protected boolean isValidSymbolicDomain()

in src/main/java/org/apache/commons/validator/EmailValidator.java [166:201]

• 30 lines of code
• 7 McCabe index (conditional complexity)

    protected boolean isValidSymbolicDomain(String domain) {
        final String[] domainSegment = new String[10]; // CHECKSTYLE IGNORE MagicNumber
        boolean match = true;
        int i = 0;
        final Matcher atomMatcher = ATOM_PATTERN.matcher(domain);
        while (match) {
            match = atomMatcher.matches();
            if (match) {
                domainSegment[i] = atomMatcher.group(1);
                final int l = domainSegment[i].length() + 1;
                domain =
                        (l >= domain.length())
                        ? ""
                        : domain.substring(l);

                i++;
            }
        }

        final int len = i;

        // Make sure there's a host name preceding the domain.
        if (len < 2) {
            return false;
        }

        final String tld = domainSegment[len - 1];
        if (tld.length() <= 1) {
            return false;
        }
        if (! TLD_PATTERN.matcher(tld).matches()) {
            return false;
        }

        return true;
    }