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<?php |
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/** |
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* Update the upgrader |
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* |
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* @package Stencil |
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* @subpackage Upgrader |
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*/ |
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/** |
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* Class Stencil_Upgrader |
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*/ |
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class Stencil_Upgrader { |
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/** |
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* Check for upgrades once a day. |
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*/ |
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const DAY_TIMESTAMP = 86400; // 60*60*24 = one da |
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/** |
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* Packages that can be upgraded |
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* |
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* @var array |
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*/ |
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protected $upgrades = array(); |
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/** |
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* Installables instance. |
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* |
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* @var Stencil_Installables |
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*/ |
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protected $installables; |
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/** |
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* * Transient name to use for periodical upgrade checks. |
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*/ |
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const TRANSIENT_NAME = 'stencil_upgrader_upgrader:last_check_timestamp'; |
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/** |
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* Stencil_Upgrader constructor. |
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*/ |
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public function __construct() { |
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// Periodically check for upgrades. |
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$option_name = $this->get_option_name(); |
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$timeout = $this->get_upgrade_timeout(); |
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$this->installables = new Stencil_Installables(); |
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// Get saved information. |
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$info = get_option( $option_name ); |
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if ( false !== $info ) { |
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$this->upgrades = $info['upgrades']; |
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} |
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// Check if we need to read version info. |
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if ( false === $info || $info['last_check_timestamp'] + $timeout < time() ) { |
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$this->check_for_upgrades(); |
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$this->save_upgrade_information(); |
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} |
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} |
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/** |
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* Get transient name to use. |
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* |
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* @return string |
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*/ |
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protected function get_option_name() { |
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return self::TRANSIENT_NAME; |
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} |
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/** |
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* Get the periodically check timeout. |
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* |
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* @return int |
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*/ |
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protected function get_upgrade_timeout() { |
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return self::DAY_TIMESTAMP; |
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} |
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/** |
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* Get available upgrades. |
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* |
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* @return array |
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*/ |
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public function get_upgrades() { |
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return $this->upgrades; |
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} |
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/** |
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* Check for all upgrades |
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* |
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* @return bool |
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*/ |
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public function check_for_upgrades() { |
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// Don't check twice. |
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static $checked = false; |
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if ( false !== $checked ) { |
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return false; |
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} |
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$checked = true; |
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$this->upgrades = $this->installables->get_upgradable(); |
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return true; |
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} |
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/** |
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* Upgrade packages |
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*/ |
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public function upgrade_all() { |
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if ( empty( $this->upgrades ) ) { |
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return; |
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} |
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foreach ( $this->upgrades as $installable ) { |
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$installable->upgrade(); |
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} |
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} |
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/** |
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* Save upgrade information to the database. |
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*/ |
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private function save_upgrade_information() { |
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$option_name = $this->get_option_name(); |
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$info = array( |
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'last_check_timestamp' => time(), |
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'upgrades' => $this->upgrades, |
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); |
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update_option( $option_name, $info ); |
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} |
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} |
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moorscode /
stencil
