Function is_colour_terminal

src/common/utils.cpp:199–219

bool is_colour_terminal()
{
    if (getenv("NO_COLOR"))
    {
        return false;
    }

    if (!((isatty(STDOUT_FILENO) > 0)
          && (isatty(STDERR_FILENO) > 0)))
    {
        return false;
    }

    const char *term_env = getenv("TERM");
    std::string term(term_env ? term_env : "");
    if (term.empty() || term == "dump")
    {
        return false;
    }
    return getenv("COLORTERM") != 0;
}