summaryrefslogtreecommitdiff
path: root/gcc/ada/a-szuzti.adb
blob: 9d3916024996d2f43b875df1e8ed684e01401fd3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--             ADA.STRINGS.WIDE_WIDE_UNBOUNDED.WIDE_WIDE_TEXT_IO            --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1997-2008, 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 Ada.Wide_Wide_Text_IO; use Ada.Wide_Wide_Text_IO;

package body Ada.Strings.Wide_Wide_Unbounded.Wide_Wide_Text_IO is

   --------------
   -- Get_Line --
   --------------

   function Get_Line return Unbounded_Wide_Wide_String is
      Buffer : Wide_Wide_String (1 .. 1000);
      Last   : Natural;
      Str1   : Wide_Wide_String_Access;
      Str2   : Wide_Wide_String_Access;
      Result : Unbounded_Wide_Wide_String;

   begin
      Get_Line (Buffer, Last);
      Str1 := new Wide_Wide_String'(Buffer (1 .. Last));
      while Last = Buffer'Last loop
         Get_Line (Buffer, Last);
         Str2 := new Wide_Wide_String (1 .. Str1'Last + Last);
         Str2 (Str1'Range) := Str1.all;
         Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last);
         Free (Str1);
         Str1 := Str2;
      end loop;

      Result.Reference := Str1;
      Result.Last      := Str1'Length;
      return Result;
   end Get_Line;

   function Get_Line
     (File : Ada.Wide_Wide_Text_IO.File_Type) return Unbounded_Wide_Wide_String
   is
      Buffer : Wide_Wide_String (1 .. 1000);
      Last   : Natural;
      Str1   : Wide_Wide_String_Access;
      Str2   : Wide_Wide_String_Access;
      Result : Unbounded_Wide_Wide_String;

   begin
      Get_Line (File, Buffer, Last);
      Str1 := new Wide_Wide_String'(Buffer (1 .. Last));

      while Last = Buffer'Last loop
         Get_Line (File, Buffer, Last);
         Str2 := new Wide_Wide_String (1 .. Str1'Last + Last);
         Str2 (Str1'Range) := Str1.all;
         Str2 (Str1'Last + 1 .. Str2'Last) := Buffer (1 .. Last);
         Free (Str1);
         Str1 := Str2;
      end loop;

      Result.Reference := Str1;
      Result.Last      := Str1'Length;
      return Result;
   end Get_Line;

   procedure Get_Line (Item : out Unbounded_Wide_Wide_String) is
   begin
      Get_Line (Current_Input, Item);
   end Get_Line;

   procedure Get_Line
     (File : Ada.Wide_Wide_Text_IO.File_Type;
      Item : out Unbounded_Wide_Wide_String)
   is
   begin
      --  We are going to read into the string that is already there and
      --  allocated. Hopefully it is big enough now, if not, we will extend
      --  it in the usual manner using Realloc_For_Chunk.

      --  Make sure we start with at least 80 characters

      if Item.Reference'Last < 80 then
         Realloc_For_Chunk (Item, 80);
      end if;

      --  Loop to read data, filling current string as far as possible.
      --  Item.Last holds the number of characters read so far.

      Item.Last := 0;
      loop
         Get_Line
           (File,
            Item.Reference (Item.Last + 1 .. Item.Reference'Last),
            Item.Last);

         --  If we hit the end of the line before the end of the buffer, then
         --  we are all done, and the result length is properly set.

         if Item.Last < Item.Reference'Last then
            return;
         end if;

         --  If not enough room, double it and keep reading

         Realloc_For_Chunk (Item, Item.Last);
      end loop;
   end Get_Line;

   ---------
   -- Put --
   ---------

   procedure Put (U : Unbounded_Wide_Wide_String) is
   begin
      Put (U.Reference (1 .. U.Last));
   end Put;

   procedure Put (File : File_Type; U : Unbounded_Wide_Wide_String) is
   begin
      Put (File, U.Reference (1 .. U.Last));
   end Put;

   --------------
   -- Put_Line --
   --------------

   procedure Put_Line (U : Unbounded_Wide_Wide_String) is
   begin
      Put_Line (U.Reference (1 .. U.Last));
   end Put_Line;

   procedure Put_Line (File : File_Type; U : Unbounded_Wide_Wide_String) is
   begin
      Put_Line (File, U.Reference (1 .. U.Last));
   end Put_Line;

end Ada.Strings.Wide_Wide_Unbounded.Wide_Wide_Text_IO;