The 2011 Scripting Games Advanced Event 10: Use PowerShell to Create a Function to Create Temp Files

The 2011 Scripting Games Advanced Event 10: Use PowerShell to Create a Function to Create Temp Files

My personal script:
http://2011sg.poshcode.org/1811
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#
#
#  2011 Scripting Games Advanced Event 10: Use PowerShell to Create a Function to Create Temp Files
#
#  by F.Richard 2011-04
#  
#

#Requires -Version 2.0

Function CreateTempFile {
<#
.SYNOPSIS
  Create temp file 
.DESCRIPTION
  create temp file then return filename
.PARAMETER encoding
 write file in encoding format
 You can use: "Unicode", "UTF7", "UTF8", "UTF32", "ASCII","BigEndianUnicode", "Default","OEM"
 "Default" = ANSI format / Default parameter = "Default"
.PARAMETER notepad
 display temp file in notepad after creation
.EXAMPLE 
 "hahaha" | CreateTempFile
 write "hahaha" in a temp file and return filename
.EXAMPLE
 "hohoho" | CreateTempFile -notepad
 write "hohoho" in a temp file and display it in notepad then return filename
.EXAMPLE 
 dir C:\ | CreateTempFile -encoding unicode
 write directory of c:\ in a temp file in unicode format then return filename
#>
Param( 
  [Parameter(Mandatory = $true, Position = 0, ValueFromPipeLine = $true)]   
  [psobject] $inputdata,
   
  [Parameter(Mandatory = $false, Position = 1)]   
  [ValidateSet("Unicode", "UTF7", "UTF8", "UTF32", "ASCII","BigEndianUnicode", "Default","OEM")]
  [string] $Encoding="Default", 
  
  [Parameter(Mandatory = $false, Position = 2)]   
  [switch]$notepad, 
  [Switch]$Whatif
)
 
    # temp file name
    # use windows IO function but can use %temp%\(get-date).ToString('yyyyMMdd') 
    $tempfile = [System.IO.Path]::GetTempFileName()

    # create temp file
     Write-Debug "Create Temp file $tempFile"
     Write-Verbose "Create Temp file $tempFile"
    if ($Whatif) {
        Write-Host "What if: Create Temp file $tempFile"     
    } else {
        Out-File -filePath $tempFile -InputObject $inputdata -Encoding unicode
    }
    
    # open temp file in notepad if switch
    if ($notepad) {
        Write-Debug "Open file $tempFile in notepad"
        Write-Verbose "Open file $tempFile in notepad"
        if ($Whatif) {
            Write-Host "What if: Open file $tempFile in notepad"     
        } else {
            Notepad $tempFile | Out-Null
        }
    }

    # return temp filename    
    Write-Debug "return tempfile name"
    Write-Verbose "return tempfile name"
    if ($Whatif) {
        Write-Host "What if: return $tempFile"
        return  
    } else {
        return $tempfile
    }
}