--- /dev/null
+<?php
+
+namespace RemexHtml\TreeBuilder;
+use RemexHtml\HTMLData;
+use RemexHtml\Tokenizer\Attribute;
+use RemexHtml\Tokenizer\Attributes;
+
+/**
+ * An Attributes class for storing attributes on foreign elements, which may
+ * have namespaces. Features lazy adjustment of attribute name case.
+ */
+class ForeignAttributes implements Attributes {
+ protected $unadjusted;
+ protected $table;
+ protected $attrObjects;
+
+ /**
+ * Adjustment tables for the case of attributes on MathML and SVG elements
+ */
+ private static $adjustmentTables = [
+ 'math' => [
+ 'definitionurl' => 'definitionURL',
+ ],
+ 'svg' => [
+ 'attributename' => 'attributeName',
+ 'attributetype' => 'attributeType',
+ 'basefrequency' => 'baseFrequency',
+ 'baseprofile' => 'baseProfile',
+ 'calcmode' => 'calcMode',
+ 'clippathunits' => 'clipPathUnits',
+ 'diffuseconstant' => 'diffuseConstant',
+ 'edgemode' => 'edgeMode',
+ 'filterunits' => 'filterUnits',
+ 'glyphref' => 'glyphRef',
+ 'gradienttransform' => 'gradientTransform',
+ 'gradientunits' => 'gradientUnits',
+ 'kernelmatrix' => 'kernelMatrix',
+ 'kernelunitlength' => 'kernelUnitLength',
+ 'keypoints' => 'keyPoints',
+ 'keysplines' => 'keySplines',
+ 'keytimes' => 'keyTimes',
+ 'lengthadjust' => 'lengthAdjust',
+ 'limitingconeangle' => 'limitingConeAngle',
+ 'markerheight' => 'markerHeight',
+ 'markerunits' => 'markerUnits',
+ 'markerwidth' => 'markerWidth',
+ 'maskcontentunits' => 'maskContentUnits',
+ 'maskunits' => 'maskUnits',
+ 'numoctaves' => 'numOctaves',
+ 'pathlength' => 'pathLength',
+ 'patterncontentunits' => 'patternContentUnits',
+ 'patterntransform' => 'patternTransform',
+ 'patternunits' => 'patternUnits',
+ 'pointsatx' => 'pointsAtX',
+ 'pointsaty' => 'pointsAtY',
+ 'pointsatz' => 'pointsAtZ',
+ 'preservealpha' => 'preserveAlpha',
+ 'preserveaspectratio' => 'preserveAspectRatio',
+ 'primitiveunits' => 'primitiveUnits',
+ 'refx' => 'refX',
+ 'refy' => 'refY',
+ 'repeatcount' => 'repeatCount',
+ 'repeatdur' => 'repeatDur',
+ 'requiredextensions' => 'requiredExtensions',
+ 'requiredfeatures' => 'requiredFeatures',
+ 'specularconstant' => 'specularConstant',
+ 'specularexponent' => 'specularExponent',
+ 'spreadmethod' => 'spreadMethod',
+ 'startoffset' => 'startOffset',
+ 'stddeviation' => 'stdDeviation',
+ 'stitchtiles' => 'stitchTiles',
+ 'surfacescale' => 'surfaceScale',
+ 'systemlanguage' => 'systemLanguage',
+ 'tablevalues' => 'tableValues',
+ 'targetx' => 'targetX',
+ 'targety' => 'targetY',
+ 'textlength' => 'textLength',
+ 'viewbox' => 'viewBox',
+ 'viewtarget' => 'viewTarget',
+ 'xchannelselector' => 'xChannelSelector',
+ 'ychannelselector' => 'yChannelSelector',
+ 'zoomandpan' => 'zoomAndPan',
+ ],
+ 'other' => [],
+ ];
+
+ /**
+ * The potentially namespaced attributes, and the namespaces they belong to.
+ * Excepting xmlns since it is very special.
+ */
+ private static $namespaceMap = [
+ 'xlink:actuate' => HTMLData::NS_XLINK,
+ 'xlink:arcrole' => HTMLData::NS_XLINK,
+ 'xlink:href' => HTMLData::NS_XLINK,
+ 'xlink:role' => HTMLData::NS_XLINK,
+ 'xlink:show' => HTMLData::NS_XLINK,
+ 'xlink:title' => HTMLData::NS_XLINK,
+ 'xlink:type' => HTMLData::NS_XLINK,
+ 'xml:lang' => HTMLData::NS_XML,
+ 'xml:space' => HTMLData::NS_XML,
+ 'xmlns:xlink' => HTMLData::NS_XMLNS,
+ ];
+
+ /**
+ * @param Attributes $unadjusted The unadjusted attributes from the Tokenizer
+ * @param string $type The element type, which may be "math", "svg" or "other".
+ */
+ public function __construct( Attributes $unadjusted, $type ) {
+ $this->unadjusted = $unadjusted;
+ $this->table = self::$adjustmentTables[$type];
+ }
+
+ public function offsetExists( $offset ) {
+ $offset = isset( $this->table[$offset] ) ? $this->table[$offset] : $offset;
+ return $this->unadjusted->offsetExists( $offset );
+ }
+
+ public function &offsetGet( $offset ) {
+ $offset = isset( $this->table[$offset] ) ? $this->table[$offset] : $offset;
+ return $this->unadjusted->offsetGet( $offset );
+ }
+
+ public function offsetSet( $offset, $value ) {
+ throw new TreeBuilderError( "Setting foreign attributes is not supported" );
+ }
+
+ public function offsetUnset( $offset ) {
+ throw new TreeBuilderError( "Setting foreign attributes is not supported" );
+ }
+
+ public function getValues() {
+ $result = [];
+ foreach ( $this->unadjusted->getValues() as $name => $value ) {
+ $name = isset( $this->table[$name] ) ? $this->table[$name] : $name;
+ $result[$name] = $value;
+ }
+ return $result;
+ }
+
+ public function key() {
+ $name = parent::key();
+ return isset( $this->table[$name] ) ? $this->table[$name] : $name;
+ }
+
+ public function count() {
+ return $this->unadjusted->count();
+ }
+
+ public function getIterator() {
+ return new \ArrayIterator( $this->getValues() );
+ }
+
+ public function getObjects() {
+ if ( $this->attrObjects === null ) {
+ $result = [];
+ foreach ( $this->unadjusted->getValues() as $name => $value ) {
+ if ( isset( $this->table[$name] ) ) {
+ $name = $this->table[$name];
+ }
+ if ( $name === 'xmlns' ) {
+ $prefix = null;
+ $namespace = HTMLData::NS_XMLNS;
+ $localName = $name;
+ } elseif ( isset( self::$namespaceMap[$name] ) ) {
+ $namespace = self::$namespaceMap[$name];
+ list( $prefix, $localName ) = explode( ':', $name, 2 );
+ } else {
+ $prefix = null;
+ $namespace = null;
+ $localName = $name;
+ }
+ $result[$name] = new Attribute( $name, $namespace, $prefix, $localName, $value );
+ }
+ $this->attrObjects = $result;
+ }
+ return $this->attrObjects;
+ }
+
+ public function merge( Attributes $other ) {
+ throw new TreeBuilderError( __METHOD__ . ': unimplemented' );
+ }
+}
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