for numeral, integer in roman_to_int_map:
while roman_numeral[index:index + len(numeral)] == numeral:
number += integer
index += len(numeral)
return number
def parse(self, name, cache_result=True):
name = self._unicodify(name)
if self.naming_pattern:
cache_result = False
cached = name_parser_cache.get(name)
if cached:
return cached
# break it into parts if there are any (dirname, file name, extension)
dir_name, file_name = ek.ek(os.path.split, name)
if self.file_name:
base_file_name = helpers.remove_extension(file_name)
else:
base_file_name = file_name
# set up a result to use
final_result = ParseResult(name)
# try parsing the file name
file_name_result = self._parse_string(base_file_name)
# use only the direct parent dir
dir_name = ek.ek(os.path.basename, dir_name)
# parse the dirname for extra info if needed
dir_name_result = self._parse_string(dir_name)
# build the ParseResult object
final_result.air_date = self._combine_results(file_name_result, dir_name_result, 'air_date')
# anime absolute numbers
final_result.ab_episode_numbers = self._combine_results(file_name_result, dir_name_result, 'ab_episode_numbers')
# season and episode numbers
final_result.season_number = self._combine_results(file_name_result, dir_name_result, 'season_number')
final_result.episode_numbers = self._combine_results(file_name_result, dir_name_result, 'episode_numbers')
# if the dirname has a release group/show name I believe it over the filename
final_result.series_name = self._combine_results(dir_name_result, file_name_result, 'series_name')
final_result.extra_info = self._combine_results(dir_name_result, file_name_result, 'extra_info')
final_result.release_group = self._combine_results(dir_name_result, file_name_result, 'release_group')
final_result.version = self._combine_results(dir_name_result, file_name_result, 'version')
final_result.which_regex = []
if final_result == file_name_result:
final_result.which_regex = file_name_result.which_regex
elif final_result == dir_name_result:
final_result.which_regex = dir_name_result.which_regex
else:
if file_name_result:
final_result.which_regex += file_name_result.which_regex
if dir_name_result:
final_result.which_regex += dir_name_result.which_regex
final_result.show = self._combine_results(file_name_result, dir_name_result, 'show')
final_result.quality = self._combine_results(file_name_result, dir_name_result, 'quality')
if not final_result.show:
if self.testing:
pass
#final_result.which_regex = []
else:
raise InvalidShowException(
"Unable to parse " + name.encode(sickbeard.SYS_ENCODING, 'xmlcharrefreplace'))
# if there's no useful info in it then raise an exception
if final_result.season_number == None and not final_result.episode_numbers and final_result.air_date == None and not final_result.ab_episode_numbers and not final_result.series_name:
raise InvalidNameException("Unable to parse " + name.encode(sickbeard.SYS_ENCODING, 'xmlcharrefreplace'))
if cache_result:
name_parser_cache.add(name, final_result)
logger.log(u"Parsed " + name + " into " + str(final_result).decode('utf-8', 'xmlcharrefreplace'), logger.DEBUG)
return final_result
class ParseResult(object):
def __init__(self,
original_name,
series_name=None,
season_number=None,
episode_numbers=None,
extra_info=None,
release_group=None,
air_date=None,
ab_episode_numbers=None,
show=None,
score=None,
quality=None,
version=None
):
self.original_name = original_name
self.series_name = series_name
self.season_number = season_number
if not episode_numbers:
self.episode_numbers = []
else:
self.episode_numbers = episode_numbers
if not ab_episode_numbers:
self.ab_episode_numbers = []
else:
self.ab_episode_numbers = ab_episode_numbers
if not quality:
self.quality = common.Quality.UNKNOWN
else:
self.quality = quality
self.extra_info = extra_info
self.release_group = release_group
self.air_date = air_date
self.which_regex = None
self.show = show
self.score = score
self.version = version
def __eq__(self, other):
if not other:
return False
if self.series_name != other.series_name:
return False
if self.season_number != other.season_number:
return False
if self.episode_numbers != other.episode_numbers:
return False
if self.extra_info != other.extra_info:
return False
if self.release_group != other.release_group:
return False
if self.air_date != other.air_date:
return False
if self.ab_episode_numbers != other.ab_episode_numbers:
return False
#if self.show != other.show:
# return False
#if self.score != other.score:
# return False
#if self.quality != other.quality:
# return False
#if self.version != other.version:
# return False
return True
def __str__(self):
if self.series_name != None:
to_return = self.series_name + u' - '
else:
to_return = u''
if self.season_number != None:
to_return += 'S' + str(self.season_number)
if self.episode_numbers and len(self.episode_numbers):
for e in self.episode_numbers:
to_return += 'E' + str(e)
if self.is_air_by_date:
to_return += str(self.air_date)
if self.ab_episode_numbers:
to_return += ' [ABS: ' + str(self.ab_episode_numbers) + ']'
if self.is_anime:
if self.version:
to_return += ' [ANIME VER: ' + str(self.version) + ']'
if self.release_group:
to_return += ' [GROUP: ' + self.release_group + ']'
to_return += ' [ABD: ' + str(self.is_air_by_date) + ']'
to_return += ' [ANIME: ' + str(self.is_anime) + ']'
to_return += ' [whichReg: ' + str(self.which_regex) + ']'
return to_return.encode('utf-8')
@property
def is_air_by_date(self):
if self.air_date:
return True
return False
@property
def is_anime(self):
if len(self.ab_episode_numbers):
return True
return False
class NameParserCache(object):
_previous_parsed = {}
_cache_size = 100
def add(self, name, parse_result):
self._previous_parsed[name] = parse_result
_current_cache_size = len(self._previous_parsed)
if _current_cache_size > self._cache_size:
for i in range(_current_cache_size - self._cache_size):
del self._previous_parsed[self._previous_parsed.keys()[0]]
def get(self, name):
if name in self._previous_parsed:
logger.log("Using cached parse result for: " + name, logger.DEBUG)
return self._previous_parsed[name]
name_parser_cache = NameParserCache()
class InvalidNameException(Exception):
"The given release name is not valid"
class InvalidShowException(Exception):
"The given show name is not valid"
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