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