chromium/third_party/icu/source/i18n/indiancal.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
 *****************************************************************************
 * Copyright (C) 2003-2008, International Business Machines Corporation
 * and others. All Rights Reserved.
 *****************************************************************************
 *
 * File INDIANCAL.H
 *****************************************************************************
 */

#ifndef INDIANCAL_H
#define INDIANCAL_H

#include "unicode/utypes.h"

#if !UCONFIG_NO_FORMATTING

#include "unicode/calendar.h"

U_NAMESPACE_BEGIN

/**
 * Concrete class which provides the Indian calendar.
 * <P>
 * <code>IndianCalendar</code> is a subclass of <code>Calendar</code>
 * that numbers years since the beginning of SAKA ERA.  This is the civil calendar
 * which is accepted by government of India as Indian National Calendar.
 * The two calendars most widely used in India today are the Vikrama calendar
 * followed in North India and the Shalivahana or Saka calendar which is followed
 * in South India and Maharashtra.

 * A variant of the Shalivahana Calendar was reformed and standardized as the
 * Indian National calendar in 1957.
 * <p>
 * Some details of Indian National Calendar (to be implemented) :
 * The Months
 * Month          Length      Start date (Gregorian)
 * =================================================
 * 1 Chaitra      30/31          March 22*
 * 2 Vaisakha     31             April 21
 * 3 Jyaistha     31             May 22
 * 4 Asadha       31             June 22
 * 5 Sravana      31             July 23
 * 6 Bhadra       31             August 23
 * 7 Asvina       30             September 23
 * 8 Kartika      30             October 23
 * 9 Agrahayana   30             November 22
 * 10 Pausa       30             December 22
 * 11 Magha       30             January 21
 * 12 Phalguna    30             February 20

 * In leap years, Chaitra has 31 days and starts on March 21 instead.
 * The leap years of Gregorian calendar and Indian National Calendar are in synchornization.
 * So When its a leap year in Gregorian calendar then Chaitra has 31 days.
 *
 * The Years
 * Years are counted in the Saka Era, which starts its year 0 in 78AD (by gregorian calendar).
 * So for eg. 9th June 2006 by Gregorian Calendar, is same as 19th of Jyaistha in 1928 of Saka
 * era by Indian National Calendar.
 * <p>
 * The Indian Calendar has only one allowable era: <code>Saka Era</code>.  If the
 * calendar is not in lenient mode (see <code>setLenient</code>), dates before
 * 1/1/1 Saka Era are rejected with an <code>IllegalArgumentException</code>.
 * <p>
 * @internal
 */


class U_I18N_API IndianCalendar : public Calendar { … };

U_NAMESPACE_END

#endif
#endif