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UnixTimestamp.cs
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116 lines (102 loc) · 4.37 KB
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using System.Common;
namespace System
{
/// <summary>
/// 时间戳
/// </summary>
public static class UnixTimestamp
{
static double ToTimestamp(this DateTime dt, UnixTimestampType unixTimestampType)
{
var timeDiff = new TimeSpan(dt.ToUniversalTime().Ticks - Constants.UnixEpochTicks);
var total = unixTimestampType switch
{
UnixTimestampType.Milliseconds => timeDiff.TotalMilliseconds,
UnixTimestampType.Seconds => timeDiff.TotalSeconds,
_ => throw new ArgumentOutOfRangeException(nameof(unixTimestampType), unixTimestampType, null),
};
return (double)Math.Floor(total);
}
/// <summary>
/// 转换为Unix时间戳 <see cref="UnixTimestampType.Milliseconds"/>
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static long ToTimestamp(this DateTime dt) => (long)dt.ToTimestamp(UnixTimestampType.Milliseconds);
/// <summary>
/// 转换为Unix时间戳 <see cref="UnixTimestampType.Seconds"/>
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static int ToTimestampS(this DateTime dt) => (int)dt.ToTimestamp(UnixTimestampType.Seconds);
static long GetTicks(long timestamp)
{
if (timestamp > Constants.TimestampMillisecondsMaxValue) timestamp = Constants.TimestampMillisecondsMaxValue;
var ticks = Constants.UnixEpochTicks + TimeSpan.FromMilliseconds(timestamp).Ticks;
return ticks;
}
static long GetTicks(int timestamp)
{
var ticks = Constants.UnixEpochTicks + TimeSpan.FromSeconds(timestamp).Ticks;
return ticks;
}
static DateTime GetDateTime(long ticks, bool convertLocalTime = true)
{
var dt = new DateTime(ticks, DateTimeKind.Utc);
return convertLocalTime ? dt.ToLocalTime() : dt;
}
static DateTimeOffset GetDateTimeOffset(long ticks, bool convertLocalTime = true)
{
var dt = new DateTimeOffset(ticks, TimeSpan.Zero);
return convertLocalTime ? dt.ToLocalTime() : dt;
}
/// <summary>
/// 将 <see cref="UnixTimestampType.Milliseconds"/> Unix时间戳 转换为 <see cref="DateTime"/>
/// </summary>
/// <param name="timestamp"></param>
/// <param name="convertLocalTime"></param>
/// <returns></returns>
public static DateTime ToDateTime(this long timestamp, bool convertLocalTime = true)
{
var ticks = GetTicks(timestamp);
return GetDateTime(ticks, convertLocalTime);
}
/// <summary>
/// 将 <see cref="UnixTimestampType.Seconds"/> Unix时间戳 转换为 <see cref="DateTime"/>
/// </summary>
/// <param name="timestamp"></param>
/// <param name="convertLocalTime"></param>
/// <returns></returns>
public static DateTime ToDateTime(this int timestamp, bool convertLocalTime = true)
{
var ticks = GetTicks(timestamp);
return GetDateTime(ticks, convertLocalTime);
}
/// <summary>
/// 将 <see cref="UnixTimestampType.Milliseconds"/> Unix时间戳 转换为 <see cref="DateTimeOffset"/>
/// </summary>
/// <param name="timestamp"></param>
/// <param name="convertLocalTime"></param>
/// <returns></returns>
public static DateTimeOffset ToDateTimeOffset(this long timestamp, bool convertLocalTime = true)
{
var ticks = GetTicks(timestamp);
return GetDateTimeOffset(ticks, convertLocalTime);
}
/// <summary>
/// 将 <see cref="UnixTimestampType.Seconds"/> Unix时间戳 转换为 <see cref="DateTimeOffset"/>
/// </summary>
/// <param name="timestamp"></param>
/// <param name="convertLocalTime"></param>
/// <returns></returns>
public static DateTimeOffset ToDateTimeOffset(this int timestamp, bool convertLocalTime = true)
{
var ticks = GetTicks(timestamp);
return GetDateTimeOffset(ticks, convertLocalTime);
}
#if DEBUG
[Obsolete("use ToTimestamp", true)]
public static long CurrentMillis(this DateTime dateTime) => ToTimestamp(dateTime);
#endif
}
}