Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: src/share/classes/com/sun/tools/doclets/internal/toolkit/builders/LayoutParser.java
src/share/classes/com/sun/tools/doclets/internal/toolkit/builders/LayoutParser.java
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| 1 /* | |
| 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. Oracle designates this | |
| 8 * particular file as subject to the "Classpath" exception as provided | |
| 9 * by Oracle in the LICENSE file that accompanied this code. | |
| 10 * | |
| 11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 * accompanied this code). | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License version | |
| 18 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 * | |
| 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 * or visit www.oracle.com if you need additional information or have any | |
| 23 * questions. | |
| 24 */ | |
| 25 package com.sun.tools.doclets.internal.toolkit.builders; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 | |
| 30 import javax.xml.parsers.*; | |
| 31 | |
| 32 import org.xml.sax.*; | |
| 33 import org.xml.sax.helpers.DefaultHandler; | |
| 34 | |
| 35 import com.sun.tools.doclets.internal.toolkit.*; | |
| 36 import com.sun.tools.doclets.internal.toolkit.util.*; | |
| 37 | |
| 38 /** | |
| 39 * Parse the XML that specified the order of operation for the builders. This | |
| 40 * Parser uses SAX parsing. | |
| 41 * | |
| 42 * <p><b>This is NOT part of any supported API. | |
| 43 * If you write code that depends on this, you do so at your own risk. | |
| 44 * This code and its internal interfaces are subject to change or | |
| 45 * deletion without notice.</b> | |
| 46 * | |
| 47 * @author Jamie Ho | |
| 48 * @since 1.5 | |
| 49 * @see SAXParser | |
| 50 */ | |
| 51 public class LayoutParser extends DefaultHandler { | |
| 52 | |
| 53 /** | |
| 54 * The map of XML elements that have been parsed. | |
| 55 */ | |
| 56 private Map<String,XMLNode> xmlElementsMap; | |
| 57 private XMLNode currentNode; | |
| 58 private final Configuration configuration; | |
| 59 private String currentRoot; | |
| 60 private boolean isParsing; | |
| 61 | |
| 62 private LayoutParser(Configuration configuration) { | |
| 63 xmlElementsMap = new HashMap<String,XMLNode>(); | |
| 64 this.configuration = configuration; | |
| 65 } | |
| 66 | |
| 67 /** | |
| 68 * Return an instance of the BuilderXML. | |
| 69 * | |
| 70 * @param configuration the current configuration of the doclet. | |
| 71 * @return an instance of the BuilderXML. | |
| 72 */ | |
| 73 public static LayoutParser getInstance(Configuration configuration) { | |
| 74 return new LayoutParser(configuration); | |
| 75 } | |
| 76 | |
| 77 /** | |
| 78 * Parse the XML specifying the layout of the documentation. | |
| 79 * | |
| 80 * @return the list of XML elements parsed. | |
| 81 */ | |
| 82 public XMLNode parseXML(String root) { | |
| 83 if (xmlElementsMap.containsKey(root)) { | |
| 84 return xmlElementsMap.get(root); | |
| 85 } | |
| 86 try { | |
| 87 currentRoot = root; | |
| 88 isParsing = false; | |
| 89 SAXParserFactory factory = SAXParserFactory.newInstance(); | |
| 90 SAXParser saxParser = factory.newSAXParser(); | |
| 91 InputStream in = configuration.getBuilderXML(); | |
| 92 saxParser.parse(in, this); | |
| 93 return xmlElementsMap.get(root); | |
| 94 } catch (Throwable t) { | |
| 95 t.printStackTrace(); | |
| 96 throw new DocletAbortException(t); | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 /** | |
| 101 * {@inheritDoc} | |
| 102 */ | |
| 103 @Override | |
| 104 public void startElement(String namespaceURI, String sName, String qName, | |
| 105 Attributes attrs) | |
| 106 throws SAXException { | |
| 107 if (isParsing || qName.equals(currentRoot)) { | |
| 108 isParsing = true; | |
| 109 currentNode = new XMLNode(currentNode, qName); | |
| 110 for (int i = 0; i < attrs.getLength(); i++) | |
| 111 currentNode.attrs.put(attrs.getLocalName(i), attrs.getValue(i)); | |
| 112 if (qName.equals(currentRoot)) | |
| 113 xmlElementsMap.put(qName, currentNode); | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 /** | |
| 118 * {@inheritDoc} | |
| 119 */ | |
| 120 @Override | |
| 121 public void endElement(String namespaceURI, String sName, String qName) | |
| 122 throws SAXException { | |
| 123 if (! isParsing) { | |
| 124 return; | |
| 125 } | |
| 126 currentNode = currentNode.parent; | |
| 127 isParsing = ! qName.equals(currentRoot); | |
| 128 } | |
| 129 } |
