Creating Powershell script to run against Multiple XML Files: Correcting Nordic characters. Renaming only the files that were corrected.

Question

Greetings,
I am new to powershell and scripting and would like to create a powershell script to do the following to XML files.
I would like to change the data received in XML files that contains special Nordic characters: such as 
ä, Ä, é, ö, Ö, ü, Ü, and ß respectfully.
The file names that gets drop to me come in with the following naming convention: C54ABC_111120140500_1, C54ABC_111120140500_2, C54ABC_111120140500_3, C54ABC_111120140500_4 all the way to C54ABC_111120140500_12.
By automating the script, I would like the script to look into a directory containing these files and access the data within it and change the the data that has the special characters to the English Dictionary character equivalent.
e.g. ä for a, Ä for A, é for e, ö for o, Ö for O, ü for u, Ü for U, and ß for ss.
Once that step is complete. I would like to rename the file from C54ABC_111120140500_1.xml to C54ABC_111120140500_1_rctf.xml (adding an additional 5 characters to the end of a file that was corrected) if the file did not need any correction then renaming is
not needed.
the working directory (Source and destination) will remain in the same location. e.g. C:\Temp\
Currently I was able to come up with the following, however I am stuck when it comes to the renaming part since, it requires "IF and Else" statments .... I think.
$Source = "C:\Temp"
$Destination = "C:\Temp"
$regex33 = "\*.xml"
(Get-Content $regex33) |
ForEach-Object {$_ -replace "ä", "a" -replace "Ä", "A" -replace "é", "e" -replace "ö", "o" -replace "Ö", "O" -replace "ü", "u" -replace "Ü", "U" -replace "ß", "ss"}
#Rename-Item -NewName {$_.name -replace -whatif}
Your Assistance and Expertise is greatly appreciated.
Thank you in advance KC.

Answer 1

Hi KC
You could try something like this.
Let me know how you get on and if you've any questionds.
cheers, Tim
$Source = 'C:\Temp'
Set-Location $source
$xmlFiles = Get-ChildItem -Path $source -Filter *.xml
ForEach ($xmlFile in $xmlFiles)
  $content = Get-Content -Path $xmlFile.FullName
  $renameFile = $false
  Switch -Wildcard ($content) {
    '*ä*'
      $renameFile = $true
      $content = $content -creplace 'ä', 'a'
    '*Ä*'
      $renameFile = $true
      $content = $content -creplace 'Ä', 'A'
    '*é*'
      $renameFile = $true
      $content = $content -creplace 'é', 'e'
    '*ö*'
      $renameFile = $true
      $content = $content -creplace 'ö', 'o'
    '*Ö*'
      $renameFile = $true
      $content = $content -creplace 'Ö', 'O'
    '*ü*'
      $renameFile = $true
      $content = $content -creplace 'ü', 'u'
    '*Ü*'
      $renameFile = $true
      $content = $content -creplace 'Ü', 'U'
    '*ß*'
      $renameFile = $true
      $content = $content -creplace 'ß', 'ss'
  If ($renameFile)
    $newFileName = "$($xmlFile.BaseName)_rctf.xml"
    $content | Out-File -FilePath $xmlFile.FullName -Force
    Rename-Item -Path $xmlFile.PSChildName -NewName $newFileName