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using System;
using System.Globalization;
using Org.BouncyCastle.Asn1;
namespace Org.BouncyCastle.Asn1.Cms
{
public class Time
: Asn1Encodable, IAsn1Choice
{
private readonly Asn1Object time;
public static Time GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return GetInstance(obj.GetObject());
}
public Time(
Asn1Object time)
{
if (!(time is DerUtcTime)
&& !(time is DerGeneralizedTime))
{
throw new ArgumentException("unknown object passed to Time");
}
this.time = time;
}
/**
* creates a time object from a given date - if the date is between 1950
* and 2049 a UTCTime object is Generated, otherwise a GeneralizedTime
* is used.
*/
public Time(
DateTime date)
{
string d = date.ToString("yyyyMMddHHmmss") + "Z";
int year = int.Parse(d.Substring(0, 4));
if (year < 1950 || year > 2049)
{
time = new DerGeneralizedTime(d);
}
else
{
time = new DerUtcTime(d.Substring(2));
}
}
public static Time GetInstance(
object obj)
{
if (obj == null || obj is Time)
return (Time)obj;
if (obj is DerUtcTime)
return new Time((DerUtcTime)obj);
if (obj is DerGeneralizedTime)
return new Time((DerGeneralizedTime)obj);
throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
}
public string TimeString
{
get
{
if (time is DerUtcTime)
{
return ((DerUtcTime)time).AdjustedTimeString;
}
else
{
return ((DerGeneralizedTime)time).GetTime();
}
}
}
public DateTime Date
{
get
{
try
{
if (time is DerUtcTime)
{
return ((DerUtcTime)time).ToAdjustedDateTime();
}
return ((DerGeneralizedTime)time).ToDateTime();
}
catch (FormatException e)
{
// this should never happen
throw new InvalidOperationException("invalid date string: " + e.Message);
}
}
}
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* Time ::= CHOICE {
* utcTime UTCTime,
* generalTime GeneralizedTime }
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
return time;
}
}
}
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