1223695Sdfr------------------------------------------------------------------------------ 2223695Sdfr-- -- 3223695Sdfr-- GNAT RUN-TIME COMPONENTS -- 4223695Sdfr-- -- 5223695Sdfr-- S Y S T E M . W C H _ W T S -- 6223695Sdfr-- -- 7223695Sdfr-- S p e c -- 8223695Sdfr-- -- 9223695Sdfr-- Copyright (C) 1992-2009, Free Software Foundation, Inc. -- 10223695Sdfr-- -- 11223695Sdfr-- GNAT is free software; you can redistribute it and/or modify it under -- 12223695Sdfr-- terms of the GNU General Public License as published by the Free Soft- -- 13223695Sdfr-- ware Foundation; either version 3, or (at your option) any later ver- -- 14223695Sdfr-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15223695Sdfr-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16223695Sdfr-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17223695Sdfr-- -- 18223695Sdfr-- As a special exception under Section 7 of GPL version 3, you are granted -- 19223695Sdfr-- additional permissions described in the GCC Runtime Library Exception, -- 20223695Sdfr-- version 3.1, as published by the Free Software Foundation. -- 21223695Sdfr-- -- 22223695Sdfr-- You should have received a copy of the GNU General Public License and -- 23223695Sdfr-- a copy of the GCC Runtime Library Exception along with this program; -- 24223695Sdfr-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25223695Sdfr-- <http://www.gnu.org/licenses/>. -- 26223695Sdfr-- -- 27223695Sdfr-- GNAT was originally developed by the GNAT team at New York University. -- 28223695Sdfr-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29223695Sdfr-- -- 30223695Sdfr------------------------------------------------------------------------------ 31223695Sdfr 32223695Sdfr-- This package contains the routine used to convert wide strings and wide 33223695Sdfr-- wide strings to strings for use by wide and wide wide character attributes 34223695Sdfr-- (value, image etc.) and also by the numeric IO subpackages of 35223695Sdfr-- Ada.Text_IO.Wide_Text_IO and Ada.Text_IO.Wide_Wide_Text_IO. 36223695Sdfr 37223695Sdfrwith System.WCh_Con; 38223695Sdfr 39268932Sjhbpackage System.WCh_WtS is 40268932Sjhb pragma Pure; 41268932Sjhb 42268932Sjhb function Wide_String_To_String 43268932Sjhb (S : Wide_String; 44268932Sjhb EM : System.WCh_Con.WC_Encoding_Method) return String; 45268932Sjhb -- This routine simply takes its argument and converts it to a string, 46242935Sneel -- using the internal compiler escape sequence convention (defined in 47239073Sae -- package Widechar) to translate characters that are out of range 48268932Sjhb -- of type String. In the context of the Wide_Value attribute, the 49268932Sjhb -- argument is the original attribute argument, and the result is used 50241164Sae -- in a call to the corresponding Value attribute function. If the method 51223695Sdfr -- for encoding is a shift-in, shift-out convention, then it is assumed 52223695Sdfr -- that normal (non-wide character) mode holds at the start and end of 53223695Sdfr -- the result string. EM indicates the wide character encoding method. 54223695Sdfr -- Note: in the WCEM_Brackets case, we only use the brackets encoding 55223695Sdfr -- for characters greater than 16#FF#. The lowest index of the returned 56223695Sdfr -- String is equal to S'First. 57223695Sdfr 58223695Sdfr function Wide_Wide_String_To_String 59223695Sdfr (S : Wide_Wide_String; 60223695Sdfr EM : System.WCh_Con.WC_Encoding_Method) return String; 61223695Sdfr -- Same processing, except for Wide_Wide_String 62223695Sdfr 63223695Sdfrend System.WCh_WtS; 64223695Sdfr