2006/6/7, Michael Van Canneyt <[EMAIL PROTECTED]>:
On Wed, 7 Jun 2006, Alexandre Leclerc wrote:
> 2006/6/7, Michael Van Canneyt <[EMAIL PROTECTED]>:
>> > So readln / writeln is not possible with streams. This is a problem.
>> > I'm actually loading a file, but I wanted to use streams internally to
>> > increase flexibility; I might exchange data with memory streams on the
>> > long run.
>>
>> You can use the file-to-stream bridge. Unit streamio:
>>
>> Procedure AssignStream(var F: Textfile; Stream: TStream);
>> Function GetStream(var F: TTextRec) : TStream;
>>
>> usage:
>>
>> Var
>> M : TStream;
>> F : Text;
>> l : String;
>>
>> begin
>> M:=TMyStream.Create;
>> Try
>> AssignStream(F,M);
>> Reset(F);
>> // Read your stuff here
>> ReadLn(L,F);
>> Close(F);
>> Finally
>> FreeAndNil(M);
>> end;
>> end;
>>
>> This will always work.
>
> It took me couple minutes to understand. This is very interesting. It
> still double the data in memory, like a TStringList;
No. There is just a simple 256 byte buffer, that's it.
> but I'm glad to
> see that. I see that low memory usage equals direct text access with
> readln/writeln. But I've no time to mess arround with that now.
>
> It is in an include file (.inc). how can I use such a file without {$i
> } ? Like in a use clause?
it's not an include file. streamio.pp is in fcl/inc
and is compiled and installed by default.
Are there any special directory/settings to change because the
compiler canT' find the unit (nor Lazarus editor)... fcl looks to be
'disconnected' from the paths.
--
Alexandre Leclerc
_________________________________________________________________
To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe" as the Subject
archives at http://www.lazarus.freepascal.org/mailarchives
