String Compress in C# and Decompress in Javascript

Question

User-1160646140 posted

 I am Compressing string using below code in C#.

public static string Compress(string text)
{
    byte[] buffer = Encoding.UTF8.GetBytes(text);
    MemoryStream ms = new MemoryStream();
    using (GZipStream zip = new GZipStream(ms, CompressionMode.Compress, true))
    {
        zip.Write(buffer, 0, buffer.Length);
    }

    ms.Position = 0;
    MemoryStream outStream = new MemoryStream();

    byte[] compressed = new byte[ms.Length];
    ms.Read(compressed, 0, compressed.Length);

    byte[] gzBuffer = new byte[compressed.Length + 4];
    System.Buffer.BlockCopy(compressed, 0, gzBuffer, 4, compressed.Length);
    System.Buffer.BlockCopy(BitConverter.GetBytes(buffer.Length), 0, gzBuffer, 0, 4);
    return Convert.ToBase64String(gzBuffer);
}

But Same String I want to Decompress in Javascript.

Can anyone help me to how decompress String in Javascript?

Answer 1

User765422875 posted

You can use pako which is a port of zlib.

https://github.com/nodeca/pako

or zlib

https://github.com/imaya/zlib.js/blob/master/README.en.md

Answer 2

User-707554951 posted

Hi YannFreitas,
You can solve your problem by zlib . the code as below:

var base64Data = "eJztwTEBAAAAwqD1T20JT6AAAHgaCWAAAQ==";
var compressData = atob(base64Data);
var compressData = compressData.split('').map(function(e) {
    return e.charCodeAt(0);
});
var inflate = new Zlib.Inflate(compressData);
var output = inflate.decompress();

Best regards
Cathy