Android Open Source - Todo Text Splitter

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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).
 *//from www. j  a  v a  2s .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 java.util.regex.Matcher;
import java.util.regex.Pattern;

class TextSplitter {
  private final static Pattern COMPLETED_PATTERN = Pattern.compile("^([X,x] )(.*)");

  private final static Pattern COMPLETED_PREPENDED_DATES_PATTERN = Pattern
    .compile("^(\\d{4}-\\d{2}-\\d{2}) (\\d{4}-\\d{2}-\\d{2}) (.*)");

  private final static Pattern SINGLE_DATE_PATTERN = Pattern
    .compile("^(\\d{4}-\\d{2}-\\d{2}) (.*)");

  private final static TextSplitter INSTANCE = new TextSplitter();

  private TextSplitter() {
  }

  public static TextSplitter getInstance() {
    return INSTANCE;
  }

  public SplitResult split(String inputText) {
    if (inputText == null) {
      return new SplitResult(Priority.NONE, "", "", false, "");
    }

    Matcher completedMatcher = COMPLETED_PATTERN.matcher(inputText);
    boolean completed;
    String text;

    if (completedMatcher.find()) {
      completed = true;
      text = completedMatcher.group(2);
    } else {
      completed = false;
      text = inputText;
    }

    Priority priority = Priority.NONE;

    if (!completed) {
      PriorityTextSplitter.PrioritySplitResult prioritySplitResult = PriorityTextSplitter
        .getInstance().split(text);
      priority = prioritySplitResult.priority;
      text = prioritySplitResult.text;
    }

    String completedDate = "";
    String prependedDate = "";

    if (completed) {
      Matcher completedAndPrependedDatesMatcher = COMPLETED_PREPENDED_DATES_PATTERN
        .matcher(text);
      if (completedAndPrependedDatesMatcher.find()) {
        completedDate = completedAndPrependedDatesMatcher.group(1);
        prependedDate = completedAndPrependedDatesMatcher.group(2);
        text = completedAndPrependedDatesMatcher.group(3);
      } else {
        Matcher completionDateMatcher = SINGLE_DATE_PATTERN
          .matcher(text);
        if (completionDateMatcher.find()) {
          completedDate = completionDateMatcher.group(1);
          text = completionDateMatcher.group(2);
        }
      }
    } else {
      Matcher prependedDateMatcher = SINGLE_DATE_PATTERN.matcher(text);

      if (prependedDateMatcher.find()) {
        text = prependedDateMatcher.group(2);
        prependedDate = prependedDateMatcher.group(1);
      }
    }

    return new SplitResult(priority, text, prependedDate, completed, completedDate);
  }

  static class SplitResult {
    public final Priority priority;
    public final String text;
    public final String prependedDate;
    public final boolean completed;
    public final String completedDate;

    private SplitResult(Priority priority, String text,
      String prependedDate, boolean completed, String completedDate) {
      this.priority = priority;
      this.text = text;
      this.prependedDate = prependedDate;
      this.completed = completed;
      this.completedDate = completedDate;
    }
  }
}

Java Source Code List

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