domserializerimpl.java

来自「JAVA 所有包」· Java 代码 · 共 1,212 行 · 第 1/4 页

                || name.equalsIgnoreCase(Constants.DOM_XMLDECL)
                || name.equalsIgnoreCase(Constants.DOM_WELLFORMED)
                || name.equalsIgnoreCase(Constants.DOM_INFOSET)
                || name.equalsIgnoreCase(Constants.DOM_ENTITIES)
                || name.equalsIgnoreCase(Constants.DOM_CDATA_SECTIONS)
                || name.equalsIgnoreCase(Constants.DOM_COMMENTS)
                || name.equalsIgnoreCase(Constants.DOM_NAMESPACE_DECLARATIONS)
                || name.equalsIgnoreCase(Constants.DOM_FORMAT_PRETTY_PRINT)) {
                // both values supported
                return true;
            } else if (name.equalsIgnoreCase(Constants.DOM_CANONICAL_FORM)
                || name.equalsIgnoreCase(Constants.DOM_VALIDATE_IF_SCHEMA)
                || name.equalsIgnoreCase(Constants.DOM_VALIDATE)
                || name.equalsIgnoreCase(Constants.DOM_CHECK_CHAR_NORMALIZATION)
                || name.equalsIgnoreCase(Constants.DOM_DATATYPE_NORMALIZATION)) {
                // || name.equalsIgnoreCase(Constants.DOM_NORMALIZE_CHARACTERS)) {
                // true is not supported
                return !value;
            } else if (name.equalsIgnoreCase(Constants.DOM_ELEMENT_CONTENT_WHITESPACE)
                || name.equalsIgnoreCase(Constants.DOM_IGNORE_UNKNOWN_CHARACTER_DENORMALIZATIONS)) {
                // false is not supported
                return value;
            }
        } else if (name.equalsIgnoreCase(Constants.DOM_ERROR_HANDLER) &&
            state == null || state instanceof DOMErrorHandler) {
            return true;
        }
        
        return false;
    }

    /**
     *  DOM Level 3 Core CR - Experimental.
     * 
     *  The list of the parameters supported by this 
     * <code>DOMConfiguration</code> object and for which at least one value 
     * can be set by the application. Note that this list can also contain 
     * parameter names defined outside this specification. 
     */
    public DOMStringList getParameterNames() {
    	
     	if (fRecognizedParameters == null){
			Vector parameters = new Vector();

			//Add DOM recognized parameters
			//REVISIT: Would have been nice to have a list of 
			//recognized parameters.
			parameters.add(Constants.DOM_NAMESPACES);
			parameters.add(Constants.DOM_SPLIT_CDATA);
			parameters.add(Constants.DOM_DISCARD_DEFAULT_CONTENT);
			parameters.add(Constants.DOM_XMLDECL);
			parameters.add(Constants.DOM_CANONICAL_FORM);
			parameters.add(Constants.DOM_VALIDATE_IF_SCHEMA);
			parameters.add(Constants.DOM_VALIDATE);
			parameters.add(Constants.DOM_CHECK_CHAR_NORMALIZATION); 
			parameters.add(Constants.DOM_DATATYPE_NORMALIZATION);
			parameters.add(Constants.DOM_FORMAT_PRETTY_PRINT);
			//parameters.add(Constants.DOM_NORMALIZE_CHARACTERS); 
			parameters.add(Constants.DOM_WELLFORMED);
			parameters.add(Constants.DOM_INFOSET);
			parameters.add(Constants.DOM_NAMESPACE_DECLARATIONS);
			parameters.add(Constants.DOM_ELEMENT_CONTENT_WHITESPACE);
			parameters.add(Constants.DOM_ENTITIES);
			parameters.add(Constants.DOM_CDATA_SECTIONS);
			parameters.add(Constants.DOM_COMMENTS);
			parameters.add(Constants.DOM_IGNORE_UNKNOWN_CHARACTER_DENORMALIZATIONS);
			parameters.add(Constants.DOM_ERROR_HANDLER);
			//parameters.add(Constants.DOM_SCHEMA_LOCATION);
			//parameters.add(Constants.DOM_SCHEMA_TYPE);
			
			//Add recognized xerces features and properties
			
			fRecognizedParameters = new DOMStringListImpl(parameters);		
    		
    	}

    	return fRecognizedParameters; 	
    }	
    
    /** DOM L3-EXPERIMENTAL:
     * Getter for boolean and object parameters
     */
    public Object getParameter(String name) throws DOMException {
        
        if(name.equalsIgnoreCase(Constants.DOM_NORMALIZE_CHARACTERS)){
                      return null;
        } else if (name.equalsIgnoreCase(Constants.DOM_COMMENTS)) {
            return ((features & COMMENTS) != 0) ? Boolean.TRUE : Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_NAMESPACES)) {
            return (features & NAMESPACES) != 0 ? Boolean.TRUE : Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_XMLDECL)) {
            return (features & XMLDECL) != 0 ? Boolean.TRUE : Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_CDATA_SECTIONS)) {
            return (features & CDATA) != 0 ? Boolean.TRUE : Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_ENTITIES)) {
            return (features & ENTITIES) != 0 ? Boolean.TRUE : Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_SPLIT_CDATA)) {
            return (features & SPLITCDATA) != 0 ? Boolean.TRUE : Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_WELLFORMED)) {
            return (features & WELLFORMED) != 0 ? Boolean.TRUE : Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_NAMESPACE_DECLARATIONS)) {
            return (features & NSDECL) != 0 ? Boolean.TRUE : Boolean.FALSE;            
        } else if (name.equalsIgnoreCase(Constants.DOM_FORMAT_PRETTY_PRINT)) {
            return (features & FORMAT_PRETTY_PRINT) != 0 ? Boolean.TRUE : Boolean.FALSE;            
        } else if (name.equalsIgnoreCase(Constants.DOM_ELEMENT_CONTENT_WHITESPACE) ||
                   name.equalsIgnoreCase(Constants.DOM_IGNORE_UNKNOWN_CHARACTER_DENORMALIZATIONS)) {
            return Boolean.TRUE;
        }else if (name.equalsIgnoreCase(Constants.DOM_DISCARD_DEFAULT_CONTENT)){
            return ((features & DISCARDDEFAULT)!=0)?Boolean.TRUE:Boolean.FALSE;
        }else if (name.equalsIgnoreCase(Constants.DOM_INFOSET)){
            if ((features & ENTITIES) == 0 &&
                 (features & CDATA) == 0 &&
                 (features & NAMESPACES) != 0 &&
                 (features & NSDECL) != 0 &&
                 (features & WELLFORMED) != 0 &&
                 (features & COMMENTS) != 0) {
                     return Boolean.TRUE;
                 }                 
                 return Boolean.FALSE; 
        } else if (name.equalsIgnoreCase(Constants.DOM_CANONICAL_FORM)
                || name.equalsIgnoreCase(Constants.DOM_VALIDATE_IF_SCHEMA)
                || name.equalsIgnoreCase(Constants.DOM_CHECK_CHAR_NORMALIZATION)
                || name.equalsIgnoreCase(Constants.DOM_VALIDATE)
                || name.equalsIgnoreCase(Constants.DOM_VALIDATE_IF_SCHEMA)
                || name.equalsIgnoreCase(Constants.DOM_DATATYPE_NORMALIZATION)) {
            return Boolean.FALSE;
        } else if (name.equalsIgnoreCase(Constants.DOM_ERROR_HANDLER)) {
            return fErrorHandler;
        } else if (
            name.equalsIgnoreCase(Constants.DOM_RESOURCE_RESOLVER)
                || name.equalsIgnoreCase(Constants.DOM_SCHEMA_LOCATION)
                || name.equalsIgnoreCase(Constants.DOM_SCHEMA_TYPE)) {
            String msg =
                DOMMessageFormatter.formatMessage(
                    DOMMessageFormatter.DOM_DOMAIN,
                    "FEATURE_NOT_SUPPORTED",
                    new Object[] { name });
            throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
        } else {
            String msg =
                DOMMessageFormatter.formatMessage(
                    DOMMessageFormatter.DOM_DOMAIN,
                    "FEATURE_NOT_FOUND",
                    new Object[] { name });
            throw new DOMException(DOMException.NOT_FOUND_ERR, msg);
        }
    }


    /**
     * DOM L3 EXPERIMENTAL:
     *  Serialize the specified node as described above in the description of
     * <code>LSSerializer</code>. The result of serializing the node is
     * returned as a string. Writing a Document or Entity node produces a
     * serialized form that is well formed XML. Writing other node types
     * produces a fragment of text in a form that is not fully defined by
     * this document, but that should be useful to a human for debugging or
     * diagnostic purposes.
     * @param wnode  The node to be written.
     * @return  Returns the serialized data
     * @exception DOMException
     *    DOMSTRING_SIZE_ERR: The resulting string is too long to fit in a
     *   <code>DOMString</code>.
     * @exception LSException
     *    SERIALIZE_ERR: Unable to serialize the node.  DOM applications should
     *    attach a <code>DOMErrorHandler</code> using the parameter 
     *    &quot;<i>error-handler</i>&quot; to get details on error.
     */
    public String writeToString(Node wnode) throws DOMException, LSException {
        // determine which serializer to use:
        Document doc = (wnode.getNodeType() == Node.DOCUMENT_NODE)?(Document)wnode:wnode.getOwnerDocument();
        Method getVersion = null;
        XMLSerializer ser = null;
        String ver = null;
        // this should run under JDK 1.1.8...
        try {
            getVersion = doc.getClass().getMethod("getXmlVersion", new Class[]{});
            if(getVersion != null ) {
                ver = (String)getVersion.invoke(doc, (Object[]) null);
            }
        } catch (Exception e) {
            // no way to test the version...
            // ignore the exception
        }
        if(ver != null && ver.equals("1.1")) {
            if(xml11Serializer == null) {
                xml11Serializer = new XML11Serializer();
                initSerializer(xml11Serializer);
            }
            // copy setting from "main" serializer to XML 1.1 serializer
            copySettings(serializer, xml11Serializer);
            ser = xml11Serializer;
        } else {
            ser = serializer;
        }

        StringWriter destination = new StringWriter();
        try {
            prepareForSerialization(ser, wnode);
            ser._format.setEncoding("UTF-16");
            ser.setOutputCharStream(destination);
            if (wnode.getNodeType() == Node.DOCUMENT_NODE) {
                ser.serialize((Document)wnode);
            }
            else if (wnode.getNodeType() == Node.DOCUMENT_FRAGMENT_NODE) {
                ser.serialize((DocumentFragment)wnode);
            }
            else if (wnode.getNodeType() == Node.ELEMENT_NODE) {
                ser.serialize((Element)wnode);
            }
            else if (wnode.getNodeType() == Node.TEXT_NODE || 
                    wnode.getNodeType() == Node.COMMENT_NODE ||
                    wnode.getNodeType() == Node.ENTITY_REFERENCE_NODE ||
                    wnode.getNodeType() == Node.CDATA_SECTION_NODE ||
                    wnode.getNodeType() == Node.PROCESSING_INSTRUCTION_NODE ) {
                ser.serialize(wnode);
            }
            else {
                String msg = DOMMessageFormatter.formatMessage(
                    DOMMessageFormatter.SERIALIZER_DOMAIN, 
                    "unable-to-serialize-node", null);
                if (ser.fDOMErrorHandler != null) {
                    DOMErrorImpl error = new DOMErrorImpl();
                    error.fType = "unable-to-serialize-node";
                    error.fMessage = msg;
                    error.fSeverity = DOMError.SEVERITY_FATAL_ERROR;
                    ser.fDOMErrorHandler.handleError(error);
                }
                throw new LSException(LSException.SERIALIZE_ERR, msg);
            }
        } catch (LSException lse) {
            // Rethrow LSException.
            throw lse;
        } catch (RuntimeException e) {
            if (e == DOMNormalizer.abort){
                // stopped at user request
                return null;
            }
            throw new LSException(LSException.SERIALIZE_ERR, e.toString());            
        } catch (IOException ioe) {
            // REVISIT: A generic IOException doesn't provide enough information
            // to determine that the serialized document is too large to fit
            // into a string. This could have thrown for some other reason. -- mrglavas
            String msg = DOMMessageFormatter.formatMessage(
                DOMMessageFormatter.DOM_DOMAIN,
                "STRING_TOO_LONG",
                new Object[] { ioe.getMessage()});
            throw new DOMException(DOMException.DOMSTRING_SIZE_ERR,msg);
        }
        
        return destination.toString();
    }

    /**
     * DOM L3 EXPERIMENTAL:
     * The end-of-line sequence of characters to be used in the XML being
     * written out. The only permitted values are these:
     * <dl>
     * <dt><code>null</code></dt>
     * <dd>
     * Use a default end-of-line sequence. DOM implementations should choose
     * the default to match the usual convention for text files in the
     * environment being used. Implementations must choose a default
     * sequence that matches one of those allowed by  2.11 "End-of-Line
     * Handling". </dd>
     * <dt>CR</dt>
     * <dd>The carriage-return character (#xD).</dd>
     * <dt>CR-LF</dt>
     * <dd> The
     * carriage-return and line-feed characters (#xD #xA). </dd>
     * <dt>LF</dt>
     * <dd> The line-feed
     * character (#xA). </dd>
     * </dl>
     * <br>The default value for this attribute is <code>null</code>.
     */
    public void setNewLine(String newLine) {
        serializer._format.setLineSeparator(newLine);
    }


    /**
     * DOM L3 EXPERIMENTAL:
     * The end-of-line sequence of characters to be used in the XML being
     * written out. The only permitted values are these:
     * <dl>
     * <dt><code>null</code></dt>
     * <dd>
     * Use a default end-of-line sequence. DOM implementations should choose
     * the default to match the usual convention for text files in the
     * environment being used. Implementations must choose a default
     * sequence that matches one of those allowed by  2.11 "End-of-Line
     * Handling". </dd>
     * <dt>CR</dt>
     * <dd>The carriage-return character (#xD).</dd>
     * <dt>CR-LF</dt>
     * <dd> The
     * carriage-return and line-feed characters (#xD #xA). </dd>
     * <dt>LF</dt>
     * <dd> The line-feed
     * character (#xA). </dd>
     * </dl>
     * <br>The default value for this attribute is <code>null</code>.