Caldavsync Sources: src/net/fortuna/ical4j/model/UtcOffset.java@fb9019fb1bf7 (annotated)

src/net/fortuna/ical4j/model/UtcOffset.java@fb9019fb1bf7 (annotated)

src/net/fortuna/ical4j/model/UtcOffset.java

Tue, 10 Feb 2015 18:12:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 10 Feb 2015 18:12:00 +0100
changeset 0: fb9019fb1bf7
child 4: 45d57ecba757
permissions: -rw-r--r--

Import initial revisions of existing project AndroidCaldavSyncAdapater,
forked from upstream repository at 27e8a0f8495c92e0780d450bdf0c7cec77a03a55.

 /**
  * 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 java.io.IOException;
 import java.io.Serializable;
 import java.text.DecimalFormat;
 import java.text.NumberFormat;
 import net.fortuna.ical4j.util.Dates;
 import org.apache.commons.lang.builder.HashCodeBuilder;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 /**
  * $Id$
  *
  * Created on 26/06/2005
  *
  * Represents a timezone offset from UTC time.
  *
  * @author Ben Fortuna
  */
 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;
         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 StringBuffer b = new StringBuffer();
         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();
     }
 }

Caldavsync Sources / annotate

src/net/fortuna/ical4j/model/UtcOffset.java@fb9019fb1bf7 (annotated)

src/net/fortuna/ical4j/model/UtcOffset.java