Files
mpv.net/mpv.net/Scripting/PowerShell.cs
Frank Skare 32eed33c82 misc
2020-03-21 06:43:54 +01:00

124 lines
3.9 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Management.Automation;
using System.Management.Automation.Runspaces;
using System.Threading;
namespace ScriptHost
{
public class PowerShell
{
public Runspace Runspace { get; set; }
public Pipeline Pipeline { get; set; }
public string Module { get; set; }
public bool Print { get; set; }
public List<string> Scripts { get; } = new List<string>();
public string[] Parameters { get; }
public static List<PowerShell> Instances { get; } = new List<PowerShell>();
string BR = Environment.NewLine;
public object Invoke() => Invoke(null, null);
public object Invoke(string variable, object obj)
{
try
{
Runspace = RunspaceFactory.CreateRunspace();
Runspace.ApartmentState = ApartmentState.STA;
Runspace.Open();
Pipeline = Runspace.CreatePipeline();
foreach (string script in Scripts)
Pipeline.Commands.AddScript(script);
if (Parameters != null)
foreach (string param in Parameters)
foreach (Command command in Pipeline.Commands)
command.Parameters.Add(null, param);
Runspace.SessionStateProxy.SetVariable("ScriptHost", this);
if (!string.IsNullOrEmpty(variable))
Runspace.SessionStateProxy.SetVariable(variable, obj);
if (Print)
{
Pipeline.Output.DataReady += Output_DataReady;
Pipeline.Error.DataReady += Error_DataReady;
}
return Pipeline.Invoke();
}
catch (RuntimeException e)
{
string message = e.Message + BR + BR + e.ErrorRecord.ScriptStackTrace.Replace(
" <ScriptBlock>, <No file>", "") + BR + BR + Module + BR;
throw new PowerShellException(message);
}
catch (Exception e)
{
throw e;
}
}
public static string InvokeAndReturnString(string code, string varName, object varValue)
{
PowerShell ps = new PowerShell() { Print = false };
ps.Scripts.Add(code);
string ret = string.Join(Environment.NewLine, (ps.Invoke(varName, varValue)
as IEnumerable<object>).Select(item => item.ToString())).ToString();
ps.Runspace.Dispose();
return ret;
}
public void Output_DataReady(object sender, EventArgs e)
{
var output = sender as PipelineReader<PSObject>;
while (output.Count > 0)
ConsoleHelp.Write(output.Read(), Module);
}
public void Error_DataReady(object sender, EventArgs e)
{
var output = sender as PipelineReader<Object>;
while (output.Count > 0)
ConsoleHelp.WriteError(output.Read(), Module);
}
public void RedirectEventJobStreams(PSEventJob job)
{
if (Print)
{
job.Output.DataAdded += Output_DataAdded;
job.Error.DataAdded += Error_DataAdded;
}
}
void Output_DataAdded(object sender, DataAddedEventArgs e)
{
var output = sender as PSDataCollection<PSObject>;
ConsoleHelp.Write(output[e.Index], Module);
}
void Error_DataAdded(object sender, DataAddedEventArgs e)
{
var error = sender as PSDataCollection<ErrorRecord>;
ConsoleHelp.WriteError(error[e.Index], Module);
}
}
public class PowerShellException : Exception
{
public PowerShellException(string message) : base(message)
{
}
}
}