Make all datetime-objects timezone-aware

Because the tool is using utc-timestamps everywhere, this emphasizes
this fact (by default) in the output.
If you don't want timezones behind each datetime in your output, just
remove the "%Z" from the `datetimeformat`.

Fix #9

tsstats/log.py

@@ -8,6 +8,7 @@ from datetime import datetime
 from glob import glob
 from os.path import basename
 
+from tsstats.utils import tz_aware_datime
 from tsstats.client import Client, Clients
 
 re_log_filename = re.compile(r'ts3server_(?P<date>\d{4}-\d\d-\d\d)'
@@ -133,8 +134,8 @@ def _parse_details(log_path, ident_map=None, clients=None, online_dc=True):
             logger.debug('No match: "%s"', line)
             continue
         match = match.groupdict()
-        logdatetime = datetime.strptime(match['timestamp'],
+        logdatetime = tz_aware_datime(datetime.strptime(match['timestamp'],
-                                        log_timestamp_format)
+                                      log_timestamp_format))
         message = match['message']
         if message.startswith('client'):
             match = re_dis_connect.match(message)
@@ -173,7 +174,7 @@ def _parse_details(log_path, ident_map=None, clients=None, online_dc=True):
             ]
     if online_dc:
         def _reconnect(client):
-            client.disconnect(datetime.utcnow())
+            client.disconnect(tz_aware_datime(datetime.utcnow()))
             client.connected += 1
         [_reconnect(client) for client in clients if client.connected]
     logger.debug('Finished parsing of %s', log_file.name)

tsstats/template.py

@@ -8,7 +8,9 @@ from os.path import dirname, join
 from jinja2 import ChoiceLoader, Environment, FileSystemLoader, PackageLoader
 
 from tsstats.log import Server
-from tsstats.utils import filter_threshold, seconds_to_text, sort_clients
+from tsstats.utils import (
+    filter_threshold, seconds_to_text, sort_clients, tz_aware_datime
+)
 
 logger = logging.getLogger('tsstats')
 
@@ -104,6 +106,6 @@ def render_servers(servers, output, title='TeamspeakStats',
     logger.debug('Rendering template %s', template)
     template.stream(title=title, servers=prepared_servers,
                     debug=logger.level <= logging.DEBUG,
-                    creation_time=datetime.utcnow())\
+                    creation_time=tz_aware_datime(datetime.utcnow()))\
         .dump(output, encoding='utf-8')
     logger.debug('Wrote rendered template to %s', output)

tsstats/utils.py

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+import datetime
 
 
 def sort_clients(clients, key_l):
@@ -49,3 +50,31 @@ def filter_threshold(clients, threshold):
     :rtype: list
     '''
     return list(filter(lambda c: c[1] > threshold, clients))
+
+
+class UTC(datetime.tzinfo):
+    '''
+    Reimplementation of `timezone.utc` for Python2-Compatibility
+    '''
+
+    def utcoffset(self, dt):
+        return datetime.timedelta(0)
+
+    def dst(self, dt):
+        return datetime.timedelta(0)
+
+    def tzname(self, dt):
+        return 'UTC'
+
+
+def tz_aware_datime(datetime, timezone=UTC()):
+    '''
+    Make `datetime` aware of it's timezone (UTC by default)
+
+    :param datetime: Target datetime
+    :param timezone: Target timezone
+
+    :type datetime: datetime.datetime
+    :type timezone: datetime.timezone
+    '''
+    return datetime.replace(tzinfo=timezone)