wpa_ssid_convert_utf8

wpa_ssid_convert_utf8.cc

unsigned char HexNumber(char c) {
  if (c >= '0' && c <= '9') {
    return c - '0';
  } else if (c >= 'a' && c <= 'f') {
    return c - 'a' + 10;
  } else if (c >= 'A' && c <= 'F') {
    return c - 'A' + 10;
  } else {
    return 0;
  }
}

std::string WifiSsidConvertUtf8(const std::string &raw) {
  std::string result;
  for (auto i = 0; i < raw.length(); ++i) {
    if ((raw[i] == '\\') && (i + 3 < raw.length()) && (raw[i + 1] == 'x')) {
      unsigned char num = HexNumber(raw[i + 2]) * 16 + HexNumber(raw[i + 3]);
      if (num) {
        result += num;
        i += 3;
        continue;
      }
    }
    result += raw[i];
  }
  return result;
}

TEST(t, t) {
  std::string wpa_ssid = R"(Huawei-\xe6\xb5\x8b\xe8\xaf\x95)";
  std::cout << wpa_ssid << std::endl;
  auto res = WifiSsidConvertUtf8(wpa_ssid);
  std::cout << res << std::endl;
  EXPECT_EQ(res, "Huawei-测试");
}