return "file,smb,ftp";
            }
        });

        final ProtocolHelper protocolHelper = new ProtocolHelper();
        protocolHelper.init();

        assertTrue(protocolHelper.isValidFileProtocol("file:///path/to/file"));
        assertTrue(protocolHelper.isValidFileProtocol("smb://server/share"));
        assertTrue(protocolHelper.isValidFileProtocol("ftp://server/path"));

        // ftp
        assertUrlLink("ftp://www.codelibs.org/", //
                "ftp://www.codelibs.org/");
        assertUrlLink("ftp://www.codelibs.org/あ", //
                "ftp://www.codelibs.org/あ");
        assertUrlLink("ftp://www.codelibs.org/%E3%81%82", //
                "ftp://www.codelibs.org/%E3%81%82");
        assertUrlLink("ftp://www.codelibs.org/%z", //

        return roleTypeList;
    }

    /**
     * Extracts role type information from FTP (File Transfer Protocol) response data.
     * Processes FTP metadata to extract file owner and group information.
     *
     * @param responseData the response data containing FTP metadata
     * @return a list of role type strings extracted from the FTP file permissions
     */

        String[] customWebProtocols = { "http:", "https:", "ftp:" };
        String[] customFileProtocols = { "file:", "smb:" };

        parser.setWebProtocols(customWebProtocols);
        parser.setFileProtocols(customFileProtocols);

        assertEquals("\\Qftp://test\\E.*", parser.parseFilterPaths("ftp://test", true, false));
        assertEquals("\\Qftp://test\\E.*", parser.parseFilterPaths("ftp://test", false, true));
    }

        }
        return value;
    }

    /**
     * Extracts the filename from a URL, handling various protocols and URL decoding.
     * Processes HTTP, HTTPS, file, SMB, and FTP URLs appropriately.
     *
     * @param url the URL to extract filename from
     * @param encoding the character encoding (currently unused in this method)
     * @return the extracted filename, or empty string if none found

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.client.CrawlerClientFactory;
import org.codelibs.fess.crawler.client.ftp.FtpAuthentication;
import org.codelibs.fess.crawler.client.ftp.FtpClient;
import org.codelibs.fess.crawler.client.http.Authentication;
import org.codelibs.fess.crawler.client.http.HcHttpClient;
import org.codelibs.fess.crawler.client.http.form.FormScheme;

import org.codelibs.fess.Constants;
import org.codelibs.fess.app.service.FileAuthenticationService;
import org.codelibs.fess.crawler.client.CrawlerClientFactory;
import org.codelibs.fess.crawler.client.ftp.FtpAuthentication;
import org.codelibs.fess.crawler.client.smb.SmbAuthentication;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.opensearch.config.bsentity.BsFileConfig;

http://foo:80/  s:http h:foo p:/
http://foo:81/  s:http h:foo port:81 p:/
httpa://foo:80/  s:httpa p://foo:80/
http://foo:-80/
https://foo:443/  s:https h:foo p:/
https://foo:80/  s:https h:foo port:80 p:/
ftp://foo:21/  s:ftp h:foo p:/
ftp://foo:80/  s:ftp h:foo port:80 p:/
gopher://foo:70/  s:gopher h:foo p:/
gopher://foo:443/  s:gopher h:foo port:443 p:/
ws://foo:80/  s:ws h:foo p:/
ws://foo:81/  s:ws h:foo port:81 p:/

        url = "smb1://example.com/test%E3%81%82.txt";
        exp = "test%E3%81%82.txt";
        assertEquals(exp, transformer.getFileName(url, Constants.UTF_8));

        url = "ftp://example.com/test%E3%81%82.txt";
        exp = "test%E3%81%82.txt";
        assertEquals(exp, transformer.getFileName(url, Constants.UTF_8));
    }

    public void test_decodeUrl_null() throws Exception {

    public static final String FORM = "FORM";

    /** Samba authentication type identifier. */
    public static final String SAMBA = "SAMBA";

    /** FTP authentication type identifier. */
    public static final String FTP = "FTP";

    // ============================================================
    // Query Reserved Characters and Patterns
    // ============================================================