gcc/ada/g-io.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --                              G N A T . I O                               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.12 $
  10 --                                                                          --
  11 --           Copyright (C) 1995-2001 Ada Core Technologies, Inc.            --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com).   --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 package body GNAT.IO is
  36
  37    Current_Out : File_Type := Stdout;
  38    pragma Atomic (Current_Out);
  39    --  Current output file (modified by Set_Output)
  40
  41    ---------
  42    -- Get --
  43    ---------
  44
  45    procedure Get (X : out Integer) is
  46
  47       function Get_Int return Integer;
  48       pragma Import (C, Get_Int, "get_int");
  49
  50    begin
  51       X := Get_Int;
  52    end Get;
  53
  54    procedure Get (C : out Character) is
  55
  56       function Get_Char return Character;
  57       pragma Import (C, Get_Char, "get_char");
  58
  59    begin
  60       C := Get_Char;
  61    end Get;
  62
  63    --------------
  64    -- Get_Line --
  65    --------------
  66
  67    procedure Get_Line (Item : in out String; Last : out Natural) is
  68       C : Character;
  69
  70    begin
  71       for Nstore in Item'Range loop
  72          Get (C);
  73
  74          if C = ASCII.LF then
  75             Last := Nstore - 1;
  76             return;
  77
  78          else
  79             Item (Nstore) := C;
  80          end if;
  81       end loop;
  82
  83       Last := Item'Last;
  84    end Get_Line;
  85
  86    --------------
  87    -- New_Line --
  88    --------------
  89
  90    procedure New_Line (File : File_Type; Spacing : Positive := 1) is
  91    begin
  92       for J in 1 .. Spacing loop
  93          Put (File, ASCII.LF);
  94       end loop;
  95    end New_Line;
  96
  97    procedure New_Line (Spacing : Positive := 1) is
  98    begin
  99       New_Line (Current_Out, Spacing);
 100    end New_Line;
 101
 102    ---------
 103    -- Put --
 104    ---------
 105
 106    procedure Put (X : Integer) is
 107    begin
 108       Put (Current_Out, X);
 109    end Put;
 110
 111    procedure Put (File : File_Type; X : Integer) is
 112
 113       procedure Put_Int (X : Integer);
 114       pragma Import (C, Put_Int, "put_int");
 115
 116       procedure Put_Int_Stderr (X : Integer);
 117       pragma Import (C, Put_Int_Stderr, "put_int_stderr");
 118
 119    begin
 120       case File is
 121          when Stdout => Put_Int (X);
 122          when Stderr => Put_Int_Stderr (X);
 123       end case;
 124    end Put;
 125
 126    procedure Put (C : Character) is
 127    begin
 128       Put (Current_Out, C);
 129    end Put;
 130
 131    procedure Put (File : in File_Type; C : Character) is
 132
 133       procedure Put_Char (C : Character);
 134       pragma Import (C, Put_Char, "put_char");
 135
 136       procedure Put_Char_Stderr (C : Character);
 137       pragma Import (C, Put_Char_Stderr, "put_char_stderr");
 138
 139    begin
 140       case File is
 141          when Stdout => Put_Char (C);
 142          when Stderr => Put_Char_Stderr (C);
 143       end case;
 144    end Put;
 145
 146    procedure Put (S : String) is
 147    begin
 148       Put (Current_Out, S);
 149    end Put;
 150
 151    procedure Put (File : File_Type; S : String) is
 152    begin
 153       for J in S'Range loop
 154          Put (File, S (J));
 155       end loop;
 156    end Put;
 157
 158    --------------
 159    -- Put_Line --
 160    --------------
 161
 162    procedure Put_Line (S : String) is
 163    begin
 164       Put_Line (Current_Out, S);
 165    end Put_Line;
 166
 167    procedure Put_Line (File : File_Type; S : String) is
 168    begin
 169       Put (File, S);
 170       New_Line (File);
 171    end Put_Line;
 172
 173    ----------------
 174    -- Set_Output --
 175    ----------------
 176
 177    procedure Set_Output (File : in File_Type) is
 178    begin
 179       Current_Out := File;
 180    end Set_Output;
 181
 182    ---------------------
 183    -- Standard_Output --
 184    ---------------------
 185
 186    function Standard_Output return File_Type is
 187    begin
 188       return Stdout;
 189    end Standard_Output;
 190
 191    --------------------
 192    -- Standard_Error --
 193    --------------------
 194
 195    function Standard_Error return File_Type is
 196    begin
 197       return Stderr;
 198    end Standard_Error;
 199
 200 end GNAT.IO;