/usr/share/ada/adainclude/anet/anet-streams.adb is in libanet0.3.1-dev 0.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Copyright (C) 2012 secunet Security Networks AG
-- Copyright (C) 2012 Reto Buerki <reet@codelabs.ch>
-- Copyright (C) 2012 Adrian-Ken Rueegsegger <ken@codelabs.ch>
--
-- This program is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; either version 2 of the License, or (at your
-- option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
--
-- This program is distributed in the hope that it will be useful, but
-- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-- for more details.
--
-- As a special exception, if other files instantiate generics from this
-- unit, or you link this unit with other files to produce an
-- executable this unit does not by itself cause the resulting
-- executable to be covered by the GNU General Public License. This
-- exception does not however invalidate any other reasons why the
-- executable file might be covered by the GNU Public License.
--
package body Anet.Streams is
-------------------------------------------------------------------------
procedure Clear (Stream : in out Memory_Stream_Type)
is
begin
Stream.Buffer := (others => 0);
Stream.Write_Idx := Stream.Buffer'First;
Stream.Read_Idx := Stream.Buffer'First;
end Clear;
-------------------------------------------------------------------------
function Get_Buffer
(Stream : Memory_Stream_Type)
return Ada.Streams.Stream_Element_Array
is
begin
return Stream.Buffer (Stream.Buffer'First .. Stream.Write_Idx - 1);
end Get_Buffer;
-------------------------------------------------------------------------
procedure Read
(Stream : in out Memory_Stream_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset)
is
End_Idx : constant Stream_Element_Offset
:= Stream.Read_Idx + (Item'Length - 1);
begin
Item := Stream.Buffer (Stream.Read_Idx .. End_Idx);
Last := Item'Last;
Stream.Read_Idx := End_Idx + 1;
end Read;
-------------------------------------------------------------------------
procedure Set_Buffer
(Stream : in out Memory_Stream_Type;
Buffer : Ada.Streams.Stream_Element_Array)
is
begin
if Buffer'Length > Stream.Buffer'Last then
raise Stream_Error with "Setting raw buffer failed (overflow), "
& "increase size (offset" & Buffer'Length'Img & " requested, max is"
& Stream.Buffer'Last'Img & ")";
end if;
Stream.Clear;
Stream.Buffer (Stream.Buffer'First .. Buffer'Length) := Buffer;
end Set_Buffer;
-------------------------------------------------------------------------
procedure Write
(Stream : in out Memory_Stream_Type;
Item : Ada.Streams.Stream_Element_Array)
is
End_Idx : constant Stream_Element_Offset
:= Stream.Write_Idx + (Item'Length - 1);
begin
if End_Idx > Stream.Buffer'Last then
raise Stream_Error with "Stream buffer too small for object, "
& "increase size (offset" & End_Idx'Img & " requested, max is"
& Stream.Buffer'Last'Img & ")";
end if;
Stream.Buffer (Stream.Write_Idx .. End_Idx) := Item;
Stream.Write_Idx := End_Idx + 1;
end Write;
end Anet.Streams;
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