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Darwinism/Docker/PowerShell.vb

89 lines
3.0 KiB

Imports System.Collections.ObjectModel
Imports System.Management.Automation
Imports System.Management.Automation.Runspaces
Imports System.Runtime.CompilerServices
Imports System.Text
''' <summary>
''' PowerShell interface to VB.NET
''' </summary>
Public Class PowerShell
Friend ReadOnly logs As New List(Of String)
''' <summary>
'''
''' </summary>
''' <param name="command">
''' 会自动将回车符替换为空格
''' </param>
''' <returns></returns>
Default Public ReadOnly Property EVal(command As String) As String
<MethodImpl(MethodImplOptions.AggressiveInlining)>
Get
Return RunScript(scriptText:=command.TrimNewLine)
End Get
End Property
''' <summary>
''' Takes script text as input and runs it, then converts the results to a string to return to the user
''' </summary>
''' <param name="scriptText"></param>
''' <returns></returns>
''' <remarks>
''' https://blogs.msdn.microsoft.com/zainnab/2008/07/26/calling-a-powershell-script-from-your-net-code/
''' </remarks>
Public Function RunScript(scriptText As String) As String
' convert the script result into a single string
Dim out As New StringBuilder()
Dim results As Collection(Of PSObject) = RunPSScript(scriptText)
For Each obj As PSObject In results
out.AppendLine(obj.ToString())
Next
Call logs.Add(scriptText)
' return the results of the script that has
' now been converted to text
Return out.ToString()
End Function
''' <summary>
'''
''' </summary>
''' <param name="ps"></param>
''' <param name="outString">
''' add an extra command to transform the script output objects
''' into nicely formatted strings remove this line to get the
''' actual objects that the script returns. For example, the script
''' ``Get-Process`` returns a collection of <see cref="Process"/>
''' instances.
''' </param>
''' <returns></returns>
Public Function RunPSScript(ps$, Optional outString As Boolean = True) As Collection(Of PSObject)
' create Powershell runspace
Using myRunSpace As Runspace = RunspaceFactory.CreateRunspace()
' open it
Call myRunSpace.Open()
With myRunSpace.CreatePipeline()
' create a pipeline and feed it the script text
Call .Commands.AddScript(ps)
If outString Then
' add an extra command to transform the script output objects
' into nicely formatted strings remove this line to get the
' actual objects that the script returns. For example, the script
' "Get-Process" returns a collection of System.Diagnostics.Process
' instances.
Call .Commands.Add("Out-String")
End If
' execute the script
Return .Invoke()
End With
End Using
End Function
End Class