public static TimeZoneInfo FindSystemTimeZoneById(string id)
{
//FIXME: this method should check for cached values in systemTimeZones
if (id == null)
{
throw new ArgumentNullException("id");
}
#if !NET_2_1
if (TimeZoneKey != null)
{
RegistryKey key = TimeZoneKey.OpenSubKey(id, false);
if (key == null)
{
throw new TimeZoneNotFoundException();
}
return(FromRegistryKey(id, key));
}
#endif
#if MONODROID
return(ZoneInfoDB.GetTimeZone(id));
#elif LIBC
string filepath = Path.Combine(TimeZoneDirectory, id);
return(FindSystemTimeZoneByFileName(id, filepath));
#else
throw new NotImplementedException();
#endif
}
public static ReadOnlyCollection <TimeZoneInfo> GetSystemTimeZones()
{
if (systemTimeZones == null)
{
systemTimeZones = new List <TimeZoneInfo> ();
#if !NET_2_1
if (TimeZoneKey != null)
{
foreach (string id in TimeZoneKey.GetSubKeyNames())
{
try {
systemTimeZones.Add(FindSystemTimeZoneById(id));
} catch {}
}
return(new ReadOnlyCollection <TimeZoneInfo> (systemTimeZones));
}
#endif
#if MONODROID
foreach (string id in ZoneInfoDB.GetAvailableIds())
{
systemTimeZones.Add(ZoneInfoDB.GetTimeZone(id));
}
#elif MONOTOUCH
if (systemTimeZones.Count == 0)
{
foreach (string name in GetMonoTouchNames())
{
using (Stream stream = GetMonoTouchData(name)) {
systemTimeZones.Add(BuildFromStream(name, stream));
}
}
}
#elif LIBC
string[] continents = new string [] { "Africa", "America", "Antarctica", "Arctic", "Asia", "Atlantic", "Brazil", "Canada", "Chile", "Europe", "Indian", "Mexico", "Mideast", "Pacific", "US" };
foreach (string continent in continents)
{
try {
foreach (string zonepath in Directory.GetFiles(Path.Combine(TimeZoneDirectory, continent)))
{
try {
string id = String.Format("{0}/{1}", continent, Path.GetFileName(zonepath));
systemTimeZones.Add(FindSystemTimeZoneById(id));
} catch (ArgumentNullException) {
} catch (TimeZoneNotFoundException) {
} catch (InvalidTimeZoneException) {
} catch (Exception) {
throw;
}
}
} catch {}
}
#else
throw new NotImplementedException("This method is not implemented for this platform");
#endif
}
return(new ReadOnlyCollection <TimeZoneInfo> (systemTimeZones));
}
public static TimeZoneInfo FindSystemTimeZoneById(string id)
{
//FIXME: this method should check for cached values in systemTimeZones
if (id == null)
{
throw new ArgumentNullException("id");
}
#if !NET_2_1
if (TimeZoneKey != null)
{
RegistryKey key = TimeZoneKey.OpenSubKey(id, false);
if (key == null)
{
throw new TimeZoneNotFoundException();
}
return(FromRegistryKey(id, key));
}
#endif
#if MONODROID
var timeZoneInfo = ZoneInfoDB.GetTimeZone(id);
if (timeZoneInfo == null)
{
throw new TimeZoneNotFoundException();
}
return(timeZoneInfo);
#else
// Local requires special logic that already exists in the Local property (bug #326)
if (id == "Local")
{
return(Local);
}
#if MONOTOUCH
using (Stream stream = GetMonoTouchData(id)) {
return(BuildFromStream(id, stream));
}
#elif LIBC
string filepath = Path.Combine(TimeZoneDirectory, id);
return(FindSystemTimeZoneByFileName(id, filepath));
#else
throw new NotImplementedException();
#endif
#endif
}