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69 lines
2.7 KiB
C#
69 lines
2.7 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Globalization;
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namespace Citrix.XenCenter
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{
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public class TimeUtil
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{
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public const long TicksBefore1970 = 621355968000000000;
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public const string ISO8601DateFormat = "yyyyMMddTHH:mm:ssZ";
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public static long TicksToSeconds(long ticks)
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{
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return ticks / 10000000;
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}
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public static long TicksToSecondsSince1970(long ticks)
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{
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return (long)Math.Floor(new TimeSpan(ticks - (TicksBefore1970)).TotalSeconds);
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}
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/// <summary>
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/// Parses an ISO 8601 date/time into a DateTime.
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/// </summary>
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/// <param name="toParse">Must be of the format yyyyMMddTHH:mm:ssZ. Must not be null.</param>
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/// <returns>The parsed DateTime with Kind DateTimeKind.Utc.</returns>
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public static DateTime ParseISO8601DateTime(string toParse)
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{
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return DateTime.ParseExact(toParse, ISO8601DateFormat, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal);
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}
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public static string ToISO8601DateTime(DateTime t)
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{
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return t.ToUniversalTime().ToString(ISO8601DateFormat, CultureInfo.InvariantCulture);
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}
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}
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}
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