Change numbers in file name to pad4 with text either side

[Mick02]

Sorry if this has already been answered but I cannot seem to find an answer to suit my situation. For example, I have files named "m20 - SHAFT - Rev D - For Fabrication.pdf". The text can differ but there are always only 1 or 2 letters at the start & the number following the first or second letter can be a 1, 2, 3 or 4 digit number. I would like to change the number so it is 4 digits long. So, for the example, it would end up as "m0020 - SHAFT - Rev D - For Fabrication.pdf". Any help would be greatly appreciated.

[therube]

I would imagine that could be done with JavaScript renaming (pay feature)?

Otherwise, possible (?) RegEx: could do it (but if so, I don't know how)?

1:RegEx

Code: Select all

Match:  ([a-z]+)(\d+) ...
Replace: \1\2


\1 would cover your 'letters'
\2 would cover your numbers

Now how to (or if you can actually) "pad" the number part (using RegEx)... ?

[Mick02]

Hi therube,
Thanks for the reply. I was playing with a similar setup to what you show but cannot get the pad 4 to show what I want. I'll try your way & see what I get. Thanks again.

[Luuk]

This depends on your prefixs starting with 1-or-2 english letters, followed by 1-3 digits, followed by " - ", and then some text.
RegEx(1) can pad them to 4-digits, but needs a checkmark for "v2", with a "Match" and "Replace" something like...
^([a-z]{1,2})(\d{1,3} - .+)(?X)(\G|^[a-z]{1,2})\K0(?=\d{4,} - .+)/g
${1}0000000000$2(?X)

With the checkmark for "v2", RegEx(1) can use (?X) to conduct many different regexs during 1-rename.
So the 1st-Match/Replace just adds many extra zeros, but really all your Replace needs is just 3-zeros.
The 2nd-Match doesnt have any Replace, so it deletes any extra zeros, when there's 4-or-more digits.

[Mick02]

Hi Luuk,
Thanks for that I'll give it a try.

[Mick02]

Hi Luuk,
I just tried your solution on a couple situations & it works well.
Thanks again.