size_t len __attribute__()

in src/apprentice.c [2280:2332]

• 52 lines of code
• 13 McCabe index (conditional complexity)

    size_t len __attribute__((__unused__)))
{
	const char *l = line;
	char *el;
	unsigned long factor;
	struct magic *m = &me->mp[0];

	if (m->factor_op != FILE_FACTOR_OP_NONE) {
		file_magwarn(ms,
		    "Current entry already has a strength type: %c %d",
		    m->factor_op, m->factor);
		return -1;
	}
	if (m->type == FILE_NAME) {
		file_magwarn(ms, "%s: Strength setting is not supported in "
		    "\"name\" magic entries", m->value.s);
		return -1;
	}
	EATAB;
	switch (*l) {
	case FILE_FACTOR_OP_NONE:
	case FILE_FACTOR_OP_PLUS:
	case FILE_FACTOR_OP_MINUS:
	case FILE_FACTOR_OP_TIMES:
	case FILE_FACTOR_OP_DIV:
		m->factor_op = *l++;
		break;
	default:
		file_magwarn(ms, "Unknown factor op `%c'", *l);
		return -1;
	}
	EATAB;
	factor = strtoul(l, &el, 0);
	if (factor > 255) {
		file_magwarn(ms, "Too large factor `%lu'", factor);
		goto out;
	}
	if (*el && !isspace(CAST(unsigned char, *el))) {
		file_magwarn(ms, "Bad factor `%s'", l);
		goto out;
	}
	m->factor = CAST(uint8_t, factor);
	if (m->factor == 0 && m->factor_op == FILE_FACTOR_OP_DIV) {
		file_magwarn(ms, "Cannot have factor op `%c' and factor %u",
		    m->factor_op, m->factor);
		goto out;
	}
	return 0;
out:
	m->factor_op = FILE_FACTOR_OP_NONE;
	m->factor = 0;
	return -1;
}