if (!enabled) {
            return null;
        }

        try {
            @SuppressWarnings("resource")
            final BufferedReader reader = new BufferedReader(new InputStreamReader(new BOMInputStream(stream), charsetName));

            String line;
            final RobotsTxt robotsTxt = new RobotsTxt();

        public InputStreamThread(final InputStream is, final String charset, final int maxOutputLineBuffer) {
            try {
                br = new BufferedReader(new InputStreamReader(is, charset));
            } catch (final UnsupportedEncodingException e) {
                br = new BufferedReader(new InputStreamReader(is, Constants.UTF_8_CHARSET));
            }
            maxLineBuffer = maxOutputLineBuffer;
        }

        /**

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.util;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.LinkedList;
import java.util.List;
import java.util.function.Consumer;

    }

    private String getDefaultMappings() throws IOException {
        final StringBuilder mappingSource = new StringBuilder();
        try (BufferedReader br = new BufferedReader(new InputStreamReader(
                this.getClass().getClassLoader().getResourceAsStream("suggest_indices/suggest/mappings-default.json")))) {

            String line;

        public InputStreamThread(final InputStream is, final String charset, final int maxOutputLineBuffer) {
            try {
                br = new BufferedReader(new InputStreamReader(is, charset));
            } catch (final UnsupportedEncodingException e) {
                br = new BufferedReader(new InputStreamReader(is, Constants.UTF_8_CHARSET));
            }
            maxLineBuffer = maxOutputLineBuffer;
        }

      off += len;
    }
    lineBuf.finish();
    return lines;
  }

  private static List<String> readUsingJava(String input, int chunk) throws IOException {
    BufferedReader r = new BufferedReader(getChunkedReader(input, chunk));
    List<String> lines = new ArrayList<>();
    String line;
    while ((line = r.readLine()) != null) {
      lines.add(line);
    }
    r.close();

      off += len;
    }
    lineBuf.finish();
    return lines;
  }

  private static List<String> readUsingJava(String input, int chunk) throws IOException {
    BufferedReader r = new BufferedReader(getChunkedReader(input, chunk));
    List<String> lines = new ArrayList<>();
    String line;
    while ((line = r.readLine()) != null) {
      lines.add(line);
    }
    r.close();

        final Pattern parsePattern = Pattern.compile("(.*)\\s*=>\\s*(.*)\\s*$");
        final List<CharMappingItem> itemList = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments

        final String dictionaryPath = System.getProperty("fess.dictionary.path", StringUtil.EMPTY);
        final StringBuilder sb = new StringBuilder();
        try (BufferedReader br =
                new BufferedReader(new InputStreamReader(this.getClass().getClassLoader().getResourceAsStream(getSuggestAnalyzerPath())))) {

            String line;
            while ((line = br.readLine()) != null) {

     */
    protected void reload(final ProtwordsUpdater updater, final InputStream in) {
        final List<ProtwordsItem> itemList = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {