1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                 ADA.WIDE_WIDE_TEXT_IO.WIDE_WIDE_BOUNDED_IO               --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1997-2009, 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
32with Ada.Wide_Wide_Text_IO; use Ada.Wide_Wide_Text_IO;
33with Ada.Unchecked_Deallocation;
34
35package body Ada.Wide_Wide_Text_IO.Wide_Wide_Bounded_IO is
36
37   type Wide_Wide_String_Access is access all Wide_Wide_String;
38
39   procedure Free (WWSA : in out Wide_Wide_String_Access);
40   --  Perform an unchecked deallocation of a non-null string
41
42   ----------
43   -- Free --
44   ----------
45
46   procedure Free (WWSA : in out Wide_Wide_String_Access) is
47      Null_Wide_Wide_String : constant Wide_Wide_String := "";
48
49      procedure Deallocate is
50        new Ada.Unchecked_Deallocation (
51          Wide_Wide_String, Wide_Wide_String_Access);
52
53   begin
54      --  Do not try to free statically allocated null string
55
56      if WWSA.all /= Null_Wide_Wide_String then
57         Deallocate (WWSA);
58      end if;
59   end Free;
60
61   --------------
62   -- Get_Line --
63   --------------
64
65   function Get_Line return Wide_Wide_Bounded.Bounded_Wide_Wide_String is
66   begin
67      return Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Get_Line);
68   end Get_Line;
69
70   --------------
71   -- Get_Line --
72   --------------
73
74   function Get_Line
75     (File : File_Type) return Wide_Wide_Bounded.Bounded_Wide_Wide_String
76   is
77   begin
78      return Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Get_Line (File));
79   end Get_Line;
80
81   --------------
82   -- Get_Line --
83   --------------
84
85   procedure Get_Line
86     (Item : out Wide_Wide_Bounded.Bounded_Wide_Wide_String)
87   is
88      Buffer : Wide_Wide_String (1 .. 1000);
89      Last   : Natural;
90      Str1   : Wide_Wide_String_Access;
91      Str2   : Wide_Wide_String_Access;
92
93   begin
94      Get_Line (Buffer, Last);
95      Str1 := new Wide_Wide_String'(Buffer (1 .. Last));
96
97      while Last = Buffer'Last loop
98         Get_Line (Buffer, Last);
99         Str2 := new Wide_Wide_String'(Str1.all & Buffer (1 .. Last));
100         Free (Str1);
101         Str1 := Str2;
102      end loop;
103
104      Item := Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Str1.all);
105   end Get_Line;
106
107   --------------
108   -- Get_Line --
109   --------------
110
111   procedure Get_Line
112     (File : File_Type;
113      Item : out Wide_Wide_Bounded.Bounded_Wide_Wide_String)
114   is
115      Buffer : Wide_Wide_String (1 .. 1000);
116      Last   : Natural;
117      Str1   : Wide_Wide_String_Access;
118      Str2   : Wide_Wide_String_Access;
119
120   begin
121      Get_Line (File, Buffer, Last);
122      Str1 := new Wide_Wide_String'(Buffer (1 .. Last));
123
124      while Last = Buffer'Last loop
125         Get_Line (File, Buffer, Last);
126         Str2 := new Wide_Wide_String'(Str1.all & Buffer (1 .. Last));
127         Free (Str1);
128         Str1 := Str2;
129      end loop;
130
131      Item := Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Str1.all);
132   end Get_Line;
133
134   ---------
135   -- Put --
136   ---------
137
138   procedure Put
139     (Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
140   is
141   begin
142      Put (Wide_Wide_Bounded.To_Wide_Wide_String (Item));
143   end Put;
144
145   ---------
146   -- Put --
147   ---------
148
149   procedure Put
150     (File : File_Type;
151      Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
152   is
153   begin
154      Put (File, Wide_Wide_Bounded.To_Wide_Wide_String (Item));
155   end Put;
156
157   --------------
158   -- Put_Line --
159   --------------
160
161   procedure Put_Line
162     (Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
163   is
164   begin
165      Put_Line (Wide_Wide_Bounded.To_Wide_Wide_String (Item));
166   end Put_Line;
167
168   --------------
169   -- Put_Line --
170   --------------
171
172   procedure Put_Line
173     (File : File_Type;
174      Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
175   is
176   begin
177      Put_Line (File, Wide_Wide_Bounded.To_Wide_Wide_String (Item));
178   end Put_Line;
179
180end Ada.Wide_Wide_Text_IO.Wide_Wide_Bounded_IO;
181