(C++) Egypt ITIDA Generate eReceipt UUID

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Demonstrates how to generate the eReceipt UUID for Egypt ITIDA.

Note: This example requires Chilkat v9.5.0.92 or greater.

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#include <CkStringBuilder.h>

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

    // Note: This example requires Chilkat v9.5.0.92 or greater.
    // (In v9.5.0.92, the "itida" encoding was added to StringBuilder's Encode method.)
    CkStringBuilder sb;

    // Load the eReceipt JSON into a StringBuilder object.
    bool success = sb.LoadFile("qa_data/itida/EReceipt_ex.json","utf-8");
    if (success == false) {
        std::cout << "Failed to load input file." << "\r\n";
        return;
    }

    // Convert the contents of sb to the ITIDA canonical form.
    // Always pass utf-8 for the 2nd arg.
    sb.Encode("itida","utf-8");

    // Get the lowercase hex encoded SHA256 hash of the canonicalized JSON
    // (always use utf-8)
    const char *uuid = sb.getHash("sha256","hex_lower","utf-8");
    std::cout << "eInvoicing UUID = " << uuid << "\r\n";
    }