--- a/dwt/dwthelper/utils.d	Fri Jan 25 14:23:28 2008 +0100
+++ b/dwt/dwthelper/utils.d	Fri Jan 25 19:16:45 2008 +0100
@@ -1,12 +1,17 @@
-/**
+/**
  * Authors: Frank Benoit <keinfarbton@googlemail.com>
  */
 module dwt.dwthelper.utils;
 
 public import dwt.dwthelper.System;
+public import Math = tango.math.Math;
 
 import tango.io.Stdout;
+import tango.stdc.stringz;
+import tango.text.Util;
 import tango.text.Unicode;
+import tango.text.convert.Utf;
+import tango.core.Exception;
 import tango.stdc.stdlib : exit;
 
 void implMissing( char[] file, uint line ){
@@ -45,3 +50,66 @@
     return r[0];
 }
 
+public int indexOf( char[] str, char searched ){
+    int res = tango.text.Util.locate( str, searched );
+    if( res is str.length ) res = -1;
+    return res;
+}
+
+public int indexOf( char[] str, char searched, int startpos ){
+    int res = tango.text.Util.locate( str, searched, startpos );
+    if( res is str.length ) res = -1;
+    return res;
+}
+
+public int indexOf(char[] str, char[] ch, int start){
+    int res = tango.text.Util.locatePattern( str, ch, start );
+    if( res is str.length ) res = -1;
+    return res;
+}
+
+public char[] substring( char[] str, int start ){
+    return str[ start .. $ ].dup;
+}
+
+public char[] substring( char[] str, int start, int end ){
+    return str[ start .. end ].dup;
+}
+
+public wchar[] substring( wchar[] str, int start ){
+    return str[ start .. $ ].dup;
+}
+
+public wchar[] substring( wchar[] str, int start, int end ){
+    return str[ start .. end ].dup;
+}
+
+public char charAt( char[] str, int pos ){
+    return str[ pos ];
+}
+
+static char[] toHex(uint value, bool prefix = true, int radix = 8){
+    return tango.text.convert.Integer.toString( 
+            value, 
+            radix is 10 ? tango.text.convert.Integer.Style.Signed :
+            radix is  8 ? tango.text.convert.Integer.Style.Octal  :
+            radix is 16 ? tango.text.convert.Integer.Style.Hex    :
+                          tango.text.convert.Integer.Style.Signed,
+            prefix ? tango.text.convert.Integer.Flags.Prefix : tango.text.convert.Integer.Flags.None
+            );
+}
+
+class NumberFormatException : IllegalArgumentException {
+    this( char[] e ){
+        super(e);
+    }
+    this( TracedException e ){
+        super(e.toString);
+    }
+}
+
+
+
+
+
+