Function utf8_len

llama.cpp:121–125

//

static size_t utf8_len(char src) {
    const size_t lookup[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 4 };
    uint8_t highbits = static_cast<uint8_t>(src) >> 4;
    return lookup[highbits];
}

static void replace_all(std::string & s, const std::string & search, const std::string & replace) {
    std::string result;