Function SubstrUTF8

util/charset/utf8.cpp:126–130

}

TStringBuf SubstrUTF8(const TStringBuf str Y_LIFETIME_BOUND, size_t pos, size_t len) {
    const char* start = SkipUTF8Chars(str.begin(), str.end(), pos);
    const char* end = SkipUTF8Chars(start, str.end(), len);
    return TStringBuf(start, end - start);
}

EUTF8Detect UTF8Detect(const char* s, size_t len) {
    const unsigned char* s0 = (const unsigned char*)s;