Issue 6621

lib/io.js

Index: lib/io.js
diff --git a/lib/io.js b/lib/io.js
deleted file mode 100644
index a919c5dbe6d83e8e4d092b00a85247c0e4fb5620..0000000000000000000000000000000000000000
--- a/lib/io.js
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * This file is part of Adblock Plus <https://adblockplus.org/>,
- * Copyright (C) 2006-present 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/>.
- */
-
-"use strict";
-
-const keyPrefix = "file:";
-
-function fileToKey(fileName)
-{
-  return keyPrefix + fileName;
-}
-
-function loadFile(fileName)
-{
-  let key = fileToKey(fileName);
-  return browser.storage.local.get(key).then(items =>
-  {
-    let entry = items[key];
-    if (entry)
-      return entry;
-    throw {type: "NoSuchFile"};
-  });
-}
-
-function saveFile(fileName, data)
-{
-  return browser.storage.local.set({
-    [fileToKey(fileName)]: {
-      content: Array.from(data),
-      lastModified: Date.now()
-    }
-  });
-}
-
-exports.IO =
-{
-  /**
-   * Reads text lines from a file.
-   * @param {string} fileName
-   *    Name of the file to be read
-   * @param {TextSink} listener
-   *    Function that will be called for each line in the file
-   * @return {Promise}
-   *    Promise to be resolved or rejected once the operation is completed
-   */
-  readFromFile(fileName, listener)
-  {
-    return loadFile(fileName).then(entry =>
-    {
-      for (let line of entry.content)
-        listener(line);
-    });
-  },
-
-  /**
-   * Writes text lines to a file.
-   * @param {string} fileName
-   *    Name of the file to be written
-   * @param {Iterable.<string>} data
-   *    An array-like or iterable object containing the lines (without line
-   *    endings)
-   * @return {Promise}
-   *    Promise to be resolved or rejected once the operation is completed
-   */
-  writeToFile(fileName, data)
-  {
-    return saveFile(fileName, data);
-  },
-
-  /**
-   * Copies a file.
-   * @param {string} fromFile
-   *    Name of the file to be copied
-   * @param {string} toFile
-   *    Name of the file to be written, will be overwritten if exists
-   * @return {Promise}
-   *    Promise to be resolved or rejected once the operation is completed
-   */
-  copyFile(fromFile, toFile)
-  {
-    return loadFile(fromFile).then(entry => saveFile(toFile, entry.content));
-  },
-
-  /**
-   * Renames a file.
-   * @param {string} fromFile
-   *    Name of the file to be renamed
-   * @param {string} newName
-   *    New file name, will be overwritten if exists
-   * @return {Promise}
-   *    Promise to be resolved or rejected once the operation is completed
-   */
-  renameFile(fromFile, newName)
-  {
-    return loadFile(fromFile)
-      .then(entry => browser.storage.local.set({[fileToKey(newName)]: entry}))
-      .then(() => this.removeFile(fromFile));
-  },
-
-  /**
-   * Removes a file.
-   * @param {string} fileName
-   *    Name of the file to be removed
-   * @return {Promise}
-   *    Promise to be resolved or rejected once the operation is completed
-   */
-  removeFile(fileName)
-  {
-    return browser.storage.local.remove(fileToKey(fileName));
-  },
-
-  /**
-   * Retrieves file metadata.
-   * @param {string} fileName
-   *    Name of the file to be looked up
-   * @return {Promise.<StatData>}
-   *    Promise to be resolved with file metadata once the operation is
-   *    completed
-   */
-  statFile(fileName)
-  {
-    return loadFile(fileName).then(entry =>
-    {
-      return {
-        exists: true,
-        lastModified: entry.lastModified
-      };
-    }).catch(error =>
-    {
-      if (error.type == "NoSuchFile")
-        return {exists: false};
-      throw error;
-    });
-  }
-};