public String toLineString() {
        final StringBuilder buf = new StringBuilder(100);
        if (isUpdated()) {
            buf.append(quoteEscape(newToken));
            buf.append(',');
            buf.append(quoteEscape(newSegmentation));
            buf.append(',');
            buf.append(quoteEscape(newReading));
            buf.append(',');
            buf.append(quoteEscape(newPos));
        } else {

        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("env");
        buf.append(File.separator);
        buf.append(getExecuteType());
        buf.append(File.separator);
        buf.append("resources");
        buf.append(cpSeparator);
        // WEB-INF/classes
        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("classes");

     */
    private StringBuilder createStringBuffer(final Object keyObj, final long time) {
        final StringBuilder buf = new StringBuilder(1000);
        buf.append("url:").append(getUrl(keyObj));
        buf.append('\t');
        buf.append("time:").append(FessFunctions.formatDate(new Date(time)));
        return buf;
    }

    /**
     * Extracts the URL string from a crawler object for logging purposes.
     *

    byte[] buf = new byte[] {'y', 'a', 'm', 's'};
    HashingOutputStream out = new HashingOutputStream(hashFunction, buffer);
    out.write(buf);

    verify(hashFunction).newHasher();
    verify(hasher).putBytes(buf, 0, buf.length);
    verifyNoMoreInteractions(hashFunction, hasher);
  }

  public void testWrite_putByteArrayAtPos() throws Exception {
    byte[] buf = new byte[] {'y', 'a', 'm', 's'};

      h ^= fingerprint(buf, bufLen);
      h = remix(h);
      buf[bufLen++] = getChar(h);

      int x0 = buf[bufLen - 1] & 0xff;
      int x1 = buf[bufLen - 2] & 0xff;
      int x2 = buf[bufLen - 3] & 0xff;
      int x3 = buf[bufLen / 2] & 0xff;
      buf[((x0 << 16) + (x1 << 8) + x2) % bufLen] ^= x3;
      buf[((x1 << 16) + (x2 << 8) + x3) % bufLen] ^= i % 256;
    }

        final StringBuilder buf = new StringBuilder(1000);

        @SuppressWarnings("unchecked")
        final List<String> roleTypeList = (List<String>) dataMap.get(fessConfig.getIndexFieldRole());
        buf.append(url);
        if (roleTypeList != null && !roleTypeList.isEmpty()) {
            buf.append(";r=");
            buf.append(roleTypeList.stream().sorted().collect(Collectors.joining(",")));

        }

        StringBuilder buf = new StringBuilder();
        for (int i = 0; i < 550; i++) {
            buf.append('a');
        }
        assertEquals(
                "c11e9ec4fa5ccd0c37c78e7e43555c7061a4dfe8d250a66cad3abaf190e4519cae5b0dce520fb94667cb37e5bbd29b226638cc6172169706a8ae36b000a6900c",
                crawlingInfoHelper.generateId(buf.substring(0, 500)));
        assertEquals(

     */
    public static void appendHex(final StringBuilder buf, final int i) {
        buf.append(Integer.toHexString(i >> 24 & 0xff));
        buf.append(Integer.toHexString(i >> 16 & 0xff));
        buf.append(Integer.toHexString(i >> 8 & 0xff));
        buf.append(Integer.toHexString(i & 0xff));
    }

    /**
     * Converts an underscore-separated string to camel case.
     * <p>
     * Usage example:
     * </p>

    InputStream in = url.openStream();
    try {
      OutputStream out = new FileOutputStream(file);
      try {
        byte[] buf = new byte[4096];
        for (int read = in.read(buf); read != -1; read = in.read(buf)) {
          out.write(buf, 0, read);
        }
      } finally {
        out.close();
      }
    } finally {
      in.close();
    }
  }

        final StringBuilder buf = new StringBuilder(100);
        buf.append(code);
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String language = DocumentUtil.getValue(doc, fessConfig.getIndexFieldLang(), String.class);
        if (StringUtil.isNotBlank(language)) {
            for (final String f : langFields) {