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

lib/filterStorage.js

Index: lib/filterStorage.js
===================================================================
--- a/lib/filterStorage.js
+++ b/lib/filterStorage.js
@@ -82,16 +82,22 @@ let FilterStorage = exports.FilterStorag
     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
@@ -461,18 +467,21 @@ let FilterStorage = exports.FilterStorag
     {
       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);