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src/share/classes/com/sun/tools/doclets/internal/toolkit/builders/LayoutParser.java@959103a6100f (annotated)

src/share/classes/com/sun/tools/doclets/internal/toolkit/builders/LayoutParser.java

Wed, 27 Apr 2016 01:34:52 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:34:52 +0800

changeset 0

959103a6100f

child 2525

2eb010b6cb22

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

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