domserializerimpl.java

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/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999-2004 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 2002, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */



package com.sun.org.apache.xml.internal.serialize;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.lang.reflect.Method;
import java.util.Enumeration;
import java.util.Hashtable;
import java.net.URI;

import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.Vector;

import com.sun.org.apache.xerces.internal.dom.AttrImpl;
import com.sun.org.apache.xerces.internal.dom.AttributeMap;
import com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl;
import com.sun.org.apache.xerces.internal.dom.DOMErrorImpl;
import com.sun.org.apache.xerces.internal.dom.DOMLocatorImpl;
import com.sun.org.apache.xerces.internal.dom.DOMMessageFormatter;
import com.sun.org.apache.xerces.internal.dom.DOMNormalizer;
import com.sun.org.apache.xerces.internal.dom.DOMStringListImpl;
import com.sun.org.apache.xerces.internal.impl.Constants;
import com.sun.org.apache.xerces.internal.impl.XMLEntityManager;
import com.sun.org.apache.xerces.internal.util.NamespaceSupport;
import com.sun.org.apache.xerces.internal.util.SymbolTable;
import org.w3c.dom.DOMConfiguration;
import org.w3c.dom.DOMError;
import org.w3c.dom.DOMErrorHandler;
import com.sun.org.apache.xerces.internal.util.XML11Char;
import com.sun.org.apache.xerces.internal.util.XMLChar;
import org.w3c.dom.Attr;
import org.w3c.dom.Comment;
import org.w3c.dom.DOMException;
import org.w3c.dom.DOMStringList;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.ls.LSException;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.ls.LSSerializerFilter;


/**
 * EXPERIMENTAL: Implemenatation of DOM Level 3 org.w3c.ls.LSSerializer  by delegating serialization
 * calls to <CODE>XMLSerializer</CODE>.
 * LSSerializer provides an API for serializing (writing) a DOM document out in an
 * XML document. The XML data is written to an output stream.
 * During serialization of XML data, namespace fixup is done when possible as
 * defined in DOM Level 3 Core, Appendix B.
 *
 * @author Elena Litani, IBM
 * @author Gopal Sharma, Sun Microsystems
 * @author Arun Yadav, Sun Microsystems
 * @version $Id: DOMSerializerImpl.java,v 1.21 2004/04/22 20:39:04 mrglavas Exp $
 */
public class DOMSerializerImpl implements LSSerializer, DOMConfiguration {

    // TODO: When DOM Level 3 goes to REC replace method calls using
    // reflection for: getXmlEncoding, getInputEncoding and getXmlEncoding
    // with regular static calls on the Document object.
	
    // data
    // serializer
    private XMLSerializer serializer;

    // XML 1.1 serializer
    private XML11Serializer xml11Serializer;
    
    //Recognized parameters
    private DOMStringList fRecognizedParameters;
    
    /** REVISIT: Currently we handle 3 different configurations, would be nice just have one configuration
     * that has different recognized parameters depending if it is used in Core/LS. 
     */
    protected short features = 0;

    protected final static short NAMESPACES          = 0x1<<0;
    protected final static short WELLFORMED          = 0x1<<1;
    protected final static short ENTITIES            = 0x1<<2;
    protected final static short CDATA               = 0x1<<3;
    protected final static short SPLITCDATA          = 0x1<<4;
    protected final static short COMMENTS            = 0x1<<5;
    protected final static short DISCARDDEFAULT      = 0x1<<6;
    protected final static short INFOSET             = 0x1<<7;
    protected final static short XMLDECL             = 0x1<<8;
    protected final static short NSDECL              = 0x1<<9;
    protected final static short DOM_ELEMENT_CONTENT_WHITESPACE = 0x1<<10;
    
    // well-formness checking
    private DOMErrorHandler fErrorHandler = null;    
    private final DOMErrorImpl fError = new DOMErrorImpl();
    private final DOMLocatorImpl fLocator = new DOMLocatorImpl();
    private static final RuntimeException abort = new RuntimeException();

    /**
     * Constructs a new LSSerializer.
     * The constructor turns on the namespace support in <code>XMLSerializer</code> and
     * initializes the following fields: fNSBinder, fLocalNSBinder, fSymbolTable,
     * fEmptySymbol, fXmlSymbol, fXmlnsSymbol, fNamespaceCounter, fFeatures.
     */
    public DOMSerializerImpl() {
        // set default features
        features |= NAMESPACES;
        features |= ENTITIES;
        features |= COMMENTS;
        features |= CDATA;
        features |= SPLITCDATA;
        features |= WELLFORMED;
        features |= NSDECL;
        features |= DOM_ELEMENT_CONTENT_WHITESPACE;
        features |= DISCARDDEFAULT;
        features |= XMLDECL;
             
        serializer = new XMLSerializer();
        initSerializer(serializer);
    }



    //
    // LSSerializer methods
    //

    public DOMConfiguration getDomConfig(){
        return this;
    }

    /** DOM L3-EXPERIMENTAL:
     * Setter for boolean and object parameters
     */
    public void setParameter(String name, Object value) throws DOMException {
        if (value instanceof Boolean) {
            boolean state = ((Boolean) value).booleanValue();
            if (name.equalsIgnoreCase(Constants.DOM_INFOSET)){
                if (state){
                    features &=~ENTITIES;
                    features &=~CDATA;
                    features |=NAMESPACES;
                    features |=WELLFORMED;
                    features |=COMMENTS;                 
                }
                // false does not have any effect
            } else if (name.equalsIgnoreCase(Constants.DOM_XMLDECL)) {
                features =
                    (short) (state ? features | XMLDECL : features & ~XMLDECL);                
            } else if (name.equalsIgnoreCase(Constants.DOM_NAMESPACES)) {
                features =
                    (short) (state
                        ? features | NAMESPACES
                        : features & ~NAMESPACES);
                serializer.fNamespaces = state;
            } else if (name.equalsIgnoreCase(Constants.DOM_SPLIT_CDATA)) {
                features =
                    (short) (state
                        ? features | SPLITCDATA
                        : features & ~SPLITCDATA);
            } else if (name.equalsIgnoreCase(Constants.DOM_DISCARD_DEFAULT_CONTENT)) {
                features =
                    (short) (state
                        ? features | DISCARDDEFAULT
                        : features & ~DISCARDDEFAULT);
            } else if (name.equalsIgnoreCase(Constants.DOM_WELLFORMED)) {
                features =
                    (short) (state
                        ? features | WELLFORMED
                        : features & ~WELLFORMED);
            } else if (name.equalsIgnoreCase(Constants.DOM_ENTITIES)){
                features =
                    (short) (state
                        ? features | ENTITIES
                        : features & ~ENTITIES);
            }
            else if (name.equalsIgnoreCase(Constants.DOM_CDATA_SECTIONS)){
                features =
                    (short) (state
                        ? features | CDATA
                        : features & ~CDATA);
                        }
            else if (name.equalsIgnoreCase(Constants.DOM_COMMENTS)){
                features =
                     (short) (state
                         ? features | COMMENTS
                         : features & ~COMMENTS);
            }
                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_FORMAT_PRETTY_PRINT)){
                // true is not supported
                if (state) {
                    String msg =
                        DOMMessageFormatter.formatMessage(
                            DOMMessageFormatter.DOM_DOMAIN,
                            "FEATURE_NOT_SUPPORTED",
                            new Object[] { name });
                    throw new DOMException(DOMException.NOT_SUPPORTED_ERR, msg);
                }
            } else if (
                name.equalsIgnoreCase(Constants.DOM_NAMESPACE_DECLARATIONS)
                    || name.equalsIgnoreCase(Constants.DOM_ELEMENT_CONTENT_WHITESPACE)
                    || name.equalsIgnoreCase(Constants.DOM_IGNORE_UNKNOWN_CHARACTER_DENORMALIZATIONS)) {
                // false is not supported
                if (!state) {
                    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_SUPPORTED_ERR, msg);
            }
        } else if (name.equalsIgnoreCase(Constants.DOM_ERROR_HANDLER)) {
            if (value == null || value instanceof DOMErrorHandler) {
                fErrorHandler = (DOMErrorHandler)value;
            } else {
                // REVISIT: modify error exception to TYPE_MISMATCH