1 files changed, 110 insertions, 0 deletions
diff --git a/lib/readability/JSLikeHTMLElement.php b/lib/readability/JSLikeHTMLElement.php
new file mode 100644
index 000000000..ada7d5ff3
--- /dev/null
+++ b/lib/readability/JSLikeHTMLElement.php
@@ -0,0 +1,110 @@
+<?php
+/**
+* JavaScript-like HTML DOM Element
+*
+* This class extends PHP's DOMElement to allow
+* users to get and set the innerHTML property of
+* HTML elements in the same way it's done in 
+* JavaScript.
+*
+* Example usage:
+* @code
+* require_once 'JSLikeHTMLElement.php';
+* header('Content-Type: text/plain');
+* $doc = new DOMDocument();
+* $doc->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
+* $doc->loadHTML('<div><p>Para 1</p><p>Para 2</p></div>');
+* $elem = $doc->getElementsByTagName('div')->item(0);
+* 
+* // print innerHTML
+* echo $elem->innerHTML; // prints '<p>Para 1</p><p>Para 2</p>'
+* echo "\n\n";
+* 
+* // set innerHTML
+* $elem->innerHTML = '<a href="http://fivefilters.org">FiveFilters.org</a>';
+* echo $elem->innerHTML; // prints '<a href="http://fivefilters.org">FiveFilters.org</a>'
+* echo "\n\n";
+* 
+* // print document (with our changes)
+* echo $doc->saveXML();
+* @endcode
+*
+* @author Keyvan Minoukadeh - http://www.keyvan.net - [email protected]
+* @see http://fivefilters.org (the project this was written for)
+*/
+class JSLikeHTMLElement extends DOMElement
+{
+	/**
+	* Used for setting innerHTML like it's done in JavaScript:
+	* @code
+	* $div->innerHTML = '<h2>Chapter 2</h2><p>The story begins...</p>';
+	* @endcode
+	*/
+	public function __set($name, $value) {
+		if ($name == 'innerHTML') {
+			// first, empty the element
+			for ($x=$this->childNodes->length-1; $x>=0; $x--) {
+				$this->removeChild($this->childNodes->item($x));
+			}
+			// $value holds our new inner HTML
+			if ($value != '') {
+				$f = $this->ownerDocument->createDocumentFragment();
+				// appendXML() expects well-formed markup (XHTML)
+				$result = @$f->appendXML($value); // @ to suppress PHP warnings
+				if ($result) {
+					if ($f->hasChildNodes()) $this->appendChild($f);
+				} else {
+					// $value is probably ill-formed
+					$f = new DOMDocument();
+					$value = mb_convert_encoding($value, 'HTML-ENTITIES', 'UTF-8');
+					// Using <htmlfragment> will generate a warning, but so will bad HTML
+					// (and by this point, bad HTML is what we've got).
+					// We use it (and suppress the warning) because an HTML fragment will 
+					// be wrapped around <html><body> tags which we don't really want to keep.
+					// Note: despite the warning, if loadHTML succeeds it will return true.
+					$result = @$f->loadHTML('<htmlfragment>'.$value.'</htmlfragment>');
+					if ($result) {
+						$import = $f->getElementsByTagName('htmlfragment')->item(0);
+						foreach ($import->childNodes as $child) {
+							$importedNode = $this->ownerDocument->importNode($child, true);
+							$this->appendChild($importedNode);
+						}
+					} else {
+						// oh well, we tried, we really did. :(
+						// this element is now empty
+					}
+				}
+			}
+		} else {
+			$trace = debug_backtrace();
+			trigger_error('Undefined property via __set(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
+		}
+	}
+
+	/**
+	* Used for getting innerHTML like it's done in JavaScript:
+	* @code
+	* $string = $div->innerHTML;
+	* @endcode
+	*/	
+	public function __get($name)
+	{
+		if ($name == 'innerHTML') {
+			$inner = '';
+			foreach ($this->childNodes as $child) {
+				$inner .= $this->ownerDocument->saveXML($child);
+			}
+			return $inner;
+		}
+
+		$trace = debug_backtrace();
+		trigger_error('Undefined property via __get(): '.$name.' in '.$trace[0]['file'].' on line '.$trace[0]['line'], E_USER_NOTICE);
+		return null;
+	}
+
+	public function __toString()
+	{
+		return '['.$this->tagName.']';
+	}
+}
+?>