mirror of
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8d06274e61
2005-03-26 Chris Burdess <dog@gnu.org> * gnu/xml/dom/DomNode.java (notifyNode): grow listener array as required. 2005-03-13 Michael Koch <konqueror@gmx.de> * gnu/xml/aelfred2/XmlParser.java: Fixed typo. 2005-03-11 Chris Burdess <dog@gnu.org> * gnu/xml/aelfred2/SAXDriver.java: Corrected bug handling URI warnings. 2005-02-27 Chris Burdess <dog@gnu.org> * gnu/xml/aelfred2/JAXPFactory.java, gnu/xml/aelfred2/SAXDriver.java, gnu/xml/aelfred2/XmlParser.java, gnu/xml/aelfred2/XmlReader.java: Applied GNU Classpath source code formatting conventions. Replaced arrays of Object with struct-like classes for easier maintainability. Made SAXDriver.stringInterning package private to allow access from XmlParser inside the loop without a method call overhead. 2005-03-11 Chris Burdess <dog@gnu.org> * gnu/xml/aelfred2/SAXDriver.java: Corrected bug handling URI warnings. From-SVN: r97200
1623 lines
42 KiB
Java
1623 lines
42 KiB
Java
/* SAXDriver.java --
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Copyright (C) 1999,2000,2001,2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version.
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Portions derived from code which carried the following notice:
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Copyright (c) 1997, 1998 by Microstar Software Ltd.
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AElfred is free for both commercial and non-commercial use and
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redistribution, provided that Microstar's copyright and disclaimer are
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retained intact. You are free to modify AElfred for your own use and
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to redistribute AElfred with your modifications, provided that the
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modifications are clearly documented.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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merchantability or fitness for a particular purpose. Please use it AT
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YOUR OWN RISK.
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*/
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package gnu.xml.aelfred2;
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import java.io.*;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.Locale;
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import java.util.Stack;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Enumeration;
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import java.util.Iterator;
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import java.util.List;
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import org.xml.sax.*;
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import org.xml.sax.ext.*;
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import org.xml.sax.helpers.NamespaceSupport;
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/**
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* An enhanced SAX2 version of Microstar's Ælfred XML parser.
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* The enhancements primarily relate to significant improvements in
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* conformance to the XML specification, and SAX2 support. Performance
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* has been improved. See the package level documentation for more
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* information.
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*
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* <table border="1" width='100%' cellpadding='3' cellspacing='0'>
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* <tr bgcolor='#ccccff'>
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* <th><font size='+1'>Name</font></th>
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* <th><font size='+1'>Notes</font></th></tr>
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*
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* <tr><td colspan=2><center><em>Features ... URL prefix is
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* <b>http://xml.org/sax/features/</b></em></center></td></tr>
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*
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* <tr><td>(URL)/external-general-entities</td>
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* <td>Value defaults to <em>true</em></td></tr>
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* <tr><td>(URL)/external-parameter-entities</td>
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* <td>Value defaults to <em>true</em></td></tr>
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* <tr><td>(URL)/is-standalone</td>
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* <td>(PRELIMINARY) Returns true iff the document's parsing
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* has started (some non-error event after <em>startDocument()</em>
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* was reported) and the document's standalone flag is set.</td></tr>
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* <tr><td>(URL)/namespace-prefixes</td>
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* <td>Value defaults to <em>false</em> (but XML 1.0 names are
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* always reported)</td></tr>
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* <tr><td>(URL)/lexical-handler/parameter-entities</td>
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* <td>Value is fixed at <em>true</em></td></tr>
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* <tr><td>(URL)/namespaces</td>
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* <td>Value defaults to <em>true</em></td></tr>
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* <tr><td>(URL)/resolve-dtd-uris</td>
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* <td>(PRELIMINARY) Value defaults to <em>true</em></td></tr>
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* <tr><td>(URL)/string-interning</td>
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* <td>Value is fixed at <em>true</em></td></tr>
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* <tr><td>(URL)/use-attributes2</td>
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* <td>(PRELIMINARY) Value is fixed at <em>true</em></td></tr>
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* <tr><td>(URL)/use-entity-resolver2</td>
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* <td>(PRELIMINARY) Value defaults to <em>true</em></td></tr>
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* <tr><td>(URL)/validation</td>
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* <td>Value is fixed at <em>false</em></td></tr>
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*
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* <tr><td colspan=2><center><em>Handler Properties ... URL prefix is
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* <b>http://xml.org/sax/properties/</b></em></center></td></tr>
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*
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* <tr><td>(URL)/declaration-handler</td>
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* <td>A declaration handler may be provided. </td></tr>
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* <tr><td>(URL)/lexical-handler</td>
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* <td>A lexical handler may be provided. </td></tr>
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* </table>
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*
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* <p>This parser currently implements the SAX1 Parser API, but
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* it may not continue to do so in the future.
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*
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* @author Written by David Megginson (version 1.2a from Microstar)
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* @author Updated by David Brownell <dbrownell@users.sourceforge.net>
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* @see org.xml.sax.Parser
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*/
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final public class SAXDriver
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implements Locator, Attributes2, XMLReader, Parser, AttributeList
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{
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private final DefaultHandler2 base = new DefaultHandler2();
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private XmlParser parser;
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private EntityResolver entityResolver = base;
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private EntityResolver2 resolver2 = null;
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private ContentHandler contentHandler = base;
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private DTDHandler dtdHandler = base;
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private ErrorHandler errorHandler = base;
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private DeclHandler declHandler = base;
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private LexicalHandler lexicalHandler = base;
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private String elementName;
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private Stack entityStack;
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// one vector (of object/struct): faster, smaller
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private List attributesList;
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private boolean namespaces = true;
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private boolean xmlNames = false;
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private boolean extGE = true;
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private boolean extPE = true;
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private boolean resolveAll = true;
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private boolean useResolver2 = true;
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// package private to allow (read-only) access in XmlParser
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boolean stringInterning = true;
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private int attributeCount;
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private boolean attributes;
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private String[] nsTemp;
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private NamespaceSupport prefixStack;
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//
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// Constructor.
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//
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/**
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* Constructs a SAX Parser.
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*/
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public SAXDriver()
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{
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reset();
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}
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private void reset()
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{
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elementName = null;
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entityStack = new Stack();
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attributesList = Collections.synchronizedList(new ArrayList());
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attributeCount = 0;
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attributes = false;
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nsTemp = new String[3];
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prefixStack = null;
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}
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//
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// Implementation of org.xml.sax.Parser.
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//
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/**
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* <b>SAX1</b>: Sets the locale used for diagnostics; currently,
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* only locales using the English language are supported.
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* @param locale The locale for which diagnostics will be generated
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*/
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public void setLocale(Locale locale)
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throws SAXException
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{
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if ("en".equals(locale.getLanguage()))
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{
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return;
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}
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throw new SAXException ("AElfred2 only supports English locales.");
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}
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/**
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* <b>SAX2</b>: Returns the object used when resolving external
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* entities during parsing (both general and parameter entities).
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*/
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public EntityResolver getEntityResolver()
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{
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return (entityResolver == base) ? null : entityResolver;
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}
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/**
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* <b>SAX1, SAX2</b>: Set the entity resolver for this parser.
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* @param handler The object to receive entity events.
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*/
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public void setEntityResolver(EntityResolver resolver)
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{
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if (resolver instanceof EntityResolver2)
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{
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resolver2 = (EntityResolver2) resolver;
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}
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else
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{
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resolver2 = null;
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}
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if (resolver == null)
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{
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resolver = base;
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}
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entityResolver = resolver;
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}
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/**
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* <b>SAX2</b>: Returns the object used to process declarations related
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* to notations and unparsed entities.
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*/
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public DTDHandler getDTDHandler()
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{
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return (dtdHandler == base) ? null : dtdHandler;
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}
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/**
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* <b>SAX1, SAX2</b>: Set the DTD handler for this parser.
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* @param handler The object to receive DTD events.
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*/
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public void setDTDHandler(DTDHandler handler)
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{
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if (handler == null)
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{
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handler = base;
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}
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this.dtdHandler = handler;
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}
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/**
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* <b>SAX1</b>: Set the document handler for this parser. If a
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* content handler was set, this document handler will supplant it.
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* The parser is set to report all XML 1.0 names rather than to
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* filter out "xmlns" attributes (the "namespace-prefixes" feature
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* is set to true).
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*
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* @deprecated SAX2 programs should use the XMLReader interface
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* and a ContentHandler.
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*
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* @param handler The object to receive document events.
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*/
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public void setDocumentHandler(DocumentHandler handler)
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{
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contentHandler = new Adapter(handler);
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xmlNames = true;
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}
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/**
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* <b>SAX2</b>: Returns the object used to report the logical
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* content of an XML document.
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*/
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public ContentHandler getContentHandler()
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{
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return (contentHandler == base) ? null : contentHandler;
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}
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/**
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* <b>SAX2</b>: Assigns the object used to report the logical
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* content of an XML document. If a document handler was set,
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* this content handler will supplant it (but XML 1.0 style name
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* reporting may remain enabled).
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*/
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public void setContentHandler(ContentHandler handler)
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{
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if (handler == null)
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{
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handler = base;
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}
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contentHandler = handler;
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}
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/**
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* <b>SAX1, SAX2</b>: Set the error handler for this parser.
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* @param handler The object to receive error events.
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*/
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public void setErrorHandler(ErrorHandler handler)
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{
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if (handler == null)
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{
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handler = base;
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}
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this.errorHandler = handler;
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}
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/**
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* <b>SAX2</b>: Returns the object used to receive callbacks for XML
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* errors of all levels (fatal, nonfatal, warning); this is never null;
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*/
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public ErrorHandler getErrorHandler()
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{
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return (errorHandler == base) ? null : errorHandler;
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}
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/**
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* <b>SAX1, SAX2</b>: Auxiliary API to parse an XML document, used mostly
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* when no URI is available.
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* If you want anything useful to happen, you should set
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* at least one type of handler.
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* @param source The XML input source. Don't set 'encoding' unless
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* you know for a fact that it's correct.
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* @see #setEntityResolver
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* @see #setDTDHandler
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* @see #setContentHandler
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* @see #setErrorHandler
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* @exception SAXException The handlers may throw any SAXException,
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* and the parser normally throws SAXParseException objects.
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* @exception IOException IOExceptions are normally through through
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* the parser if there are problems reading the source document.
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*/
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public void parse(InputSource source)
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throws SAXException, IOException
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{
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synchronized (base)
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{
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parser = new XmlParser();
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if (namespaces)
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{
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prefixStack = new NamespaceSupport();
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}
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else if (!xmlNames)
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{
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throw new IllegalStateException();
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}
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parser.setHandler(this);
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try
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{
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Reader r = source.getCharacterStream();
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InputStream in = source.getByteStream();
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parser.doParse(source.getSystemId(),
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source.getPublicId(),
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r,
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in,
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source.getEncoding());
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}
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catch (SAXException e)
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{
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throw e;
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}
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catch (IOException e)
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{
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throw e;
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}
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catch (RuntimeException e)
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{
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throw e;
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}
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catch (Exception e)
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{
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throw new SAXParseException(e.getMessage(), this, e);
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}
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finally
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{
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contentHandler.endDocument();
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reset();
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}
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}
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}
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/**
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* <b>SAX1, SAX2</b>: Preferred API to parse an XML document, using a
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* system identifier (URI).
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*/
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public void parse(String systemId)
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throws SAXException, IOException
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{
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parse(new InputSource(systemId));
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}
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//
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// Implementation of SAX2 "XMLReader" interface
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//
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static final String FEATURE = "http://xml.org/sax/features/";
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static final String PROPERTY = "http://xml.org/sax/properties/";
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/**
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* <b>SAX2</b>: Tells the value of the specified feature flag.
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*
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* @exception SAXNotRecognizedException thrown if the feature flag
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* is neither built in, nor yet assigned.
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*/
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public boolean getFeature(String featureId)
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throws SAXNotRecognizedException, SAXNotSupportedException
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{
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if ((FEATURE + "validation").equals(featureId))
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{
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return false;
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}
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// external entities (both types) are optionally included
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if ((FEATURE + "external-general-entities").equals(featureId))
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{
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return extGE;
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}
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if ((FEATURE + "external-parameter-entities").equals(featureId))
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{
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return extPE;
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}
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// element/attribute names are as written in document; no mangling
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if ((FEATURE + "namespace-prefixes").equals(featureId))
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{
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return xmlNames;
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}
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// report element/attribute namespaces?
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if ((FEATURE + "namespaces").equals(featureId))
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{
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return namespaces;
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}
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// all PEs and GEs are reported
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if ((FEATURE + "lexical-handler/parameter-entities").equals(featureId))
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{
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return true;
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}
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// default is true
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if ((FEATURE + "string-interning").equals(featureId))
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{
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return stringInterning;
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}
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// EXTENSIONS 1.1
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// always returns isSpecified info
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if ((FEATURE + "use-attributes2").equals(featureId))
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{
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return true;
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}
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// meaningful between startDocument/endDocument
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if ((FEATURE + "is-standalone").equals(featureId))
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{
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if (parser == null)
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{
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throw new SAXNotSupportedException(featureId);
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}
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return parser.isStandalone();
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}
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// optionally don't absolutize URIs in declarations
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if ((FEATURE + "resolve-dtd-uris").equals(featureId))
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{
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return resolveAll;
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}
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// optionally use resolver2 interface methods, if possible
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if ((FEATURE + "use-entity-resolver2").equals(featureId))
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{
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return useResolver2;
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}
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throw new SAXNotRecognizedException(featureId);
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}
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// package private
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DeclHandler getDeclHandler()
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{
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return declHandler;
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}
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// package private
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boolean resolveURIs()
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{
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return resolveAll;
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}
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/**
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* <b>SAX2</b>: Returns the specified property.
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*
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* @exception SAXNotRecognizedException thrown if the property value
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* is neither built in, nor yet stored.
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*/
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public Object getProperty(String propertyId)
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throws SAXNotRecognizedException
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{
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if ((PROPERTY + "declaration-handler").equals(propertyId))
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{
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return (declHandler == base) ? null : declHandler;
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}
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if ((PROPERTY + "lexical-handler").equals(propertyId))
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{
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return (lexicalHandler == base) ? null : lexicalHandler;
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}
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// unknown properties
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throw new SAXNotRecognizedException(propertyId);
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}
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/**
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* <b>SAX2</b>: Sets the state of feature flags in this parser. Some
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* built-in feature flags are mutable.
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*/
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public void setFeature(String featureId, boolean value)
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throws SAXNotRecognizedException, SAXNotSupportedException
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{
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boolean state;
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// Features with a defined value, we just change it if we can.
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state = getFeature (featureId);
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if (state == value)
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{
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return;
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|
}
|
|
if (parser != null)
|
|
{
|
|
throw new SAXNotSupportedException("not while parsing");
|
|
}
|
|
|
|
if ((FEATURE + "namespace-prefixes").equals(featureId))
|
|
{
|
|
// in this implementation, this only affects xmlns reporting
|
|
xmlNames = value;
|
|
// forcibly prevent illegal parser state
|
|
if (!xmlNames)
|
|
{
|
|
namespaces = true;
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ((FEATURE + "namespaces").equals(featureId))
|
|
{
|
|
namespaces = value;
|
|
// forcibly prevent illegal parser state
|
|
if (!namespaces)
|
|
{
|
|
xmlNames = true;
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ((FEATURE + "external-general-entities").equals(featureId))
|
|
{
|
|
extGE = value;
|
|
return;
|
|
}
|
|
if ((FEATURE + "external-parameter-entities").equals(featureId))
|
|
{
|
|
extPE = value;
|
|
return;
|
|
}
|
|
if ((FEATURE + "resolve-dtd-uris").equals(featureId))
|
|
{
|
|
resolveAll = value;
|
|
return;
|
|
}
|
|
|
|
if ((FEATURE + "use-entity-resolver2").equals(featureId))
|
|
{
|
|
useResolver2 = value;
|
|
return;
|
|
}
|
|
|
|
throw new SAXNotRecognizedException(featureId);
|
|
}
|
|
|
|
/**
|
|
* <b>SAX2</b>: Assigns the specified property. Like SAX1 handlers,
|
|
* these may be changed at any time.
|
|
*/
|
|
public void setProperty(String propertyId, Object value)
|
|
throws SAXNotRecognizedException, SAXNotSupportedException
|
|
{
|
|
// see if the property is recognized
|
|
getProperty(propertyId);
|
|
|
|
// Properties with a defined value, we just change it if we can.
|
|
|
|
if ((PROPERTY + "declaration-handler").equals(propertyId))
|
|
{
|
|
if (value == null)
|
|
{
|
|
declHandler = base;
|
|
}
|
|
else if (!(value instanceof DeclHandler))
|
|
{
|
|
throw new SAXNotSupportedException(propertyId);
|
|
}
|
|
else
|
|
{
|
|
declHandler = (DeclHandler) value;
|
|
}
|
|
return ;
|
|
}
|
|
|
|
if ((PROPERTY + "lexical-handler").equals(propertyId))
|
|
{
|
|
if (value == null)
|
|
{
|
|
lexicalHandler = base;
|
|
}
|
|
else if (!(value instanceof LexicalHandler))
|
|
{
|
|
throw new SAXNotSupportedException(propertyId);
|
|
}
|
|
else
|
|
{
|
|
lexicalHandler = (LexicalHandler) value;
|
|
}
|
|
return;
|
|
}
|
|
|
|
throw new SAXNotSupportedException(propertyId);
|
|
}
|
|
|
|
//
|
|
// This is where the driver receives XmlParser callbacks and translates
|
|
// them into SAX callbacks. Some more callbacks have been added for
|
|
// SAX2 support.
|
|
//
|
|
|
|
void startDocument()
|
|
throws SAXException
|
|
{
|
|
contentHandler.setDocumentLocator(this);
|
|
contentHandler.startDocument();
|
|
attributesList.clear();
|
|
}
|
|
|
|
void xmlDecl(String version,
|
|
String encoding,
|
|
boolean standalone,
|
|
String inputEncoding)
|
|
throws SAXException
|
|
{
|
|
if (contentHandler instanceof ContentHandler2)
|
|
{
|
|
((ContentHandler2) contentHandler).xmlDecl(version,
|
|
encoding,
|
|
standalone,
|
|
inputEncoding);
|
|
}
|
|
}
|
|
|
|
void skippedEntity(String name)
|
|
throws SAXException
|
|
{
|
|
contentHandler.skippedEntity(name);
|
|
}
|
|
|
|
InputSource getExternalSubset(String name, String baseURI)
|
|
throws SAXException, IOException
|
|
{
|
|
if (resolver2 == null || !useResolver2 || !extPE)
|
|
{
|
|
return null;
|
|
}
|
|
return resolver2.getExternalSubset(name, baseURI);
|
|
}
|
|
|
|
InputSource resolveEntity(boolean isPE, String name,
|
|
InputSource in, String baseURI)
|
|
throws SAXException, IOException
|
|
{
|
|
InputSource source;
|
|
|
|
// external entities might be skipped
|
|
if (isPE && !extPE)
|
|
{
|
|
return null;
|
|
}
|
|
if (!isPE && !extGE)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
// ... or not
|
|
lexicalHandler.startEntity(name);
|
|
if (resolver2 != null && useResolver2)
|
|
{
|
|
source = resolver2.resolveEntity(name, in.getPublicId(),
|
|
baseURI, in.getSystemId());
|
|
if (source == null)
|
|
{
|
|
in.setSystemId(absolutize(baseURI,
|
|
in.getSystemId(), false));
|
|
source = in;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
in.setSystemId(absolutize(baseURI, in.getSystemId(), false));
|
|
source = entityResolver.resolveEntity(in.getPublicId(),
|
|
in.getSystemId());
|
|
if (source == null)
|
|
{
|
|
source = in;
|
|
}
|
|
}
|
|
startExternalEntity(name, source.getSystemId(), true);
|
|
return source;
|
|
}
|
|
|
|
// absolutize a system ID relative to the specified base URI
|
|
// (temporarily) package-visible for external entity decls
|
|
String absolutize(String baseURI, String systemId, boolean nice)
|
|
throws MalformedURLException, SAXException
|
|
{
|
|
// FIXME normalize system IDs -- when?
|
|
// - Convert to UTF-8
|
|
// - Map reserved and non-ASCII characters to %HH
|
|
|
|
try
|
|
{
|
|
if (baseURI == null)
|
|
{
|
|
if (XmlParser.uriWarnings)
|
|
{
|
|
warn ("No base URI; hope this SYSTEM id is absolute: "
|
|
+ systemId);
|
|
}
|
|
return new URL(systemId).toString();
|
|
}
|
|
else
|
|
{
|
|
return new URL(new URL(baseURI), systemId).toString();
|
|
}
|
|
}
|
|
catch (MalformedURLException e)
|
|
{
|
|
// Let unknown URI schemes pass through unless we need
|
|
// the JVM to map them to i/o streams for us...
|
|
if (!nice)
|
|
{
|
|
throw e;
|
|
}
|
|
|
|
// sometimes sysids for notations or unparsed entities
|
|
// aren't really URIs...
|
|
warn("Can't absolutize SYSTEM id: " + e.getMessage());
|
|
return systemId;
|
|
}
|
|
}
|
|
|
|
void startExternalEntity(String name, String systemId, boolean stackOnly)
|
|
throws SAXException
|
|
{
|
|
// The following warning was deleted because the application has the
|
|
// option of not setting systemId. Sun's JAXP or Xerces seems to
|
|
// ignore this case.
|
|
/*
|
|
if (systemId == null)
|
|
warn ("URI was not reported to parser for entity " + name);
|
|
*/
|
|
if (!stackOnly) // spliced [dtd] needs startEntity
|
|
{
|
|
lexicalHandler.startEntity(name);
|
|
}
|
|
entityStack.push(systemId);
|
|
}
|
|
|
|
void endExternalEntity(String name)
|
|
throws SAXException
|
|
{
|
|
if (!"[document]".equals(name))
|
|
{
|
|
lexicalHandler.endEntity(name);
|
|
}
|
|
entityStack.pop();
|
|
}
|
|
|
|
void startInternalEntity(String name)
|
|
throws SAXException
|
|
{
|
|
lexicalHandler.startEntity(name);
|
|
}
|
|
|
|
void endInternalEntity(String name)
|
|
throws SAXException
|
|
{
|
|
lexicalHandler.endEntity(name);
|
|
}
|
|
|
|
void doctypeDecl(String name, String publicId, String systemId)
|
|
throws SAXException
|
|
{
|
|
lexicalHandler.startDTD(name, publicId, systemId);
|
|
|
|
// ... the "name" is a declaration and should be given
|
|
// to the DeclHandler (but sax2 doesn't).
|
|
|
|
// the IDs for the external subset are lexical details,
|
|
// as are the contents of the internal subset; but sax2
|
|
// doesn't provide the internal subset "pre-parse"
|
|
}
|
|
|
|
void notationDecl(String name, String publicId, String systemId,
|
|
String baseUri)
|
|
throws SAXException
|
|
{
|
|
try
|
|
{
|
|
dtdHandler.notationDecl(name, publicId,
|
|
(resolveAll && systemId != null)
|
|
? absolutize(baseUri, systemId, true)
|
|
: systemId);
|
|
}
|
|
catch (IOException e)
|
|
{
|
|
// "can't happen"
|
|
throw new SAXParseException(e.getMessage(), this, e);
|
|
}
|
|
}
|
|
|
|
void unparsedEntityDecl(String name, String publicId, String systemId,
|
|
String baseUri, String notation)
|
|
throws SAXException
|
|
{
|
|
try
|
|
{
|
|
dtdHandler.unparsedEntityDecl(name, publicId,
|
|
resolveAll
|
|
? absolutize(baseUri, systemId, true)
|
|
: systemId,
|
|
notation);
|
|
}
|
|
catch (IOException e)
|
|
{
|
|
// "can't happen"
|
|
throw new SAXParseException(e.getMessage(), this, e);
|
|
}
|
|
}
|
|
|
|
void endDoctype()
|
|
throws SAXException
|
|
{
|
|
lexicalHandler.endDTD();
|
|
}
|
|
|
|
private void declarePrefix(String prefix, String uri)
|
|
throws SAXException
|
|
{
|
|
int index = uri.indexOf(':');
|
|
|
|
// many versions of nwalsh docbook stylesheets
|
|
// have bogus URLs; so this can't be an error...
|
|
if (index < 1 && uri.length() != 0)
|
|
{
|
|
warn("relative URI for namespace: " + uri);
|
|
}
|
|
|
|
// FIXME: char [0] must be ascii alpha; chars [1..index]
|
|
// must be ascii alphanumeric or in "+-." [RFC 2396]
|
|
|
|
//Namespace Constraints
|
|
//name for xml prefix must be http://www.w3.org/XML/1998/namespace
|
|
boolean prefixEquality = prefix.equals("xml");
|
|
boolean uriEquality = uri.equals("http://www.w3.org/XML/1998/namespace");
|
|
if ((prefixEquality || uriEquality) && !(prefixEquality && uriEquality))
|
|
{
|
|
fatal("xml is by definition bound to the namespace name " +
|
|
"http://www.w3.org/XML/1998/namespace");
|
|
}
|
|
|
|
//xmlns prefix declaration is illegal but xml prefix declaration is llegal...
|
|
if (prefixEquality && uriEquality)
|
|
{
|
|
return;
|
|
}
|
|
|
|
//name for xmlns prefix must be http://www.w3.org/2000/xmlns/
|
|
prefixEquality = prefix.equals("xmlns");
|
|
uriEquality = uri.equals("http://www.w3.org/2000/xmlns/");
|
|
if ((prefixEquality || uriEquality) && !(prefixEquality && uriEquality))
|
|
{
|
|
fatal("http://www.w3.org/2000/xmlns/ is by definition bound" +
|
|
" to prefix xmlns");
|
|
}
|
|
|
|
//even if the uri is http://www.w3.org/2000/xmlns/
|
|
// it is illegal to declare it
|
|
if (prefixEquality && uriEquality)
|
|
{
|
|
fatal ("declaring the xmlns prefix is illegal");
|
|
}
|
|
|
|
uri = uri.intern();
|
|
prefixStack.declarePrefix(prefix, uri);
|
|
contentHandler.startPrefixMapping(prefix, uri);
|
|
}
|
|
|
|
void attribute(String qname, String value, boolean isSpecified)
|
|
throws SAXException
|
|
{
|
|
if (!attributes)
|
|
{
|
|
attributes = true;
|
|
if (namespaces)
|
|
{
|
|
prefixStack.pushContext();
|
|
}
|
|
}
|
|
|
|
// process namespace decls immediately;
|
|
// then maybe forget this as an attribute
|
|
if (namespaces)
|
|
{
|
|
int index;
|
|
|
|
// default NS declaration?
|
|
if (stringInterning)
|
|
{
|
|
if ("xmlns" == qname)
|
|
{
|
|
declarePrefix("", value);
|
|
if (!xmlNames)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
// NS prefix declaration?
|
|
else if ((index = qname.indexOf(':')) == 5
|
|
&& qname.startsWith("xmlns"))
|
|
{
|
|
String prefix = qname.substring(6);
|
|
|
|
if (prefix.equals(""))
|
|
{
|
|
fatal("missing prefix " +
|
|
"in namespace declaration attribute");
|
|
}
|
|
if (value.length() == 0)
|
|
{
|
|
verror("missing URI in namespace declaration attribute: "
|
|
+ qname);
|
|
}
|
|
else
|
|
{
|
|
declarePrefix(prefix, value);
|
|
}
|
|
if (!xmlNames)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ("xmlns".equals(qname))
|
|
{
|
|
declarePrefix("", value);
|
|
if (!xmlNames)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
// NS prefix declaration?
|
|
else if ((index = qname.indexOf(':')) == 5
|
|
&& qname.startsWith("xmlns"))
|
|
{
|
|
String prefix = qname.substring(6);
|
|
|
|
if (value.length() == 0)
|
|
{
|
|
verror("missing URI in namespace decl attribute: "
|
|
+ qname);
|
|
}
|
|
else
|
|
{
|
|
declarePrefix(prefix, value);
|
|
}
|
|
if (!xmlNames)
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// remember this attribute ...
|
|
attributeCount++;
|
|
|
|
// attribute type comes from querying parser's DTD records
|
|
attributesList.add(new Attribute(qname, value, isSpecified));
|
|
|
|
}
|
|
|
|
void startElement(String elname)
|
|
throws SAXException
|
|
{
|
|
ContentHandler handler = contentHandler;
|
|
|
|
//
|
|
// NOTE: this implementation of namespace support adds something
|
|
// like six percent to parsing CPU time, in a large (~50 MB)
|
|
// document that doesn't use namespaces at all. (Measured by PC
|
|
// sampling, with a bug where endElement processing was omitted.)
|
|
// [Measurement referred to older implementation, older JVM ...]
|
|
//
|
|
// It ought to become notably faster in such cases. Most
|
|
// costs are the prefix stack calling Hashtable.get() (2%),
|
|
// String.hashCode() (1.5%) and about 1.3% each for pushing
|
|
// the context, and two chunks of name processing.
|
|
//
|
|
|
|
if (!attributes)
|
|
{
|
|
if (namespaces)
|
|
{
|
|
prefixStack.pushContext();
|
|
}
|
|
}
|
|
else if (namespaces)
|
|
{
|
|
|
|
// now we can patch up namespace refs; we saw all the
|
|
// declarations, so now we'll do the Right Thing
|
|
Iterator itt = attributesList.iterator();
|
|
while (itt.hasNext())
|
|
{
|
|
Attribute attribute = (Attribute) itt.next();
|
|
String qname = attribute.name;
|
|
int index;
|
|
|
|
// default NS declaration?
|
|
if (stringInterning)
|
|
{
|
|
if ("xmlns" == qname)
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ("xmlns".equals(qname))
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
//Illegal in the new Namespaces Draft
|
|
//should it be only in 1.1 docs??
|
|
if (qname.equals (":"))
|
|
{
|
|
fatal("namespace names consisting of a single colon " +
|
|
"character are invalid");
|
|
}
|
|
index = qname.indexOf(':');
|
|
|
|
// NS prefix declaration?
|
|
if (index == 5 && qname.startsWith("xmlns"))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// it's not a NS decl; patch namespace info items
|
|
if (prefixStack.processName(qname, nsTemp, true) == null)
|
|
{
|
|
fatal("undeclared attribute prefix in: " + qname);
|
|
}
|
|
else
|
|
{
|
|
attribute.nameSpace = nsTemp[0];
|
|
attribute.localName = nsTemp[1];
|
|
}
|
|
}
|
|
}
|
|
|
|
// save element name so attribute callbacks work
|
|
elementName = elname;
|
|
if (namespaces)
|
|
{
|
|
if (prefixStack.processName(elname, nsTemp, false) == null)
|
|
{
|
|
fatal("undeclared element prefix in: " + elname);
|
|
nsTemp[0] = nsTemp[1] = "";
|
|
}
|
|
handler.startElement(nsTemp[0], nsTemp[1], elname, this);
|
|
}
|
|
else
|
|
{
|
|
handler.startElement("", "", elname, this);
|
|
}
|
|
// elementName = null;
|
|
|
|
// elements with no attributes are pretty common!
|
|
if (attributes)
|
|
{
|
|
attributesList.clear();
|
|
attributeCount = 0;
|
|
attributes = false;
|
|
}
|
|
}
|
|
|
|
void endElement(String elname)
|
|
throws SAXException
|
|
{
|
|
ContentHandler handler = contentHandler;
|
|
|
|
if (!namespaces)
|
|
{
|
|
handler.endElement("", "", elname);
|
|
return;
|
|
}
|
|
prefixStack.processName(elname, nsTemp, false);
|
|
handler.endElement(nsTemp[0], nsTemp[1], elname);
|
|
|
|
Enumeration prefixes = prefixStack.getDeclaredPrefixes();
|
|
|
|
while (prefixes.hasMoreElements())
|
|
{
|
|
handler.endPrefixMapping((String) prefixes.nextElement());
|
|
}
|
|
prefixStack.popContext();
|
|
}
|
|
|
|
void startCDATA()
|
|
throws SAXException
|
|
{
|
|
lexicalHandler.startCDATA();
|
|
}
|
|
|
|
void charData(char[] ch, int start, int length)
|
|
throws SAXException
|
|
{
|
|
contentHandler.characters(ch, start, length);
|
|
}
|
|
|
|
void endCDATA()
|
|
throws SAXException
|
|
{
|
|
lexicalHandler.endCDATA();
|
|
}
|
|
|
|
void ignorableWhitespace(char[] ch, int start, int length)
|
|
throws SAXException
|
|
{
|
|
contentHandler.ignorableWhitespace(ch, start, length);
|
|
}
|
|
|
|
void processingInstruction(String target, String data)
|
|
throws SAXException
|
|
{
|
|
contentHandler.processingInstruction(target, data);
|
|
}
|
|
|
|
void comment(char[] ch, int start, int length)
|
|
throws SAXException
|
|
{
|
|
if (lexicalHandler != base)
|
|
{
|
|
lexicalHandler.comment(ch, start, length);
|
|
}
|
|
}
|
|
|
|
void fatal(String message)
|
|
throws SAXException
|
|
{
|
|
SAXParseException fatal;
|
|
|
|
fatal = new SAXParseException(message, this);
|
|
errorHandler.fatalError(fatal);
|
|
|
|
// Even if the application can continue ... we can't!
|
|
throw fatal;
|
|
}
|
|
|
|
// We can safely report a few validity errors that
|
|
// make layered SAX2 DTD validation more conformant
|
|
void verror(String message)
|
|
throws SAXException
|
|
{
|
|
SAXParseException err;
|
|
|
|
err = new SAXParseException(message, this);
|
|
errorHandler.error(err);
|
|
}
|
|
|
|
void warn(String message)
|
|
throws SAXException
|
|
{
|
|
SAXParseException err;
|
|
|
|
err = new SAXParseException(message, this);
|
|
errorHandler.warning(err);
|
|
}
|
|
|
|
//
|
|
// Implementation of org.xml.sax.Attributes.
|
|
//
|
|
|
|
/**
|
|
* <b>SAX1 AttributeList, SAX2 Attributes</b> method
|
|
* (don't invoke on parser);
|
|
*/
|
|
public int getLength()
|
|
{
|
|
return attributesList.size();
|
|
}
|
|
|
|
/**
|
|
* <b>SAX2 Attributes</b> method (don't invoke on parser);
|
|
*/
|
|
public String getURI(int index)
|
|
{
|
|
if (index < 0 || index >= attributesList.size())
|
|
{
|
|
return null;
|
|
}
|
|
return ((Attribute) attributesList.get(index)).nameSpace;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX2 Attributes</b> method (don't invoke on parser);
|
|
*/
|
|
public String getLocalName(int index)
|
|
{
|
|
if (index < 0 || index >= attributesList.size())
|
|
{
|
|
return null;
|
|
}
|
|
Attribute attr = (Attribute) attributesList.get(index);
|
|
// FIXME attr.localName is sometimes null, why?
|
|
if (namespaces && attr.localName == null)
|
|
{
|
|
// XXX fix this here for now
|
|
int ci = attr.name.indexOf(':');
|
|
attr.localName = (ci == -1) ? attr.name :
|
|
attr.name.substring(ci + 1);
|
|
}
|
|
return (attr.localName == null) ? "" : attr.localName;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX2 Attributes</b> method (don't invoke on parser);
|
|
*/
|
|
public String getQName(int index)
|
|
{
|
|
if (index < 0 || index >= attributesList.size())
|
|
{
|
|
return null;
|
|
}
|
|
Attribute attr = (Attribute) attributesList.get(index);
|
|
return (attr.name == null) ? "" : attr.name;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX1 AttributeList</b> method (don't invoke on parser);
|
|
*/
|
|
public String getName(int index)
|
|
{
|
|
return getQName(index);
|
|
}
|
|
|
|
/**
|
|
* <b>SAX1 AttributeList, SAX2 Attributes</b> method
|
|
* (don't invoke on parser);
|
|
*/
|
|
public String getType(int index)
|
|
{
|
|
if (index < 0 || index >= attributesList.size())
|
|
{
|
|
return null;
|
|
}
|
|
String type = parser.getAttributeType(elementName, getQName(index));
|
|
if (type == null)
|
|
{
|
|
return "CDATA";
|
|
}
|
|
// ... use DeclHandler.attributeDecl to see enumerations
|
|
if (type == "ENUMERATION")
|
|
{
|
|
return "NMTOKEN";
|
|
}
|
|
return type;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX1 AttributeList, SAX2 Attributes</b> method
|
|
* (don't invoke on parser);
|
|
*/
|
|
public String getValue(int index)
|
|
{
|
|
if (index < 0 || index >= attributesList.size())
|
|
{
|
|
return null;
|
|
}
|
|
return ((Attribute) attributesList.get(index)).value;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX2 Attributes</b> method (don't invoke on parser);
|
|
*/
|
|
public int getIndex(String uri, String local)
|
|
{
|
|
int length = getLength();
|
|
|
|
for (int i = 0; i < length; i++)
|
|
{
|
|
if (!getURI(i).equals(uri))
|
|
{
|
|
continue;
|
|
}
|
|
if (getLocalName(i).equals(local))
|
|
{
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX2 Attributes</b> method (don't invoke on parser);
|
|
*/
|
|
public int getIndex(String xmlName)
|
|
{
|
|
int length = getLength();
|
|
|
|
for (int i = 0; i < length; i++)
|
|
{
|
|
if (getQName(i).equals(xmlName))
|
|
{
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX2 Attributes</b> method (don't invoke on parser);
|
|
*/
|
|
public String getType(String uri, String local)
|
|
{
|
|
int index = getIndex(uri, local);
|
|
|
|
if (index < 0)
|
|
{
|
|
return null;
|
|
}
|
|
return getType(index);
|
|
}
|
|
|
|
/**
|
|
* <b>SAX1 AttributeList, SAX2 Attributes</b> method
|
|
* (don't invoke on parser);
|
|
*/
|
|
public String getType(String xmlName)
|
|
{
|
|
int index = getIndex(xmlName);
|
|
|
|
if (index < 0)
|
|
{
|
|
return null;
|
|
}
|
|
return getType(index);
|
|
}
|
|
|
|
/**
|
|
* <b>SAX Attributes</b> method (don't invoke on parser);
|
|
*/
|
|
public String getValue(String uri, String local)
|
|
{
|
|
int index = getIndex(uri, local);
|
|
|
|
if (index < 0)
|
|
{
|
|
return null;
|
|
}
|
|
return getValue(index);
|
|
}
|
|
|
|
/**
|
|
* <b>SAX1 AttributeList, SAX2 Attributes</b> method
|
|
* (don't invoke on parser);
|
|
*/
|
|
public String getValue(String xmlName)
|
|
{
|
|
int index = getIndex(xmlName);
|
|
|
|
if (index < 0)
|
|
{
|
|
return null;
|
|
}
|
|
return getValue(index);
|
|
}
|
|
|
|
//
|
|
// Implementation of org.xml.sax.ext.Attributes2
|
|
//
|
|
|
|
/** @return false unless the attribute was declared in the DTD.
|
|
* @throws java.lang.ArrayIndexOutOfBoundsException
|
|
* When the supplied index does not identify an attribute.
|
|
*/
|
|
public boolean isDeclared(int index)
|
|
{
|
|
if (index < 0 || index >= attributeCount)
|
|
{
|
|
throw new ArrayIndexOutOfBoundsException();
|
|
}
|
|
String type = parser.getAttributeType(elementName, getQName(index));
|
|
return (type != null);
|
|
}
|
|
|
|
/** @return false unless the attribute was declared in the DTD.
|
|
* @throws java.lang.IllegalArgumentException
|
|
* When the supplied names do not identify an attribute.
|
|
*/
|
|
public boolean isDeclared(String qName)
|
|
{
|
|
int index = getIndex(qName);
|
|
if (index < 0)
|
|
{
|
|
throw new IllegalArgumentException();
|
|
}
|
|
String type = parser.getAttributeType(elementName, qName);
|
|
return (type != null);
|
|
}
|
|
|
|
/** @return false unless the attribute was declared in the DTD.
|
|
* @throws java.lang.IllegalArgumentException
|
|
* When the supplied names do not identify an attribute.
|
|
*/
|
|
public boolean isDeclared(String uri, String localName)
|
|
{
|
|
int index = getIndex(uri, localName);
|
|
return isDeclared(index);
|
|
}
|
|
|
|
/**
|
|
* <b>SAX-ext Attributes2</b> method (don't invoke on parser);
|
|
*/
|
|
public boolean isSpecified(int index)
|
|
{
|
|
return ((Attribute) attributesList.get(index)).specified;
|
|
}
|
|
|
|
/**
|
|
* <b>SAX-ext Attributes2</b> method (don't invoke on parser);
|
|
*/
|
|
public boolean isSpecified(String uri, String local)
|
|
{
|
|
int index = getIndex (uri, local);
|
|
return isSpecified(index);
|
|
}
|
|
|
|
/**
|
|
* <b>SAX-ext Attributes2</b> method (don't invoke on parser);
|
|
*/
|
|
public boolean isSpecified(String xmlName)
|
|
{
|
|
int index = getIndex (xmlName);
|
|
return isSpecified(index);
|
|
}
|
|
|
|
//
|
|
// Implementation of org.xml.sax.Locator.
|
|
//
|
|
|
|
/**
|
|
* <b>SAX Locator</b> method (don't invoke on parser);
|
|
*/
|
|
public String getPublicId()
|
|
{
|
|
return null; // FIXME track public IDs too
|
|
}
|
|
|
|
/**
|
|
* <b>SAX Locator</b> method (don't invoke on parser);
|
|
*/
|
|
public String getSystemId()
|
|
{
|
|
if (entityStack.empty())
|
|
{
|
|
return null;
|
|
}
|
|
else
|
|
{
|
|
return (String) entityStack.peek();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* <b>SAX Locator</b> method (don't invoke on parser);
|
|
*/
|
|
public int getLineNumber()
|
|
{
|
|
return parser.getLineNumber();
|
|
}
|
|
|
|
/**
|
|
* <b>SAX Locator</b> method (don't invoke on parser);
|
|
*/
|
|
public int getColumnNumber()
|
|
{
|
|
return parser.getColumnNumber();
|
|
}
|
|
|
|
// adapter between SAX2 content handler and SAX1 document handler callbacks
|
|
private static class Adapter
|
|
implements ContentHandler
|
|
{
|
|
|
|
private DocumentHandler docHandler;
|
|
|
|
Adapter(DocumentHandler dh)
|
|
{
|
|
docHandler = dh;
|
|
}
|
|
|
|
public void setDocumentLocator(Locator l)
|
|
{
|
|
docHandler.setDocumentLocator(l);
|
|
}
|
|
|
|
public void startDocument()
|
|
throws SAXException
|
|
{
|
|
docHandler.startDocument();
|
|
}
|
|
|
|
public void processingInstruction(String target, String data)
|
|
throws SAXException
|
|
{
|
|
docHandler.processingInstruction(target, data);
|
|
}
|
|
|
|
public void startPrefixMapping(String prefix, String uri)
|
|
{
|
|
/* ignored */
|
|
}
|
|
|
|
public void startElement(String namespace,
|
|
String local,
|
|
String name,
|
|
Attributes attrs)
|
|
throws SAXException
|
|
{
|
|
docHandler.startElement(name, (AttributeList) attrs);
|
|
}
|
|
|
|
public void characters(char[] buf, int offset, int len)
|
|
throws SAXException
|
|
{
|
|
docHandler.characters(buf, offset, len);
|
|
}
|
|
|
|
public void ignorableWhitespace(char[] buf, int offset, int len)
|
|
throws SAXException
|
|
{
|
|
docHandler.ignorableWhitespace(buf, offset, len);
|
|
}
|
|
|
|
public void skippedEntity(String name)
|
|
{
|
|
/* ignored */
|
|
}
|
|
|
|
public void endElement(String u, String l, String name)
|
|
throws SAXException
|
|
{
|
|
docHandler.endElement(name);
|
|
}
|
|
|
|
public void endPrefixMapping(String prefix)
|
|
{
|
|
/* ignored */
|
|
}
|
|
|
|
public void endDocument()
|
|
throws SAXException
|
|
{
|
|
docHandler.endDocument();
|
|
}
|
|
}
|
|
|
|
private static class Attribute
|
|
{
|
|
|
|
String name;
|
|
String value;
|
|
String nameSpace;
|
|
String localName;
|
|
boolean specified;
|
|
|
|
Attribute(String name, String value, boolean specified)
|
|
{
|
|
this.name = name;
|
|
this.value = value;
|
|
this.nameSpace = "";
|
|
this.specified = specified;
|
|
}
|
|
|
|
}
|
|
|
|
}
|