static u8 input_name2mask()

in panel.c [1377:1425]

• 43 lines of code
• 9 McCabe index (conditional complexity)

static u8 input_name2mask(const char *name, __u64 *mask, __u64 *value,
			  u8 *imask, u8 *omask)
{
	const char sigtab[] = "EeSsPpAaBb";
	u8 im, om;
	__u64 m, v;

	om = 0;
	im = 0;
	m = 0ULL;
	v = 0ULL;
	while (*name) {
		int in, out, bit, neg;
		const char *idx;

		idx = strchr(sigtab, *name);
		if (!idx)
			return 0;	/* input name not found */

		in = idx - sigtab;
		neg = (in & 1);	/* odd (lower) names are negated */
		in >>= 1;
		im |= BIT(in);

		name++;
		if (*name >= '0' && *name <= '7') {
			out = *name - '0';
			om |= BIT(out);
		} else if (*name == '-') {
			out = 8;
		} else {
			return 0;	/* unknown bit name */
		}

		bit = (out * 5) + in;

		m |= 1ULL << bit;
		if (!neg)
			v |= 1ULL << bit;
		name++;
	}
	*mask = m;
	*value = v;
	if (imask)
		*imask |= im;
	if (omask)
		*omask |= om;
	return 1;
}