private void loadProviders()

in geronimo-mail_2.1_spec/src/main/java/jakarta/mail/Session.java [678:729]
47 lines of code
19 McCabe index (conditional complexity)

    private void loadProviders(final ProviderInfo info, final InputStream is) throws IOException {
        final BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        String line;
        while ((line = reader.readLine()) != null) {
            // Lines beginning with "#" are just comments.
            if (line.startsWith("#")) {
                continue;
            }

            final StringTokenizer tok = new StringTokenizer(line, ";");
            String protocol = null;
            Provider.Type type = null;
            String className = null;
            String vendor = null;
            String version = null;
            while (tok.hasMoreTokens()) {
                final String property = tok.nextToken();
                final int index = property.indexOf('=');
                if (index == -1) {
                    continue;
                }
                final String key = property.substring(0, index).trim().toLowerCase();
                final String value = property.substring(index+1).trim();
                if (protocol == null && "protocol".equals(key)) {
                    protocol = value;
                } else if (type == null && "type".equals(key)) {
                    if ("store".equals(value)) {
                        type = Provider.Type.STORE;
                    } else if ("transport".equals(value)) {
                        type = Provider.Type.TRANSPORT;
                    }
                } else if (className == null && "class".equals(key)) {
                    className = value;
                } else if ("vendor".equals(key)) {
                    vendor = value;
                } else if ("version".equals(key)) {
                    version = value;
                }
            }
            if (protocol == null || type == null || className == null) {
                //todo should we log a warning?
                continue;
            }

            if (debug) {
                writeDebug("DEBUG: loading new provider protocol=" + protocol + ", className=" + className + ", vendor=" + vendor + ", version=" + version);
            }
            final Provider provider = new Provider(type, protocol, className, vendor, version);
            // add to the info list.
            info.addProvider(provider);
        }
    }