How do I replace a path subset with another path in a cmd batch file?

Question

If I have a path C:\folder1\folder2\folder3\keyfolder\folder4\file.ext and a string keyfolder which corresponds to one of the subfolders in the path, how can I change the path root up until the keyfolder string to have a result such as C:\newfolder1\newfolder2\keyfolder\folder4\file.ext? Basically what I am trying to do is change the folder structure of a file up until a keyfolder folder.

SET OLD=C:\folder1\folder2\folder3\keyfolder\folder4\file.ext
SET KEY=keyfolder
SET NEW=C:\newfolder1\newfolder2

Now I just need to replace OLD with NEW up until KEY.

Thank you!

Andrew

Do you know how to search for a string? What have you tried? — Floris, Feb 12 '13 at 13:21
See http://stackoverflow.com/questions/7005951/batch-file-find-if-substring-is-in-string-not-in-a-file — Floris, Feb 12 '13 at 13:22
@Floris that linked helped loads and I managed to figure it out, thanks! — Andrew, Feb 12 '13 at 14:02
Great! Why don't you add what you discovered as the answer - it will help other people that have a similar problem, in the future. It's how we all help SO to be the best it can be... — Floris, Feb 12 '13 at 14:15

score 1 · Answer 1 · answered Feb 12 '13 at 17:05

This will work as long as the keyfolder name does not contain =.

@echo off
setlocal enableDelayedExpansion
set "OLD=C:\folder1\folder2\folder3\keyfolder\folder4\file.ext"
set "KEY=keyfolder"
set "NEW=C:\newfolder1\newfolder2"

set "MOD=%NEW%\%KEY%\!OLD:*\%KEY%\=!"
echo MOD=!MOD!

How do I replace a path subset with another path in a cmd batch file?

1 Answers1