60 lines
2 KiB
C#
60 lines
2 KiB
C#
using System;
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using System.IO;
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using System.IO.Compression;
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using System.Text;
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namespace LightReflectiveMirror.Compression
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{
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internal static class StringCompressor
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{
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/// <summary>
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/// Compresses the string.
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/// </summary>
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/// <param name="text">The text.</param>
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/// <returns></returns>
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public static string Compress(this string text)
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{
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byte[] buffer = Encoding.UTF8.GetBytes(text);
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var memoryStream = new MemoryStream();
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using (var gZipStream = new GZipStream(memoryStream, CompressionMode.Compress, true))
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{
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gZipStream.Write(buffer, 0, buffer.Length);
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}
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memoryStream.Position = 0;
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var compressedData = new byte[memoryStream.Length];
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memoryStream.Read(compressedData, 0, compressedData.Length);
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var gZipBuffer = new byte[compressedData.Length + 4];
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Buffer.BlockCopy(compressedData, 0, gZipBuffer, 4, compressedData.Length);
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Buffer.BlockCopy(BitConverter.GetBytes(buffer.Length), 0, gZipBuffer, 0, 4);
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return Convert.ToBase64String(gZipBuffer);
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}
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/// <summary>
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/// Decompresses the string.
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/// </summary>
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/// <param name="text">The compressed text.</param>
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/// <returns></returns>
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public static string Decompress(this string text)
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{
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byte[] gZipBuffer = Convert.FromBase64String(text);
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using (var memoryStream = new MemoryStream())
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{
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int dataLength = BitConverter.ToInt32(gZipBuffer, 0);
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memoryStream.Write(gZipBuffer, 4, gZipBuffer.Length - 4);
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var buffer = new byte[dataLength];
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memoryStream.Position = 0;
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using (var gZipStream = new GZipStream(memoryStream, CompressionMode.Decompress))
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{
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gZipStream.Read(buffer, 0, buffer.Length);
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}
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return Encoding.UTF8.GetString(buffer);
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}
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}
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}
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}
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