int fdt_path_offset_namelen()

in EmbeddedPkg/Library/FdtLib/fdt_ro.c [183:226]

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

int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
{
	const char *end = path + namelen;
	const char *p = path;
	int offset = 0;

	FDT_CHECK_HEADER(fdt);

	/* see if we have an alias */
	if (*path != '/') {
		const char *q = memchr(path, '/', end - p);

		if (!q)
			q = end;

		p = fdt_get_alias_namelen(fdt, p, q - p);
		if (!p)
			return -FDT_ERR_BADPATH;
		offset = fdt_path_offset(fdt, p);

		p = q;
	}

	while (p < end) {
		const char *q;

		while (*p == '/') {
			p++;
			if (p == end)
				return offset;
		}
		q = memchr(p, '/', end - p);
		if (! q)
			q = end;

		offset = fdt_subnode_offset_namelen(fdt, offset, p, q-p);
		if (offset < 0)
			return offset;

		p = q;
	}

	return offset;
}