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+// 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.
+
+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.CompilerServices;
+using System.Diagnostics.Contracts;
+using System.Collections.Generic;
+
+namespace System.Globalization
+{
+ // List of calendar data
+ // Note the we cache overrides.
+ // Note that localized names (resource names) aren't available from here.
+ //
+ // NOTE: Calendars depend on the locale name that creates it. Only a few
+ // properties are available without locales using CalendarData.GetCalendar(CalendarData)
+
+ internal partial class CalendarData
+ {
+ // Max calendars
+ internal const int MAX_CALENDARS = 23;
+
+ // Identity
+ internal String sNativeName; // Calendar Name for the locale
+
+ // Formats
+ internal String[] saShortDates; // Short Data format, default first
+ internal String[] saYearMonths; // Year/Month Data format, default first
+ internal String[] saLongDates; // Long Data format, default first
+ internal String sMonthDay; // Month/Day format
+
+ // Calendar Parts Names
+ internal String[] saEraNames; // Names of Eras
+ internal String[] saAbbrevEraNames; // Abbreviated Era Names
+ internal String[] saAbbrevEnglishEraNames; // Abbreviated Era Names in English
+ internal String[] saDayNames; // Day Names, null to use locale data, starts on Sunday
+ internal String[] saAbbrevDayNames; // Abbrev Day Names, null to use locale data, starts on Sunday
+ internal String[] saSuperShortDayNames; // Super short Day of week names
+ internal String[] saMonthNames; // Month Names (13)
+ internal String[] saAbbrevMonthNames; // Abbrev Month Names (13)
+ internal String[] saMonthGenitiveNames; // Genitive Month Names (13)
+ internal String[] saAbbrevMonthGenitiveNames; // Genitive Abbrev Month Names (13)
+ internal String[] saLeapYearMonthNames; // Multiple strings for the month names in a leap year.
+
+ // Integers at end to make marshaller happier
+ internal int iTwoDigitYearMax = 2029; // Max 2 digit year (for Y2K bug data entry)
+ internal int iCurrentEra = 0; // current era # (usually 1)
+
+ // Use overrides?
+ internal bool bUseUserOverrides; // True if we want user overrides.
+
+ // Static invariant for the invariant locale
+ internal static CalendarData Invariant;
+
+ // Private constructor
+ private CalendarData() { }
+
+ // Invariant constructor
+ static CalendarData()
+ {
+ // Set our default/gregorian US calendar data
+ // Calendar IDs are 1-based, arrays are 0 based.
+ CalendarData invariant = new CalendarData();
+
+ // Set default data for calendar
+ // Note that we don't load resources since this IS NOT supposed to change (by definition)
+ invariant.sNativeName = "Gregorian Calendar"; // Calendar Name
+
+ // Year
+ invariant.iTwoDigitYearMax = 2029; // Max 2 digit year (for Y2K bug data entry)
+ invariant.iCurrentEra = 1; // Current era #
+
+ // Formats
+ invariant.saShortDates = new String[] { "MM/dd/yyyy", "yyyy-MM-dd" }; // short date format
+ invariant.saLongDates = new String[] { "dddd, dd MMMM yyyy" }; // long date format
+ invariant.saYearMonths = new String[] { "yyyy MMMM" }; // year month format
+ invariant.sMonthDay = "MMMM dd"; // Month day pattern
+
+ // Calendar Parts Names
+ invariant.saEraNames = new String[] { "A.D." }; // Era names
+ invariant.saAbbrevEraNames = new String[] { "AD" }; // Abbreviated Era names
+ invariant.saAbbrevEnglishEraNames = new String[] { "AD" }; // Abbreviated era names in English
+ invariant.saDayNames = new String[] { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" };// day names
+ invariant.saAbbrevDayNames = new String[] { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }; // abbreviated day names
+ invariant.saSuperShortDayNames = new String[] { "Su", "Mo", "Tu", "We", "Th", "Fr", "Sa" }; // The super short day names
+ invariant.saMonthNames = new String[] { "January", "February", "March", "April", "May", "June",
+ "July", "August", "September", "October", "November", "December", String.Empty}; // month names
+ invariant.saAbbrevMonthNames = new String[] { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", String.Empty}; // abbreviated month names
+ invariant.saMonthGenitiveNames = invariant.saMonthNames; // Genitive month names (same as month names for invariant)
+ invariant.saAbbrevMonthGenitiveNames = invariant.saAbbrevMonthNames; // Abbreviated genitive month names (same as abbrev month names for invariant)
+ invariant.saLeapYearMonthNames = invariant.saMonthNames; // leap year month names are unused in Gregorian English (invariant)
+
+ invariant.bUseUserOverrides = false;
+
+ // Calendar was built, go ahead and assign it...
+ Invariant = invariant;
+ }
+
+ //
+ // Get a bunch of data for a calendar
+ //
+ internal CalendarData(String localeName, CalendarId calendarId, bool bUseUserOverrides)
+ {
+ this.bUseUserOverrides = bUseUserOverrides;
+
+ if (!LoadCalendarDataFromSystem(localeName, calendarId))
+ {
+ Contract.Assert(false, "[CalendarData] LoadCalendarDataFromSystem call isn't expected to fail for calendar " + calendarId + " locale " + localeName);
+
+ // Something failed, try invariant for missing parts
+ // This is really not good, but we don't want the callers to crash.
+ if (this.sNativeName == null) this.sNativeName = String.Empty; // Calendar Name for the locale.
+
+ // Formats
+ if (this.saShortDates == null) this.saShortDates = Invariant.saShortDates; // Short Data format, default first
+ if (this.saYearMonths == null) this.saYearMonths = Invariant.saYearMonths; // Year/Month Data format, default first
+ if (this.saLongDates == null) this.saLongDates = Invariant.saLongDates; // Long Data format, default first
+ if (this.sMonthDay == null) this.sMonthDay = Invariant.sMonthDay; // Month/Day format
+
+ // Calendar Parts Names
+ if (this.saEraNames == null) this.saEraNames = Invariant.saEraNames; // Names of Eras
+ if (this.saAbbrevEraNames == null) this.saAbbrevEraNames = Invariant.saAbbrevEraNames; // Abbreviated Era Names
+ if (this.saAbbrevEnglishEraNames == null) this.saAbbrevEnglishEraNames = Invariant.saAbbrevEnglishEraNames; // Abbreviated Era Names in English
+ if (this.saDayNames == null) this.saDayNames = Invariant.saDayNames; // Day Names, null to use locale data, starts on Sunday
+ if (this.saAbbrevDayNames == null) this.saAbbrevDayNames = Invariant.saAbbrevDayNames; // Abbrev Day Names, null to use locale data, starts on Sunday
+ if (this.saSuperShortDayNames == null) this.saSuperShortDayNames = Invariant.saSuperShortDayNames; // Super short Day of week names
+ if (this.saMonthNames == null) this.saMonthNames = Invariant.saMonthNames; // Month Names (13)
+ if (this.saAbbrevMonthNames == null) this.saAbbrevMonthNames = Invariant.saAbbrevMonthNames; // Abbrev Month Names (13)
+ // Genitive and Leap names can follow the fallback below
+ }
+
+ if (calendarId == CalendarId.TAIWAN)
+ {
+ if (SystemSupportsTaiwaneseCalendar())
+ {
+ // We got the month/day names from the OS (same as gregorian), but the native name is wrong
+ this.sNativeName = "\x4e2d\x83ef\x6c11\x570b\x66c6";
+ }
+ else
+ {
+ this.sNativeName = String.Empty;
+ }
+ }
+
+ // Check for null genitive names (in case unmanaged side skips it for non-gregorian calendars, etc)
+ if (this.saMonthGenitiveNames == null || this.saMonthGenitiveNames.Length == 0 || String.IsNullOrEmpty(this.saMonthGenitiveNames[0]))
+ this.saMonthGenitiveNames = this.saMonthNames; // Genitive month names (same as month names for invariant)
+ if (this.saAbbrevMonthGenitiveNames == null || this.saAbbrevMonthGenitiveNames.Length == 0 || String.IsNullOrEmpty(this.saAbbrevMonthGenitiveNames[0]))
+ this.saAbbrevMonthGenitiveNames = this.saAbbrevMonthNames; // Abbreviated genitive month names (same as abbrev month names for invariant)
+ if (this.saLeapYearMonthNames == null || this.saLeapYearMonthNames.Length == 0 || String.IsNullOrEmpty(this.saLeapYearMonthNames[0]))
+ this.saLeapYearMonthNames = this.saMonthNames;
+
+ InitializeEraNames(localeName, calendarId);
+
+ InitializeAbbreviatedEraNames(localeName, calendarId);
+
+ // Abbreviated English Era Names are only used for the Japanese calendar.
+ if (calendarId == CalendarId.JAPAN)
+ {
+ this.saAbbrevEnglishEraNames = JapaneseCalendar.EnglishEraNames();
+ }
+ else
+ {
+ // For all others just use the an empty string (doesn't matter we'll never ask for it for other calendars)
+ this.saAbbrevEnglishEraNames = new String[] { "" };
+ }
+
+ // Japanese is the only thing with > 1 era. Its current era # is how many ever
+ // eras are in the array. (And the others all have 1 string in the array)
+ this.iCurrentEra = this.saEraNames.Length;
+ }
+
+ private void InitializeEraNames(string localeName, CalendarId calendarId)
+ {
+ // Note that the saEraNames only include "A.D." We don't have localized names for other calendars available from windows
+ switch (calendarId)
+ {
+ // For Localized Gregorian we really expect the data from the OS.
+ case CalendarId.GREGORIAN:
+ // Fallback for CoreCLR < Win7 or culture.dll missing
+ if (this.saEraNames == null || this.saEraNames.Length == 0 || String.IsNullOrEmpty(this.saEraNames[0]))
+ {
+ this.saEraNames = new String[] { "A.D." };
+ }
+ break;
+
+ // The rest of the calendars have constant data, so we'll just use that
+ case CalendarId.GREGORIAN_US:
+ case CalendarId.JULIAN:
+ this.saEraNames = new String[] { "A.D." };
+ break;
+ case CalendarId.HEBREW:
+ this.saEraNames = new String[] { "C.E." };
+ break;
+ case CalendarId.HIJRI:
+ case CalendarId.UMALQURA:
+ if (localeName == "dv-MV")
+ {
+ // Special case for Divehi
+ this.saEraNames = new String[] { "\x0780\x07a8\x0796\x07b0\x0783\x07a9" };
+ }
+ else
+ {
+ this.saEraNames = new String[] { "\x0628\x0639\x062F \x0627\x0644\x0647\x062C\x0631\x0629" };
+ }
+ break;
+ case CalendarId.GREGORIAN_ARABIC:
+ case CalendarId.GREGORIAN_XLIT_ENGLISH:
+ case CalendarId.GREGORIAN_XLIT_FRENCH:
+ // These are all the same:
+ this.saEraNames = new String[] { "\x0645" };
+ break;
+
+ case CalendarId.GREGORIAN_ME_FRENCH:
+ this.saEraNames = new String[] { "ap. J.-C." };
+ break;
+
+ case CalendarId.TAIWAN:
+ if (SystemSupportsTaiwaneseCalendar())
+ {
+ this.saEraNames = new String[] { "\x4e2d\x83ef\x6c11\x570b" };
+ }
+ else
+ {
+ this.saEraNames = new String[] { String.Empty };
+ }
+ break;
+
+ case CalendarId.KOREA:
+ this.saEraNames = new String[] { "\xb2e8\xae30" };
+ break;
+
+ case CalendarId.THAI:
+ this.saEraNames = new String[] { "\x0e1e\x002e\x0e28\x002e" };
+ break;
+
+ case CalendarId.JAPAN:
+ case CalendarId.JAPANESELUNISOLAR:
+ this.saEraNames = JapaneseCalendar.EraNames();
+ break;
+
+ case CalendarId.PERSIAN:
+ if (this.saEraNames == null || this.saEraNames.Length == 0 || String.IsNullOrEmpty(this.saEraNames[0]))
+ {
+ this.saEraNames = new String[] { "\x0647\x002e\x0634" };
+ }
+ break;
+
+ default:
+ // Most calendars are just "A.D."
+ this.saEraNames = Invariant.saEraNames;
+ break;
+ }
+ }
+
+ private void InitializeAbbreviatedEraNames(string localeName, CalendarId calendarId)
+ {
+ // Note that the saAbbrevEraNames only include "AD" We don't have localized names for other calendars available from windows
+ switch (calendarId)
+ {
+ // For Localized Gregorian we really expect the data from the OS.
+ case CalendarId.GREGORIAN:
+ // Fallback for CoreCLR < Win7 or culture.dll missing
+ if (this.saAbbrevEraNames == null || this.saAbbrevEraNames.Length == 0 || String.IsNullOrEmpty(this.saAbbrevEraNames[0]))
+ {
+ this.saAbbrevEraNames = new String[] { "AD" };
+ }
+ break;
+
+ // The rest of the calendars have constant data, so we'll just use that
+ case CalendarId.GREGORIAN_US:
+ case CalendarId.JULIAN:
+ this.saAbbrevEraNames = new String[] { "AD" };
+ break;
+ case CalendarId.JAPAN:
+ case CalendarId.JAPANESELUNISOLAR:
+ this.saAbbrevEraNames = JapaneseCalendar.AbbrevEraNames();
+ break;
+ case CalendarId.HIJRI:
+ case CalendarId.UMALQURA:
+ if (localeName == "dv-MV")
+ {
+ // Special case for Divehi
+ this.saAbbrevEraNames = new String[] { "\x0780\x002e" };
+ }
+ else
+ {
+ this.saAbbrevEraNames = new String[] { "\x0647\x0640" };
+ }
+ break;
+ case CalendarId.TAIWAN:
+ // Get era name and abbreviate it
+ this.saAbbrevEraNames = new String[1];
+ if (this.saEraNames[0].Length == 4)
+ {
+ this.saAbbrevEraNames[0] = this.saEraNames[0].Substring(2, 2);
+ }
+ else
+ {
+ this.saAbbrevEraNames[0] = this.saEraNames[0];
+ }
+ break;
+
+ case CalendarId.PERSIAN:
+ if (this.saAbbrevEraNames == null || this.saAbbrevEraNames.Length == 0 || String.IsNullOrEmpty(this.saAbbrevEraNames[0]))
+ {
+ this.saAbbrevEraNames = this.saEraNames;
+ }
+ break;
+
+ default:
+ // Most calendars just use the full name
+ this.saAbbrevEraNames = this.saEraNames;
+ break;
+ }
+ }
+
+ internal static CalendarData GetCalendarData(CalendarId calendarId)
+ {
+ //
+ // Get a calendar.
+ // Unfortunately we depend on the locale in the OS, so we need a locale
+ // no matter what. So just get the appropriate calendar from the
+ // appropriate locale here
+ //
+
+ // Get a culture name
+ // TODO: Note that this doesn't handle the new calendars (lunisolar, etc)
+ String culture = CalendarIdToCultureName(calendarId);
+
+ // Return our calendar
+ return CultureInfo.GetCultureInfo(culture).m_cultureData.GetCalendar(calendarId);
+ }
+
+ private static String CalendarIdToCultureName(CalendarId calendarId)
+ {
+ switch (calendarId)
+ {
+ case CalendarId.GREGORIAN_US:
+ return "fa-IR"; // "fa-IR" Iran
+
+ case CalendarId.JAPAN:
+ return "ja-JP"; // "ja-JP" Japan
+
+ case CalendarId.TAIWAN:
+ return "zh-TW"; // zh-TW Taiwan
+
+ case CalendarId.KOREA:
+ return "ko-KR"; // "ko-KR" Korea
+
+ case CalendarId.HIJRI:
+ case CalendarId.GREGORIAN_ARABIC:
+ case CalendarId.UMALQURA:
+ return "ar-SA"; // "ar-SA" Saudi Arabia
+
+ case CalendarId.THAI:
+ return "th-TH"; // "th-TH" Thailand
+
+ case CalendarId.HEBREW:
+ return "he-IL"; // "he-IL" Israel
+
+ case CalendarId.GREGORIAN_ME_FRENCH:
+ return "ar-DZ"; // "ar-DZ" Algeria
+
+ case CalendarId.GREGORIAN_XLIT_ENGLISH:
+ case CalendarId.GREGORIAN_XLIT_FRENCH:
+ return "ar-IQ"; // "ar-IQ"; Iraq
+
+ default:
+ // Default to gregorian en-US
+ break;
+ }
+
+ return "en-US";
+ }
+ }
+}
+