true,
'base' => true,
'basefont' => true,
'bgsound' => true,
'br' => true,
'col' => true,
'embed' => true,
'frame' => true,
'hr' => true,
'img' => true,
'input' => true,
'keygen' => true,
'link' => true,
'menuitem' => true,
'meta' => true,
'param' => true,
'source' => true,
'track' => true,
'wbr' => true,
];
/**
* The elements which need a leading newline in their contents to be
* duplicated, since the parser strips a leading newline.
*/
protected $prefixLfElements = [
'pre' => true,
'textarea' => true,
'listing' => true
];
/**
* The elements which have unescaped contents.
*/
protected $rawTextElements = [
'style' => true,
'script' => true,
'xmp' => true,
'iframe' => true,
'noembed' => true,
'noframes' => true,
'plaintext' => true,
];
/**
* The escape table for attribute values
*/
protected $attributeEscapes = [
'&' => '&',
"\xc2\xa0" => ' ',
'"' => '"',
];
/**
* The escape table for text nodes
*/
protected $textEscapes = [
'&' => '&',
"\xc2\xa0" => ' ',
'<' => '<',
'>' => '>',
];
/**
* Attribute namespaces which have unqualified local names
*/
protected $unqualifiedNamespaces = [
HTMLData::NS_HTML => true,
HTMLData::NS_MATHML => true,
HTMLData::NS_SVG => true,
];
protected $useSourceDoctype;
protected $reverseCoercion;
/**
* Constructor.
*
* @param array $options An associative array of options:
* - scriptingFlag : Set this to false to disable scripting. True by default.
* - useSourceDoctype : Emit the doctype used in the source. If this is
* false or absent, an HTML doctype will be used.
* - reverseCoercion : When formatting a DOM node, reverse the encoding
* of invalid names. False by default.
*/
public function __construct( $options = [] ) {
$options += [
'scriptingFlag' => true,
'useSourceDoctype' => false,
'reverseCoercion' => false,
];
if ( $options['scriptingFlag'] ) {
$this->rawTextElements['noscript'] = true;
}
$this->useSourceDoctype = $options['useSourceDoctype'];
$this->reverseCoercion = $options['reverseCoercion'];
}
public function startDocument( $fragmentNamespace, $fragmentName ) {
return "";
}
public function characters( SerializerNode $parent, $text, $start, $length ) {
$text = substr( $text, $start, $length );
if ( $parent->namespace !== HTMLData::NS_HTML
|| !isset( $this->rawTextElements[$parent->name] )
) {
$text = strtr( $text, $this->textEscapes );
}
return $text;
}
public function element( SerializerNode $parent, SerializerNode $node, $contents ) {
$name = $node->name;
$s = "<$name";
foreach ( $node->attrs->getValues() as $attrName => $attrValue ) {
$encValue = strtr( $attrValue, $this->attributeEscapes );
$s .= " $attrName=\"$encValue\"";
}
$s .= '>';
if ( $node->namespace === HTMLData::NS_HTML ) {
if ( isset( $contents[0] ) && $contents[0] === "\n"
&& isset( $this->prefixLfElements[$name] )
) {
$s .= "\n$contents";
} elseif ( !isset( $this->voidElements[$name] ) ) {
$s .= "$contents";
}
} else {
$s .= "$contents";
}
return $s;
}
public function comment( SerializerNode $parent, $text ) {
return "";
}
public function doctype( $name, $public, $system ) {
return '';
}
public function formatDOMNode( \DOMNode $node ) {
$contents = '';
if ( $node->firstChild ) {
foreach ( $node->childNodes as $child ) {
$contents .= $this->formatDOMNode( $child );
}
}
switch ( $node->nodeType ) {
case XML_ELEMENT_NODE:
return $this->formatDOMElement( $node, $contents );
case XML_DOCUMENT_NODE:
if ( !$this->useSourceDoctype ) {
return "" . $contents;
} else {
return $contents;
}
case XML_DOCUMENT_FRAG_NODE:
return $contents;
case XML_TEXT_NODE:
$text = $node->data;
$parent = $node->parentNode;
if ( $parent->namespaceURI !== HTMLData::NS_HTML
|| !isset( $this->rawTextElements[$parent->nodeName] )
) {
$text = strtr( $text, $this->textEscapes );
}
return $text;
case XML_CDATA_SECTION_NODE:
$parent = $node->parentNode;
if ( $parent->namespaceURI === HTMLData::NS_HTML ) {
// CDATA is not allowed in HTML nodes
return $node->data;
} else {
return "data}]]>";
}
case XML_PI_NODE:
return "target} {$node->data}>";
case XML_COMMENT_NODE:
return "";
case XML_DOCUMENT_TYPE_NODE:
if ( $this->useSourceDoctype ) {
return "name}>";
} else {
return '';
}
default:
return '';
}
}
public function formatDOMElement( \DOMElement $node, $contents ) {
$ns = $node->namespaceURI;
if ( $ns === null
|| isset( $this->unqualifiedNamespaces[$ns] )
|| $node->prefix === null
) {
$name = $node->localName;
} else {
$name = $node->prefix . ':' . $node->localName;
}
if ( $this->reverseCoercion ) {
$name = DOMUtils::uncoerceName( $name );
}
$s = '<' . $name;
foreach ( $node->attributes as $attr ) {
switch ( $attr->namespaceURI ) {
case HTMLData::NS_XML:
$attrName = 'xml:' . $attr->localName;
break;
case HTMLData::NS_XMLNS:
if ( $attr->localName === 'xmlns' ) {
$attrName = 'xmlns';
} else {
$attrName = 'xmlns:' . $attr->localName;
}
break;
case HTMLData::NS_XLINK:
$attrName = 'xlink:' . $attr->localName;
break;
default:
if ( strlen( $attr->prefix ) ) {
$attrName = $attr->prefix . ':' . $attr->localName;
} else {
$attrName = $attr->localName;
}
}
if ( $this->reverseCoercion ) {
$attrName = DOMUtils::uncoerceName( $attrName );
}
$encValue = strtr( $attr->value, $this->attributeEscapes );
$s .= " $attrName=\"$encValue\"";
}
$s .= '>';
if ( $ns === HTMLData::NS_HTML ) {
if ( isset( $contents[0] ) && $contents[0] === "\n"
&& isset( $this->prefixLfElements[$name] )
) {
$s .= "\n$contents";
} elseif ( !isset( $this->voidElements[$name] ) ) {
$s .= "$contents";
}
} else {
$s .= "$contents";
}
return $s;
}
}