1 files changed, 37 insertions, 0 deletions
diff --git a/toolkit/jetpack/sdk/uri/resource.js b/toolkit/jetpack/sdk/uri/resource.js
new file mode 100644
index 000000000..8a1dcbf2c
--- /dev/null
+++ b/toolkit/jetpack/sdk/uri/resource.js
@@ -0,0 +1,37 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+module.metadata = {
+  "stability": "unstable"
+};
+
+const {Cc, Ci} = require("chrome");
+const ioService = Cc["@mozilla.org/network/io-service;1"].
+                  getService(Ci.nsIIOService);
+const resourceHandler = ioService.getProtocolHandler("resource").
+                        QueryInterface(Ci.nsIResProtocolHandler);
+
+const URI = (uri, base=null) =>
+  ioService.newURI(uri, null, base && URI(base))
+
+const mount = (domain, uri) =>
+  resourceHandler.setSubstitution(domain, ioService.newURI(uri, null, null));
+exports.mount = mount;
+
+const unmount = (domain, uri) =>
+  resourceHandler.setSubstitution(domain, null);
+exports.unmount = unmount;
+
+const domain = 1;
+const path = 2;
+const resolve = (uri) => {
+  const match = /resource\:\/\/([^\/]+)\/{0,1}([\s\S]*)/.exec(uri);
+  const domain = match && match[1];
+  const path = match && match[2];
+  return !match ? null :
+         !resourceHandler.hasSubstitution(domain) ? null :
+  resourceHandler.resolveURI(URI(`/${path}`, `resource://${domain}/`));
+}
+exports.resolve = resolve;