57 lines
1.3 KiB
C#
57 lines
1.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace RyzStudio.IO
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{
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public class FileType
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{
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protected static readonly byte[] BMP = { 66, 77 };
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protected static readonly byte[] GIF = { 71, 73, 70, 56 };
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protected static readonly byte[] ICO = { 0, 0, 1, 0 };
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protected static readonly byte[] JPG = { 255, 216, 255 };
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protected static readonly byte[] PNG = { 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82 };
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public static bool IsImage(byte[] byteArray)
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{
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if (byteArray == null)
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{
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return false;
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}
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if (byteArray.Length <= 0)
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{
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return false;
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}
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if (byteArray.Take(2).SequenceEqual(BMP))
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{
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return true;
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}
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if (byteArray.Take(4).SequenceEqual(GIF))
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{
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return true;
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}
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if (byteArray.Take(4).SequenceEqual(ICO))
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{
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return true;
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}
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if (byteArray.Take(3).SequenceEqual(JPG))
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{
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return true;
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}
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if (byteArray.Take(16).SequenceEqual(PNG))
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{
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return true;
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}
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return false;
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}
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}
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}
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