Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    /**
     * Pattern used for matching the XsDateTime formatted timestamp strings
     */
    protected static final Pattern xsDtPattern = Pattern
            .compile("(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2})(\\.(\\d{3}))?(.+)?");
    /**
     * Calendar instance used for calculating dates for timestamps
     */
    protected static GregorianCalendar cal = new GregorianCalendar();

    /**
     * Expects an XML xs:dateTime lexical format string, as in
     * <code>2005-10-24T11:57:31.000+01:00</code>. Some bad MXML files miss
     * timezone or milliseconds information, thus a certain amount of tolerance
     * is applied towards malformed timestamp string representations. If
     * unparseable, this method will return <code>null</code>.
     * 
     * @param xmlLexicalString
     * @return
     */
    public static Date parseXsDateTime(String xsDateTime) {
        // match pattern against timestamp string
        Matcher matcher = xsDtPattern.matcher(xsDateTime);
        if (matcher.matches() == true) {
            // extract data particles from matched groups / subsequences
            int year = Integer.parseInt(matcher.group(1));
            int month = Integer.parseInt(matcher.group(2)) - 1;
            int day = Integer.parseInt(matcher.group(3));
            int hour = Integer.parseInt(matcher.group(4));
            int minute = Integer.parseInt(matcher.group(5));
            int second = Integer.parseInt(matcher.group(6));
            int millis = 0;
            // probe for successful parsing of milliseconds
            if (matcher.group(7) != null) {
                millis = Integer.parseInt(matcher.group(8));
            }
            cal.set(year, month, day, hour, minute, second);
            cal.set(GregorianCalendar.MILLISECOND, millis);
            String tzString = matcher.group(9);
            if (tzString != null) {
                // timezone matched
                tzString = "GMT" + tzString.replace(":", "");
                cal.setTimeZone(TimeZone.getTimeZone(tzString));
            } else {
                cal.setTimeZone(TimeZone.getTimeZone("GMT"));
            }
            return cal.getTime();
        } else {
            return null;
        }
    }
}