public static MailConnectionConfiguration configure()

in bindings/servicemix-mail/src/main/java/org/apache/servicemix/mail/utils/MailUtils.java [130:200]
55 lines of code
17 McCabe index (conditional complexity)

    public static MailConnectionConfiguration configure(String uriString) throws ParseException {
        MailConnectionConfiguration config = new MailConnectionConfiguration();

        if (uriString == null || uriString.length() <= 0) {
            throw new ParseException("The given connection uri (" + uriString + ") is invalid.");
        }

        URI uri = URI.create(uriString);

        String value = uri.getHost();
        if (value != null) {
            config.setHost(value);
        }

        String scheme = uri.getScheme();
        if (scheme != null) {
            config.setProtocol(scheme);
        } else {
            // set smtp as default
            config.setProtocol(PROTOCOL_SMTP);
        }

        String userInfo = uri.getUserInfo();
        if (userInfo != null) {
            config.setUsername(userInfo);
        }

        int port = uri.getPort();
        if (port >= 0) {
            config.setPort(port);
        } else {
            config.setPort(getDefaultPortForProtocol(config.getProtocol()));
        }

        if (uri.getPath() != null && uri.getPath().length() > 0) {
            if (uri.getPath().startsWith("/")) {
                config.setFolderName(uri.getPath().substring(1));
            } else {
                config.setFolderName(uri.getPath());
            }
        } else {
            config.setFolderName(DEFAULT_INBOX);
        }

        if (uri.getQuery() != null && uri.getQuery().indexOf(URI_PASSWORD_PART) != -1) {
            // extract the password from query
            int beginIndex = uri.getQuery().indexOf(URI_PASSWORD_PART) + URI_PASSWORD_PART.length();
            int endIndex = uri.getQuery().indexOf(';', beginIndex + 1) != -1 ? uri.getQuery()
                .indexOf(';', beginIndex + 1) : uri.getQuery().length();
            config.setPassword(uri.getQuery().substring(beginIndex, endIndex));
        } else {
            // maybe no password required
            config.setPassword("");
        }

        if (userInfo == null) { 
            // alternative way of specifying the user name
            if (uri.getQuery() != null && uri.getQuery().indexOf(URI_USER_PART) != -1) {
                // extract the password from query
                int beginIndex = uri.getQuery().indexOf(URI_USER_PART) + URI_USER_PART.length();
                int endIndex = uri.getQuery().indexOf(';', beginIndex + 1) != -1 ? uri.getQuery()
                    .indexOf(';', beginIndex + 1) : uri.getQuery().length();
                config.setUsername(uri.getQuery().substring(beginIndex, endIndex));
            } else {
                // maybe no password required
                config.setUsername("");
            }
        }

        return config;
    }