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child_processes-standard_io.ads
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child_processes-standard_io.ads
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------------------------------------------------------------------------------
-- --
-- Ada User Repository Annex (AURA) --
-- ANNEXI-STRAYLINE Reference Implementation --
-- --
-- ------------------------------------------------------------------------ --
-- --
-- Copyright (C) 2020, ANNEXI-STRAYLINE Trans-Human Ltd. --
-- All rights reserved. --
-- --
-- Original Contributors: --
-- * Richard Wai (ANNEXI-STRAYLINE) --
-- --
-- Redistribution and use in source and binary forms, with or without --
-- modification, are permitted provided that the following conditions are --
-- met: --
-- --
-- * Redistributions of source code must retain the above copyright --
-- notice, this list of conditions and the following disclaimer. --
-- --
-- * Redistributions in binary form must reproduce the above copyright --
-- notice, this list of conditions and the following disclaimer in --
-- the documentation and/or other materials provided with the --
-- distribution. --
-- --
-- * Neither the name of the copyright holder nor the names of its --
-- contributors may be used to endorse or promote products derived --
-- from this software without specific prior written permission. --
-- --
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS --
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT --
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A --
-- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT --
-- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, --
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT --
-- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, --
-- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY --
-- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT --
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE --
-- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --
-- --
------------------------------------------------------------------------------
with Child_Processes.Platform;
private package Child_Processes.Standard_IO is
type Standard_IO_Stream is new Root_Stream_Type with
record
Handle : Platform.Stream_Handle;
Timeout: Duration := 0.0;
end record;
overriding
procedure Read (Stream: in out Standard_IO_Stream;
Item : out Stream_Element_Array;
Last : out Stream_Element_Offset);
-- Timeout indicates that Last is < Item'Last
overriding
procedure Write (Stream: in out Standard_IO_Stream;
Item : in Stream_Element_Array);
-- A timeout raises Storage_Error, since it would indicate a
-- full buffer
not overriding
procedure Read_Immediate (Stream: in out Standard_IO_Stream;
Item : out Stream_Element_Array;
Last : out Stream_Element_Offset);
-- Returns any data immediately available, and does not block
end Child_Processes.Standard_IO;