Method toHexString

JUCE/modules/juce_core/text/juce_String.cpp:1934–1960

String String::createHex (uint64 n)   { return hexToString (n); }

String String::toHexString (const void* const d, const int size, const int groupSize)
{
    if (size <= 0)
        return {};

    int numChars = (size * 2) + 2;
    if (groupSize > 0)
        numChars += size / groupSize;

    String s (PreallocationBytes ((size_t) numChars * sizeof (CharPointerType::CharType)));

    auto* data = static_cast<const unsigned char*> (d);
    auto dest = s.text;

    for (int i = 0; i < size; ++i)
    {
        const unsigned char nextByte = *data++;
        dest.write ((juce_wchar) hexDigits [nextByte >> 4]);
        dest.write ((juce_wchar) hexDigits [nextByte & 0xf]);

        if (groupSize > 0 && (i % groupSize) == (groupSize - 1) && i < (size - 1))
            dest.write ((juce_wchar) ' ');
    }

    dest.writeNull();
    return s;
}

int   String::getHexValue32() const noexcept    { return CharacterFunctions::HexParser<int>  ::parse (text); }
int64 String::getHexValue64() const noexcept    { return CharacterFunctions::HexParser<int64>::parse (text); }