-- MIT License
--
-- Copyright (c) 2020 Max Reznik
--
-- Permission is hereby granted, free of charge, to any person obtaining a
-- copy of this software and associated documentation files (the "Software"),
-- to deal in the Software without restriction, including without limitation
-- the rights to use, copy, modify, merge, publish, distribute, sublicense,
-- and/or sell copies of the Software, and to permit persons to whom the
-- Software is furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-- THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-- FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-- DEALINGS IN THE SOFTWARE.
package body PB_Support.Stdio_Streams is
-----------
-- Flush --
-----------
procedure Flush (Self : in out Stdio_Stream'Class) is
Ignore : Interfaces.C_Streams.int;
begin
Ignore := Interfaces.C_Streams.fflush (Self.stdout);
end Flush;
----------------
-- Initialize --
----------------
procedure Initialize
(Self : in out Stdio_Stream'Class;
stdin : Interfaces.C_Streams.FILEs := Interfaces.C_Streams.stdin;
stdout : Interfaces.C_Streams.FILEs := Interfaces.C_Streams.stdout) is
begin
Self.stdin := stdin;
Self.stdout := stdout;
end Initialize;
----------
-- Read --
----------
overriding procedure Read
(Self : in out Stdio_Stream;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset)
is
use type Ada.Streams.Stream_Element_Count;
Size : constant Interfaces.C_Streams.size_t :=
Interfaces.C_Streams.fread
(buffer => Item'Address,
size => 1,
count => Item'Length,
stream => Self.stdin);
begin
Last := Item'First + Ada.Streams.Stream_Element_Count (Size) - 1;
end Read;
-----------
-- Write --
-----------
overriding procedure Write
(Self : in out Stdio_Stream;
Item : Ada.Streams.Stream_Element_Array)
is
use type Interfaces.C_Streams.size_t;
Size : constant Interfaces.C_Streams.size_t :=
Interfaces.C_Streams.fwrite
(buffer => Item'Address,
size => 1,
count => Item'Length,
stream => Self.stdout);
begin
pragma Assert (Size = Item'Length);
end Write;
end PB_Support.Stdio_Streams;