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1 281 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT RUN-TIME COMPONENTS                         --
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--                                                                          --
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--                              G N A T . I O                               --
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--                                                                          --
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--                                 S p e c                                  --
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--                                                                          --
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--                     Copyright (C) 1995-2005, AdaCore                     --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
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-- for  more details.  You should have  received  a copy of the GNU General --
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-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
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-- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
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-- Boston, MA 02110-1301, USA.                                              --
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--                                                                          --
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-- As a special exception,  if other files  instantiate  generics from this --
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-- unit, or you link  this unit with other files  to produce an executable, --
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-- this  unit  does not  by itself cause  the resulting  executable  to  be --
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-- covered  by the  GNU  General  Public  License.  This exception does not --
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-- however invalidate  any other reasons why  the executable file  might be --
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-- covered by the  GNU Public License.                                      --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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--  A simple preelaborable subset of Text_IO capabilities
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--  A simple text I/O package that can be used for simple I/O functions in
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--  user programs as required. This package is also preelaborated, unlike
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--  Text_IO, and can thus be with'ed by preelaborated library units.
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--  Note that Data_Error is not raised by these subprograms for bad data.
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--  If such checks are needed then the regular Text_IO package must be used.
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package GNAT.IO is
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   pragma Preelaborate;
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   type File_Type is limited private;
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   --  Specifies file to be used (the only possibilities are Standard_Output
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   --  and Standard_Error). There is no Create or Open facility that would
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   --  allow more general use of file names.
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   function Standard_Output return File_Type;
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   function Standard_Error  return File_Type;
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   --  These functions are the only way to get File_Type values
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   procedure Get (X : out Integer);
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   procedure Get (C : out Character);
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   procedure Get_Line (Item : out String; Last : out Natural);
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   --  These routines always read from Standard_Input
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   procedure Put (File : File_Type; X : Integer);
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   procedure Put (X : Integer);
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   --  Output integer to specified file, or to current output file, same
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   --  output as if Ada.Text_IO.Integer_IO had been instantiated for Integer.
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   procedure Put (File : File_Type; C : Character);
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   procedure Put (C : Character);
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   --  Output character to specified file, or to current output file
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   procedure Put (File : File_Type; S : String);
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   procedure Put (S : String);
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   --  Output string to specified file, or to current output file
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   procedure Put_Line (File : File_Type; S : String);
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   procedure Put_Line (S : String);
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   --  Output string followed by new line to specified file, or to
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   --  current output file.
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   procedure New_Line (File : File_Type; Spacing : Positive := 1);
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   procedure New_Line (Spacing : Positive := 1);
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   --  Output new line character to specified file, or to current output file
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   procedure Set_Output (File : File_Type);
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   --  Set current output file, default is Standard_Output if no call to
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   --  Set_Output is made.
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private
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   type File_Type is (Stdout, Stderr);
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   --  Stdout = Standard_Output, Stderr = Standard_Error
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   pragma Inline (Standard_Error);
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   pragma Inline (Standard_Output);
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end GNAT.IO;

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