private static Set parse()

in core/src/main/java/org/apache/ftpserver/impl/PassivePorts.java [74:118]

32 lines of code
9 McCabe index (conditional complexity)


    private static Set<Integer> parse(final String portsString) {
        Set<Integer> passivePortsList = new HashSet<>();

        boolean inRange = false;
        Integer lastPort = Integer.valueOf(1);
        StringTokenizer st = new StringTokenizer(portsString, ",;-", true);
        while (st.hasMoreTokens()) {
            String token = st.nextToken().trim();

            if (",".equals(token) || ";".equals(token)) {
                if (inRange) {
                    fillRange(passivePortsList, lastPort, MAX_PORT_INTEGER);
                }

                // reset state
                lastPort = Integer.valueOf(1);
                inRange = false;
            } else if ("-".equals(token)) {
                inRange = true;
            } else if (token.length() == 0) {
                // ignore whitespace
            } else {
                Integer port = Integer.valueOf(token);

                verifyPort(port);

                if (inRange) {
                    // add all numbers from last int
                    fillRange(passivePortsList, lastPort, port);

                    inRange = false;
                }

                addPort(passivePortsList, port);

                lastPort = port;
            }
        }

        if (inRange) {
            fillRange(passivePortsList, lastPort, MAX_PORT_INTEGER);
        }

        return passivePortsList;
    }