Transformation/ContextFunctions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using Sprache;
 using XNeedle.Parser;
 using XNeedle.Parser.Elements;
@@ -45,6 +46,28 @@ namespace XNeedle.Transformation
             return txt;
         }
 
+        public static string cdata(Context ctx)
+        {
+            if (ctx.Node is null) return "";
+            var cdataNode = ctx.Node.Nodes().OfType<System.Xml.Linq.XCData>().FirstOrDefault();
+            return cdataNode?.Value ?? "";
+        }
+
+        public static string cdata(Context ctx, string txt)
+        {
+            if (ctx.Node is null) return "";
+            var cdataNode = ctx.Node.Nodes().OfType<System.Xml.Linq.XCData>().FirstOrDefault();
+            if (cdataNode != null)
+            {
+                cdataNode.Value = txt;
+            }
+            else
+            {
+                ctx.Node.Add(new System.Xml.Linq.XCData(txt));
+            }
+            return txt;
+        }
+
         public static string attr(Context ctx, string name, string value)
         {
             if (ctx.Node is null) return "";