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This API determines the holidays for a given year, country/name and eventually state/region. The holiday data is stored in XML files (one for each country) and will be read from the classpath. You can provide your own holiday calendar XML file or use any of the provided ones. Currently there are 63 countries supported like the following: United States, most european countries, Russia, India, Australia. Besides those there will be more special calendars like currently existing NYSE calendar (New York Stock Exchange).

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/**
 * Copyright 2010 Sven Diedrichsen 
 * 
 * Licensed 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 de.jollyday.parser.impl;

import java.time.LocalDate;
import java.util.Set;

import de.jollyday.Holiday;
import de.jollyday.HolidayType;
import de.jollyday.config.Holidays;
import de.jollyday.config.IslamicHoliday;
import de.jollyday.parser.AbstractHolidayParser;

/**
 * This parser calculates gregorian dates for the different islamic holidays.
 * 
 * @author Sven Diedrichsen
 * @version $Id: $
 */
public class IslamicHolidayParser extends AbstractHolidayParser {

	/**
	 * Properties prefix for islamic holidays.
	 */
	private static final String PREFIX_PROPERTY_ISLAMIC = "islamic.";

	/*
	 * (non-Javadoc)
	 * 
	 * @see de.jollyday.parser.HolidayParser#parse(int, java.util.Set,
	 * de.jollyday.config.Holidays)
	 */
	/** {@inheritDoc} */
	@Override
	public void parse(int year, Set holidays, final Holidays config) {
		for (IslamicHoliday i : config.getIslamicHoliday()) {
			if (!isValid(i, year)) {
				continue;
			}
			Set islamicHolidays = null;
			switch (i.getType()) {
			case NEWYEAR:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 1, 1);
				break;
			case ASCHURA:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 1, 10);
				break;
			case ID_AL_FITR:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 10, 1);
				break;
			case ID_UL_ADHA:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 12, 10);
				break;
			case LAILAT_AL_BARAT:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 8, 15);
				break;
			case LAILAT_AL_MIRAJ:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 7, 27);
				break;
			case LAILAT_AL_QADR:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 9, 27);
				break;
			case MAWLID_AN_NABI:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 3, 12);
				break;
			case RAMADAN:
				islamicHolidays = calendarUtil.getIslamicHolidaysInGregorianYear(year, 9, 1);
				break;
			default:
				throw new IllegalArgumentException("Unknown islamic holiday " + i.getType());
			}
			String propertiesKey = PREFIX_PROPERTY_ISLAMIC + i.getType().name();
			HolidayType type = xmlUtil.getType(i.getLocalizedType());
			for (LocalDate d : islamicHolidays) {
				holidays.add(new Holiday(d, propertiesKey, type));
			}
		}
	}

}