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https://github.com/ezyang/htmlpurifier.git
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1ab3ae160a
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@88 48356398-32a2-884e-a903-53898d9a118a
77 lines
2.5 KiB
PHP
77 lines
2.5 KiB
PHP
<?php
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require_once 'HTMLPurifier/Lexer.php';
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// PHP5 only!
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class HTMLPurifier_Lexer_DOMLex extends HTMLPurifier_Lexer
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{
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public function tokenizeHTML($string) {
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$doc = new DOMDocument();
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// preprocess string
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$string = '<html><body><div>'.$string.'</div></body></html>';
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@$doc->loadHTML($string); // mute all errors, handle it transparently
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return $this->tokenizeDOM(
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$doc->childNodes->item(1)-> // html
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childNodes->item(0)-> // body
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childNodes->item(0) // div
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);
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}
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protected function tokenizeDOM($node, $tokens = array(), $collect = false) {
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// recursive goodness!
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// intercept non element nodes
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if ( !($node instanceof DOMElement) ) {
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if ($node instanceof DOMComment) {
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$tokens[] = new HTMLPurifier_Token_Comment($node->data);
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} elseif ($node instanceof DOMText) {
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$tokens[] = new HTMLPurifier_Token_Text($node->data);
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}
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// quite possibly, the object wasn't handled, that's fine
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return $tokens;
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}
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// We still have to make sure that the element actually IS empty
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if (!$node->hasChildNodes()) {
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if ($collect) {
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$tokens[] = new HTMLPurifier_Token_Empty(
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$node->tagName,
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$this->transformAttrToAssoc($node->attributes)
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);
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}
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} else {
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if ($collect) { // don't wrap on first iteration
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$tokens[] = new HTMLPurifier_Token_Start(
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$tag_name = $node->tagName, // somehow, it get's dropped
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$this->transformAttrToAssoc($node->attributes)
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);
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}
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foreach ($node->childNodes as $node) {
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// remember, it's an accumulator. Otherwise, we'd have
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// to use array_merge
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$tokens = $this->tokenizeDOM($node, $tokens, true);
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}
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if ($collect) {
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$tokens[] = new HTMLPurifier_Token_End($tag_name);
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}
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}
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return $tokens;
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}
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protected function transformAttrToAssoc($attribute_list) {
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$attribute_array = array();
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// undocumented behavior
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foreach ($attribute_list as $key => $attr) {
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$attribute_array[$key] = $attr->value;
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}
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return $attribute_array;
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}
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}
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?>
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