[IronPython] Redirecting input/output in IronPython 2.x

Paul Turbett sls at iinet.net.au
Mon May 26 16:48:03 PDT 2008


Try SourceCodeKind.SingleStatement in the call to 
CreateScriptScopeFromString.

L8r, Paul

JoeSox wrote:
> Dino,
>
> This way is not playing well with an overriding System.IO.Stream class
> I have written. I set SetOutput with this class which has a delegate
> listening for the output. I do 'source.Execute(scope);' but it doesn't
> seem to be doing the same thing as ExecuteToConsole (flushing). Any
> ideas on what the difference is?
> In IP1.1 I used to use ExecuteToConsole and the output stream was updated.
>
> Here is some of the basic code I am using to give some better idea on
> what I am talking about:
> -------------------------------------
> public ScriptEngine engine = ScriptRuntime.Create().GetEngine("py");
> public ScriptScope scope;
> scope = engine.CreateScope();
>
> //IPEStreamWrapper:Stream, and take delegate IPEngineResponse
> engine.Runtime.IO.SetOutput(new
> ITB2.IPEWrapper.IPEStreamWrapper(IPEWrapper.IPEStreamWrapper.IPEngineResponse),
> engine.Runtime.IO.InputEncoding);
> 	
> ScriptSource source = engine.CreateScriptSourceFromString(command,
> SourceCodeKind.Expression);
> object o = source.Execute(scope);
>
> IPEStreamWrapper.sbOutput.ToString(); //nothing, I don't see any
> MemoryStream Flushing in IPEStreamWrapper Stream class
> -------------------------------------
>
> Thanks, Joe
>
> On 4/17/08, Dino Viehland <dinov at exchange.microsoft.com> wrote:
>   
>>
>> You want
>> ScriptRuntime.IO.SetOutput/ScriptRuntime.IO.SetError which
>> will let you set the I/O used for all the ScriptEngine's running in the
>> given ScriptRuntime.  You also now need to provide either a Stream and an
>> Encoding or a Stream and a TextWriter.  The reason for that is to support
>> both text and binary output for scenarios such as PHP wanting to print a
>> JPG.
>>
>>
>>
>>
>> From: users-bounces at lists.ironpython.com
>> [mailto:users-bounces at lists.ironpython.com] On Behalf Of
>> David Seruyange
>> Sent: Thursday, April 17, 2008 10:59 AM
>> To: IronPython IronPython
>> Subject: [IronPython] Redirecting input/output in IronPython 2.x
>>
>>
>>
>>
>>
>> Hey everyone,
>>
>> looking at a lot of the samples online I see the following:
>>
>>       pythonEngine.SetStandardError(s);
>>
>>     
>       pythonEngine.SetStandardOutput(s);
>   
>> where s is some stream. The Python Engine doesn't seem to support that
>> method when I make a reference to IronPython 2.0. Am I missing something or
>> are the online resources now obsolete?
>>
>> Thanks much -
>>
>> David
>>
>>
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>>
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>>
>>     
>
>
>   

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