| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . W C H _ W T S -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2005, 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, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with System.WCh_Con; use System.WCh_Con; |
| with System.WCh_Cnv; use System.WCh_Cnv; |
| |
| package body System.WCh_WtS is |
| |
| ----------------------- |
| -- Local Subprograms -- |
| ----------------------- |
| |
| procedure Store_UTF_32_Character |
| (U : UTF_32_Code; |
| S : out String; |
| P : in out Integer; |
| EM : WC_Encoding_Method); |
| -- Stores the string representation of the wide or wide wide character |
| -- whose code is given as U, starting at S (P + 1). P is incremented to |
| -- point to the last character stored. Raises CE if character cannot be |
| -- stored using the given encoding method. |
| |
| ---------------------------- |
| -- Store_UTF_32_Character -- |
| ---------------------------- |
| |
| procedure Store_UTF_32_Character |
| (U : UTF_32_Code; |
| S : out String; |
| P : in out Integer; |
| EM : WC_Encoding_Method) |
| is |
| procedure Out_Char (C : Character); |
| pragma Inline (Out_Char); |
| -- Procedure to increment P and store C at S (P) |
| |
| procedure Store_Chars is new UTF_32_To_Char_Sequence (Out_Char); |
| |
| -------------- |
| -- Out_Char -- |
| -------------- |
| |
| procedure Out_Char (C : Character) is |
| begin |
| P := P + 1; |
| S (P) := C; |
| end Out_Char; |
| |
| begin |
| Store_Chars (U, EM); |
| end Store_UTF_32_Character; |
| |
| --------------------------- |
| -- Wide_String_To_String -- |
| --------------------------- |
| |
| function Wide_String_To_String |
| (S : Wide_String; |
| EM : WC_Encoding_Method) return String |
| is |
| R : String (1 .. 5 * S'Length); -- worst case length! |
| RP : Natural; |
| |
| begin |
| RP := 0; |
| for SP in S'Range loop |
| Store_UTF_32_Character (Wide_Character'Pos (S (SP)), R, RP, EM); |
| end loop; |
| |
| return R (1 .. RP); |
| end Wide_String_To_String; |
| |
| -------------------------------- |
| -- Wide_Wide_Sring_To_String -- |
| -------------------------------- |
| |
| function Wide_Wide_String_To_String |
| (S : Wide_Wide_String; |
| EM : WC_Encoding_Method) return String |
| is |
| R : String (1 .. 7 * S'Length); -- worst case length! |
| RP : Natural; |
| |
| begin |
| RP := 0; |
| |
| for SP in S'Range loop |
| Store_UTF_32_Character (Wide_Wide_Character'Pos (S (SP)), R, RP, EM); |
| end loop; |
| |
| return R (1 .. RP); |
| end Wide_Wide_String_To_String; |
| |
| end System.WCh_WtS; |
