mediawiki-extensions-Echo/includes/EchoContainmentSet.php

135 lines
4 KiB
PHP
Raw Normal View History

<?php
use MediaWiki\MediaWikiServices;
use MediaWiki\Preferences\MultiUsernameFilter;
/**
* Utilizes EchoContainmentList interface to provide a fluent interface to whitelist/blacklist
* from multiple sources like global variables, wiki pages, etc.
*
* Initialize:
* $cache = ObjectCache::getLocalClusterInstance();
* $set = new EchoContainmentSet;
* $set->addArray( $wgSomeGlobalParameter );
* $set->addOnWiki( NS_USER, 'Foo/bar-baz', $cache, 'some_user_specific_cache_key' );
*
* Usage:
* if ( $set->contains( 'SomeUser' ) ) {
* ...
* }
*/
class EchoContainmentSet {
/**
* @var EchoContainmentList[]
*/
protected $lists = [];
/**
* @var User
*/
protected $recipient;
/**
* @param User $recipient
*/
public function __construct( User $recipient ) {
$this->recipient = $recipient;
}
/**
* Add an EchoContainmentList to the set of lists checked by self::contains()
*
* @param EchoContainmentList $list
*/
public function add( EchoContainmentList $list ) {
$this->lists[] = $list;
}
/**
* Add a php array to the set of lists checked by self::contains()
*
* @param array $list
*/
public function addArray( array $list ) {
$this->add( new EchoArrayList( $list ) );
}
/**
* Add a list from a user preference to the set of lists checked by self::contains().
*
* @param string $preferenceName
*/
public function addFromUserOption( string $preferenceName ) {
$userOptionsLookup = MediaWikiServices::getInstance()->getUserOptionsLookup();
$preference = $userOptionsLookup->getOption( $this->recipient, $preferenceName, [] );
if ( $preference ) {
$ids = MultiUsernameFilter::splitIds( $preference );
$names = MediaWikiServices::getInstance()
->getCentralIdLookup()
->namesFromCentralIds( $ids, $this->recipient );
$this->addArray( $names );
}
}
/**
* Add a list of title IDs from a user preference to the set of lists
* checked by self::contains().
*
* @param string $preferenceName
*/
public function addTitleIDsFromUserOption( string $preferenceName ): void {
$userOptionsLookup = MediaWikiServices::getInstance()->getUserOptionsLookup();
$preference = $userOptionsLookup->getOption( $this->recipient, $preferenceName, [] );
if ( !is_string( $preference ) ) {
// We expect the preference data to be saved as a string via the
// preferences form; if the user modified their data so it's no
// longer a string, ignore it.
return;
}
$titleIDs = preg_split( '/\n/', $preference, -1, PREG_SPLIT_NO_EMPTY );
$this->addArray( $titleIDs );
}
/**
* Add a list from a wiki page to the set of lists checked by self::contains(). Data
* from wiki pages is cached via the BagOStuff. Caching is disabled when passing a null
* $cache object.
*
* @param int $namespace An NS_* constant representing the mediawiki namespace of the page containing the list.
* @param string $title The title of the page containing the list.
* @param WANObjectCache|null $cache An object to cache the page with or null for no cache.
* @param string $cacheKeyPrefix A prefix to be combined with the pages latest revision id and used as a cache key.
*
* @throws MWException
*/
public function addOnWiki(
$namespace, $title, WANObjectCache $cache = null, $cacheKeyPrefix = ''
) {
$list = new EchoOnWikiList( $namespace, $title );
if ( $cache ) {
if ( $cacheKeyPrefix === '' ) {
throw new MWException( 'Cache requires providing a cache key prefix.' );
}
$list = new EchoCachedList( $cache, $cacheKeyPrefix, $list );
}
$this->add( $list );
}
/**
* Test the wrapped lists for existence of $value
*
* @param mixed $value The value to look for
* @return bool True when the set contains the provided value
*/
public function contains( $value ) {
foreach ( $this->lists as $list ) {
// Use strict comparison to prevent the number 0 from matching all strings (T177825)
if ( in_array( $value, $list->getValues(), true ) ) {
return true;
}
}
return false;
}
}