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<?php
/**
* This file a contains a message group implementation.
*
* @file
* @author Niklas Laxström
* @copyright Copyright © 2010-2013, Niklas Laxström
* @license GPL-2.0+
*/
/**
* Groups multiple message groups together as one big group.
*
* Limitations:
* - Only groups in the same namespace.
* @ingroup MessageGroup
*/
class AggregateMessageGroup extends MessageGroupBase {
public function exists() {
// Group exists if there are any subgroups.
$exists = (bool)$this->conf['GROUPS'];
return $exists;
}
public function load( $code ) {
$messages = array();
/**
* @var $group MessageGroup
*/
foreach ( $this->getGroups() as $group ) {
$messages += $group->load( $code );
}
return $messages;
}
public function getMangler() {
if ( !isset( $this->mangler ) ) {
$this->mangler = StringMatcher::EmptyMatcher();
}
return $this->mangler;
}
public function getGroups() {
if ( !isset( $this->groups ) ) {
$groups = array();
$ids = (array)$this->conf['GROUPS'];
$ids = MessageGroups::expandWildcards( $ids );
foreach ( $ids as $id ) {
// Do not try to include self and go to infinite loop.
if ( $id === $this->getId() ) {
continue;
}
$group = MessageGroups::getGroup( $id );
if ( $group === null ) {
error_log( "Invalid group id in {$this->getId()}: $id" );
continue;
}
if ( MessageGroups::getPriority( $group ) === 'discouraged' ) {
continue;
}
$groups[$id] = $group;
}
$this->groups = $groups;
}
return $this->groups;
}
protected function loadMessagesFromCache( $groups ) {
$messages = array();
foreach ( $groups as $group ) {
if ( $group instanceof MessageGroupOld ) {
$messages += $group->getDefinitions();
continue;
}
if ( $group instanceof AggregateMessageGroup ) {
$messages += $this->loadMessagesFromCache( $group->getGroups() );
continue;
}
$cache = new MessageGroupCache( $group );
if ( $cache->exists() ) {
foreach ( $cache->getKeys() as $key ) {
$messages[$key] = $cache->get( $key );
}
}
}
return $messages;
}
public function initCollection( $code ) {
$messages = $this->loadMessagesFromCache( $this->getGroups() );
$namespace = $this->getNamespace();
$definitions = new MessageDefinitions( $messages, $namespace );
$collection = MessageCollection::newFromDefinitions( $definitions, $code );
$this->setTags( $collection );
return $collection;
}
/**
* @param string $key Message key
* @param string $code Language code
* @return null|string
*/
public function getMessage( $key, $code ) {
/* Just hand over the message content retrieval to the primary message
* group directly. This used to iterate over the subgroups looking for
* the primary group, but that might actually be under some other
* aggregate message group.
* @todo Implement getMessageContent to avoid hardcoding the namespace
* here.
*/
$title = Title::makeTitle( $this->getNamespace(), $key );
$handle = new MessageHandle( $title );
$groupId = MessageIndex::getPrimaryGroupId( $handle );
if ( $groupId === $this->getId() ) {
// Message key owned by aggregate group.
// Should not ever happen, but it does.
error_log( "AggregateMessageGroup $groupId cannot be primary owner of key $key" );
return null;
}
$group = MessageGroups::getGroup( $groupId );
if ( $group ) {
return $group->getMessage( $key, $code );
} else {
return null;
}
}
public function getTags( $type = null ) {
$tags = array();
/**
* @var $group MessageGroup
*/
foreach ( $this->getGroups() as $group ) {
$tags = array_merge_recursive( $tags, $group->getTags( $type ) );
}
return $tags;
}
public function getKeys() {
$keys = array();
/**
* @var $group MessageGroup
*/
foreach ( $this->getGroups() as $group ) {
// @todo Not all oldstyle groups have getKeys yet
if ( method_exists( $group, 'getKeys' ) ) {
$keys = array_merge( $keys, $group->getKeys() );
} else {
$keys = array_keys( $group->getDefinitions() );
}
}
/* In case some groups are included directly and indirectly
* via other subgroup, we might get the same keys multiple
* times. Since this is a list we need to remove duplicates
* manually */
return array_unique( $keys );
}
}
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