Function EmitHex

tools/rescompiler/main.cpp:28–57

using namespace NResource;

static inline void EmitHex(IOutputStream& stream, const TString& view) {
    const unsigned char* data = reinterpret_cast<const unsigned char*>(view.data());
    size_t len = view.size();

    constexpr size_t CHAR2HEX = 5; // len('0x??,') == 5
    constexpr size_t MAX_STEP = 16;
    constexpr size_t STEPS[] = {MAX_STEP, 1};

    auto print = [](char* out, const unsigned char* iter, const unsigned char* end) {
        char templ[CHAR2HEX + 1] = "0x??,";
        while (iter != end) {
            HexEncode(iter, 1ULL, templ + 2ULL);
            memcpy(out, templ, CHAR2HEX);
            iter++;
            out += CHAR2HEX;
        }
    };

    char buf[CHAR2HEX * MAX_STEP + 4] = {};
    for (size_t step : STEPS) {
        while (len >= step) {
            print(buf, data, data + step);
            buf[CHAR2HEX * step] = 0;
            len -= step;
            data += step;
            stream << buf << (step > 1 ? "\n" : "");
        }
    }
    stream << '\n';
}

static inline void EmitHexArray(const TString& data, const TString& varName, IOutputStream& out) {
    const TString c = Compress(data);