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Ada Programming/Libraries/Ada.Direct IO
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Ada.Direct_IO
__TOC__
Ada Direct_IO is a unit of the Predefined Language Environment since Ada 95.
Specification
Standard Ada library specification
Copyright (c) 2003-2018 Maxim Reznik <reznikmm@gmail.com>
Copyright (c) 2004-2016 AXE Consultants
Copyright (c) 2004, 2005, 2006 Ada-Europe
Copyright (c) 2000 The MITRE Corporation, Inc.
Copyright (c) 1992, 1993, 1994, 1995 Intermetrics, Inc.
SPDX-License-Identifier: BSD-3-Clause and LicenseRef-AdaReferenceManual
-------------------------------------------------------------------------
with Ada IO_Exceptions;
generic
type Element_Type is private;
package Ada Direct_IO is
type File_Type is limited private;
type File_Mode is (In_File, Inout_File, Out_File);
type Count is range 0 double_dot .. implementation_defined;
subtype Positive_Count is Count range 1 double_dot .. Count'Last;
File management
procedure Create (File : in out File_Type;
Mode : in File_Mode := Inout_File;
Name : in String := "";
Form : in String := "");
procedure Open (File : in out File_Type;
Mode : in File_Mode;
Name : in String;
Form : in String := "");
procedure Close (File : in out File_Type);
procedure Delete (File : in out File_Type);
procedure Reset (File : in out File_Type; Mode : in File_Mode);
procedure Reset (File : in out File_Type);
function Mode (File : in File_Type) return File_Mode;
function Name (File : in File_Type) return String;
function Form (File : in File_Type) return String;
function Is_Open (File : in File_Type) return Boolean;
Input and output operations
procedure Read (File : in File_Type; Item : out Element_Type;
From : in Positive_Count);
procedure Read (File : in File_Type; Item : out Element_Type);
procedure Write (File : in File_Type; Item : in Element_Type;
To : in Positive_Count);
procedure Write (File : in File_Type; Item : in Element_Type);
procedure Set_Index (File : in File_Type; To : in Positive_Count);
function Index (File : in File_Type) return Positive_Count;
function Size (File : in File_Type) return Count;
function End_Of_File (File : in File_Type) return Boolean;
Exceptions
Status_Error : exception renames IO_Exceptionsdot .Status_Error;
Mode_Error : exception renames IO_Exceptionsdot .Mode_Error;
Name_Error : exception renames IO_Exceptionsdot .Name_Error;
Use_Error : exception renames IO_Exceptionsdot .Use_Error;
Device_Error : exception renames IO_Exceptionsdot .Device_Error;
End_Error : exception renames IO_Exceptionsdot .End_Error;
Data_Error : exception renames IO_Exceptionsdot .Data_Error;
private
type File_Type is limited null record;
end Adadot .Direct_IO;
See also
Wikibook
Ada Programming/Libraries/Ada
Ada Programming/Input Output
Ada Reference Manual
Ada 95
A 8 4 The Generic Package Direct_IO
Ada 2005
A 8 4 The Generic Package Direct_IO
Ada 2012
A 8 4 The Generic Package Direct_IO
Open-Source Implementations
a-direio.ads a-direio.adb
streams/a-direio.ads streams/a-direio.adb