C++

Compress and Decompress a String

See more Compression Examples

Demonstrates how to compress and decompress a string. C++

#include <CkStringBuilder.h>
#include <CkCompression.h>
#include <CkByteData.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  This example assumes the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkStringBuilder sb;

    int i;
    for (i = 1; i <= 20; i++) {
        sb.Append("This is the original uncompressed string.\r\n");
    }

    CkCompression compress;
    compress.put_Algorithm("deflate");
    //  Indicate that the utf-8 byte representation of the string should be compressed.
    compress.put_Charset("utf-8");

    CkByteData compressedBytes;
    success = compress.CompressString(sb.getAsString(),compressedBytes);

    //  If the compressed data is desired in string format, then get the base64 representation of the bytes.
    compress.put_EncodingMode("base64");
    const char *compressedBase64 = compress.compressStringENC(sb.getAsString());
    std::cout << "Compressed Bytes as Base64: " << compressedBase64 << "\r\n";

    //  Now decompress...
    const char *decompressedString = compress.decompressString(compressedBytes);
    std::cout << "The original string after decompressing from binary compressed data:" << "\r\n";
    std::cout << decompressedString << "\r\n";

    //  To decompress from Base64...
    compress.put_EncodingMode("base64");
    decompressedString = compress.decompressStringENC(compressedBase64);
    std::cout << "The original string after decompressing from Base64:" << "\r\n";
    std::cout << decompressedString << "\r\n";
    }