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/*
* TeleStax, Open Source Cloud Communications Copyright 2012.
* and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.mobicents.protocols.ss7.map.primitives;
import java.nio.ByteBuffer;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
import org.mobicents.protocols.ss7.map.api.primitives.Time;
/**
*
* @author Lasith Waruna Perera
*
*/
public class TimeImpl extends OctetStringBase implements Time {
private static final long msbZero = 2085978496000L;
private static final long msbOne = -2208988800000L;
public TimeImpl() {
super(4, 4, "Time");
}
public TimeImpl(byte[] data) {
super(4, 4, "Time", data);
}
public TimeImpl(int year, int month, int day, int hour, int minute, int second) {
super(4, 4, "Time");
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.set(year, month - 1, day, hour, minute, second);
long ntpTime = getNtpTime(cal.getTimeInMillis());
this.data = new byte[4];
System.arraycopy(longToBytes(ntpTime), 4, this.data, 0, 4);
}
@Override
public byte[] getData() {
return data;
}
@Override
public int getYear() {
long time = bytesToLong(this.data);
time = getTime(time);
Date d = new Date(time);
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(d);
return cal.get(Calendar.YEAR);
}
@Override
public int getMonth() {
long time = bytesToLong(this.data);
time = getTime(time);
Date d = new Date(time);
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(d);
return cal.get(Calendar.MONTH) + 1;
}
@Override
public int getDay() {
long time = bytesToLong(this.data);
time = getTime(time);
Date d = new Date(time);
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(d);
return cal.get(Calendar.DATE);
}
@Override
public int getHour() {
long time = bytesToLong(this.data);
time = getTime(time);
Date d = new Date(time);
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(d);
return cal.get(Calendar.HOUR_OF_DAY);
}
@Override
public int getMinute() {
long time = bytesToLong(this.data);
time = getTime(time);
Date d = new Date(time);
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(d);
return cal.get(Calendar.MINUTE);
}
@Override
public int getSecond() {
long time = bytesToLong(this.data);
time = getTime(time);
Date d = new Date(time);
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
cal.setTime(d);
return cal.get(Calendar.SECOND);
}
private long getNtpTime(long time) {
boolean isMSBSet = time < msbZero;
long timeWithMills;
if (isMSBSet) {
timeWithMills = time - msbOne;
} else {
timeWithMills = time - msbZero;
}
long seconds = timeWithMills / 1000;
if (isMSBSet) {
seconds |= 0x80000000L;
}
return seconds;
}
public long getTime(long ntpTime) {
long msb = ntpTime & 0x80000000L;
if (msb == 0) {
return msbZero + (ntpTime * 1000);
} else {
return msbOne + (ntpTime * 1000);
}
}
public byte[] longToBytes(long x) {
ByteBuffer buffer = ByteBuffer.allocate(8);
buffer.putLong(x);
return buffer.array();
}
public long bytesToLong(byte[] bytes) {
ByteBuffer buffer = ByteBuffer.allocate(8);
byte[] eightbytes = new byte[8];
System.arraycopy(bytes, 0, eightbytes, 4, 4);
buffer.put(eightbytes);
buffer.flip();
return buffer.getLong();
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(_PrimitiveName);
sb.append(" [");
if (data != null) {
sb.append("year=");
sb.append(this.getYear());
sb.append(", month=");
sb.append(this.getMonth());
sb.append(", day=");
sb.append(this.getDay());
sb.append(", hour=");
sb.append(this.getHour());
sb.append(", minite=");
sb.append(this.getMinute());
sb.append(", second=");
sb.append(this.getSecond());
}
sb.append("]");
return sb.toString();
}
}
