libjava/classpath/gnu/xml/dom/DomDocumentBuilder.java

   1 /* DomDocumentBuilder.java --
   2    Copyright (C) 2004,2006 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38 package gnu.xml.dom;
  39
  40 import java.io.File;
  41 import java.io.InputStream;
  42 import java.io.IOException;
  43 import java.io.Reader;
  44 import java.net.MalformedURLException;
  45 import java.net.URL;
  46 import javax.xml.parsers.DocumentBuilder;
  47 import org.w3c.dom.Document;
  48 import org.w3c.dom.DOMConfiguration;
  49 import org.w3c.dom.DOMImplementation;
  50 import org.w3c.dom.ls.DOMImplementationLS;
  51 import org.w3c.dom.ls.LSInput;
  52 import org.w3c.dom.ls.LSParser;
  53 import org.xml.sax.EntityResolver;
  54 import org.xml.sax.ErrorHandler;
  55 import org.xml.sax.InputSource;
  56 import org.xml.sax.SAXException;
  57
  58 /**
  59  * Document builder using the GNU DOM Load &amp; Save implementation.
  60  *
  61  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
  62  */
  63 class DomDocumentBuilder
  64   extends DocumentBuilder
  65 {
  66
  67   final DOMImplementation impl;
  68   final DOMImplementationLS ls;
  69   final LSParser parser;
  70
  71   DomDocumentBuilder(DOMImplementation impl,
  72                      DOMImplementationLS ls,
  73                      LSParser parser)
  74   {
  75     this.impl = impl;
  76     this.ls = ls;
  77     this.parser = parser;
  78   }
  79
  80   public boolean isNamespaceAware()
  81   {
  82     DOMConfiguration config = parser.getDomConfig();
  83     return ((Boolean) config.getParameter("namespaces")).booleanValue();
  84   }
  85
  86   public boolean isValidating()
  87   {
  88     DOMConfiguration config = parser.getDomConfig();
  89     return ((Boolean) config.getParameter("validating")).booleanValue();
  90   }
  91
  92   public boolean isXIncludeAware()
  93   {
  94     DOMConfiguration config = parser.getDomConfig();
  95     return ((Boolean) config.getParameter("xinclude-aware")).booleanValue();
  96   }
  97
  98   public void setEntityResolver(EntityResolver resolver)
  99   {
 100     DOMConfiguration config = parser.getDomConfig();
 101     config.setParameter("entity-resolver", resolver);
 102   }
 103
 104   public void setErrorHandler(ErrorHandler handler)
 105   {
 106     DOMConfiguration config = parser.getDomConfig();
 107     config.setParameter("error-handler", handler);
 108   }
 109
 110   public DOMImplementation getDOMImplementation()
 111   {
 112     return impl;
 113   }
 114
 115   public Document newDocument()
 116   {
 117     return impl.createDocument(null, null, null);
 118   }
 119
 120   public Document parse(InputStream in)
 121     throws SAXException, IOException
 122   {
 123     LSInput input = ls.createLSInput();
 124     input.setByteStream(in);
 125     return parser.parse(input);
 126   }
 127
 128   public Document parse(InputStream in, String systemId)
 129     throws SAXException, IOException
 130   {
 131     LSInput input = ls.createLSInput();
 132     input.setByteStream(in);
 133     input.setSystemId(systemId);
 134     return parser.parse(input);
 135   }
 136
 137   public Document parse(String systemId)
 138     throws SAXException, IOException
 139   {
 140     return parser.parseURI(systemId);
 141   }
 142
 143   public Document parse(InputSource is)
 144     throws SAXException, IOException
 145   {
 146     LSInput input = ls.createLSInput();
 147     String systemId = is.getSystemId();
 148     InputStream in = is.getByteStream();
 149     if (in != null)
 150       {
 151         input.setByteStream(in);
 152       }
 153     else
 154       {
 155         Reader reader = is.getCharacterStream();
 156         if (reader != null)
 157           {
 158             input.setCharacterStream(reader);
 159           }
 160         else
 161           {
 162             try
 163               {
 164                 URL url = new URL(systemId);
 165                 input.setByteStream(url.openStream());
 166               }
 167             catch (MalformedURLException e)
 168               {
 169                 // Maybe this is a relative file URL
 170                 File cwd = new File(System.getProperty("user.dir"));
 171                 URL url = new URL(cwd.toURL(), systemId);
 172                 input.setByteStream(url.openStream());
 173               }
 174           }
 175       }
 176     input.setPublicId(is.getPublicId());
 177     input.setSystemId(systemId);
 178     input.setEncoding(is.getEncoding());
 179     return parser.parse(input);
 180   }
 181
 182 }
 183