Globus

Bash-like globbing patterns for Clojure(Script).

Supported pattern language constructs:

• ?: matches any single character
• *: matches any string, including the empty string
• [qwe]: matches any single character in #{\q \w \e}
• [^qwe] or [!qwe]: matches any single character not in #{\q \w \e}
• [a-f]: matches any single character between \a and \f (inclusive)
• {one,two,three}: matches anything that any of the patterns one, two and three would match. This one is has slightly different semantics than what e.g. bash does (because in bash curly braces are not actually a part of the matching engine)

See the tests for more details and examples.

Usage

(require '[globus.core :as glob])

;; check if a string is a glob pattern (contains special symbols)
(glob/glob? "abc") ; => false
(glob/glob? "ab?c") ; => true

;; filter a sequence of strings
(glob/glob "a*" ["aaa" "bb" "cccc" "defg"]) ; => ("aaa")
(glob/glob "[^a]???" ["aaa" "bb" "cccc" "defg"]) ; => ("cccc" "defg")

;; convert a pattern to a (string representation of a) regular expression
(glob/pattern->regex "{a.*,*b}") ; => "(?:(?:a\\..*)|(?:.*b))"

;; enumerate all possible expansions of a pattern
(glob/explode "[ab]{cd,efg,hi[j-m]}")
; =>
; ["acd"
;  "aefg"
;  "ahij"
;  "ahik"
;  "ahil"
;  "ahim"
;  "bcd"
;  "befg"
;  "bhij"
;  "bhik"
;  "bhil"
;  "bhim"]

;; that fails for patterns that cannot be expanded (contain `*`, `?` or
;; `[^...])
(glob/explode "abc*") ; Exception is thrown

Contributing

Run the project's tests:

$ clojure -T:build test
$ clojure -T:build test-node # ClojureScript tests

License

Copyright © 2022 Suprematic

Distributed under the Eclipse Public License.