C

Compress Text from StringBuilder to Gzip (BinData Output)

See more Gzip Examples

This example demonstrates how to use the CompressSb method to compress text stored in a StringBuilder into Gzip format.

The text is first converted to its byte representation using the specified character set (in this case, UTF-8). These bytes are then compressed, and the resulting Gzip data is written to a BinData object in memory.

This approach is useful when working with dynamically generated text that you want to compress without first writing it to a file. The example also shows how the compressed data can optionally be saved to a .gz file.

C

#include <C_CkGzip.h>
#include <C_CkStringBuilder.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkGzip gzip;
    HCkStringBuilder sb;
    HCkBinData bd;

    success = FALSE;

    // This example demonstrates how to compress text contained in a StringBuilder
    // into Gzip format, storing the compressed result in a BinData object.

    gzip = CkGzip_Create();
    sb = CkStringBuilder_Create();
    bd = CkBinData_Create();

    // Add some text to the StringBuilder:
    CkStringBuilder_Append(sb,"The quick brown fox jumps over the lazy dog.");

    // Compress the text using UTF-8 encoding:
    success = CkGzip_CompressSb(gzip,sb,"utf-8",bd);
    if (success == FALSE) {
        printf("%s\n",CkGzip_lastErrorText(gzip));
        CkGzip_Dispose(gzip);
        CkStringBuilder_Dispose(sb);
        CkBinData_Dispose(bd);
        return;
    }

    // The BinData now contains the Gzip-compressed bytes.
    printf("Compression successful.\n");
    printf("Compressed size (bytes): %d\n",CkBinData_getNumBytes(bd));

    // (Optional) Save to a .gz file:
    success = CkBinData_WriteFile(bd,"text.gz");
    if (success == FALSE) {
        printf("%s\n",CkBinData_lastErrorText(bd));
        CkGzip_Dispose(gzip);
        CkStringBuilder_Dispose(sb);
        CkBinData_Dispose(bd);
        return;
    }

    printf("Gzip file written to text.gz\n");


    CkGzip_Dispose(gzip);
    CkStringBuilder_Dispose(sb);
    CkBinData_Dispose(bd);

    }