| 1 |
706 |
jeremybenn |
------------------------------------------------------------------------------
|
| 2 |
|
|
-- --
|
| 3 |
|
|
-- GNAT RUN-TIME COMPONENTS --
|
| 4 |
|
|
-- --
|
| 5 |
|
|
-- S Y S T E M . W C H _ W T S --
|
| 6 |
|
|
-- --
|
| 7 |
|
|
-- B o d y --
|
| 8 |
|
|
-- --
|
| 9 |
|
|
-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
|
| 10 |
|
|
-- --
|
| 11 |
|
|
-- GNAT is free software; you can redistribute it and/or modify it under --
|
| 12 |
|
|
-- terms of the GNU General Public License as published by the Free Soft- --
|
| 13 |
|
|
-- ware Foundation; either version 3, or (at your option) any later ver- --
|
| 14 |
|
|
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
|
| 15 |
|
|
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
|
| 16 |
|
|
-- or FITNESS FOR A PARTICULAR PURPOSE. --
|
| 17 |
|
|
-- --
|
| 18 |
|
|
-- As a special exception under Section 7 of GPL version 3, you are granted --
|
| 19 |
|
|
-- additional permissions described in the GCC Runtime Library Exception, --
|
| 20 |
|
|
-- version 3.1, as published by the Free Software Foundation. --
|
| 21 |
|
|
-- --
|
| 22 |
|
|
-- You should have received a copy of the GNU General Public License and --
|
| 23 |
|
|
-- a copy of the GCC Runtime Library Exception along with this program; --
|
| 24 |
|
|
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
|
| 25 |
|
|
-- <http://www.gnu.org/licenses/>. --
|
| 26 |
|
|
-- --
|
| 27 |
|
|
-- GNAT was originally developed by the GNAT team at New York University. --
|
| 28 |
|
|
-- Extensive contributions were provided by Ada Core Technologies Inc. --
|
| 29 |
|
|
-- --
|
| 30 |
|
|
------------------------------------------------------------------------------
|
| 31 |
|
|
|
| 32 |
|
|
with System.WCh_Con; use System.WCh_Con;
|
| 33 |
|
|
with System.WCh_Cnv; use System.WCh_Cnv;
|
| 34 |
|
|
|
| 35 |
|
|
package body System.WCh_WtS is
|
| 36 |
|
|
|
| 37 |
|
|
-----------------------
|
| 38 |
|
|
-- Local Subprograms --
|
| 39 |
|
|
-----------------------
|
| 40 |
|
|
|
| 41 |
|
|
procedure Store_UTF_32_Character
|
| 42 |
|
|
(U : UTF_32_Code;
|
| 43 |
|
|
S : out String;
|
| 44 |
|
|
P : in out Integer;
|
| 45 |
|
|
EM : WC_Encoding_Method);
|
| 46 |
|
|
-- Stores the string representation of the wide or wide wide character
|
| 47 |
|
|
-- whose code is given as U, starting at S (P + 1). P is incremented to
|
| 48 |
|
|
-- point to the last character stored. Raises CE if character cannot be
|
| 49 |
|
|
-- stored using the given encoding method.
|
| 50 |
|
|
|
| 51 |
|
|
----------------------------
|
| 52 |
|
|
-- Store_UTF_32_Character --
|
| 53 |
|
|
----------------------------
|
| 54 |
|
|
|
| 55 |
|
|
procedure Store_UTF_32_Character
|
| 56 |
|
|
(U : UTF_32_Code;
|
| 57 |
|
|
S : out String;
|
| 58 |
|
|
P : in out Integer;
|
| 59 |
|
|
EM : WC_Encoding_Method)
|
| 60 |
|
|
is
|
| 61 |
|
|
procedure Out_Char (C : Character);
|
| 62 |
|
|
pragma Inline (Out_Char);
|
| 63 |
|
|
-- Procedure to increment P and store C at S (P)
|
| 64 |
|
|
|
| 65 |
|
|
procedure Store_Chars is new UTF_32_To_Char_Sequence (Out_Char);
|
| 66 |
|
|
|
| 67 |
|
|
--------------
|
| 68 |
|
|
-- Out_Char --
|
| 69 |
|
|
--------------
|
| 70 |
|
|
|
| 71 |
|
|
procedure Out_Char (C : Character) is
|
| 72 |
|
|
begin
|
| 73 |
|
|
P := P + 1;
|
| 74 |
|
|
S (P) := C;
|
| 75 |
|
|
end Out_Char;
|
| 76 |
|
|
|
| 77 |
|
|
begin
|
| 78 |
|
|
Store_Chars (U, EM);
|
| 79 |
|
|
end Store_UTF_32_Character;
|
| 80 |
|
|
|
| 81 |
|
|
---------------------------
|
| 82 |
|
|
-- Wide_String_To_String --
|
| 83 |
|
|
---------------------------
|
| 84 |
|
|
|
| 85 |
|
|
function Wide_String_To_String
|
| 86 |
|
|
(S : Wide_String;
|
| 87 |
|
|
EM : WC_Encoding_Method) return String
|
| 88 |
|
|
is
|
| 89 |
|
|
R : String (S'First .. S'First + 5 * S'Length); -- worst case length!
|
| 90 |
|
|
RP : Natural;
|
| 91 |
|
|
|
| 92 |
|
|
begin
|
| 93 |
|
|
RP := R'First - 1;
|
| 94 |
|
|
for SP in S'Range loop
|
| 95 |
|
|
Store_UTF_32_Character (Wide_Character'Pos (S (SP)), R, RP, EM);
|
| 96 |
|
|
end loop;
|
| 97 |
|
|
|
| 98 |
|
|
return R (R'First .. RP);
|
| 99 |
|
|
end Wide_String_To_String;
|
| 100 |
|
|
|
| 101 |
|
|
--------------------------------
|
| 102 |
|
|
-- Wide_Wide_String_To_String --
|
| 103 |
|
|
--------------------------------
|
| 104 |
|
|
|
| 105 |
|
|
function Wide_Wide_String_To_String
|
| 106 |
|
|
(S : Wide_Wide_String;
|
| 107 |
|
|
EM : WC_Encoding_Method) return String
|
| 108 |
|
|
is
|
| 109 |
|
|
R : String (S'First .. S'First + 7 * S'Length); -- worst case length!
|
| 110 |
|
|
RP : Natural;
|
| 111 |
|
|
|
| 112 |
|
|
begin
|
| 113 |
|
|
RP := R'First - 1;
|
| 114 |
|
|
|
| 115 |
|
|
for SP in S'Range loop
|
| 116 |
|
|
Store_UTF_32_Character (Wide_Wide_Character'Pos (S (SP)), R, RP, EM);
|
| 117 |
|
|
end loop;
|
| 118 |
|
|
|
| 119 |
|
|
return R (R'First .. RP);
|
| 120 |
|
|
end Wide_Wide_String_To_String;
|
| 121 |
|
|
|
| 122 |
|
|
end System.WCh_WtS;
|
