1 files changed, 70 insertions, 0 deletions
diff --git a/includes/classes/FeedHtmlField.php b/includes/classes/FeedHtmlField.php
new file mode 100755
index 0000000..a5b37cb
--- /dev/null
+++ b/includes/classes/FeedHtmlField.php
@@ -0,0 +1,70 @@
+<?php
+namespace Bitweaver\Rss;
+
+/**
+ * @package rss
+ * An FeedHtmlField describes and generates
+ * a feed, item or image html field (probably a description). Output is
+ * generated based on $truncSize, $syndicateHtml properties.
+ * @author Pascal Van Hecke <feedcreator.class.php@vanhecke.info>
+ * @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 );
+			$result = "<![CDATA[$cleaned]]>";
+		} 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( '/<div[^>]*class="(container|row|col-[^"]*)"[^>]*>/', '', $html );
+		$html = preg_replace( '/<\/div>/', '', $html );
+		
+		// Keep formatting, images, links; strip everything else
+		return preg_replace(
+			'/\s+/', 
+			' ', 
+			strip_tags( $html, '<p><br><img><strong><em><a><blockquote><ul><ol><li>' )
+		);
+	}
+}