Powershell replace text in multiple files lookup CSV

Question

Hiya guys
After some guidance please.
I have a CSV with following details
MailboxName, PRFNAME,TempConstant
usera, a, usera.prf,TEMPLATEPRFUSER
userb, b, userb.prf,TEMPLATEPRFUSER
userc, c, userc.prf,TEMPLATEPRFUSER
Im after creating multiple copies of a prf file with the PRFNAME
Import-Csv $UsernamesCSV | % { Copy-Item "C:\TemplatePRF\Template.prf" "C:\TEST\$($_.NewPRFName)"}
This creates multiple prfs named correctly based on the prfnames provided in the CSV
Now I want to search for mailboxname=TEMPLATEPRFUSER and replace to "MailboxName" from my csv.
so it will be
usera.PRF
ContentsMailboxname=user, a
userb.prf
contents
mailboxname=user, b
So the common field to replace will be TEMPALTEPRF but replace with the relevatnt mailboxname depending on prf name.
After looking around I found the following
Param (
#$List = "C:\TemplatePRF\mailbox.csv",
$Files = "c:\Test\*.prf"
$ReplacementList = Import-Csv $UsernamesCSV;
Get-ChildItem $Files |
ForEach-Object {
$Content = Get-Content -Path $_.FullName;
foreach ($ReplacementItem in $ReplacementList)
$Content = $Content.Replace($ReplacementItem.TEMPConstant, $ReplacementItem.mailboxn)
Set-Content -Path $_.FullName -Value $Content
At the moment all the files will then have the content "mailboxname=" set as user,a and it does not seem to loop through the remaining and replace correctly.

Answer 1

It looks like something along these lines should work, though the CSV data you posted is currently invalid. If you want to have a comma in a field (such as user, a), it needs to be quoted. Otherwise the comma is treated as a delimiter in the CSV.  Generally,
I would recommend just quoting everything, to avoid problems. That's what PowerShell does when you use Export-Csv. Here's the test file I used:
"MailboxName","PRFNAME"
"usera, a","usera.prf"
"userb, b","userb.prf"
"userc, c","userc.prf"
I got rid of the TempConstant field; there's no reason to repeat that data on every line of the CSV file.  It's just hard-coded in the script right now.  Here's the code:
$templateFile = 'C:\TemplatePRF\template.prf'
$csvFile = 'C:\TemplatePRF\mailbox.csv'
$outputDirectory = 'C:\TemplatePRF\New'
if (-not (Test-Path -Path $outputDirectory -PathType Container))
New-Item -Path $outputDirectory -ItemType Directory -ErrorAction Stop
$templateContents = Get-Content -Path $templateFile -ErrorAction Stop
Import-Csv -Path $csvFile |
ForEach-Object {
$record = $_
$newContents = $templateContents -replace '(?<=mailboxname\s*=\s*)%TEMPLATEPRFUSER%', $record.MailboxName
$newFile = Join-Path -Path $outputDirectory -ChildPath $record.PRFNAME
Set-Content -Path $newFile -Value $newContents