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datetime::timezone::local::unix(3) [osx man page]

DateTime::TimeZone::Local::Unix(3)			User Contributed Perl Documentation			DateTime::TimeZone::Local::Unix(3)

NAME
DateTime::TimeZone::Local::Unix - Determine the local system's time zone on Unix VERSION
version 1.51 SYNOPSIS
my $tz = DateTime::TimeZone->new( name => 'local' ); my $tz = DateTime::TimeZone::Local->TimeZone(); DESCRIPTION
This module provides methods for determining the local time zone on a Unix platform. HOW THE TIME ZONE IS DETERMINED
This class tries the following methods of determining the local time zone: o $ENV{TZ} It checks $ENV{TZ} for a valid time zone name. o /etc/localtime If this file is a symlink to an Olson database time zone file (usually in /usr/share/zoneinfo) then it uses the target file's path name to determine the time zone name. For example, if the path is /usr/share/zoneinfo/America/Chicago, the time zone is "America/Chicago". Some systems just copy the relevant file to /etc/localtime instead of making a symlink. In this case, we look in /usr/share/zoneinfo for a file that has the same size and content as /etc/localtime to determine the local time zone. o /etc/timezone If this file exists, it is read and its contents are used as a time zone name. o /etc/TIMEZONE If this file exists, it is opened and we look for a line starting like "TZ = ...". If this is found, it should indicate a time zone name. o /etc/sysconfig/clock If this file exists, it is opened and we look for a line starting like "TIMEZONE = ..." or "ZONE = ...". If this is found, it should indicate a time zone name. o /etc/default/init If this file exists, it is opened and we look for a line starting like "TZ=...". If this is found, it should indicate a time zone name. AUTHOR
Dave Rolsky <autarch@urth.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Dave Rolsky. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.16.2 2012-10-17 DateTime::TimeZone::Local::Unix(3)

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DateTime::TimeZone::Local(3)				User Contributed Perl Documentation			      DateTime::TimeZone::Local(3)

NAME
DateTime::TimeZone::Local - Determine the local system's time zone VERSION
version 1.63 SYNOPSIS
my $tz = DateTime::TimeZone->new( name => 'local' ); my $tz = DateTime::TimeZone::Local->TimeZone(); DESCRIPTION
This module provides an interface for determining the local system's time zone. Most of the functionality for doing this is in OS-specific subclasses. USAGE
This class provides the following methods: DateTime::TimeZone::Local->TimeZone() This attempts to load an appropriate subclass and asks it to find the local time zone. This method is called by when you pass "local" as the time zone name to "DateTime:TimeZone->new()". If your OS is not explicitly handled, you can create a module with a name of the form "DateTime::TimeZone::Local::$^O". If it exists, it will be used instead of falling back to the Unix subclass. If no OS-specific module exists, we fall back to using the Unix subclass. See DateTime::TimeZone::Local::Unix, DateTime::TimeZone::Local::Win32, and DateTime::TimeZone::Local::VMS for OS-specific details. SUBCLASSING
If you want to make a new OS-specific subclass, there are several methods provided by this module you should know about. $class->Methods() This method should be provided by your class. It should provide a list of methods that will be called to try to determine the local time zone. Each of these methods is expected to return a new "DateTime::TimeZone" object if it determines the time zone. $class->FromEnv() This method tries to find a valid time zone in an %ENV value. It calls "$class->EnvVars()" to determine which keys to look at. To use this from a subclass, simply return "FromEnv" as one of the items from "$class->Methods()". $class->EnvVars() This method should be provided by your subclass. It should return a list of env vars to be checked by "$class->FromEnv()". $class->_IsValidName($name) Given a possible time zone name, this returns a boolean indicating whether or not the name looks valid. It always return false for "local" in order to avoid infinite loops. EXAMPLE SUBCLASS
Here is a simple example subclass: package DateTime::TimeZone::SomeOS; use strict; use warnings; use base 'DateTime::TimeZone::Local'; sub Methods { qw( FromEnv FromEther ) } sub EnvVars { qw( TZ ZONE ) } sub FromEther { my $class = shift; ... } AUTHOR
Dave Rolsky <autarch@urth.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2013 by Dave Rolsky. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.16.3 2013-10-28 DateTime::TimeZone::Local(3)
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