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--                                                                          --

--                         GNAT RUN-TIME COMPONENTS                         --

--                                                                          --

--                     S Y S T E M . C A S E _ U T I L                      --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 1995-2009, Free Software Foundation, 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 3,  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.                                     --

--                                                                          --

-- As a special exception under Section 7 of GPL version 3, you are granted --

-- additional permissions described in the GCC Runtime Library Exception,   --

-- version 3.1, as published by the Free Software Foundation.               --

--                                                                          --

-- You should have received a copy of the GNU General Public License and    --

-- a copy of the GCC Runtime Library Exception along with this program;     --

-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --

-- <http://www.gnu.org/licenses/>.                                          --

--                                                                          --

-- GNAT was originally developed  by the GNAT team at  New York University. --

-- Extensive contributions were provided by Ada Core Technologies Inc.      --

--                                                                          --

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--  Simple casing functions

--  This package provides simple casing functions that do not require the

--  overhead of the full casing tables found in Ada.Characters.Handling.

--  Note that all the routines in this package are available to the user

--  via GNAT.Case_Util, which imports all the entities from this package.

pragma Compiler_Unit;

package System.Case_Util is

   pragma Pure;

   --  Note: all the following functions handle the full Latin-1 set

   function To_Upper (A : Character) return Character;

   --  Converts A to upper case if it is a lower case letter, otherwise

   --  returns the input argument unchanged.

   procedure To_Upper (A : in out String);

   --  Folds all characters of string A to upper case

   function To_Lower (A : Character) return Character;

   --  Converts A to lower case if it is an upper case letter, otherwise

   --  returns the input argument unchanged.

   procedure To_Lower (A : in out String);

   --  Folds all characters of string A to lower case

   procedure To_Mixed (A : in out String);

   --  Converts A to mixed case (i.e. lower case, except for initial

   --  character and any character after an underscore, which are

   --  converted to upper case.

end System.Case_Util;