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SickRage
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SickRage/sickbeard/network_timezones.py

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# Author: Nic Wolfe <nic@wolfeden.ca>
# URL: http://code.google.com/p/sickbeard/
#
# This file is part of SickRage.
#
# SickRage 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.
#
# SickRage 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 SickRage. If not, see <http://www.gnu.org/licenses/>.
from lib.dateutil import tz
import lib.dateutil.zoneinfo
from sickbeard import db
from sickbeard import helpers
from sickbeard import logger
from sickbeard import encodingKludge as ek
from os.path import basename, join, isfile
import os
import re
import datetime
# regex to parse time (12/24 hour format)
time_regex = re.compile(r'(\d{1,2})(([:.](\d{2,2}))? ?([PA][. ]? ?M)|[:.](\d{2,2}))\b', flags=re.IGNORECASE)
am_regex = re.compile(r'(A[. ]? ?M)', flags=re.IGNORECASE)
pm_regex = re.compile(r'(P[. ]? ?M)', flags=re.IGNORECASE)
network_dict = None
sb_timezone = tz.tzlocal()
# helper to remove failed temp download
def _remove_zoneinfo_failed(filename):
try:
ek.ek(os.remove, filename)
except:
pass
# helper to remove old unneeded zoneinfo files
def _remove_old_zoneinfo():
if lib.dateutil.zoneinfo.ZONEINFOFILE is not None:
cur_zoneinfo = ek.ek(basename, lib.dateutil.zoneinfo.ZONEINFOFILE)
else:
return
cur_file = helpers.real_path(ek.ek(join, ek.ek(os.path.dirname, lib.dateutil.zoneinfo.__file__), cur_zoneinfo))
for (path, dirs, files) in ek.ek(os.walk,
helpers.real_path(ek.ek(os.path.dirname, lib.dateutil.zoneinfo.__file__))):
for filename in files:
if filename.endswith('.tar.gz'):
file_w_path = ek.ek(join, path, filename)
if file_w_path != cur_file and ek.ek(isfile, file_w_path):
try:
ek.ek(os.remove, file_w_path)
logger.log(u'Delete unneeded old zoneinfo File: %s' % file_w_path)
except:
logger.log(u'Unable to delete: %s' % file_w_path, logger.ERROR)
# update the dateutil zoneinfo
def _update_zoneinfo():
global sb_timezone
sb_timezone = tz.tzlocal()
# now check if the zoneinfo needs update
url_zv = 'https://raw.githubusercontent.com/Prinz23/sb_network_timezones/master/zoneinfo.txt'
url_data = helpers.getURL(url_zv)
if url_data is None:
# When urlData is None, trouble connecting to github
logger.log(u'Loading zoneinfo.txt failed, this can happen from time to time. Unable to get URL: %s' % url_zv,
logger.WARNING)
return
if lib.dateutil.zoneinfo.ZONEINFOFILE is not None:
cur_zoneinfo = ek.ek(basename, lib.dateutil.zoneinfo.ZONEINFOFILE)
else:
cur_zoneinfo = None
(new_zoneinfo, zoneinfo_md5) = url_data.decode('utf-8').strip().rsplit(u' ')
if (cur_zoneinfo is not None) and (new_zoneinfo == cur_zoneinfo):
return
# now load the new zoneinfo
url_tar = u'https://raw.githubusercontent.com/Prinz23/sb_network_timezones/master/%s' % new_zoneinfo
zonefile = helpers.real_path(ek.ek(join, ek.ek(os.path.dirname, lib.dateutil.zoneinfo.__file__), new_zoneinfo))
zonefile_tmp = re.sub(r'\.tar\.gz$', '.tmp', zonefile)
if ek.ek(os.path.exists, zonefile_tmp):
try:
ek.ek(os.remove, zonefile_tmp)
except:
logger.log(u'Unable to delete: %s' % zonefile_tmp, logger.ERROR)
return
if not helpers.download_file(url_tar, zonefile_tmp):
return
if not ek.ek(os.path.exists, zonefile_tmp):
logger.log(u'Download of %s failed.' % zonefile_tmp, logger.ERROR)
return
new_hash = str(helpers.md5_for_file(zonefile_tmp))
if zoneinfo_md5.upper() == new_hash.upper():
logger.log(u'Updating timezone info with new one: %s' % new_zoneinfo, logger.MESSAGE)
try:
# remove the old zoneinfo file
if cur_zoneinfo is not None:
old_file = helpers.real_path(
ek.ek(join, ek.ek(os.path.dirname, lib.dateutil.zoneinfo.__file__), cur_zoneinfo))
if ek.ek(os.path.exists, old_file):
ek.ek(os.remove, old_file)
# rename downloaded file
ek.ek(os.rename, zonefile_tmp, zonefile)
# load the new zoneinfo
reload(lib.dateutil.zoneinfo)
sb_timezone = tz.tzlocal()
except:
_remove_zoneinfo_failed(zonefile_tmp)
return
else:
_remove_zoneinfo_failed(zonefile_tmp)
logger.log(u'MD5 hash does not match: %s File: %s' % (zoneinfo_md5.upper(), new_hash.upper()), logger.ERROR)
return
# update the network timezone table
def update_network_dict():
_remove_old_zoneinfo()
_update_zoneinfo()
d = {}
# network timezones are stored on github pages
url = 'https://raw.githubusercontent.com/Prinz23/sb_network_timezones/master/network_timezones.txt'
url_data = helpers.getURL(url)
if url_data is None:
# When urlData is None, trouble connecting to github
logger.log(u'Updating network timezones failed, this can happen from time to time. URL: %s' % url, logger.WARNING)
load_network_dict()
return
try:
for line in url_data.splitlines():
(key, val) = line.decode('utf-8').strip().rsplit(u':', 1)
if key is None or val is None:
continue
d[key] = val
except (IOError, OSError):
pass
my_db = db.DBConnection('cache.db')
# load current network timezones
old_d = dict(my_db.select('SELECT * FROM network_timezones'))
# list of sql commands to update the network_timezones table
cl = []
for cur_d, cur_t in d.iteritems():
h_k = old_d.has_key(cur_d)
if h_k and cur_t != old_d[cur_d]:
# update old record
cl.append(
['UPDATE network_timezones SET network_name=?, timezone=? WHERE network_name=?', [cur_d, cur_t, cur_d]])
elif not h_k:
# add new record
cl.append(['INSERT INTO network_timezones (network_name, timezone) VALUES (?,?)', [cur_d, cur_t]])
if h_k:
del old_d[cur_d]
# remove deleted records
if len(old_d) > 0:
old_items = list(va for va in old_d)
cl.append(['DELETE FROM network_timezones WHERE network_name IN (%s)' % ','.join(['?'] * len(old_items)), old_items])
# change all network timezone infos at once (much faster)
if len(cl) > 0:
my_db.mass_action(cl)
load_network_dict()
# load network timezones from db into dict
def load_network_dict():
try:
my_db = db.DBConnection('cache.db')
cur_network_list = my_db.select('SELECT * FROM network_timezones')
if cur_network_list is None or len(cur_network_list) < 1:
update_network_dict()
cur_network_list = my_db.select('SELECT * FROM network_timezones')
d = dict(cur_network_list)
except:
d = {}
global network_dict
network_dict = d
# get timezone of a network or return default timezone
def get_network_timezone(network, network_dict):
if network is None:
return sb_timezone
try:
if lib.dateutil.zoneinfo.ZONEINFOFILE is not None:
try:
n_t = tz.gettz(network_dict[network])
except:
return sb_timezone
if n_t is not None:
return n_t
else:
return sb_timezone
else:
return sb_timezone
except:
return sb_timezone
# parse date and time string into local time
def parse_date_time(d, t, network):
if network_dict is None:
load_network_dict()
mo = time_regex.search(t)
if mo is not None and len(mo.groups()) >= 5:
if mo.group(5) is not None:
try:
hr = helpers.tryInt(mo.group(1))
m = helpers.tryInt(mo.group(4))
ap = mo.group(5)
# convert am/pm to 24 hour clock
if ap is not None:
if pm_regex.search(ap) is not None and hr != 12:
hr += 12
elif am_regex.search(ap) is not None and hr == 12:
hr -= 12
except:
hr = 0
m = 0
else:
try:
hr = helpers.tryInt(mo.group(1))
m = helpers.tryInt(mo.group(6))
except:
hr = 0
m = 0
else:
hr = 0
m = 0
if hr < 0 or hr > 23 or m < 0 or m > 59:
hr = 0
m = 0
te = datetime.datetime.fromordinal(helpers.tryInt(d))
try:
foreign_timezone = get_network_timezone(network, network_dict)
foreign_naive = datetime.datetime(te.year, te.month, te.day, hr, m, tzinfo=foreign_timezone)
return foreign_naive
except:
return datetime.datetime(te.year, te.month, te.day, hr, m, tzinfo=sb_timezone)
def test_timeformat(t):
mo = time_regex.search(t)
if mo is None or len(mo.groups()) < 2:
return False
else:
return True
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