friendica-github/library/HTML5/Parser.php

<?php

require_once dirname(__FILE__) . '/Data.php';
require_once dirname(__FILE__) . '/InputStream.php';
require_once dirname(__FILE__) . '/TreeBuilder.php';
require_once dirname(__FILE__) . '/Tokenizer.php';

/**
 * Outwards facing interface for HTML5.
 */
class HTML5_Parser
{
    /**
     * Parses a full HTML document.
     * @param $text HTML text to parse
     * @param $builder Custom builder implementation
     * @return Parsed HTML as DOMDocument
     */
    static public function parse($text, $builder = null) {

	// Cleanup invalid HTML
	$doc = new DOMDocument();

	if (mb_detect_encoding($text, "UTF-8", true) == "UTF-8")
		@$doc->loadHTML('<?xml encoding="UTF-8" ?>'.$text);
	else
		@$doc->loadHTML($text);

	$text = $doc->saveHTML();

        $tokenizer = new HTML5_Tokenizer($text, $builder);
        $tokenizer->parse();
        return $tokenizer->save();
    }
    /**
     * Parses an HTML fragment.
     * @param $text HTML text to parse
     * @param $context String name of context element to pretend parsing is in.
     * @param $builder Custom builder implementation
     * @return Parsed HTML as DOMDocument
     */
    static public function parseFragment($text, $context = null, $builder = null) {
        $tokenizer = new HTML5_Tokenizer($text, $builder);
        $tokenizer->parseFragment($context);
        return $tokenizer->save();
    }
}