mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 09:19:39 +01:00
31 lines
740 B
ObjectPascal
31 lines
740 B
ObjectPascal
Program ex15;
|
|
|
|
{ Program to demonstrate the TStream.Flush method }
|
|
|
|
Uses Objects;
|
|
|
|
Var L : String;
|
|
P : PString;
|
|
S : PBufStream; { Only one with Flush implemented. }
|
|
|
|
begin
|
|
L:='Some constant string';
|
|
{ Buffer size of 100 }
|
|
S:=New(PBufStream,Init('test.dat',stcreate,100));
|
|
Writeln ('Writing "',L,'" to stream with handle ',S^.Handle);
|
|
S^.WriteStr(@L);
|
|
{ At this moment, there is no data on disk yet. }
|
|
S^.Flush;
|
|
{ Now there is. }
|
|
S^.WriteStr(@L);
|
|
{ Close calls flush first }
|
|
S^.Close;
|
|
Writeln ('Closed stream. File handle is ',S^.Handle);
|
|
S^.Open (stOpenRead);
|
|
P:=S^.ReadStr;
|
|
L:=P^;
|
|
DisposeStr(P);
|
|
Writeln ('Read "',L,'" from stream with handle ',S^.Handle);
|
|
S^.Close;
|
|
Dispose (S,Done);
|
|
end. |