Viewing a stream.

Hi,

is it possible to make a stream *visible*?

Like having a WriteStream (from a string) display in a Multiline Textedit?

I'm using the POP and SMTP Sockets package from Jose S. Calvo and I'd
like to *watch* what his package is writing to the TCP socket in a
multiline text view.

Günther

Günther,

> is it possible to make a stream *visible*?
>
> Like having a WriteStream (from a string) display in a Multiline Textedit?
>
> I'm using the POP and SMTP Sockets package from Jose S. Calvo and I'd
> like to *watch* what his package is writing to the TCP socket in a
> multiline text view.

Can't you just use the Transcript? Modify the appropriate methods
(#nextPut, #nextPutAll, #sendByteArray or whatever) so that they also
send to the Transcript as well as the Stream.

I usually find it's better to always convert them to a printable hex
string first using something like ...

(aByte printStringRadix: 16) copyFrom: 4

... so that you don't get involved with non-printable characters.  You
will obviously have to inject spaces and crs to make it readable.

If you want a longer lasting record then put a Stream of your own in a
Global variable and copy any bytes sent to that.  You can then inspect
it at any time to see what has occurred.

--
Ian

Use the Reply-To address to contact me.
Mail sent to the From address is ignored.

Günther,

> is it possible to make a stream *visible*?
>
> Like having a WriteStream (from a string) display in a Multiline Textedit?
>
> I'm using the POP and SMTP Sockets package from Jose S. Calvo and I'd
> like to *watch* what his package is writing to the TCP socket in a
> multiline text view.

Can't you just use the Transcript? Modify the appropriate methods
(#nextPut, #nextPutAll, #sendByteArray or whatever) so that they also
send to the Transcript as well as the Stream.

I usually find it's better to always convert them to a printable hex
string first using something like ...

(aByte printStringRadix: 16) copyFrom: 4

.. so that you don't get involved with non-printable characters.  You
will obviously have to inject spaces and crs to make it readable.

If you want a longer lasting record then put a Stream of your own in a
Global variable and copy any bytes sent to that.  You can then inspect
it at any time to see what has occurred.

--
Ian

Use the Reply-To address to contact me.
Mail sent to the From address is ignored.

Ian,

Ian Bartholomew schrieb:
So it's not possible to attach an "inspecting view" on the stream or
monitor it directly, but I'd have to duplicate stream access?

Günther

Guenther Schmidt escribió:

>>> is it possible to make a stream *visible*?
>>> Like having a WriteStream (from a string) display in a Multiline
>>> Textedit?

>>> I'm using the POP and SMTP Sockets package from Jose S. Calvo and I'd
>>> like to *watch* what his package is writing to the TCP socket in a
>>> multiline text view.

>> Can't you just use the Transcript? Modify the appropriate methods
>> (#nextPut, #nextPutAll, #sendByteArray or whatever) so that they also
>> send to the Transcript as well as the Stream.

> So it's not possible to attach an "inspecting view" on the stream or
> monitor it directly, but I'd have to duplicate stream access?

Use events. That would trigger a lot of events, but it's the less
coupled way of doing what you want. Make a view listen to those
events, and update its contents. Or make a wrapper around the
stream, to decorate it, and trigger the events.


--
Esteban A. Maringolo
[hidden email]