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jeremybenn |
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- S Y S T E M . W C H _ S T W --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1992-2009, 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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-- This package contains the routine used to convert strings to wide (wide)
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-- strings for use by wide (wide) image attribute.
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with System.WCh_Con;
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package System.WCh_StW is
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pragma Pure;
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procedure String_To_Wide_String
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(S : String;
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R : out Wide_String;
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L : out Natural;
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EM : System.WCh_Con.WC_Encoding_Method);
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-- This routine simply takes its argument and converts it to wide string
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-- format, storing the result in R (1 .. L), with L being set appropriately
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-- on return. The caller guarantees that R is long enough to accommodate
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-- the result. This is used in the context of the Wide_Image attribute,
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-- where the argument is the corresponding 'Image attribute. Any wide
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-- character escape sequences in the string are converted to the
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-- corresponding wide character value. No syntax checks are made, it is
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-- assumed that any such sequences are validly formed (this must be assured
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-- by the caller), and results from the fact that Wide_Image is only used
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-- on strings that have been built by the compiler, such as images of
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-- enumeration literals. If the method for encoding is a shift-in,
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-- shift-out convention, then it is assumed that normal (non-wide
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-- character) mode holds at the start and end of the argument string. EM
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-- indicates the wide character encoding method.
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-- Note: in the WCEM_Brackets case, the brackets escape sequence is used
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-- only for codes greater than 16#FF#.
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procedure String_To_Wide_Wide_String
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(S : String;
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R : out Wide_Wide_String;
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L : out Natural;
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EM : System.WCh_Con.WC_Encoding_Method);
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-- Same function with Wide_Wide_String output
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end System.WCh_StW;
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