430 lines
13 KiB
PHP
430 lines
13 KiB
PHP
<?php
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/**
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Core
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* @since CakePHP(tm) v 1.0.0.2363
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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App::uses('Hash', 'Utility');
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App::uses('ConfigReaderInterface', 'Configure');
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/**
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* Compatibility with 2.1, which expects Configure to load Set.
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*/
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App::uses('Set', 'Utility');
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/**
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* Configuration class. Used for managing runtime configuration information.
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*
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* Provides features for reading and writing to the runtime configuration, as well
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* as methods for loading additional configuration files or storing runtime configuration
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* for future use.
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*
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* @package Cake.Core
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* @link http://book.cakephp.org/2.0/en/development/configuration.html#configure-class
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*/
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class Configure {
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/**
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* Array of values currently stored in Configure.
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*
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* @var array
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*/
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protected static $_values = array(
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'debug' => 0
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);
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/**
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* Configured reader classes, used to load config files from resources
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*
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* @var array
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* @see Configure::load()
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*/
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protected static $_readers = array();
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/**
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* Initializes configure and runs the bootstrap process.
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* Bootstrapping includes the following steps:
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*
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* - Setup App array in Configure.
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* - Include app/Config/core.php.
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* - Configure core cache configurations.
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* - Load App cache files.
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* - Include app/Config/bootstrap.php.
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* - Setup error/exception handlers.
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*
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* @param boolean $boot
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* @return void
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*/
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public static function bootstrap($boot = true) {
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if ($boot) {
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self::write('App', array(
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'base' => false,
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'baseUrl' => false,
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'dir' => APP_DIR,
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'webroot' => WEBROOT_DIR,
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'www_root' => WWW_ROOT
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));
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if (!include APP . 'Config' . DS . 'core.php') {
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trigger_error(__d('cake_dev', "Can't find application core file. Please create %score.php, and make sure it is readable by PHP.", APP . 'Config' . DS), E_USER_ERROR);
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}
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App::$bootstrapping = false;
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App::init();
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App::build();
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$exception = array(
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'handler' => 'ErrorHandler::handleException',
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);
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$error = array(
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'handler' => 'ErrorHandler::handleError',
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'level' => E_ALL & ~E_DEPRECATED,
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);
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self::_setErrorHandlers($error, $exception);
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if (!include APP . 'Config' . DS . 'bootstrap.php') {
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trigger_error(__d('cake_dev', "Can't find application bootstrap file. Please create %sbootstrap.php, and make sure it is readable by PHP.", APP . 'Config' . DS), E_USER_ERROR);
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}
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restore_error_handler();
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self::_setErrorHandlers(
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self::$_values['Error'],
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self::$_values['Exception']
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);
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// Preload Debugger + String in case of E_STRICT errors when loading files.
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if (self::$_values['debug'] > 0) {
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class_exists('Debugger');
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class_exists('String');
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}
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}
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}
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/**
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* Used to store a dynamic variable in Configure.
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*
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* Usage:
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* {{{
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* Configure::write('One.key1', 'value of the Configure::One[key1]');
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* Configure::write(array('One.key1' => 'value of the Configure::One[key1]'));
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* Configure::write('One', array(
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* 'key1' => 'value of the Configure::One[key1]',
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* 'key2' => 'value of the Configure::One[key2]'
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* );
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*
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* Configure::write(array(
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* 'One.key1' => 'value of the Configure::One[key1]',
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* 'One.key2' => 'value of the Configure::One[key2]'
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* ));
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* }}}
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*
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* @link http://book.cakephp.org/2.0/en/development/configuration.html#Configure::write
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* @param array $config Name of var to write
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* @param mixed $value Value to set for var
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* @return boolean True if write was successful
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*/
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public static function write($config, $value = null) {
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if (!is_array($config)) {
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$config = array($config => $value);
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}
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foreach ($config as $name => $value) {
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self::$_values = Hash::insert(self::$_values, $name, $value);
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}
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if (isset($config['debug']) && function_exists('ini_set')) {
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if (self::$_values['debug']) {
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ini_set('display_errors', 1);
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} else {
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ini_set('display_errors', 0);
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}
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}
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return true;
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}
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/**
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* Used to read information stored in Configure. Its not
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* possible to store `null` values in Configure.
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*
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* Usage:
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* {{{
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* Configure::read('Name'); will return all values for Name
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* Configure::read('Name.key'); will return only the value of Configure::Name[key]
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* }}}
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*
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* @link http://book.cakephp.org/2.0/en/development/configuration.html#Configure::read
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* @param string $var Variable to obtain. Use '.' to access array elements.
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* @return mixed value stored in configure, or null.
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*/
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public static function read($var = null) {
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if ($var === null) {
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return self::$_values;
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}
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return Hash::get(self::$_values, $var);
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}
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/**
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* Returns true if given variable is set in Configure.
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*
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* @param string $var Variable name to check for
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* @return boolean True if variable is there
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*/
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public static function check($var = null) {
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if (empty($var)) {
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return false;
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}
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return Hash::get(self::$_values, $var) !== null;
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}
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/**
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* Used to delete a variable from Configure.
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*
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* Usage:
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* {{{
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* Configure::delete('Name'); will delete the entire Configure::Name
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* Configure::delete('Name.key'); will delete only the Configure::Name[key]
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* }}}
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*
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* @link http://book.cakephp.org/2.0/en/development/configuration.html#Configure::delete
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* @param string $var the var to be deleted
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* @return void
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*/
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public static function delete($var = null) {
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self::$_values = Hash::remove(self::$_values, $var);
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}
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/**
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* Add a new reader to Configure. Readers allow you to read configuration
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* files in various formats/storage locations. CakePHP comes with two built-in readers
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* PhpReader and IniReader. You can also implement your own reader classes in your application.
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*
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* To add a new reader to Configure:
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*
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* `Configure::config('ini', new IniReader());`
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*
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* @param string $name The name of the reader being configured. This alias is used later to
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* read values from a specific reader.
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* @param ConfigReaderInterface $reader The reader to append.
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* @return void
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*/
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public static function config($name, ConfigReaderInterface $reader) {
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self::$_readers[$name] = $reader;
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}
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/**
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* Gets the names of the configured reader objects.
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*
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* @param string $name
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* @return array Array of the configured reader objects.
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*/
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public static function configured($name = null) {
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if ($name) {
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return isset(self::$_readers[$name]);
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}
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return array_keys(self::$_readers);
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}
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/**
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* Remove a configured reader. This will unset the reader
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* and make any future attempts to use it cause an Exception.
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*
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* @param string $name Name of the reader to drop.
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* @return boolean Success
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*/
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public static function drop($name) {
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if (!isset(self::$_readers[$name])) {
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return false;
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}
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unset(self::$_readers[$name]);
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return true;
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}
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/**
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* Loads stored configuration information from a resource. You can add
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* config file resource readers with `Configure::config()`.
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*
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* Loaded configuration information will be merged with the current
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* runtime configuration. You can load configuration files from plugins
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* by preceding the filename with the plugin name.
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*
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* `Configure::load('Users.user', 'default')`
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*
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* Would load the 'user' config file using the default config reader. You can load
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* app config files by giving the name of the resource you want loaded.
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*
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* `Configure::load('setup', 'default');`
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*
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* If using `default` config and no reader has been configured for it yet,
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* one will be automatically created using PhpReader
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*
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* @link http://book.cakephp.org/2.0/en/development/configuration.html#Configure::load
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* @param string $key name of configuration resource to load.
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* @param string $config Name of the configured reader to use to read the resource identified by $key.
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* @param boolean $merge if config files should be merged instead of simply overridden
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* @return mixed false if file not found, void if load successful.
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* @throws ConfigureException Will throw any exceptions the reader raises.
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*/
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public static function load($key, $config = 'default', $merge = true) {
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$reader = self::_getReader($config);
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if (!$reader) {
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return false;
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}
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$values = $reader->read($key);
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if ($merge) {
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$keys = array_keys($values);
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foreach ($keys as $key) {
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if (($c = self::read($key)) && is_array($values[$key]) && is_array($c)) {
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$values[$key] = Hash::merge($c, $values[$key]);
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}
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}
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}
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return self::write($values);
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}
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/**
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* Dump data currently in Configure into $key. The serialization format
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* is decided by the config reader attached as $config. For example, if the
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* 'default' adapter is a PhpReader, the generated file will be a PHP
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* configuration file loadable by the PhpReader.
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*
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* ## Usage
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*
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* Given that the 'default' reader is an instance of PhpReader.
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* Save all data in Configure to the file `my_config.php`:
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*
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* `Configure::dump('my_config.php', 'default');`
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*
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* Save only the error handling configuration:
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*
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* `Configure::dump('error.php', 'default', array('Error', 'Exception');`
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*
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* @param string $key The identifier to create in the config adapter.
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* This could be a filename or a cache key depending on the adapter being used.
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* @param string $config The name of the configured adapter to dump data with.
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* @param array $keys The name of the top-level keys you want to dump.
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* This allows you save only some data stored in Configure.
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* @return boolean success
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* @throws ConfigureException if the adapter does not implement a `dump` method.
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*/
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public static function dump($key, $config = 'default', $keys = array()) {
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$reader = self::_getReader($config);
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if (!$reader) {
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throw new ConfigureException(__d('cake_dev', 'There is no "%s" adapter.', $config));
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}
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if (!method_exists($reader, 'dump')) {
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throw new ConfigureException(__d('cake_dev', 'The "%s" adapter, does not have a dump() method.', $config));
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}
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$values = self::$_values;
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if (!empty($keys) && is_array($keys)) {
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$values = array_intersect_key($values, array_flip($keys));
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}
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return (bool)$reader->dump($key, $values);
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}
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/**
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* Get the configured reader. Internally used by `Configure::load()` and `Configure::dump()`
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* Will create new PhpReader for default if not configured yet.
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*
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* @param string $config The name of the configured adapter
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* @return mixed Reader instance or false
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*/
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protected static function _getReader($config) {
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if (!isset(self::$_readers[$config])) {
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if ($config !== 'default') {
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return false;
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}
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App::uses('PhpReader', 'Configure');
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self::config($config, new PhpReader());
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}
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return self::$_readers[$config];
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}
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/**
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* Used to determine the current version of CakePHP.
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*
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* Usage `Configure::version();`
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*
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* @return string Current version of CakePHP
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*/
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public static function version() {
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if (!isset(self::$_values['Cake']['version'])) {
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require CAKE . 'Config' . DS . 'config.php';
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self::write($config);
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}
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return self::$_values['Cake']['version'];
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}
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/**
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* Used to write runtime configuration into Cache. Stored runtime configuration can be
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* restored using `Configure::restore()`. These methods can be used to enable configuration managers
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* frontends, or other GUI type interfaces for configuration.
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*
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* @param string $name The storage name for the saved configuration.
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* @param string $cacheConfig The cache configuration to save into. Defaults to 'default'
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* @param array $data Either an array of data to store, or leave empty to store all values.
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* @return boolean Success
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*/
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public static function store($name, $cacheConfig = 'default', $data = null) {
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if ($data === null) {
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$data = self::$_values;
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}
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return Cache::write($name, $data, $cacheConfig);
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}
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/**
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* Restores configuration data stored in the Cache into configure. Restored
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* values will overwrite existing ones.
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*
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* @param string $name Name of the stored config file to load.
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* @param string $cacheConfig Name of the Cache configuration to read from.
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* @return boolean Success.
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*/
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public static function restore($name, $cacheConfig = 'default') {
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$values = Cache::read($name, $cacheConfig);
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if ($values) {
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return self::write($values);
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}
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return false;
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}
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/**
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* Clear all values stored in Configure.
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*
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* @return boolean success.
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*/
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public static function clear() {
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self::$_values = array();
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return true;
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}
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/**
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* Set the error and exception handlers.
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*
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* @param array $error The Error handling configuration.
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* @param array $exception The exception handling configuration.
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* @return void
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*/
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protected static function _setErrorHandlers($error, $exception) {
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$level = -1;
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if (isset($error['level'])) {
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error_reporting($error['level']);
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$level = $error['level'];
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}
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if (!empty($error['handler'])) {
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set_error_handler($error['handler'], $level);
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}
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if (!empty($exception['handler'])) {
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set_exception_handler($exception['handler']);
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}
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}
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}
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