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<?php
/**
* Tag hooks provided by MediaWiki core
*
* 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
* @ingroup Parser
*/
/**
* Various tag hooks, registered in Parser::firstCallInit()
* @ingroup Parser
*/
class CoreTagHooks {
/**
* @param Parser $parser
* @return void
*/
public static function register( $parser ) {
global $wgRawHtml;
$parser->setHook( 'pre', [ __CLASS__, 'pre' ] );
$parser->setHook( 'nowiki', [ __CLASS__, 'nowiki' ] );
$parser->setHook( 'gallery', [ __CLASS__, 'gallery' ] );
$parser->setHook( 'indicator', [ __CLASS__, 'indicator' ] );
if ( $wgRawHtml ) {
$parser->setHook( 'html', [ __CLASS__, 'html' ] );
}
}
/**
* Core parser tag hook function for 'pre'.
* Text is treated roughly as 'nowiki' wrapped in an HTML 'pre' tag;
* valid HTML attributes are passed on.
*
* @param string $text
* @param array $attribs
* @param Parser $parser
* @return string HTML
*/
public static function pre( $text, $attribs, $parser ) {
// Backwards-compatibility hack
$content = StringUtils::delimiterReplace( '<nowiki>', '</nowiki>', '$1', $text, 'i' );
$attribs = Sanitizer::validateTagAttributes( $attribs, 'pre' );
// We need to let both '"' and '&' through,
// for strip markers and entities respectively.
$content = str_replace(
[ '>', '<' ],
[ '>', '<' ],
$content
);
return Html::rawElement( 'pre', $attribs, $content );
}
/**
* Core parser tag hook function for 'html', used only when
* $wgRawHtml is enabled.
*
* This is potentially unsafe and should be used only in very careful
* circumstances, as the contents are emitted as raw HTML.
*
* Uses undocumented extended tag hook return values, introduced in r61913.
*
* @param string $content
* @param array $attributes
* @param Parser $parser
* @throws MWException
* @return array
*/
public static function html( $content, $attributes, $parser ) {
global $wgRawHtml;
if ( $wgRawHtml ) {
return [ $content, 'markerType' => 'nowiki' ];
} else {
throw new MWException( '<html> extension tag encountered unexpectedly' );
}
}
/**
* Core parser tag hook function for 'nowiki'. Text within this section
* gets interpreted as a string of text with HTML-compatible character
* references, and wiki markup within it will not be expanded.
*
* Uses undocumented extended tag hook return values, introduced in r61913.
*
* @param string $content
* @param array $attributes
* @param Parser $parser
* @return array
*/
public static function nowiki( $content, $attributes, $parser ) {
$content = strtr( $content, [
// lang converter
'-{' => '-{',
'}-' => '}-',
// html tags
'<' => '<',
'>' => '>'
// Note: Both '"' and '&' are not converted.
// This allows strip markers and entities through.
] );
return [ $content, 'markerType' => 'nowiki' ];
}
/**
* Core parser tag hook function for 'gallery'.
*
* Renders a thumbnail list of the given images, with optional captions.
* Full syntax documented on the wiki:
*
* https://www.mediawiki.org/wiki/Help:Images#Gallery_syntax
*
* @todo break Parser::renderImageGallery out here too.
*
* @param string $content
* @param array $attributes
* @param Parser $parser
* @return string HTML
*/
public static function gallery( $content, $attributes, $parser ) {
return $parser->renderImageGallery( $content, $attributes );
}
/**
* XML-style tag for page status indicators: icons (or short text snippets) usually displayed in
* the top-right corner of the page, outside of the main content.
*
* @param string $content
* @param array $attributes
* @param Parser $parser
* @param PPFrame $frame
* @return string
* @since 1.25
*/
public static function indicator( $content, array $attributes, Parser $parser, PPFrame $frame ) {
if ( !isset( $attributes['name'] ) || trim( $attributes['name'] ) === '' ) {
return '<span class="error">' .
wfMessage( 'invalid-indicator-name' )->inContentLanguage()->parse() .
'</span>';
}
$parser->getOutput()->setIndicator(
trim( $attributes['name'] ),
Parser::stripOuterParagraph( $parser->recursiveTagParseFully( $content, $frame ) )
);
return '';
}
}