#requires -version 2.0

<#
 -----------------------------------------------------------------------------
 Script: LoadCmds.ps1
 Version: 2.0
 Author: Jeffery Hicks
    http://jdhitsolutions.com/blog
    http://twitter.com/JeffHicks
    http://www.ScriptingGeek.com
 Date: 9/22/2011
 Keywords: Scriptblock, variable
 Comments:

 "Those who forget to script are doomed to repeat their work."

  ****************************************************************
  * DO NOT USE IN A PRODUCTION ENVIRONMENT UNTIL YOU HAVE TESTED *
  * THOROUGHLY IN A LAB ENVIRONMENT. USE AT YOUR OWN RISK.  IF   *
  * YOU DO NOT UNDERSTAND WHAT THIS SCRIPT DOES OR HOW IT WORKS, *
  * DO NOT USE IT OUTSIDE OF A SECURE, TEST SETTING.             *
  ****************************************************************
 -----------------------------------------------------------------------------
 #>
 

[cmdletbinding()]

param (
[Parameter(Position=0)]
[ValidateNotNullorEmpty()]
[string]$Path="cmds.txt",
[string]$Delimiter="~",
[switch]$Passthru
)

Write-Verbose "Starting $($myinvocation.mycommand)"

if (Test-Path $path) {
  Write-Verbose "Processing $path"
  
 #filter out blanks and lines that start with a comment
 Get-Content $path | Where { ($_ -match $delimiter) -AND (!($_.Trim().StartsWith("#"))) } | 
 foreach -begin { $script:newvariables=@() } -process {
     #split the line at the ~
     $data=$_.Split("~")
     $sb=$data[0].Trim()
     $cmd=$data[1].Trim()
     Write-Verbose "Creating $sb"
     #add the scriptblock name to the array
     $script:newvariables+=$sb
     #create a script block object and assign it to the value variable
     $value=$executioncontext.InvokeCommand.NewScriptBlock($cmd)
     #define the new variable
     Set-Variable -name $sb -Value $value -Scope Global 
     }  -end {
  if ($Passthru) { 
   #write the new variables to the pipeline if -Passthru
   get-variable -Name $script:newvariables
  }
 } #close end
} #close if

else {
    Write-Warning "Failed to find $path"
 }

Write-Verbose "Ending $($myinvocation.mycommand)"
#end