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Common/DTS.Common.Utilities/.svn/pristine/88/88ecd59498210be530f92232a8c3e8c92fc1f04d.svn-base

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace DTS.Common.Utilities
+{
+    /// <summary>
+    /// Convert a DateTime to Unix Time.  No attempt is made to correct for time zone/localities.
+    /// </summary>
+    public class Time
+    {
+        public static UInt32 DateTimeToUnixTimestamp(DateTime dateTime)
+        {
+            var start = new DateTime(1970, 1, 1);
+            var span = dateTime - start;
+
+            return (UInt32)span.TotalSeconds;
+        }
+
+        public static UInt32 CurrentUtcUnixTimestamp()
+        {
+            var span = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc));
+
+            return (UInt32)span.TotalSeconds;
+        }
+
+        public static UInt32 CurrentLocalUnixTimestamp()
+        {
+            var span = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Local));
+
+            return (UInt32)span.TotalSeconds;
+        }
+
+        public static DateTime ToDateTime(UInt32 seconds)
+        {
+            return new DateTime(1970, 1, 1).AddSeconds(seconds);
+        }
+
+        public static UInt32 ToUnixTime(DateTime dateTime)
+        {
+            var start = new DateTime(1970, 1, 1);
+            var span = dateTime - start;
+
+            return (UInt32)span.TotalSeconds;
+        }
+
+        public static bool IsBeginningOfTime(DateTime dateTime)
+        {
+            var start = new DateTime(1970, 1, 1);
+            var span = dateTime - start;
+
+            return (0 == span.TotalSeconds);
+        }
+
+    }
+}