X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/mediawiki.git/blobdiff_plain/19e297c21b10b1b8a3acad5e73fc71dcb35db44a..6932310fd58ebef145fa01eb76edf7150284d8ea:/vendor/wikimedia/remex-html/RemexHtml/TreeBuilder/InForeignContent.php

diff --git a/vendor/wikimedia/remex-html/RemexHtml/TreeBuilder/InForeignContent.php b/vendor/wikimedia/remex-html/RemexHtml/TreeBuilder/InForeignContent.php
new file mode 100644
index 00000000..d4af5be9
--- /dev/null
+++ b/vendor/wikimedia/remex-html/RemexHtml/TreeBuilder/InForeignContent.php
@@ -0,0 +1,220 @@
+<?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" );
+	}
+}