gcc/ada/a-zzboio.adb

   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) 1997-2005, 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 2,  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.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 with Ada.Wide_Wide_Text_IO; use Ada.Wide_Wide_Text_IO;
  35 with Ada.Unchecked_Deallocation;
  36
  37 package body Ada.Wide_Wide_Text_IO.Wide_Wide_Bounded_IO is
  38
  39    type Wide_Wide_String_Access is access all Wide_Wide_String;
  40
  41    procedure Free (WWSA : in out Wide_Wide_String_Access);
  42    --  Perform an unchecked deallocation of a non-null string
  43
  44    ----------
  45    -- Free --
  46    ----------
  47
  48    procedure Free (WWSA : in out Wide_Wide_String_Access) is
  49       Null_Wide_Wide_String : constant Wide_Wide_String := "";
  50
  51       procedure Deallocate is
  52         new Ada.Unchecked_Deallocation (
  53           Wide_Wide_String, Wide_Wide_String_Access);
  54
  55    begin
  56       --  Do not try to free statically allocated null string
  57
  58       if WWSA.all /= Null_Wide_Wide_String then
  59          Deallocate (WWSA);
  60       end if;
  61    end Free;
  62
  63    --------------
  64    -- Get_Line --
  65    --------------
  66
  67    function Get_Line return Wide_Wide_Bounded.Bounded_Wide_Wide_String is
  68    begin
  69       return Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Get_Line);
  70    end Get_Line;
  71
  72    --------------
  73    -- Get_Line --
  74    --------------
  75
  76    function Get_Line
  77      (File : File_Type) return Wide_Wide_Bounded.Bounded_Wide_Wide_String
  78    is
  79    begin
  80       return Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Get_Line (File));
  81    end Get_Line;
  82
  83    --------------
  84    -- Get_Line --
  85    --------------
  86
  87    procedure Get_Line
  88      (Item : out Wide_Wide_Bounded.Bounded_Wide_Wide_String)
  89    is
  90       Buffer : Wide_Wide_String (1 .. 1000);
  91       Last   : Natural;
  92       Str1   : Wide_Wide_String_Access;
  93       Str2   : Wide_Wide_String_Access;
  94
  95    begin
  96       Get_Line (Buffer, Last);
  97       Str1 := new Wide_Wide_String'(Buffer (1 .. Last));
  98
  99       while Last = Buffer'Last loop
 100          Get_Line (Buffer, Last);
 101          Str2 := new Wide_Wide_String'(Str1.all & Buffer (1 .. Last));
 102          Free (Str1);
 103          Str1 := Str2;
 104       end loop;
 105
 106       Item := Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Str1.all);
 107    end Get_Line;
 108
 109    --------------
 110    -- Get_Line --
 111    --------------
 112
 113    procedure Get_Line
 114      (File : File_Type;
 115       Item : out Wide_Wide_Bounded.Bounded_Wide_Wide_String)
 116    is
 117       Buffer : Wide_Wide_String (1 .. 1000);
 118       Last   : Natural;
 119       Str1   : Wide_Wide_String_Access;
 120       Str2   : Wide_Wide_String_Access;
 121
 122    begin
 123       Get_Line (File, Buffer, Last);
 124       Str1 := new Wide_Wide_String'(Buffer (1 .. Last));
 125
 126       while Last = Buffer'Last loop
 127          Get_Line (File, Buffer, Last);
 128          Str2 := new Wide_Wide_String'(Str1.all & Buffer (1 .. Last));
 129          Free (Str1);
 130          Str1 := Str2;
 131       end loop;
 132
 133       Item := Wide_Wide_Bounded.To_Bounded_Wide_Wide_String (Str1.all);
 134    end Get_Line;
 135
 136    ---------
 137    -- Put --
 138    ---------
 139
 140    procedure Put
 141      (Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
 142    is
 143    begin
 144       Put (Wide_Wide_Bounded.To_Wide_Wide_String (Item));
 145    end Put;
 146
 147    ---------
 148    -- Put --
 149    ---------
 150
 151    procedure Put
 152      (File : File_Type;
 153       Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
 154    is
 155    begin
 156       Put (File, Wide_Wide_Bounded.To_Wide_Wide_String (Item));
 157    end Put;
 158
 159    --------------
 160    -- Put_Line --
 161    --------------
 162
 163    procedure Put_Line
 164      (Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
 165    is
 166    begin
 167       Put_Line (Wide_Wide_Bounded.To_Wide_Wide_String (Item));
 168    end Put_Line;
 169
 170    --------------
 171    -- Put_Line --
 172    --------------
 173
 174    procedure Put_Line
 175      (File : File_Type;
 176       Item : Wide_Wide_Bounded.Bounded_Wide_Wide_String)
 177    is
 178    begin
 179       Put_Line (File, Wide_Wide_Bounded.To_Wide_Wide_String (Item));
 180    end Put_Line;
 181
 182 end Ada.Wide_Wide_Text_IO.Wide_Wide_Bounded_IO;