Function ParseColors

cli.cpp:234–313

};

bool ParseColors(std::string colors_string, DeviceOptions *options)
{
    while (colors_string.length() > 0)
    {
        size_t    rgb_end = colors_string.find_first_of(',');
        std::string color = colors_string.substr(0, rgb_end);
        int32_t rgb = 0;

        bool parsed = false;

        if (color.length() <= 0)
            break;

        /*-----------------------------------------------------------------*\
        | This will set correct colour mode for modes with a                |
        |   MODE_COLORS_RANDOM else generate a random colour from the       |
        |   human_colors list above                                         |
        \*-----------------------------------------------------------------*/
        if (color == "random")
        {
            options->random_colors = true;
            srand((unsigned int)time(NULL));
            int index = rand() % (sizeof(human_colors) / sizeof(human_colors[0])) + 1; //Anything other than black
            rgb = human_colors[index].rgb;
            parsed = true;
        }
        else
        {
            /* swy: (A) try interpreting it as text; as human keywords, otherwise strtoul() will pick up 'darkgreen' as 0xDA */
            for (const struct HumanColors *hc = human_colors; hc->keyword != NULL; hc++)
            {
                if (strcasecmp(hc->keyword, color.c_str()) != 0)
                    continue;

                rgb = hc->rgb; parsed = true;

                break;
            }
        }

        /* swy: (B) no luck, try interpreting it as an hexadecimal number instead */
        if (!parsed)
        {
            if (color.length() == 6)
            {
                const char *colorptr = color.c_str(); char *endptr = NULL;

                rgb = strtoul(colorptr, &endptr, 16);

                /* swy: check that strtoul() has advanced the read pointer until the end (NULL terminator);
                        that means it has read the whole thing */
                if (colorptr != endptr && endptr && *endptr == '\0')
                    parsed = true;
            }
        }

        /* swy: we got it, save the 32-bit integer as a tuple of three RGB bytes */
        if (parsed)