Method setValue

pdal/util/ProgramArgs.hpp:404–435

Set a an argument's value from a string. Throws an arg_error exception if \a s can't be converted to the argument's type. Values must be provided for with the option name. \note Not intended to be called from user code. \param s Value to set. */

      \param s  Value to set.
    */
    virtual void setValue(const std::string& s)
    {
        if (m_set)
        {
            throw arg_val_error("Attempted to set value twice for argument '" +
                m_longname + "'.");
        }
        if (s.empty())
        {
            throw arg_val_error("Argument '" + m_longname +
                "' needs a value and none was provided.");
        }

        m_rawVal = s;
        auto status = Utils::fromString(s, m_var);
        if (!status)
        {
            std::string error(m_error);

            if (error.empty())
            {
                if (status.what().size())
                    error = "Invalid value for argument '" + m_longname +
                        "': " + status.what();
                else
                    error = "Invalid value '" + s + "' for argument '" +
                        m_longname + "'.";
            }
            throw arg_val_error(error);
        }
        m_set = true;
    }

    /**
      Reset the argument's state.