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Diffstat (limited to 'libjava/gnu/xml/util/SAXNullTransformerFactory.java')
| -rw-r--r-- | libjava/gnu/xml/util/SAXNullTransformerFactory.java | 676 |
1 files changed, 0 insertions, 676 deletions
diff --git a/libjava/gnu/xml/util/SAXNullTransformerFactory.java b/libjava/gnu/xml/util/SAXNullTransformerFactory.java deleted file mode 100644 index 81ad8231270..00000000000 --- a/libjava/gnu/xml/util/SAXNullTransformerFactory.java +++ /dev/null @@ -1,676 +0,0 @@ -/* SAXNullTransformerFactory.java -- - Copyright (C) 2001 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.util; - -import java.io.FileOutputStream; -import java.io.IOException; -import java.io.OutputStream; -import java.net.URL; -import java.net.URLConnection; -import java.util.Hashtable; -import java.util.Properties; - -import gnu.xml.dom.Consumer; -import gnu.xml.dom.DomDocument; -import gnu.xml.pipeline.DomConsumer; -import gnu.xml.pipeline.EventFilter; - -import javax.xml.transform.*; -import javax.xml.transform.dom.*; -import javax.xml.transform.sax.*; -import javax.xml.transform.stream.*; - -import org.xml.sax.*; -import org.xml.sax.helpers.XMLReaderFactory; -import org.xml.sax.helpers.LocatorImpl; - - -/** - * Implements null transforms. XSLT stylesheets are not supported. - * This class provides a way to translate three representations of - * XML data (SAX event stream, DOM tree, and XML text) into each other. - * In essence it's a thinnish wrapper around basic SAX event - * <a href="../pipeline/package-summary.html">pipeline</a> facilities, which - * exposes only limited functionality. The <em>javax.xml.transform</em> - * functionality is implemented as follows: <ul> - * - * <li>The {@link javax.xml.transform.sax.SAXSource SAXSource} class - * just wraps an {@link XMLReader} and {@link InputSource}, while the - * {@link javax.xml.transform.sax.SAXResult SAXResult} class is less - * functional than a {@link gnu.xml.pipeline.EventConsumer EventConsumer}. - * (Notably, it drops all but one declaration from any DTD.)</li> - * - * <li>The {@link javax.xml.transform.dom.DOMSource DOMSource} class - * corresponds to special SAX parsers like {@link DomParser}, and the - * {@link javax.xml.transform.dom.DOMResult DOMResult} class corresponds - * to a {@link gnu.xml.pipeline.DomConsumer DomConsumer}.</li> - * - * <li>The {@link javax.xml.transform.stream.StreamSource StreamSource} - * class corresponds to a SAX {@link InputSource}, and the - * {@link javax.xml.transform.stream.StreamResult StreamResult} class - * corresponds to a {@link gnu.xml.pipeline.TextConsumer TextConsumer}.</li> - * - * </ul> - * - * <p><em>This implementation is preliminary.</em> - * - * @see gnu.xml.pipeline.XsltFilter - * - * @author David Brownell - */ -public class SAXNullTransformerFactory extends SAXTransformerFactory -{ - - private ErrorListener errListener; - private URIResolver uriResolver; - - /** Default constructor */ - public SAXNullTransformerFactory () { } - - // - // only has stuff that makes sense with null transforms - // - - /** - * Returns true if the requested feature is supported. - * All three kinds of input and output are accepted: - * XML text, SAX events, and DOM nodes. - */ - public boolean getFeature (String feature) - { - return SAXTransformerFactory.FEATURE.equals (feature) - || SAXResult.FEATURE.equals (feature) - || SAXSource.FEATURE.equals (feature) - || DOMResult.FEATURE.equals (feature) - || DOMSource.FEATURE.equals (feature) - || StreamResult.FEATURE.equals (feature) - || StreamSource.FEATURE.equals (feature) - ; - } - - public void setFeature(String name, boolean value) - throws TransformerConfigurationException - { - throw new TransformerConfigurationException(name); - } - - - /** Throws an exception (no implementation attributes are supported) */ - public void setAttribute (String key, Object value) - { - throw new IllegalArgumentException (); - } - - /** Throws an exception (no implementation attributes are supported) */ - public Object getAttribute (String key) - { - throw new IllegalArgumentException (); - } - - /** (not yet implemented) */ - public Source getAssociatedStylesheet (Source source, - String media, - String title, - String charset) - throws TransformerConfigurationException - { - // parse, and find the appropriate xsl-stylesheet PI contents - throw new IllegalArgumentException (); - } - - public Transformer newTransformer () - throws TransformerConfigurationException - { - return new NullTransformer (); - } - - /** - * Returns a TransformerHandler that knows how to generate output - * in all three standard formats. Output text is generated using - * {@link XMLWriter}, and the GNU implementation of - * {@link DomDocument DOM} is used. - * - * @see SAXResult - * @see StreamResult - * @see DOMResult - */ - public TransformerHandler newTransformerHandler () - throws TransformerConfigurationException - { - NullTransformer transformer = new NullTransformer (); - return transformer.handler; - } - - // - // Stuff that depends on XSLT support, which we don't provide - // - private static final String noXSLT = "No XSLT support"; - - /** Throws an exception (XSLT is not supported). */ - public Transformer newTransformer (Source stylesheet) - throws TransformerConfigurationException - { - throw new TransformerConfigurationException (noXSLT); - } - - /** Throws an exception (XSLT is not supported). */ - public Templates newTemplates (Source stylesheet) - throws TransformerConfigurationException - { - throw new TransformerConfigurationException (noXSLT); - } - - /** Throws an exception (XSLT is not supported). */ - public TemplatesHandler newTemplatesHandler () - throws TransformerConfigurationException - { - throw new TransformerConfigurationException (noXSLT); - } - - /** Throws an exception (XSLT is not supported). */ - public TransformerHandler newTransformerHandler (Source stylesheet) - throws TransformerConfigurationException - { - throw new TransformerConfigurationException (noXSLT); - } - - /** Throws an exception (XSLT is not supported). */ - public TransformerHandler newTransformerHandler (Templates stylesheet) - throws TransformerConfigurationException - { - throw new TransformerConfigurationException (noXSLT); - } - - /** Throws an exception (XSLT is not supported). */ - public XMLFilter newXMLFilter (Source stylesheet) - throws TransformerConfigurationException - { - throw new TransformerConfigurationException (noXSLT); - } - - /** Throws an exception (XSLT is not supported). */ - public XMLFilter newXMLFilter (Templates stylesheet) - throws TransformerConfigurationException - { - throw new TransformerConfigurationException (noXSLT); - } - - /** Returns the value assigned by {@link #setErrorListener}. */ - public ErrorListener getErrorListener () - { - return errListener; - } - - /** Assigns a value that would be used when parsing stylesheets */ - public void setErrorListener (ErrorListener e) - { - errListener = e; - } - - /** Returns the value assigned by {@link #setURIResolver}. */ - public URIResolver getURIResolver () - { - return uriResolver; - } - - /** Assigns a value that would be used when parsing stylesheets */ - public void setURIResolver (URIResolver u) - { - uriResolver = u; - } - - - // - // Helper classes. These might in theory be subclassed - // by an XSLT implementation, if they were exported. - // - - static class DomTerminus - extends DomConsumer - { - - DomTerminus (DOMResult result) - throws SAXException - { - // won't really throw SAXException - super (DomDocument.class); - setHandler (new DomHandler (this, result)); - } - - } - - static class DomHandler - extends Consumer.Backdoor - { - - private DOMResult result; - - DomHandler (DomConsumer c, DOMResult r) - throws SAXException - { - // won't really throw SAXException - super (c); - result = r; - } - - public void endDocument () - throws SAXException - { - super.endDocument (); - result.setNode (getDocument ()); - } - - } - - private static OutputStream getOutputStream (String uri) - throws IOException - { - // JDK stupidity: file "protocol does not support output" ... - if (uri.startsWith ("file:")) - return new FileOutputStream (uri.substring (5)); - - // Otherwise ... - URL url = new URL (uri); - URLConnection conn = url.openConnection (); - - conn.setDoOutput (true); - return conn.getOutputStream (); - } - - - static class NullHandler - extends EventFilter - implements TransformerHandler - { - - private String systemId; - private Transformer transformer; - - NullHandler (Transformer t) - { - transformer = t; - } - - public Transformer getTransformer () - { - return transformer; - } - - public String getSystemId () - { - return systemId; - } - - public void setSystemId (String id) - { - systemId = id; - } - - public void setResult (Result result) - { - if (result.getSystemId () != null) - systemId = result.getSystemId (); - - try - { - - // output to partial SAX event stream? - if (result instanceof SAXResult) - { - SAXResult r = (SAXResult) result; - - setContentHandler (r.getHandler ()); - setProperty (LEXICAL_HANDLER, r.getLexicalHandler ()); - // DTD info is filtered out by javax.transform - - // output to DOM tree? - } - else if (result instanceof DOMResult) - { - DomTerminus out = new DomTerminus ((DOMResult) result); - - setContentHandler (out.getContentHandler ()); - setProperty (LEXICAL_HANDLER, - out.getProperty (LEXICAL_HANDLER)); - // save DTD-derived info, if any. - setDTDHandler (out.getDTDHandler ()); - setProperty (DECL_HANDLER, - out.getProperty (DECL_HANDLER)); - - // node is saved into result on endDocument() - - // output to (XML) text? - } - else if (result instanceof StreamResult) - { - StreamResult r = (StreamResult) result; - XMLWriter out; - - // FIXME: when do output properties take effect? - // encoding, standalone decl, xml/xhtml/... ... - - // FIXME: maybe put nsfix filter up front - - try - { - if (r.getWriter () != null) - out = new XMLWriter (r.getWriter ()); - else if (r.getOutputStream () != null) - out = new XMLWriter (r.getOutputStream ()); - else if (r.getSystemId () != null) - out = new XMLWriter ( - getOutputStream (r.getSystemId ())); - else - throw new IllegalArgumentException ( - "bad StreamResult"); - } - catch (IOException e) - { - e.printStackTrace (); - // on jdk 1.4, pass the root cause ... - throw new IllegalArgumentException (e.getMessage ()); - } - - // out.setExpandingEntities (true); - // out.setPrettyPrinting (true); - // out.setXhtml (true); - - setContentHandler (out); - setProperty (LEXICAL_HANDLER, out); - // save DTD info, if any; why not? - setDTDHandler (out); - setProperty (DECL_HANDLER, out); - } - - } - catch (SAXException e) - { - // SAXNotSupportedException or SAXNotRecognizedException: - // "can't happen" ... but SAXException for DOM build probs - // could happen, so ... - // on jdk 1.4, pass the root cause ... - throw new IllegalArgumentException (e.getMessage ()); - } - } - } - - // an interface that adds no value - static class LocatorAdapter - extends LocatorImpl - implements SourceLocator - { - - LocatorAdapter (SAXParseException e) - { - setSystemId (e.getSystemId ()); - setPublicId (e.getPublicId ()); - setLineNumber (e.getLineNumber ()); - setColumnNumber (e.getColumnNumber ()); - } - - } - - // another interface that adds no value - static class ListenerAdapter - implements ErrorHandler - { - - NullTransformer transformer; - - ListenerAdapter (NullTransformer t) - { - transformer = t; - } - - private TransformerException map (SAXParseException e) - { - return new TransformerException ( - e.getMessage (), - new LocatorAdapter (e), - e); - } - - public void error (SAXParseException e) - throws SAXParseException - { - try - { - if (transformer.errListener != null) - transformer.errListener.error (map (e)); - } - catch (TransformerException ex) - { - transformer.ex = ex; - throw e; - } - } - - public void fatalError (SAXParseException e) - throws SAXParseException - { - try - { - if (transformer.errListener != null) - transformer.errListener.fatalError (map (e)); - else - throw map (e); - } catch (TransformerException ex) { - transformer.ex = ex; - throw e; - } - } - - public void warning (SAXParseException e) - throws SAXParseException - { - try - { - if (transformer.errListener != null) - transformer.errListener.warning (map (e)); - } - catch (TransformerException ex) - { - transformer.ex = ex; - throw e; - } - } - } - - static class NullTransformer - extends Transformer - { - - private URIResolver uriResolver; - private Properties props = new Properties (); - private Hashtable params = new Hashtable (7); - - ErrorListener errListener = null; - TransformerException ex = null; - NullHandler handler; - - NullTransformer () - { - super (); - handler = new NullHandler (this); - } - - public ErrorListener getErrorListener () - { - return errListener; - } - - public void setErrorListener (ErrorListener e) - { - errListener = e; - } - - public URIResolver getURIResolver () - { - return uriResolver; - } - - public void setURIResolver (URIResolver u) - { - uriResolver = u; - } - - public void setOutputProperties (Properties p) - { - props = (Properties) p.clone (); - } - - public Properties getOutputProperties () - { - return (Properties) props.clone (); - } - - public void setOutputProperty (String name, String value) - { - props.setProperty (name, value); - } - - public String getOutputProperty (String name) - { - return props.getProperty (name); - } - - public void clearParameters () - { - params.clear (); - } - - public void setParameter (String name, Object value) - { - props.put (name, value); - } - - public Object getParameter (String name) - { - return props.get (name); - } - - public void transform (Source in, Result out) - throws TransformerException - { - try - { - XMLReader producer; - InputSource input; - - // Input from DOM? - if (in instanceof DOMSource) - { - DOMSource source = (DOMSource) in; - - if (source.getNode () == null) - throw new IllegalArgumentException ("no DOM node"); - producer = new DomParser (source.getNode ()); - input = null; - - // Input from SAX? - } - else if (in instanceof SAXSource) - { - SAXSource source = (SAXSource) in; - - producer = source.getXMLReader (); - if (producer == null) - producer = XMLReaderFactory.createXMLReader (); - - input = source.getInputSource (); - if (input == null) - { - if (source.getSystemId () != null) - input = new InputSource (source.getSystemId ()); - else - throw new IllegalArgumentException ( - "missing SAX input"); - } - - // Input from a stream or something? - } - else - { - producer = XMLReaderFactory.createXMLReader (); - input = SAXSource.sourceToInputSource (in); - if (input == null) - throw new IllegalArgumentException ("missing input"); - } - - // preserve original namespace prefixes - try - { - producer.setFeature(EventFilter.FEATURE_URI + - "namespace-prefixes", - true); - } - catch (Exception e) - { - /* ignore */ - // FIXME if we couldn't, "NsFix" stage before the output .. - } - - // arrange the output - handler.setResult (out); - EventFilter.bind (producer, handler); - - // then parse ... single element pipeline - producer.parse (input); - - } - catch (IOException e) - { - throw new TransformerException ("transform failed", e); - - } - catch (SAXException e) - { - if (ex == null && ex.getCause () == e) - throw ex; - else - throw new TransformerException ("transform failed", e); - - } - finally - { - ex = null; - } - } - } - -} |