using System;
using System.IO;

namespace ICSharpCode.SharpZipLib.Zip
{
	// Token: 0x0200005D RID: 93
	public class ExtendedUnixData : ITaggedData
	{
		// Token: 0x170000D2 RID: 210
		// (get) Token: 0x0600038D RID: 909 RVA: 0x000125C0 File Offset: 0x000115C0
		public short TagID
		{
			get
			{
				return 21589;
			}
		}

		// Token: 0x0600038E RID: 910 RVA: 0x000125C8 File Offset: 0x000115C8
		public void SetData(byte[] data, int index, int count)
		{
			using (MemoryStream memoryStream = new MemoryStream(data, index, count, false))
			{
				using (ZipHelperStream zipHelperStream = new ZipHelperStream(memoryStream))
				{
					this._flags = (ExtendedUnixData.Flags)zipHelperStream.ReadByte();
					if ((byte)(this._flags & ExtendedUnixData.Flags.ModificationTime) != 0 && count >= 5)
					{
						int num = zipHelperStream.ReadLEInt();
						this._modificationTime = (new DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime() + new TimeSpan(0, 0, 0, num, 0)).ToLocalTime();
					}
					if ((byte)(this._flags & ExtendedUnixData.Flags.AccessTime) != 0)
					{
						int num2 = zipHelperStream.ReadLEInt();
						this._lastAccessTime = (new DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime() + new TimeSpan(0, 0, 0, num2, 0)).ToLocalTime();
					}
					if ((byte)(this._flags & ExtendedUnixData.Flags.CreateTime) != 0)
					{
						int num3 = zipHelperStream.ReadLEInt();
						this._createTime = (new DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime() + new TimeSpan(0, 0, 0, num3, 0)).ToLocalTime();
					}
				}
			}
		}

		// Token: 0x0600038F RID: 911 RVA: 0x00012720 File Offset: 0x00011720
		public byte[] GetData()
		{
			byte[] array;
			using (MemoryStream memoryStream = new MemoryStream())
			{
				using (ZipHelperStream zipHelperStream = new ZipHelperStream(memoryStream))
				{
					zipHelperStream.IsStreamOwner = false;
					zipHelperStream.WriteByte((byte)this._flags);
					if ((byte)(this._flags & ExtendedUnixData.Flags.ModificationTime) != 0)
					{
						int num = (int)(this._modificationTime.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime()).TotalSeconds;
						zipHelperStream.WriteLEInt(num);
					}
					if ((byte)(this._flags & ExtendedUnixData.Flags.AccessTime) != 0)
					{
						int num2 = (int)(this._lastAccessTime.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime()).TotalSeconds;
						zipHelperStream.WriteLEInt(num2);
					}
					if ((byte)(this._flags & ExtendedUnixData.Flags.CreateTime) != 0)
					{
						int num3 = (int)(this._createTime.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0).ToUniversalTime()).TotalSeconds;
						zipHelperStream.WriteLEInt(num3);
					}
					array = memoryStream.ToArray();
				}
			}
			return array;
		}

		// Token: 0x06000390 RID: 912 RVA: 0x00012874 File Offset: 0x00011874
		public static bool IsValidValue(DateTime value)
		{
			return value >= new DateTime(1901, 12, 13, 20, 45, 52) || value <= new DateTime(2038, 1, 19, 3, 14, 7);
		}

		// Token: 0x170000D3 RID: 211
		// (get) Token: 0x06000391 RID: 913 RVA: 0x000128AB File Offset: 0x000118AB
		// (set) Token: 0x06000392 RID: 914 RVA: 0x000128B3 File Offset: 0x000118B3
		public DateTime ModificationTime
		{
			get
			{
				return this._modificationTime;
			}
			set
			{
				if (!ExtendedUnixData.IsValidValue(value))
				{
					throw new ArgumentOutOfRangeException("value");
				}
				this._flags |= ExtendedUnixData.Flags.ModificationTime;
				this._modificationTime = value;
			}
		}

		// Token: 0x170000D4 RID: 212
		// (get) Token: 0x06000393 RID: 915 RVA: 0x000128DE File Offset: 0x000118DE
		// (set) Token: 0x06000394 RID: 916 RVA: 0x000128E6 File Offset: 0x000118E6
		public DateTime AccessTime
		{
			get
			{
				return this._lastAccessTime;
			}
			set
			{
				if (!ExtendedUnixData.IsValidValue(value))
				{
					throw new ArgumentOutOfRangeException("value");
				}
				this._flags |= ExtendedUnixData.Flags.AccessTime;
				this._lastAccessTime = value;
			}
		}

		// Token: 0x170000D5 RID: 213
		// (get) Token: 0x06000395 RID: 917 RVA: 0x00012911 File Offset: 0x00011911
		// (set) Token: 0x06000396 RID: 918 RVA: 0x00012919 File Offset: 0x00011919
		public DateTime CreateTime
		{
			get
			{
				return this._createTime;
			}
			set
			{
				if (!ExtendedUnixData.IsValidValue(value))
				{
					throw new ArgumentOutOfRangeException("value");
				}
				this._flags |= ExtendedUnixData.Flags.CreateTime;
				this._createTime = value;
			}
		}

		// Token: 0x170000D6 RID: 214
		// (get) Token: 0x06000397 RID: 919 RVA: 0x00012944 File Offset: 0x00011944
		// (set) Token: 0x06000398 RID: 920 RVA: 0x0001294C File Offset: 0x0001194C
		private ExtendedUnixData.Flags Include
		{
			get
			{
				return this._flags;
			}
			set
			{
				this._flags = value;
			}
		}

		// Token: 0x040002B0 RID: 688
		private ExtendedUnixData.Flags _flags;

		// Token: 0x040002B1 RID: 689
		private DateTime _modificationTime = new DateTime(1970, 1, 1);

		// Token: 0x040002B2 RID: 690
		private DateTime _lastAccessTime = new DateTime(1970, 1, 1);

		// Token: 0x040002B3 RID: 691
		private DateTime _createTime = new DateTime(1970, 1, 1);

		// Token: 0x0200005E RID: 94
		[Flags]
		public enum Flags : byte
		{
			// Token: 0x040002B5 RID: 693
			ModificationTime = 1,
			// Token: 0x040002B6 RID: 694
			AccessTime = 2,
			// Token: 0x040002B7 RID: 695
			CreateTime = 4
		}
	}
}