Led::Led(const char LED[], const bool INVERTED) {
M_IO = new DigitalPin(LED);
M_INVERTED = INVERTED;
set_off();
M_IO->set_output();
}
/* Processes one :set statement. Returns zero on success. */
static int
process_option(const char arg[])
{
char option[OPTION_NAME_MAX + 1];
int err;
const char *p;
opt_t *opt;
p = skip_alphas(arg);
snprintf(option, p - arg + 1, "%s", arg);
if(strcmp(option, "all") == 0)
{
print_options();
return 0;
}
opt = get_option(option);
if(opt == NULL)
{
text_buffer_addf("%s: %s", "Unknown option", arg);
return 1;
}
err = 0;
if(*p == '\0')
{
opt_t *o = find_option(option);
if(o != NULL)
{
if(o->type == OPT_BOOL)
err = set_on(opt);
else
err = set_print(o);
}
else if(strncmp(option, "no", 2) == 0)
{
err = set_off(opt);
}
else if(strncmp(option, "inv", 3) == 0)
{
err = set_inv(opt);
}
}
else if(char_is_one_of(ENDING_CHARS, *p))
{
if(*(p + 1) != '\0')
{
text_buffer_addf("%s: %s", "Trailing characters", arg);
return 1;
}
if(*p == '!')
err = set_inv(opt);
else if(*p == '?')
err = set_print(opt);
else
err = set_reset(opt);
}
else if(strncmp(p, "+=", 2) == 0)
{
err = set_add(opt, p + 2);
}
else if(strncmp(p, "-=", 2) == 0)
{
err = set_remove(opt, p + 2);
}
else if(*p == '=' || *p == ':')
{
err = set_set(opt, p + 1);
}
else
{
text_buffer_addf("%s: %s", "Trailing characters", arg);
}
if(err)
{
text_buffer_addf("%s: %s", "Invalid argument", arg);
}
return err;
}