private int getReply()

in src/main/java/org/apache/commons/net/ftp/FTP.java [559:627]
49 lines of code
15 McCabe index (conditional complexity)

    private int getReply(final boolean reportReply) throws IOException {
        final int length;

        _newReplyString = true;
        _replyLines.clear();

        String line = _controlInput_.readLine();

        if (line == null) {
            throw new FTPConnectionClosedException("Connection closed without indication.");
        }

        // In case we run into an anomaly we don't want fatal index exceptions
        // to be thrown.
        length = line.length();
        if (length < REPLY_CODE_LEN) {
            throw new MalformedServerReplyException("Truncated server reply: " + line);
        }

        String code;
        try {
            code = line.substring(0, REPLY_CODE_LEN);
            _replyCode = Integer.parseInt(code);
        } catch (final NumberFormatException e) {
            throw new MalformedServerReplyException("Could not parse response code.\nServer Reply: " + line);
        }

        _replyLines.add(line);

        // Check the server reply type
        if (length > REPLY_CODE_LEN) {
            final char sep = line.charAt(REPLY_CODE_LEN);
            // Get extra lines if message continues.
            if (sep == '-') {
                do {
                    line = _controlInput_.readLine();

                    if (line == null) {
                        throw new FTPConnectionClosedException("Connection closed without indication.");
                    }

                    _replyLines.add(line);

                    // The length() check handles problems that could arise from readLine()
                    // returning too soon after encountering a naked CR or some other
                    // anomaly.
                } while (isStrictMultilineParsing() ? strictCheck(line, code) : lenientCheck(line));

            } else if (isStrictReplyParsing()) {
                if (length == REPLY_CODE_LEN + 1) { // expecting some text
                    throw new MalformedServerReplyException("Truncated server reply: '" + line + "'");
                }
                if (sep != ' ') {
                    throw new MalformedServerReplyException("Invalid server reply: '" + line + "'");
                }
            }
        } else if (isStrictReplyParsing()) {
            throw new MalformedServerReplyException("Truncated server reply: '" + line + "'");
        }

        if (reportReply) {
            fireReplyReceived(_replyCode, getReplyString());
        }

        if (_replyCode == FTPReply.SERVICE_NOT_AVAILABLE) {
            throw new FTPConnectionClosedException("FTP response 421 received.  Server closed connection.");
        }
        return _replyCode;
    }