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Tag: clojure-1.6.0-…
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; Copyright (c) Rich Hickey. All rights reserved.
; The use and distribution terms for this software are covered by the
; Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
; which can be found in the file epl-v10.html at the root of this distribution.
; By using this software in any fashion, you are agreeing to be bound by
; the terms of this license.
; You must not remove this notice, or any other, from this software.
(ns
^{:author "Christophe Grand",
:doc "Start a web browser from Clojure"}
clojure.java.browse
(:require [clojure.java.shell :as sh]
[clojure.string :as str])
(:import (java.net URI)))
(defn- macosx? []
(-> "os.name" System/getProperty .toLowerCase
(.startsWith "mac os x")))
(defn- xdg-open-loc []
;; try/catch needed to mask exception on Windows without Cygwin
(let [which-out (try (:out (sh/sh "which" "xdg-open"))
(catch Exception e ""))]
(if (= which-out "")
nil
(str/trim-newline which-out))))
(defn- open-url-script-val []
(if (macosx?)
"/usr/bin/open"
(xdg-open-loc)))
;; We could assign (open-url-script-val) to *open-url-script* right
;; away in the def below, but clojure.java.shell/sh creates a future
;; that causes a long wait for the JVM to exit during Clojure compiles
;; (unless we can somehow here make it call (shutdown-agents) later).
;; Better to initialize it when we first need it, in browse-url.
(def ^:dynamic *open-url-script* (atom :uninitialized))
(defn- open-url-in-browser
"Opens url (a string) in the default system web browser. May not
work on all platforms. Returns url on success, nil if not
supported."
[url]
(try
(when (clojure.lang.Reflector/invokeStaticMethod "java.awt.Desktop"
"isDesktopSupported" (to-array nil))
(-> (clojure.lang.Reflector/invokeStaticMethod "java.awt.Desktop"
"getDesktop" (to-array nil))
(.browse (URI. url)))
url)
(catch ClassNotFoundException e
nil)))
(defn- open-url-in-swing
"Opens url (a string) in a Swing window."
[url]
; the implementation of this function resides in another namespace to be loaded "on demand"
; this fixes a bug on mac os x where the process turns into a GUI app
; see http://code.google.com/p/clojure-contrib/issues/detail?id=32
(require 'clojure.java.browse-ui)
((find-var 'clojure.java.browse-ui/open-url-in-swing) url))
(defn browse-url
"Open url in a browser"
{:added "1.2"}
[url]
(let [script @*open-url-script*
script (if (= :uninitialized script)
(reset! *open-url-script* (open-url-script-val))
script)]
(or (when script (sh/sh script (str url)) true)
(open-url-in-browser url)
(open-url-in-swing url))))
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