match a route in Compojure / Clout - regex

Question

I am trying to match routes of the following form : {{mongoID}}.{{width}}x{{height}}.{{extension}}
For instance, /5591499e2dbc18bd0f000050.240x240.jpegis a valid route.
I'd like to be able to destructure it like so :
{:id 5591499e2dbc18bd0f000050
:width 240
:height 240
:extension jpeg }
Compojure supports regex, and dots too apparently https://github.com/weavejester/compojure/issues/42 .
I can have individual regexes for each of the fields, but I'm not sure how to put that into the route path (I'm trying to use the array syntax) :
https://github.com/weavejester/compojure/wiki/Routes-In-Detail#matching-the-uri
Let's say I have this :
(GET ["/my-route/:mongoID.:widthx:height.:extension" :mongoID ...
:width ...
:height ...
:extension ...])
Obviously the string "/my-route/:mongoID.:widthx:height.:extension" won't work (just because the "x" is lost, maybe something else too).
How can I modify my route to make it match my arguments ?
Note : I'm also using Prismatic/Schema if that's useful.

Answer 1

Compojure uses clout for route matching. That's how it allows you to specify the regex for each parameter. The following works in clout:
user=> (require '[clout.core :as clout])
user=> (require '[ring.mock.request :refer [request]])
user=> (clout/route-matches (clout/route-compile "/my-route/:mongoID.:width{\\d+}x:height{\\d+}.:extension") (request :get "/my-route/5591499e2dbc18bd0f000050.240x240.jpeg"))
{:extension "jpeg", :height "240", :width "240", :mongoID "5591499e2dbc18bd0f000050"}
So the following should work in compojure:
(GET "/my-route/:mongoID.:width{\\d+}x:height{\\d+}.:extension"
[mongoID width height extension]
(do-something-with mongoID width heigth extension)