Android Open Source - Todo Local File Task Repository

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * This file is part of Todo.txt for Android, an app for managing your todo.txt file (http://todotxt.com).
 */*ww  w .j  av  a2s  .c o  m*/
 * Copyright (c) 2009-2013 Todo.txt for Android contributors (http://todotxt.com)
 *
 * LICENSE:
 *
 * Todo.txt for Android is free software: you can redistribute it and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any
 * later version.
 *
 * Todo.txt for Android 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 Todo.txt for Android. If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * Todo.txt for Android's source code is available at https://github.com/ginatrapani/todo.txt-android
 *
 * @author Todo.txt for Android contributors <todotxt@yahoogroups.com>
 * @license http://www.gnu.org/licenses/gpl.html
 * @copyright 2009-2013 Todo.txt for Android contributors (http://todotxt.com)
 */

package com.todotxt.todotxttouch.task;

import android.util.Log;
import com.todotxt.todotxttouch.TodoApplication;
import com.todotxt.todotxttouch.TodoException;
import com.todotxt.todotxttouch.util.TaskIo;
import com.todotxt.todotxttouch.util.Util;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;

/**
 * A task repository for interacting with the local file system
 * @author Tim Barlotta
 */
class LocalFileTaskRepository implements LocalTaskRepository {
  final static File TODO_TXT_FILE = new File(
    TodoApplication.getAppContetxt().getFilesDir(),
    "todo.txt"
  );
  final static File DONE_TXT_FILE = new File(
    TodoApplication.getAppContetxt().getFilesDir(),
    "done.txt"
  );
  private static final String TAG = LocalFileTaskRepository.class.getSimpleName();

  @Override
  public void init() {
    try {
      if (!TODO_TXT_FILE.exists()) {
        Util.createParentDirectory(TODO_TXT_FILE);
        TODO_TXT_FILE.createNewFile();
      }
    } catch (IOException e) {
      throw new TodoException("Error initializing LocalFile", e);
    }
  }

  @Override
  public void purge() {
    TODO_TXT_FILE.delete();
    DONE_TXT_FILE.delete();
  }

  @Override
  public ArrayList<Task> load() {
    init();

    if (!TODO_TXT_FILE.exists()) {
      Log.w(TAG, TODO_TXT_FILE.getAbsolutePath() + " does not exist!");

      throw new TodoException(TODO_TXT_FILE.getAbsolutePath() + " does not exist!");
    } else {
      try {
        return TaskIo.loadTasksFromFile(TODO_TXT_FILE);
      } catch (IOException e) {
        throw new TodoException("Error loading from local file", e);
      }
    }
  }

  @Override
  public void store(ArrayList<Task> tasks) {
    TaskIo.writeToFile(tasks, TODO_TXT_FILE);
  }

  @Override
  public void archive(ArrayList<Task> tasks) {
    ArrayList<Task> completedTasks = new ArrayList<Task>(tasks.size());
    ArrayList<Task> incompleteTasks = new ArrayList<Task>(tasks.size());

    for (Task task : tasks) {
      if (task.isCompleted()) {
        completedTasks.add(task);
      } else {
        incompleteTasks.add(task);
      }
    }

    // append completed tasks to done.txt
    TaskIo.writeToFile(completedTasks, DONE_TXT_FILE, true);

    // write incomplete tasks back to todo.txt
    // TODO: remove blank lines (if we ever add support for
    // PRESERVE_BLANK_LINES)
    TaskIo.writeToFile(incompleteTasks, TODO_TXT_FILE, false);
  }

  @Override
  public ArrayList<Task> loadDoneTasks() {
    init();
    if (!DONE_TXT_FILE.exists()) {
      Log.i(TAG, DONE_TXT_FILE.getAbsolutePath() + " does not exist");

      return new ArrayList<Task>();
    } else {
      try {
        return TaskIo.loadTasksFromFile(DONE_TXT_FILE);
      } catch (IOException e) {
        throw new TodoException("Error loading done tasks from local file", e);
      }
    }
  }

  @Override
  public void storeDoneTasks(ArrayList<Task> tasks) {
    TaskIo.writeToFile(tasks, DONE_TXT_FILE, false);
  }

  @Override
  public void storeDoneTasks(File file) {
    Util.renameFile(file, DONE_TXT_FILE, true);
  }

  @Override
  public boolean todoFileModifiedSince(Date date) {
    long date_ms = 0l;

    if (date != null) {
      date_ms = date.getTime();
    }

    return date_ms < TODO_TXT_FILE.lastModified();
  }

  @Override
  public boolean doneFileModifiedSince(Date date) {
    long date_ms = 0l;

    if (date != null) {
      date_ms = date.getTime();
    }

    return date_ms < DONE_TXT_FILE.lastModified();
  }
}

Java Source Code List

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