extractor.command = getCommand(scriptFile);
        final Map<String, String> params = new HashMap<String, String>();
        params.put(ExtractData.RESOURCE_NAME_KEY, "hoge/fuga.txt");
        final ExtractData text = extractor.getText(new FileInputStream(contentFile), params);
        assertEquals(content, text.getContent());
    }

import java.io.IOException;
import java.io.InputStream;
import java.util.Map;

import org.apache.poi.hdgf.extractor.VisioTextExtractor;
import org.codelibs.fess.crawler.entity.ExtractData;
import org.codelibs.fess.crawler.exception.CrawlerSystemException;
import org.codelibs.fess.crawler.exception.ExtractException;

/**
 * Gets a text from . file.
 *
 * @author shinsuke
 *
 */

        final InputStream in = new ByteArrayInputStream(new byte[0]);
        final Map<String, String> params = new HashMap<>();
        params.put(ExtractData.RESOURCE_NAME_KEY, "test-document.pdf");

        final ExtractData result = filenameExtractor.getText(in, params);

        assertNotNull(result);
        assertEquals("test-document.pdf", result.getContent());
    }

    /**

            final ExtractData extractData = new ExtractData(plainText);

            // Extract front matter metadata
            if (extractFrontMatter) {
                extractFrontMatterMetadata(document, extractData);
            }

            // Extract headings
            if (extractHeadings) {
                extractHeadingMetadata(document, extractData);
            }

            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();
                    extractData.putValues(entry.getKey(), values.toArray(new String[0]));
                }

            throw new ExtractException(e);
        }
    }

    /**
     * Creates an ExtractData object from the extracted content.
     * @param content The extracted content.
     * @return The ExtractData object.
     */
    protected ExtractData createExtractData(final String content) {
        return new ExtractData(extractString(content));
    }

    /**
     * Detects the encoding of the input stream.

        final ExtractData extractData = jsonExtractor.getText(in, null);
        CloseableUtil.closeQuietly(in);

        // Verify no metadata extracted
        assertNull(extractData.getValues("title"));
        assertNull(extractData.getValues("author"));

        // But content should still be present
        final String content = extractData.getContent();

        final ExtractData extractData = csvExtractor.getText(in, null);
        CloseableUtil.closeQuietly(in);

        // Verify no column metadata
        assertNull(extractData.getValues("columns"));

        // But content should still be present
        final String content = extractData.getContent();
        assertTrue(content.contains("John Doe"));
    }

     */
    @Override
    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        validateInputStream(in);
        try (final HSLFSlideShow slideShow = new HSLFSlideShow(in);
                final SlideShowExtractor<HSLFShape, HSLFTextParagraph> extractor = new SlideShowExtractor<>(slideShow)) {
            return new ExtractData(extractor.getText());
        } catch (final IOException e) {

     */
    public TextExtractor() {
        super();
    }

    @Override
    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        validateInputStream(in);
        try {
            final String content = new String(InputStreamUtil.getBytes(in), getEncoding());
            return new ExtractData(content);
        } catch (final Exception e) {