PPMD Compress File

Demonstrates how to use the PPMD compression algorithm to compress a file. This code is capable of compressing any size file because the file data is compressed from input to output in a streaming mode. The output file does not contain any "PPMD" header -- it is purely PPMD compressed data.

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

#include <CkCompression.h>

void ChilkatSample(void)
    {
    CkCompression compress;

    //  Any string argument automatically begins a 30-day trial.
    bool success;
    success = compress.UnlockComponent("30-day trial");
    if (success != true) {
        printf("Compression component unlock failed\n");
        return;
    }

    compress.put_Algorithm("ppmd");

    success = compress.CompressFile("hamlet.xml","hamletPpmd.dat");
    if (success != true) {
        printf("%s\n",compress.lastErrorText());
        return;
    }

    //  Decompress back to the original:
    success = compress.DecompressFile("hamletPpmd.dat","hamletInflated.xml");
    if (success != true) {
        printf("%s\n",compress.lastErrorText());
        return;
    }

    printf("Success!\n");
    }