url

This is a library that makes working with URLs in Clojure and ClojureScript a little more pleasant.

"Installation"

url is available in Clojars. Add this :dependency to your Leiningen project.clj:

[com.cemerick/url "0.1.1"]

Or, add this to your Maven project's pom.xml:

<repository>
  <id>clojars</id>
  <url>http://clojars.org/repo</url>
</repository>

<dependency>
  <groupId>com.cemerick</groupId>
  <artifactId>url</artifactId>
  <version>0.1.1</version>
</dependency>

Starting with version 0.1.0, url requires Clojure >= 1.5.0. It provides the same API under ClojureScript (tested with ClojureScript 0.0-1835, and should work well with any later revision).

Usage

The cemerick.url/url function returns an instance of the cemerick.url.URL record type that allows you to easily work with each datum within the provided URL:

=> (require '[cemerick.url :refer (url url-encode)])
nil
=> (-> (url "https://api.stripe.com/v1/charges")
     (assoc :username "vtUQeOtUnYr7PGCLQ96Ul4zqpDUO4sOE")
     str)
"https://vtUQeOtUnYr7PGCLQ96Ul4zqpDUO4sOE:@api.stripe.com/v1/charges"

url will also accept additional paths to be resolved against the path in the base URL:

=> (url "https://api.twitter.com/")
#cemerick.url.URL{:protocol "https", :username nil, :password nil,
                  :host "api.twitter.com", :port -1, :path "/", :query nil,
                  :anchor nil}
=> (url "https://api.twitter.com/" "1" "users" "profile_image" "cemerick")
#cemerick.url.URL{:protocol "https", :username nil, :password nil,
                  :host "api.twitter.com", :port -1,
                  :path "/1/users/profile_image/cemerick", :query nil, :anchor nil}
=> (str *1)
"https://api.twitter.com/1/users/profile_image/cemerick"
=> (str (url "https://api.twitter.com/1/users/profile_image/cemerick" "../../lookup.json"))
"https://api.twitter.com/1/users/lookup.json"

The :query slot can be a string or a map of params:

=> (str (assoc *3 :query {:a 5 :b 6}))
"https://api.twitter.com/1/users/profile_image/cemerick?a=5&b=6"

Note that url does not perform any url-encoding of paths. Use cemerick.url/url-encode to url-encode any paths/path components prior to passing them to url. e.g.:

=> (def download-root "http://foo.com/dl")
#'cemerick.test-url/download-root
=> (str (url download-root "/"))
"http://foo.com/"
=> (str (url download-root (url-encode "/")))
"http://foo.com/dl/%2F"
=> (str (url download-root (url-encode "/logical/file/path")))
"http://foo.com/dl/%2Flogical%2Ffile%2Fpath"

Need Help?

Ping cemerick on freenode irc or twitter if you have questions or would like to contribute patches.

License

Copyright ©2012 Chas Emerick and other contributors

Distributed under the Eclipse Public License, the same as Clojure. Please see the epl-v10.html file at the top level of this repo.