Function get_root_path

examples/common/common.cpp:14–42

! * @brief Get the Tengine root path * @return The string of Tengine root path(e.g. "/home/user/tengine/") * @note Firstly, assume the program is under "Tengine_root/build/examples/..."; if failed, then assume the program is under "Tengine_root/examples/..."; * if failed, then assume the program is under Tengine_root; * if failed again, then return an empty string. */

*        if failed again, then return an empty string.
*/
std::string get_root_path(void)
{
    typedef std::string::size_type pos;
    char buf[1024];

    int rslt = readlink("/proc/self/exe", buf, 1023);
    if(rslt < 0 || rslt > 1023)
    {
        return std::string("");
    }
    buf[rslt] = '\0';

    std::string str = buf;
    std::cout << str << std::endl;
    pos p = str.find("build/examples/");
    if(p == std::string::npos)
    {
        p = str.find("examples/");
        if(p == std::string::npos)
        {
            p = str.find("tengine/");
            if(p == std::string::npos)
                return std::string("");
            else
                return str.substr(0, p + 8);
        }
    }
    return str.substr(0, p);
}

/*!
 * @brief Find the config file and set it to tengine