(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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#include <CkCrypt2.h>
#include <CkStringBuilder.h>
#include <CkBinData.h>
#include <CkCompression.h>

void ChilkatSample(void)
    {
    CkCrypt2 crypt;

    // Create data to be compressed.
    CkStringBuilder sb;
    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.put_Charset("utf-8");
    crypt.put_EncodingMode("base64");
    const char *compressedStr = crypt.compressStringENC(sb.getAsString());

    std::cout << compressedStr << "\r\n";

    // 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
    CkBinData bd;
    bd.AppendEncoded(compressedStr,"base64");

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

    // Decompress
    CkCompression compress;
    compress.put_Algorithm("bzip2");
    compress.DecompressBd(bd);

    // Get the decompressed string.
    const char *decompressedStr = bd.getString("utf-8");
    std::cout << decompressedStr << "\r\n";
    }