Fast TOML parser for Clojure

toml-clj is fast TOML parser for JVM Clojure that supports latest TOML spec (1.0.0).

Using

Add this to deps.edn:

io.github.tonsky/toml-clj {:mvn/version "0.1.0"}

Require:

(require '[toml-clj.core :as toml])

Parse strings:

(toml/read-string "x = 1")
; => {"x" 1}

Convert keys to keywords:

(toml/read-string "[section]\nx = 1" {:key-fn keyword})
; => {:section {:x 1}}

Parse streams:

(with-open [rdr (clojure.java.io/reader "test/test.toml")]
  (toml/read rdr))
; => {"table" {"key" ...

Performance

Quick testing on 25 Kb TOML file on Macbook Pro M1:

Library	Execution time mean
toml-clj (this library)	0.274 ms
lantiga/clj-toml v0.3.1	603.536 ms
vmfhrmfoaj/clj-toml	594.234 ms
tomlj (Java)	5.6 ms
clojure.edn (EDN)	0.9 ms
cheshire (JSON)	0.057 ms

Credits

Parser code is adopted from https://github.com/TheElectronWill/Night-Config and changed to make it work with Clojure.

Tests are adopted from https://github.com/lantiga/clj-toml.

License

Copyright © 2023 Nikita Prokopov

Licensed under LGPL version 3.