/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.isis.core.metamodel.facets.value.datetimejodalocal;
import java.util.List;
import java.util.StringTokenizer;
import com.google.common.collect.Iterables;
import org.joda.time.LocalDateTime;
import org.joda.time.format.DateTimeFormatter;
import org.apache.isis.applib.profiles.Localization;
import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
import org.apache.isis.core.metamodel.facets.value.JodaFunctions;
public final class JodaLocalDateTimeUtil {
private JodaLocalDateTimeUtil(){}
static LocalDateTime parseDate(final String dateStr, final Localization localization, List<DateTimeFormatter> parseFormatters) {
Iterable<DateTimeFormatter> elements = Iterables.transform(parseFormatters, JodaFunctions.withLocale(localization));
return parseDateTime(dateStr, elements);
}
private static LocalDateTime parseDateTime(String dateStr, Iterable<DateTimeFormatter> formatters) {
for(DateTimeFormatter formatter: formatters) {
try {
return formatter.parseLocalDateTime(dateStr);
} catch (final IllegalArgumentException e) {
// continue to next
}
}
throw new TextEntryParseException("Not recognised as a date: " + dateStr);
}
// //////////////////////////////////////
static LocalDateTime relativeDateTime(final LocalDateTime contextDate, final String str, final boolean add) {
LocalDateTime relativeDate = contextDate;
if (str.equals("")) {
return contextDate;
}
try {
final StringTokenizer st = new StringTokenizer(str.substring(1), " ");
while (st.hasMoreTokens()) {
final String token = st.nextToken();
relativeDate = adjustDateTime(relativeDate, token, add);
}
return relativeDate;
} catch (final Exception e) {
return contextDate;
}
}
private static LocalDateTime adjustDateTime(final LocalDateTime contextDateTime, String str, final boolean add) {
int hours = 0;
int minutes = 0;
int days = 0;
int months = 0;
int years = 0;
if (str.endsWith("H")) {
str = str.substring(0, str.length() - 1);
hours = Integer.valueOf(str).intValue();
} else if (str.endsWith("M")) {
str = str.substring(0, str.length() - 1);
minutes = Integer.valueOf(str).intValue();
} else if (str.endsWith("w")) {
str = str.substring(0, str.length() - 1);
days = 7 * Integer.valueOf(str).intValue();
} else if (str.endsWith("y")) {
str = str.substring(0, str.length() - 1);
years = Integer.valueOf(str).intValue();
} else if (str.endsWith("m")) {
str = str.substring(0, str.length() - 1);
months = Integer.valueOf(str).intValue();
} else if (str.endsWith("d")) {
str = str.substring(0, str.length() - 1);
days = Integer.valueOf(str).intValue();
} else {
days = Integer.valueOf(str).intValue();
}
if (add) {
return add(contextDateTime, years, months, days, hours, minutes);
} else {
return add(contextDateTime, -years, -months, -days, -hours, -minutes);
}
}
private static LocalDateTime add(final LocalDateTime original, final int years, final int months, final int days, final int hours, final int minutes) {
return original.plusYears(years).plusMonths(months).plusDays(days).plusHours(hours).plusMinutes(minutes);
}
// //////////////////////////////////////
public static String titleString(final DateTimeFormatter formatter, final LocalDateTime date) {
return date == null ? "" : formatter.print(date);
}
}