| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| using System; |
| |
| namespace Usergrid.Sdk |
| { |
| public static class UnixDateTimeHelper |
| { |
| private const string InvalidUnixEpochErrorMessage = "Unix epoc starts January 1st, 1970"; |
| |
| /// <summary> |
| /// Convert a long into a DateTime |
| /// </summary> |
| public static DateTime FromUnixTime(this Int64 self) |
| { |
| var ret = new DateTime(1970, 1, 1); |
| return ret.AddSeconds(self/1000); |
| } |
| |
| /// <summary> |
| /// Convert a DateTime into a long |
| /// </summary> |
| public static Int64 ToUnixTime(this DateTime self) |
| { |
| |
| if (self == DateTime.MinValue) |
| { |
| return 0; |
| } |
| |
| var epoc = new DateTime(1970, 1, 1); |
| var delta = self - epoc; |
| |
| if (delta.TotalSeconds < 0) throw new ArgumentOutOfRangeException(InvalidUnixEpochErrorMessage); |
| |
| return (long) delta.TotalSeconds * 1000; |
| } |
| } |
| } |
| |