| /* |
| * 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 javax.xml.stream.XMLStreamException; |
| import javax.xml.stream.XMLStreamWriter; |
| import java.util.Stack; |
| |
| /** |
| * @author Kohsuke Kawaguchi |
| */ |
| public class IndentingXMLStreamWriter extends DelegatingXMLStreamWriter { |
| private final static Object SEEN_NOTHING = new Object(); |
| private final static Object SEEN_ELEMENT = new Object(); |
| private final static Object SEEN_DATA = new Object(); |
| |
| private Object state = SEEN_NOTHING; |
| private Stack<Object> stateStack = new Stack<Object>(); |
| |
| private String indentStep = " "; |
| private int depth = 0; |
| |
| public IndentingXMLStreamWriter(XMLStreamWriter writer) { |
| super(writer); |
| } |
| |
| /** |
| * Return the current indent step. |
| * |
| * <p>Return the current indent step: each start tag will be |
| * indented by this number of spaces times the number of |
| * ancestors that the element has.</p> |
| * |
| * @return The number of spaces in each indentation step, |
| * or 0 or less for no indentation. |
| * @see #setIndentStep(int) |
| * |
| * @deprecated |
| * Only return the length of the indent string. |
| */ |
| public int getIndentStep() { |
| return indentStep.length(); |
| } |
| |
| |
| /** |
| * Set the current indent step. |
| * |
| * @param indentStep The new indent step (0 or less for no |
| * indentation). |
| * @see #getIndentStep() |
| * |
| * @deprecated |
| * Should use the version that takes string. |
| */ |
| public void setIndentStep(int indentStep) { |
| StringBuilder s = new StringBuilder(); |
| for (; indentStep > 0; indentStep--) s.append(' '); |
| setIndentStep(s.toString()); |
| } |
| |
| public void setIndentStep(String s) { |
| this.indentStep = s; |
| } |
| |
| private void onStartElement() throws XMLStreamException { |
| stateStack.push(SEEN_ELEMENT); |
| state = SEEN_NOTHING; |
| if (depth > 0) { |
| super.writeCharacters("\n"); |
| } |
| doIndent(); |
| depth++; |
| } |
| |
| private void onEndElement() throws XMLStreamException { |
| depth--; |
| if (state == SEEN_ELEMENT) { |
| super.writeCharacters("\n"); |
| doIndent(); |
| } |
| state = stateStack.pop(); |
| } |
| |
| private void onEmptyElement() throws XMLStreamException { |
| state = SEEN_ELEMENT; |
| if (depth > 0) { |
| super.writeCharacters("\n"); |
| } |
| doIndent(); |
| } |
| |
| /** |
| * Print indentation for the current level. |
| * |
| * @exception org.xml.sax.SAXException If there is an error |
| * writing the indentation characters, or if a filter |
| * further down the chain raises an exception. |
| */ |
| private void doIndent() throws XMLStreamException { |
| if (depth > 0) { |
| for (int i = 0; i < depth; i++) |
| super.writeCharacters(indentStep); |
| } |
| } |
| |
| |
| public void writeStartDocument() throws XMLStreamException { |
| super.writeStartDocument(); |
| super.writeCharacters("\n"); |
| } |
| |
| public void writeStartDocument(String version) throws XMLStreamException { |
| super.writeStartDocument(version); |
| super.writeCharacters("\n"); |
| } |
| |
| public void writeStartDocument(String encoding, String version) throws XMLStreamException { |
| super.writeStartDocument(encoding, version); |
| super.writeCharacters("\n"); |
| } |
| |
| public void writeStartElement(String localName) throws XMLStreamException { |
| onStartElement(); |
| super.writeStartElement(localName); |
| } |
| |
| public void writeStartElement(String namespaceURI, String localName) throws XMLStreamException { |
| onStartElement(); |
| super.writeStartElement(namespaceURI, localName); |
| } |
| |
| public void writeStartElement(String prefix, String localName, String namespaceURI) throws XMLStreamException { |
| onStartElement(); |
| super.writeStartElement(prefix, localName, namespaceURI); |
| } |
| |
| public void writeEmptyElement(String namespaceURI, String localName) throws XMLStreamException { |
| onEmptyElement(); |
| super.writeEmptyElement(namespaceURI, localName); |
| } |
| |
| public void writeEmptyElement(String prefix, String localName, String namespaceURI) throws XMLStreamException { |
| onEmptyElement(); |
| super.writeEmptyElement(prefix, localName, namespaceURI); |
| } |
| |
| public void writeEmptyElement(String localName) throws XMLStreamException { |
| onEmptyElement(); |
| super.writeEmptyElement(localName); |
| } |
| |
| public void writeEndElement() throws XMLStreamException { |
| onEndElement(); |
| super.writeEndElement(); |
| } |
| |
| public void writeCharacters(String text) throws XMLStreamException { |
| state = SEEN_DATA; |
| super.writeCharacters(text); |
| } |
| |
| public void writeCharacters(char[] text, int start, int len) throws XMLStreamException { |
| state = SEEN_DATA; |
| super.writeCharacters(text, start, len); |
| } |
| |
| public void writeCData(String data) throws XMLStreamException { |
| state = SEEN_DATA; |
| super.writeCData(data); |
| } |
| } |