import org.codelibs.fess.crawler.exception.ExtractException;

/**
 * Gets a text from . file.
 *
 * @author shinsuke
 *
 */
public class MsVisioExtractor extends AbstractExtractor {

    /**
     * Creates a new MsVisioExtractor instance.
     */
    public MsVisioExtractor() {
        super();
    }

    /**
     * Extracts text from the Visio input stream.
     * @param in The input stream.

        }
    }

    /**
     *  Use an XPath string to select a nodelist.
     *  XPath namespace prefixes are resolved from the contextNode.
     *
     *  @param contextNode The node to start searching from.
     *  @param expression A valid XPath string.
     *  @return A XPathNodes, should never be null.
     *
     * @throws XPathExpressionException if an XPath expression error occurs.

                throw new ExtractException(e);
            }
        }

        return encoding;
    }

    /**
     * Extracts text content from the given content by removing tags and processing attributes.
     * @param content The content to extract from.
     * @return The extracted text.
     */
    protected String extractString(final String content) {
        String input = content.replaceAll("[\\r\\n]", " ");

    /**
     * Reads the next byte of data from the input stream.
     *
     * @return the next byte of data, or -1 if the end of the stream is reached
     * @throws IOException if an I/O error occurs
     */
    @Override
    public int read() throws IOException {
        return inputStream.read();
    }

    /**
     * Reads up to len bytes of data from the input stream into an array of bytes.
     *

    }

    /**
     * Extracts keywords from the given query string based on the specified fields.
     *
     * @param q the query string to parse and extract keywords from
     * @param fields the fields to consider when extracting keywords
     * @return a list of unique keywords extracted from the query string
     */

    /**
     * Gets the set of child URLs discovered from this response.
     *
     * @return the set of child URLs
     */
    public Set<RequestData> getChildUrlSet() {
        return childUrlSet;
    }

    /**
     * Creates a RequestData object from this response's URL and method.
     *
     * @return a new RequestData object with the URL and method from this response
     */

/**
 * The BinaryTransformer class is responsible for transforming binary data from a ResponseData object
 * into a ResultData object, and for retrieving the binary data from an AccessResultData object.
 * It extends the AbstractTransformer class.
 *
 * <p>
 * This transformer extracts the binary content from the response body of a web resource,

    }

    /**
     * Parses a robots.txt file from the given input stream using UTF-8 encoding.
     * @param stream the input stream to parse
     * @return the parsed RobotsTxt object, or null if disabled
     */
    public RobotsTxt parse(final InputStream stream) {
        return parse(stream, Constants.UTF_8);
    }

    /**
     * Parses a robots.txt file from the given input stream using the specified character encoding.

 * It uses XPath expressions to extract text content from HTML documents.
 * <p>
 * This class provides methods to configure the XPath expressions, parser features, and properties.
 * It also includes caching mechanism for XPathAPI instances to improve performance.
 * </p>
 * <p>
 * The extracted text is obtained from the nodes selected by the {@code targetNodePath} XPath expression.

 * <ul>
 *   <li>{@link #escapeXml(String)}: Escapes special characters in an XML string.</li>
 *   <li>{@link #stripInvalidXMLCharacters(String)}: Strips invalid XML characters from a string.</li>
 *   <li>{@link #getDataMap(AccessResultData)}: Parses XML content from {@link AccessResultData} and returns a map of the data.</li>
 * </ul>
 *
 * <h2>Usage Example:</h2>
 * <pre>
 * {@code