Android Open Source - Todo Mail Address Parser

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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. ja v a  2 s . c  om
 * 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.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MailAddressParser {
  private static final Pattern MAIL_ADDRESS_PATTERN = Pattern
    .compile("[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" + "\\@"
        + "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" + "(" + "\\."
        + "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" + ")+"
    );
  private static final MailAddressParser INSTANCE = new MailAddressParser();

  private MailAddressParser() {
  }

  public static MailAddressParser getInstance() {
    return INSTANCE;
  }

  public List<String> parse(String inputText) {
    if (inputText == null) {
      return Collections.emptyList();
    }

    Matcher m = MAIL_ADDRESS_PATTERN.matcher(inputText);
    List<String> addresses = new ArrayList<String>();

    while (m.find()) {
      addresses.add(m.group().trim());
    }

    return addresses;
  }
}

Java Source Code List

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