Preprocess CDATA and text

Author: elmarco

src/preprocessor.vala

@@ -115,6 +115,12 @@ namespace Wixl {
                 case Xml.ReaderType.END_ELEMENT:
                     writer.end_element ();
                     break;
+                case Xml.ReaderType.TEXT:
+                    writer.write_string (eval (reader.const_value(), file));
+                    break;
+                case Xml.ReaderType.CDATA:
+                    writer.write_cdata (eval (reader.const_value(), file));
+                    break;
                 }
             }
             writer.end_document ();

vapi/libxml-2.0.vapi

@@ -1039,6 +1039,9 @@ namespace Xml {
 		[CCode (cname = "xmlTextWriterWriteString")]
 		public int write_string (string content);
 
+		[CCode (cname = "xmlTextWriterWriteCDATA")]
+		public int write_cdata (string content);
+
 		/* formatted */
 
 		[CCode (cname = "xmlTextWriterWriteFormatAttribute")]