Current File : //proc/985914/root/www/varak.net/wiki.varak.net/includes/config/ConfigRepository.php
<?php
/**
* Copyright 2016
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Config;
use MediaWiki\Services\SalvageableService;
use Wikimedia\Assert\Assert;
/**
* Object which holds currently registered configuration options.
*
* @since 1.32
*/
class ConfigRepository implements SalvageableService {
/** @var \ConfigFactory */
private $configFactory;
/** @var array */
private $configItems = [
'private' => [],
'public' => [],
];
/**
* @param \ConfigFactory $configFactory
*/
public function __construct( \ConfigFactory $configFactory ) {
$this->configFactory = $configFactory;
}
/**
* Returns true, if this repository contains a configuration with a specific name.
*
* @param string $name The name of the config to check the existence of
* @param bool $alsoPrivate If set to true, will check the private config options, too
* @return bool
*/
public function has( $name, $alsoPrivate = false ) {
return isset( $this->configItems['public'][$name] ) ||
( $alsoPrivate && isset( $this->configItems['private'][$name] ) );
}
/**
* Returns the ConfigItem with the given name, if there's one. Throws a ConfigException
* otherwise.
*
* @param string $name The name of the configuration option to get
* @return array
* @throws \ConfigException
*/
public function get( $name ) {
if ( !$this->has( $name, true ) ) {
throw new \ConfigException( 'The configuration option ' . $name . ' does not exist.' );
}
if ( isset( $this->configItems['public'][$name] ) ) {
return $this->configItems['public'][$name];
}
return $this->configItems['private'][$name];
}
/**
* Returns an array of all configuration items saved in this ConfigRepository. This includes
* all configuration options, including the ones marked as private and public.
*
* Note: This function does not do any permission checks or something similar. You should not
* use this function, if the output will be available to the public audience! Use
* ConfigRepository::getPublic() instead.
*
* @return array
*/
public function getAll() {
return array_merge( $this->configItems['private'], $this->configItems['public'] );
}
/**
* Returns an array of all public configuration options saved in this ConfigRepository.
*
* @return array
*/
public function getPublic() {
return $this->configItems['public'];
}
/**
* Returns the current value of the configuration option. If no ConfigRegistry was provided
* when the config was added to the repository, the default value will be returned.
*
* @param string $name The name of the configuration option to get the value of
* @return mixed
* @throws \ConfigException
*/
public function getValueOf( $name ) {
$config = $this->get( $name );
if ( !isset( $config['configregistry'] ) ) {
return $config['value'];
}
return $this->configFactory->makeConfig( $config['configregistry'] )->get( $name );
}
/**
* Returns the description of the given config option, This can be either a localized
* description, if one such, or the (maybe english only) description provided in the
* definition of the configuration. If both is not provided an empty string is returned.
*
* @param string $name The name of the configuration option to get the description of
* @return string HTML-escaped string
*/
public function getDescriptionOf( $name ) {
$config = $this->get( $name );
if ( isset( $config['descriptionmsg'] ) ) {
return wfMessage( $config['descriptionmsg'] )->escaped();
}
if ( isset( $config['description'] ) ) {
return htmlspecialchars( $config['description'] );
}
return '';
}
/**
* Adds the definition of a configuration to this repository.
*
* @param string $name the name of the config
* @param array $config Options of this config. Values are:
* - value: The default value of this configuration, required
* - providedby: The name of the provider of this config (an extension, core, ...), required
* - configregistry: The name of the config to retrieve the value with, required
* - public: whether this option is public or not, if not set, the option is considered as
* "private", optional
* - description: the not localized description of this config option, optional
* - descriptionmsg: The message key of the localized description of this configuration
* option, optional
* @throws \ConfigException
*/
public function add( $name, array $config ) {
if ( $this->has( $name ) ) {
throw new \ConfigException( 'A configuration with the name ' . $name .
'does already exist. It is provided by: ' .
$this->get( $name )['providedby'] );
}
if ( isset( $config['public'] ) && $config['public'] ) {
$this->configItems['public'][$name] = $config;
} else {
$this->configItems['private'][$name] = $config;
}
}
/**
* Returns true, if there're no elements in this instance, otherwise false.
*
* @param bool $includePrivate Whether configuration options, that are marked as private
* should be included in this check.
* @return bool
*/
public function isEmpty( $includePrivate = false ) {
if ( $includePrivate ) {
return empty( $this->configItems['private'] ) &&
empty( $this->configItems[ 'public'] );
}
return empty( $this->configItems['public'] );
}
/**
* Re-uses existing Cache objects from $other. Cache objects are only re-used if the
* registered factory function for both is the same.
*
* @see SalvageableService::salvage()
*
* @param SalvageableService $other The object to salvage state from. $other must have the
* exact same type as $this.
*/
public function salvage( SalvageableService $other ) {
Assert::parameterType( self::class, $other, '$other' );
/** @var ConfigRepository $other */
$otherCurrentObj = $other->current();
foreach ( $other->configItems['public'] as $name => $otherConfig ) {
if ( isset( $this->configItems['public'][$name] ) ) {
continue;
}
$this->add( $name, $otherConfig );
// recover the pointer of the other config repository
if ( $otherCurrentObj === $otherConfig ) {
end( $this->configItems['public'] );
}
}
foreach ( $other->configItems['private'] as $name => $otherConfig ) {
if ( isset( $this->configItems['private'][$name] ) ) {
continue;
}
$this->add( $name, $otherConfig );
// recover the pointer of the other config repository
if ( $otherCurrentObj === $otherConfig ) {
end( $this->configItems['private'] );
}
}
// disable $other
$other->configItems = [];
}
}
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