aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.tools.internal.xjc.reader.internalizer;
aoqi@0: 
aoqi@0: import javax.xml.XMLConstants;
aoqi@0: 
aoqi@0: import org.xml.sax.Attributes;
aoqi@0: import org.xml.sax.SAXException;
aoqi@0: import org.xml.sax.SAXNotRecognizedException;
aoqi@0: import org.xml.sax.SAXNotSupportedException;
aoqi@0: import org.xml.sax.XMLReader;
aoqi@0: import org.xml.sax.helpers.AttributesImpl;
aoqi@0: import org.xml.sax.helpers.XMLFilterImpl;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * {@link XMLReader} filter for supporting
aoqi@0:  * <tt>http://xml.org/sax/features/namespace-prefixes</tt> feature.
aoqi@0:  *
aoqi@0:  * @author Kohsuke Kawaguchi
aoqi@0:  */
aoqi@0: final class ContentHandlerNamespacePrefixAdapter extends XMLFilterImpl {
aoqi@0:     /**
aoqi@0:      * True if <tt>http://xml.org/sax/features/namespace-prefixes</tt> is set to true.
aoqi@0:      */
aoqi@0:     private boolean namespacePrefixes = false;
aoqi@0: 
aoqi@0:     private String[] nsBinding = new String[8];
aoqi@0:     private int len;
aoqi@0: 
aoqi@0:     public ContentHandlerNamespacePrefixAdapter() {
aoqi@0:     }
aoqi@0: 
aoqi@0:     public ContentHandlerNamespacePrefixAdapter(XMLReader parent) {
aoqi@0:         setParent(parent);
aoqi@0:     }
aoqi@0: 
aoqi@0:     @Override
aoqi@0:     public boolean getFeature(String name) throws SAXNotRecognizedException, SAXNotSupportedException {
aoqi@0:         if(name.equals(PREFIX_FEATURE))
aoqi@0:             return namespacePrefixes;
aoqi@0:         return super.getFeature(name);
aoqi@0:     }
aoqi@0: 
aoqi@0:     @Override
aoqi@0:     public void setFeature(String name, boolean value) throws SAXNotRecognizedException, SAXNotSupportedException {
aoqi@0:         if(name.equals(PREFIX_FEATURE)) {
aoqi@0:             this.namespacePrefixes = value;
aoqi@0:             return;
aoqi@0:         }
aoqi@0:         if(name.equals(NAMESPACE_FEATURE) && value)
aoqi@0:             return;
aoqi@0:         super.setFeature(name, value);
aoqi@0:     }
aoqi@0: 
aoqi@0: 
aoqi@0:     @Override
aoqi@0:     public void startPrefixMapping(String prefix, String uri) throws SAXException {
aoqi@0:         if (XMLConstants.XML_NS_URI.equals(uri)) return; //xml prefix shall not be declared based on jdk api javadoc
aoqi@0:         if(len==nsBinding.length) {
aoqi@0:             // reallocate
aoqi@0:             String[] buf = new String[nsBinding.length*2];
aoqi@0:             System.arraycopy(nsBinding,0,buf,0,nsBinding.length);
aoqi@0:             nsBinding = buf;
aoqi@0:         }
aoqi@0:         nsBinding[len++] = prefix;
aoqi@0:         nsBinding[len++] = uri;
aoqi@0:         super.startPrefixMapping(prefix,uri);
aoqi@0:     }
aoqi@0: 
aoqi@0:     @Override
aoqi@0:     public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
aoqi@0:         if(namespacePrefixes) {
aoqi@0:             this.atts.setAttributes(atts);
aoqi@0:             // add namespace bindings back as attributes
aoqi@0:             for( int i=0; i<len; i+=2 ) {
aoqi@0:                 String prefix = nsBinding[i];
aoqi@0:                 if(prefix.length()==0)
aoqi@0:                     this.atts.addAttribute(XMLConstants.XML_NS_URI,"xmlns","xmlns","CDATA",nsBinding[i+1]);
aoqi@0:                 else
aoqi@0:                     this.atts.addAttribute(XMLConstants.XML_NS_URI,prefix,"xmlns:"+prefix,"CDATA",nsBinding[i+1]);
aoqi@0:             }
aoqi@0:             atts = this.atts;
aoqi@0:         }
aoqi@0:         len=0;
aoqi@0:         super.startElement(uri, localName, qName, atts);
aoqi@0:     }
aoqi@0: 
aoqi@0:     private final AttributesImpl atts = new AttributesImpl();
aoqi@0: 
aoqi@0:     private static final String PREFIX_FEATURE = "http://xml.org/sax/features/namespace-prefixes";
aoqi@0:     private static final String NAMESPACE_FEATURE = "http://xml.org/sax/features/namespaces";
aoqi@0: }