+ BinToHex and HexToBin from Marco added

rtl/objpas/classes/util.inc

@@ -24,9 +24,63 @@ begin
   Result:=True;
 end;
 
+
+procedure BinToHex(BinValue, HexValue: PChar; BinBufSize: Integer);
+Const
+  HexDigits='0123456789ABCDEF';
+var
+  i : longint;
+begin
+  for i:=0 to binbufsize-1 do
+    begin
+      HexValue[0]:=hexdigits[(ord(binvalue^) and 15)];
+      HexValue[1]:=hexdigits[(ord(binvalue^) shr 4)];
+      inc(hexvalue,2);
+      inc(binvalue);		
+    end;
+end;
+
+
+function HexToBin(HexValue, BinValue: PChar; BinBufSize: Integer): Integer;
+// more complex, have to accept more than bintohex
+// A..F    1000001
+// a..f    1100001
+// 0..9     110000
+var
+	i,j : integer;
+begin
+ i:=binbufsize;
+ while (i>0) do
+   begin
+     if hexvalue^ IN ['A'..'F','a'..'f'] then
+       j:=(ord(hexvalue^)+9) and 15
+     else
+       if hexvalue^ IN ['0'..'9'] then
+         j:=(ord(hexvalue^)) and 15
+     else
+       break;
+     inc(hexvalue);
+     if hexvalue^ IN ['A'..'F','a'..'f'] then
+       j:=j+((ord(hexvalue^)+9) and 15) shl 4
+     else
+       if hexvalue^ IN ['0'..'9'] then
+         j:=j+((ord(hexvalue^)) and 15) shl 4
+     else
+       break;
+     inc(hexvalue);
+     binvalue^:=chr(j);
+     inc(binvalue);
+     dec(i);
+   end;
+  result:=binbufsize-i;
+end;
+
 {
   $Log$
-  Revision 1.1  2003-10-06 21:01:06  peter
+  Revision 1.2  2005-02-03 20:17:05  florian
+    + BinToHex and HexToBin from Marco added
+
+  Revision 1.1  2003/10/06 21:01:06  peter
     * moved classes unit to rtl
 
   Revision 1.3  2002/09/07 15:15:26  peter