How to get the name of the folders from the file name in Ruby?

Question

Apologies, as I am not into Ruby coding, and I am writing a code to get the folder names of the structures from the file path.

For example, if I have a file in E:/aaa/bbb/ccc/filename.jpg

How can I get the folder names aaa, bbb, and ccc? I know only the parent folder ccc to use File.nakeddir, but for aaa and bbb, how to get them?

Thank you!

May be you can check this link [Get parent directory of current directory in Ruby](https://stackoverflow.com/questions/8660732/get-parent-directory-of-current-directory-in-ruby) — Preman Terminal, Sep 02 '21 at 09:56
Did you try searching for it? https://stackoverflow.com/questions/2206714/can-a-ruby-script-tell-what-directory-it-s-in — Denny Mueller, Sep 02 '21 at 10:17
There is no rush to select an answer but if at least one answer is useful please select the one you prefer. I realize that at this time there is only one answer. — Cary Swoveland, Sep 03 '21 at 04:01

score 1 · Accepted Answer · answered Sep 02 '21 at 13:01

1

The Pathname class from the Ruby standard library can be used to break down paths into their constituent parts:

require 'pathname'
path = Pathname.new("E:/aaa/bbb/ccc/filename.jpg")
path.dirname.each_filename.drop(1) # ["aaa", "bbb", "ccc"]

answered Sep 02 '21 at 13:01

max

96,212
14
104
165

`drop(1)` removes the `aaa` as well. `drop(1)` is not necessary here. – Rajagopalan Sep 05 '21 at 04:04
@Rajagopalan incorrect - it removes `E:`. – max Sep 05 '21 at 10:17
Nope! That's wrong. Which Ruby Version are you using? `path.dirname.each_filename.to_a` returns `["aaa", "bbb", "ccc"]` – Rajagopalan Sep 05 '21 at 12:06
This was just tested on ruby 2.7.0p0 – max Sep 05 '21 at 12:22
I think they have changed from `2.7.1`. Because I have tested in `2.7.1` and `3.0`. – Rajagopalan Sep 05 '21 at 12:30
@Rajagopalan - makes sense. Should probally get around to updating the VM I use for stackoverflow examples some day. – max Sep 05 '21 at 12:32
Hey wait! Nope. I checked in ruby2.6.5 as well, it works the same way as it does in ruby 3.0. Don't know what's happening in your end. If I executes with drop(1) then my output is `["bbb", "ccc"]` – Rajagopalan Sep 05 '21 at 12:34
Could it be a windows thing since it as after all a windows path? I'm running it on a linux VM. – max Sep 05 '21 at 12:35
Ah! Yes. that might be the case I think! – Rajagopalan Sep 05 '21 at 12:36

How to get the name of the folders from the file name in Ruby?

1 Answers1