Adding ABP core modules to ABP/Opera

lib/adblockplus.js

+/*
+ * This Source Code is subject to the terms of the Mozilla Public License
+ * version 2.0 (the "License"). You can obtain a copy of the License at
+ * http://mozilla.org/MPL/2.0/.
+ */
+
+//
+// This file has been generated automatically from Adblock Plus for Firefox
+// source code. DO NOT MODIFY, change the original source code instead.
+//
+// Relevant repositories:
+// * https://hg.adblockplus.org/adblockplus/
+// * https://hg.adblockplus.org/jshydra/
+//
+
+require.scopes["filterNotifier"] = (function()
+{
+  var exports = {};
+  var listeners = [];
+  var FilterNotifier = exports.FilterNotifier =
+  {
+    addListener: function(listener)
+    {
+      if (listeners.indexOf(listener) >= 0)
+      {
+        return;
+      }
+      listeners.push(listener);
+    },
+    removeListener: function(listener)
+    {
+      var index = listeners.indexOf(listener);
+      if (index >= 0)
+      {
+        listeners.splice(index, 1);
+      }
+    },
+    triggerListeners: function(action, item, param1, param2, param3)
+    {
+      for (var _loopIndex0 = 0; _loopIndex0 < listeners.length; ++_loopIndex0)
+      {
+        var listener = listeners[_loopIndex0];
+        listener(action, item, param1, param2, param3);
+      }
+    }
+  };
+  return exports;
+})();
+require.scopes["filterClasses"] = (function()
+{
+  var exports = {};
+  var FilterNotifier = require("filterNotifier").FilterNotifier;
+
+  function Filter(text)
+  {
+    this.text = text;
+    this.subscriptions = [];
+  }
+  exports.Filter = Filter;
+  Filter.prototype =
+  {
+    text: null,
+    subscriptions: null,
+    serialize: function(buffer)
+    {
+      buffer.push("[Filter]");
+      buffer.push("text=" + this.text);
+    },
+    toString: function()
+    {
+      return this.text;
+    }
+  };
+  Filter.knownFilters =
+  {
+    __proto__: null
+  };
+  Filter.elemhideRegExp = /^([^\/\*\|\@"!]*?)#(\@)?(?:([\w\-]+|\*)((?:\([\w\-]+(?:[$^*]?=[^\(\)"]*)?\))*)|#([^{}]+))$/;
+  Filter.regexpRegExp = /^(@@)?\/.*\/(?:\$~?[\w\-]+(?:=[^,\s]+)?(?:,~?[\w\-]+(?:=[^,\s]+)?)*)?$/;
+  Filter.optionsRegExp = /\$(~?[\w\-]+(?:=[^,\s]+)?(?:,~?[\w\-]+(?:=[^,\s]+)?)*)$/;
+  Filter.fromText = function(text)
+  {
+    if (text in Filter.knownFilters)
+    {
+      return Filter.knownFilters[text];
+    }
+    var ret;
+    var match = text.indexOf("#") >= 0 ? Filter.elemhideRegExp.exec(text) : null;
+    if (match)
+    {
+      ret = ElemHideBase.fromText(text, match[1], match[2], match[3], match[4], match[5]);
+    }
+    else if (text[0] == "!")
+    {
+      ret = new CommentFilter(text);
+    }
+    else
+    {
+      ret = RegExpFilter.fromText(text);
+    }
+    Filter.knownFilters[ret.text] = ret;
+    return ret;
+  };
+  Filter.fromObject = function(obj)
+  {
+    var ret = Filter.fromText(obj.text);
+    if (ret instanceof ActiveFilter)
+    {
+      if ("disabled" in obj)
+      {
+        ret._disabled = obj.disabled == "true";
+      }
+      if ("hitCount" in obj)
+      {
+        ret._hitCount = parseInt(obj.hitCount) || 0;
+      }
+      if ("lastHit" in obj)
+      {
+        ret._lastHit = parseInt(obj.lastHit) || 0;
+      }
+    }
+    return ret;
+  };
+  Filter.normalize = function(text)
+  {
+    if (!text)
+    {
+      return text;
+    }
+    text = text.replace(/[^\S ]/g, "");
+    if (/^\s*!/.test(text))
+    {
+      return text.replace(/^\s+/, "").replace(/\s+$/, "");
+    }
+    else if (Filter.elemhideRegExp.test(text))
+    {
+      var _tempVar1 = /^(.*?)(#\@?#?)(.*)$/.exec(text);
+      var domain = _tempVar1[1];
+      var separator = _tempVar1[2];
+      var selector = _tempVar1[3];
+      return domain.replace(/\s/g, "") + separator + selector.replace(/^\s+/, "").replace(/\s+$/, "");
+    }
+    else
+    {
+      return text.replace(/\s/g, "");
+    }
+  };
+
+  function InvalidFilter(text, reason)
+  {
+    Filter.call(this, text);
+    this.reason = reason;
+  }
+  exports.InvalidFilter = InvalidFilter;
+  InvalidFilter.prototype =
+  {
+    __proto__: Filter.prototype,
+    reason: null,
+    serialize: function(buffer){}
+  };
+
+  function CommentFilter(text)
+  {
+    Filter.call(this, text);
+  }
+  exports.CommentFilter = CommentFilter;
+  CommentFilter.prototype =
+  {
+    __proto__: Filter.prototype,
+    serialize: function(buffer){}
+  };
+
+  function ActiveFilter(text, domains)
+  {
+    Filter.call(this, text);
+    this.domainSource = domains;
+  }
+  exports.ActiveFilter = ActiveFilter;
+  ActiveFilter.prototype =
+  {
+    __proto__: Filter.prototype,
+    _disabled: false,
+    _hitCount: 0,
+    _lastHit: 0,
+    get disabled()
+    {
+      return this._disabled;
+    },
+    set disabled(value)
+    {
+      if (value != this._disabled)
+      {
+        var oldValue = this._disabled;
+        this._disabled = value;
+        FilterNotifier.triggerListeners("filter.disabled", this, value, oldValue);
+      }
+      return this._disabled;
+    },
+    get hitCount()
+    {
+      return this._hitCount;
+    },
+    set hitCount(value)
+    {
+      if (value != this._hitCount)
+      {
+        var oldValue = this._hitCount;
+        this._hitCount = value;
+        FilterNotifier.triggerListeners("filter.hitCount", this, value, oldValue);
+      }
+      return this._hitCount;
+    },
+    get lastHit()
+    {
+      return this._lastHit;
+    },
+    set lastHit(value)
+    {
+      if (value != this._lastHit)
+      {
+        var oldValue = this._lastHit;
+        this._lastHit = value;
+        FilterNotifier.triggerListeners("filter.lastHit", this, value, oldValue);
+      }
+      return this._lastHit;
+    },
+    domainSource: null,
+    domainSeparator: null,
+    ignoreTrailingDot: true,
+    get domains()
+    {
+      var domains = null;
+      if (this.domainSource)
+      {
+        var list = this.domainSource.split(this.domainSeparator);
+        if (list.length == 1 && list[0][0] != "~")
+        {
+          domains =
+          {
+            __proto__: null,
+            "": false
+          };
+          if (this.ignoreTrailingDot)
+          {
+            list[0] = list[0].replace(/\.+$/, "");
+          }
+          domains[list[0]] = true;
+        }
+        else
+        {
+          var hasIncludes = false;
+          for (var i = 0; i < list.length; i++)
+          {
+            var domain = list[i];
+            if (this.ignoreTrailingDot)
+            {
+              domain = domain.replace(/\.+$/, "");
+            }
+            if (domain == "")
+            {
+              continue;
+            }
+            var include;
+            if (domain[0] == "~")
+            {
+              include = false;
+              domain = domain.substr(1);
+            }
+            else
+            {
+              include = true;
+              hasIncludes = true;
+            }
+            if (!domains)
+            {
+              domains =
+              {
+                __proto__: null
+              };
+            }
+            domains[domain] = include;
+          }
+          domains[""] = !hasIncludes;
+        }
+        delete this.domainSource;
+      }
+      this.__defineGetter__("domains", function()
+      {
+        return domains;
+      });
+      return this.domains;
+    },
+    isActiveOnDomain: function(docDomain)
+    {
+      if (!this.domains)
+      {
+        return true;
+      }
+      if (!docDomain)
+      {
+        return this.domains[""];
+      }
+      if (this.ignoreTrailingDot)
+      {
+        docDomain = docDomain.replace(/\.+$/, "");
+      }
+      docDomain = docDomain.toUpperCase();
+      while (true)
+      {
+        if (docDomain in this.domains)
+        {
+          return this.domains[docDomain];
+        }
+        var nextDot = docDomain.indexOf(".");
+        if (nextDot < 0)
+        {
+          break;
+        }
+        docDomain = docDomain.substr(nextDot + 1);
+      }
+      return this.domains[""];
+    },
+    isActiveOnlyOnDomain: function(docDomain)
+    {
+      if (!docDomain || !this.domains || this.domains[""])
+      {
+        return false;
+      }
+      if (this.ignoreTrailingDot)
+      {
+        docDomain = docDomain.replace(/\.+$/, "");
+      }
+      docDomain = docDomain.toUpperCase();
+      for (var domain in this.domains)
+      {
+        if (this.domains[domain] && domain != docDomain && (domain.length <= docDomain.length || domain.indexOf("." + docDomain) != domain.length - docDomain.length - 1))
+        {
+          return false;
+        }
+      }
+      return true;
+    },
+    serialize: function(buffer)
+    {
+      if (this._disabled || this._hitCount || this._lastHit)
+      {
+        Filter.prototype.serialize.call(this, buffer);
+        if (this._disabled)
+        {
+          buffer.push("disabled=true");
+        }
+        if (this._hitCount)
+        {
+          buffer.push("hitCount=" + this._hitCount);
+        }
+        if (this._lastHit)
+        {
+          buffer.push("lastHit=" + this._lastHit);
+        }
+      }
+    }
+  };
+
+  function RegExpFilter(text, regexpSource, contentType, matchCase, domains, thirdParty)
+  {
+    ActiveFilter.call(this, text, domains);
+    if (contentType != null)
+    {
+      this.contentType = contentType;
+    }
+    if (matchCase)
+    {
+      this.matchCase = matchCase;
+    }
+    if (thirdParty != null)
+    {
+      this.thirdParty = thirdParty;
+    }
+    if (regexpSource.length >= 2 && regexpSource[0] == "/" && regexpSource[regexpSource.length - 1] == "/")
+    {
+      var regexp = new RegExp(regexpSource.substr(1, regexpSource.length - 2), this.matchCase ? "" : "i");
+      this.__defineGetter__("regexp", function()
+      {
+        return regexp;
+      });
+    }
+    else
+    {
+      this.regexpSource = regexpSource;
+    }
+  }
+  exports.RegExpFilter = RegExpFilter;
+  RegExpFilter.prototype =
+  {
+    __proto__: ActiveFilter.prototype,
+    length: 1,
+    domainSeparator: "|",
+    regexpSource: null,
+    get regexp()
+    {
+      var source = this.regexpSource.replace(/\*+/g, "*");
+      if (source[0] == "*")
+      {
+        source = source.substr(1);
+      }
+      var pos = source.length - 1;
+      if (pos >= 0 && source[pos] == "*")
+      {
+        source = source.substr(0, pos);
+      }
+      source = source.replace(/\^\|$/, "^").replace(/\W/g, "\\$&").replace(/\\\*/g, ".*").replace(/\\\^/g, "(?:[\\x00-\\x24\\x26-\\x2C\\x2F\\x3A-\\x40\\x5B-\\x5E\\x60\\x7B-\\x80]|$)").replace(/^\\\|\\\|/, "^[\\w\\-]+:\\/+(?!\\/)(?:[^.\\/]+\\.)*?").replace(/^\\\|/, "^").replace(/\\\|$/, "$");
+      var regexp = new RegExp(source, this.matchCase ? "" : "i");
+      delete this.regexpSource;
+      this.__defineGetter__("regexp", function()
+      {
+        return regexp;
+      });
+      return this.regexp;
+    },
+    contentType: 2147483647,
+    matchCase: false,
+    thirdParty: null,
+    matches: function(location, contentType, docDomain, thirdParty)
+    {
+      if (this.regexp.test(location) && (RegExpFilter.typeMap[contentType] & this.contentType) != 0 && (this.thirdParty == null || this.thirdParty == thirdParty) && this.isActiveOnDomain(docDomain))
+      {
+        return true;
+      }
+      return false;
+    }
+  };
+  RegExpFilter.prototype.__defineGetter__("0", function()
+  {
+    return this;
+  });
+  RegExpFilter.fromText = function(text)
+  {
+    var blocking = true;
+    var origText = text;
+    if (text.indexOf("@@") == 0)
+    {
+      blocking = false;
+      text = text.substr(2);
+    }
+    var contentType = null;
+    var matchCase = null;
+    var domains = null;
+    var siteKeys = null;
+    var thirdParty = null;
+    var collapse = null;
+    var options;
+    var match = text.indexOf("$") >= 0 ? Filter.optionsRegExp.exec(text) : null;
+    if (match)
+    {
+      options = match[1].toUpperCase().split(",");
+      text = match.input.substr(0, match.index);
+      for (var _loopIndex2 = 0; _loopIndex2 < options.length; ++_loopIndex2)
+      {
+        var option = options[_loopIndex2];
+        var value = null;
+        var separatorIndex = option.indexOf("=");
+        if (separatorIndex >= 0)
+        {
+          value = option.substr(separatorIndex + 1);
+          option = option.substr(0, separatorIndex);
+        }
+        option = option.replace(/-/, "_");
+        if (option in RegExpFilter.typeMap)
+        {
+          if (contentType == null)
+          {
+            contentType = 0;
+          }
+          contentType |= RegExpFilter.typeMap[option];
+        }
+        else if (option[0] == "~" && option.substr(1) in RegExpFilter.typeMap)
+        {
+          if (contentType == null)
+          {
+            contentType = RegExpFilter.prototype.contentType;
+          }
+          contentType &= ~RegExpFilter.typeMap[option.substr(1)];
+        }
+        else if (option == "MATCH_CASE")
+        {
+          matchCase = true;
+        }
+        else if (option == "DOMAIN" && typeof value != "undefined")
+        {
+          domains = value;
+        }
+        else if (option == "THIRD_PARTY")
+        {
+          thirdParty = true;
+        }
+        else if (option == "~THIRD_PARTY")
+        {
+          thirdParty = false;
+        }
+        else if (option == "COLLAPSE")
+        {
+          collapse = true;
+        }
+        else if (option == "~COLLAPSE")
+        {
+          collapse = false;
+        }
+        else if (option == "SITEKEY" && typeof value != "undefined")
+        {
+          siteKeys = value.split(/\|/);
+        }
+      }
+    }
+    if (!blocking && (contentType == null || contentType & RegExpFilter.typeMap.DOCUMENT) && (!options || options.indexOf("DOCUMENT") < 0) && !/^\|?[\w\-]+:/.test(text))
+    {
+      if (contentType == null)
+      {
+        contentType = RegExpFilter.prototype.contentType;
+      }
+      contentType &= ~RegExpFilter.typeMap.DOCUMENT;
+    }
+    if (!blocking && siteKeys)
+    {
+      contentType = RegExpFilter.typeMap.DOCUMENT;
+    }
+    try
+    {
+      if (blocking)
+      {
+        return new BlockingFilter(origText, text, contentType, matchCase, domains, thirdParty, collapse);
+      }
+      else
+      {
+        return new WhitelistFilter(origText, text, contentType, matchCase, domains, thirdParty, siteKeys);
+      }
+    }
+    catch (e)
+    {
+      return new InvalidFilter(text, e);
+    }
+  };
+  RegExpFilter.typeMap =
+  {
+    OTHER: 1,
+    SCRIPT: 2,
+    IMAGE: 4,
+    STYLESHEET: 8,
+    OBJECT: 16,
+    SUBDOCUMENT: 32,
+    DOCUMENT: 64,
+    XBL: 1,
+    PING: 1,
+    XMLHTTPREQUEST: 2048,
+    OBJECT_SUBREQUEST: 4096,
+    DTD: 1,
+    MEDIA: 16384,
+    FONT: 32768,
+    BACKGROUND: 4,
+    POPUP: 268435456,
+    DONOTTRACK: 536870912,
+    ELEMHIDE: 1073741824
+  };
+  RegExpFilter.prototype.contentType &= ~ (RegExpFilter.typeMap.ELEMHIDE | RegExpFilter.typeMap.DONOTTRACK | RegExpFilter.typeMap.POPUP);
+
+  function BlockingFilter(text, regexpSource, contentType, matchCase, domains, thirdParty, collapse)
+  {
+    RegExpFilter.call(this, text, regexpSource, contentType, matchCase, domains, thirdParty);
+    this.collapse = collapse;
+  }
+  exports.BlockingFilter = BlockingFilter;
+  BlockingFilter.prototype =
+  {
+    __proto__: RegExpFilter.prototype,
+    collapse: null
+  };
+
+  function WhitelistFilter(text, regexpSource, contentType, matchCase, domains, thirdParty, siteKeys)
+  {
+    RegExpFilter.call(this, text, regexpSource, contentType, matchCase, domains, thirdParty);
+    if (siteKeys != null)
+    {
+      this.siteKeys = siteKeys;
+    }
+  }
+  exports.WhitelistFilter = WhitelistFilter;
+  WhitelistFilter.prototype =
+  {
+    __proto__: RegExpFilter.prototype,
+    siteKeys: null
+  };
+
+  function ElemHideBase(text, domains, selector)
+  {
+    ActiveFilter.call(this, text, domains ? domains.toUpperCase() : null);
+    if (domains)
+    {
+      this.selectorDomain = domains.replace(/,~[^,]+/g, "").replace(/^~[^,]+,?/, "").toLowerCase();
+    }
+    this.selector = selector;
+  }
+  exports.ElemHideBase = ElemHideBase;
+  ElemHideBase.prototype =
+  {
+    __proto__: ActiveFilter.prototype,
+    domainSeparator: ",",
+    ignoreTrailingDot: false,
+    selectorDomain: null,
+    selector: null
+  };
+  ElemHideBase.fromText = function(text, domain, isException, tagName, attrRules, selector)
+  {
+    if (!selector)
+    {
+      if (tagName == "*")
+      {
+        tagName = "";
+      }
+      var id = null;
+      var additional = "";
+      if (attrRules)
+      {
+        attrRules = attrRules.match(/\([\w\-]+(?:[$^*]?=[^\(\)"]*)?\)/g);
+        for (var _loopIndex3 = 0; _loopIndex3 < attrRules.length; ++_loopIndex3)
+        {
+          var rule = attrRules[_loopIndex3];
+          rule = rule.substr(1, rule.length - 2);
+          var separatorPos = rule.indexOf("=");
+          if (separatorPos > 0)
+          {
+            rule = rule.replace(/=/, "=\"") + "\"";
+            additional += "[" + rule + "]";
+          }
+          else
+          {
+            if (id)
+            {
+              var Utils = require("utils").Utils;
+              return new InvalidFilter(text, Utils.getString("filter_elemhide_duplicate_id"));
+            }
+            else
+            {
+              id = rule;
+            }
+          }
+        }
+      }
+      if (id)
+      {
+        selector = tagName + "." + id + additional + "," + tagName + "#" + id + additional;
+      }
+      else if (tagName || additional)
+      {
+        selector = tagName + additional;
+      }
+      else
+      {
+        var Utils = require("utils").Utils;
+        return new InvalidFilter(text, Utils.getString("filter_elemhide_nocriteria"));
+      }
+    }
+    if (isException)
+    {
+      return new ElemHideException(text, domain, selector);
+    }
+    else
+    {
+      return new ElemHideFilter(text, domain, selector);
+    }
+  };
+
+  function ElemHideFilter(text, domains, selector)
+  {
+    ElemHideBase.call(this, text, domains, selector);
+  }
+  exports.ElemHideFilter = ElemHideFilter;
+  ElemHideFilter.prototype =
+  {
+    __proto__: ElemHideBase.prototype
+  };
+
+  function ElemHideException(text, domains, selector)
+  {
+    ElemHideBase.call(this, text, domains, selector);
+  }
+  exports.ElemHideException = ElemHideException;
+  ElemHideException.prototype =
+  {
+    __proto__: ElemHideBase.prototype
+  };
+  return exports;
+})();
+require.scopes["subscriptionClasses"] = (function()
+{
+  var exports = {};
+  var _tempVar4 = require("filterClasses");
+  var ActiveFilter = _tempVar4.ActiveFilter;
+  var BlockingFilter = _tempVar4.BlockingFilter;
+  var WhitelistFilter = _tempVar4.WhitelistFilter;
+  var ElemHideBase = _tempVar4.ElemHideBase;
+  var FilterNotifier = require("filterNotifier").FilterNotifier;
+
+  function Subscription(url, title)
+  {
+    this.url = url;
+    this.filters = [];
+    if (title)
+    {
+      this._title = title;
+    }
+    else
+    {
+      var Utils = require("utils").Utils;
+      this._title = Utils.getString("newGroup_title");
+    }
+    Subscription.knownSubscriptions[url] = this;
+  }
+  exports.Subscription = Subscription;
+  Subscription.prototype =
+  {
+    url: null,
+    filters: null,
+    _title: null,
+    _fixedTitle: false,
+    _disabled: false,
+    get title()
+    {
+      return this._title;
+    },
+    set title(value)
+    {
+      if (value != this._title)
+      {
+        var oldValue = this._title;
+        this._title = value;
+        FilterNotifier.triggerListeners("subscription.title", this, value, oldValue);
+      }
+      return this._title;
+    },
+    get fixedTitle()
+    {
+      return this._fixedTitle;
+    },
+    set fixedTitle(value)
+    {
+      if (value != this._fixedTitle)
+      {
+        var oldValue = this._fixedTitle;
+        this._fixedTitle = value;
+        FilterNotifier.triggerListeners("subscription.fixedTitle", this, value, oldValue);
+      }
+      return this._fixedTitle;
+    },
+    get disabled()
+    {
+      return this._disabled;
+    },
+    set disabled(value)
+    {
+      if (value != this._disabled)
+      {
+        var oldValue = this._disabled;
+        this._disabled = value;
+        FilterNotifier.triggerListeners("subscription.disabled", this, value, oldValue);
+      }
+      return this._disabled;
+    },
+    serialize: function(buffer)
+    {
+      buffer.push("[Subscription]");
+      buffer.push("url=" + this.url);
+      buffer.push("title=" + this._title);
+      if (this._fixedTitle)
+      {
+        buffer.push("fixedTitle=true");
+      }
+      if (this._disabled)
+      {
+        buffer.push("disabled=true");
+      }
+    },
+    serializeFilters: function(buffer)
+    {
+      for (var _loopIndex5 = 0; _loopIndex5 < this.filters.length; ++_loopIndex5)
+      {
+        var filter = this.filters[_loopIndex5];
+        buffer.push(filter.text.replace(/\[/g, "\\["));
+      }
+    },
+    toString: function()
+    {
+      var buffer = [];
+      this.serialize(buffer);
+      return buffer.join("\n");
+    }
+  };
+  Subscription.knownSubscriptions =
+  {
+    __proto__: null
+  };
+  Subscription.fromURL = function(url)
+  {
+    if (url in Subscription.knownSubscriptions)
+    {
+      return Subscription.knownSubscriptions[url];
+    }
+    try
+    {
+      url = Services.io.newURI(url, null, null).spec;
+      return new DownloadableSubscription(url, null);
+    }
+    catch (e)
+    {
+      return new SpecialSubscription(url);
+    }
+  };
+  Subscription.fromObject = function(obj)
+  {
+    var result;
+    try
+    {
+      obj.url = Services.io.newURI(obj.url, null, null).spec;
+      result = new DownloadableSubscription(obj.url, obj.title);
+      if ("nextURL" in obj)
+      {
+        result.nextURL = obj.nextURL;
+      }
+      if ("downloadStatus" in obj)
+      {
+        result._downloadStatus = obj.downloadStatus;
+      }
+      if ("lastModified" in obj)
+      {
+        result.lastModified = obj.lastModified;
+      }
+      if ("lastSuccess" in obj)
+      {
+        result.lastSuccess = parseInt(obj.lastSuccess) || 0;
+      }
+      if ("lastCheck" in obj)
+      {
+        result._lastCheck = parseInt(obj.lastCheck) || 0;
+      }
+      if ("expires" in obj)
+      {
+        result.expires = parseInt(obj.expires) || 0;
+      }
+      if ("softExpiration" in obj)
+      {
+        result.softExpiration = parseInt(obj.softExpiration) || 0;
+      }
+      if ("errors" in obj)
+      {
+        result._errors = parseInt(obj.errors) || 0;
+      }
+      if ("requiredVersion" in obj)
+      {
+        var addonVersion = require("info").addonVersion;
+        result.requiredVersion = obj.requiredVersion;
+        if (Services.vc.compare(result.requiredVersion, addonVersion) > 0)
+        {
+          result.upgradeRequired = true;
+        }
+      }
+      if ("alternativeLocations" in obj)
+      {
+        result.alternativeLocations = obj.alternativeLocations;
+      }
+      if ("homepage" in obj)
+      {
+        result._homepage = obj.homepage;
+      }
+      if ("lastDownload" in obj)
+      {
+        result._lastDownload = parseInt(obj.lastDownload) || 0;
+      }
+    }
+    catch (e)
+    {
+      if (!("title" in obj))
+      {
+        if (obj.url == "~wl~")
+        {
+          obj.defaults = "whitelist";
+        }
+        else if (obj.url == "~fl~")
+        {
+          obj.defaults = "blocking";
+        }
+        else if (obj.url == "~eh~")
+        {
+          obj.defaults = "elemhide";
+        }
+        if ("defaults" in obj)
+        {
+          var Utils = require("utils").Utils;
+          obj.title = Utils.getString(obj.defaults + "Group_title");
+        }
+      }
+      result = new SpecialSubscription(obj.url, obj.title);
+      if ("defaults" in obj)
+      {
+        result.defaults = obj.defaults.split(" ");
+      }
+    }
+    if ("fixedTitle" in obj)
+    {
+      result._fixedTitle = obj.fixedTitle == "true";
+    }
+    if ("disabled" in obj)
+    {
+      result._disabled = obj.disabled == "true";
+    }
+    return result;
+  };
+
+  function SpecialSubscription(url, title)
+  {
+    Subscription.call(this, url, title);
+  }
+  exports.SpecialSubscription = SpecialSubscription;
+  SpecialSubscription.prototype =
+  {
+    __proto__: Subscription.prototype,
+    defaults: null,
+    isDefaultFor: function(filter)
+    {
+      if (this.defaults && this.defaults.length)
+      {
+        for (var _loopIndex6 = 0; _loopIndex6 < this.defaults.length; ++_loopIndex6)
+        {
+          var type = this.defaults[_loopIndex6];
+          if (filter instanceof SpecialSubscription.defaultsMap[type])
+          {
+            return true;
+          }
+          if (!(filter instanceof ActiveFilter) && type == "blacklist")
+          {
+            return true;
+          }
+        }
+      }
+      return false;
+    },
+    serialize: function(buffer)
+    {
+      Subscription.prototype.serialize.call(this, buffer);
+      if (this.defaults && this.defaults.length)
+      {
+        buffer.push("defaults=" + this.defaults.filter(function(type)
+        {
+          return type in SpecialSubscription.defaultsMap;
+        }).join(" "));
+      }
+      if (this._lastDownload)
+      {
+        buffer.push("lastDownload=" + this._lastDownload);
+      }
+    }
+  };
+  SpecialSubscription.defaultsMap =
+  {
+    __proto__: null,
+    "whitelist": WhitelistFilter,
+    "blocking": BlockingFilter,
+    "elemhide": ElemHideBase
+  };
+  SpecialSubscription.create = function(title)
+  {
+    var url;
+    do
+    {
+      url = "~user~" + Math.round(Math.random() * 1000000);
+    }
+    while (url in Subscription.knownSubscriptions);
+    return new SpecialSubscription(url, title);
+  };
+  SpecialSubscription.createForFilter = function(filter)
+  {
+    var subscription = SpecialSubscription.create();
+    subscription.filters.push(filter);
+    for (var type in SpecialSubscription.defaultsMap)
+    {
+      if (filter instanceof SpecialSubscription.defaultsMap[type])
+      {
+        subscription.defaults = [type];
+      }
+    }
+    if (!subscription.defaults)
+    {
+      subscription.defaults = ["blocking"];
+    }
+    var Utils = require("utils").Utils;
+    subscription.title = Utils.getString(subscription.defaults[0] + "Group_title");
+    return subscription;
+  };
+
+  function RegularSubscription(url, title)
+  {
+    Subscription.call(this, url, title || url);
+  }
+  exports.RegularSubscription = RegularSubscription;
+  RegularSubscription.prototype =
+  {
+    __proto__: Subscription.prototype,
+    _homepage: null,
+    _lastDownload: 0,
+    get homepage()
+    {
+      return this._homepage;
+    },
+    set homepage(value)
+    {
+      if (value != this._homepage)
+      {
+        var oldValue = this._homepage;
+        this._homepage = value;
+        FilterNotifier.triggerListeners("subscription.homepage", this, value, oldValue);
+      }
+      return this._homepage;
+    },
+    get lastDownload()
+    {
+      return this._lastDownload;
+    },
+    set lastDownload(value)
+    {
+      if (value != this._lastDownload)
+      {
+        var oldValue = this._lastDownload;
+        this._lastDownload = value;
+        FilterNotifier.triggerListeners("subscription.lastDownload", this, value, oldValue);
+      }
+      return this._lastDownload;
+    },
+    serialize: function(buffer)
+    {
+      Subscription.prototype.serialize.call(this, buffer);
+      if (this._homepage)
+      {
+        buffer.push("homepage=" + this._homepage);
+      }
+      if (this._lastDownload)
+      {
+        buffer.push("lastDownload=" + this._lastDownload);
+      }
+    }
+  };
+
+  function ExternalSubscription(url, title)
+  {
+    RegularSubscription.call(this, url, title);
+  }
+  exports.ExternalSubscription = ExternalSubscription;
+  ExternalSubscription.prototype =
+  {
+    __proto__: RegularSubscription.prototype,
+    serialize: function(buffer)
+    {
+      throw new Error("Unexpected call, external subscriptions should not be serialized");
+    }
+  };
+
+  function DownloadableSubscription(url, title)
+  {
+    RegularSubscription.call(this, url, title);
+  }
+  exports.DownloadableSubscription = DownloadableSubscription;
+  DownloadableSubscription.prototype =
+  {
+    __proto__: RegularSubscription.prototype,
+    _downloadStatus: null,
+    _lastCheck: 0,
+    _errors: 0,
+    nextURL: null,
+    get downloadStatus()
+    {
+      return this._downloadStatus;
+    },
+    set downloadStatus(value)
+    {
+      var oldValue = this._downloadStatus;
+      this._downloadStatus = value;
+      FilterNotifier.triggerListeners("subscription.downloadStatus", this, value, oldValue);
+      return this._downloadStatus;
+    },
+    lastModified: null,
+    lastSuccess: 0,
+    get lastCheck()
+    {
+      return this._lastCheck;
+    },
+    set lastCheck(value)
+    {
+      if (value != this._lastCheck)
+      {
+        var oldValue = this._lastCheck;
+        this._lastCheck = value;
+        FilterNotifier.triggerListeners("subscription.lastCheck", this, value, oldValue);
+      }
+      return this._lastCheck;
+    },
+    expires: 0,
+    softExpiration: 0,
+    get errors()
+    {
+      return this._errors;
+    },
+    set errors(value)
+    {
+      if (value != this._errors)
+      {
+        var oldValue = this._errors;
+        this._errors = value;
+        FilterNotifier.triggerListeners("subscription.errors", this, value, oldValue);
+      }
+      return this._errors;
+    },
+    requiredVersion: null,
+    upgradeRequired: false,
+    alternativeLocations: null,
+    serialize: function(buffer)
+    {
+      RegularSubscription.prototype.serialize.call(this, buffer);
+      if (this.nextURL)
+      {
+        buffer.push("nextURL=" + this.nextURL);
+      }
+      if (this.downloadStatus)
+      {
+        buffer.push("downloadStatus=" + this.downloadStatus);
+      }
+      if (this.lastModified)
+      {
+        buffer.push("lastModified=" + this.lastModified);
+      }
+      if (this.lastSuccess)
+      {
+        buffer.push("lastSuccess=" + this.lastSuccess);
+      }
+      if (this.lastCheck)
+      {
+        buffer.push("lastCheck=" + this.lastCheck);
+      }
+      if (this.expires)
+      {
+        buffer.push("expires=" + this.expires);
+      }
+      if (this.softExpiration)
+      {
+        buffer.push("softExpiration=" + this.softExpiration);
+      }
+      if (this.errors)
+      {
+        buffer.push("errors=" + this.errors);
+      }
+      if (this.requiredVersion)
+      {
+        buffer.push("requiredVersion=" + this.requiredVersion);
+      }
+      if (this.alternativeLocations)
+      {
+        buffer.push("alternativeLocations=" + this.alternativeLocations);
+      }
+    }
+  };
+  return exports;
+})();
+require.scopes["filterStorage"] = (function()
+{
+  var exports = {};
+  var IO = require("io").IO;
+  var Prefs = require("prefs").Prefs;
+  var _tempVar7 = require("filterClasses");
+  var Filter = _tempVar7.Filter;
+  var ActiveFilter = _tempVar7.ActiveFilter;
+  var _tempVar8 = require("subscriptionClasses");
+  var Subscription = _tempVar8.Subscription;
+  var SpecialSubscription = _tempVar8.SpecialSubscription;
+  var ExternalSubscription = _tempVar8.ExternalSubscription;
+  var FilterNotifier = require("filterNotifier").FilterNotifier;
+  var formatVersion = 4;
+  var FilterStorage = exports.FilterStorage =
+  {
+    get formatVersion()
+    {
+      return formatVersion;
+    },
+    get sourceFile()
+    {
+      var file = null;
+      if (Prefs.patternsfile)
+      {
+        file = IO.resolveFilePath(Prefs.patternsfile);
+      }
+      if (!file)
+      {
+        file = IO.resolveFilePath(Prefs.data_directory);
+        if (file)
+        {
+          file.append("patterns.ini");
+        }
+      }
+      if (!file)
+      {
+        try
+        {
+          file = IO.resolveFilePath(Services.prefs.getDefaultBranch("extensions.adblockplus.").getCharPref("data_directory"));
+          if (file)
+          {
+            file.append("patterns.ini");
+          }
+        }
+        catch (e){}
+      }
+      if (!file)
+      {
+        Cu.reportError("Adblock Plus: Failed to resolve filter file location from extensions.adblockplus.patternsfile preference");
+      }
+      this.__defineGetter__("sourceFile", function()
+      {
+        return file;
+      });
+      return this.sourceFile;
+    },
+    fileProperties:
+    {
+      __proto__: null
+    },
+    subscriptions: [],
+    knownSubscriptions:
+    {
+      __proto__: null
+    },
+    getGroupForFilter: function(filter)
+    {
+      var generalSubscription = null;
+      for (var _loopIndex9 = 0; _loopIndex9 < FilterStorage.subscriptions.length; ++_loopIndex9)
+      {
+        var subscription = FilterStorage.subscriptions[_loopIndex9];
+        if (subscription instanceof SpecialSubscription && !subscription.disabled)
+        {
+          if (subscription.isDefaultFor(filter))
+          {
+            return subscription;
+          }
+          if (!generalSubscription && (!subscription.defaults || !subscription.defaults.length))
+          {
+            generalSubscription = subscription;
+          }
+        }
+      }
+      return generalSubscription;
+    },
+    addSubscription: function(subscription, silent)
+    {
+      if (subscription.url in FilterStorage.knownSubscriptions)
+      {
+        return;
+      }
+      FilterStorage.subscriptions.push(subscription);
+      FilterStorage.knownSubscriptions[subscription.url] = subscription;
+      addSubscriptionFilters(subscription);
+      if (!silent)
+      {
+        FilterNotifier.triggerListeners("subscription.added", subscription);
+      }
+    },
+    removeSubscription: function(subscription, silent)
+    {
+      for (var i = 0; i < FilterStorage.subscriptions.length; i++)
+      {
+        if (FilterStorage.subscriptions[i].url == subscription.url)
+        {
+          removeSubscriptionFilters(subscription);
+          FilterStorage.subscriptions.splice(i--, 1);
+          delete FilterStorage.knownSubscriptions[subscription.url];
+          if (!silent)
+          {
+            FilterNotifier.triggerListeners("subscription.removed", subscription);
+          }
+          return;
+        }
+      }
+    },
+    moveSubscription: function(subscription, insertBefore)
+    {
+      var currentPos = FilterStorage.subscriptions.indexOf(subscription);
+      if (currentPos < 0)
+      {
+        return;
+      }
+      var newPos = insertBefore ? FilterStorage.subscriptions.indexOf(insertBefore) : -1;
+      if (newPos < 0)
+      {
+        newPos = FilterStorage.subscriptions.length;
+      }
+      if (currentPos < newPos)
+      {
+        newPos--;
+      }
+      if (currentPos == newPos)
+      {
+        return;
+      }
+      FilterStorage.subscriptions.splice(currentPos, 1);
+      FilterStorage.subscriptions.splice(newPos, 0, subscription);
+      FilterNotifier.triggerListeners("subscription.moved", subscription);
+    },
+    updateSubscriptionFilters: function(subscription, filters)
+    {
+      removeSubscriptionFilters(subscription);
+      subscription.oldFilters = subscription.filters;
+      subscription.filters = filters;
+      addSubscriptionFilters(subscription);
+      FilterNotifier.triggerListeners("subscription.updated", subscription);
+      delete subscription.oldFilters;
+    },
+    addFilter: function(filter, subscription, position, silent)
+    {
+      if (!subscription)
+      {
+        if (filter.subscriptions.some(function(s)
+        {
+          return s instanceof SpecialSubscription && !s.disabled;
+        }))
+        {
+          return;
+        }
+        subscription = FilterStorage.getGroupForFilter(filter);
+      }
+      if (!subscription)
+      {
+        subscription = SpecialSubscription.createForFilter(filter);
+        this.addSubscription(subscription);
+        return;
+      }
+      if (typeof position == "undefined")
+      {
+        position = subscription.filters.length;
+      }
+      if (filter.subscriptions.indexOf(subscription) < 0)
+      {
+        filter.subscriptions.push(subscription);
+      }
+      subscription.filters.splice(position, 0, filter);
+      if (!silent)
+      {
+        FilterNotifier.triggerListeners("filter.added", filter, subscription, position);
+      }
+    },
+    removeFilter: function(filter, subscription, position)
+    {
+      var subscriptions = subscription ? [subscription] : filter.subscriptions.slice();
+      for (var i = 0; i < subscriptions.length; i++)
+      {
+        var subscription = subscriptions[i];
+        if (subscription instanceof SpecialSubscription)
+        {
+          var positions = [];
+          if (typeof position == "undefined")
+          {
+            var index = -1;
+            do
+            {
+              index = subscription.filters.indexOf(filter, index + 1);
+              if (index >= 0)
+              {
+                positions.push(index);
+              }
+            }
+            while (index >= 0);
+          }
+          else
+          {
+            positions.push(position);
+          }
+          for (var j = positions.length - 1; j >= 0; j--)
+          {
+            var position = positions[j];
+            if (subscription.filters[position] == filter)
+            {
+              subscription.filters.splice(position, 1);
+              if (subscription.filters.indexOf(filter) < 0)
+              {
+                var index = filter.subscriptions.indexOf(subscription);
+                if (index >= 0)
+                {
+                  filter.subscriptions.splice(index, 1);
+                }
+              }
+              FilterNotifier.triggerListeners("filter.removed", filter, subscription, position);
+            }
+          }
+        }
+      }
+    },
+    moveFilter: function(filter, subscription, oldPosition, newPosition)
+    {
+      if (!(subscription instanceof SpecialSubscription) || subscription.filters[oldPosition] != filter)
+      {
+        return;
+      }
+      newPosition = Math.min(Math.max(newPosition, 0), subscription.filters.length - 1);
+      if (oldPosition == newPosition)
+      {
+        return;
+      }
+      subscription.filters.splice(oldPosition, 1);
+      subscription.filters.splice(newPosition, 0, filter);
+      FilterNotifier.triggerListeners("filter.moved", filter, subscription, oldPosition, newPosition);
+    },
+    increaseHitCount: function(filter)
+    {
+      if (!Prefs.savestats || PrivateBrowsing.enabled || !(filter instanceof ActiveFilter))
+      {
+        return;
+      }
+      filter.hitCount++;
+      filter.lastHit = Date.now();
+    },
+    resetHitCounts: function(filters)
+    {
+      if (!filters)
+      {
+        filters = [];
+        for (var text in Filter.knownFilters)
+        {
+          filters.push(Filter.knownFilters[text]);
+        }
+      }
+      for (var _loopIndex10 = 0; _loopIndex10 < filters.length; ++_loopIndex10)
+      {
+        var filter = filters[_loopIndex10];
+        filter.hitCount = 0;
+        filter.lastHit = 0;
+      }
+    },
+    _loading: false,
+    loadFromDisk: function(sourceFile)
+    {
+      if (this._loading)
+      {
+        return;
+      }
+      var readFile = function(sourceFile, backupIndex)
+      {
+        var parser = new INIParser();
+        IO.readFromFile(sourceFile, true, parser, function(e)
+        {
+          if (!e && parser.subscriptions.length == 0)
+          {
+            e = new Error("No data in the file");
+          }
+          if (e)
+          {
+            Cu.reportError(e);
+          }
+          if (e && !explicitFile)
+          {
+            sourceFile = this.sourceFile;
+            if (sourceFile)
+            {
+              var _tempVar11 = /^(.*)(\.\w+)$/.exec(sourceFile.leafName) || [null, sourceFile.leafName, ""];
+              var part1 = _tempVar11[1];
+              var part2 = _tempVar11[2];
+              sourceFile = sourceFile.clone();
+              sourceFile.leafName = part1 + "-backup" + ++backupIndex + part2;
+              IO.statFile(sourceFile, function(e, statData)
+              {
+                if (!e && statData.exists)
+                {
+                  readFile(sourceFile, backupIndex);
+                }
+              });
+              return;
+            }
+          }
+          var specialMap =
+          {
+            "~il~": true,
+            "~wl~": true,
+            "~fl~": true,
+            "~eh~": true
+          };
+          var knownSubscriptions =
+          {
+            __proto__: null
+          };
+          for (var i = 0; i < parser.subscriptions.length; i++)
+          {
+            var subscription = parser.subscriptions[i];
+            if (subscription instanceof SpecialSubscription && subscription.filters.length == 0 && subscription.url in specialMap)
+            {
+              parser.subscriptions.splice(i--, 1);
+            }
+            else
+            {
+              knownSubscriptions[subscription.url] = subscription;
+            }
+          }
+          this.fileProperties = parser.fileProperties;
+          this.subscriptions = parser.subscriptions;
+          this.knownSubscriptions = knownSubscriptions;
+          Filter.knownFilters = parser.knownFilters;
+          Subscription.knownSubscriptions = parser.knownSubscriptions;
+          if (parser.userFilters)
+          {
+            for (var i = 0; i < parser.userFilters.length; i++)
+            {
+              var filter = Filter.fromText(parser.userFilters[i]);
+              this.addFilter(filter, null, undefined, true);
+            }
+          }
+          this._loading = false;
+          FilterNotifier.triggerListeners("load");
+          if (sourceFile != this.sourceFile)
+          {
+            this.saveToDisk();
+          }
+        }.bind(this), "FilterStorageRead");
+      }.bind(this);
+      var startRead = function(file)
+      {
+        this._loading = true;
+        readFile(file, 0);
+      }.bind(this);
+      var explicitFile;
+      if (sourceFile)
+      {
+        explicitFile = true;
+        startRead(sourceFile);
+      }
+      else
+      {
+        explicitFile = false;
+        sourceFile = FilterStorage.sourceFile;
+        var callback = function(e, statData)
+        {
+          if (e || !statData.exists)
+          {
+            var addonRoot = require("info").addonRoot;
+            sourceFile = Services.io.newURI(addonRoot + "defaults/patterns.ini", null, null);
+          }
+          startRead(sourceFile);
+        };
+        if (sourceFile)
+        {
+          IO.statFile(sourceFile, callback);
+        }
+        else
+        {
+          callback(true);
+        }
+      }
+    },
+    _generateFilterData: function(subscriptions)
+    {
+      var _generatorResult12 = [];
+      _generatorResult12.push("# Adblock Plus preferences");
+      _generatorResult12.push("version=" + formatVersion);
+      var saved =
+      {
+        __proto__: null
+      };
+      var buf = [];
+      for (var i = 0; i < subscriptions.length; i++)
+      {
+        var subscription = subscriptions[i];
+        for (var j = 0; j < subscription.filters.length; j++)
+        {
+          var filter = subscription.filters[j];
+          if (!(filter.text in saved))
+          {
+            filter.serialize(buf);
+            saved[filter.text] = filter;
+            for (var k = 0; k < buf.length; k++)
+            {
+              _generatorResult12.push(buf[k]);
+            }
+            buf.splice(0);
+          }
+        }
+      }
+      for (var i = 0; i < subscriptions.length; i++)
+      {
+        var subscription = subscriptions[i];
+        _generatorResult12.push("");
+        subscription.serialize(buf);
+        if (subscription.filters.length)
+        {
+          buf.push("", "[Subscription filters]");
+          subscription.serializeFilters(buf);
+        }
+        for (var k = 0; k < buf.length; k++)
+        {
+          _generatorResult12.push(buf[k]);
+        }
+        buf.splice(0);
+      }
+      return _generatorResult12;
+    },
+    _saving: false,
+    _needsSave: false,
+    saveToDisk: function(targetFile)
+    {
+      var explicitFile = true;
+      if (!targetFile)
+      {
+        targetFile = FilterStorage.sourceFile;
+        explicitFile = false;
+      }
+      if (!targetFile)
+      {
+        return;
+      }
+      if (!explicitFile && this._saving)
+      {
+        this._needsSave = true;
+        return;
+      }
+      try
+      {
+        targetFile.parent.create(Ci.nsIFile.DIRECTORY_TYPE, FileUtils.PERMS_DIRECTORY);
+      }
+      catch (e){}
+      var writeFilters = function()
+      {
+        IO.writeToFile(targetFile, true, this._generateFilterData(subscriptions), function(e)
+        {
+          if (!explicitFile)
+          {
+            this._saving = false;
+          }
+          if (e)
+          {
+            Cu.reportError(e);
+          }
+          if (!explicitFile && this._needsSave)
+          {
+            this._needsSave = false;
+            this.saveToDisk();
+          }
+          else
+          {
+            FilterNotifier.triggerListeners("save");
+          }
+        }.bind(this), "FilterStorageWrite");
+      }.bind(this);
+      var checkBackupRequired = function(callbackNotRequired, callbackRequired)
+      {
+        if (explicitFile || Prefs.patternsbackups <= 0)
+        {
+          callbackNotRequired();
+        }
+        else
+        {
+          IO.statFile(targetFile, function(e, statData)
+          {
+            if (e || !statData.exists)
+            {
+              callbackNotRequired();
+            }
+            else
+            {
+              var _tempVar13 = /^(.*)(\.\w+)$/.exec(targetFile.leafName) || [null, targetFile.leafName, ""];
+              var part1 = _tempVar13[1];
+              var part2 = _tempVar13[2];
+              var newestBackup = targetFile.clone();
+              newestBackup.leafName = part1 + "-backup1" + part2;
+              IO.statFile(newestBackup, function(e, statData)
+              {
+                if (!e && (!statData.exists || (Date.now() - statData.lastModified) / 3600000 >= Prefs.patternsbackupinterval))
+                {
+                  callbackRequired(part1, part2);
+                }
+                else
+                {
+                  callbackNotRequired();
+                }
+              });
+            }
+          });
+        }
+      }.bind(this);
+      var removeLastBackup = function(part1, part2)
+      {
+        var file = targetFile.clone();
+        file.leafName = part1 + "-backup" + Prefs.patternsbackups + part2;
+        IO.removeFile(file, function(e)
+        {
+          return renameBackup(part1, part2, Prefs.patternsbackups - 1);
+        });
+      }.bind(this);
+      var renameBackup = function(part1, part2, index)
+      {
+        if (index > 0)
+        {
+          var fromFile = targetFile.clone();
+          fromFile.leafName = part1 + "-backup" + index + part2;
+          var toName = part1 + "-backup" + (index + 1) + part2;
+          IO.renameFile(fromFile, toName, function(e)
+          {
+            return renameBackup(part1, part2, index - 1);
+          });
+        }
+        else
+        {
+          var toFile = targetFile.clone();
+          toFile.leafName = part1 + "-backup" + (index + 1) + part2;
+          IO.copyFile(targetFile, toFile, writeFilters);
+        }
+      }.bind(this);
+      var subscriptions = this.subscriptions.filter(function(s)
+      {
+        return !(s instanceof ExternalSubscription);
+      });
+      if (!explicitFile)
+      {
+        this._saving = true;
+      }
+      checkBackupRequired(writeFilters, removeLastBackup);
+    },
+    getBackupFiles: function()
+    {
+      var result = [];
+      var _tempVar14 = /^(.*)(\.\w+)$/.exec(FilterStorage.sourceFile.leafName) || [null, FilterStorage.sourceFile.leafName, ""];
+      var part1 = _tempVar14[1];
+      var part2 = _tempVar14[2];
+      for (var i = 1;; i++)
+      {
+        var file = FilterStorage.sourceFile.clone();
+        file.leafName = part1 + "-backup" + i + part2;
+        if (file.exists())
+        {
+          result.push(file);
+        }
+        else
+        {
+          break;
+        }
+      }
+      return result;
+    }
+  };
+
+  function addSubscriptionFilters(subscription)
+  {
+    if (!(subscription.url in FilterStorage.knownSubscriptions))
+    {
+      return;
+    }
+    for (var _loopIndex15 = 0; _loopIndex15 < subscription.filters.length; ++_loopIndex15)
+    {
+      var filter = subscription.filters[_loopIndex15];
+      filter.subscriptions.push(subscription);
+    }
+  }
+
+  function removeSubscriptionFilters(subscription)
+  {
+    if (!(subscription.url in FilterStorage.knownSubscriptions))
+    {
+      return;
+    }
+    for (var _loopIndex16 = 0; _loopIndex16 < subscription.filters.length; ++_loopIndex16)
+    {
+      var filter = subscription.filters[_loopIndex16];
+      var i = filter.subscriptions.indexOf(subscription);
+      if (i >= 0)
+      {
+        filter.subscriptions.splice(i, 1);
+      }
+    }
+  }
+  var PrivateBrowsing = exports.PrivateBrowsing =
+  {
+    enabled: false,
+    init: function()
+    {
+      if ("@mozilla.org/privatebrowsing;1" in Cc)
+      {
+        try
+        {
+          this.enabled = Cc["@mozilla.org/privatebrowsing;1"].getService(Ci.nsIPrivateBrowsingService).privateBrowsingEnabled;
+          Services.obs.addObserver(this, "private-browsing", true);
+          onShutdown.add(function()
+          {
+            Services.obs.removeObserver(this, "private-browsing");
+          }.bind(this));
+        }
+        catch (e)
+        {
+          Cu.reportError(e);
+        }
+      }
+    },
+    observe: function(subject, topic, data)
+    {
+      if (topic == "private-browsing")
+      {
+        if (data == "enter")
+        {
+          this.enabled = true;
+        }
+        else if (data == "exit")
+        {
+          this.enabled = false;
+        }
+      }
+    },
+    QueryInterface: XPCOMUtils.generateQI([Ci.nsISupportsWeakReference, Ci.nsIObserver])
+  };
+  PrivateBrowsing.init();
+
+  function INIParser()
+  {
+    this.fileProperties = this.curObj = {};
+    this.subscriptions = [];
+    this.knownFilters =
+    {
+      __proto__: null
+    };
+    this.knownSubscriptions =
+    {
+      __proto__: null
+    };
+  }
+  INIParser.prototype =
+  {
+    subscriptions: null,
+    knownFilters: null,
+    knownSubscrptions: null,
+    wantObj: true,
+    fileProperties: null,
+    curObj: null,
+    curSection: null,
+    userFilters: null,
+    process: function(val)
+    {
+      var origKnownFilters = Filter.knownFilters;
+      Filter.knownFilters = this.knownFilters;
+      var origKnownSubscriptions = Subscription.knownSubscriptions;
+      Subscription.knownSubscriptions = this.knownSubscriptions;
+      var match;
+      try
+      {
+        if (this.wantObj === true && (match = /^(\w+)=(.*)$/.exec(val)))
+        {
+          this.curObj[match[1]] = match[2];
+        }
+        else if (val === null || (match = /^\s*\[(.+)\]\s*$/.exec(val)))
+        {
+          if (this.curObj)
+          {
+            switch (this.curSection)
+            {
+            case "filter":
+            case "pattern":
+              if ("text" in this.curObj)
+              {
+                Filter.fromObject(this.curObj);
+              }
+              break;
+            case "subscription":
+              var subscription = Subscription.fromObject(this.curObj);
+              if (subscription)
+              {
+                this.subscriptions.push(subscription);
+              }
+              break;
+            case "subscription filters":
+            case "subscription patterns":
+              if (this.subscriptions.length)
+              {
+                var subscription = this.subscriptions[this.subscriptions.length - 1];
+                for (var _loopIndex17 = 0; _loopIndex17 < this.curObj.length; ++_loopIndex17)
+                {
+                  var text = this.curObj[_loopIndex17];
+                  var filter = Filter.fromText(text);
+                  subscription.filters.push(filter);
+                  filter.subscriptions.push(subscription);
+                }
+              }
+              break;
+            case "user patterns":
+              this.userFilters = this.curObj;
+              break;
+            }
+          }
+          if (val === null)
+          {
+            return;
+          }
+          this.curSection = match[1].toLowerCase();
+          switch (this.curSection)
+          {
+          case "filter":
+          case "pattern":
+          case "subscription":
+            this.wantObj = true;
+            this.curObj = {};
+            break;
+          case "subscription filters":
+          case "subscription patterns":
+          case "user patterns":
+            this.wantObj = false;
+            this.curObj = [];
+            break;
+          default:
+            this.wantObj = undefined;
+            this.curObj = null;
+          }
+        }
+        else if (this.wantObj === false && val)
+        {
+          this.curObj.push(val.replace(/\\\[/g, "["));
+        }
+      }
+      finally
+      {
+        Filter.knownFilters = origKnownFilters;
+        Subscription.knownSubscriptions = origKnownSubscriptions;
+      }
+    }
+  };
+  return exports;
+})();
+require.scopes["elemHide"] = (function()
+{
+  var exports = {};
+  var Utils = require("utils").Utils;
+  var IO = require("io").IO;
+  var Prefs = require("prefs").Prefs;
+  var ElemHideException = require("filterClasses").ElemHideException;
+  var FilterNotifier = require("filterNotifier").FilterNotifier;
+  var AboutHandler = require("elemHideHitRegistration").AboutHandler;
+  var filterByKey =
+  {
+    __proto__: null
+  };
+  var keyByFilter =
+  {
+    __proto__: null
+  };
+  var knownExceptions =
+  {
+    __proto__: null
+  };
+  var exceptions =
+  {
+    __proto__: null
+  };
+  var styleURL = null;
+  var ElemHide = exports.ElemHide =
+  {
+    isDirty: false,
+    applied: false,
+    init: function()
+    {
+      Prefs.addListener(function(name)
+      {
+        if (name == "enabled")
+        {
+          ElemHide.apply();
+        }
+      });
+      onShutdown.add(function()
+      {
+        ElemHide.unapply();
+      });
+      var styleFile = IO.resolveFilePath(Prefs.data_directory);
+      styleFile.append("elemhide.css");
+      styleURL = Services.io.newFileURI(styleFile).QueryInterface(Ci.nsIFileURL);
+    },
+    clear: function()
+    {
+      filterByKey =
+      {
+        __proto__: null
+      };
+      keyByFilter =
+      {
+        __proto__: null
+      };
+      knownExceptions =
+      {
+        __proto__: null
+      };
+      exceptions =
+      {
+        __proto__: null
+      };
+      ElemHide.isDirty = false;
+      ElemHide.unapply();
+    },
+    add: function(filter)
+    {
+      if (filter instanceof ElemHideException)
+      {
+        if (filter.text in knownExceptions)
+        {
+          return;
+        }
+        var selector = filter.selector;
+        if (!(selector in exceptions))
+        {
+          exceptions[selector] = [];
+        }
+        exceptions[selector].push(filter);
+        knownExceptions[filter.text] = true;
+      }
+      else
+      {
+        if (filter.text in keyByFilter)
+        {
+          return;
+        }
+        var key;
+        do
+        {
+          key = Math.random().toFixed(15).substr(5);
+        }
+        while (key in filterByKey);
+        filterByKey[key] = filter;
+        keyByFilter[filter.text] = key;
+        ElemHide.isDirty = true;
+      }
+    },
+    remove: function(filter)
+    {
+      if (filter instanceof ElemHideException)
+      {
+        if (!(filter.text in knownExceptions))
+        {
+          return;
+        }
+        var list = exceptions[filter.selector];
+        var index = list.indexOf(filter);
+        if (index >= 0)
+        {
+          list.splice(index, 1);
+        }
+        delete knownExceptions[filter.text];
+      }
+      else
+      {
+        if (!(filter.text in keyByFilter))
+        {
+          return;
+        }
+        var key = keyByFilter[filter.text];
+        delete filterByKey[key];
+        delete keyByFilter[filter.text];
+        ElemHide.isDirty = true;
+      }
+    },
+    getException: function(filter, docDomain)
+    {
+      var selector = filter.selector;
+      if (!(filter.selector in exceptions))
+      {
+        return null;
+      }
+      var list = exceptions[filter.selector];
+      for (var i = list.length - 1; i >= 0; i--)
+      {
+        if (list[i].isActiveOnDomain(docDomain))
+        {
+          return list[i];
+        }
+      }
+      return null;
+    },
+    _applying: false,
+    _needsApply: false,
+    apply: function()
+    {
+      if (this._applying)
+      {
+        this._needsApply = true;
+        return;
+      }
+      if (!ElemHide.isDirty || !Prefs.enabled)
+      {
+        if (Prefs.enabled && !ElemHide.applied)
+        {
+          try
+          {
+            Utils.styleService.loadAndRegisterSheet(styleURL, Ci.nsIStyleSheetService.USER_SHEET);
+            ElemHide.applied = true;
+          }
+          catch (e)
+          {
+            Cu.reportError(e);
+          }
+        }
+        else if (!Prefs.enabled && ElemHide.applied)
+        {
+          ElemHide.unapply();
+        }
+        return;
+      }
+      IO.writeToFile(styleURL.file, false, this._generateCSSContent(), function(e)
+      {
+        this._applying = false;
+        if (e && e.result == Cr.NS_ERROR_NOT_AVAILABLE)
+        {
+          IO.removeFile(styleURL.file, function(e2){});
+        }
+        else if (e)
+        {
+          Cu.reportError(e);
+        }
+        if (this._needsApply)
+        {
+          this._needsApply = false;
+          this.apply();
+        }
+        else if (!e || e.result == Cr.NS_ERROR_NOT_AVAILABLE)
+        {
+          ElemHide.isDirty = false;
+          ElemHide.unapply();
+          if (!e)
+          {
+            try
+            {
+              Utils.styleService.loadAndRegisterSheet(styleURL, Ci.nsIStyleSheetService.USER_SHEET);
+              ElemHide.applied = true;
+            }
+            catch (e)
+            {
+              Cu.reportError(e);
+            }
+          }
+          FilterNotifier.triggerListeners("elemhideupdate");
+        }
+      }.bind(this), "ElemHideWrite");
+      this._applying = true;
+    },
+    _generateCSSContent: function()
+    {
+      var _generatorResult12 = [];
+      var domains =
+      {
+        __proto__: null
+      };
+      var hasFilters = false;
+      for (var key in filterByKey)
+      {
+        var filter = filterByKey[key];
+        var domain = filter.selectorDomain || "";
+        var list;
+        if (domain in domains)
+        {
+          list = domains[domain];
+        }
+        else
+        {
+          list =
+          {
+            __proto__: null
+          };
+          domains[domain] = list;
+        }
+        list[filter.selector] = key;
+        hasFilters = true;
+      }
+      if (!hasFilters)
+      {
+        throw Cr.NS_ERROR_NOT_AVAILABLE;
+      }
+
+      function escapeChar(match)
+      {
+        return "\\" + match.charCodeAt(0).toString(16) + " ";
+      }
+      var cssTemplate = "-moz-binding: url(about:" + AboutHandler.aboutPrefix + "?%ID%#dummy) !important;";
+      for (var domain in domains)
+      {
+        var rules = [];
+        var list = domains[domain];
+        if (domain)
+        {
+          _generatorResult12.push(("@-moz-document domain(\"" + domain.split(",").join("\"),domain(\"") + "\"){").replace(/[^\x01-\x7F]/g, escapeChar));
+        }
+        else
+        {
+          _generatorResult12.push("@-moz-document url-prefix(\"http://\"),url-prefix(\"https://\"),url-prefix(\"mailbox://\"),url-prefix(\"imap://\"),url-prefix(\"news://\"),url-prefix(\"snews://\"){");
+        }
+        for (var selector in list)
+        {
+          _generatorResult12.push(selector.replace(/[^\x01-\x7F]/g, escapeChar) + "{" + cssTemplate.replace("%ID%", list[selector]) + "}");
+        }
+        _generatorResult12.push("}");
+      }
+      return _generatorResult12;
+    },
+    unapply: function()
+    {
+      if (ElemHide.applied)
+      {
+        try
+        {
+          Utils.styleService.unregisterSheet(styleURL, Ci.nsIStyleSheetService.USER_SHEET);
+        }
+        catch (e)
+        {
+          Cu.reportError(e);
+        }
+        ElemHide.applied = false;
+      }
+    },
+    get styleURL()
+    {
+      return ElemHide.applied ? styleURL.spec : null;
+    },
+    getFilterByKey: function(key)
+    {
+      return key in filterByKey ? filterByKey[key] : null;
+    },
+    getSelectorsForDomain: function(domain, specificOnly)
+    {
+      var result = [];
+      for (var key in filterByKey)
+      {
+        var filter = filterByKey[key];
+        if (specificOnly && (!filter.domains || filter.domains[""]))
+        {
+          continue;
+        }
+        if (filter.isActiveOnDomain(domain) && !this.getException(filter, domain))
+        {
+          result.push(filter.selector);
+        }
+      }
+      return result;
+    }
+  };
+  return exports;
+})();
+require.scopes["filterListener"] = (function()
+{
+  var exports = {};
+  var FilterStorage = require("filterStorage").FilterStorage;
+  var FilterNotifier = require("filterNotifier").FilterNotifier;
+  var ElemHide = require("elemHide").ElemHide;
+  var defaultMatcher = require("matcher").defaultMatcher;
+  var _tempVar18 = require("filterClasses");
+  var ActiveFilter = _tempVar18.ActiveFilter;
+  var RegExpFilter = _tempVar18.RegExpFilter;
+  var ElemHideBase = _tempVar18.ElemHideBase;
+  var Prefs = require("prefs").Prefs;
+  var batchMode = false;
+  var isDirty = 0;
+  var FilterListener = exports.FilterListener =
+  {
+    get batchMode()
+    {
+      return batchMode;
+    },
+    set batchMode(value)
+    {
+      batchMode = value;
+      flushElemHide();
+    },
+    setDirty: function(factor)
+    {
+      if (factor == 0 && isDirty > 0)
+      {
+        isDirty = 1;
+      }
+      else
+      {
+        isDirty += factor;
+      }
+      if (isDirty >= 1)
+      {
+        FilterStorage.saveToDisk();
+      }
+    }
+  };
+  var HistoryPurgeObserver =
+  {
+    observe: function(subject, topic, data)
+    {
+      if (topic == "browser:purge-session-history" && Prefs.clearStatsOnHistoryPurge)
+      {
+        FilterStorage.resetHitCounts();
+        FilterListener.setDirty(0);
+        Prefs.recentReports = [];
+      }
+    },
+    QueryInterface: XPCOMUtils.generateQI([Ci.nsISupportsWeakReference, Ci.nsIObserver])
+  };
+
+  function init()
+  {
+    FilterNotifier.addListener(function(action, item, newValue, oldValue)
+    {
+      var match = /^(\w+)\.(.*)/.exec(action);
+      if (match && match[1] == "filter")
+      {
+        onFilterChange(match[2], item, newValue, oldValue);
+      }
+      else if (match && match[1] == "subscription")
+      {
+        onSubscriptionChange(match[2], item, newValue, oldValue);
+      }
+      else
+      {
+        onGenericChange(action, item);
+      }
+    });
+    var application = require("info").application;
+    if (application == "chrome" || application == "opera")
+    {
+      flushElemHide = function(){};
+    }
+    else
+    {
+      ElemHide.init();
+    }
+    FilterStorage.loadFromDisk();
+    Services.obs.addObserver(HistoryPurgeObserver, "browser:purge-session-history", true);
+    onShutdown.add(function()
+    {
+      Services.obs.removeObserver(HistoryPurgeObserver, "browser:purge-session-history");
+    });
+  }
+  init();
+
+  function flushElemHide()
+  {
+    if (!batchMode && ElemHide.isDirty)
+    {
+      ElemHide.apply();
+    }
+  }
+
+  function addFilter(filter)
+  {
+    if (!(filter instanceof ActiveFilter) || filter.disabled)
+    {
+      return;
+    }
+    var hasEnabled = false;
+    for (var i = 0; i < filter.subscriptions.length; i++)
+    {
+      if (!filter.subscriptions[i].disabled)
+      {
+        hasEnabled = true;
+      }
+    }
+    if (!hasEnabled)
+    {
+      return;
+    }
+    if (filter instanceof RegExpFilter)
+    {
+      defaultMatcher.add(filter);
+    }
+    else if (filter instanceof ElemHideBase)
+    {
+      ElemHide.add(filter);
+    }
+  }
+
+  function removeFilter(filter)
+  {
+    if (!(filter instanceof ActiveFilter))
+    {
+      return;
+    }
+    if (!filter.disabled)
+    {
+      var hasEnabled = false;
+      for (var i = 0; i < filter.subscriptions.length; i++)
+      {
+        if (!filter.subscriptions[i].disabled)
+        {
+          hasEnabled = true;
+        }
+      }
+      if (hasEnabled)
+      {
+        return;
+      }
+    }
+    if (filter instanceof RegExpFilter)
+    {
+      defaultMatcher.remove(filter);
+    }
+    else if (filter instanceof ElemHideBase)
+    {
+      ElemHide.remove(filter);
+    }
+  }
+
+  function onSubscriptionChange(action, subscription, newValue, oldValue)
+  {
+    FilterListener.setDirty(1);
+    if (action != "added" && action != "removed" && action != "disabled" && action != "updated")
+    {
+      return;
+    }
+    if (action != "removed" && !(subscription.url in FilterStorage.knownSubscriptions))
+    {
+      return;
+    }
+    if ((action == "added" || action == "removed" || action == "updated") && subscription.disabled)
+    {
+      return;
+    }
+    if (action == "added" || action == "removed" || action == "disabled")
+    {
+      var method = action == "added" || action == "disabled" && newValue == false ? addFilter : removeFilter;
+      if (subscription.filters)
+      {
+        subscription.filters.forEach(method);
+      }
+    }
+    else if (action == "updated")
+    {
+      subscription.oldFilters.forEach(removeFilter);
+      subscription.filters.forEach(addFilter);
+    }
+    flushElemHide();
+  }
+
+  function onFilterChange(action, filter, newValue, oldValue)
+  {
+    if (action == "hitCount" || action == "lastHit")
+    {
+      FilterListener.setDirty(0.002);
+    }
+    else
+    {
+      FilterListener.setDirty(1);
+    }
+    if (action != "added" && action != "removed" && action != "disabled")
+    {
+      return;
+    }
+    if ((action == "added" || action == "removed") && filter.disabled)
+    {
+      return;
+    }
+    if (action == "added" || action == "disabled" && newValue == false)
+    {
+      addFilter(filter);
+    }
+    else
+    {
+      removeFilter(filter);
+    }
+    flushElemHide();
+  }
+
+  function onGenericChange(action)
+  {
+    if (action == "load")
+    {
+      isDirty = 0;
+      defaultMatcher.clear();
+      ElemHide.clear();
+      for (var _loopIndex19 = 0; _loopIndex19 < FilterStorage.subscriptions.length; ++_loopIndex19)
+      {
+        var subscription = FilterStorage.subscriptions[_loopIndex19];
+        if (!subscription.disabled)
+        {
+          subscription.filters.forEach(addFilter);
+        }
+      }
+      flushElemHide();
+    }
+    else if (action == "save")
+    {
+      isDirty = 0;
+    }
+  }
+  return exports;
+})();
+require.scopes["synchronizer"] = (function()
+{
+  var exports = {};
+  var Utils = require("utils").Utils;
+  var FilterStorage = require("filterStorage").FilterStorage;
+  var FilterNotifier = require("filterNotifier").FilterNotifier;
+  var Prefs = require("prefs").Prefs;
+  var _tempVar20 = require("filterClasses");
+  var Filter = _tempVar20.Filter;
+  var CommentFilter = _tempVar20.CommentFilter;
+  var _tempVar21 = require("subscriptionClasses");
+  var Subscription = _tempVar21.Subscription;
+  var DownloadableSubscription = _tempVar21.DownloadableSubscription;
+  var MILLISECONDS_IN_SECOND = 1000;
+  var SECONDS_IN_MINUTE = 60;
+  var SECONDS_IN_HOUR = 60 * SECONDS_IN_MINUTE;
+  var SECONDS_IN_DAY = 24 * SECONDS_IN_HOUR;
+  var INITIAL_DELAY = 6 * SECONDS_IN_MINUTE;
+  var CHECK_INTERVAL = SECONDS_IN_HOUR;
+  var MIN_EXPIRATION_INTERVAL = 1 * SECONDS_IN_DAY;
+  var MAX_EXPIRATION_INTERVAL = 14 * SECONDS_IN_DAY;
+  var MAX_ABSENSE_INTERVAL = 1 * SECONDS_IN_DAY;
+  var timer = null;
+  var executing =
+  {
+    __proto__: null
+  };
+  var Synchronizer = exports.Synchronizer =
+  {
+    init: function()
+    {
+      var callback = function()
+      {
+        timer.delay = CHECK_INTERVAL * MILLISECONDS_IN_SECOND;
+        checkSubscriptions();
+      };
+      timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
+      timer.initWithCallback(callback, INITIAL_DELAY * MILLISECONDS_IN_SECOND, Ci.nsITimer.TYPE_REPEATING_SLACK);
+      onShutdown.add(function()
+      {
+        timer.cancel();
+      });
+    },
+    isExecuting: function(url)
+    {
+      return url in executing;
+    },
+    execute: function(subscription, manual, forceDownload)
+    {
+      Utils.runAsync(this.executeInternal, this, subscription, manual, forceDownload);
+    },
+    executeInternal: function(subscription, manual, forceDownload)
+    {
+      var url = subscription.url;
+      if (url in executing)
+      {
+        return;
+      }
+      var newURL = subscription.nextURL;
+      var hadTemporaryRedirect = false;
+      subscription.nextURL = null;
+      var loadFrom = newURL;
+      var isBaseLocation = true;
+      if (!loadFrom)
+      {
+        loadFrom = url;
+      }
+      if (loadFrom == url)
+      {
+        if (subscription.alternativeLocations)
+        {
+          var options = [
+            [1, url]
+          ];
+          var totalWeight = 1;
+          for (var _loopIndex22 = 0; _loopIndex22 < subscription.alternativeLocations.split(",").length; ++_loopIndex22)
+          {
+            var alternative = subscription.alternativeLocations.split(",")[_loopIndex22];
+            if (!/^https?:\/\//.test(alternative))
+            {
+              continue;
+            }
+            var weight = 1;
+            var match = /;q=([\d\.]+)$/.exec(alternative);
+            if (match)
+            {
+              weight = parseFloat(match[1]);
+              if (isNaN(weight) || !isFinite(weight) || weight < 0)
+              {
+                weight = 1;
+              }
+              if (weight > 10)
+              {
+                weight = 10;
+              }
+              alternative = alternative.substr(0, match.index);
+            }
+            options.push([weight, alternative]);
+            totalWeight += weight;
+          }
+          var choice = Math.random() * totalWeight;
+          for (var _loopIndex23 = 0; _loopIndex23 < options.length; ++_loopIndex23)
+          {
+            var _tempVar24 = options[_loopIndex23];
+            var weight = _tempVar24[0];
+            var alternative = _tempVar24[1];
+            choice -= weight;
+            if (choice < 0)
+            {
+              loadFrom = alternative;
+              break;
+            }
+          }
+          isBaseLocation = loadFrom == url;
+        }
+      }
+      else
+      {
+        forceDownload = true;
+      }
+      var addonVersion = require("info").addonVersion;
+      loadFrom = loadFrom.replace(/%VERSION%/, "ABP" + addonVersion);
+      var request = null;
+
+      function errorCallback(error)
+      {
+        var channelStatus = -1;
+        try
+        {
+          channelStatus = request.channel.status;
+        }
+        catch (e){}
+        var responseStatus = "";
+        try
+        {
+          responseStatus = request.channel.QueryInterface(Ci.nsIHttpChannel).responseStatus;
+        }
+        catch (e){}
+        setError(subscription, error, channelStatus, responseStatus, loadFrom, isBaseLocation, manual);
+      }
+      try
+      {
+        request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].createInstance(Ci.nsIXMLHttpRequest);
+        request.mozBackgroundRequest = true;
+        request.open("GET", loadFrom);
+      }
+      catch (e)
+      {
+        errorCallback("synchronize_invalid_url");
+        return;
+      }
+      try
+      {
+        request.overrideMimeType("text/plain");
+        request.channel.loadFlags = request.channel.loadFlags | request.channel.INHIBIT_CACHING | request.channel.VALIDATE_ALWAYS;
+        if (request.channel instanceof Ci.nsIHttpChannel)
+        {
+          request.channel.redirectionLimit = 5;
+        }
+        var oldNotifications = request.channel.notificationCallbacks;
+        var oldEventSink = null;
+        request.channel.notificationCallbacks =
+        {
+          QueryInterface: XPCOMUtils.generateQI([Ci.nsIInterfaceRequestor, Ci.nsIChannelEventSink]),
+          getInterface: function(iid)
+          {
+            if (iid.equals(Ci.nsIChannelEventSink))
+            {
+              try
+              {
+                oldEventSink = oldNotifications.QueryInterface(iid);
+              }
+              catch (e){}
+              return this;
+            }
+            if (oldNotifications)
+            {
+              return oldNotifications.QueryInterface(iid);
+            }
+            else
+            {
+              throw Cr.NS_ERROR_NO_INTERFACE;
+            }
+          },
+          asyncOnChannelRedirect: function(oldChannel, newChannel, flags, callback)
+          {
+            if (isBaseLocation && !hadTemporaryRedirect && oldChannel instanceof Ci.nsIHttpChannel)
+            {
+              try
+              {
+                subscription.alternativeLocations = oldChannel.getResponseHeader("X-Alternative-Locations");
+              }
+              catch (e)
+              {
+                subscription.alternativeLocations = null;
+              }
+            }
+            if (flags & Ci.nsIChannelEventSink.REDIRECT_TEMPORARY)
+            {
+              hadTemporaryRedirect = true;
+            }
+            else if (!hadTemporaryRedirect)
+            {
+              newURL = newChannel.URI.spec;
+            }
+            if (oldEventSink)
+            {
+              oldEventSink.asyncOnChannelRedirect(oldChannel, newChannel, flags, callback);
+            }
+            else
+            {
+              callback.onRedirectVerifyCallback(Cr.NS_OK);
+            }
+          }
+        };
+      }
+      catch (e)
+      {
+        Cu.reportError(e);
+      }
+      if (subscription.lastModified && !forceDownload)
+      {
+        request.setRequestHeader("If-Modified-Since", subscription.lastModified);
+      }
+      request.addEventListener("error", function(ev)
+      {
+        if (onShutdown.done)
+        {
+          return;
+        }
+        delete executing[url];
+        try
+        {
+          request.channel.notificationCallbacks = null;
+        }
+        catch (e){}
+        errorCallback("synchronize_connection_error");
+      }, false);
+      request.addEventListener("load", function(ev)
+      {
+        if (onShutdown.done)
+        {
+          return;
+        }
+        delete executing[url];
+        try
+        {
+          request.channel.notificationCallbacks = null;
+        }
+        catch (e){}
+        if (request.status && request.status != 200 && request.status != 304)
+        {
+          errorCallback("synchronize_connection_error");
+          return;
+        }
+        var newFilters = null;
+        if (request.status != 304)
+        {
+          newFilters = readFilters(subscription, request.responseText, errorCallback);
+          if (!newFilters)
+          {
+            return;
+          }
+          subscription.lastModified = request.getResponseHeader("Last-Modified");
+        }
+        if (isBaseLocation && !hadTemporaryRedirect)
+        {
+          subscription.alternativeLocations = request.getResponseHeader("X-Alternative-Locations");
+        }
+        subscription.lastSuccess = subscription.lastDownload = Math.round(Date.now() / MILLISECONDS_IN_SECOND);
+        subscription.downloadStatus = "synchronize_ok";
+        subscription.errors = 0;
+        var now = Math.round(((new Date(request.getResponseHeader("Date"))).getTime() || Date.now()) / MILLISECONDS_IN_SECOND);
+        var expires = Math.round((new Date(request.getResponseHeader("Expires"))).getTime() / MILLISECONDS_IN_SECOND) || 0;
+        var expirationInterval = expires ? expires - now : 0;
+        for (var _loopIndex25 = 0; _loopIndex25 < (newFilters || subscription.filters).length; ++_loopIndex25)
+        {
+          var filter = (newFilters || subscription.filters)[_loopIndex25];
+          if (!(filter instanceof CommentFilter))
+          {
+            continue;
+          }
+          var match = /\bExpires\s*(?::|after)\s*(\d+)\s*(h)?/i.exec(filter.text);
+          if (match)
+          {
+            var interval = parseInt(match[1], 10);
+            if (match[2])
+            {
+              interval *= SECONDS_IN_HOUR;
+            }
+            else
+            {
+              interval *= SECONDS_IN_DAY;
+            }
+            if (interval > expirationInterval)
+            {
+              expirationInterval = interval;
+            }
+          }
+        }
+        expirationInterval = Math.min(Math.max(expirationInterval, MIN_EXPIRATION_INTERVAL), MAX_EXPIRATION_INTERVAL);
+        subscription.expires = subscription.lastDownload + expirationInterval * 2;
+        subscription.softExpiration = subscription.lastDownload + Math.round(expirationInterval * (Math.random() * 0.4 + 0.8));
+        if (newFilters)
+        {
+          var fixedTitle = false;
+          for (var i = 0; i < newFilters.length; i++)
+          {
+            var filter = newFilters[i];
+            if (!(filter instanceof CommentFilter))
+            {
+              continue;
+            }
+            var match = /^!\s*(\w+)\s*:\s*(.*)/.exec(filter.text);
+            if (match)
+            {
+              var keyword = match[1].toLowerCase();
+              var value = match[2];
+              var known = true;
+              if (keyword == "redirect")
+              {
+                if (isBaseLocation && value != url)
+                {
+                  subscription.nextURL = value;
+                }
+              }
+              else if (keyword == "homepage")
+              {
+                var uri = Utils.makeURI(value);
+                if (uri && (uri.scheme == "http" || uri.scheme == "https"))
+                {
+                  subscription.homepage = uri.spec;
+                }
+              }
+              else if (keyword == "title")
+              {
+                if (value)
+                {
+                  subscription.title = value;
+                  fixedTitle = true;
+                }
+              }
+              else
+              {
+                known = false;
+              }
+              if (known)
+              {
+                newFilters.splice(i--, 1);
+              }
+            }
+          }
+          subscription.fixedTitle = fixedTitle;
+        }
+        if (isBaseLocation && newURL && newURL != url)
+        {
+          var listed = subscription.url in FilterStorage.knownSubscriptions;
+          if (listed)
+          {
+            FilterStorage.removeSubscription(subscription);
+          }
+          url = newURL;
+          var newSubscription = Subscription.fromURL(url);
+          for (var key in newSubscription)
+          {
+            delete newSubscription[key];
+          }
+          for (var key in subscription)
+          {
+            newSubscription[key] = subscription[key];
+          }
+          delete Subscription.knownSubscriptions[subscription.url];
+          newSubscription.oldSubscription = subscription;
+          subscription = newSubscription;
+          subscription.url = url;
+          if (!(subscription.url in FilterStorage.knownSubscriptions) && listed)
+          {
+            FilterStorage.addSubscription(subscription);
+          }
+        }
+        if (newFilters)
+        {
+          FilterStorage.updateSubscriptionFilters(subscription, newFilters);
+        }
+        delete subscription.oldSubscription;
+      }, false);
+      executing[url] = true;
+      FilterNotifier.triggerListeners("subscription.downloadStatus", subscription);
+      try
+      {
+        request.send(null);
+      }
+      catch (e)
+      {
+        delete executing[url];
+        errorCallback("synchronize_connection_error");
+        return;
+      }
+    }
+  };
+  Synchronizer.init();
+
+  function checkSubscriptions()
+  {
+    if (!Prefs.subscriptions_autoupdate)
+    {
+      return;
+    }
+    var time = Math.round(Date.now() / MILLISECONDS_IN_SECOND);
+    for (var _loopIndex26 = 0; _loopIndex26 < FilterStorage.subscriptions.length; ++_loopIndex26)
+    {
+      var subscription = FilterStorage.subscriptions[_loopIndex26];
+      if (!(subscription instanceof DownloadableSubscription))
+      {
+        continue;
+      }
+      if (subscription.lastCheck && time - subscription.lastCheck > MAX_ABSENSE_INTERVAL)
+      {
+        subscription.softExpiration += time - subscription.lastCheck;
+      }
+      subscription.lastCheck = time;
+      if (subscription.expires - time > MAX_EXPIRATION_INTERVAL)
+      {
+        subscription.expires = time + MAX_EXPIRATION_INTERVAL;
+      }
+      if (subscription.softExpiration - time > MAX_EXPIRATION_INTERVAL)
+      {
+        subscription.softExpiration = time + MAX_EXPIRATION_INTERVAL;
+      }
+      if (subscription.softExpiration > time && subscription.expires > time)
+      {
+        continue;
+      }
+      if (time - subscription.lastDownload >= MIN_EXPIRATION_INTERVAL)
+      {
+        Synchronizer.execute(subscription, false);
+      }
+    }
+  }
+
+  function readFilters(subscription, text, errorCallback)
+  {
+    var lines = text.split(/[\r\n]+/);
+    var match = /\[Adblock(?:\s*Plus\s*([\d\.]+)?)?\]/i.exec(lines[0]);
+    if (!match)
+    {
+      errorCallback("synchronize_invalid_data");
+      return null;
+    }
+    var minVersion = match[1];
+    for (var i = 0; i < lines.length; i++)
+    {
+      var match = /!\s*checksum[\s\-:]+([\w\+\/]+)/i.exec(lines[i]);
+      if (match)
+      {
+        lines.splice(i, 1);
+        var checksum = Utils.generateChecksum(lines);
+        if (checksum && checksum != match[1])
+        {
+          errorCallback("synchronize_checksum_mismatch");
+          return null;
+        }
+        break;
+      }
+    }
+    delete subscription.requiredVersion;
+    delete subscription.upgradeRequired;
+    if (minVersion)
+    {
+      var addonVersion = require("info").addonVersion;
+      subscription.requiredVersion = minVersion;
+      if (Services.vc.compare(minVersion, addonVersion) > 0)
+      {
+        subscription.upgradeRequired = true;
+      }
+    }
+    lines.shift();
+    var result = [];
+    for (var _loopIndex27 = 0; _loopIndex27 < lines.length; ++_loopIndex27)
+    {
+      var line = lines[_loopIndex27];
+      line = Filter.normalize(line);
+      if (line)
+      {
+        result.push(Filter.fromText(line));
+      }
+    }
+    return result;
+  }
+
+  function setError(subscription, error, channelStatus, responseStatus, downloadURL, isBaseLocation, manual)
+  {
+    if (!isBaseLocation)
+    {
+      subscription.alternativeLocations = null;
+    }
+    try
+    {
+      Cu.reportError("Adblock Plus: Downloading filter subscription " + subscription.title + " failed (" + Utils.getString(error) + ")\n" + "Download address: " + downloadURL + "\n" + "Channel status: " + channelStatus + "\n" + "Server response: " + responseStatus);
+    }
+    catch (e){}
+    subscription.lastDownload = Math.round(Date.now() / MILLISECONDS_IN_SECOND);
+    subscription.downloadStatus = error;
+    if (!manual)
+    {
+      if (error == "synchronize_checksum_mismatch")
+      {
+        subscription.errors = 0;
+      }
+      else
+      {
+        subscription.errors++;
+      }
+      if (subscription.errors >= Prefs.subscriptions_fallbackerrors && /^https?:\/\//i.test(subscription.url))
+      {
+        subscription.errors = 0;
+        var fallbackURL = Prefs.subscriptions_fallbackurl;
+        var addonVersion = require("info").addonVersion;
+        fallbackURL = fallbackURL.replace(/%VERSION%/g, encodeURIComponent(addonVersion));
+        fallbackURL = fallbackURL.replace(/%SUBSCRIPTION%/g, encodeURIComponent(subscription.url));
+        fallbackURL = fallbackURL.replace(/%URL%/g, encodeURIComponent(downloadURL));
+        fallbackURL = fallbackURL.replace(/%ERROR%/g, encodeURIComponent(error));
+        fallbackURL = fallbackURL.replace(/%CHANNELSTATUS%/g, encodeURIComponent(channelStatus));
+        fallbackURL = fallbackURL.replace(/%RESPONSESTATUS%/g, encodeURIComponent(responseStatus));
+        var request = Cc["@mozilla.org/xmlextras/xmlhttprequest;1"].createInstance(Ci.nsIXMLHttpRequest);
+        request.mozBackgroundRequest = true;
+        request.open("GET", fallbackURL);
+        request.overrideMimeType("text/plain");
+        request.channel.loadFlags = request.channel.loadFlags | request.channel.INHIBIT_CACHING | request.channel.VALIDATE_ALWAYS;
+        request.addEventListener("load", function(ev)
+        {
+          if (onShutdown.done)
+          {
+            return;
+          }
+          if (!(subscription.url in FilterStorage.knownSubscriptions))
+          {
+            return;
+          }
+          var match = /^(\d+)(?:\s+(\S+))?$/.exec(request.responseText);
+          if (match && match[1] == "301" && match[2])
+          {
+            subscription.nextURL = match[2];
+          }
+          else if (match && match[1] == "410")
+          {
+            var data = "[Adblock]\n" + subscription.filters.map(function(f)
+            {
+              return f.text;
+            }).join("\n");
+            var url = "data:text/plain," + encodeURIComponent(data);
+            var newSubscription = Subscription.fromURL(url);
+            newSubscription.title = subscription.title;
+            newSubscription.disabled = subscription.disabled;
+            FilterStorage.removeSubscription(subscription);
+            FilterStorage.addSubscription(newSubscription);
+            Synchronizer.execute(newSubscription);
+          }
+        }, false);
+        request.send(null);
+      }
+    }
+  }
+  return exports;
+})();