/
UtcOffset.java
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/
UtcOffset.java
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/**
* Copyright (c) 2012, Ben Fortuna
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* o Neither the name of Ben Fortuna nor the names of any other contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package net.fortuna.ical4j.model;
import net.fortuna.ical4j.util.Dates;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import java.io.Serializable;
import java.text.DecimalFormat;
import java.text.NumberFormat;
/**
* $Id$
*
* Created on 26/06/2005
*
* Represents a timezone offset from UTC time.
*
* @author Ben Fortuna
*/
@Deprecated
public class UtcOffset implements Serializable {
private static final long serialVersionUID = 5883111996721531728L;
private static final int HOUR_START_INDEX = 1;
private static final int HOUR_END_INDEX = 3;
private static final int MINUTE_START_INDEX = 3;
private static final int MINUTE_END_INDEX = 5;
private static final int SECOND_START_INDEX = 5;
private static final int SECOND_END_INDEX = 7;
private static final NumberFormat HOUR_FORMAT = new DecimalFormat("00");
private static final NumberFormat MINUTE_FORMAT = new DecimalFormat("00");
private static final NumberFormat SECOND_FORMAT = new DecimalFormat("00");
private long offset;
/**
* @param value a string representation of an offset
*/
public UtcOffset(final String value) {
if (value.length() < MINUTE_END_INDEX) {
throw new IllegalArgumentException("Invalid UTC offset [" + value
+ "] - must be of the form: (+/-)HHMM[SS]");
}
final boolean negative = value.charAt(0) == '-';
if (!negative && !(value.charAt(0) == '+')) {
throw new IllegalArgumentException("UTC offset value must be signed");
}
offset = 0;
offset += Integer.parseInt(value.substring(HOUR_START_INDEX,
HOUR_END_INDEX))
* Dates.MILLIS_PER_HOUR;
//cludge to handle Utcffset of vcard 3
if ( value.contains(":")){
offset += Integer.parseInt(value.substring(MINUTE_START_INDEX +1, MINUTE_END_INDEX +1))
* Dates.MILLIS_PER_MINUTE;
} else {
offset += Integer.parseInt(value.substring(MINUTE_START_INDEX, MINUTE_END_INDEX))
* Dates.MILLIS_PER_MINUTE;
}
// offset += Integer.parseInt(value.substring(MINUTE_START_INDEX,
// MINUTE_END_INDEX))
// * Dates.MILLIS_PER_MINUTE;
if (value.length() == SECOND_END_INDEX) {
offset += Integer.parseInt(value.substring(SECOND_START_INDEX,
SECOND_END_INDEX))
* Dates.MILLIS_PER_SECOND;
}
if (negative) {
offset = -offset;
}
}
/**
* @param offset an offset value in milliseconds
*/
public UtcOffset(final long offset) {
this.offset = (long) Math.floor(offset / (double) Dates.MILLIS_PER_SECOND) * Dates.MILLIS_PER_SECOND;
}
/**
* {@inheritDoc}
*/
public final String toString() {
final StringBuilder b = new StringBuilder();
long remainder = Math.abs(offset);
if (offset < 0) {
b.append('-');
}
else {
b.append('+');
}
b.append(HOUR_FORMAT.format(remainder / Dates.MILLIS_PER_HOUR));
remainder = remainder % Dates.MILLIS_PER_HOUR;
b.append(MINUTE_FORMAT.format(remainder / Dates.MILLIS_PER_MINUTE));
remainder = remainder % Dates.MILLIS_PER_MINUTE;
if (remainder > 0) {
b.append(SECOND_FORMAT.format(remainder / Dates.MILLIS_PER_SECOND));
}
return b.toString();
}
/**
* @return Returns the offset.
*/
public final long getOffset() {
return offset;
}
/**
* {@inheritDoc}
*/
public final boolean equals(final Object arg0) {
if (arg0 instanceof UtcOffset) {
return getOffset() == ((UtcOffset) arg0).getOffset();
}
return super.equals(arg0);
}
/**
* {@inheritDoc}
*/
public final int hashCode() {
return new HashCodeBuilder().append(getOffset()).toHashCode();
}
}