1 files changed, 137 insertions, 0 deletions
diff --git a/opener-ex.js b/opener-ex.js
new file mode 100755
index 0000000..60feaf1
--- /dev/null
+++ b/opener-ex.js
@@ -0,0 +1,137 @@
+/**
+ * Vimperator-Plugin
+ * @see http://vimperator.g.hatena.ne.jp/voidy21/20100119/1263907211
+ * @see http://vimperator.g.hatena.ne.jp/nokturnalmortum/20100120/1263927707
+ * @see http://vimperator.g.hatena.ne.jp/teramako/20100221/1266774716
+ * @require _libly.js
+ */
+
+let U = liberator.plugins.libly.$U;
+
+/**
+ * create a function for replacing
+ * tabbrowser.addTab or browser.loadURIWithFlags method
+ * to the function.
+ * @param {Boolean} isAddTab either for tabbrowser.addTab or not
+ * @return {Function}
+ */
+function createAround(isAddTab){
+  /**
+   * replaced function
+   * @param {Function} wrappedOriginalFunction
+   * @param {arguments} args the arguments for original function
+   */
+  return function openerAround(wrappedOriginalFunction, args){
+    let url = args[0], uri;
+    try {
+      uri = getRedirectedURL(util.createURI(url));
+      args[0] = uri.spec;
+    } catch(e){
+      liberator.echoerr(e);
+    }
+    if (!(uri && jump(uri))){
+      if (isAddTab){
+        let tab = wrappedOriginalFunction();
+        if (!("_around" in tab))
+          tab.linkedBrowser._around = U.around(tab.linkedBrowser,
+                                               "loadURIWithFlags",
+                                               createAround(false));
+        return tab;
+      }
+      return wrappedOriginalFunction();
+    }
+    return tabs.getTab();
+  };
+}
+
+/**
+ * @param {String} msg
+ */
+function echomsg(msg){
+  liberator.echomsg(NAME + ": " + msg, 2);
+}
+
+/**
+ * if already the aURI is opened in the tabs,
+ *  selected the tab and return true
+ * or else
+ *  return false
+ * @param {nsIURI} aURI
+ * @param {Boolean}
+ */
+function jump(aURI){
+  if (aURI.schemeIs("about"))
+    return false;
+  for (let [i, browser] in tabs.browsers){
+    if (browser.currentURI.equals(aURI)){
+      echomsg("jumping to " + i + ": " + aURI.spec);
+      tabs.select(i);
+      return true;
+    }
+  }
+  return false;
+}
+
+/**
+ * if aURI is "URL Shortener" host,
+ * returns true or else returns false
+ * @param {nsIURI} aURI
+ * @return {Boolean}
+ */
+function isShortenURLHost(aURI){
+  switch(aURI.host){
+    case "bit.ly":
+    case "j.mp":
+    case "goo.gl":
+    case "ff.im":
+    case "ow.ly":
+    case "tinyurl.com":
+    case "tumblr.com":
+      return true;
+    default:
+      return false;
+  }
+}
+/**
+ * @param {nsIURI} aURI
+ * @return {nsIURI} either a redirected URI or an URI of the arugments
+ */
+function getRedirectedURL(aURI){
+  if ((aURI.schemeIs("http") || aURI.schemeIs("https")) && isShortenURLHost(aURI)){
+    let x = new XMLHttpRequest;
+    x.open("HEAD", aURI.spec, false);
+    x.send(null);
+    echomsg(aURI.spec + " -> " + x.channel.URI.spec);
+    return x.channel.URI;
+  }
+  return aURI;
+}
+
+function init(){
+  onUnload();
+  let tabbrowser = getBrowser();
+  tabbrowser._around = U.around(tabbrowser, "addTab", createAround(true));
+  for (let [,browser] in tabs.browsers){
+    browser._around = U.around(browser, "loadURIWithFlags", createAround(false));
+  }
+}
+init();
+
+/**
+ * called before the script is reloaded
+ */
+function onUnload(){
+  let tabbrowser = getBrowser();
+  if ("_around" in tabbrowser){
+    tabbrowser._around.restore();
+    delete tabbrowser_around
+  }
+  for (let [,browser] in tabs.browsers){
+    if ("_around" in browser){
+      browser._around.restore();
+      delete browser_around
+    }
+  }
+}
+
+// vim: sw=2 ts=2 et:
+\ No newline at end of file