<?php
namespace PressForward\Libraries;
/** * close all open xhtml tags at the end of the string

 * * @param string $html

 * @return string

 * @author Milian <mail@mili.de>

 * from http://www.kirupa.com/forum/showthread.php?343478-Close-all-open-HTML-tags
 */

class HTMLChecker {

	public function __construct() {
		// $html = $this->closetags($html);
	}

	public function check( $html = '' ) {
		$this->closetags( $html );
	}

	public function closetags( $html ) {

		$html = str_replace( array( '<article', '</article>' ), array( '<div', '</div>' ), $html );

		$html = str_replace( array( '<!--', '-->' ), array( '<span class="commented-out-html" style="display:none;">', '</span>' ), $html );

		$tags_and_content_to_strip = array( 'title','script','link','meta' );

		foreach ( $tags_and_content_to_strip as $tag ) {
			  $html = preg_replace( '/<' . $tag . '>(.|\s)*?<\/' . $tag . '>/','',$html );
			  $html = preg_replace( '/<' . $tag . ' (.|\s)*?>/','',$html );
		}

		// $html = preg_match_all('#<(article)*>#', $html, $resultc);
		// put all opened tags into an array
		preg_match_all( '#<([a-z]+)(?: .*)?(?<![/|/ ])>#iU', $html, $result );

		$openedtags = $result[1];   // put all closed tags into an array

		preg_match_all( '#</([a-z]+)>#iU', $html, $result );

		$closedtags = $result[1];
		if ( ! empty( $openedtags ) && is_array( $openedtags ) ) {
			$len_opened = count( $openedtags );
		} else {
			$len_opened = 0;
		}
		preg_match_all( '#<(em|strong)*/>#', $html, $resultc );
		$malformedtags = $resultc[1];
		// print_r('Count <br />');
		foreach ( $malformedtags as $tag ) {
			if ( $tag == 'em' ) {
				$html .= '</em>';
			}
			if ( $tag == 'strong' ) {
				$html .= '</strong>';
			}
		}

		// all tags are closed
		if ( count( $closedtags ) == $len_opened ) {

			return $html;

		}

		$openedtags = array_reverse( $openedtags );

		// close tags
		for ( $i = 0; $i < $len_opened; $i++ ) {

			if ( ! in_array( $openedtags[ $i ], $closedtags ) ) {

				$html .= '</' . $openedtags[ $i ] . '>';

			} else {

				unset( $closedtags[ array_search( $openedtags[ $i ], $closedtags ) ] );    }
		}

		// print_r($html);
		return $html;

	}
}

