| /* |
| * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.xml.internal.txw2.output; |
| |
| import com.sun.xml.internal.txw2.TxwException; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.ext.LexicalHandler; |
| import org.xml.sax.helpers.AttributesImpl; |
| |
| import javax.xml.transform.sax.SAXResult; |
| import java.util.Stack; |
| |
| /** |
| * {@link XmlSerializer} for {@link SAXResult} and {@link ContentHandler}. |
| * |
| * @author Ryan.Shoemaker@Sun.COM |
| */ |
| public class SaxSerializer implements XmlSerializer { |
| |
| private final ContentHandler writer; |
| private final LexicalHandler lexical; |
| |
| public SaxSerializer(ContentHandler handler) { |
| this(handler,null,true); |
| } |
| |
| /** |
| * Creates an {@link XmlSerializer} that writes SAX events. |
| * |
| * <p> |
| * Sepcifying a non-null {@link LexicalHandler} allows applications |
| * to write comments and CDATA sections. |
| */ |
| public SaxSerializer(ContentHandler handler,LexicalHandler lex) { |
| this(handler, lex, true); |
| } |
| |
| public SaxSerializer(ContentHandler handler,LexicalHandler lex, boolean indenting) { |
| if(!indenting) { |
| writer = handler; |
| lexical = lex; |
| } else { |
| IndentingXMLFilter indenter = new IndentingXMLFilter(handler, lex); |
| writer = indenter; |
| lexical = indenter; |
| } |
| } |
| |
| public SaxSerializer(SAXResult result) { |
| this(result.getHandler(),result.getLexicalHandler()); |
| } |
| |
| |
| // XmlSerializer implementation |
| |
| public void startDocument() { |
| try { |
| writer.startDocument(); |
| } catch (SAXException e) { |
| throw new TxwException(e); |
| } |
| } |
| |
| // namespace prefix bindings |
| // add in #writeXmlns and fired in #endStartTag |
| private final Stack<String> prefixBindings = new Stack<String>(); |
| |
| public void writeXmlns(String prefix, String uri) { |
| // defend against parsers that pass null in for "xmlns" prefix |
| if (prefix == null) { |
| prefix = ""; |
| } |
| |
| if (prefix.equals("xml")) { |
| return; |
| } |
| |
| prefixBindings.add(uri); |
| prefixBindings.add(prefix); |
| } |
| |
| // element stack |
| private final Stack<String> elementBindings = new Stack<String>(); |
| |
| public void beginStartTag(String uri, String localName, String prefix) { |
| // save element bindings for #endTag |
| elementBindings.add(getQName(prefix, localName)); |
| elementBindings.add(localName); |
| elementBindings.add(uri); |
| } |
| |
| // attribute storage |
| // attrs are buffered in #writeAttribute and sent to the content |
| // handler in #endStartTag |
| private final AttributesImpl attrs = new AttributesImpl(); |
| |
| public void writeAttribute(String uri, String localName, String prefix, StringBuilder value) { |
| attrs.addAttribute(uri, |
| localName, |
| getQName(prefix, localName), |
| "CDATA", |
| value.toString()); |
| } |
| |
| public void endStartTag(String uri, String localName, String prefix) { |
| try { |
| while (prefixBindings.size() != 0) { |
| writer.startPrefixMapping(prefixBindings.pop(), // prefix |
| prefixBindings.pop() // uri |
| ); |
| } |
| |
| writer.startElement(uri, |
| localName, |
| getQName(prefix, localName), |
| attrs); |
| |
| attrs.clear(); |
| } catch (SAXException e) { |
| throw new TxwException(e); |
| } |
| } |
| |
| public void endTag() { |
| try { |
| writer.endElement(elementBindings.pop(), // uri |
| elementBindings.pop(), // localName |
| elementBindings.pop() // qname |
| ); |
| } catch (SAXException e) { |
| throw new TxwException(e); |
| } |
| } |
| |
| public void text(StringBuilder text) { |
| try { |
| writer.characters(text.toString().toCharArray(), 0, text.length()); |
| } catch (SAXException e) { |
| throw new TxwException(e); |
| } |
| } |
| |
| public void cdata(StringBuilder text) { |
| if(lexical==null) |
| throw new UnsupportedOperationException("LexicalHandler is needed to write PCDATA"); |
| |
| try { |
| lexical.startCDATA(); |
| text(text); |
| lexical.endCDATA(); |
| } catch (SAXException e) { |
| throw new TxwException(e); |
| } |
| } |
| |
| public void comment(StringBuilder comment) { |
| try { |
| if(lexical==null) |
| throw new UnsupportedOperationException("LexicalHandler is needed to write comments"); |
| else |
| lexical.comment(comment.toString().toCharArray(), 0, comment.length() ); |
| } catch (SAXException e) { |
| throw new TxwException(e); |
| } |
| } |
| |
| public void endDocument() { |
| try { |
| writer.endDocument(); |
| } catch (SAXException e) { |
| throw new TxwException(e); |
| } |
| } |
| |
| public void flush() { |
| // noop |
| } |
| |
| // other methods |
| private static String getQName(String prefix, String localName) { |
| final String qName; |
| if (prefix == null || prefix.length() == 0) |
| qName = localName; |
| else |
| qName = prefix + ':' + localName; |
| |
| return qName; |
| } |
| } |