1 ------------------------------------------------------------------------------
3 -- GNAT RUNTIME COMPONENTS --
9 -- Copyright (C) 1995-2002 Ada Core Technologies, Inc. --
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, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
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. --
29 -- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com). --
31 ------------------------------------------------------------------------------
33 -- A simple preelaborable subset of Text_IO capabilities
35 -- A simple text I/O package that can be used for simple I/O functions in
36 -- user programs as required. This package is also preelaborated, unlike
37 -- Text_IO, and can thus be with'ed by preelaborated library units.
39 -- Note that Data_Error is not raised by these subprograms for bad data.
40 -- If such checks are needed then the regular Text_IO package must be used.
43 pragma Preelaborate (IO);
45 type File_Type is limited private;
46 -- Specifies file to be used (the only possibilities are Standard_Output
47 -- and Standard_Error). There is no Create or Open facility that would
48 -- allow more general use of file names.
50 function Standard_Output return File_Type;
51 function Standard_Error return File_Type;
52 -- These functions are the only way to get File_Type values
54 procedure Get (X : out Integer);
55 procedure Get (C : out Character);
56 procedure Get_Line (Item : out String; Last : out Natural);
57 -- These routines always read from Standard_Input
59 procedure Put (File : File_Type; X : Integer);
60 procedure Put (X : Integer);
61 -- Output integer to specified file, or to current output file, same
62 -- output as if Ada.Text_IO.Integer_IO had been instantiated for Integer.
64 procedure Put (File : File_Type; C : Character);
65 procedure Put (C : Character);
66 -- Output character to specified file, or to current output file
68 procedure Put (File : File_Type; S : String);
69 procedure Put (S : String);
70 -- Output string to specified file, or to current output file
72 procedure Put_Line (File : File_Type; S : String);
73 procedure Put_Line (S : String);
74 -- Output string followed by new line to specified file, or to
75 -- current output file.
77 procedure New_Line (File : File_Type; Spacing : Positive := 1);
78 procedure New_Line (Spacing : Positive := 1);
79 -- Output new line character to specified file, or to current output file
81 procedure Set_Output (File : File_Type);
82 -- Set current output file, default is Standard_Output if no call to
83 -- Set_Output is made.
86 type File_Type is (Stdout, Stderr);
87 -- Stdout = Standard_Output, Stderr = Standard_Error
89 pragma Inline (Standard_Error);
90 pragma Inline (Standard_Output);