727 lines
22 KiB
C#
727 lines
22 KiB
C#
// System.Globalization.HebrewCalendar.cs
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//
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// (C) Ulrich Kunitz 2002
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//
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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namespace System.Globalization {
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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/// <summary>
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/// This is the Hebrew calendar.
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/// </summary>
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/// <remarks>
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/// <para>The Hebrew calendar supports only years between 5343 A.M. and
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/// 6000 A.M. This has been done to be compatible with .NET.
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/// </para>
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/// <para>The implementation uses the
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/// <see cref="N:CalendricalCalculations"/> namespace.
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/// </para>
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/// </remarks>
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[Serializable]
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[MonoLimitation ("Serialization format not compatible with.NET")]
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public class HebrewCalendar : Calendar {
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/// <summary>
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/// Constructor.
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/// </summary>
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public HebrewCalendar() {
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M_AbbrEraNames = new string[] {"A.M."};
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M_EraNames = new string[] {"Anno Mundi"};
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if (twoDigitYearMax == 99)
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twoDigitYearMax = 5790;
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}
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/// <summary>
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/// The era number for the Anno Mundi (A.M.) era, called
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/// plain HebrewEra.
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/// </summary>
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public static readonly int HebrewEra = 1;
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/// <summary>
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/// The
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/// <see cref="T:System.DateTime"/> ticks for first day of year
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/// 5343 A.M.
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/// </summary>
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internal const long M_MinTicks = 499147488000000000L;
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/// <summary>
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/// The number of
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/// <see cref="T:System.DateTime"/> ticks for the last day of year
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/// 6000 A.M.
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/// </summary>
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internal const long M_MaxTicks = 706783967999999999L;
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/// <summary>
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/// The minimum year in the A.M. era supported.
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/// </summary>
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internal const int M_MinYear = 5343;
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/// <summary>
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/// The maximum year supported in the A.M. era.
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/// </summary>
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internal override int M_MaxYear {
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get { return 6000; }
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}
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/// <value>Overridden. Gives the eras supported by the Gregorian
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/// calendar as an array of integers.
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/// </value>
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public override int[] Eras {
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get {
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return new int[] { HebrewEra };
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}
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}
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public override int TwoDigitYearMax
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{
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get {
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return twoDigitYearMax;
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}
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set {
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CheckReadOnly ();
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M_ArgumentInRange ("value", value, M_MinYear, M_MaxYear);
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twoDigitYearMax = value;
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}
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}
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/// <summary>
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/// A protected member checking a
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/// <see cref="T:System.DateTime"/> value.
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/// </summary>
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/// <param name="time">The
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/// <see cref="T:System.DateTime"/>
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/// to check.
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/// </param>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the
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/// <see cref="T:System.DateTime"/> parameter is not in the years
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/// between 5343 A.M. and 6000 A.M., inclusive.
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/// </exception>
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internal void M_CheckDateTime(DateTime time) {
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if (time.Ticks < M_MinTicks || time.Ticks > M_MaxTicks)
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throw new ArgumentOutOfRangeException(
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"time",
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"Only hebrew years between 5343 and 6000," +
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" inclusive, are supported.");
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}
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/// <summary>
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/// A protected method checking the era number.
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/// </summary>
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/// <param name="era">The era number.</param>
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/// <exception name="T:System.ArgumentException">
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/// The exception is thrown if the era is not equal
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/// <see cref="F:HebrewEra"/>.
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/// </exception>
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internal void M_CheckEra(ref int era) {
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if (era == CurrentEra)
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era = HebrewEra;
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if (era != HebrewEra)
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throw new ArgumentException("Era value was not valid.");
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}
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/// <summary>
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/// A protected method checking calendar year and the era number.
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/// </summary>
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/// <param name="year">An integer representing the calendar year.
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/// </param>
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/// <param name="era">The era number.</param>
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/// <exception cref="T:System.ArgumentException">
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/// The exception is thrown if the era is not equal
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/// <see cref="F:HebrewEra"/>.
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/// </exception>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the calendar year is outside of
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/// the allowed range.
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/// </exception>
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internal override void M_CheckYE(int year, ref int era) {
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M_CheckEra(ref era);
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if (year < M_MinYear || year > M_MaxYear)
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throw new ArgumentOutOfRangeException(
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"year",
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"Only hebrew years between 5343 and 6000," +
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" inclusive, are supported.");
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}
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/// <summary>
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/// A protected method checking the calendar year, month, and
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/// era number.
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/// </summary>
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/// <param name="year">An integer representing the calendar year.
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/// </param>
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/// <param name="month">An integer giving the calendar month.
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/// </param>
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/// <param name="era">The era number.</param>
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/// <exception cref="T:System.ArgumentException">
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/// The exception is thrown if the era is not equal
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/// <see cref="F:HebrewEra"/>.
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/// </exception>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the calendar year or month is
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/// outside of the allowed range.
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/// </exception>
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internal void M_CheckYME(int year, int month, ref int era) {
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M_CheckYE(year, ref era);
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int l = CCHebrewCalendar.last_month_of_year(year);
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if (month < 1 || month > l) {
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StringWriter sw = new StringWriter();
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sw.Write("Month must be between 1 and {0}.", l);
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throw new ArgumentOutOfRangeException("month",
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sw.ToString());
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}
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}
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/// <summary>
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/// A protected method checking the calendar day, month, and year
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/// and the era number.
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/// </summary>
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/// <param name="year">An integer representing the calendar year.
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/// </param>
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/// <param name="month">An integer giving the calendar month.
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/// </param>
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/// <param name="day">An integer giving the calendar day.
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/// </param>
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/// <param name="era">The era number.</param>
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/// <exception cref="T:System.ArgumentException">
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/// The exception is thrown if the era is not equal
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/// <see cref="F:HebrewEra"/>.
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/// </exception>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the calendar year, month, or day is
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/// outside of the allowed range.
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/// </exception>
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internal void M_CheckYMDE(int year, int month, int day,
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ref int era)
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{
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M_CheckYME(year, month, ref era);
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M_ArgumentInRange("day", day, 1, GetDaysInMonth(year, month,
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era));
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}
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/// <summary>
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/// Overrideden. Adds months to a given date.
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/// </summary>
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/// <param name="time">The
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/// <see cref="T:System.DateTime"/> to which to add
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/// months.
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/// </param>
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/// <param name="months">The number of months to add.</param>
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/// <returns>A new <see cref="T:System.DateTime"/> value, that
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/// results from adding <paramref name="months"/> to the specified
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/// DateTime.</returns>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the
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/// <see cref="T:System.DateTime"/> return value is not in the years
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/// between 5343 A.M. and 6000 A.M., inclusive.
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/// </exception>
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public override DateTime AddMonths(DateTime time, int months) {
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int y, m, d;
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DateTime t;
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if (months == 0) {
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t = time;
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} else {
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int rd = CCFixed.FromDateTime(time);
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CCHebrewCalendar.dmy_from_fixed(
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out d, out m, out y, rd);
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m = M_Month(m, y);
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if (months < 0) {
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while (months < 0) {
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if (m+months > 0) {
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m += months;
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months = 0;
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} else {
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months += m;
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y -= 1;
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m = GetMonthsInYear(y);
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}
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}
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}
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else {
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while (months > 0) {
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int my = GetMonthsInYear(y);
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if (m+months <= my) {
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m += months;
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months = 0;
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} else {
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months -= my-m+1;
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m = 1;
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y += 1;
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}
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}
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}
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t = ToDateTime(y, m, d, 0, 0, 0, 0);
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t = t.Add(time.TimeOfDay);
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}
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M_CheckDateTime(t);
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return t;
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}
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/// <summary>
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/// Overridden. Adds years to a given date.
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/// </summary>
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/// <param name="time">The
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/// <see cref="T:System.DateTime"/> to which to add
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/// years.
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/// </param>
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/// <param name="years">The number of years to add.</param>
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/// <returns>A new <see cref="T:System.DateTime"/> value, that
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/// results from adding <paramref name="years"/> to the specified
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/// DateTime.</returns>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the
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/// <see cref="T:System.DateTime"/> return value is not in the years
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/// between 5343 A.M. and 6000 A.M., inclusive.
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/// </exception>
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public override DateTime AddYears(DateTime time, int years) {
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int rd = CCFixed.FromDateTime(time);
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int day, month, year;
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CCHebrewCalendar.dmy_from_fixed(
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out day, out month, out year, rd);
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year += years;
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rd = CCHebrewCalendar.fixed_from_dmy(day, month, year);
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DateTime t = CCFixed.ToDateTime(rd);
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t = t.Add(time.TimeOfDay);
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M_CheckDateTime(t);
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return t;
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}
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/// <summary>
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/// Overriden. Gets the day of the month from
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/// <paramref name="time"/>.
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/// </summary>
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/// <param name="time">The
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/// <see cref="T:System.DateTime"/> that specifies a
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/// date.
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/// </param>
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/// <returns>An integer giving the day of months, starting with 1.
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/// </returns>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the
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/// <see cref="T:System.DateTime"/> parameter is not in the years
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/// between 5343 A.M. and 6000 A.M., inclusive.
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/// </exception>
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public override int GetDayOfMonth(DateTime time) {
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M_CheckDateTime(time);
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int rd = CCFixed.FromDateTime(time);
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return CCHebrewCalendar.day_from_fixed(rd);
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}
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/// <summary>
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/// Overriden. Gets the day of the week from the specified date.
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/// </summary>
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/// <param name="time">The
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/// <see cref="T:System.DateTime"/> that specifies a
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/// date.
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/// </param>
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/// <returns>An integer giving the day of months, starting with 1.
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/// </returns>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the
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/// <see cref="T:System.DateTime"/> parameter is not in the years
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/// between 5343 A.M. and 6000 A.M., inclusive.
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/// </exception>
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public override DayOfWeek GetDayOfWeek(DateTime time) {
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M_CheckDateTime(time);
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int rd = CCFixed.FromDateTime(time);
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return (DayOfWeek)CCFixed.day_of_week(rd);
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}
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/// <summary>
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/// Overridden. Gives the number of the day in the year.
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/// </summary>
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/// <param name="time">The
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/// <see cref="T:System.DateTime"/> that specifies a
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/// date.
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/// </param>
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/// <returns>An integer representing the day of the year,
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/// starting with 1.</returns>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the
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/// <see cref="T:System.DateTime"/> parameter is not in the years
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/// between 5343 A.M. and 6000 A.M., inclusive.
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/// </exception>
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public override int GetDayOfYear(DateTime time) {
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M_CheckDateTime(time);
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int rd = CCFixed.FromDateTime(time);
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int year = CCHebrewCalendar.year_from_fixed(rd);
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int rd1_7 = CCHebrewCalendar.fixed_from_dmy(1, 7, year);
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return rd - rd1_7 + 1;
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}
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/// <summary>
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/// The method maps a .NET Hebrew month to a Calencdrical
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/// Calculations Hebrew month.
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/// </summary>
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/// <param name="month">An integer representing a month in .NET
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/// counting (starting with Tishri).
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/// </param>
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/// <param name="year">An integer representing the Hebrew year.
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/// </param>
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/// <returns>The Hebrew month in Calendrical Calculations counting,
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/// staring with the Hebrew month Nisan.
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/// </returns>
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/// <remarks>
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/// <para>
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/// In .NET the month counting starts with the Hebrew month Tishri.
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/// Calendrical Calculations starts with the month Nisan. So we must
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/// map here.
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/// </para>
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/// </remarks>
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internal int M_CCMonth(int month, int year) {
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if (month <= 6) {
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return 6+month;
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}
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else {
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int l = CCHebrewCalendar.last_month_of_year(year);
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if (l == 12) {
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return month-6;
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}
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else {
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return month <= 7 ? 6+month : month-7;
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}
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}
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}
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/// <summary>
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/// The method maps a Calendrical Calculations Hebrew month
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/// to a .NET Hebrew month.
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/// </summary>
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/// <param name="ccmonth">An integer representing a month in
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/// Calendrical Calculations counting, starting with Nisan.
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/// </param>
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/// <param name="year">An integer representing the Hebrew year.
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/// </param>
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/// <returns>The Hebrew month in .NET counting,
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/// staring with the Hebrew month Tishri.
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/// </returns>
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/// <remarks>
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/// <para>
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/// In .NET the month counting starts with the Hebrew month Tishri.
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/// Calendrical Calculations starts with the month Tisan. So we must
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/// map here.
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/// </para>
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/// </remarks>
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internal int M_Month(int ccmonth, int year) {
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if (ccmonth >= 7) {
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return ccmonth - 6;
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} else {
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int l = CCHebrewCalendar.last_month_of_year(year);
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return ccmonth + (l == 12 ? 6 : 7);
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}
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}
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/// <summary>
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/// Overridden. Gives the number of days in the specified month
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/// of the given year and era.
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/// </summary>
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/// <param name="year">An integer that gives the year.
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/// </param>
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/// <param name="month">An integer that gives the month, starting
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/// with 1.</param>
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/// <param name="era">An integer that gives the era of the specified
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/// year.</param>
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/// <returns>An integer that gives the number of days of the
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/// specified month.</returns>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown, if <paramref name="month"/>,
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/// <paramref name="year"/> ,or <paramref name="era"/> is outside
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/// the allowed range.
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/// </exception>
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public override int GetDaysInMonth(int year, int month, int era) {
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M_CheckYME(year, month, ref era);
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int ccmonth = M_CCMonth(month, year);
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return CCHebrewCalendar.last_day_of_month(ccmonth, year);
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}
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/// <summary>
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/// Overridden. Gives the number of days of the specified
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/// year of the given era.
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/// </summary>
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/// <param name="year">An integer that specifies the year.
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/// </param>
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/// <param name="era">An ineger that specifies the era.
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/// </param>
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/// <returns>An integer that gives the number of days of the
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/// specified year.</returns>
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/// <exception cref="T:System.ArgumentOutOfRangeExceiption">
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/// The exception is thrown, if
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/// <paramref name="year"/> or <paramref name="era"/> are outside the
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/// allowed range.
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/// </exception>
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public override int GetDaysInYear(int year, int era) {
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M_CheckYE(year, ref era);
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int rd1 = CCHebrewCalendar.fixed_from_dmy(1, 7, year);
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int rd2 = CCHebrewCalendar.fixed_from_dmy(1, 7, year+1);
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return rd2 - rd1;
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}
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/// <summary>
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/// Overridden. Gives the era of the specified date.
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/// </summary>
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/// <param name="time">The
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/// <see cref="T:System.DateTime"/> that specifies a
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/// date.
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/// </param>
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/// <returns>An integer representing the era of the calendar.
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/// </returns>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// The exception is thrown if the
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/// <see cref="T:System.DateTime"/> parameter is not in the years
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/// between 5343 A.M. and 6000 A.M., inclusive.
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/// </exception>
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public override int GetEra(DateTime time) {
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M_CheckDateTime(time);
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return HebrewEra;
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}
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public override int GetLeapMonth (int year, int era)
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{
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return IsLeapMonth (year, 7, era) ? 7 : 0;
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}
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/// <summary>
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/// Overridden. Gives the number of the month of the specified
|
|
/// date.
|
|
/// </summary>
|
|
/// <param name="time">The
|
|
/// <see cref="T:System.DateTime"/> that specifies a
|
|
/// date.
|
|
/// </param>
|
|
/// <returns>An integer representing the month,
|
|
/// starting with 1.</returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The exception is thrown if the
|
|
/// <see cref="T:System.DateTime"/> parameter is not in the years
|
|
/// between 5343 A.M. and 6000 A.M., inclusive.
|
|
/// </exception>
|
|
public override int GetMonth(DateTime time) {
|
|
M_CheckDateTime(time);
|
|
int rd = CCFixed.FromDateTime(time);
|
|
int ccmonth, year;
|
|
CCHebrewCalendar.my_from_fixed(out ccmonth, out year, rd);
|
|
return M_Month(ccmonth, year);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Overridden. Gives the number of months in the specified year
|
|
/// and era.
|
|
/// </summary>
|
|
/// <param name="year">An integer that specifies the year.
|
|
/// </param>
|
|
/// <param name="era">An integer that specifies the era.
|
|
/// </param>
|
|
/// <returns>An integer that gives the number of the months in the
|
|
/// specified year.</returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The exception is thrown, if the year or the era are not valid.
|
|
/// </exception>
|
|
public override int GetMonthsInYear(int year, int era) {
|
|
M_CheckYE(year, ref era);
|
|
return CCHebrewCalendar.last_month_of_year(year);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Overridden. Gives the number of the year of the specified
|
|
/// date.
|
|
/// </summary>
|
|
/// <param name="time">The
|
|
/// <see cref="T:System.DateTime"/> that specifies a
|
|
/// date.
|
|
/// </param>
|
|
/// <returns>An integer representing the year,
|
|
/// starting with 1.</returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The exception is thrown if the
|
|
/// <see cref="T:System.DateTime"/> parameter is not in the years
|
|
/// between 5343 A.M. and 6000 A.M., inclusive.
|
|
/// </exception>
|
|
public override int GetYear(DateTime time) {
|
|
M_CheckDateTime(time);
|
|
int rd = CCFixed.FromDateTime(time);
|
|
return CCHebrewCalendar.year_from_fixed(rd);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Overridden. Tells whether the given day
|
|
/// is a leap day.
|
|
/// </summary>
|
|
/// <param name="year">An integer that specifies the year in the
|
|
/// given era.
|
|
/// </param>
|
|
/// <param name="month">An integer that specifies the month.
|
|
/// </param>
|
|
/// <param name="day">An integer that specifies the day.
|
|
/// </param>
|
|
/// <param name="era">An integer that specifies the era.
|
|
/// </param>
|
|
/// <returns>A boolean that tells whether the given day is a leap
|
|
/// day.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The exception is thrown, if the year, month, day, or era is not
|
|
/// valid.
|
|
/// </exception>
|
|
/// <remarks>All days in Adar II are viewed as leap days and the
|
|
/// last day of Adar I.
|
|
/// </remarks>
|
|
public override bool IsLeapDay(int year, int month, int day, int era)
|
|
{
|
|
M_CheckYMDE(year, month, day, ref era);
|
|
return IsLeapYear(year) &&
|
|
(month == 7 || (month == 6 && day == 30));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Overridden. Tells whether the given month
|
|
/// is a leap month.
|
|
/// </summary>
|
|
/// <param name="year">An integer that specifies the year in the
|
|
/// given era.
|
|
/// </param>
|
|
/// <param name="month">An integer that specifies the month.
|
|
/// </param>
|
|
/// <param name="era">An integer that specifies the era.
|
|
/// </param>
|
|
/// <returns>A boolean that tells whether the given month is a leap
|
|
/// month.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The exception is thrown, if the year, month, or era is not
|
|
/// valid.
|
|
/// </exception>
|
|
/// <remarks>
|
|
/// Adar II is viewed as leap month.
|
|
/// </remarks>
|
|
public override bool IsLeapMonth(int year, int month, int era) {
|
|
M_CheckYME(year, month, ref era);
|
|
return IsLeapYear(year) && month == 7;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Overridden. Tells whether the given year
|
|
/// is a leap year.
|
|
/// </summary>
|
|
/// <param name="year">An integer that specifies the year in the
|
|
/// given era.
|
|
/// </param>
|
|
/// <param name="era">An integer that specifies the era.
|
|
/// </param>
|
|
/// <returns>A boolean that tells whether the given year is a leap
|
|
/// year.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The exception is thrown, if the year or era is not
|
|
/// valid.
|
|
/// </exception>
|
|
public override bool IsLeapYear(int year, int era) {
|
|
M_CheckYE(year, ref era);
|
|
return CCHebrewCalendar.is_leap_year(year);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Overridden. Creates the
|
|
/// <see cref="T:System.DateTime"/> from the parameters.
|
|
/// </summary>
|
|
/// <param name="year">An integer that gives the year in the
|
|
/// <paramref name="era"/>.
|
|
/// </param>
|
|
/// <param name="month">An integer that specifies the month.
|
|
/// </param>
|
|
/// <param name="day">An integer that specifies the day.
|
|
/// </param>
|
|
/// <param name="hour">An integer that specifies the hour.
|
|
/// </param>
|
|
/// <param name="minute">An integer that specifies the minute.
|
|
/// </param>
|
|
/// <param name="second">An integer that gives the second.
|
|
/// </param>
|
|
/// <param name="milliseconds">An integer that gives the
|
|
/// milliseconds.
|
|
/// </param>
|
|
/// <param name="era">An integer that specifies the era.
|
|
/// </param>
|
|
/// <returns>A
|
|
/// <see cref="T:system.DateTime"/> representig the date and time.
|
|
/// </returns>
|
|
/// <exception cref="T:System.ArgumentOutOfRangeException">
|
|
/// The exception is thrown, if at least one of the parameters
|
|
/// is out of range.
|
|
/// </exception>
|
|
public override DateTime ToDateTime(int year, int month, int day,
|
|
int hour, int minute, int second, int millisecond,
|
|
int era)
|
|
{
|
|
M_CheckYMDE(year, month, day, ref era);
|
|
M_CheckHMSM(hour, minute, second, millisecond);
|
|
int ccm = M_CCMonth(month, year);
|
|
int rd = CCHebrewCalendar.fixed_from_dmy(day, ccm, year);
|
|
return CCFixed.ToDateTime(rd,
|
|
hour, minute, second, millisecond);
|
|
}
|
|
|
|
public override int ToFourDigitYear (int year)
|
|
{
|
|
M_ArgumentInRange ("year", year, 0, M_MaxYear - 1);
|
|
|
|
int baseExtra = this.twoDigitYearMax % 100;
|
|
int baseCentury = this.twoDigitYearMax - baseExtra;
|
|
|
|
if (year >= 100)
|
|
return year;
|
|
if (year <= baseExtra)
|
|
return baseCentury + year;
|
|
else
|
|
return baseCentury + year - 100;
|
|
}
|
|
#if !NET_2_1
|
|
public override CalendarAlgorithmType AlgorithmType {
|
|
get {
|
|
return CalendarAlgorithmType.LunisolarCalendar;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static DateTime Min = new DateTime (1583, 1, 1, 0, 0, 0);
|
|
static DateTime Max = new DateTime (2239, 9, 29, 11, 59, 59);
|
|
|
|
public override DateTime MinSupportedDateTime {
|
|
get {
|
|
return Min;
|
|
}
|
|
}
|
|
|
|
public override DateTime MaxSupportedDateTime {
|
|
get {
|
|
return Max;
|
|
}
|
|
}
|
|
} // class HebrewCalendar
|
|
|
|
} // namespace System.Globalization
|