Ring middleware for defining and applying rewrite rules. In many cases you can get away with ring-rewrite instead of writing Apache mod_rewrite rules. Inspired by rack-rewrite.
ring-middleware consists of two handlers, wrap-rewrite for handling incoming request and rewrite-page for updating the reponse body.
Define rewrite and redirect rules and apply them to the incoming request.
(-> app
(wrap-rewrite
[:rewrite "/foo" "/bar"]
[:rewrite #"/foo/(.+)/(.+)" "/bar/$1/$2"]
[:301 #"/search\?q=(.+)" "http://www.google.com/search?q=$1"]
;Options can be applied to only match specific methods, schemes or hosts
[:302 "/example" "/moved/example" :host "example.com" :scheme :https :method :get]
;Use predicates to decide whether to apply rule
[:rewrite "/example2" "/moved/example2" :if (fn [req] (= "enabled" (System/getProperty "rewrites")))]
[:rewrite #"/features.*" "/feature_request" :not "/features"] ;match /features.xml not /features
[:rewrite #"/secret/name/(.+)" "/secret/place/$1"
:if (fn [{:keys [headers]}] (= "42" (get headers "x-secret")))
:not "/secret/name/bully"]
;Use a funtion to decide where to redirect/rewrite to
[:rewrite "/custom/rule" (fn [from req] ...)]
[:303 #"/custom/rule?q=(.+)" (fn [[_ grp] {:keys [uri] :as req}] ...)]
;Add headers
[:307 "/example3" "/moved/example3" :headers {"Cache-Control" "no-cache"}])
See tests for more examples.
Adds support for rewriting the outgoing markup on the fly.
(-> app
(rewrite-page
[:rewrite #"css/(\w+)" "http://cdn.com/$1"]))
;before <link href="css/bootstrap.min.css" rel="stylesheet" media="screen">
;after <link href="http://cdn.com/bootstrap.min.css" rel="stylesheet" media="screen">###Leiningen
[ring-rewrite "0.1.0"]
###Maven
<dependency>
<groupId>ring-rewrite</groupId>
<artifactId>ring-rewrite</artifactId>
<version>0.1.0</version>
</dependency>:send-file and :x-send-file support
Copyright © 2013 Erik Bakstad
Distributed under the Eclipse Public License, the same as Clojure.