public boolean isValidInet4Address()

in src/main/java/org/apache/commons/validator/routines/InetAddressValidator.java [87:120]

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

    public boolean isValidInet4Address(final String inet4Address) {
        // verify that address conforms to generic IPv4 format
        final String[] groups = ipv4Validator.match(inet4Address);

        if (groups == null) {
            return false;
        }

        // verify that address subgroups are legal
        for (final String ipSegment : groups) {
            if (ipSegment == null || ipSegment.isEmpty()) {
                return false;
            }

            int iIpSegment = 0;

            try {
                iIpSegment = Integer.parseInt(ipSegment);
            } catch (final NumberFormatException e) {
                return false;
            }

            if (iIpSegment > IPV4_MAX_OCTET_VALUE) {
                return false;
            }

            if (ipSegment.length() > 1 && ipSegment.startsWith("0")) {
                return false;
            }

        }

        return true;
    }