C

GZip Create / Extract .gz File

See more Gzip Examples

Demonstrates how to compress a file to create a .gz (GZip) file.

Note: The .gz file format is a compressed file format. It contains a single file. The .gz file format is not an archive format (i.e. it does not contain a collection of files/directories such as with the .zip, .rar, or .tar file formats). GZip is often combined with TAR to create a .tgz (or .tar.gz).

Note: It is possible for a .gz to contain more than one file, but this is very uncommon.

C

#include <C_CkGzip.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkGzip gzip;
    const char *xmlStr;

    success = FALSE;

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

    gzip = CkGzip_Create();

    // File-to-file GZip:
    // Compress "hamlet.xml" to create "hamlet.xml.gz"
    success = CkGzip_CompressFile(gzip,"hamlet.xml","hamlet.xml.gz");
    if (success == FALSE) {
        printf("%s\n",CkGzip_lastErrorText(gzip));
        CkGzip_Dispose(gzip);
        return;
    }

    // File-to-file ungzip
    // Decompress "hamlet.xml.gz" to create "hamletOut.xml"
    success = CkGzip_UncompressFile(gzip,"hamlet.xml.gz","hamletOut.xml");
    if (success == FALSE) {
        printf("%s\n",CkGzip_lastErrorText(gzip));
        CkGzip_Dispose(gzip);
        return;
    }

    // File-to-string ungzip
    // Decompress the contents of a .gz directly to a string variable:
    // The 2nd argument indicates the charset of the character
    // data after it is decompressed.

    xmlStr = CkGzip_uncompressFileToString(gzip,"hamlet.xml.gz","utf-8");
    if (success == FALSE) {
        printf("%s\n",CkGzip_lastErrorText(gzip));
        CkGzip_Dispose(gzip);
        return;
    }

    printf("%s\n",xmlStr);

    // The Chilkat GZip API provides much more flexibility than shown
    // here.  See the reference documentation at 
    // http://www.chilkatsoft.com/refdoc for more information


    CkGzip_Dispose(gzip);

    }