*/
    protected String crawlingConfigInternal(final CrawlingConfigForm form) {

        String configName = form.crawlingConfigName;
        String configPath = form.crawlingConfigPath.trim();
        if (StringUtil.isBlank(configName)) {
            configName = StringUtils.abbreviate(configPath, 30);
        }

        // normalize
        final StringBuilder buf = new StringBuilder(1000);

                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to read data.", e);
                }
                return StringUtil.EMPTY;
            }

            return buf.toString().trim();
        }

        private boolean isSpaceChar(final int c) {
            for (final int spaceChar : spaceChars) {
                if (c == spaceChar) {
                    return true;
                }

        assertTrue(responseData.getUrl().endsWith("test/text1.txt"));
        final String content = new String(InputStreamUtil.getBytes(responseData.getResponseBody()), "UTF-8");
        assertEquals("test1", content.trim());
    }

    public void test_doGet_file_with_space() throws Exception {
        final File file = ResourceUtil.getResourceAsFile("test/text 3.txt");
        String path = file.getAbsolutePath();

            final int[] tmp = new int[3];
            final StringTokenizer st = new StringTokenizer(RO, ",");
            int i = 0;
            while (st.hasMoreTokens()) {
                final String s = st.nextToken().trim();
                if (s.equalsIgnoreCase("LMHOSTS")) {
                    tmp[i] = RESOLVER_LMHOSTS;
                    i++;
                } else if (s.equalsIgnoreCase("WINS")) {

                final Node node = nodeList.get(i);
                buf.append(node.getTextContent()).append(' ');
            }
            return new ExtractData(buf.toString().replaceAll("\\s+", " ").trim());
        } catch (final Exception e) {
            throw new ExtractException(e);
        }
    }

    /**
     * Gets an XPathAPI instance from the cache for the current thread.
     *

            extractContent(rootNode, "", textBuilder, metadataMap, 0);

            final ExtractData extractData = new ExtractData(textBuilder.toString().trim());

            if (extractMetadata) {
                for (final Map.Entry<String, List<String>> entry : metadataMap.entrySet()) {
                    final List<String> values = entry.getValue();

            final List<Integer> list = new ArrayList<>();
            for (final String value : values) {
                try {
                    list.add(Integer.parseInt(value.trim()));
                } catch (final NumberFormatException e) {}
            }
            this.days = new int[list.size()];
            for (int i = 0; i < list.size(); i++) {
                this.days[i] = list.get(i);

            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines
                if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);
                    }

     */
    static String getValue(final List<String> list, final int index) {
        if (index >= list.size()) {
            return StringUtil.EMPTY;
        }
        String item = list.get(index).trim();
        if (StringUtil.isBlank(item)) {
            return StringUtil.EMPTY;
        }
        if (item.length() > 1 && item.charAt(0) == '"' && item.charAt(item.length() - 1) == '"') {

                        try {
                            while (!reader.ready()) {
                                ThreadUtil.sleep(1000L);
                            }
                            command = reader.readLine().trim();
                            if (logger.isDebugEnabled()) {
                                logger.debug("Process command: command={}", command);
                            }