Adds Get-PSMDArgumentCompleter

Author: indented-automation

PSModuleDevelopment/functions/utility/Get-PSMDArgumentCompleter.ps1

@@ -0,0 +1,67 @@
+function Get-PSMDArgumentCompleter
+{
+<#
+	.SYNOPSIS
+		Gets the registered argument completers.
+
+    .DESCRIPTION
+        This function can be used to serach the argument completers registered using either the Register-ArgumentCompleter command or created using the ArgumentCompleter attribute.
+
+	.PARAMETER CommandName
+		Filter the results to a specific command. Wildcards are supported.
+
+	.PARAMETER ParameterName
+		Filter results to a specific parameter name. Wildcards are supported.
+
+	.EXAMPLE
+		PS C:\> Get-PSMDArgumentCompleter
+
+        Get all argument completers in use in the current PowerShell session.
+
+#>
+	[CmdletBinding()]
+	Param (
+        [Parameter(Position = 1, ValueFromPipeline = $true, ValueFromPipelineByPropertyName)]
+        [Alias('Name')]
+        [String]
+        $CommandName = '*',
+
+        [String]
+        $ParameterName = '*'
+    )
+
+	begin
+	{
+        $internalExecutionContext = [PSFramework.Utility.UtilityHost]::GetExecutionContextFromTLS()
+        $customArgumentCompletersProperty = $internalExecutionContext.GetType().GetProperty(
+            'CustomArgumentCompleters',
+            [System.Reflection.BindingFlags]'NonPublic, Instance'
+        )
+        $customArgumentCompleters = $customArgumentCompletersProperty.GetGetMethod($true).Invoke(
+            $internalExecutionContext,
+            [System.Reflection.BindingFlags]'Instance, NonPublic, GetProperty',
+            $null,
+            @(),
+            $psculture
+        )
+	}
+	process
+	{
+        foreach ($argumentCompleter in $customArgumentCompleters.Keys)
+        {
+            $name, $parameter = $argumentCompleter -split ':'
+
+            if ($name -like $CommandName)
+            {
+                if ($parameter -like $ParameterName)
+                {
+                    New-Object PSObject -Property @{
+                        CommandName   = $name
+                        ParameterName = $parameter
+                        Definition    = $customArgumentCompleters[$argumentCompleter]
+                    }
+                }
+            }
+        }
+    }
+}