private static Dictionary readDictionary()

in src/main/java/org/apache/sling/installer/core/impl/InternalResource.java [227:296]
63 lines of code
11 McCabe index (conditional complexity)

    private static Dictionary<String, Object> readDictionary(
            final InputStream is, final String scheme, final String id)
    throws IOException {
        if ( id.endsWith(".cfg.json") ) {
            String configId;
            int pos = id.lastIndexOf('/');
            if ( pos == -1 ) {
                configId = id;
            } else {
                configId = id.substring(pos + 1);
            }
            pos = configId.indexOf('-');
            if ( pos != -1 ) {
                configId = configId.substring(0, pos).concat("~").concat(configId.substring(pos+1));
            }
            configId = removeConfigExtension(configId);

            // read from input stream
            try(final Reader reader =  new InputStreamReader(is, "UTF-8")) {
                return Configurations.buildReader()
                        .withIdentifier(configId).build(reader).readConfiguration();

            }

        } else {
            final Hashtable<String, Object> ht = new Hashtable<>();

            try (final BufferedInputStream in = new BufferedInputStream(is)) {

                if (id.endsWith(".config") ) {
                    // check for initial comment line
                    in.mark(256);
                    final int firstChar = in.read();
                    if ( firstChar == '#' ) {
                        int b;
                        while ((b = in.read()) != '\n' ) {
                            if ( b == -1 ) {
                                throw new IOException("Unable to read configuration.");
                            }
                        }
                    } else {
                        in.reset();
                    }
                    @SuppressWarnings("unchecked")
                    final Dictionary<String, Object> config = ConfigurationHandler.read(in);
                    final Enumeration<String> i = config.keys();
                    while ( i.hasMoreElements() ) {
                        final String key = i.nextElement();
                        ht.put(key, config.get(key));
                    }
                } else {
                    final Properties p = new Properties();
                    in.mark(1);
                    boolean isXml = in.read() == '<';
                    in.reset();
                    if (isXml) {
                        p.loadFromXML(in);
                    } else {
                        p.load(in);
                    }
                    final Enumeration<Object> i = p.keys();
                    while ( i.hasMoreElements() ) {
                        final Object key = i.nextElement();
                        ht.put(key.toString(), p.get(key));
                    }
                }
            }
            return ht;
        }
    }