1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                     S Y S T E M . C A S E _ U T I L                      --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1995-2013, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  Simple casing functions
33
34--  This package provides simple casing functions that do not require the
35--  overhead of the full casing tables found in Ada.Characters.Handling.
36
37--  Note that all the routines in this package are available to the user
38--  via GNAT.Case_Util, which imports all the entities from this package.
39
40pragma Compiler_Unit_Warning;
41
42package System.Case_Util is
43   pragma Pure;
44
45   --  Note: all the following functions handle the full Latin-1 set
46
47   function To_Upper (A : Character) return Character;
48   --  Converts A to upper case if it is a lower case letter, otherwise
49   --  returns the input argument unchanged.
50
51   procedure To_Upper (A : in out String);
52   --  Folds all characters of string A to upper case
53
54   function To_Lower (A : Character) return Character;
55   --  Converts A to lower case if it is an upper case letter, otherwise
56   --  returns the input argument unchanged.
57
58   procedure To_Lower (A : in out String);
59   --  Folds all characters of string A to lower case
60
61   procedure To_Mixed (A : in out String);
62   --  Converts A to mixed case (i.e. lower case, except for initial
63   --  character and any character after an underscore, which are
64   --  converted to upper case.
65
66end System.Case_Util;
67