This will work for print statements inside the module, but not for
prints coming from arbitrary imported functions. I can't see how to
achive the separation without walking stack on each print.
On Jan 31, 2:45 am, Dino Viehland <di...@microsoft.com> wrote:
> Can you run each document on its own thread?
>
> Oh, it also looks like we actually flow CodeContext through to the caller.
> So you could do something like:
>
> class MyFile {
> public void write(CodeContext context, string data) {
> Scope curScope = context.Scope; // this gives you the
> module you're running in
>
> // handle write here keyed off of the scope object
> }
>
> }
>
> And replace sys.stdout with that.
>
> -----Original Message-----
> From: users-boun...@lists.ironpython.com
> [mailto:users-boun...@lists.ironpython.com] On Behalf Of Jeff Slutter
> Sent: Friday, January 30, 2009 6:41 PM
> To: Discussion of IronPython
> Subject: Re: [IronPython] Redirecting stdout/stderr, but with context
>
> Dino Viehland wrote:
> > You can always provide your own stream which is aware of what the
> > currentoutputwindow is. It could store this in a thread static or just
> > some variable that you update whenever the active window changes. You can
> > set that via ScriptRuntime.IO.OutputStream. You could conceptually do the
> > exact same thing from Python just by setting sys.stdout to a file-like
> > object which knows what the currentoutputwindow is.
>
> This is what I'm doing right now and that's where I'm having my problem.
> I don't think this is a solvable problem since theoutputstream is
> shared by all ScriptScopes, just as theoutputstream for
> System.Console.WriteLine is the same across the process.
>
> In a nutshell, I have this:
>
> class Document
> {
> void AppendOutput( string text )
> {
> m_buffer.Add(text);
> }
> List<string> m_buffer;
>
> }
>
> class ConsoleWindow: Form
> {
> public void WriteOutput( string text, Document doc )
> {
> doc.AppendOutput( text );
> if( doc == m_currentDisplayingDoc )
> {
> textBox.Text += text;
> }
> }
>
> }
>
> class DocWriter
> {
> public DocWriter( ConsoleWindow console, Document doc )
> {
> m_console = console;
> m_document = doc;
> }
>
> public void write(string text)
> {
> m_console.WriteOutput( text, m_document );
> }
> ConsoleWindow m_console;
> Document m_document;
>
> }
>
> void OnDocumentActivate(Document doc)
> {
> DocWriter writer = new DocWrite(guiConsole, doc);
> object sysObj = doc.scope.GetVariable("sys");
> m_engine.Operations.SetMember(sysObj, "stdout", writer);
> m_engine.Operations.SetMember(sysObj, "stderr", writer);
>
> }
>
> The problem is:
> If there is a script running on DocumentA, that is streamingoutput, and
> then I switch to DocumentB while DocumentA continues to run - theoutput
> for DocumentA starts appearing in the console window for DocumentB as if
> it was for B. This is because sysout is system wide and if I change it
> while DocumentA is writing, then it starts outputting to the new stream
> that was set (and that was registered with DocumentB).
>
> -Jeff
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