@SuppressWarnings("serial")
public class SiteMapTikaParser implements Parser {
private static final Set<MediaType> SUPPORTED_TYPES =
Collections.unmodifiableSet(
new HashSet<MediaType>(
Arrays.asList(
MediaType.text("xml"),
MediaType.application("xml"),
MediaType.application("x-xml"),
MediaType.application("atom+xml"),
MediaType.application("rss+xml"),
MediaType.text("plain"),
MediaType.application("gzip"),
MediaType.application("x-gzip"),
MediaType.application("x-gunzip"),
MediaType.application("gzipped"),
MediaType.application("gzip-compressed"),
MediaType.application("x-compress"),
MediaType.application("octet-stream"))));
// SiteMapParser _parser;
public SiteMapTikaParser() {
// _parser = new SiteMapParser();
}
@Override
public Set<MediaType> getSupportedTypes(ParseContext context) {
return SUPPORTED_TYPES;
}
@Override
public void parse(
InputStream stream, ContentHandler handler, Metadata metadata, ParseContext context)
throws IOException, SAXException, TikaException {
if (metadata.get(Metadata.CONTENT_TYPE) == null) {
metadata.set(Metadata.CONTENT_TYPE, "application/xml");
}
final XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata);
xhtml.startDocument();
xhtml.startElement("p");
xhtml.endElement("p");
xhtml.endDocument();
}
/** @deprecated This method will be removed in Apache Tika 1.0. */
public void parse(InputStream stream, ContentHandler handler, Metadata metadata)
throws IOException, SAXException, TikaException {
parse(stream, handler, metadata, new ParseContext());
}
}
/**
* HTML parser. Uses TagSoup to turn the input document to HTML SAX events, and post-processes the
* events to produce XHTML and metadata expected by Tika clients.
*/
public class HtmlParser extends AbstractParser {
/** Serial version UID */
private static final long serialVersionUID = 7895315240498733128L;
private static final MediaType XHTML = MediaType.application("xhtml+xml");
private static final MediaType WAP_XHTML = MediaType.application("vnd.wap.xhtml+xml");
private static final MediaType X_ASP = MediaType.application("x-asp");
private static final Set<MediaType> SUPPORTED_TYPES =
Collections.unmodifiableSet(
new HashSet<MediaType>(Arrays.asList(MediaType.text("html"), XHTML, WAP_XHTML, X_ASP)));
private static final ServiceLoader LOADER = new ServiceLoader(HtmlParser.class.getClassLoader());
/** HTML schema singleton used to amortise the heavy instantiation time. */
private static final Schema HTML_SCHEMA = new HTMLSchema();
public Set<MediaType> getSupportedTypes(ParseContext context) {
return SUPPORTED_TYPES;
}
public void parse(
InputStream stream, ContentHandler handler, Metadata metadata, ParseContext context)
throws IOException, SAXException, TikaException {
// Automatically detect the character encoding
AutoDetectReader reader =
new AutoDetectReader(
new CloseShieldInputStream(stream), metadata, context.get(ServiceLoader.class, LOADER));
try {
Charset charset = reader.getCharset();
String previous = metadata.get(Metadata.CONTENT_TYPE);
MediaType contentType = null;
if (previous == null || previous.startsWith("text/html")) {
contentType = new MediaType(MediaType.TEXT_HTML, charset);
} else if (previous.startsWith("application/xhtml+xml")) {
contentType = new MediaType(XHTML, charset);
} else if (previous.startsWith("application/vnd.wap.xhtml+xml")) {
contentType = new MediaType(WAP_XHTML, charset);
} else if (previous.startsWith("application/x-asp")) {
contentType = new MediaType(X_ASP, charset);
}
if (contentType != null) {
metadata.set(Metadata.CONTENT_TYPE, contentType.toString());
}
// deprecated, see TIKA-431
metadata.set(Metadata.CONTENT_ENCODING, charset.name());
// Get the HTML mapper from the parse context
HtmlMapper mapper = context.get(HtmlMapper.class, new HtmlParserMapper());
// Parse the HTML document
org.ccil.cowan.tagsoup.Parser parser = new org.ccil.cowan.tagsoup.Parser();
// Use schema from context or default
Schema schema = context.get(Schema.class, HTML_SCHEMA);
// TIKA-528: Reuse share schema to avoid heavy instantiation
parser.setProperty(org.ccil.cowan.tagsoup.Parser.schemaProperty, schema);
// TIKA-599: Shared schema is thread-safe only if bogons are ignored
parser.setFeature(org.ccil.cowan.tagsoup.Parser.ignoreBogonsFeature, true);
parser.setContentHandler(
new XHTMLDowngradeHandler(new HtmlHandler(mapper, handler, metadata)));
parser.parse(reader.asInputSource());
} finally {
reader.close();
}
}
/**
* Maps "safe" HTML element names to semantic XHTML equivalents. If the given element is unknown
* or deemed unsafe for inclusion in the parse output, then this method returns <code>null</code>
* and the element will be ignored but the content inside it is still processed. See the {@link
* #isDiscardElement(String)} method for a way to discard the entire contents of an element.
*
* <p>Subclasses can override this method to customize the default mapping.
*
* @param name HTML element name (upper case)
* @return XHTML element name (lower case), or <code>null</code> if the element is unsafe
* @since Apache Tika 0.5
* @deprecated Use the {@link HtmlMapper} mechanism to customize the HTML mapping. This method
* will be removed in Tika 1.0.
*/
protected String mapSafeElement(String name) {
return DefaultHtmlMapper.INSTANCE.mapSafeElement(name);
}
/**
* Checks whether all content within the given HTML element should be discarded instead of
* including it in the parse output. Subclasses can override this method to customize the set of
* discarded elements.
*
* @param name HTML element name (upper case)
* @return <code>true</code> if content inside the named element should be ignored, <code>false
* </code> otherwise
* @since Apache Tika 0.5
* @deprecated Use the {@link HtmlMapper} mechanism to customize the HTML mapping. This method
* will be removed in Tika 1.0.
*/
protected boolean isDiscardElement(String name) {
return DefaultHtmlMapper.INSTANCE.isDiscardElement(name);
}
/**
* @deprecated Use the {@link HtmlMapper} mechanism to customize the HTML mapping. This method
* will be removed in Tika 1.0.
*/
public String mapSafeAttribute(String elementName, String attributeName) {
return DefaultHtmlMapper.INSTANCE.mapSafeAttribute(elementName, attributeName);
}
/**
* Adapter class that maintains backwards compatibility with the protected HtmlParser methods.
* Making HtmlParser implement HtmlMapper directly would require those methods to be public, which
* would break backwards compatibility with subclasses.
*
* @deprecated Use the {@link HtmlMapper} mechanism to customize the HTML mapping. This class will
* be removed in Tika 1.0.
*/
private class HtmlParserMapper implements HtmlMapper {
public String mapSafeElement(String name) {
return HtmlParser.this.mapSafeElement(name);
}
public boolean isDiscardElement(String name) {
return HtmlParser.this.isDiscardElement(name);
}
public String mapSafeAttribute(String elementName, String attributeName) {
return HtmlParser.this.mapSafeAttribute(elementName, attributeName);
}
}
}
