001 package biweekly.property.marshaller;
002
003 import java.util.List;
004
005 import biweekly.io.CannotParseException;
006 import biweekly.io.xml.XCalElement;
007 import biweekly.parameter.ICalParameters;
008 import biweekly.parameter.Value;
009 import biweekly.property.UtcOffsetProperty;
010 import biweekly.util.ICalDateFormatter;
011
012 /*
013 Copyright (c) 2013, Michael Angstadt
014 All rights reserved.
015
016 Redistribution and use in source and binary forms, with or without
017 modification, are permitted provided that the following conditions are met:
018
019 1. Redistributions of source code must retain the above copyright notice, this
020 list of conditions and the following disclaimer.
021 2. Redistributions in binary form must reproduce the above copyright notice,
022 this list of conditions and the following disclaimer in the documentation
023 and/or other materials provided with the distribution.
024
025 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
026 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
027 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
028 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
029 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
030 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
031 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
032 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
033 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
034 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
035 */
036
037 /**
038 * Marshals properties that have UTC offset values.
039 * @author Michael Angstadt
040 */
041 public abstract class UtcOffsetPropertyMarshaller<T extends UtcOffsetProperty> extends ICalPropertyMarshaller<T> {
042 public UtcOffsetPropertyMarshaller(Class<T> clazz, String propertyName) {
043 super(clazz, propertyName);
044 }
045
046 @Override
047 protected String _writeText(T property) {
048 Integer hour = property.getHourOffset();
049 if (hour == null) {
050 hour = 0;
051 }
052
053 Integer minute = property.getMinuteOffset();
054 if (minute == null) {
055 minute = 0;
056 }
057
058 return ICalDateFormatter.formatTimeZone(hour, minute, false);
059 }
060
061 @Override
062 protected T _parseText(String value, ICalParameters parameters, List<String> warnings) {
063 value = unescape(value);
064 return parse(value);
065 }
066
067 @Override
068 protected void _writeXml(T property, XCalElement element) {
069 Integer hour = property.getHourOffset();
070 if (hour == null) {
071 hour = 0;
072 }
073
074 Integer minute = property.getMinuteOffset();
075 if (minute == null) {
076 minute = 0;
077 }
078
079 element.append(Value.UTC_OFFSET, ICalDateFormatter.formatTimeZone(hour, minute, true));
080 }
081
082 @Override
083 protected T _parseXml(XCalElement element, ICalParameters parameters, List<String> warnings) {
084 String value = element.first(Value.UTC_OFFSET);
085 return parse(value);
086 }
087
088 protected abstract T newInstance(Integer hourOffset, Integer minuteOffset);
089
090 private T parse(String value) {
091 if (value == null) {
092 return newInstance(null, null);
093 }
094
095 try {
096 int[] offset = ICalDateFormatter.parseTimeZone(value);
097 Integer hourOffset = offset[0];
098 Integer minuteOffset = offset[1];
099 return newInstance(hourOffset, minuteOffset);
100 } catch (IllegalArgumentException e) {
101 throw new CannotParseException("Could not parse offset string.");
102 }
103 }
104 }