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java.lang.Object
org.htmlparser.sax.XMLReader
ContentHandler
based on encountered nodes.
org.xml.sax.XMLReader reader = org.xml.sax.helpers.XMLReaderFactory.createXMLReader ("org.htmlparser.sax.XMLReader"); org.xml.sax.ContentHandler content = new MyContentHandler (); reader.setContentHandler (content); org.xml.sax.ErrorHandler errors = new MyErrorHandler (); reader.setErrorHandler (errors); reader.parse ("http://cbc.ca");
Field Summary | |
protected ContentHandler |
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protected DTDHandler |
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protected EntityResolver |
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protected ErrorHandler |
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protected boolean |
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protected boolean |
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protected Parser |
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protected String[] |
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protected NamespaceSupport |
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Constructor Summary | |
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Method Summary | |
protected void | |
ContentHandler |
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DTDHandler |
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EntityResolver |
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ErrorHandler |
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boolean |
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Object |
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void |
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void |
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void |
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void |
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void |
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void |
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void |
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void |
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protected ContentHandler mContentHandler
The content callback object.
protected DTDHandler mDTDHandler
not implemented
protected EntityResolver mEntityResolver
not implemented
protected ErrorHandler mErrorHandler
The error handler object.
protected boolean mNameSpacePrefixes
Determines if namespace prefix handling is on.
- See Also:
mNameSpaces
protected boolean mNameSpaces
Determines if namespace handling is on. All XMLReaders are required to recognize the feature names:
http://xml.org/sax/features/namespaces
- a value of "true" indicates namespace URIs and unprefixed local names for element and attribute names will be availablehttp://xml.org/sax/features/namespace-prefixes
- a value of "true" indicates that XML qualified names (with prefixes) and attributes (including xmlns* attributes) will be available.
protected String[] mParts
Qualified name parts.
protected NamespaceSupport mSupport
Namspace utility object.
protected void doSAX(Node node) throws ParserException, SAXException
Process nodes recursively on the DocumentHandler. Calls methods on the handler based on the type and whether it's an end tag. Processes composite tags recursively. Does rudimentary namespace processing according to the state ofmNameSpaces
andmNameSpacePrefixes
.
- Parameters:
node
- The htmlparser node to traverse.
- Throws:
ParserException
- If a parse error occurs.
public ContentHandler getContentHandler()
Return the current content handler.
- Returns:
- The current content handler, or null if none has been registered.
- See Also:
setContentHandler(ContentHandler)
public DTDHandler getDTDHandler()
Return the current DTD handler.
- Returns:
- The current DTD handler, or null if none has been registered.
- See Also:
setDTDHandler(DTDHandler)
public EntityResolver getEntityResolver()
Return the current entity resolver.
- Returns:
- The current entity resolver, or null if none has been registered.
- See Also:
setEntityResolver(EntityResolver)
public ErrorHandler getErrorHandler()
Return the current error handler.
- Returns:
- The current error handler, or null if none has been registered.
- See Also:
setErrorHandler(ErrorHandler)
public boolean getFeature(String name) throws SAXNotRecognizedException, SAXNotSupportedException
Look up the value of a feature flag. The feature name is any fully-qualified URI. It is possible for an XMLReader to recognize a feature name but temporarily be unable to return its value. Some feature values may be available only in specific contexts, such as before, during, or after a parse. Also, some feature values may not be programmatically accessible. (In the case of an adapter for SAX1Parser
, there is no implementation-independent way to expose whether the underlying parser is performing validation, expanding external entities, and so forth.) All XMLReaders are required to recognize the http://xml.org/sax/features/namespaces and the http://xml.org/sax/features/namespace-prefixes feature names. Typical usage is something like this:XMLReader r = new MySAXDriver(); // try to activate validation try { r.setFeature("http://xml.org/sax/features/validation", true); } catch (SAXException e) { System.err.println("Cannot activate validation."); } // register event handlers r.setContentHandler(new MyContentHandler()); r.setErrorHandler(new MyErrorHandler()); // parse the first document try { r.parse("http://www.foo.com/mydoc.xml"); } catch (IOException e) { System.err.println("I/O exception reading XML document"); } catch (SAXException e) { System.err.println("XML exception reading document."); }Implementors are free (and encouraged) to invent their own features, using names built on their own URIs.
- Parameters:
name
- The feature name, which is a fully-qualified URI.
- Returns:
- The current value of the feature (true or false).
- See Also:
setFeature(String,boolean)
public Object getProperty(String name) throws SAXNotRecognizedException, SAXNotSupportedException
Look up the value of a property. The property name is any fully-qualified URI. It is possible for an XMLReader to recognize a property name but temporarily be unable to return its value. Some property values may be available only in specific contexts, such as before, during, or after a parse. XMLReaders are not required to recognize any specific property names, though an initial core set is documented for SAX2. Implementors are free (and encouraged) to invent their own properties, using names built on their own URIs.
- Parameters:
name
- The property name, which is a fully-qualified URI.
- Returns:
- The current value of the property.
- See Also:
setProperty(String,Object)
public void parse(InputSource input) throws IOException, SAXException
Parse an XML document. The application can use this method to instruct the XML reader to begin parsing an XML document from any valid input source (a character stream, a byte stream, or a URI). Applications may not invoke this method while a parse is in progress (they should create a new XMLReader instead for each nested XML document). Once a parse is complete, an application may reuse the same XMLReader object, possibly with a different input source. Configuration of the XMLReader object (such as handler bindings and values established for feature flags and properties) is unchanged by completion of a parse, unless the definition of that aspect of the configuration explicitly specifies other behavior. (For example, feature flags or properties exposing characteristics of the document being parsed.) During the parse, the XMLReader will provide information about the XML document through the registered event handlers. This method is synchronous: it will not return until parsing has ended. If a client application wants to terminate parsing early, it should throw an exception.
- Parameters:
input
- The input source for the top-level of the XML document.
- See Also:
InputSource
,parse(java.lang.String)
,setEntityResolver(EntityResolver)
,setDTDHandler(DTDHandler)
,setContentHandler(ContentHandler)
,setErrorHandler(ErrorHandler)
public void parse(String systemId) throws IOException, SAXException
Parse an XML document from a system identifier (URI). This method is a shortcut for the common case of reading a document from a system identifier. It is the exact equivalent of the following:parse(new InputSource(systemId));If the system identifier is a URL, it must be fully resolved by the application before it is passed to the parser.
- Parameters:
systemId
- The system identifier (URI).
- See Also:
parse(org.xml.sax.InputSource)
public void setContentHandler(ContentHandler handler)
Allow an application to register a content event handler. If the application does not register a content handler, all content events reported by the SAX parser will be silently ignored. Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.
- Parameters:
handler
- The content handler.
- See Also:
getContentHandler()
public void setDTDHandler(DTDHandler handler)
Allow an application to register a DTD event handler. If the application does not register a DTD handler, all DTD events reported by the SAX parser will be silently ignored. Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.
- Parameters:
handler
- The DTD handler.
- See Also:
getDTDHandler()
public void setEntityResolver(EntityResolver resolver)
Allow an application to register an entity resolver. If the application does not register an entity resolver, the XMLReader will perform its own default resolution. Applications may register a new or different resolver in the middle of a parse, and the SAX parser must begin using the new resolver immediately.
- Parameters:
resolver
- The entity resolver.
- See Also:
getEntityResolver()
public void setErrorHandler(ErrorHandler handler)
Allow an application to register an error event handler. If the application does not register an error handler, all error events reported by the SAX parser will be silently ignored; however, normal processing may not continue. It is highly recommended that all SAX applications implement an error handler to avoid unexpected bugs. Applications may register a new or different handler in the middle of a parse, and the SAX parser must begin using the new handler immediately.
- Parameters:
handler
- The error handler.
- See Also:
getErrorHandler()
public void setFeature(String name, boolean value) throws SAXNotRecognizedException, SAXNotSupportedException
Set the value of a feature flag. The feature name is any fully-qualified URI. It is possible for an XMLReader to expose a feature value but to be unable to change the current value. Some feature values may be immutable or mutable only in specific contexts, such as before, during, or after a parse. All XMLReaders are required to support setting http://xml.org/sax/features/namespaces to true and http://xml.org/sax/features/namespace-prefixes to false.
- Parameters:
name
- The feature name, which is a fully-qualified URI.value
- The requested value of the feature (true or false).
- See Also:
getFeature(String)
public void setProperty(String name, Object value) throws SAXNotRecognizedException, SAXNotSupportedException
Set the value of a property. The property name is any fully-qualified URI. It is possible for an XMLReader to recognize a property name but to be unable to change the current value. Some property values may be immutable or mutable only in specific contexts, such as before, during, or after a parse. XMLReaders are not required to recognize setting any specific property names, though a core set is defined by SAX2. This method is also the standard mechanism for setting extended handlers.
- Parameters:
name
- The property name, which is a fully-qualified URI.value
- The requested value for the property.
© 2005 Derrick Oswald Mai 08, 2008 |
HTML Parser is an open source library released under LGPL. | |