------------------------------------------------------------------------------ -- -- -- GNAT RUNTIME COMPONENTS -- -- -- -- S Y S T E M . W C H _ J I S -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992,1993,1994 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, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, 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. -- -- -- ------------------------------------------------------------------------------ -- This package contains routines used for converting between internal -- JIS codes and the two external forms we support (EUC and Shift-JIS) package System.WCh_JIS is pragma Pure (WCh_JIS); function EUC_To_JIS (EUC1, EUC2 : Character) return Wide_Character; -- Given the two bytes of a EUC representation, return the -- corresponding JIS code wide character. Raises Constraint_Error -- if the two characters are not a valid EUC encoding. procedure JIS_To_EUC (J : in Wide_Character; EUC1 : out Character; EUC2 : out Character); -- Given a wide character in JIS form, produce the corresponding -- two bytes of the EUC representation of this character. This is -- only used if J is not in the normal ASCII range, i.e. on entry -- we know that Wide_Character'Pos (J) >= 16#0080# and that we -- thus require a two byte EUC representation (ASCII codes appear -- unchanged as a single byte in EUC). No error checking is performed, -- the input code is assumed to be in an appropriate range. procedure JIS_To_Shift_JIS (J : in Wide_Character; SJ1 : out Character; SJ2 : out Character); -- Given a wide character code in JIS form, produce the corresponding -- two bytes of the Shift-JIS representation of this character. This -- is only used if J is not in the normal ASCII range, i.e. on entry -- we know that Wide_Character'Pos (J) >= 16#0080# and that we -- thus require a two byte EUC representation (ASCII codes appear -- unchanged as a single byte in EUC). No error checking is performed, -- the input code is assumed to be in an appropriate range (note in -- particular that input codes in the range 16#0080#-16#00FF#, i.e. -- Hankaku Kana, do not appear, since Shift JIS has no representation -- for such codes. function Shift_JIS_To_JIS (SJ1, SJ2 : Character) return Wide_Character; -- Given the two bytes of a Shift-JIS representation, return the -- corresponding JIS code wide character. Raises Constraint_Error if -- the two characters are not a valid shift-JIS encoding. end System.WCh_JIS;