[IronPython] IronPython Stream
Michael Foord
fuzzyman at voidspace.org.uk
Mon Jul 14 21:11:45 CEST 2008
Michael Stephens wrote:
> I think I ran into some threading issues writing from the stream to
> the ui.
I can always invoke the write. In this case their are no multi-threading
concerns. Did you create your own stream or use an existing one?
Michael
> We wrote a callback (delegate) stream handler that we use for
> ironpython and some odd operations in asp.net <http://asp.net>. I
> wish .net made event based streams, and event based collections.
> Michael Stephens
>
> Electrical Engineering Graduate Student
> University of Wyoming
> falcon at uwyo.edu <mailto:falcon at uwyo.edu> or 89iroc at gmail.com
> <mailto:89iroc at gmail.com>
>
> On Mon, Jul 14, 2008 at 12:55 PM, Michael Foord
> <fuzzyman at voidspace.org.uk <mailto:fuzzyman at voidspace.org.uk>> wrote:
>
> Hello all,
>
> I'm diverting the standard ouput and standard error streams on a
> Python engine. I would like to provide a Stream that executes a
> callback on every write (rather than just collecting output as
> most of the examples show).
>
> Inheriting from 'Stream' is easy but requires implementing a
> tedious number of methods and properties. Inheriting from
> 'MemoryStream' and only overriding 'Write' (plus the constructor)
> works fine. I'm wondering if it is 'correct'? It is probably an
> abuse of MemoryStream - can this approach fail?
>
> internal class PythonStream: MemoryStream
> {
> TextBox _output;
> public PythonStream(TextBox textbox)
> {
> _output = textbox;
> }
>
> public override void Write(byte[] buffer, int offset, int count)
> {
> _output.AppendText(Encoding.UTF8.GetString(buffer, offset,
> count));
> }
> }
>
>
>
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