Function utf8AppendCodepoint

lib/Utf8/Utf8.cpp:127–143

}

void utf8AppendCodepoint(uint32_t cp, std::string& out) {
  if (cp < 0x80) {
    out += static_cast<char>(cp);
  } else if (cp < 0x800) {
    out += static_cast<char>(0xC0 | (cp >> 6));
    out += static_cast<char>(0x80 | (cp & 0x3F));
  } else if (cp < 0x10000) {
    out += static_cast<char>(0xE0 | (cp >> 12));
    out += static_cast<char>(0x80 | ((cp >> 6) & 0x3F));
    out += static_cast<char>(0x80 | (cp & 0x3F));
  } else {
    out += static_cast<char>(0xF0 | (cp >> 18));
    out += static_cast<char>(0x80 | ((cp >> 12) & 0x3F));
    out += static_cast<char>(0x80 | ((cp >> 6) & 0x3F));
    out += static_cast<char>(0x80 | (cp & 0x3F));
  }
}

int utf8SafeTruncateBuffer(const char* buf, int len) {
  if (len <= 0) return 0;