[GeoNetwork-commit] SF.net SVN: geonetwork: [435] trunk/web/scripts/core/kernel/xml.js

[<aca...@us...>]

Revision: 435
          http://geonetwork.svn.sourceforge.net/geonetwork/?rev=435&view=rev
Author:   acarboni
Date:     2007-05-27 08:26:02 -0700 (Sun, 27 May 2007)

Log Message:
-----------
Added xpath support for [@attr='value'] expressions

Modified Paths:
--------------
    trunk/web/scripts/core/kernel/xml.js

Modified: trunk/web/scripts/core/kernel/xml.js
===================================================================
--- trunk/web/scripts/core/kernel/xml.js	2007-05-26 17:23:32 UTC (rev 434)
+++ trunk/web/scripts/core/kernel/xml.js	2007-05-27 15:26:02 UTC (rev 435)
@@ -11,7 +11,7 @@
 
 xml.escape = function(text)
 {
-	if (text == '')
+	if (text == '' || text == null)
 		return text;
 		
 	return text	.replace(/&/g, "&")
@@ -139,13 +139,14 @@
 			
 	for (var i=0; i<names.length; i++)
 	{	
+		var pathElem = xml.extractPathElem(names[i]);
+		var found    = false;
+				
 		node = node.firstChild;
 		
-		var found = false;
-		
 		while (node != null && !found)
 		{
-			if (node.nodeType == Node.ELEMENT_NODE && node.nodeName == names[i])
+			if (node.nodeType == Node.ELEMENT_NODE && xml.evalCond(node, pathElem))
 				found = true;
 			else
 				node = node.nextSibling;
@@ -159,6 +160,61 @@
 	return xml.textContent(node);
 }
 
+//-------------------------------------------------------------------------------------
+
+xml.extractPathElem = function(name)
+{
+	var res = {};
+	
+	res.NAME      = name;
+	res.CONDITION = '';
+	
+	var startPos = name.indexOf('[');
+	var endPos   = name.indexOf(']');
+	
+	if (startPos != -1)
+	{
+		res.NAME      = name.substring(0, startPos);
+		res.CONDITION = name.substring(startPos+1, endPos);
+	}
+	
+	return res;
+}
+
+//-------------------------------------------------------------------------------------
+
+xml.evalCond = function(node, pathElem)
+{
+	var name = pathElem.NAME;
+	var cond = pathElem.CONDITION;
+	
+	if (node.nodeName != name)
+		return false;
+		
+	if (cond == '')
+		return true;
+		
+	//--- handle attribute condition
+	
+	if (cond.startsWith('@'))
+	{
+		var equPos = cond.indexOf('=');
+		var attr   = cond.substring(1, equPos);
+		var value  = cond.substring(equPos +1);
+		
+		return (node.getAttribute(attr) == xml.stripQuotes(value));
+	}
+	
+	return false;
+}
+
+//-------------------------------------------------------------------------------------
+
+xml.stripQuotes = function(text)
+{
+	return text.substring(1, text.length -1);
+}
+
 //=====================================================================================
 
 xml.textContent = function(node)


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