public static DateTimeOffset ParseDateTime(string key, DateTimeKeyFlags flags)
{
DateTimeOffset dateTime;
if (!TryParseDateTime(key, flags, out dateTime))
{
throw new Exception($"Unable to parse key: {key}");
}
return(dateTime);
}
public static bool TryParseDateTimeKey(string key, DateTimeKeyFlags flags, DateTimeKey dateTimeKey)
{
DateTimeOffset dateTime;
if (!TryParseDateTime(key, flags, out dateTime))
{
return(false);
}
dateTimeKey = new DateTimeKey(dateTime, flags);
return(true);
}
public static bool TryParseDateTime(string key, DateTimeKeyFlags flags, out DateTimeOffset dateTime)
{
var hours = DateTimeKeyFlags.Hours == (flags & DateTimeKeyFlags.Hours);
var minutes = DateTimeKeyFlags.Minutes == (flags & DateTimeKeyFlags.Minutes);
var provider = CultureInfo.InvariantCulture;
if (flags == DateTimeKeyFlags.Date)
{
return(DateTimeOffset.TryParseExact(key, "yyyyMMdd", provider, DateTimeStyles.AdjustToUniversal, out dateTime));
}
else
{
return(DateTimeOffset.TryParseExact(key, @"yyyyMMdd\THHmm", provider, DateTimeStyles.AdjustToUniversal, out dateTime));
}
}
public static string GetKey(DateTimeOffset dateTime, DateTimeKeyFlags flags)
{
var builder = new StringBuilder();
if (DateTimeKeyFlags.Date == (flags & DateTimeKeyFlags.Date))
{
builder.Append(dateTime.Year.ToString("0000"));
builder.Append(dateTime.Month.ToString("00"));
builder.Append(dateTime.Day.ToString("00"));
}
var hours = DateTimeKeyFlags.Hours == (flags & DateTimeKeyFlags.Hours);
var minutes = DateTimeKeyFlags.Minutes == (flags & DateTimeKeyFlags.Minutes);
if (hours || minutes)
{
builder.Append("T");
builder.Append(hours ? dateTime.Hour.ToString("00") : "00");
builder.Append(minutes ? dateTime.Minute.ToString("00") : "00");
}
return(builder.ToString());
}
public static DateTimeKey ParseDateTimeKey(string key, DateTimeKeyFlags flags)
{
var dateTime = ParseDateTime(key, flags);
return(new DateTimeKey(dateTime, flags));
}
public DateTimeKey(DateTimeOffset dateTime, DateTimeKeyFlags flags)
{
Key = GetKey(dateTime, flags);
Flags = flags;
}
