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// Copyright (c) 2010 Joe Moorhouse
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Threading;
using IronPython.Hosting;
using IronPython.Runtime;
using Microsoft.Scripting.Hosting;
using Microsoft.Scripting.Hosting.Providers;
using Microsoft.Scripting.Hosting.Shell;
namespace PythonConsoleControl
{
public delegate void ConsoleCreatedEventHandler(object sender, EventArgs e);
/// <summary>
/// Hosts the python console.
/// </summary>
public class PythonConsoleHost : ConsoleHost, IDisposable
{
Thread thread;
PythonTextEditor textEditor;
PythonConsole pythonConsole;
public event ConsoleCreatedEventHandler ConsoleCreated;
public PythonConsoleHost(PythonTextEditor textEditor)
{
this.textEditor = textEditor;
}
public PythonConsole Console
{
get { return pythonConsole; }
}
protected override Type Provider
{
get { return typeof(PythonContext); }
}
/// <summary>
/// Runs the console host in its own thread.
/// </summary>
public void Run()
{
thread = new Thread(RunConsole);
thread.IsBackground = true;
thread.Start();
}
public void Dispose()
{
if (pythonConsole != null)
{
pythonConsole.Dispose();
}
if (thread != null)
{
thread.Join();
}
}
protected override CommandLine CreateCommandLine()
{
return new PythonCommandLine();
}
protected override OptionsParser CreateOptionsParser()
{
return new PythonOptionsParser();
}
/// <remarks>
/// After the engine is created the standard output is replaced with our custom Stream class so we
/// can redirect the stdout to the text editor window.
/// This can be done in this method since the Runtime object will have been created before this method
/// is called.
/// </remarks>
protected override IConsole CreateConsole(ScriptEngine engine, CommandLine commandLine, ConsoleOptions options)
{
var pythonOutputStream = new PythonOutputStream(textEditor);
SetOutput(pythonOutputStream);
pythonConsole = new PythonConsole(textEditor, commandLine);
pythonOutputStream.TextWritten += pythonConsole.OutputWritten;
if (ConsoleCreated != null) ConsoleCreated(this, EventArgs.Empty);
return pythonConsole;
}
protected virtual void SetOutput(PythonOutputStream stream)
{
Runtime.IO.SetOutput(stream, Encoding.UTF8);
}
/// <summary>
/// Runs the console.
/// </summary>
void RunConsole()
{
this.Run(new string[] { "-X:FullFrames" });
}
protected override ScriptRuntimeSetup CreateRuntimeSetup()
{
ScriptRuntimeSetup srs = ScriptRuntimeSetup.ReadConfiguration();
foreach (var langSetup in srs.LanguageSetups)
{
if (langSetup.FileExtensions.Contains(".py"))
{
langSetup.Options["SearchPaths"] = new string[0];
}
}
return srs;
}
protected override void ParseHostOptions(string[] args)
{
// Python doesn't want any of the DLR base options.
foreach (string s in args)
{
Options.IgnoredArgs.Add(s);
}
}
protected override void ExecuteInternal()
{
if (PythonConfig.SearchPaths?.Any() ?? false)
{
var paths = Engine.GetSearchPaths().ToList();
paths.AddRange(PythonConfig.SearchPaths);
Engine.SetSearchPaths(paths);
}
var pc = HostingHelpers.GetLanguageContext(Engine) as PythonContext;
pc.SetModuleState(typeof(ScriptEngine), Engine);
base.ExecuteInternal();
}
}
}
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