| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . W C H _ W T S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2009, 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 3, 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. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package contains the routine used to convert wide strings and wide |
| -- wide strings to strings for use by wide and wide wide character attributes |
| -- (value, image etc.) and also by the numeric IO subpackages of |
| -- Ada.Text_IO.Wide_Text_IO and Ada.Text_IO.Wide_Wide_Text_IO. |
| |
| with System.WCh_Con; |
| |
| package System.WCh_WtS is |
| pragma Pure; |
| |
| function Wide_String_To_String |
| (S : Wide_String; |
| EM : System.WCh_Con.WC_Encoding_Method) return String; |
| -- This routine simply takes its argument and converts it to a string, |
| -- using the internal compiler escape sequence convention (defined in |
| -- package Widechar) to translate characters that are out of range |
| -- of type String. In the context of the Wide_Value attribute, the |
| -- argument is the original attribute argument, and the result is used |
| -- in a call to the corresponding Value attribute function. If the method |
| -- for encoding is a shift-in, shift-out convention, then it is assumed |
| -- that normal (non-wide character) mode holds at the start and end of |
| -- the result string. EM indicates the wide character encoding method. |
| -- Note: in the WCEM_Brackets case, we only use the brackets encoding |
| -- for characters greater than 16#FF#. The lowest index of the returned |
| -- String is equal to S'First. |
| |
| function Wide_Wide_String_To_String |
| (S : Wide_Wide_String; |
| EM : System.WCh_Con.WC_Encoding_Method) return String; |
| -- Same processing, except for Wide_Wide_String |
| |
| end System.WCh_WtS; |
