83b798bbab
Some versions of html-tidy (e.g. the one currently in use on WMF wikis) will try to move all <style> tags in the body into the head, effectively removing them for our purposes. We need to avoid that for TemplateStyles. Bug: T167349 Change-Id: I133776d16f366cad73ed30af0e5a665fdf9f5ed9
100 lines
3.2 KiB
PHP
100 lines
3.2 KiB
PHP
<?php
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namespace MediaWiki\Tidy;
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use ParserOutput;
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use Parser;
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/**
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* Class used to hide mw:editsection tokens from Tidy so that it doesn't break them
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* or break on them. This is a bit of a hack for now, but hopefully in the future
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* we may create a real postprocessor or something that will replace this.
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* It's called wrapper because for now it basically takes over MWTidy::tidy's task
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* of wrapping the text in a xhtml block
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*
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* This re-uses some of the parser's UNIQ tricks, though some of it is private so it's
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* duplicated. Perhaps we should create an abstract marker hiding class.
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*
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* @ingroup Parser
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*/
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class RaggettWrapper {
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/**
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* @var array
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*/
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protected $mTokens;
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/**
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* @var int
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*/
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protected $mMarkerIndex;
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/**
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* @param string $text
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* @return string
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*/
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public function getWrapped( $text ) {
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$this->mTokens = [];
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$this->mMarkerIndex = 0;
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// Replace <mw:editsection> elements with placeholders
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$wrappedtext = preg_replace_callback( ParserOutput::EDITSECTION_REGEX,
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[ $this, 'replaceCallback' ], $text );
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// ...and <mw:toc> markers
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$wrappedtext = preg_replace_callback( '/\<\\/?mw:toc\>/',
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[ $this, 'replaceCallback' ], $wrappedtext );
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// ... and <math> tags
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$wrappedtext = preg_replace_callback( '/\<math(.*?)\<\\/math\>/s',
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[ $this, 'replaceCallback' ], $wrappedtext );
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// Modify inline Microdata <link> and <meta> elements so they say <html-link> and <html-meta> so
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// we can trick Tidy into not stripping them out by including them in tidy's new-empty-tags config
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$wrappedtext = preg_replace( '!<(link|meta)([^>]*?)(/{0,1}>)!', '<html-$1$2$3', $wrappedtext );
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// Similar for inline <style> tags, but those aren't empty.
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$wrappedtext = preg_replace_callback( '!<style([^>]*)>(.*?)</style>!s', function ( $m ) {
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return '<html-style' . $m[1] . '>'
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. $this->replaceCallback( [ $m[2] ] )
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. '</html-style>';
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}, $wrappedtext );
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// Preserve empty li elements (T49673) by abusing Tidy's datafld hack
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// The whitespace class is as in TY_(InitMap)
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$wrappedtext = preg_replace( "!<li>([ \r\n\t\f]*)</li>!",
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'<li datafld="" class="mw-empty-elt">\1</li>', $wrappedtext );
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// Wrap the whole thing in a doctype and body for Tidy.
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$wrappedtext = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"' .
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' "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>' .
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'<head><title>test</title></head><body>' . $wrappedtext . '</body></html>';
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return $wrappedtext;
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}
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/**
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* @param array $m
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* @return string
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*/
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private function replaceCallback( array $m ) {
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$marker = Parser::MARKER_PREFIX . "-item-{$this->mMarkerIndex}" . Parser::MARKER_SUFFIX;
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$this->mMarkerIndex++;
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$this->mTokens[$marker] = $m[0];
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return $marker;
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}
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/**
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* @param string $text
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* @return string
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*/
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public function postprocess( $text ) {
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// Revert <html-{link,meta,style}> back to <{link,meta,style}>
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$text = preg_replace( '!<html-(link|meta)([^>]*?)(/{0,1}>)!', '<$1$2$3', $text );
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$text = preg_replace( '!<(/?)html-(style)([^>]*)>!', '<$1$2$3>', $text );
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// Remove datafld
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$text = str_replace( '<li datafld=""', '<li', $text );
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// Restore the contents of placeholder tokens
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$text = strtr( $text, $this->mTokens );
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return $text;
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}
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}
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