assertEquals(".*index\\.html$", httpClient.convertRobotsTxtPatternToRegex("index.html$"));
        assertEquals("/\\..*", httpClient.convertRobotsTxtPatternToRegex("/."));
        assertEquals("/.*", httpClient.convertRobotsTxtPatternToRegex("/*"));
        assertEquals(".*\\..*", httpClient.convertRobotsTxtPatternToRegex("."));
        assertEquals(".*", httpClient.convertRobotsTxtPatternToRegex("*"));
    }

            }
        }

        httpClient = closeableHttpClient;
    }

    /**
     * Destroys the HTTP client.
     */
    @PreDestroy
    public void destroy() {
        if (httpClient != null) {
            try {
                httpClient.close();
            } catch (final IOException e) {
                logger.error("Failed to close httpClient.", e);
            }
        }
    }

        StandardCrawlerContainer container = new StandardCrawlerContainer();
        
        // Configure basic components
        container.singleton("crawler", Crawler.class)
                .singleton("httpClient", HcHttpClient.class)
                .singleton("fileTransformer", FileTransformer.class);
        
        // Get crawler instance
        Crawler crawler = container.getComponent("crawler");
        

			<artifactId>httpclient</artifactId>
			<version>${httpcomponents.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpmime</artifactId>
			<version>${httpcomponents.version}</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient-cache</artifactId>

        childUrlRuleMap.put("//SCRIPT", "src");

        container = new StandardCrawlerContainer();
        container.<HcHttpClient> prototype("internalHttpClient", HcHttpClient.class, client -> {
            client.setCookieSpec(CookieSpecs.BEST_MATCH);
        }).prototype("httpClient", FaultTolerantClient.class, client -> {
            client.setCrawlerClient(container.getComponent("internalHttpClient"));

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.lang.ThreadUtil;
import org.codelibs.fesen.client.HttpClient;
import org.codelibs.fess.crawler.exception.OpenSearchAccessException;
import org.opensearch.OpenSearchException;
import org.opensearch.action.ActionRequest;
import org.opensearch.action.ActionType;

 * </p>
 *
 * <pre>
 * {@code
 * FtpClient ftpClient = new FtpClient();
 * ftpClient.init(); // Initialize with configured parameters
 * ResponseData responseData = ftpClient.doGet("ftp://example.com/path/to/file.txt");
 * // Process the responseData
 * ftpClient.close(); // Close and release resources
 * }
 * </pre>
 *
 * @author shinsuke
 */
public class FtpClient extends AbstractCrawlerClient {

    public FtpClient ftpClient;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("mimeTypeHelper", MimeTypeHelperImpl.class)//
                .singleton("ftpClient", FtpClient.class);
        ftpClient = container.getComponent("ftpClient");
    }