Rename Files & Folders Keywords - Using a CSV Look Up File - csv

Question

I would like to rename files and folders based on keywords found in a CSV file.
The CSV holds the search and replace keywords that will make up file and folder names.
Search | Replace
Document | DTX
Processing | PRX
Implementation | IMX
...
Not all the file names include each word in the file name.
Not all the folders will include each word in the folder name
Powershell will have to search the child item ie the folder and file
names.
If it finds the word (match) - Substitute from the CSV
I have looked at these threads to help me:
Using Powershell to recursively rename directories using a lookup file
powershell script to rename all files in directory
http://code.adonline.id.au/batch-rename-files/
I have only managed below snippet
$folder = "C:\Folders" #target folder containing files
$csv = "C:\FileNameKeywords.csv" #path to CSV file
cd ($folder);
Import-Csv ($csv) | foreach {
Rename-Item -Path $_.Path -NewName $_.Filename
}
It only replaces one at a time.
Question:
How can I recursively search and replace in file and Folder Names using a CSV as a look up or reference file.

Answer 1

When you have the need to look up values by other values the usual go-to data structure is a dictionary, or in PowerShell terms a hashtable. Read your CSV into a dictionary like this:
$keywords = #{}
Import-Csv $csv | ForEach-Object {
$keywords[$_.Search] = $_.Replace
}
Then traverse your folder tree and build the new filenames by replacing each key with its respective value:
Get-ChildItem $folder -Recurse | ForEach-Object {
$newname = $_.Name
foreach ($word in $keywords.Keys) {
$newname = $newname.Replace($word, $keywords[$word])
}
if ($_.Name -ne $newname) {
Rename-Item -Path $_.FullName -NewName $newname
}
}

Answer 2

ill give it a shot. I'm assuming search and replace are your headers in this scenario. this in addition to your $folder and $csv variables.
$csvobject=import-csv $csv
Foreach($obj in $csvobject){
$search=$obj.search
$replace=$obj.replace
get-childitem path $folder |where{$_.name -like "$($obj.search)"} | rename-item -newname {$_.name -replace "$search", "$replace"} }
The replace handles regex so u will need to make sure Any special characters are properly escaped.