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Diffstat (limited to 'mcs/class/corlib/System/TimeZone.cs')
| -rw-r--r-- | mcs/class/corlib/System/TimeZone.cs | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/mcs/class/corlib/System/TimeZone.cs b/mcs/class/corlib/System/TimeZone.cs deleted file mode 100644 index ce77e0d3d3f..00000000000 --- a/mcs/class/corlib/System/TimeZone.cs +++ /dev/null @@ -1,194 +0,0 @@ -// -// System.TimeZone.cs -// -// Author: Duncan Mak (duncan@ximian.com) -// Ajay Kumar Dwivedi (adwiv@yahoo.com) -// Martin Baulig (martin@gnome.org) -// -// (C) Ximian, Inc. -// - -using System.Collections; -using System.Globalization; -using System.Runtime.CompilerServices; - -namespace System { - - [Serializable] - public abstract class TimeZone - { - // Fields - private static TimeZone currentTimeZone; - - // Constructor - protected TimeZone () - { - } - - // Properties - public static TimeZone CurrentTimeZone - { - get { - if (currentTimeZone == null) - currentTimeZone = new CurrentTimeZone (); - - return currentTimeZone; - } - } - - public abstract string DaylightName - { - get; - } - - public abstract string StandardName - { - get; - } - - // Methods - public abstract DaylightTime GetDaylightChanges (int year); - - public abstract TimeSpan GetUtcOffset (DateTime time); - - public virtual bool IsDaylightSavingTime (DateTime time) - { - return IsDaylightSavingTime (time, GetDaylightChanges (time.Year)); - } - - public static bool IsDaylightSavingTime (DateTime time, DaylightTime daylightTimes) - { - if (daylightTimes == null) - throw new ArgumentNullException ("daylightTimes"); - - // If Start == End, then DST is off - if (daylightTimes.Start.Ticks == daylightTimes.End.Ticks) - return false; - - //We are in the northern hemisphere. - if (daylightTimes.Start.Ticks < daylightTimes.End.Ticks) { - if (daylightTimes.Start.Ticks < time.Ticks - && daylightTimes.End.Ticks > time.Ticks) - return true; // time lies between Start and End - - } else { // We are in the southern hemisphere. - if (time.Year == daylightTimes.Start.Year && time.Year == daylightTimes.End.Year) - if (time.Ticks < daylightTimes.End.Ticks - || time.Ticks > daylightTimes.Start.Ticks) - return true; // time is less than End OR more than Start - } - - return false; - } - - public virtual DateTime ToLocalTime (DateTime time) - { - return time + GetUtcOffset (time); - } - - public virtual DateTime ToUniversalTime (DateTime time) - { - return time - GetUtcOffset (time); - } - } - - internal class CurrentTimeZone : TimeZone - { - // Fields - private static string daylightName; - private static string standardName; - - // A yearwise cache of DaylightTime. - private static Hashtable daylightCache = new Hashtable (1); - - // the offset when daylightsaving is not on. - private static TimeSpan utcOffsetWithOutDLS; - - // the offset when daylightsaving is on. - private static TimeSpan utcOffsetWithDLS; - - internal enum TimeZoneData { - DaylightSavingStartIdx, - DaylightSavingEndIdx, - UtcOffsetIdx, - AdditionalDaylightOffsetIdx - }; - - internal enum TimeZoneNames { - StandardNameIdx, - DaylightNameIdx - }; - - // Internal method to get timezone data. - // data[0]: start of daylight saving time (in DateTime ticks). - // data[1]: end of daylight saving time (in DateTime ticks). - // data[2]: utcoffset (in TimeSpan ticks). - // data[3]: additional offset when daylight saving (in TimeSpan ticks). - // name[0]: name of this timezone when not daylight saving. - // name[1]: name of this timezone when daylight saving. - [MethodImplAttribute(MethodImplOptions.InternalCall)] - private static extern bool GetTimeZoneData (int year, - out Int64[] data, - out string[] names); - - // Constructor - internal CurrentTimeZone () - : base () - { - Int64[] data; - string[] names; - - DateTime now = new DateTime(DateTime.GetNow ()); - if (!GetTimeZoneData (now.Year, out data, out names)) - throw new NotSupportedException (Locale.GetText ("Can't get timezone name")); - - standardName = Locale.GetText (names[(int)TimeZoneNames.StandardNameIdx]); - daylightName = Locale.GetText (names[(int)TimeZoneNames.DaylightNameIdx]); - - utcOffsetWithOutDLS = new TimeSpan (data[(int)TimeZoneData.UtcOffsetIdx]); - utcOffsetWithDLS = new TimeSpan (data[(int)TimeZoneData.UtcOffsetIdx] + data[(int)TimeZoneData.AdditionalDaylightOffsetIdx]); - } - - // Properties - public override string DaylightName - { - get { return daylightName; } - } - - public override string StandardName - { - get { return standardName; } - } - - // Methods - [MonoTODO] - public override DaylightTime GetDaylightChanges (int year) - { - if (year < 1 || year > 9999) - throw new ArgumentOutOfRangeException (year + " is not in a range between 1 and 9999."); - - if (daylightCache [year] == null) { - Int64[] data; - string[] names; - - if (!GetTimeZoneData (year, out data, out names)) - throw new ArgumentException (Locale.GetText ("Can't get timezone data for " + year)); - - DaylightTime dlt = new DaylightTime (new DateTime (data[(int)TimeZoneData.DaylightSavingStartIdx]), - new DateTime (data[(int)TimeZoneData.DaylightSavingEndIdx]), - new TimeSpan (data[(int)TimeZoneData.AdditionalDaylightOffsetIdx])); - daylightCache.Add (year, dlt); - } - - return (DaylightTime) daylightCache [year]; - } - - public override TimeSpan GetUtcOffset (DateTime time) - { - if (IsDaylightSavingTime (time)) - return utcOffsetWithDLS; - - return utcOffsetWithOutDLS; - } - } -} |