-----------------------------------------------------------------------
-- util-streams-files -- File Stream utilities
-- Copyright (C) 2010, 2013, 2017 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
package body Util.Streams.Files is
-- ------------------------------
-- Open the file and initialize the stream for reading or writing.
-- ------------------------------
procedure Open (Stream : in out File_Stream;
Mode : in Ada.Streams.Stream_IO.File_Mode;
Name : in String := "";
Form : in String := "") is
begin
Ada.Streams.Stream_IO.Open (Stream.File, Mode, Name, Form);
end Open;
-- ------------------------------
-- Create the file and initialize the stream for writing.
-- ------------------------------
procedure Create (Stream : in out File_Stream;
Mode : in Ada.Streams.Stream_IO.File_Mode;
Name : in String := "";
Form : in String := "") is
begin
Ada.Streams.Stream_IO.Create (Stream.File, Mode, Name, Form);
end Create;
-- ------------------------------
-- Close the stream.
-- ------------------------------
overriding
procedure Close (Stream : in out File_Stream) is
begin
Ada.Streams.Stream_IO.Close (Stream.File);
end Close;
-- ------------------------------
-- Write the buffer array to the output stream.
-- ------------------------------
overriding
procedure Write (Stream : in out File_Stream;
Buffer : in Ada.Streams.Stream_Element_Array) is
begin
Ada.Streams.Stream_IO.Write (Stream.File, Buffer);
end Write;
-- ------------------------------
-- Read into the buffer as many bytes as possible and return in
-- <b>last</b> the position of the last byte read.
-- ------------------------------
overriding
procedure Read (Stream : in out File_Stream;
Into : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset) is
begin
Ada.Streams.Stream_IO.Read (Stream.File, Into, Last);
end Read;
-- ------------------------------
-- Flush the stream and release the buffer.
-- ------------------------------
overriding
procedure Finalize (Object : in out File_Stream) is
begin
if Ada.Streams.Stream_IO.Is_Open (Object.File) then
Object.Close;
end if;
end Finalize;
end Util.Streams.Files;