--- /dev/null
+<?php
+
+namespace RemexHtml\TreeBuilder;
+use RemexHtml\HTMLData;
+use RemexHtml\Tokenizer\Attributes;
+
+/**
+ * The rules for parsing tokens in foreign content.
+ *
+ * This is not referred to as an insertion mode in the spec, but is
+ * sufficiently similar to one that we can inherit from InsertionMode here.
+ */
+class InForeignContent extends InsertionMode {
+ /**
+ * The list of tag names which unconditionally generate a parse error when
+ * seen in foreign content.
+ * @var bool[string]
+ */
+ private static $notAllowed = [
+ 'b' => true,
+ 'big' => true,
+ 'blockquote' => true,
+ 'body' => true,
+ 'br' => true,
+ 'center' => true,
+ 'code' => true,
+ 'dd' => true,
+ 'div' => true,
+ 'dl' => true,
+ 'dt' => true,
+ 'em' => true,
+ 'embed' => true,
+ 'h1' => true,
+ 'h2' => true,
+ 'h3' => true,
+ 'h4' => true,
+ 'h5' => true,
+ 'h6' => true,
+ 'head' => true,
+ 'hr' => true,
+ 'i' => true,
+ 'img' => true,
+ 'li' => true,
+ 'listing' => true,
+ 'menu' => true,
+ 'meta' => true,
+ 'nobr' => true,
+ 'ol' => true,
+ 'p' => true,
+ 'pre' => true,
+ 'ruby' => true,
+ 's' => true,
+ 'small' => true,
+ 'span' => true,
+ 'strong' => true,
+ 'strike' => true,
+ 'sub' => true,
+ 'sup' => true,
+ 'table' => true,
+ 'tt' => true,
+ 'u' => true,
+ 'ul' => true,
+ 'var' => true,
+ ];
+
+ /**
+ * The table for correcting the tag names of SVG elements, given in the
+ * "Any other start tag" section of the spec.
+ */
+ private static $svgElementCase = [
+ 'altglyph' => 'altGlyph',
+ 'altglyphdef' => 'altGlyphDef',
+ 'altglyphitem' => 'altGlyphItem',
+ 'animatecolor' => 'animateColor',
+ 'animatemotion' => 'animateMotion',
+ 'animatetransform' => 'animateTransform',
+ 'clippath' => 'clipPath',
+ 'feblend' => 'feBlend',
+ 'fecolormatrix' => 'feColorMatrix',
+ 'fecomponenttransfer' => 'feComponentTransfer',
+ 'fecomposite' => 'feComposite',
+ 'feconvolvematrix' => 'feConvolveMatrix',
+ 'fediffuselighting' => 'feDiffuseLighting',
+ 'fedisplacementmap' => 'feDisplacementMap',
+ 'fedistantlight' => 'feDistantLight',
+ 'fedropshadow' => 'feDropShadow',
+ 'feflood' => 'feFlood',
+ 'fefunca' => 'feFuncA',
+ 'fefuncb' => 'feFuncB',
+ 'fefuncg' => 'feFuncG',
+ 'fefuncr' => 'feFuncR',
+ 'fegaussianblur' => 'feGaussianBlur',
+ 'feimage' => 'feImage',
+ 'femerge' => 'feMerge',
+ 'femergenode' => 'feMergeNode',
+ 'femorphology' => 'feMorphology',
+ 'feoffset' => 'feOffset',
+ 'fepointlight' => 'fePointLight',
+ 'fespecularlighting' => 'feSpecularLighting',
+ 'fespotlight' => 'feSpotLight',
+ 'fetile' => 'feTile',
+ 'feturbulence' => 'feTurbulence',
+ 'foreignobject' => 'foreignObject',
+ 'glyphref' => 'glyphRef',
+ 'lineargradient' => 'linearGradient',
+ 'radialgradient' => 'radialGradient',
+ 'textpath' => 'textPath',
+ ];
+
+ public function characters( $text, $start, $length, $sourceStart, $sourceLength ) {
+ $builder = $this->builder;
+
+ while ( $length ) {
+ $normalLength = strcspn( $text, "\0\t\n\f\r ", $start, $length );
+ if ( $normalLength ) {
+ $builder->framesetOK = false;
+ $builder->insertCharacters( $text, $start, $normalLength,
+ $sourceStart, $sourceLength );
+ }
+ $start += $normalLength;
+ $length -= $normalLength;
+ $sourceStart += $normalLength;
+ $sourceLength -= $normalLength;
+ if ( !$length ) {
+ break;
+ }
+
+ $char = $text[$start];
+ if ( $char === "\0" ) {
+ $builder->error( "replaced null character", $sourceStart );
+ $builder->insertCharacters( "\xef\xbf\xbd", 0, 3, $sourceStart, $sourceLength );
+ $start++;
+ $length--;
+ $sourceStart++;
+ $sourceLength--;
+ } else {
+ // Whitespace
+ $wsLength = strspn( $text, "\t\n\f\r ", $start, $length );
+ $builder->insertCharacters( $text, $start, $wsLength, $sourceStart, $wsLength );
+ $start += $wsLength;
+ $length -= $wsLength;
+ $sourceStart += $wsLength;
+ $sourceLength -= $wsLength;
+ }
+ }
+ }
+
+ private function isIntegrationPoint( Element $element ) {
+ return $element->namespace === HTMLData::NS_HTML
+ || $element->isMathmlTextIntegration()
+ || $element->isHtmlIntegration();
+ }
+
+ public function startTag( $name, Attributes $attrs, $selfClose, $sourceStart, $sourceLength ) {
+ $builder = $this->builder;
+ $stack = $builder->stack;
+ $dispatcher = $this->dispatcher;
+
+ if ( isset( self::$notAllowed[$name] ) ) {
+ $allowed = false;
+ } elseif ( $name === 'font' && (
+ isset( $attrs['color'] ) || isset( $attrs['face'] ) || isset( $attrs['size'] ) )
+ ) {
+ $allowed = false;
+ } else {
+ $allowed = true;
+ }
+
+ if ( !$allowed ) {
+ $builder->error( "unexpected <$name> tag in foreign content", $sourceStart );
+ if ( !$builder->isFragment ) {
+ do {
+ $builder->pop( $sourceStart, 0 );
+ } while ( $stack->current && !$this->isIntegrationPoint( $stack->current ) );
+ $dispatcher->startTag( $name, $attrs, $selfClose, $sourceStart, $sourceLength );
+ return;
+ }
+ }
+
+ $acnNs = $builder->adjustedCurrentNode()->namespace;
+ if ( $acnNs === HTMLData::NS_MATHML ) {
+ $attrs = new ForeignAttributes( $attrs, 'math' );
+ } elseif ( $acnNs === HTMLData::NS_SVG ) {
+ $attrs = new ForeignAttributes( $attrs, 'svg' );
+ if ( isset( self::$svgElementCase[$name] ) ) {
+ $name = self::$svgElementCase[$name];
+ }
+ } else {
+ $attrs = new ForeignAttributes( $attrs, 'other' );
+ }
+ $dispatcher->ack = true;
+ $builder->insertForeign( $acnNs, $name, $attrs, $selfClose, $sourceStart, $sourceLength );
+ }
+
+ public function endTag( $name, $sourceStart, $sourceLength ) {
+ $builder = $this->builder;
+ $stack = $builder->stack;
+ $dispatcher = $this->dispatcher;
+
+ $node = $stack->current;
+ if ( strcasecmp( $node->name, $name ) !== 0 ) {
+ $builder->error( "mismatched end tag in foreign content", $sourceStart );
+ }
+ for ( $idx = $stack->length() - 1; $idx > 0; $idx-- ) {
+ if ( strcasecmp( $node->name, $name ) === 0 ) {
+ $builder->popAllUpToElement( $node, $sourceStart, $sourceLength );
+ break;
+ }
+ $node = $stack->item( $idx - 1 );
+ if ( $node->namespace === HTMLData::NS_HTML ) {
+ $dispatcher->getHandler()->endTag( $name, $sourceStart, $sourceLength );
+ break;
+ }
+ }
+ }
+
+ public function endDocument( $pos ) {
+ throw new TreeBuilderError( "unspecified, presumed unreachable" );
+ }
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff