Issue 2021 - Replaced FileSystem API with chrome.storage.local

lib/filesystem/io.js

Index: lib/filesystem/io.js
===================================================================
deleted file mode 100644
--- a/lib/filesystem/io.js
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
- * This file is part of Adblock Plus <https://adblockplus.org/>,
- * Copyright (C) 2006-2015 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
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-//
-// No direct file system access, using FileSystem API
-//
-
-var IO = exports.IO =
-{
-  _getFileEntry: function(file, create, successCallback, errorCallback)
-  {
-    if (file instanceof FakeFile)
-      file = file.path;
-    else if ("spec" in file)
-      file = file.spec;
-
-    // Remove directory path - we operate on a single directory in Chrome
-    file = file.replace(/^.*[\/\\]/, "");
-
-    // We request a gigabyte of space, just in case
-    (window.requestFileSystem || window.webkitRequestFileSystem)(window.PERSISTENT, 1024*1024*1024, function(fs)
-    {
-      fs.root.getFile(file, {create: create}, function(fileEntry)
-      {
-        successCallback(fs, fileEntry);
-      }, errorCallback);
-    }, errorCallback);
-  },
-
-  lineBreak: "\n",
-
-  resolveFilePath: function(path)
-  {
-    return new FakeFile(path);
-  },
-
-  readFromFile: function(file, listener, callback, timeLineID)
-  {
-    this._getFileEntry(file, false, function(fs, fileEntry)
-    {
-      fileEntry.file(function(file)
-      {
-        if (file.size == 0)
-        {
-          callback("File is empty");
-          return;
-        }
-
-        var reader = new FileReader();
-        reader.onloadend = function()
-        {
-          if (reader.error)
-            callback(reader.error);
-          else
-          {
-            var lines = reader.result.split(/[\r\n]+/);
-            for (var i = 0; i < lines.length; i++)
-              listener.process(lines[i]);
-            listener.process(null);
-            callback(null);
-          }
-        };
-        reader.readAsText(file);
-      }, callback);
-    }, callback);
-  },
-
-  writeToFile: function(file, data, callback, timeLineID)
-  {
-    this._getFileEntry(file, true, function(fs, fileEntry)
-    {
-      fileEntry.createWriter(function(writer)
-      {
-        var executeWriteOperation = function(op, nextOperation)
-        {
-          writer.onwriteend = function()
-          {
-            if (writer.error)
-              callback(writer.error);
-            else
-              nextOperation();
-          }.bind(this);
-
-          op();
-        }.bind(this);
-
-        var blob;
-
-        try
-        {
-          blob = new Blob([data.join(this.lineBreak) + this.lineBreak], {type: "text/plain"});
-        }
-        catch (e)
-        {
-          if (!(e instanceof TypeError))
-            throw e;
-
-          // Blob wasn't a constructor before Chrome 20
-          var builder = new (window.BlobBuilder || window.WebKitBlobBuilder);
-          builder.append(data.join(this.lineBreak) + this.lineBreak);
-          blob = builder.getBlob("text/plain");
-        }
-        executeWriteOperation(writer.write.bind(writer, blob), function()
-        {
-          executeWriteOperation(writer.truncate.bind(writer, writer.position), callback.bind(null, null));
-        });
-      }.bind(this), callback);
-    }.bind(this), callback);
-  },
-
-  copyFile: function(fromFile, toFile, callback)
-  {
-    // Simply combine read and write operations
-    var data = [];
-    this.readFromFile(fromFile, {
-      process: function(line)
-      {
-        if (line !== null)
-          data.push(line);
-      }
-    }, function(e)
-    {
-      if (e)
-        callback(e);
-      else
-        this.writeToFile(toFile, data, callback);
-    }.bind(this));
-  },
-
-  renameFile: function(fromFile, newName, callback)
-  {
-    this._getFileEntry(fromFile, false, function(fs, fileEntry)
-    {
-      fileEntry.moveTo(fs.root, newName, function()
-      {
-        callback(null);
-      }, callback);
-    }, callback);
-  },
-
-  removeFile: function(file, callback)
-  {
-    this._getFileEntry(file, false, function(fs, fileEntry)
-    {
-      fileEntry.remove(function()
-      {
-        callback(null);
-      }, callback);
-    }, callback);
-  },
-
-  statFile: function(file, callback)
-  {
-    // This needs to use Utils.runAsync(), otherwise FilterStorage might
-    // initialize too early - see #337.
-    require("utils").Utils.runAsync(function() {
-      this._getFileEntry(file, false, function(fs, fileEntry)
-      {
-        fileEntry.getMetadata(function(metadata)
-        {
-          callback(null, {
-            exists: true,
-            isDirectory: fileEntry.isDirectory,
-            isFile: fileEntry.isFile,
-            lastModified: metadata.modificationTime.getTime()
-          });
-        }, callback);
-      }, callback);
-    }.bind(this));
-  }
-};