[Pymoul-svn] SF.net SVN: pymoul: [32] pymoul/trunk/src/moul/time

[<ti...@us...>]

Revision: 32
          http://pymoul.svn.sourceforge.net/pymoul/?rev=32&view=rev
Author:   tiran
Date:     2007-01-16 03:13:44 -0800 (Tue, 16 Jan 2007)

Log Message:
-----------
* Created CavernTime calculator class

Modified Paths:
--------------
    pymoul/trunk/src/moul/time/cavern.py
    pymoul/trunk/src/moul/time/tests/__init__.py

Added Paths:
-----------
    pymoul/trunk/src/moul/time/tests/test_cavern.py

Modified: pymoul/trunk/src/moul/time/cavern.py
===================================================================
--- pymoul/trunk/src/moul/time/cavern.py	2007-01-16 00:03:34 UTC (rev 31)
+++ pymoul/trunk/src/moul/time/cavern.py	2007-01-16 11:13:44 UTC (rev 32)
@@ -56,3 +56,107 @@
 CAVERN_TZ_NAME = 'US/Mountain' # MDT / MST
 CAVERN_TZ = timezone(CAVERN_TZ_NAME)
 
+def diffTD(td1, td2):
+    """Difference of two timedelta objects -> int
+    
+    >>> type(diffTD(timedelta(0, 3600), timedelta(0, -3600)))
+    <type 'int'>
+    >>> diffTD(timedelta(0, 3600), timedelta(0, -3600))
+    7200
+    >>> diffTD(timedelta(0, 3600), timedelta(0, 3600))
+    0
+    >>> diffTD(timedelta(0, -3600), timedelta(0, -3600))
+    0
+    >>> diffTD(timedelta(0, -7200), timedelta(0, -3600))
+    -3600
+    >>> diffTD(timedelta(0, -3600), timedelta(0, -7200))
+    3600
+    >>> diffTD(timedelta(0, 3600, 1), timedelta(0, -3600))
+    Traceback (most recent call last):
+    ...
+    ValueError: Can't handle microseconds
+    """
+    if td1.microseconds or td2.microseconds:
+        raise ValueError("Can't handle microseconds")
+    return (td1.seconds + 86400 * td1.days) - (td2.seconds + 86400 * td2.days)
+
+def td2int(td):
+    """timedelta to int
+    >>> td2int(timedelta(0, 3600))
+    3600
+    >>> td2int(timedelta(0, -3600))
+    -3600
+    """
+    return td.seconds + 86400 * td.days
+    
+class CavernTime(object):
+    """Cavern time calculator
+    
+    Calculates the cavern time and local time based on a given local time
+    zone. Call a CavernTime object:
+    
+    utc
+        datetime -- Current time in UTC as <datetime> object
+    cavern
+        datetime -- Current time in cavern TZ as <datetime> object
+        tz -- Cavern time zone object
+        utcoffset -- (hours, fraction) offset from UTC
+    cavern
+        datetime -- Current time in local TZ as <datetime> object
+        tz -- Local time zone object
+        utcoffset -- (hours, fraction) offset from UTC    
+    
+    >>> ct = CavernTime(local="Europe/Berlin")
+    >>> result = ct()
+    >>> 'utc' in result, 'local' in result, 'cavern' in result
+    (True, True, True)
+    >>> coff = result['cavern']['utcoffset']
+    >>> coff == (-7, 0.0) or coff == (-8, 0.0) or coff
+    True
+    >>> loff = result['local']['utcoffset']
+    >>> loff == (1, 0.0) or loff == (2, 0.0) or loff
+    True
+    """
+    _timezones = TIMEZONE_NAMES
+    _cavern = CAVERN_TZ
+    _local = None
+    
+    def __init__(self, local):
+        self.setLocal(local)
+    
+    def setLocal(self, local):
+        """Set local time zone
+        """
+        self._local = timezone(local)
+        
+    @property
+    def timezones(self):
+        """Available time zones as strings
+        """
+        return self._timezones
+    
+    @staticmethod
+    def _utcnow():
+        """Get current time in UTC
+        """
+        return UTC.localize(datetime.utcnow())
+
+    @staticmethod
+    def _normalize(tz, utc_dt=None):
+        """Normalize a datetime object with UTC tz using another tz
+        """
+        if utc_dt is None:
+            utc_dt = self._utcnow()
+        return tz.normalize(utc_dt.astimezone(tz))
+    
+    def __call__(self):
+        now = self._utcnow()
+        result = {}
+        for id, tz in (('cavern', self._cavern), ('local', self._local)):
+            info = result.setdefault(id, {})
+            utcoffset = td2int(tz.utcoffset(now))
+            info['tz'] = tz
+            info['utcoffset'] = int(utcoffset/3600), float((utcoffset%3600)/3600.0)
+            info['datetime'] = self._normalize(tz, now)
+        result['utc'] = {'datetime' : now}
+        return result

Modified: pymoul/trunk/src/moul/time/tests/__init__.py
===================================================================
--- pymoul/trunk/src/moul/time/tests/__init__.py	2007-01-16 00:03:34 UTC (rev 31)
+++ pymoul/trunk/src/moul/time/tests/__init__.py	2007-01-16 11:13:44 UTC (rev 32)
@@ -1,2 +1,2 @@
-# testing package
-
+# testing package
+

Added: pymoul/trunk/src/moul/time/tests/test_cavern.py
===================================================================
--- pymoul/trunk/src/moul/time/tests/test_cavern.py	                        (rev 0)
+++ pymoul/trunk/src/moul/time/tests/test_cavern.py	2007-01-16 11:13:44 UTC (rev 32)
@@ -0,0 +1,30 @@
+# pyMoul - Python interface to Myst Online URU Live
+# Copyright (C) 2007 Christian Heimes <christian (at) cheimes (dot) de>
+
+# This program 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 2 of the License, or (at your
+# option) any later version.
+# 
+# This program 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, write to the Free Software Foundation, Inc., 59
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+"""moul.time.cavern unit tests
+"""
+import os
+import unittest
+from doctest import DocTestSuite
+
+def test_suite():
+    return unittest.TestSuite((
+        DocTestSuite('moul.time.cavern'),
+        ))
+
+if __name__ == '__main__':
+    unittest.main(defaultTest="test_suite")


Property changes on: pymoul/trunk/src/moul/time/tests/test_cavern.py
___________________________________________________________________
Name: svn:eol-style
   + native


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