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

import org.codelibs.core.lang.StringUtil;

/**
 * @author shinsuke
 *
 */
public class EncodingHelper {

    protected String defaultEncoding = null;

    protected Map<String, String> encodingMap = new HashMap<>();

    public String normalize(final String enc) {
        if (StringUtil.isBlank(enc)) {

 */
public class EncodingHelperTest extends PlainTestCase {
    public EncodingHelper encodingHelper;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("encodingHelper", EncodingHelper.class);
        encodingHelper = container.getComponent("encodingHelper");
    }

    public void test_normalize() {
        String enc;

<!DOCTYPE components PUBLIC "-//DBFLUTE//DTD LastaDi 1.0//EN"
	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml" />

	<component name="encodingHelper" class="org.codelibs.fess.crawler.helper.EncodingHelper">
		<postConstruct name="addEncodingMapping">
			<arg>"unicode"</arg>
			<arg>"UTF-16LE"</arg>
		</postConstruct>
	</component>

        return normalizeEncoding(encoding);
    }

    protected String normalizeEncoding(final String encoding) {
        try {
            final EncodingHelper encodingHelper = crawlerContainer.getComponent("encodingHelper");
            return encodingHelper.normalize(encoding);
        } catch (final Exception e) {
            // NOP
        }
        return encoding;
    }

                .singleton("sitemapsHelper", SitemapsHelper.class).singleton("logHelper", LogHelperImpl.class)
                .singleton("encodingHelper", EncodingHelper.class).singleton("contentLengthHelper", ContentLengthHelper.class)
                .singleton("mimeTypeHelper", MimeTypeHelperImpl.class)