* @version 1.6 */ class FeedHtmlField { /** * Mandatory attributes of a FeedHtmlField. */ public $rawFieldContent; /** * Optional attributes of a FeedHtmlField. * */ public $truncSize; public $syndicateHtml; /** * Creates a new instance of FeedHtmlField. * @param $string: if given, sets the rawFieldContent property */ public function __construct($parFieldContent) { if ($parFieldContent) { $this->rawFieldContent = $parFieldContent; } } /** * Creates the right output, depending on $truncSize, $syndicateHtml properties. * @return string the formatted field */ public function output() { // when field available and syndicated in html we assume // - valid html in $rawFieldContent and we enclose in CDATA tags // - no truncation (truncating risks producing invalid html) if (!$this->rawFieldContent) { $result = ""; } elseif ($this->syndicateHtml) { // Clean HTML before wrapping in CDATA $cleaned = $this->sanitizeHtml( $this->rawFieldContent ); $result = ""; } else { $result = ( $this->truncSize and is_int( $this->truncSize ) ) ? FeedCreator::iTrunc( htmlspecialchars( $this->rawFieldContent ), $this->truncSize ) : htmlspecialchars( $this->rawFieldContent ); } return $result; } /** * Sanitize HTML for RSS syndication - keep content, strip Bootstrap wrappers */ private function sanitizeHtml( $html ) { // Remove Bootstrap wrapper divs $html = preg_replace( '/]*class="(container|row|col-[^"]*)"[^>]*>/', '', $html ); $html = preg_replace( '/<\/div>/', '', $html ); // Keep formatting, images, links; strip everything else return preg_replace( '/\s+/', ' ', strip_tags( $html, '

' ), ); } }