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1 | ------------------------------------------------------------------------------ |
2 | -- -- | |
3 | -- GNAT RUNTIME COMPONENTS -- | |
4 | -- -- | |
5 | -- G N A T . I O -- | |
6 | -- -- | |
7 | -- S p e c -- | |
8 | -- -- | |
bcea76b6 | 9 | -- Copyright (C) 1995-2002 Ada Core Technologies, Inc. -- |
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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, 59 Temple Place - Suite 330, Boston, -- | |
20 | -- MA 02111-1307, 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 | -- -- | |
fbf5a39b AC |
29 | -- GNAT was originally developed by the GNAT team at New York University. -- |
30 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
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31 | -- -- |
32 | ------------------------------------------------------------------------------ | |
33 | ||
34 | -- A simple preelaborable subset of Text_IO capabilities | |
35 | ||
36 | -- A simple text I/O package that can be used for simple I/O functions in | |
37 | -- user programs as required. This package is also preelaborated, unlike | |
07fc65c4 | 38 | -- Text_IO, and can thus be with'ed by preelaborated library units. |
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39 | |
40 | -- Note that Data_Error is not raised by these subprograms for bad data. | |
07fc65c4 | 41 | -- If such checks are needed then the regular Text_IO package must be used. |
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42 | |
43 | package GNAT.IO is | |
44 | pragma Preelaborate (IO); | |
45 | ||
46 | type File_Type is limited private; | |
47 | -- Specifies file to be used (the only possibilities are Standard_Output | |
48 | -- and Standard_Error). There is no Create or Open facility that would | |
49 | -- allow more general use of file names. | |
50 | ||
51 | function Standard_Output return File_Type; | |
52 | function Standard_Error return File_Type; | |
53 | -- These functions are the only way to get File_Type values | |
54 | ||
55 | procedure Get (X : out Integer); | |
56 | procedure Get (C : out Character); | |
bcea76b6 | 57 | procedure Get_Line (Item : out String; Last : out Natural); |
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58 | -- These routines always read from Standard_Input |
59 | ||
60 | procedure Put (File : File_Type; X : Integer); | |
61 | procedure Put (X : Integer); | |
62 | -- Output integer to specified file, or to current output file, same | |
63 | -- output as if Ada.Text_IO.Integer_IO had been instantiated for Integer. | |
64 | ||
65 | procedure Put (File : File_Type; C : Character); | |
66 | procedure Put (C : Character); | |
67 | -- Output character to specified file, or to current output file | |
68 | ||
69 | procedure Put (File : File_Type; S : String); | |
70 | procedure Put (S : String); | |
71 | -- Output string to specified file, or to current output file | |
72 | ||
73 | procedure Put_Line (File : File_Type; S : String); | |
74 | procedure Put_Line (S : String); | |
75 | -- Output string followed by new line to specified file, or to | |
76 | -- current output file. | |
77 | ||
78 | procedure New_Line (File : File_Type; Spacing : Positive := 1); | |
79 | procedure New_Line (Spacing : Positive := 1); | |
80 | -- Output new line character to specified file, or to current output file | |
81 | ||
82 | procedure Set_Output (File : File_Type); | |
83 | -- Set current output file, default is Standard_Output if no call to | |
84 | -- Set_Output is made. | |
85 | ||
86 | private | |
87 | type File_Type is (Stdout, Stderr); | |
88 | -- Stdout = Standard_Output, Stderr = Standard_Error | |
89 | ||
90 | pragma Inline (Standard_Error); | |
91 | pragma Inline (Standard_Output); | |
92 | ||
93 | end GNAT.IO; |