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LuaLibrary.php
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LuaLibrary.php
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<?php
/**
* Contains the class handling the scribunto lua support.
*
* @copyright (C) 2018, Tobias Oetterer, Paderborn University
* @license https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License, version 3 (or later)
*
* This file is part of the MediaWiki extension BootstrapComponents.
* The BootstrapComponents extension 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 3 of the License, or
* (at your option) any later version.
*
* The BootstrapComponents extension 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, see <https://www.gnu.org/licenses/>.
*
* @file
* @ingroup BootstrapComponents
* @author Tobias Oetterer
*/
namespace MediaWiki\Extension\BootstrapComponents;
use MediaWiki\MediaWikiServices;
use MWException;
use ReflectionClass;
use ReflectionException;
use Scribunto_LuaEngine;
use Scribunto_LuaLibraryBase;
/**
* Class LuaLibrary
*
* Class to handle the scribunto lua support.
*
* @since 1.1
*/
class LuaLibrary extends Scribunto_LuaLibraryBase {
/**
* @var ApplicationFactory $applicationFactory;
*/
private ApplicationFactory $applicationFactory;
/**
* @var BootstrapComponentsService
*/
private BootstrapComponentsService $bootstrapComponentService;
/**
* LuaLibrary constructor.
*
* @param Scribunto_LuaEngine $engine
*/
public function __construct( Scribunto_LuaEngine $engine ) {
parent::__construct( $engine );
$this->applicationFactory = ApplicationFactory::getInstance();
$this->bootstrapComponentService = MediaWikiServices::getInstance()->getService( 'BootstrapComponentsService' );
}
/**
* @return array
*/
public function register(): array {
$lib = [
'parse' => [ $this, 'parse' ],
'getSkin' => [ $this, 'getSkin' ],
];
return $this->getEngine()->registerInterface( __DIR__ . '/../lua/mw.bootstrap.lua', $lib, [] );
}
/**
* @param null|string $componentName
* @param null|string $input
* @param null|array $arguments
* @param null|bool $noStrip
*
* @return string[]
*
* Note: Please refrain from using Type hints in function signature. Will break tests!
*@throws MWException
*
* @throws ReflectionException
*/
public function parse( ?string $componentName, ?string $input, ?array $arguments, ?bool $noStrip = false ): array {
if ( empty( $componentName ) ) {
return [ wfMessage( 'bootstrap-components-lua-error-no-component' )->text() ];
}
$componentLibrary = MediaWikiServices::getInstance()->getService( 'BootstrapComponents.ComponentLibrary' );
if ( !in_array( $componentName, $componentLibrary->getRegisteredComponents() ) ) {
return [ wfMessage( 'bootstrap-components-lua-error-invalid-component', $componentName )->text() ];
}
$componentClass = $componentLibrary->getClassFor( $componentName );
$parserRequest = $this->buildParserRequest( $input, $arguments, $componentName );
$component = $this->getComponent( $componentClass );
$parsedComponent = $component->parseComponent( $parserRequest );
if ( is_array( $parsedComponent ) ) {
$parsedComponent = $parsedComponent[0];
}
// we use $noStrip == true for unit tests and as a hidden feature in lua ;)
$noStrip = $noStrip || (isset( $arguments['noStrip'] ) && $arguments['noStrip']);
$parsedComponent = $noStrip ? $parsedComponent : $this->getParser()->insertStripItem( $parsedComponent );
return [ $parsedComponent ];
}
/**
* @return string[]
*/
public function getSkin(): array {
return [ $this->getBootstrapComponentsService()->getNameOfActiveSkin() ];
}
/**
* @param string $input
* @param array|string|null $arguments
* @param null|string $component
*
* @return ParserRequest
*@throws MWException
*
*/
protected function buildParserRequest(
string $input, array|string|null $arguments, ?string $component = null
): ParserRequest {
// prepare the arguments array
$parserRequestArguments = $this->processLuaArguments( $arguments );
array_unshift( $parserRequestArguments, $input );
array_unshift( $parserRequestArguments, $this->getParser() );
return ApplicationFactory::getInstance()->getNewParserRequest( $parserRequestArguments, true, $component );
}
/**
* @param string $componentClass
*
* @throws MWException
* @throws ReflectionException
*
* @return AbstractComponent
*/
protected function getComponent( string $componentClass ): AbstractComponent {
$objectReflection = new ReflectionClass( $componentClass );
/** @var AbstractComponent $component */
$component = $objectReflection->newInstanceArgs(
[
MediaWikiServices::getInstance()->getService( 'BootstrapComponents.ComponentLibrary' ),
$this->getApplicationFactory()->getParserOutputHelper( $this->getParser() ),
MediaWikiServices::getInstance()->getService( 'BootstrapComponents.NestingController' ),
]
);
return $component;
}
/**
* @return ApplicationFactory
*/
protected function getApplicationFactory(): ApplicationFactory {
return $this->applicationFactory;
}
/**
* @return BootstrapComponentsService
*/
protected function getBootstrapComponentsService(): BootstrapComponentsService
{
return $this->bootstrapComponentService;
}
/**
* Takes the $arguments passed from lua and pre-processes them: make sure,
* we have a sequence array (not associative)
*
* @param string|array $arguments
*
* @return array
*/
private function processLuaArguments( $arguments ): array {
// make sure, we have an array of parameters
if ( !is_array( $arguments ) ) {
$arguments = preg_split( "/(?<=[^\|])\|(?=[^\|])/", $arguments );
}
// if $arguments were supplied as key => value pair (aka associative array),
// we rectify this here
$processedArguments = [];
foreach ( $arguments as $key => $value ) {
$processedArguments[] = $this->processKeyValuePair( $key, $value );
}
return $processedArguments;
}
/**
* @param int|string $key
* @param mixed $value
*
* @return string
*/
private function processKeyValuePair( $key, $value ): string
{
if ( is_int( $key ) || preg_match( '/[0-9]+/', $key ) ) {
return trim( $value );
}
if ( is_array( $value ) ) {
$glue = $key == 'style' ? ';' : ' ';
return $key . '=' . implode( $glue, $value );
} elseif( is_bool( $value ) ) {
return $key . '=' . ( $value ? 'yes' : 'no' );
} else {
return $key . '=' . $value;
}
}
}