Examples with DOM3Serializer org.apache.xml.serializer.DOM3Serializer used on opensource projects

Example 6 with DOM3Serializer

use of org.apache.xml.serializer.DOM3Serializer in project robovm by robovm.

the class LSSerializerImpl method write.

/** 
     * Serializes the specified node to the specified LSOutput and returns true if the Node 
     * was successfully serialized. 
     * 
     * @see org.w3c.dom.ls.LSSerializer#write(org.w3c.dom.Node, org.w3c.dom.ls.LSOutput)
     * @since DOM Level 3
     * @param nodeArg The Node to serialize.
     * @throws org.w3c.dom.ls.LSException SERIALIZE_ERR: Raised if the 
     * LSSerializer was unable to serialize the node.
     *      
     */
public boolean write(Node nodeArg, LSOutput destination) throws LSException {
    // If the destination is null
    if (destination == null) {
        String msg = Utils.messages.createMessage(MsgKey.ER_NO_OUTPUT_SPECIFIED, null);
        if (fDOMErrorHandler != null) {
            fDOMErrorHandler.handleError(new DOMErrorImpl(DOMError.SEVERITY_FATAL_ERROR, msg, MsgKey.ER_NO_OUTPUT_SPECIFIED));
        }
        throw new LSException(LSException.SERIALIZE_ERR, msg);
    }
    // If nodeArg is null, return false.  Should we throw and LSException instead?
    if (nodeArg == null) {
        return false;
    }
    // Obtain a reference to the serializer to use
    // Serializer serializer = getXMLSerializer(xmlVersion);
    Serializer serializer = fXMLSerializer;
    serializer.reset();
    // If the node has not been seen
    if (nodeArg != fVisitedNode) {
        // Determine the XML Document version of the Node 
        String xmlVersion = getXMLVersion(nodeArg);
        // Determine the encoding: 1.LSOutput.encoding, 2.Document.inputEncoding, 3.Document.xmlEncoding. 
        fEncoding = destination.getEncoding();
        if (fEncoding == null) {
            fEncoding = getInputEncoding(nodeArg);
            fEncoding = fEncoding != null ? fEncoding : getXMLEncoding(nodeArg) == null ? "UTF-8" : getXMLEncoding(nodeArg);
        }
        // Note: The serializer defaults to UTF-8 when created
        if (!Encodings.isRecognizedEncoding(fEncoding)) {
            String msg = Utils.messages.createMessage(MsgKey.ER_UNSUPPORTED_ENCODING, null);
            if (fDOMErrorHandler != null) {
                fDOMErrorHandler.handleError(new DOMErrorImpl(DOMError.SEVERITY_FATAL_ERROR, msg, MsgKey.ER_UNSUPPORTED_ENCODING));
            }
            throw new LSException(LSException.SERIALIZE_ERR, msg);
        }
        serializer.getOutputFormat().setProperty("version", xmlVersion);
        // Set the output encoding and xml version properties
        fDOMConfigProperties.setProperty(DOMConstants.S_XERCES_PROPERTIES_NS + DOMConstants.S_XML_VERSION, xmlVersion);
        fDOMConfigProperties.setProperty(DOMConstants.S_XSL_OUTPUT_ENCODING, fEncoding);
        // serialized.
        if ((nodeArg.getNodeType() != Node.DOCUMENT_NODE || nodeArg.getNodeType() != Node.ELEMENT_NODE || nodeArg.getNodeType() != Node.ENTITY_NODE) && ((fFeatures & XMLDECL) != 0)) {
            fDOMConfigProperties.setProperty(DOMConstants.S_XSL_OUTPUT_OMIT_XML_DECL, DOMConstants.DOM3_DEFAULT_FALSE);
        }
        fVisitedNode = nodeArg;
    }
    // Update the serializer properties
    fXMLSerializer.setOutputFormat(fDOMConfigProperties);
    // 
    try {
        // The LSSerializer will use the LSOutput object to determine 
        // where to serialize the output to in the following order the  
        // first one that is not null and not an empty string will be    
        // used: 1.LSOutput.characterStream, 2.LSOutput.byteStream,   
        // 3. LSOutput.systemId 
        // 1.LSOutput.characterStream
        Writer writer = destination.getCharacterStream();
        if (writer == null) {
            // 2.LSOutput.byteStream
            OutputStream outputStream = destination.getByteStream();
            if (outputStream == null) {
                // 3. LSOutput.systemId
                String uri = destination.getSystemId();
                if (uri == null) {
                    String msg = Utils.messages.createMessage(MsgKey.ER_NO_OUTPUT_SPECIFIED, null);
                    if (fDOMErrorHandler != null) {
                        fDOMErrorHandler.handleError(new DOMErrorImpl(DOMError.SEVERITY_FATAL_ERROR, msg, MsgKey.ER_NO_OUTPUT_SPECIFIED));
                    }
                    throw new LSException(LSException.SERIALIZE_ERR, msg);
                } else {
                    // Expand the System Id and obtain an absolute URI for it.
                    String absoluteURI = SystemIDResolver.getAbsoluteURI(uri);
                    URL url = new URL(absoluteURI);
                    OutputStream urlOutStream = null;
                    String protocol = url.getProtocol();
                    String host = url.getHost();
                    // lower case in scheme names (e.g., allow "HTTP" as well as "http").
                    if (protocol.equalsIgnoreCase("file") && (host == null || host.length() == 0 || host.equals("localhost"))) {
                        // do we also need to check for host.equals(hostname)
                        urlOutStream = new FileOutputStream(getPathWithoutEscapes(url.getPath()));
                    } else {
                        // This should support URL's whose schemes are mentioned in 
                        // RFC1738 other than file
                        URLConnection urlCon = url.openConnection();
                        urlCon.setDoInput(false);
                        urlCon.setDoOutput(true);
                        urlCon.setUseCaches(false);
                        urlCon.setAllowUserInteraction(false);
                        // When writing to a HTTP URI, a HTTP PUT is performed.
                        if (urlCon instanceof HttpURLConnection) {
                            HttpURLConnection httpCon = (HttpURLConnection) urlCon;
                            httpCon.setRequestMethod("PUT");
                        }
                        urlOutStream = urlCon.getOutputStream();
                    }
                    // set the OutputStream to that obtained from the systemId
                    serializer.setOutputStream(urlOutStream);
                }
            } else {
                // 2.LSOutput.byteStream
                serializer.setOutputStream(outputStream);
            }
        } else {
            // 1.LSOutput.characterStream
            serializer.setWriter(writer);
        }
        // Use this hack till Xalan support JAXP1.3
        if (fDOMSerializer == null) {
            fDOMSerializer = (DOM3Serializer) serializer.asDOM3Serializer();
        }
        // Set the error handler on the DOM3Serializer interface implementation
        if (fDOMErrorHandler != null) {
            fDOMSerializer.setErrorHandler(fDOMErrorHandler);
        }
        // Set the filter on the DOM3Serializer interface implementation
        if (fSerializerFilter != null) {
            fDOMSerializer.setNodeFilter(fSerializerFilter);
        }
        // Set the NewLine character to be used
        fDOMSerializer.setNewLine(fEndOfLine.toCharArray());
        // Serializer your DOM, where node is an org.w3c.dom.Node
        // Assuming that Xalan's serializer can serialize any type of DOM node
        fDOMSerializer.serializeDOM3(nodeArg);
    } catch (UnsupportedEncodingException ue) {
        String msg = Utils.messages.createMessage(MsgKey.ER_UNSUPPORTED_ENCODING, null);
        if (fDOMErrorHandler != null) {
            fDOMErrorHandler.handleError(new DOMErrorImpl(DOMError.SEVERITY_FATAL_ERROR, msg, MsgKey.ER_UNSUPPORTED_ENCODING, ue));
        }
        throw (LSException) createLSException(LSException.SERIALIZE_ERR, ue).fillInStackTrace();
    } catch (LSException lse) {
        // Rethrow LSException.
        throw lse;
    } catch (RuntimeException e) {
        throw (LSException) createLSException(LSException.SERIALIZE_ERR, e).fillInStackTrace();
    } catch (Exception e) {
        if (fDOMErrorHandler != null) {
            fDOMErrorHandler.handleError(new DOMErrorImpl(DOMError.SEVERITY_FATAL_ERROR, e.getMessage(), null, e));
        }
        throw (LSException) createLSException(LSException.SERIALIZE_ERR, e).fillInStackTrace();
    }
    return true;
}