Issue 153 - Reimplement io.js based on OS.File API

lib/filterStorage.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 69 matching lines @@
     }
 
     if (!file)
       Cu.reportError("Adblock Plus: Failed to resolve filter file location from extensions.adblockplus.patternsfile preference");
 
     this.__defineGetter__("sourceFile", function() file);
     return this.sourceFile;
   },
 
   /**
+   * Will be set to true if no patterns.ini file exists.
+   * @type Boolean
+   */
+  firstRun: false,
+
+  /**
    * Map of properties listed in the filter storage file before the sections
    * start. Right now this should be only the format version.
    */
   fileProperties: {__proto__: null},
 
   /**
    * List of filter subscriptions containing all filters
    * @type Array of Subscription
    */
   subscriptions: [],
@@ skipping 359 matching lines @@
     }
     else
     {
       explicitFile = false;
       sourceFile = FilterStorage.sourceFile;
 
       let callback = function(e, statData)
       {
         if (e || !statData.exists)
         {
-          let {addonRoot} = require("info");
-          sourceFile = Services.io.newURI(addonRoot + "defaults/patterns.ini", null, null);
+          this.firstRun = true;
+          this._loading = false;
+          FilterNotifier.triggerListeners("load");
+
+          TimeLine.leave("FilterStorage.loadFromDisk() read callback done");
         }
         startRead(sourceFile);
       }
 
       if (sourceFile)
         IO.statFile(sourceFile, callback);
       else
         callback(true);
     }
 
@@ skipping 399 matching lines @@
       Subscription.knownSubscriptions = origKnownSubscriptions;
     }
 
     // Allow events to be processed every now and then.
     // Note: IO.readFromFile() will deal with the potential reentrance here.
     this.linesProcessed++;
     if (this.linesProcessed % 1000 == 0)
       Utils.yield();
   }
 };