(C#) Replacment for Deprecated Crypt2 Compress Functions

The Chilkat Crypt2 compression functions are deprecated and will be removed. This example shows how to duplicate the functionality using the Chilkat Compression class.

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Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

// Create data to be compressed.
Chilkat.StringBuilder sb = new Chilkat.StringBuilder();
int i = 0;
while (i < 25) {
    sb.Append("Hello World, this is a test.\r\n");
    i = i + 1;
}

// Bzip2 compress the utf-8 byte representation of the string and return the compressed data as base64.
crypt.Charset = "utf-8";
crypt.EncodingMode = "base64";
string compressedStr = crypt.CompressStringENC(sb.GetAsString());

Debug.WriteLine(compressedStr);

// Result: 4aeUs+4CAABCWmgzMUFZJlNZZ6znBgAAfNeAABJABQBAAIAmZJwAIABwUNNMAAUqoekYjMp4ixF1FlFxF8i5i1FvFwizF9iwi9RdxaizF7RZi6i0ixF3Fui/i7kinChIM9ZzgwA=

// The result contains an 8-byte header composed of a 4-byte magic number (0xB394A7E1) and a 4-byte length.
// Do the following to BZip2 decompress using Chilkat Compression
Chilkat.BinData bd = new Chilkat.BinData();
bd.AppendEncoded(compressedStr,"base64");

// Remove the 8-byte header.
bd.RemoveChunk(0,8);

// Decompress
Chilkat.Compression compress = new Chilkat.Compression();
compress.Algorithm = "bzip2";
compress.DecompressBd(bd);

// Get the decompressed string.
string decompressedStr = bd.GetString("utf-8");
Debug.WriteLine(decompressedStr);