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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . W C H _ C O N --
-- --
-- B o d y --
-- --
-- Copyright (C) 2005-2007, 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 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, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, 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. --
-- --
------------------------------------------------------------------------------
pragma Warnings (Off);
pragma Compiler_Unit;
pragma Warnings (On);
package body System.WCh_Con is
----------------------------
-- Get_WC_Encoding_Method --
----------------------------
function Get_WC_Encoding_Method (C : Character) return WC_Encoding_Method is
begin
for Method in WC_Encoding_Method loop
if C = WC_Encoding_Letters (Method) then
return Method;
end if;
end loop;
raise Constraint_Error;
end Get_WC_Encoding_Method;
function Get_WC_Encoding_Method (S : String) return WC_Encoding_Method is
begin
if S = "hex" then
return WCEM_Hex;
elsif S = "upper" then
return WCEM_Upper;
elsif S = "shift_jis" then
return WCEM_Shift_JIS;
elsif S = "euc" then
return WCEM_EUC;
elsif S = "utf8" then
return WCEM_UTF8;
elsif S = "brackets" then
return WCEM_Brackets;
else
raise Constraint_Error;
end if;
end Get_WC_Encoding_Method;
--------------------------
-- Is_Start_Of_Encoding --
--------------------------
function Is_Start_Of_Encoding
(C : Character;
EM : WC_Encoding_Method) return Boolean
is
begin
return (EM in WC_Upper_Half_Encoding_Method
and then Character'Pos (C) >= 16#80#)
or else (EM in WC_ESC_Encoding_Method and then C = ASCII.ESC);
end Is_Start_Of_Encoding;
end System.WCh_Con;
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