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) 1995-2019, 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 function To_Upper (A : String) return String; 53 -- Folds all characters of string A to upper case 54 55 function To_Lower (A : Character) return Character; 56 -- Converts A to lower case if it is an upper case letter, otherwise 57 -- returns the input argument unchanged. 58 59 procedure To_Lower (A : in out String); 60 function To_Lower (A : String) return String; 61 -- Folds all characters of string A to lower case 62 63 procedure To_Mixed (A : in out String); 64 function To_Mixed (A : String) return String; 65 -- Converts A to mixed case (i.e. lower case, except for initial 66 -- character and any character after an underscore, which are 67 -- converted to upper case. 68 69end System.Case_Util; 70