(Unicode C) Compress Text Feed to Binary

This example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed binary data.

The purpose is to demonstrate the BeginCompressString, MoreCompressString, and EndCompressString methods.

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#include <C_CkBinDataW.h>
#include <C_CkByteData.h>
#include <C_CkCompressionW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkBinDataW compressedData;
    HCkByteData compressedBytes;
    HCkCompressionW compress;
    HCkStringBuilderW sbIndex;
    int i;
    const wchar_t *originalText;

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

    compressedData = CkBinDataW_Create();
    compressedBytes = CkByteData_Create();

    compress = CkCompressionW_Create();
    CkCompressionW_putAlgorithm(compress,L"deflate");
    CkCompressionW_putCharset(compress,L"utf-8");

    sbIndex = CkStringBuilderW_Create();

    for (i = 0; i <= 24; i++) {
        // Note: It is possible (and normal) for a BeginCompress* or MoreCompress* method to return
        // an empty string (or 0 bytes).  When this happens, the input data is not lost.  It will be flushed
        // in a subsequent call.
        CkStringBuilderW_Clear(sbIndex);
        CkStringBuilderW_AppendInt(sbIndex,i);
        if (i == 0) {
            success = CkCompressionW_BeginCompressString(compress,CkStringBuilderW_getAsString(sbIndex),compressedBytes);
        }
        else {
            success = CkCompressionW_MoreCompressString(compress,CkStringBuilderW_getAsString(sbIndex),compressedBytes);
        }

        CkBinDataW_AppendBinary(compressedData,compressedBytes);
        success = CkCompressionW_MoreCompressString(compress,L": This is a line of data to be compressed...\r\n",compressedBytes);
        CkBinDataW_AppendBinary(compressedData,compressedBytes);
    }

    // Flush any remaining output.
    success = CkCompressionW_EndCompressString(compress,compressedBytes);
    CkBinDataW_AppendBinary(compressedData,compressedBytes);

    // Show the compressed data in hex format:
    wprintf(L"The hex encoded compressed text:\n");
    wprintf(L"%s\n",CkBinDataW_getEncoded(compressedData,L"hex"));

    // Now decompress in one call:
    success = CkBinDataW_GetBinary(compressedData,compressedBytes);
    originalText = CkCompressionW_decompressString(compress,compressedBytes);
    wprintf(L"%s\n",originalText);


    CkBinDataW_Dispose(compressedData);
    CkByteData_Dispose(compressedBytes);
    CkCompressionW_Dispose(compress);
    CkStringBuilderW_Dispose(sbIndex);

    }