Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import android.text.TextUtils;

import java.math.BigDecimal;

import java.text.ParseException;

import java.util.Calendar;

import java.util.GregorianCalendar;

import java.util.TimeZone;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static final Pattern XS_DATE_TIME_PATTERN = Pattern.compile("(\\d\\d\\d\\d)\\-(\\d\\d)\\-(\\d\\d)[Tt]"
            + "(\\d\\d):(\\d\\d):(\\d\\d)(\\.(\\d+))?" + "([Zz]|((\\+|\\-)(\\d\\d):(\\d\\d)))?");

    /**
     * Parses an xs:dateTime attribute value, returning the parsed timestamp in milliseconds since
     * the epoch.
     *
     * @param value The attribute value to parse.
     * @return The parsed timestamp in milliseconds since the epoch.
     */
    public static long parseXsDateTime(String value) throws ParseException {
        Matcher matcher = XS_DATE_TIME_PATTERN.matcher(value);
        if (!matcher.matches()) {
            throw new ParseException("Invalid date/time format: " + value, 0);
        }

        int timezoneShift;
        if (matcher.group(9) == null) {
            // No time zone specified.
            timezoneShift = 0;
        } else if (matcher.group(9).equalsIgnoreCase("Z")) {
            timezoneShift = 0;
        } else {
            timezoneShift = ((Integer.parseInt(matcher.group(12)) * 60 + Integer.parseInt(matcher.group(13))));
            if (matcher.group(11).equals("-")) {
                timezoneShift *= -1;
            }
        }

        Calendar dateTime = new GregorianCalendar(TimeZone.getTimeZone("GMT"));

        dateTime.clear();
        // Note: The month value is 0-based, hence the -1 on group(2)
        dateTime.set(Integer.parseInt(matcher.group(1)), Integer.parseInt(matcher.group(2)) - 1,
                Integer.parseInt(matcher.group(3)), Integer.parseInt(matcher.group(4)),
                Integer.parseInt(matcher.group(5)), Integer.parseInt(matcher.group(6)));
        if (!TextUtils.isEmpty(matcher.group(8))) {
            final BigDecimal bd = new BigDecimal("0." + matcher.group(8));
            // we care only for milliseconds, so movePointRight(3)
            dateTime.set(Calendar.MILLISECOND, bd.movePointRight(3).intValue());
        }

        long time = dateTime.getTimeInMillis();
        if (timezoneShift != 0) {
            time -= timezoneShift * 60000;
        }

        return time;
    }
}