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jeremybenn |
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- S Y S T E M . W C H _ C O N --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2005-2009, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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pragma Compiler_Unit;
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package body System.WCh_Con is
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----------------------------
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-- Get_WC_Encoding_Method --
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----------------------------
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function Get_WC_Encoding_Method (C : Character) return WC_Encoding_Method is
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begin
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for Method in WC_Encoding_Method loop
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if C = WC_Encoding_Letters (Method) then
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return Method;
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end if;
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end loop;
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raise Constraint_Error;
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end Get_WC_Encoding_Method;
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function Get_WC_Encoding_Method (S : String) return WC_Encoding_Method is
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begin
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if S = "hex" then
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return WCEM_Hex;
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elsif S = "upper" then
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return WCEM_Upper;
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elsif S = "shift_jis" then
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return WCEM_Shift_JIS;
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elsif S = "euc" then
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return WCEM_EUC;
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elsif S = "utf8" then
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return WCEM_UTF8;
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elsif S = "brackets" then
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return WCEM_Brackets;
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else
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raise Constraint_Error;
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end if;
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end Get_WC_Encoding_Method;
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--------------------------
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-- Is_Start_Of_Encoding --
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--------------------------
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function Is_Start_Of_Encoding
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(C : Character;
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EM : WC_Encoding_Method) return Boolean
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is
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begin
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return (EM in WC_Upper_Half_Encoding_Method
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and then Character'Pos (C) >= 16#80#)
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or else (EM in WC_ESC_Encoding_Method and then C = ASCII.ESC);
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end Is_Start_Of_Encoding;
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end System.WCh_Con;
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