C

Ascii85 Encoding and Decoding

See more Encryption Examples

Demonstrates ascii85 encoding and decoding.

Note: Requires Chilkat v9.5.0.79 or greater.

C

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkStringBuilder sb;
    const char *encodedAscii85;
    HCkBinData bd;

    success = FALSE;

    // First demonstrate encoding strings to ascii85 and back.
    sb = CkStringBuilder_Create();

    success = CkStringBuilder_Append(sb,"Man is distinguished, not only by his reason, but by this singular passion from other animals, which is a lust of the mind, that by a perseverance of delight in the continued and indefatigable generation of knowledge, exceeds the short vehemence of any carnal pleasure.");

    encodedAscii85 = CkStringBuilder_getEncoded(sb,"ascii85","utf-8");
    printf("%s\n",encodedAscii85);

    // Result is: 9jqo^BlbD-BleB1DJ+*+F(f,q/0JhKF<GL>Cj@.4 ... DII?(E,9)oF*2M7/c

    // Decode back to the original:
    CkStringBuilder_Clear(sb);
    CkStringBuilder_Append(sb,encodedAscii85);
    success = CkStringBuilder_Decode(sb,"ascii85","utf-8");
    printf("Original:\n");
    printf("%s\n",CkStringBuilder_getAsString(sb));

    // ---- Now encode binary data to ascii85 ----
    bd = CkBinData_Create();
    success = CkBinData_LoadFile(bd,"qa_data/jpg/starfish20.jpg");
    encodedAscii85 = CkBinData_getEncoded(bd,"ascii85");
    printf("%s\n",encodedAscii85);

    // Result is:  s4IA0!"_al8O`[\!<E0k!([(is8E!F7VQ[M+Eqj?FED)3+C]U=6"Fn ...

    // Decode...
    CkBinData_Clear(bd);
    CkBinData_AppendEncoded(bd,encodedAscii85,"ascii85");
    success = CkBinData_WriteFile(bd,"qa_output/starfish20.jpg");


    CkStringBuilder_Dispose(sb);
    CkBinData_Dispose(bd);

    }