cakephp2-php8/cake/libs/configure.php
mark_story 44c080d5ad Making all core classes throw CakeException subclasses, this allows developers to catch framework exceptions with one catch.
Adding package specific exceptions.
Replacing generic exceptions in the codebase with CakeException + package exceptions.
2010-12-11 19:26:10 -05:00

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PHP

<?php
/**
* Configure class
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs
* @since CakePHP(tm) v 1.0.0.2363
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* 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
* @subpackage cake.cake.libs
* @link http://book.cakephp.org/view/924/The-Configuration-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 $_readers = array();
/**
* Initializes configure and runs the bootstrap process.
* Bootstrapping includes the following steps:
*
* - Setup App array in Configure.
* - Include app/config/core.php.
* - Configure core cache configurations.
* - Load App cache files.
* - Include app/config/bootstrap.php.
* - Setup error/exception handlers.
*
* @return void
*/
public static function bootstrap($boot = true) {
if ($boot) {
self::write('App', array(
'base' => false,
'baseUrl' => false,
'dir' => APP_DIR,
'webroot' => WEBROOT_DIR,
'www_root' => WWW_ROOT
));
if (!include(CONFIGS . 'core.php')) {
trigger_error(__("Can't find application core file. Please create %score.php, and make sure it is readable by PHP.", CONFIGS), E_USER_ERROR);
}
if (empty(self::$_values['Cache']['disable'])) {
$cache = Cache::config('default');
if (empty($cache['settings'])) {
trigger_error(__('Cache not configured properly. Please check Cache::config(); in APP/config/core.php'), E_USER_WARNING);
$cache = Cache::config('default', array('engine' => 'File'));
}
$path = $prefix = $duration = null;
if (!empty($cache['settings']['path'])) {
$path = realpath($cache['settings']['path']);
} else {
$prefix = $cache['settings']['prefix'];
}
if (self::$_values['debug'] >= 1) {
$duration = '+10 seconds';
} else {
$duration = '+999 days';
}
if (Cache::config('_cake_core_') === false) {
Cache::config('_cake_core_', array_merge((array)$cache['settings'], array(
'prefix' => $prefix . 'cake_core_', 'path' => $path . DS . 'persistent' . DS,
'serialize' => true, 'duration' => $duration
)));
}
if (Cache::config('_cake_model_') === false) {
Cache::config('_cake_model_', array_merge((array)$cache['settings'], array(
'prefix' => $prefix . 'cake_model_', 'path' => $path . DS . 'models' . DS,
'serialize' => true, 'duration' => $duration
)));
}
}
App::init();
App::build();
if (!include(CONFIGS . 'bootstrap.php')) {
trigger_error(__("Can't find application bootstrap file. Please create %sbootstrap.php, and make sure it is readable by PHP.", CONFIGS), E_USER_ERROR);
}
$level = -1;
if (isset(self::$_values['Error']['level'])) {
error_reporting(self::$_values['Error']['level']);
$level = self::$_values['Error']['level'];
}
if (!empty(self::$_values['Error']['handler'])) {
set_error_handler(self::$_values['Error']['handler'], $level);
}
if (!empty(self::$_values['Exception']['handler'])) {
set_exception_handler(self::$_values['Exception']['handler']);
}
}
}
/**
* 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]'
* ));
* }}}
*
* @link http://book.cakephp.org/view/926/write
* @param array $config Name of var to write
* @param mixed $value Value to set for var
* @return boolean True if write was successful
*/
public static function write($config, $value = null) {
if (!is_array($config)) {
$config = array($config => $value);
}
foreach ($config as $name => $value) {
if (strpos($name, '.') === false) {
self::$_values[$name] = $value;
} else {
$names = explode('.', $name, 4);
switch (count($names)) {
case 2:
self::$_values[$names[0]][$names[1]] = $value;
break;
case 3:
self::$_values[$names[0]][$names[1]][$names[2]] = $value;
break;
case 4:
$names = explode('.', $name, 2);
if (!isset(self::$_values[$names[0]])) {
self::$_values[$names[0]] = array();
}
self::$_values[$names[0]] = Set::insert(self::$_values[$names[0]], $names[1], $value);
break;
}
}
}
if (isset($config['debug']) && function_exists('ini_set')) {
if (self::$_values['debug']) {
ini_set('display_errors', 1);
} else {
ini_set('display_errors', 0);
}
}
return true;
}
/**
* Used to read information stored in Configure. Its 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]
* }}}
*
* @link http://book.cakephp.org/view/927/read
* @param string $var Variable to obtain. Use '.' to access array elements.
* @return mixed value stored in configure, or null.
*/
public static function read($var = null) {
if ($var === null) {
return self::$_values;
}
if (isset(self::$_values[$var])) {
return self::$_values[$var];
}
if (strpos($var, '.') !== false) {
$names = explode('.', $var, 3);
$var = $names[0];
}
if (!isset(self::$_values[$var])) {
return null;
}
switch (count($names)) {
case 2:
if (isset(self::$_values[$var][$names[1]])) {
return self::$_values[$var][$names[1]];
}
break;
case 3:
if (isset(self::$_values[$var][$names[1]][$names[2]])) {
return self::$_values[$var][$names[1]][$names[2]];
}
if (!isset(self::$_values[$var][$names[1]])) {
return null;
}
return Set::classicExtract(self::$_values[$var][$names[1]], $names[2]);
break;
}
return 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]
* }}}
*
* @link http://book.cakephp.org/view/928/delete
* @param string $var the var to be deleted
* @return void
*/
public static function delete($var = null) {
if (strpos($var, '.') === false) {
unset(self::$_values[$var]);
return;
}
$names = explode('.', $var, 2);
self::$_values[$names[0]] = Set::remove(self::$_values[$names[0]], $names[1]);
}
/**
* 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 $reader) {
self::$_readers[$name] = $reader;
}
/**
* Gets the names of the configured reader objects.
*
* @return array Array of the configured reader objects.
*/
public static function configured($name = null) {
if ($name) {
return isset(self::$_readers[$name]);
}
return array_keys(self::$_readers);
}
/**
* Remove a configured reader. This will unset the reader
* and make any future attempts to use it cause an Exception.
*
* @param string $name Name of the reader to drop.
* @return boolean Success
*/
public static function drop($name) {
if (!isset(self::$_readers[$name])) {
return false;
}
unset(self::$_readers[$name]);
return true;
}
/**
* Loads stored configuration information from a resource. You can add
* config file resource readers with `Configure::config()`.
*
* Loaded configuration infomration will be merged with the current
* runtime configuration. You can load configuration files from plugins
* by preceeding 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');`
*
* @link http://book.cakephp.org/view/929/load
* @param string $key name of configuration resource to load.
* @param string $config Name of the configured reader to use to read the resource identfied by $key.
* @return mixed false if file not found, void if load successful.
* @throws ConfigureException Will throw any exceptions the reader raises.
*/
public static function load($key, $config = 'default') {
if (!isset(self::$_readers[$config])) {
return false;
}
$values = self::$_readers[$config]->read($key);
return self::write($values);
}
/**
* Used to determine the current version of CakePHP.
*
* Usage `Configure::version();`
*
* @link http://book.cakephp.org/view/930/version
* @return string Current version of CakePHP
*/
public static function version() {
if (!isset(self::$_values['Cake']['version'])) {
require(CORE_PATH . 'cake' . DS . 'config' . DS . 'config.php');
self::write($config);
}
return self::$_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 $data Either an array of data to store, or leave empty to store all values.
* @return boolean Success
*/
public static function store($name, $cacheConfig = 'default', $data = null) {
if ($data === null) {
$data = self::$_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 $cacheConfig Name of the Cache configuration to read from.
* @return boolean Success.
*/
public static function restore($name, $cacheConfig = 'default') {
$values = Cache::read($name, $cacheConfig);
if ($values) {
return self::write($values);
}
return false;
}
}
/**
* An interface for creating objects compatible with Configure::load()
*
* @package cake.libs
*/
interface ConfigReaderInterface {
/**
* Read method is used for reading configuration information from sources.
* These sources can either be static resources like files, or dynamic ones like
* a database, or other datasource.
*
* @param string $key
* @return array An array of data to merge into the runtime configuration
*/
function read($key);
}