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+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+namespace System.Globalization
+{
+
+ using System;
+ using System.Runtime.InteropServices;
+ using System.Runtime.CompilerServices;
+ using System.Runtime.Versioning;
+ using System.Diagnostics.Contracts;
+ //
+ // 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(int)
+
+ // StructLayout is needed here otherwise compiler can re-arrange the fields.
+ // We have to keep this in-sync with the definition in calendardata.h
+ //
+ // WARNING WARNING WARNING
+ //
+ // WARNING: Anything changed here also needs to be updated on the native side (object.h see type CalendarDataBaseObject)
+ // WARNING: The type loader will rearrange class member offsets so the mscorwks!CalendarDataBaseObject
+ // WARNING: must be manually structured to match the true loaded class layout
+ //
+ internal 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, int calendarId, bool bUseUserOverrides)
+ {
+ // Call nativeGetCalendarData to populate the data
+ this.bUseUserOverrides = bUseUserOverrides;
+ if (!nativeGetCalendarData(this, localeName, calendarId))
+ {
+ Contract.Assert(false, "[CalendarData] nativeGetCalendarData 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
+ }
+
+ // Clean up the escaping of the formats
+ this.saShortDates = CultureData.ReescapeWin32Strings(this.saShortDates);
+ this.saLongDates = CultureData.ReescapeWin32Strings(this.saLongDates);
+ this.saYearMonths = CultureData.ReescapeWin32Strings(this.saYearMonths);
+ this.sMonthDay = CultureData.ReescapeWin32String(this.sMonthDay);
+
+ if ((CalendarId)calendarId == CalendarId.TAIWAN)
+ {
+ if (CultureInfo.IsTaiwanSku)
+ {
+ // 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 || String.IsNullOrEmpty(this.saMonthGenitiveNames[0]))
+ this.saMonthGenitiveNames = this.saMonthNames; // Genitive month names (same as month names for invariant)
+ if (this.saAbbrevMonthGenitiveNames == null || String.IsNullOrEmpty(this.saAbbrevMonthGenitiveNames[0]))
+ this.saAbbrevMonthGenitiveNames = this.saAbbrevMonthNames; // Abbreviated genitive month names (same as abbrev month names for invariant)
+ if (this.saLeapYearMonthNames == null || 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 == (int)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, int calendarId)
+ {
+ // Note that the saEraNames only include "A.D." We don't have localized names for other calendars available from windows
+ switch ((CalendarId)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 (CultureInfo.IsTaiwanSku)
+ {
+ 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;
+ default:
+ // Most calendars are just "A.D."
+ this.saEraNames = Invariant.saEraNames;
+ break;
+ }
+ }
+
+ private void InitializeAbbreviatedEraNames(string localeName, int calendarId)
+ {
+ // Note that the saAbbrevEraNames only include "AD" We don't have localized names for other calendars available from windows
+ switch ((CalendarId)calendarId)
+ {
+ // For Localized Gregorian we really expect the data from the OS.
+ case CalendarId.GREGORIAN:
+ // Fallback for 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;
+ default:
+ // Most calendars just use the full name
+ this.saAbbrevEraNames = this.saEraNames;
+ break;
+ }
+ }
+
+ internal static CalendarData GetCalendarData(int 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
+ String culture = CalendarIdToCultureName(calendarId);
+
+ // Return our calendar
+ return CultureInfo.GetCultureInfo(culture).m_cultureData.GetCalendar(calendarId);
+ }
+
+ //
+ // Helper methods
+ //
+ private static String CalendarIdToCultureName(int calendarId)
+ {
+ // note that this doesn't handle the new calendars (lunisolar, etc)
+ switch (calendarId)
+ {
+ case Calendar.CAL_GREGORIAN_US:
+ return "fa-IR"; // "fa-IR" Iran
+
+ case Calendar.CAL_JAPAN:
+ return "ja-JP"; // "ja-JP" Japan
+
+ case Calendar.CAL_TAIWAN: // zh-TW Taiwan
+ return "zh-TW";
+
+ case Calendar.CAL_KOREA:
+ return "ko-KR"; // "ko-KR" Korea
+
+ case Calendar.CAL_HIJRI:
+ case Calendar.CAL_GREGORIAN_ARABIC:
+ case Calendar.CAL_UMALQURA:
+ return "ar-SA"; // "ar-SA" Saudi Arabia
+
+ case Calendar.CAL_THAI:
+ return "th-TH"; // "th-TH" Thailand
+
+ case Calendar.CAL_HEBREW:
+ return "he-IL"; // "he-IL" Israel
+
+ case Calendar.CAL_GREGORIAN_ME_FRENCH:
+ return "ar-DZ"; // "ar-DZ" Algeria
+
+ case Calendar.CAL_GREGORIAN_XLIT_ENGLISH:
+ case Calendar.CAL_GREGORIAN_XLIT_FRENCH:
+ return "ar-IQ"; // "ar-IQ"; Iraq
+
+ default:
+ // Default to gregorian en-US
+ break;
+ }
+
+ return "en-US";
+ }
+
+ internal void FixupWin7MonthDaySemicolonBug()
+ {
+ int unescapedCharacterIndex = FindUnescapedCharacter(sMonthDay, ';');
+ if (unescapedCharacterIndex > 0)
+ {
+ sMonthDay = sMonthDay.Substring(0, unescapedCharacterIndex);
+ }
+ }
+ private static int FindUnescapedCharacter(string s, char charToFind)
+ {
+ bool inComment = false;
+ int length = s.Length;
+ for (int i = 0; i < length; i++)
+ {
+ char c = s[i];
+
+ switch (c)
+ {
+ case '\'':
+ inComment = !inComment;
+ break;
+ case '\\':
+ i++; // escape sequence -- skip next character
+ break;
+ default:
+ if (!inComment && charToFind == c)
+ {
+ return i;
+ }
+ break;
+ }
+ }
+ return -1;
+ }
+
+
+ // Get native two digit year max
+ [System.Security.SecurityCritical] // auto-generated
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ internal static extern int nativeGetTwoDigitYearMax(int calID);
+
+ // Call native side to load our calendar data
+ [System.Security.SecuritySafeCritical] // auto-generated
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private static extern bool nativeGetCalendarData(CalendarData data, String localeName, int calendar);
+
+ // Call native side to figure out which calendars are allowed
+ [System.Security.SecuritySafeCritical] // auto-generated
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ internal static extern int nativeGetCalendars(String localeName, bool useUserOverride, [In, Out] int[] calendars);
+
+ }
+ }
+