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Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/util/date/DateTimeUtilities.cs

@@ -0,0 +1,87 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Utilities.Date
+{
+	public static class DateTimeUtilities
+	{
+#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || UNITY_2021_2_OR_NEWER
+        public static readonly DateTime UnixEpoch = DateTime.UnixEpoch;
+#else
+        public static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+#endif
+
+        public static readonly long MaxUnixMs =
+            (DateTime.MaxValue.Ticks - UnixEpoch.Ticks) / TimeSpan.TicksPerMillisecond;
+        public static readonly long MinUnixMs = 0L;
+
+        /// <summary>
+        /// Return the number of milliseconds since the Unix epoch (1 Jan., 1970 UTC) for a given DateTime value.
+        /// </summary>
+        /// <remarks>The DateTime value will be converted to UTC (using <see cref="DateTime.ToUniversalTime"/> before
+        /// conversion.</remarks>
+        /// <param name="dateTime">A DateTime value not before the epoch.</param>
+        /// <returns>Number of whole milliseconds after epoch.</returns>
+        /// <exception cref="ArgumentOutOfRangeException">'dateTime' is before the epoch.</exception>
+        public static long DateTimeToUnixMs(DateTime dateTime)
+		{
+            DateTime utc = dateTime.ToUniversalTime();
+            if (utc.CompareTo(UnixEpoch) < 0)
+				throw new ArgumentOutOfRangeException(nameof(dateTime), "DateTime value may not be before the epoch");
+
+			return (utc.Ticks - UnixEpoch.Ticks) / TimeSpan.TicksPerMillisecond;
+		}
+
+        /// <summary>
+        /// Create a UTC DateTime value from the number of milliseconds since the Unix epoch (1 Jan., 1970 UTC).
+        /// </summary>
+        /// <param name="unixMs">Number of milliseconds since the epoch.</param>
+        /// <returns>A UTC DateTime value</returns>
+        /// <exception cref="ArgumentOutOfRangeException">'unixMs' is before 'MinUnixMs' or after 'MaxUnixMs'.
+        /// </exception>
+        public static DateTime UnixMsToDateTime(long unixMs)
+		{
+			if (unixMs < MinUnixMs || unixMs > MaxUnixMs)
+				throw new ArgumentOutOfRangeException(nameof(unixMs));
+
+            return new DateTime(unixMs * TimeSpan.TicksPerMillisecond + UnixEpoch.Ticks, DateTimeKind.Utc);
+		}
+
+		/// <summary>
+		/// Return the current number of milliseconds since the Unix epoch (1 Jan., 1970 UTC).
+		/// </summary>
+		public static long CurrentUnixMs()
+		{
+			return DateTimeToUnixMs(DateTime.UtcNow);
+		}
+
+        public static DateTime WithPrecisionCentisecond(DateTime dateTime)
+        {
+            int millisecond = dateTime.Millisecond - (dateTime.Millisecond % 10);
+            return new DateTime(dateTime.Year, dateTime.Month, dateTime.Day,
+                dateTime.Hour, dateTime.Minute, dateTime.Second, millisecond, dateTime.Kind);
+        }
+
+        public static DateTime WithPrecisionDecisecond(DateTime dateTime)
+        {
+            int millisecond = dateTime.Millisecond - (dateTime.Millisecond % 100);
+            return new DateTime(dateTime.Year, dateTime.Month, dateTime.Day,
+                dateTime.Hour, dateTime.Minute, dateTime.Second, millisecond, dateTime.Kind);
+        }
+
+        public static DateTime WithPrecisionMillisecond(DateTime dateTime)
+        {
+            return new DateTime(dateTime.Year, dateTime.Month, dateTime.Day,
+                dateTime.Hour, dateTime.Minute, dateTime.Second, dateTime.Millisecond, dateTime.Kind);
+        }
+
+        public static DateTime WithPrecisionSecond(DateTime dateTime)
+        {
+            return new DateTime(dateTime.Year, dateTime.Month, dateTime.Day,
+                dateTime.Hour, dateTime.Minute, dateTime.Second, dateTime.Kind);
+        }
+    }
+}
+#pragma warning restore
+#endif