Function StringToBool

include/armnn/utility/StringUtils.hpp:129–160

Converts a string to bool. Accepts "true", "false" (case-insensitive) and numbers, 1 (true) or 0 (false). \param s String to convert to bool \param throw_on_error Bool variable to suppress error if conversion failed (Will return false in that case) \return bool value

/// \return bool value
///
inline bool StringToBool(const std::string& s, bool throw_on_error = true)
{
    // in case of failure to convert returns false
    auto result = false;

    // isstringstream fails if parsing didn't work
    std::istringstream is(s);

    // try integer conversion first. For the case s is a number
    is >> result;

    if (is.fail())
    {
        // transform to lower case to make case-insensitive
        std::string s_lower = s;
        std::transform(s_lower.begin(),
                       s_lower.end(),
                       s_lower.begin(),
                       [](unsigned char c){ return std::tolower(c); });
        is.str(s_lower);
        // try boolean -> s="false" or "true"
        is.clear();
        is >> std::boolalpha >> result;
    }

    if (is.fail() && throw_on_error)
    {
        throw armnn::InvalidArgumentException(s + " is not convertable to bool");
    }

    return result;
}

} // namespace stringUtils