Issue 4023 - Move storage of subscription lists to localStorage - adblockplusedgems

lib/adblockplus.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 339 matching lines @@
 require.scopes["io"] = (function()
 {
   var exports = {};
   var keyPrefix = "file:";
 
   function fileToKey(file)
   {
     return keyPrefix + (file instanceof FakeFile ? file.path : file.spec);
   }
 
-  function loadFile(file, successCallback, errorCallback)
+  function loadFile(file)
   {
+    return new Promise(function(resolve, reject)
+    {
+      var key = fileToKey(file);
+      ext.storage.get([key], function(items)
+      {
+        var entry = items[key];
+        if (!entry)
+        {
+          try
+          {
+            entry = JSON.parse(window.localStorage.getItem(key));
+          }
+          catch (err)
+          {}
+        }
+        if (entry)
+        {
+          resolve(entry);
+        }
+        else
+        {
+          reject(new Error("File doesn't exist"));
+        }
+      });
+    }.bind(this));
+  }
+  function saveFile(file, data, callback)
+  {
+    var entry = {};
     var key = fileToKey(file);
-    var entry = localStorage.getItem(key);
-    if (entry)
+
+    if (typeof browser == "undefined")
     {
-      successCallback(JSON.parse(entry));
+      entry[key] = {
+        lastModified: Date.now(),
+        content: data
+      };
+      ext.storage.set(entry, callback);
     }
     else
     {
-      // Also check the chrome.storage.local
-      // We may have a init data there
-      ext.storage.get([key], function(items)
-      {
-        var entry = items[key];
-        if (entry)
-          successCallback(entry);
-        else
-          errorCallback(new Error("File doesn't exist"));
-      });
-    }
-  }
-  function saveFile(file, data, callback)
-  {
-    try
-    {
-      localStorage.setItem(fileToKey(file), JSON.stringify({
-        content: data,
-        lastModified: Date.now()
-      }));
-    }
-    catch(error)
-    {
-      // QuotaExceededError can happen. Notify the user and ignore
-      var errorMessage = "Subscription storage is full. " + 
-        "Please remove some subscriptions and try again.";
-      alert(errorMessage);

[Oleksandr, 2016/09/10 00:35:38]

The alert was here

-      callback(new Error(errorMessage));
-      return;
+      var processedData = LZString.compressToUTF16(JSON.stringify(data));
+      ext.storage.remove(key);
+      entry[key] = {
+        lastModified: Date.now(),
+        content: processedData,
+        compressed: true
+      };
+      window.localStorage.setItem(key, JSON.stringify(entry[key]));
+      setTimeout(callback, 0);
     }
     callback();
   }
   exports.IO = {
     resolveFilePath: function(path)
     {
       return new FakeFile(path);
     },
     readFromFile: function(file, listener, callback)
     {
       function onLoaded(entry)
       {
-        for (var _loopIndex1 = 0; _loopIndex1 < entry.content.length; ++_loopIndex1)
+        if ("content" in entry)
         {
-          var line = entry.content[_loopIndex1];
-          listener.process(line);
+          if (entry["compressed"])
+          {
+            entry.content = JSON.parse(LZString.decompressFromUTF16(entry.content));
+          }
+          for (var _loopIndex15 = 0; _loopIndex15 < entry.content.length; ++_loopIndex15)
+          {
+            var line = entry.content[_loopIndex15];
+            listener.process(line);
+          }
         }
-        listener.process(null);
         callback(null);
       }
-      loadFile(file, onLoaded, callback);
+      loadFile(file).then(onLoaded, callback);
     },
     writeToFile: function(file, data, callback)
     {
       saveFile(file, data, callback);
     },
     copyFile: function(fromFile, toFile, callback)
     {
       function onLoaded(entry)
       {
         saveFile(toFile, entry.content, callback);
       }
-      loadFile(fromFile, onLoaded, callback);
+      loadFile(file).then(onLoaded, callback);
     },
     renameFile: function(fromFile, newName, callback)
     {
       function onLoaded()
       {
         ext.storage.remove(fileToKey(fromFile), function()
         {
           ext.storage.set(keyPrefix + newName, entry, callback);
         });
       }
-      loadFile(fromFile, onLoaded, callback);
+      loadFile(file).then(onLoaded, callback);
     },
     removeFile: function(file, callback)
     {
       ext.storage.remove(fileToKey(file), callback);
     },
     statFile: function(file, callback)
     {
       function onLoaded(entry)
       {
         callback(null,
         {
           exists: true,
           lastModified: entry.lastModified
         });
       }
-      loadFile(file, onLoaded, callback);
+      loadFile(file).then(onLoaded, callback);
     }
   };
   return exports;
 })();
 require.scopes["downloader"] = (function()
 {
   var exports = {};
   var Utils = require("utils").Utils;
   var MILLIS_IN_SECOND = exports.MILLIS_IN_SECOND = 1000;
   var MILLIS_IN_MINUTE = exports.MILLIS_IN_MINUTE = 60 * MILLIS_IN_SECOND;
@@ skipping 6085 matching lines @@
     search.push("notificationDownloadCount=" + encodeURIComponent(downlCount));
     chrome.runtime.setUninstallURL(Utils.getDocLink("uninstalled") + "&" + search.join("&"));
   }
   if ("setUninstallURL" in chrome.runtime)
   {
     Prefs.untilLoaded.then(setUninstallURL);
     Prefs.on("notificationdata", setUninstallURL);
   }
   return exports;
 })();