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-rw-r--r--src/mscorlib/corefx/System/Globalization/JapaneseCalendar.Unix.cs91
1 files changed, 91 insertions, 0 deletions
diff --git a/src/mscorlib/corefx/System/Globalization/JapaneseCalendar.Unix.cs b/src/mscorlib/corefx/System/Globalization/JapaneseCalendar.Unix.cs
new file mode 100644
index 0000000000..12f430c71c
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+++ b/src/mscorlib/corefx/System/Globalization/JapaneseCalendar.Unix.cs
@@ -0,0 +1,91 @@
+// 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.Collections.Generic;
+using System.Security;
+
+namespace System.Globalization
+{
+ public partial class JapaneseCalendar : Calendar
+ {
+ [SecuritySafeCritical]
+ private static EraInfo[] GetJapaneseEras()
+ {
+ string[] eraNames;
+ if (!CalendarData.EnumCalendarInfo("ja-JP", CalendarId.JAPAN, CalendarDataType.EraNames, out eraNames))
+ {
+ return null;
+ }
+
+ string[] abbrevEnglishEraNames;
+ if (!CalendarData.EnumCalendarInfo("en", CalendarId.JAPAN, CalendarDataType.AbbrevEraNames, out abbrevEnglishEraNames))
+ {
+ return null;
+ }
+
+ List<EraInfo> eras = new List<EraInfo>();
+ int lastMaxYear = GregorianCalendar.MaxYear;
+
+ int latestEra = Interop.GlobalizationInterop.GetLatestJapaneseEra();
+ for (int i = latestEra; i >= 0; i--)
+ {
+ DateTime dt;
+ if (!GetJapaneseEraStartDate(i, out dt))
+ {
+ return null;
+ }
+
+ if (dt < JapaneseCalendar.calendarMinValue)
+ {
+ // only populate the Eras that are valid JapaneseCalendar date times
+ break;
+ }
+
+ eras.Add(new EraInfo(i, dt.Year, dt.Month, dt.Day, dt.Year - 1, 1, lastMaxYear - dt.Year + 1,
+ eraNames[i], GetAbbreviatedEraName(eraNames, i), abbrevEnglishEraNames[i]));
+
+ lastMaxYear = dt.Year;
+ }
+
+ // remap the Era numbers, now that we know how many there will be
+ for (int i = 0; i < eras.Count; i++)
+ {
+ eras[i].era = eras.Count - i;
+ }
+
+ return eras.ToArray();
+ }
+
+ // PAL Layer ends here
+
+ private static string GetAbbreviatedEraName(string[] eraNames, int eraIndex)
+ {
+ // This matches the behavior on Win32 - only returning the first character of the era name.
+ // See Calendar.EraAsString(Int32) - https://msdn.microsoft.com/en-us/library/windows/apps/br206751.aspx
+ return eraNames[eraIndex].Substring(0, 1);
+ }
+
+ [SecuritySafeCritical]
+ private static bool GetJapaneseEraStartDate(int era, out DateTime dateTime)
+ {
+ dateTime = default(DateTime);
+
+ int startYear;
+ int startMonth;
+ int startDay;
+ bool result = Interop.GlobalizationInterop.GetJapaneseEraStartDate(
+ era,
+ out startYear,
+ out startMonth,
+ out startDay);
+
+ if (result)
+ {
+ dateTime = new DateTime(startYear, startMonth, startDay);
+ }
+
+ return result;
+ }
+ }
+}