™.. DateTime::TimeZone::Local::Win32 - Online Linux Manual PageSection : 3
Updated : 2017-03-21
Source : perl v5.10.1
Note : User Contributed Perl Documentation
NAMEDateTime::TimeZone::Local::Win32 − Determine the local system's time zone on Windows
SYNOPSIS​ my $tz = DateTime::TimeZone−>new( name => 'local' ); ​ ​ my $tz = DateTime::TimeZone::Local−>TimeZone();
DESCRIPTIONThis module provides methods for determining the local time zone on a Windows platform.
HOW THE TIME ZONE IS DETERMINEDThis class tries the following methods of determining the local time zone: • ​$ENV{TZ} It checks $ENV{TZ} for a valid time zone name. • Windows Registry When using the registry, we look for the Windows time zone and use a mapping to translate this to an Olson time zone name. • Windows Vista and 2008 We look in ‟SYSTEM/CurrentControlSet/Control/TimeZoneInformation/” for a node named ‟/TimeZoneKeyName”. If this exists, we use this key to look up the Olson time zone name in our mapping. • Windows NT, Windows 2000, Windows XP, Windows 2003 Server We look in ‟SOFTWARE/Microsoft/Windows NT/CurrentVersion/Time Zones/” and loop through all of its sub keys. For each sub key, we compare the value of the key with ‟/Std” appended to the end to the value of ​‟SYSTEM/CurrentControlSet/Control/TimeZoneInformation/StandardName”. This gives us the English name of the Windows time zone, which we use to look up the Olson time zone name. • Windows 95, Windows 98, Windows Millenium Edition The algorithm is the same as for NT, but we loop through the sub keys of ‟SOFTWARE/Microsoft/Windows/CurrentVersion/Time Zones/”
AUTHORDave Rolsky, <autarch@urth.org>
COPYRIGHT & LICENSECopyright (c) 2003−2008 David Rolsky. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. 0
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