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Program TestStream;
uses classes;
Var Stream : TMemoryStream;
S,T : String;
begin
S:='ABCDEFGHIJKLMNOPQRSTUVWXYZ';
T:=S;
Writeln ('Creating stream.');
Stream:=TMemoryStream.Create;
Writeln ('Initial Size : ',Stream.Size);
Writeln ('Initial Position : ',Stream.Position);
Writeln ('Setting new size to 100');
Stream.Size:=100;
Writeln ('New Size : ',Stream.Size);
Writeln ('new Position : ',Stream.Position);
Stream.WriteByte (1);
Stream.WriteWord (2);
Stream.WriteDWord (3);
Stream.WriteBuffer (S[1],Length(S));
Writeln ('Size after write : ',Stream.Size);
Writeln ('Position after write : ',Stream.Position);
Writeln ('Truncating size');
Stream.Size:=Stream.Position;
Writeln ('Stream Size is : ',Stream.Size);
Writeln ('Stream Position : ',Stream.Position);
Writeln ('Seek to position 0 : ', Stream.Seek(0,soFromBeginning));
Writeln ('new Position : ',Stream.Position);
If Stream.ReadByte<>1 then Writeln ('First byte not 1');
If Stream.ReadWord<>2 then Writeln ('First word not 2');
If Stream.ReadDWord<>3 then Writeln ('First Word not 3');
If Stream.Read(T[1],Length(S))<>Length(S) then Writeln ('Couldn''t read string.');
Stream.WriteByte (1);
Stream.WriteWord (2);
Stream.WriteDWord (3);
Stream.WriteBuffer (S[1],Length(S));
Writeln ('Stream Size is : ',Stream.Size);
Stream.SaveToFile('Test2.dat');
Stream.Free;
end.
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