void color_to_stream()

in src/include/doctest.h [4122:4194]
63 lines of code
33 McCabe index (conditional complexity)

    void color_to_stream(std::ostream& s, Color::Enum code) {
        static_cast<void>(s);    // for DOCTEST_CONFIG_COLORS_NONE or DOCTEST_CONFIG_COLORS_WINDOWS
        static_cast<void>(code); // for DOCTEST_CONFIG_COLORS_NONE
#ifdef DOCTEST_CONFIG_COLORS_ANSI
        if(g_no_colors ||
           (isatty(STDOUT_FILENO) == false && getContextOptions()->force_colors == false))
            return;

        auto col = "";
        // clang-format off
            switch(code) { //!OCLINT missing break in switch statement / unnecessary default statement in covered switch statement
                case Color::Red:         col = "[0;31m"; break;
                case Color::Green:       col = "[0;32m"; break;
                case Color::Blue:        col = "[0;34m"; break;
                case Color::Cyan:        col = "[0;36m"; break;
                case Color::Yellow:      col = "[0;33m"; break;
                case Color::Grey:        col = "[1;30m"; break;
                case Color::LightGrey:   col = "[0;37m"; break;
                case Color::BrightRed:   col = "[1;31m"; break;
                case Color::BrightGreen: col = "[1;32m"; break;
                case Color::BrightWhite: col = "[1;37m"; break;
                case Color::Bright: // invalid
                case Color::None:
                case Color::White:
                default:                 col = "[0m";
            }
        // clang-format on
        s << "\033" << col;
#endif // DOCTEST_CONFIG_COLORS_ANSI

#ifdef DOCTEST_CONFIG_COLORS_WINDOWS
        if(g_no_colors ||
           (_isatty(_fileno(stdout)) == false && getContextOptions()->force_colors == false))
            return;

        static struct ConsoleHelper {
            HANDLE stdoutHandle;
            WORD   origFgAttrs;
            WORD   origBgAttrs;

            ConsoleHelper() {
                stdoutHandle = GetStdHandle(STD_OUTPUT_HANDLE);
                CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
                GetConsoleScreenBufferInfo(stdoutHandle, &csbiInfo);
                origFgAttrs = csbiInfo.wAttributes & ~(BACKGROUND_GREEN | BACKGROUND_RED |
                    BACKGROUND_BLUE | BACKGROUND_INTENSITY);
                origBgAttrs = csbiInfo.wAttributes & ~(FOREGROUND_GREEN | FOREGROUND_RED |
                    FOREGROUND_BLUE | FOREGROUND_INTENSITY);
            }
        } ch;

#define DOCTEST_SET_ATTR(x) SetConsoleTextAttribute(ch.stdoutHandle, x | ch.origBgAttrs)

        // clang-format off
        switch (code) {
            case Color::White:       DOCTEST_SET_ATTR(FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE); break;
            case Color::Red:         DOCTEST_SET_ATTR(FOREGROUND_RED);                                      break;
            case Color::Green:       DOCTEST_SET_ATTR(FOREGROUND_GREEN);                                    break;
            case Color::Blue:        DOCTEST_SET_ATTR(FOREGROUND_BLUE);                                     break;
            case Color::Cyan:        DOCTEST_SET_ATTR(FOREGROUND_BLUE | FOREGROUND_GREEN);                  break;
            case Color::Yellow:      DOCTEST_SET_ATTR(FOREGROUND_RED | FOREGROUND_GREEN);                   break;
            case Color::Grey:        DOCTEST_SET_ATTR(0);                                                   break;
            case Color::LightGrey:   DOCTEST_SET_ATTR(FOREGROUND_INTENSITY);                                break;
            case Color::BrightRed:   DOCTEST_SET_ATTR(FOREGROUND_INTENSITY | FOREGROUND_RED);               break;
            case Color::BrightGreen: DOCTEST_SET_ATTR(FOREGROUND_INTENSITY | FOREGROUND_GREEN);             break;
            case Color::BrightWhite: DOCTEST_SET_ATTR(FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE); break;
            case Color::None:
            case Color::Bright: // invalid
            default:                 DOCTEST_SET_ATTR(ch.origFgAttrs);
        }
            // clang-format on
#endif // DOCTEST_CONFIG_COLORS_WINDOWS
    }