Function CPLBinaryToHex

port/cpl_string.cpp:2789–2814

 */

char *CPLBinaryToHex(int nBytes, const GByte *pabyData)

{
    CPLAssert(nBytes >= 0);
    char *pszHex = static_cast<char *>(
        VSI_MALLOC_VERBOSE(static_cast<size_t>(nBytes) * 2 + 1));
    if (!pszHex)
    {
        pszHex = CPLStrdup("");
        return pszHex;
    }
    pszHex[nBytes * 2] = '\0';

    constexpr char achHex[] = "0123456789ABCDEF";

    for (size_t i = 0; i < static_cast<size_t>(nBytes); ++i)
    {
        const int nLow = pabyData[i] & 0x0f;
        const int nHigh = (pabyData[i] & 0xf0) >> 4;

        pszHex[i * 2] = achHex[nHigh];
        pszHex[i * 2 + 1] = achHex[nLow];
    }

    return pszHex;
}

/************************************************************************/
/*                           CPLHexToBinary()                           */