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Diffstat (limited to 'src/mscorlib/src/System/Globalization/HijriCalendar.cs')
| -rw-r--r-- | src/mscorlib/src/System/Globalization/HijriCalendar.cs | 716 |
1 files changed, 0 insertions, 716 deletions
diff --git a/src/mscorlib/src/System/Globalization/HijriCalendar.cs b/src/mscorlib/src/System/Globalization/HijriCalendar.cs deleted file mode 100644 index 061d380285..0000000000 --- a/src/mscorlib/src/System/Globalization/HijriCalendar.cs +++ /dev/null @@ -1,716 +0,0 @@ -// Licensed to the .NET Foundation under one or more agreements. -// The .NET Foundation licenses this file to you under the MIT license. -// See the LICENSE file in the project root for more information. - -namespace System.Globalization { - - using System; - using System.Runtime.Versioning; - using System.Diagnostics.Contracts; -#if !FEATURE_WIN32_REGISTRY - using System.Text; - using Microsoft.Win32; -#endif // FEATURE_WIN32_REGISTRY - - //////////////////////////////////////////////////////////////////////////// - // - // Rules for the Hijri calendar: - // - The Hijri calendar is a strictly Lunar calendar. - // - Days begin at sunset. - // - Islamic Year 1 (Muharram 1, 1 A.H.) is equivalent to absolute date - // 227015 (Friday, July 16, 622 C.E. - Julian). - // - Leap Years occur in the 2, 5, 7, 10, 13, 16, 18, 21, 24, 26, & 29th - // years of a 30-year cycle. Year = leap iff ((11y+14) mod 30 < 11). - // - There are 12 months which contain alternately 30 and 29 days. - // - The 12th month, Dhu al-Hijjah, contains 30 days instead of 29 days - // in a leap year. - // - Common years have 354 days. Leap years have 355 days. - // - There are 10,631 days in a 30-year cycle. - // - The Islamic months are: - // 1. Muharram (30 days) 7. Rajab (30 days) - // 2. Safar (29 days) 8. Sha'ban (29 days) - // 3. Rabi I (30 days) 9. Ramadan (30 days) - // 4. Rabi II (29 days) 10. Shawwal (29 days) - // 5. Jumada I (30 days) 11. Dhu al-Qada (30 days) - // 6. Jumada II (29 days) 12. Dhu al-Hijjah (29 days) {30} - // - // NOTENOTE - // The calculation of the HijriCalendar is based on the absolute date. And the - // absolute date means the number of days from January 1st, 1 A.D. - // Therefore, we do not support the days before the January 1st, 1 A.D. - // - //////////////////////////////////////////////////////////////////////////// - /* - ** Calendar support range: - ** Calendar Minimum Maximum - ** ========== ========== ========== - ** Gregorian 0622/07/18 9999/12/31 - ** Hijri 0001/01/01 9666/04/03 - */ - - [Serializable] - public class HijriCalendar : Calendar { - - - public static readonly int HijriEra = 1; - - internal const int DatePartYear = 0; - internal const int DatePartDayOfYear = 1; - internal const int DatePartMonth = 2; - internal const int DatePartDay = 3; - - internal const int MinAdvancedHijri = -2; - internal const int MaxAdvancedHijri = 2; - - internal static readonly int[] HijriMonthDays = {0,30,59,89,118,148,177,207,236,266,295,325,355}; - - //internal static Calendar m_defaultInstance; - -#if FEATURE_WIN32_REGISTRY - private const String InternationalRegKey = "Control Panel\\International"; - private const String HijriAdvanceRegKeyEntry = "AddHijriDate"; -#endif - - private int m_HijriAdvance = Int32.MinValue; - - // DateTime.MaxValue = Hijri calendar (year:9666, month: 4, day: 3). - internal const int MaxCalendarYear = 9666; - internal const int MaxCalendarMonth = 4; - internal const int MaxCalendarDay = 3; - // Hijri calendar (year: 1, month: 1, day:1 ) = Gregorian (year: 622, month: 7, day: 18) - // This is the minimal Gregorian date that we support in the HijriCalendar. - internal static readonly DateTime calendarMinValue = new DateTime(622, 7, 18); - internal static readonly DateTime calendarMaxValue = DateTime.MaxValue; - - - public override DateTime MinSupportedDateTime - { - get - { - return (calendarMinValue); - } - } - - - public override DateTime MaxSupportedDateTime - { - get - { - return (calendarMaxValue); - } - } - - // Return the type of the Hijri calendar. - // - - public override CalendarAlgorithmType AlgorithmType - { - get - { - return CalendarAlgorithmType.LunarCalendar; - } - } - - /*=================================GetDefaultInstance========================== - **Action: Internal method to provide a default intance of HijriCalendar. Used by NLS+ implementation - ** and other calendars. - **Returns: - **Arguments: - **Exceptions: - ============================================================================*/ - /* - internal static Calendar GetDefaultInstance() { - if (m_defaultInstance == null) { - m_defaultInstance = new HijriCalendar(); - } - return (m_defaultInstance); - } - */ - - // Construct an instance of Hijri calendar. - - public HijriCalendar() { - } - - internal override int ID { - get { - return (CAL_HIJRI); - } - } - - protected override int DaysInYearBeforeMinSupportedYear - { - get - { - // the year before the 1st year of the cycle would have been the 30th year - // of the previous cycle which is not a leap year. Common years have 354 days. - return 354; - } - } - - - - /*=================================GetAbsoluteDateHijri========================== - **Action: Gets the Absolute date for the given Hijri date. The absolute date means - ** the number of days from January 1st, 1 A.D. - **Returns: - **Arguments: - **Exceptions: - ============================================================================*/ - - long GetAbsoluteDateHijri(int y, int m, int d) { - return (long)(DaysUpToHijriYear(y) + HijriMonthDays[m-1] + d - 1 - HijriAdjustment); - } - - /*=================================DaysUpToHijriYear========================== - **Action: Gets the total number of days (absolute date) up to the given Hijri Year. - ** The absolute date means the number of days from January 1st, 1 A.D. - **Returns: Gets the total number of days (absolute date) up to the given Hijri Year. - **Arguments: HijriYear year value in Hijri calendar. - **Exceptions: None - **Notes: - ============================================================================*/ - - long DaysUpToHijriYear(int HijriYear) { - long NumDays; // number of absolute days - int NumYear30; // number of years up to current 30 year cycle - int NumYearsLeft; // number of years into 30 year cycle - - // - // Compute the number of years up to the current 30 year cycle. - // - NumYear30 = ((HijriYear - 1) / 30) * 30; - - // - // Compute the number of years left. This is the number of years - // into the 30 year cycle for the given year. - // - NumYearsLeft = HijriYear - NumYear30 - 1; - - // - // Compute the number of absolute days up to the given year. - // - NumDays = ((NumYear30 * 10631L) / 30L) + 227013L; - while (NumYearsLeft > 0) { - // Common year is 354 days, and leap year is 355 days. - NumDays += 354 + (IsLeapYear(NumYearsLeft, CurrentEra) ? 1: 0); - NumYearsLeft--; - } - - // - // Return the number of absolute days. - // - return (NumDays); - } - - - public int HijriAdjustment { - get { - if (m_HijriAdvance == Int32.MinValue) { - // Never been set before. Use the system value from registry. - m_HijriAdvance = GetAdvanceHijriDate(); - } - return (m_HijriAdvance); - } - - set { - // NOTE: Check the value of Min/MaxAdavncedHijri with Arabic speakers to see if the assumption is good. - if (value < MinAdvancedHijri || value > MaxAdvancedHijri) { - throw new ArgumentOutOfRangeException( - nameof(HijriAdjustment), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Bounds_Lower_Upper"), - MinAdvancedHijri, - MaxAdvancedHijri)); - } - Contract.EndContractBlock(); - VerifyWritable(); - - m_HijriAdvance = value; - } - } - - /*=================================GetAdvanceHijriDate========================== - **Action: Gets the AddHijriDate value from the registry. - **Returns: - **Arguments: None. - **Exceptions: - **Note: - ** The HijriCalendar has a user-overidable calculation. That is, use can set a value from the control - ** panel, so that the calculation of the Hijri Calendar can move ahead or backwards from -2 to +2 days. - ** - ** The valid string values in the registry are: - ** "AddHijriDate-2" => Add -2 days to the current calculated Hijri date. - ** "AddHijriDate" => Add -1 day to the current calculated Hijri date. - ** "" => Add 0 day to the current calculated Hijri date. - ** "AddHijriDate+1" => Add +1 days to the current calculated Hijri date. - ** "AddHijriDate+2" => Add +2 days to the current calculated Hijri date. - ============================================================================*/ - static int GetAdvanceHijriDate() { -#if FEATURE_WIN32_REGISTRY - - int hijriAdvance = 0; - Microsoft.Win32.RegistryKey key = null; - - try { - // Open in read-only mode. - // Use InternalOpenSubKey so that we avoid the security check. - key = Microsoft.Win32.Registry.CurrentUser.InternalOpenSubKey(InternationalRegKey, false); - } - //If this fails for any reason, we'll just return 0. - catch (ObjectDisposedException) { return 0; } - catch (ArgumentException) { return 0; } - - if (key != null) { - try { - Object value = key.InternalGetValue(HijriAdvanceRegKeyEntry, null, false, false); - if (value == null) { - return (0); - } - String str = value.ToString(); - if (String.Compare(str, 0, HijriAdvanceRegKeyEntry, 0, HijriAdvanceRegKeyEntry.Length, StringComparison.OrdinalIgnoreCase) == 0) { - if (str.Length == HijriAdvanceRegKeyEntry.Length) - hijriAdvance = -1; - else { - str = str.Substring(HijriAdvanceRegKeyEntry.Length); - try { - int advance = Int32.Parse(str.ToString(), CultureInfo.InvariantCulture); - if ((advance >= MinAdvancedHijri) && (advance <= MaxAdvancedHijri)) { - hijriAdvance = advance; - } - } - // If we got garbage from registry just ignore it. - // hijriAdvance = 0 because of declaraction assignment up above. - catch (ArgumentException) { } - catch (FormatException) { } - catch (OverflowException) { } - } - } - } - finally { - key.Close(); - } - - } - return (hijriAdvance); - -#else //FEATURE_WIN32_REGISTRY - return 0; -#endif // FEATURE_WIN32_REGISTRY - } - - static internal void CheckTicksRange(long ticks) { - if (ticks < calendarMinValue.Ticks || ticks > calendarMaxValue.Ticks) { - throw new ArgumentOutOfRangeException( - "time", - String.Format( - CultureInfo.InvariantCulture, - Environment.GetResourceString("ArgumentOutOfRange_CalendarRange"), - calendarMinValue, - calendarMaxValue)); - } - } - - static internal void CheckEraRange(int era) { - if (era != CurrentEra && era != HijriEra) { - throw new ArgumentOutOfRangeException(nameof(era), Environment.GetResourceString("ArgumentOutOfRange_InvalidEraValue")); - } - } - - static internal void CheckYearRange(int year, int era) { - CheckEraRange(era); - if (year < 1 || year > MaxCalendarYear) { - throw new ArgumentOutOfRangeException( - nameof(year), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Range"), - 1, - MaxCalendarYear)); - } - } - - static internal void CheckYearMonthRange(int year, int month, int era) { - CheckYearRange(year, era); - if (year == MaxCalendarYear) { - if (month > MaxCalendarMonth) { - throw new ArgumentOutOfRangeException( - nameof(month), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Range"), - 1, - MaxCalendarMonth)); - } - } - - if (month < 1 || month > 12) { - throw new ArgumentOutOfRangeException(nameof(month), Environment.GetResourceString("ArgumentOutOfRange_Month")); - } - } - - /*=================================GetDatePart========================== - **Action: Returns a given date part of this <i>DateTime</i>. This method is used - ** to compute the year, day-of-year, month, or day part. - **Returns: - **Arguments: - **Exceptions: ArgumentException if part is incorrect. - **Notes: - ** First, we get the absolute date (the number of days from January 1st, 1 A.C) for the given ticks. - ** Use the formula (((AbsoluteDate - 227013) * 30) / 10631) + 1, we can a rough value for the Hijri year. - ** In order to get the exact Hijri year, we compare the exact absolute date for HijriYear and (HijriYear + 1). - ** From here, we can get the correct Hijri year. - ============================================================================*/ - - internal virtual int GetDatePart(long ticks, int part) { - int HijriYear; // Hijri year - int HijriMonth; // Hijri month - int HijriDay; // Hijri day - long NumDays; // The calculation buffer in number of days. - - CheckTicksRange(ticks); - - // - // Get the absolute date. The absolute date is the number of days from January 1st, 1 A.D. - // 1/1/0001 is absolute date 1. - // - NumDays = ticks / GregorianCalendar.TicksPerDay + 1; - - // - // See how much we need to backup or advance - // - NumDays += HijriAdjustment; - - // - // Calculate the appromixate Hijri Year from this magic formula. - // - HijriYear = (int)(((NumDays - 227013) * 30) / 10631) + 1; - - long daysToHijriYear = DaysUpToHijriYear(HijriYear); // The absoulte date for HijriYear - long daysOfHijriYear = GetDaysInYear(HijriYear, CurrentEra); // The number of days for (HijriYear+1) year. - - if (NumDays < daysToHijriYear) { - daysToHijriYear -= daysOfHijriYear; - HijriYear--; - } else if (NumDays == daysToHijriYear) { - HijriYear--; - daysToHijriYear -= GetDaysInYear(HijriYear, CurrentEra); - } else { - if (NumDays > daysToHijriYear + daysOfHijriYear) { - daysToHijriYear += daysOfHijriYear; - HijriYear++; - } - } - if (part == DatePartYear) { - return (HijriYear); - } - - // - // Calculate the Hijri Month. - // - - HijriMonth = 1; - NumDays -= daysToHijriYear; - - if (part == DatePartDayOfYear) { - return ((int)NumDays); - } - - while ((HijriMonth <= 12) && (NumDays > HijriMonthDays[HijriMonth - 1])) { - HijriMonth++; - } - HijriMonth--; - - if (part == DatePartMonth) { - return (HijriMonth); - } - - // - // Calculate the Hijri Day. - // - HijriDay = (int)(NumDays - HijriMonthDays[HijriMonth - 1]); - - if (part == DatePartDay) { - return (HijriDay); - } - // Incorrect part value. - throw new InvalidOperationException(Environment.GetResourceString("InvalidOperation_DateTimeParsing")); - } - - // Returns the DateTime resulting from adding the given number of - // months to the specified DateTime. The result is computed by incrementing - // (or decrementing) the year and month parts of the specified DateTime by - // value months, and, if required, adjusting the day part of the - // resulting date downwards to the last day of the resulting month in the - // resulting year. The time-of-day part of the result is the same as the - // time-of-day part of the specified DateTime. - // - // In more precise terms, considering the specified DateTime to be of the - // form y / m / d + t, where y is the - // year, m is the month, d is the day, and t is the - // time-of-day, the result is y1 / m1 / d1 + t, - // where y1 and m1 are computed by adding value months - // to y and m, and d1 is the largest value less than - // or equal to d that denotes a valid day in month m1 of year - // y1. - // - - public override DateTime AddMonths(DateTime time, int months) { - if (months < -120000 || months > 120000) { - throw new ArgumentOutOfRangeException( - nameof(months), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Range"), - -120000, - 120000)); - } - Contract.EndContractBlock(); - // Get the date in Hijri calendar. - int y = GetDatePart(time.Ticks, DatePartYear); - int m = GetDatePart(time.Ticks, DatePartMonth); - int d = GetDatePart(time.Ticks, DatePartDay); - int i = m - 1 + months; - if (i >= 0) { - m = i % 12 + 1; - y = y + i / 12; - } else { - m = 12 + (i + 1) % 12; - y = y + (i - 11) / 12; - } - int days = GetDaysInMonth(y, m); - if (d > days) { - d = days; - } - long ticks = GetAbsoluteDateHijri(y, m, d)* TicksPerDay + (time.Ticks % TicksPerDay); - Calendar.CheckAddResult(ticks, MinSupportedDateTime, MaxSupportedDateTime); - return (new DateTime(ticks)); - } - - // Returns the DateTime resulting from adding the given number of - // years to the specified DateTime. The result is computed by incrementing - // (or decrementing) the year part of the specified DateTime by value - // years. If the month and day of the specified DateTime is 2/29, and if the - // resulting year is not a leap year, the month and day of the resulting - // DateTime becomes 2/28. Otherwise, the month, day, and time-of-day - // parts of the result are the same as those of the specified DateTime. - // - - public override DateTime AddYears(DateTime time, int years) { - return (AddMonths(time, years * 12)); - } - - // Returns the day-of-month part of the specified DateTime. The returned - // value is an integer between 1 and 31. - // - - public override int GetDayOfMonth(DateTime time) { - return (GetDatePart(time.Ticks, DatePartDay)); - } - - // Returns the day-of-week part of the specified DateTime. The returned value - // is an integer between 0 and 6, where 0 indicates Sunday, 1 indicates - // Monday, 2 indicates Tuesday, 3 indicates Wednesday, 4 indicates - // Thursday, 5 indicates Friday, and 6 indicates Saturday. - // - - public override DayOfWeek GetDayOfWeek(DateTime time) { - return ((DayOfWeek)((int)(time.Ticks / TicksPerDay + 1) % 7)); - } - - // Returns the day-of-year part of the specified DateTime. The returned value - // is an integer between 1 and 366. - // - - public override int GetDayOfYear(DateTime time) { - return (GetDatePart(time.Ticks, DatePartDayOfYear)); - } - - // Returns the number of days in the month given by the year and - // month arguments. - // - [Pure] - public override int GetDaysInMonth(int year, int month, int era) { - CheckYearMonthRange(year, month, era); - if (month == 12) { - // For the 12th month, leap year has 30 days, and common year has 29 days. - return (IsLeapYear(year, CurrentEra) ? 30 : 29); - } - // Other months contain 30 and 29 days alternatively. The 1st month has 30 days. - return (((month % 2) == 1) ? 30 : 29); - } - - // Returns the number of days in the year given by the year argument for the current era. - // - - public override int GetDaysInYear(int year, int era) { - CheckYearRange(year, era); - // Common years have 354 days. Leap years have 355 days. - return (IsLeapYear(year, CurrentEra) ? 355: 354); - } - - // Returns the era for the specified DateTime value. - - public override int GetEra(DateTime time) { - CheckTicksRange(time.Ticks); - return (HijriEra); - } - - - public override int[] Eras { - get { - return (new int[] {HijriEra}); - } - } - - // Returns the month part of the specified DateTime. The returned value is an - // integer between 1 and 12. - // - - public override int GetMonth(DateTime time) { - return (GetDatePart(time.Ticks, DatePartMonth)); - } - - // Returns the number of months in the specified year and era. - - public override int GetMonthsInYear(int year, int era) { - CheckYearRange(year, era); - return (12); - } - - // Returns the year part of the specified DateTime. The returned value is an - // integer between 1 and MaxCalendarYear. - // - - public override int GetYear(DateTime time) { - return (GetDatePart(time.Ticks, DatePartYear)); - } - - // Checks whether a given day in the specified era is a leap day. This method returns true if - // the date is a leap day, or false if not. - // - - public override bool IsLeapDay(int year, int month, int day, int era) { - // The year/month/era value checking is done in GetDaysInMonth(). - int daysInMonth = GetDaysInMonth(year, month, era); - if (day < 1 || day > daysInMonth) { - throw new ArgumentOutOfRangeException( - nameof(day), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Day"), - daysInMonth, - month)); - } - return (IsLeapYear(year, era) && month == 12 && day == 30); - } - - // Returns the leap month in a calendar year of the specified era. This method returns 0 - // if this calendar does not have leap month, or this year is not a leap year. - // - - public override int GetLeapMonth(int year, int era) - { - CheckYearRange(year, era); - return (0); - } - - // Checks whether a given month in the specified era is a leap month. This method returns true if - // month is a leap month, or false if not. - // - - public override bool IsLeapMonth(int year, int month, int era) { - CheckYearMonthRange(year, month, era); - return (false); - } - - // Checks whether a given year in the specified era is a leap year. This method returns true if - // year is a leap year, or false if not. - // - - public override bool IsLeapYear(int year, int era) { - CheckYearRange(year, era); - return ((((year * 11) + 14) % 30) < 11); - } - - // Returns the date and time converted to a DateTime value. Throws an exception if the n-tuple is invalid. - // - - public override DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era) { - // The year/month/era checking is done in GetDaysInMonth(). - int daysInMonth = GetDaysInMonth(year, month, era); - if (day < 1 || day > daysInMonth) { - BCLDebug.Log("year = " + year + ", month = " + month + ", day = " + day); - throw new ArgumentOutOfRangeException( - nameof(day), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Day"), - daysInMonth, - month)); - } - - long lDate = GetAbsoluteDateHijri(year, month, day); - - if (lDate >= 0) { - return (new DateTime(lDate * GregorianCalendar.TicksPerDay + TimeToTicks(hour, minute, second, millisecond))); - } else { - throw new ArgumentOutOfRangeException(null, Environment.GetResourceString("ArgumentOutOfRange_BadYearMonthDay")); - } - } - - private const int DEFAULT_TWO_DIGIT_YEAR_MAX = 1451; - - - public override int TwoDigitYearMax { - get { - if (twoDigitYearMax == -1) { - twoDigitYearMax = GetSystemTwoDigitYearSetting(ID, DEFAULT_TWO_DIGIT_YEAR_MAX); - } - return (twoDigitYearMax); - } - - set { - VerifyWritable(); - if (value < 99 || value > MaxCalendarYear) - { - throw new ArgumentOutOfRangeException( - nameof(value), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Range"), - 99, - MaxCalendarYear)); - - } - twoDigitYearMax = value; - } - } - - - public override int ToFourDigitYear(int year) { - if (year < 0) { - throw new ArgumentOutOfRangeException(nameof(year), - Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); - } - Contract.EndContractBlock(); - - if (year < 100) { - return (base.ToFourDigitYear(year)); - } - - if (year > MaxCalendarYear) { - throw new ArgumentOutOfRangeException( - nameof(year), - String.Format( - CultureInfo.CurrentCulture, - Environment.GetResourceString("ArgumentOutOfRange_Range"), - 1, - MaxCalendarYear)); - } - return (year); - } - - } -} |