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<?php defined('SYSPATH') OR die('No direct script access.'); |
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/** |
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* Core class that all fields must extend |
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* |
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* @package Jam |
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* @category Fields |
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* @author Ivan Kerin |
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* @copyright (c) 2011-2012 Despark Ltd. |
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* @license http://www.opensource.org/licenses/isc-license.txt |
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*/ |
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abstract class Kohana_Jam_Timezone { |
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const DEFAULT_TIMEZONE = 'default_timezone'; |
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const MASTER_TIMEZONE = 'master_timezone'; |
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const USER_TIMEZONE = 'user_timezone'; |
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protected static $_instance; |
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public static function instance() |
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{ |
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if ( ! Jam_Timezone::$_instance) |
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{ |
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Jam_Timezone::$_instance = new Jam_Timezone(); |
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} |
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return Jam_Timezone::$_instance; |
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} |
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public static function shift($value, DateTimeZone $timezone_from, DateTimeZone $timezone_to) |
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{ |
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$time = new DateTime(); |
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$time->setTimestamp($value); |
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return $value + $timezone_to->getOffset($time) - $timezone_from->getOffset($time); |
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} |
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protected $_user_timezone = NULL; |
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protected $_master_timezone = NULL; |
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protected $_default_timezone = NULL; |
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public function master_timezone($timezone = NULL) |
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{ |
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if ($timezone !== NULL) |
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{ |
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$this->_master_timezone = new DateTimeZone($timezone); |
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return $this; |
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} |
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if ( ! $this->_master_timezone) |
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{ |
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$this->_master_timezone = new DateTimeZone('UTC'); |
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} |
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return $this->_master_timezone; |
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} |
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public function default_timezone($timezone = NULL) |
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{ |
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if ($timezone !== NULL) |
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{ |
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$this->_default_timezone = new DateTimeZone($timezone); |
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return $this; |
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} |
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if ( ! $this->_default_timezone) |
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{ |
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$this->_default_timezone = new DateTimeZone(date_default_timezone_get()); |
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} |
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return $this->_default_timezone; |
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} |
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public function user_timezone($timezone = NULL) |
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{ |
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if ($timezone !== NULL) |
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{ |
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$this->_user_timezone = new DateTimeZone($timezone); |
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return $this; |
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} |
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return $this->_user_timezone; |
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} |
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public function is_active() |
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{ |
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return $this->_user_timezone !== NULL; |
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} |
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public function date($format, $time = NULL) |
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{ |
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if ( ! $this->is_active()) |
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return ($time !== NULL) ? date($format, $time) : date($format); |
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$time = ($time !== NULL) ? $time : time(); |
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$time = Jam_Timezone::shift($time, $this->default_timezone(), $this->master_timezone()); |
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return date($format, $time); |
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} |
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public function time() |
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{ |
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if ( ! $this->is_active()) |
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return time(); |
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return Jam_Timezone::shift(time(), $this->default_timezone(), $this->master_timezone()); |
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} |
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public function strtotime($time_string) |
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{ |
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if ( ! $this->is_active()) |
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return strtotime($time_string); |
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return Jam_Timezone::shift(strtotime($time_string), $this->default_timezone(), $this->master_timezone()); |
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} |
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public function convert($value, $from, $to) |
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{ |
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if ( ! $this->is_active()) |
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return $value; |
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return Jam_Timezone::shift($value, $this->$from(), $this->$to()); |
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} |
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public function to_db($value, $from = 'user_timezone') |
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{ |
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if ( ! $this->is_active()) |
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return $value; |
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if ( ! is_numeric($value)) |
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{ |
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$value = strtotime($value); |
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} |
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$value = $this->convert($value, $from, Jam_Timezone::MASTER_TIMEZONE); |
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return date('Y-m-d H:i:s', $value); |
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} |
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} // End Kohana_Jam_Field |
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This check looks for access to properties that are not accessible from the current context.
If you need to make a property accessible to another context you can either raise its visibility level or provide an accessible getter in the defining class.