Source for file MonthNameDayYearStringParser.class.php

<?php
/**
 * @since 5/23/05
 * @package harmoni.primitives.chronology.string_parsers
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: MonthNameDayYearStringParser.class.php,v 1.3 2006/11/30 22:02:04 adamfranco Exp $
 *
 * @link http://harmoni.sourceforge.net/
 * @author Adam Franco <adam AT adamfranco DOT com> <afranco AT middlebury DOT edu>
 */ 
 
require_once(dirname(__FILE__)."/StringParser.class.php");
//require_once(dirname(__FILE__)."/TwoDigitYearStringParser.class.php");
 
/**
 * This StringParser can handle dates that contain a textual month-name or
 * month-abbreviation followed by an integer day then an integer year.
 * Delimiters are ignored, but required between the day and year. Examples:
 *         - April 5, 1982
 *         - Apr 5 1982
 *        - Apr 5, '82
 * 
 * @since 5/23/05
 * @package harmoni.primitives.chronology.string_parsers
 * 
 * @copyright Copyright &copy; 2005, Middlebury College
 * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL)
 *
 * @version $Id: MonthNameDayYearStringParser.class.php,v 1.3 2006/11/30 22:02:04 adamfranco Exp $
 *
 * @link http://harmoni.sourceforge.net/
 * @author Adam Franco <adam AT adamfranco DOT com> <afranco AT middlebury DOT edu>
 */
class MonthNameDayYearStringParser 
    extends TwoDigitYearStringParser 
{
 
/*******************************************************
 * Instance Methods
 *********************************************************/
 
     
     /**
     * Return the regular expression used by this parser
     * 
     * @return string 
     * @access protected
     * @since 5/24/05
     */
    function getRegex () {
        return
"/
^
    ([a-zA-Z]+)        # MonthName
    
    [^0-9a-zA-Z]*    # Optional delimiters
    
    [^0-9a-zA-Z]+        # delimiters
    
    (                    # Day of the Month
        (?:  0?[1-9])
        |
        (?:  [1-2][0-9])
        |
        (?:  3[01])
    )
    
    (?: st|nd|rd|th)?    # apendum to date, i.e. 1st, 2nd, 10th
    
    [^0-9a-zA-Z]+        # delimiters
    
    ([0-9]{2,})            # Year
$
/x";
     }
    
    /**
     * Parse the input string and set our elements based on the contents of the
     * input string. Elements not found in the string will be null.
     * 
     * @return void 
     * @access private
     * @since 5/23/05
     */
    function parse () {
        preg_match($this->getRegex(), $this->input, $matches);
        
        // Matches:
        //     [0] => May 23, 2005
        //     [1] => May
        //     [2] => 23
        //     [3] => 2005
        
        $this->setYear($matches[3]);
        $this->setMonth($matches[1]);
        $this->setDay($matches[2]);
    }
}
 
?>