Question

Given a regex and a directory path, how do I get a seq of files whose path matches the regex?

i.e., I want

(require '[clojure.java.io :as io])

(regex-file-seq #"\.ssh/.*\.pub$" (io/file "/home")) =>
(#<File /home/x/.ssh/iaf_dsa.pub> #<File ....>)

This took me a few minutes to put the pieces together, so I thought I’d post it.

Answer 1

(defn regex-file-seq
  "Lazily filter a directory based on a regex."
  [re dir]
  (filter #(re-find re (.getPath %)) (file-seq dir)))