READ-Event on #File.in ???

[gambas-3]

Hi everybody!!!

Is it possible to get a READ-Event on #File.in?

Background is: The external process, which is spawning my program, is a little
bit flaky regarding its timings. It pushes it's data randomly via STDOUT into
my prog.
When I use the "WHILE NOT Eof(File.In)"-Example taken from the online help, I
always get disconnected from the external process, after the WEND...but I
have to send some data back, too! ;-)
To bring some light into the dark: At first, i have to read the whole message
block (terminated by an empty line), after that, I'm able to send my onw data
back to the process.

If I didn't misunderstand the concepts of READ-Event, it sit's on the stream
and every time data arrives, it reads the incoming data automagically :-)

TIA
Stevie


-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Gambas-user mailing list
Gambas-user@...
https://lists.sourceforge.net/lists/listinfo/gambas-user

[Benoit Minisini]

On mercredi 09 juillet 2008, gambas@... wrote:

> Hi everybody!!!
>
> Is it possible to get a READ-Event on #File.in?
>
> Background is: The external process, which is spawning my program, is a
> little bit flaky regarding its timings. It pushes it's data randomly via
> STDOUT into my prog.
> When I use the "WHILE NOT Eof(File.In)"-Example taken from the online help,
> I always get disconnected from the external process, after the WEND...but I
> have to send some data back, too! ;-)
> To bring some light into the dark: At first, i have to read the whole
> message block (terminated by an empty line), after that, I'm able to send
> my onw data back to the process.
>
> If I didn't misunderstand the concepts of READ-Event, it sit's on the
> stream and every time data arrives, it reads the incoming data
> automagically :-)
>
> TIA
> Stevie
>

If you declare a STATIC PUBLIC SUB named Application_Read() in your startup
class, then you will get what you want: the File.In stream is watched, and
the Application_Read() function is called as soon as there is something to
read on the standard input.

Regards,

--
Benoit Minisini

-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Gambas-user mailing list
Gambas-user@...
https://lists.sourceforge.net/lists/listinfo/gambas-user

[gambas-3]

> If you declare a STATIC PUBLIC SUB named Application_Read() in your startup
> class, then you will get what you want: the File.In stream is watched, and
> the Application_Read() function is called as soon as there is something to
> read on the standard input.

Hi Benoit,

sorry, I couldn't find any further docu regarding
Apllication_READ(). ..nothing via "F1", nothing in the wiki. It's seem's  to
be one of the hidden secrets! ;-)
How do I get access on the data?? How must Application_Read() should look
like???
I'm pretty new to this OO-Stuff....so I depend on docu or examples!
....sorry!!

Greetz
Stevie


-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Gambas-user mailing list
Gambas-user@...
https://lists.sourceforge.net/lists/listinfo/gambas-user

[Ron Klinkien]

gambas@... schreef:

>> If you declare a STATIC PUBLIC SUB named Application_Read() in your startup
>> class, then you will get what you want: the File.In stream is watched, and
>> the Application_Read() function is called as soon as there is something to
>> read on the standard input.
>>    
>
> Hi Benoit,
>
> sorry, I couldn't find any further docu regarding
> Apllication_READ(). ..nothing via "F1", nothing in the wiki. It's seem's  to
> be one of the hidden secrets! ;-)
> How do I get access on the data?? How must Application_Read() should look
> like???
> I'm pretty new to this OO-Stuff....so I depend on docu or examples!
> ....sorry!!
>
> Greetz
> Stevie
>
>
>  

Can you get it triggered?

I have tried to get it running too, but my Application_Read() routine
never gets called, so I gave for that moment.
I'm not sure how it works either, sorry.

If someone knows, please put your example code here:
http://www.gambasdoc.org/help/comp/gb/application/.read?en

Regards,
Ron_2nd


-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Gambas-user mailing list
Gambas-user@...
https://lists.sourceforge.net/lists/listinfo/gambas-user

[Benoit Minisini]

On jeudi 10 juillet 2008, Ron wrote:

> gambas@... schreef:
> >> If you declare a STATIC PUBLIC SUB named Application_Read() in your
> >> startup class, then you will get what you want: the File.In stream is
> >> watched, and the Application_Read() function is called as soon as there
> >> is something to read on the standard input.
> >
> > Hi Benoit,
> >
> > sorry, I couldn't find any further docu regarding
> > Apllication_READ(). ..nothing via "F1", nothing in the wiki. It's seem's
> > to be one of the hidden secrets! ;-)
> > How do I get access on the data?? How must Application_Read() should look
> > like???
> > I'm pretty new to this OO-Stuff....so I depend on docu or examples!
> > ....sorry!!
> >
> > Greetz
> > Stevie
>
> Can you get it triggered?
>
> I have tried to get it running too, but my Application_Read() routine
> never gets called, so I gave for that moment.
> I'm not sure how it works either, sorry.
>
> If someone knows, please put your example code here:
> http://www.gambasdoc.org/help/comp/gb/application/.read?en
>
> Regards,
> Ron_2nd
>

It worked when I implemented it, but now there is a bug that I'm currently
trying to fix. Stay tune...

--
Benoit Minisini

-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Gambas-user mailing list
Gambas-user@...
https://lists.sourceforge.net/lists/listinfo/gambas-user

[Benoit Minisini]

On jeudi 10 juillet 2008, Benoit Minisini wrote:

> On jeudi 10 juillet 2008, Ron wrote:
> > gambas@... schreef:
> > >> If you declare a STATIC PUBLIC SUB named Application_Read() in your
> > >> startup class, then you will get what you want: the File.In stream is
> > >> watched, and the Application_Read() function is called as soon as
> > >> there is something to read on the standard input.
> > >
> > > Hi Benoit,
> > >
> > > sorry, I couldn't find any further docu regarding
> > > Apllication_READ(). ..nothing via "F1", nothing in the wiki. It's
> > > seem's to be one of the hidden secrets! ;-)
> > > How do I get access on the data?? How must Application_Read() should
> > > look like???
> > > I'm pretty new to this OO-Stuff....so I depend on docu or examples!
> > > ....sorry!!
> > >
> > > Greetz
> > > Stevie
> >
> > Can you get it triggered?
> >
> > I have tried to get it running too, but my Application_Read() routine
> > never gets called, so I gave for that moment.
> > I'm not sure how it works either, sorry.
> >
> > If someone knows, please put your example code here:
> > http://www.gambasdoc.org/help/comp/gb/application/.read?en
> >
> > Regards,
> > Ron_2nd
>
> It worked when I implemented it, but now there is a bug that I'm currently
> trying to fix. Stay tune...

OK, a stupid bug was fixed in revision #1445.

--
Benoit Minisini

-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Gambas-user mailing list
Gambas-user@...
https://lists.sourceforge.net/lists/listinfo/gambas-user

[Benoit Minisini]

On jeudi 10 juillet 2008, gambas@... wrote:

> > If you declare a STATIC PUBLIC SUB named Application_Read() in your
> > startup class, then you will get what you want: the File.In stream is
> > watched, and the Application_Read() function is called as soon as there
> > is something to read on the standard input.
>
> Hi Benoit,
>
> sorry, I couldn't find any further docu regarding
> Apllication_READ(). ..nothing via "F1", nothing in the wiki. It's seem's
> to be one of the hidden secrets! ;-)

The Application_Read global event handler is documented in the Application
class documentation page. But you won't get more information than I wrote
you.

> How do I get access on the data?? How must Application_Read() should look
> like???
> I'm pretty new to this OO-Stuff....so I depend on docu or examples!
> ....sorry!!
>
> Greetz
> Stevie
>

You must understand how watched file objects work. A file is an object of
class "File" that will raise events when it is watched: the Read event when
there is something to read on that File object, the Write event when there is
something to write.

As the standard input is a special case, I defined the "Application_Read"
static public method as the global "Read" event handler for the standard
input, provided that this method is defined in the startup class.

Here is a little example that write on a file the standard input. But you must
upgrade to revision #1445 to be sure that it will work!

' Gambas module

PRIVATE $hOut AS File

PUBLIC SUB Main()
  $hOut = OPEN "~/output.txt" FOR WRITE CREATE
END

PUBLIC SUB Application_Read()
  DIM sData AS String
  READ sData, -256
  IF Len(sData) = 0 THEN ' Means that the input was closed
    CLOSE #File.In
    CLOSE #$hOut
  ELSE
    WRITE #$hOut, sData, Len(sData)
  ENDIF
END

Regards,

--
Benoit Minisini

-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
Gambas-user mailing list
Gambas-user@...
https://lists.sourceforge.net/lists/listinfo/gambas-user