(C) Read/Write JSON with Binary Data such as JPEG Files

Demonstrates how binary files could be stored in JSON in base64 format. Creates JSON containing the contents of a JPG file, and then reads the JSON to extract the JPEG image.

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#include <C_CkBinData.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    HCkBinData bd;
    BOOL success;
    HCkJsonObject json1;
    const char *jsonStr;
    HCkJsonObject json2;
    HCkBinData bd2;

    // First load a small JPG file..
    bd = CkBinData_Create();

    success = CkBinData_LoadFile(bd,"qa_data/jpg/starfish20.jpg");
    // Assume success, but your code should check for success..

    // Create JSON containing the binary data in base64 format.
    json1 = CkJsonObject_Create();
    CkJsonObject_UpdateBd(json1,"starfish","base64",bd);

    jsonStr = CkJsonObject_emit(json1);
    printf("%s\n",jsonStr);

    // Here's the output:
    // {"starfish":"/9j/4AAQSkZJRgA ... cN2iuLFsCEbDGxQkI6RO/n//2Q=="}

    // Let's create a new JSON object, load it with the above JSON, and extract the JPG image..
    json2 = CkJsonObject_Create();
    CkJsonObject_Load(json2,jsonStr);

    // Get the binary bytes.
    bd2 = CkBinData_Create();
    CkJsonObject_BytesOf(json2,"starfish","base64",bd2);

    // Save to a file.
    success = CkBinData_WriteFile(bd2,"qa_output/starfish20.jpg");

    printf("Success.\n");


    CkBinData_Dispose(bd);
    CkJsonObject_Dispose(json1);
    CkJsonObject_Dispose(json2);
    CkBinData_Dispose(bd2);

    }