cakephp2-php8/lib/Cake/Core/Configure.php
mark_story 89d5449270 In CLI mode default the error handlers to Console flavors.
In the somewhat rare case where an error or exception occurs during
application bootstrap, we should not emit HTML to the stdout.

Refs #7661
2015-11-09 21:47:16 -05:00

480 lines
14 KiB
PHP

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