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README.md

lambdaisland/uri

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A pure Clojure/ClojureScript URI library.

Key features

  • 100% cross-platform .cljc
  • RFC compliant joining of URIs
  • relative URIs as first class citizens

Support Lambda Island Open Source

lambdaisland/uri is part of a growing collection of quality Clojure libraries and tools released on the Lambda Island label. If you find value in our work please consider becoming a backer on Open Collective

Rationale

There are a number of Clojure libraries for working with URI/URLs (see Similar projects below). They all rely to some degree on java.net.URI or java.net.URL. This lib provides a pure-Clojure/ClojureScript alternative.

See the announcement blog post

Installation

To install, add the following dependency to your project or build file:

deps.edn:

lambdaisland/uri {:mvn/version "1.4.54"}

project.clj

[lambdaisland/uri "1.4.54"]

Usage

(require '[lambdaisland.uri :refer [uri join]])


;; uri :: String -> lambdaisland.uri.URI
(uri "//example.com/foo/bar")
;;=> #lambdaisland/uri "//example.com/foo/bar"


;; A URI is a record, use assoc to update specific parts
;; Use `str` if you want the URI back as a string
(str
 (assoc (uri "//example.com/foo/bar")
        :scheme "https"
        :user "arne"
        :password "supersecret"
        :host "lambdaisland.com"
        :port "3333"
        :path "/hello/world"
        :query "q=5"
        :fragment "section1"))
;;=> "https://arne:supersecret@lambdaisland.com:3333/hello/world?q=5#section1"


;; RFC compliant joining of relative URIs
(join "//example.com/foo/bar" "./~arne/site/" "../foo.png")
;;=> #lambdaisland/uri "//example.com/foo/~arne/foo.png"


;; Arguments to `join` are coerced, you can pass strings, java.net.URI, or any x
;; for which `(str x)` returns a URI string.
(join (java.net.URI. "http://example.com/foo/bar")  (uri "./~arne/site/") "../foo.png")
;;=> #lambdaisland/uri "http://example.com/foo/~arne/foo.png"


;; URI implements IFn for keyword based lookup, so it's fully
;; interface-compatible with Clojure maps.
(:path (uri "http://example.com/foo/bar"))

;; Instances of URI are printed with a #lambdaisland/uri reader tag. To read
;; them back from EDN, use the provided readers.
(require '[clojure.edn :as edn])

(edn/read-string
 {:readers lambdaisland.uri/edn-readers}
 "#lambdaisland/uri \"http://example.com/foo/~arne/foo.png\"")

Full API docs are on Cljdoc

Similar projects

  • exploding-fish I was not aware at the time of creating lambdaisland/uri of exploding fish. It is the most mature pure-Clojure URI lib out there. It does not provide ClojureScript support.
  • cemerick/url Cross platform (cljx), Clojure version uses java.net.URI.
  • michaelklishin/urly Based on java.net.URI.
  • codonnell/uri Based on java.net.URI.

Further reading

RFC3986 Uniform Resource Identifier (URI): Generic Syntax

This library implements the algorithm specified in Section 5.2 of that RFC.

It has been tested against this list of test cases compiled by the W3C.

Contributing

Everyone has a right to submit patches to this projects, and thus become a contributor.

Contributors MUST

  • adhere to the LambdaIsland Clojure Style Guide
  • write patches that solve a problem. Start by stating the problem, then supply a minimal solution. *
  • agree to license their contributions as MPLv2.
  • not break the contract with downstream consumers.
  • not break the tests.

Contributors SHOULD

  • update the CHANGELOG and README.
  • add tests for new functionality.

If you submit a pull request that adheres to these rules, then it will almost certainly be merged immediately. However some things may require more consideration. If you add new dependencies, or significantly increase the API surface, then we need to decide if these changes are in line with the project's goals. In this case you can start by writing a pitch, and collecting feedback on it.

* This goes for features too, a feature needs to solve a problem. State the problem it solves, then supply a minimal solution.

License

  Copyright © 2017-2020 Arne Brasseur and contributors   Licensed under the term of the Mozilla Public License 2.0, see LICENSE.

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A pure Clojure/ClojureScript URI library

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