import org.codelibs.fess.crawler.entity.ResponseData;
import org.codelibs.fess.crawler.exception.CrawlingAccessException;

/**
 * Utility class for handling response data.
 */
public final class ResponseDataUtil {

    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private ResponseDataUtil() {
    }

    /**

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.util;

/**
 * Utility class for character-related operations.
 */
public final class CharUtil {
    /**
     * Private constructor to prevent instantiation of this utility class.
     */
    private CharUtil() {
    }

    /**
     * Checks if the given character is a valid URL character.
     *

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.suggest.constants;

/**
 * This class contains constants used in the Fess Suggest module.
 * It is a utility class and should not be instantiated.
 */
public final class SuggestConstants {
    // Private constructor to prevent instantiation
    private SuggestConstants() {
    }

    /** An empty string constant. */

 */
package org.codelibs.fess.crawler.helper;

import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

import org.codelibs.core.lang.StringUtil;

/**
 * EncodingHelper provides utility methods for managing and normalizing character encodings.
 * It allows setting a default encoding, mapping various encoding names to preferred ones,

import org.codelibs.fess.crawler.entity.AccessResult;
import org.codelibs.fess.crawler.entity.UrlQueue;
import org.codelibs.fess.crawler.service.DataService;
import org.codelibs.fess.crawler.service.UrlQueueService;

/**
 * Utility class for managing crawling parameters using ThreadLocal variables.
 * This class provides methods to set and get various parameters related to the crawling process.
 *
 * <p>This class is final and cannot be instantiated.</p>
 *

import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.DefaultHandler;

/**
 * Utility class for XML-related operations.
 *
 * This class provides methods to escape special characters in XML strings,
 * strip invalid XML characters, and parse XML content into a map of data.
 *
 * <p>