-- 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.Memory_Streams is
-----------
-- Clear --
-----------
procedure Clear (Self : in out Memory_Stream'Class) is
begin
Self.Data.Clear;
Self.Read := 0;
end Clear;
----------
-- Data --
----------
function Data (Self : Memory_Stream'Class)
return League.Stream_Element_Vectors.Stream_Element_Vector is
begin
return Self.Data;
end Data;
----------
-- Read --
----------
overriding procedure Read
(Self : in out Memory_Stream;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset)
is
use type Ada.Streams.Stream_Element_Offset;
Count : constant Ada.Streams.Stream_Element_Offset :=
Ada.Streams.Stream_Element_Offset'Min
(Item'Length, Self.Data.Length - Self.Read);
begin
for J in 1 .. Count loop
Item (Item'First + J - 1) := Self.Data.Element (Self.Read + J);
end loop;
Last := Item'First + Count - 1;
Self.Read := Self.Read + Count;
end Read;
-----------
-- Write --
-----------
overriding procedure Write
(Self : in out Memory_Stream;
Item : Ada.Streams.Stream_Element_Array) is
begin
Self.Data.Append (Item);
end Write;
-------------
-- Written --
-------------
function Written
(Self : Memory_Stream'Class) return Ada.Streams.Stream_Element_Count is
begin
return Self.Data.Length;
end Written;
end PB_Support.Memory_Streams;