| /* GnomeDocumentBuilder.java - |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.xml.libxmlj.dom; |
| |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.net.URL; |
| import javax.xml.parsers.DocumentBuilder; |
| |
| import org.w3c.dom.Document; |
| import org.w3c.dom.DocumentType; |
| import org.w3c.dom.DOMImplementation; |
| import org.xml.sax.EntityResolver; |
| import org.xml.sax.ErrorHandler; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.Locator; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.SAXParseException; |
| |
| import gnu.xml.libxmlj.util.NamedInputStream; |
| import gnu.xml.libxmlj.util.StandaloneDocumentType; |
| import gnu.xml.libxmlj.util.StandaloneLocator; |
| import gnu.xml.libxmlj.util.XMLJ; |
| |
| /** |
| * A JAXP DOM implementation that uses Gnome libxml2 as the underlying |
| * parser and node representation. |
| * |
| * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
| */ |
| public class GnomeDocumentBuilder |
| extends DocumentBuilder |
| implements DOMImplementation |
| { |
| |
| static |
| { |
| XMLJ.init(); |
| } |
| |
| // -- DocumentBuilder -- |
| |
| private boolean validate; |
| private boolean coalesce; |
| private boolean expandEntities; |
| private EntityResolver entityResolver; |
| private ErrorHandler errorHandler; |
| private boolean seenFatalError; |
| |
| /** |
| * Constructs a new validating document builder. |
| */ |
| public GnomeDocumentBuilder() |
| { |
| this(true, false, false); |
| } |
| |
| /** |
| * Constructs a new document builder. |
| * @param validate whether to validate during parsing |
| * @param coalesce whether to merge CDATA as text nodes |
| * @param expandEntities whether to expand entity references |
| */ |
| public GnomeDocumentBuilder(boolean validate, |
| boolean coalesce, |
| boolean expandEntities) |
| { |
| this.validate = validate; |
| this.coalesce = coalesce; |
| this.expandEntities = expandEntities; |
| } |
| |
| public DOMImplementation getDOMImplementation() |
| { |
| return this; |
| } |
| |
| public boolean isNamespaceAware() |
| { |
| return true; |
| } |
| |
| public boolean isValidating() |
| { |
| return validate; |
| } |
| |
| public Document newDocument() |
| { |
| return createDocument(null, null, null); |
| } |
| |
| public Document parse(InputSource input) |
| throws SAXException, IOException |
| { |
| NamedInputStream in = XMLJ.getInputStream(input); |
| byte[] detectBuffer = in.getDetectBuffer(); |
| String publicId = input.getPublicId(); |
| String systemId = input.getSystemId(); |
| String base = XMLJ.getBaseURI(systemId); |
| // Handle zero-length document |
| if (detectBuffer == null) |
| { |
| throw new SAXParseException("No document element", publicId, |
| systemId, 0, 0); |
| } |
| seenFatalError = false; |
| return parseStream(in, |
| detectBuffer, |
| publicId, |
| systemId, |
| base, |
| validate, |
| coalesce, |
| expandEntities, |
| true, //entityResolver != null, |
| errorHandler != null); |
| } |
| |
| private native Document parseStream(InputStream in, |
| byte[] detectBuffer, |
| String publicId, |
| String systemId, |
| String base, |
| boolean validate, |
| boolean coalesce, |
| boolean expandEntities, |
| boolean entityResolver, |
| boolean errorHandler); |
| |
| public void setEntityResolver(EntityResolver resolver) |
| { |
| entityResolver = resolver; |
| } |
| |
| public void setErrorHandler(ErrorHandler handler) |
| { |
| errorHandler = handler; |
| } |
| |
| // -- DOMImplementation -- |
| |
| public boolean hasFeature(String name, String version) |
| { |
| if (name.length() == 0) |
| { |
| return false; |
| } |
| name = name.toLowerCase(); |
| if (name.charAt(0) == '+') |
| { |
| name = name.substring(1); |
| } |
| |
| if ("xml".equals(name) || "core".equals(name)) |
| { |
| return (version == null || |
| "".equals(version) || |
| "1.0".equals(version) || |
| "2.0".equals(version) || |
| "3.0".equals(version)); |
| |
| } |
| else if ("ls".equals(name) || "ls-async".equals(name)) |
| { |
| // TODO |
| /* |
| return (version == null || |
| "".equals(version) || |
| "3.0".equals(version)); |
| */ |
| return false; |
| } |
| else if ("traversal".equals(name)) |
| { |
| return (version == null || |
| "".equals(version) || |
| "2.0".equals(version)); |
| } |
| else if ("xpath".equals(name)) |
| { |
| return (version == null || |
| "".equals(version) || |
| "3.0".equals(version)); |
| } |
| return false; |
| } |
| |
| // DOM Level 3 |
| |
| public Object getFeature(String feature, String version) |
| { |
| if (hasFeature(feature, version)) |
| { |
| return this; |
| } |
| return null; |
| } |
| |
| public native Document createDocument(String namespaceURI, |
| String qualifiedName, |
| DocumentType doctype); |
| |
| public DocumentType createDocumentType(String qualifiedName, |
| String publicId, |
| String systemId) |
| { |
| return new StandaloneDocumentType(qualifiedName, publicId, systemId); |
| } |
| |
| // Callback hooks from JNI |
| |
| private void setDocumentLocator(Object ctx, Object loc) |
| { |
| // ignore |
| } |
| |
| private InputStream resolveEntity(String publicId, String systemId, |
| String base) |
| throws SAXException, IOException |
| { |
| String url = XMLJ.getAbsoluteURI(base, systemId); |
| InputStream in = null; |
| if (entityResolver != null) |
| { |
| InputSource source = entityResolver.resolveEntity(publicId, url); |
| if (source != null) |
| { |
| in = XMLJ.getInputStream(source); |
| } |
| } |
| if (in == null) |
| { |
| in = XMLJ.getInputStream(new URL(url)); |
| } |
| return in; |
| } |
| |
| private void warning(String message, |
| int lineNumber, |
| int columnNumber, |
| String publicId, |
| String systemId) |
| throws SAXException |
| { |
| if (!seenFatalError && errorHandler != null) |
| { |
| Locator l = new StandaloneLocator(lineNumber, |
| columnNumber, |
| publicId, |
| systemId); |
| errorHandler.warning(new SAXParseException(message, l)); |
| } |
| } |
| |
| private void error(String message, |
| int lineNumber, |
| int columnNumber, |
| String publicId, |
| String systemId) |
| throws SAXException |
| { |
| if (!seenFatalError && errorHandler != null) |
| { |
| Locator l = new StandaloneLocator(lineNumber, |
| columnNumber, |
| publicId, |
| systemId); |
| errorHandler.error(new SAXParseException(message, l)); |
| } |
| } |
| |
| private void fatalError(String message, |
| int lineNumber, |
| int columnNumber, |
| String publicId, |
| String systemId) |
| throws SAXException |
| { |
| if (!seenFatalError && errorHandler != null) |
| { |
| seenFatalError = true; |
| Locator l = new StandaloneLocator(lineNumber, |
| columnNumber, |
| publicId, |
| systemId); |
| errorHandler.fatalError(new SAXParseException(message, l)); |
| } |
| } |
| |
| } |