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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUNTIME COMPONENTS --
+-- --
+-- S Y S T E M . C A S E _ U T I L --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 1995-2002 Ada Core Technologies, Inc. --
+-- --
+-- GNAT is free software; you can redistribute it and/or modify it under --
+-- terms of the GNU General Public License as published by the Free Soft- --
+-- ware Foundation; either version 2, or (at your option) any later ver- --
+-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
+-- for more details. You should have received a copy of the GNU General --
+-- Public License distributed with GNAT; see file COPYING. If not, write --
+-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
+-- MA 02111-1307, USA. --
+-- --
+-- As a special exception, if other files instantiate generics from this --
+-- unit, or you link this unit with other files to produce an executable, --
+-- this unit does not by itself cause the resulting executable to be --
+-- covered by the GNU General Public License. This exception does not --
+-- however invalidate any other reasons why the executable file might be --
+-- covered by the GNU Public License. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+package body System.Case_Util is
+
+ --------------
+ -- To_Lower --
+ --------------
+
+ function To_Lower (A : Character) return Character is
+ A_Val : constant Natural := Character'Pos (A);
+
+ begin
+ if A in 'A' .. 'Z'
+ or else A_Val in 16#C0# .. 16#D6#
+ or else A_Val in 16#D8# .. 16#DE#
+ then
+ return Character'Val (A_Val + 16#20#);
+ else
+ return A;
+ end if;
+ end To_Lower;
+
+ procedure To_Lower (A : in out String) is
+ begin
+ for J in A'Range loop
+ A (J) := To_Lower (A (J));
+ end loop;
+ end To_Lower;
+
+ --------------
+ -- To_Mixed --
+ --------------
+
+ procedure To_Mixed (A : in out String) is
+ Ucase : Boolean := True;
+
+ begin
+ for J in A'Range loop
+ if Ucase then
+ A (J) := To_Upper (A (J));
+ else
+ A (J) := To_Lower (A (J));
+ end if;
+
+ Ucase := A (J) = '_';
+ end loop;
+ end To_Mixed;
+
+ --------------
+ -- To_Upper --
+ --------------
+
+ function To_Upper (A : Character) return Character is
+ A_Val : constant Natural := Character'Pos (A);
+
+ begin
+ if A in 'a' .. 'z'
+ or else A_Val in 16#E0# .. 16#F6#
+ or else A_Val in 16#F8# .. 16#FE#
+ then
+ return Character'Val (A_Val - 16#20#);
+ else
+ return A;
+ end if;
+ end To_Upper;
+
+ procedure To_Upper (A : in out String) is
+ begin
+ for J in A'Range loop
+ A (J) := To_Upper (A (J));
+ end loop;
+ end To_Upper;
+
+end System.Case_Util;