2006-09-17 Chris Burdess <dog@gnu.org>

	Fixes PR 27610 27687.
	* gnu/xml/dom/ls/SAXEventSink.java: Permit limited subclassing.
	* gnu/xml/transform/SAXTemplatesHandler.java,
	* gnu/xml/transform/SAXTransformerHandler.java: New files.
	* gnu/xml/transform/TransformerFactoryImpl.java: Implement
	  SAXTransformerFactory.

4 files changed, 265 insertions, 3 deletions

diff --git a/gnu/xml/dom/ls/SAXEventSink.java b/gnu/xml/dom/ls/SAXEventSink.java
index aad5ac76e..8c5b104b9 100644
--- a/gnu/xml/dom/ls/SAXEventSink.java
+++ b/gnu/xml/dom/ls/SAXEventSink.java
@@ -43,6 +43,7 @@ import java.util.LinkedList;
 import java.util.List;
 import javax.xml.XMLConstants;
 import org.w3c.dom.Attr;
+import org.w3c.dom.Document;
 import org.w3c.dom.DocumentType;
 import org.w3c.dom.Element;
 import org.w3c.dom.Entity;
@@ -72,7 +73,7 @@ import gnu.xml.dom.DomNode;
  *
  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
  */
-class SAXEventSink
+public class SAXEventSink
   implements ContentHandler, LexicalHandler, DTDHandler, DeclHandler
 {
 
@@ -110,6 +111,11 @@ class SAXEventSink
     interrupted = true;
   }
 
+  protected Document getDocument()
+  {
+    return doc;
+  }
+
   // -- ContentHandler2 --
   
   public void setDocumentLocator(Locator locator)
diff --git a/gnu/xml/transform/SAXTemplatesHandler.java b/gnu/xml/transform/SAXTemplatesHandler.java
new file mode 100644
index 000000000..2c5a4686f
--- /dev/null
+++ b/gnu/xml/transform/SAXTemplatesHandler.java
@@ -0,0 +1,97 @@
+/* SAXTemplatesHandler.java -- 
+   Copyright (C) 2006 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.transform;
+
+import javax.xml.transform.Templates;
+import javax.xml.transform.TransformerConfigurationException;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.sax.TemplatesHandler;
+import org.w3c.dom.Document;
+import gnu.xml.dom.ls.SAXEventSink;
+
+/**
+ * A content handler that acts as a sink for SAX parse events,
+ * constructing an XSL stylesheet.
+ * Internally, this class simply creates a DOM tree from the events,
+ * and then parses the DOM into a Templates object.
+ *
+ * @author Chris Burdess (dog@gnu.org)
+ */
+class SAXTemplatesHandler
+  extends SAXEventSink
+  implements TemplatesHandler
+{
+
+  final TransformerFactoryImpl factory;
+  String systemId;
+
+  SAXTemplatesHandler(TransformerFactoryImpl factory)
+  {
+    this.factory = factory;
+  }
+
+  public String getSystemId()
+  {
+    return systemId;
+  }
+
+  public void setSystemId(String systemId)
+  {
+    this.systemId = systemId;
+  }
+
+  public Templates getTemplates()
+  {
+    Document doc = getDocument();
+    if (doc == null)
+      throw new IllegalStateException("Parsing of stylesheet incomplete");
+    DOMSource ds = new DOMSource(doc, systemId);
+    try
+      {
+        return factory.newTemplates(ds);
+      }
+    catch (TransformerConfigurationException e)
+      {
+        String msg = "Unable to construct templates from this event stream";
+        IllegalStateException e2 = new IllegalStateException(msg);
+        e2.initCause(e);
+        throw e2;
+      }
+  }
+
+}
diff --git a/gnu/xml/transform/SAXTransformerHandler.java b/gnu/xml/transform/SAXTransformerHandler.java
new file mode 100644
index 000000000..83cc3754b
--- /dev/null
+++ b/gnu/xml/transform/SAXTransformerHandler.java
@@ -0,0 +1,111 @@
+/* SAXTransformerHandler.java -- 
+   Copyright (C) 2006 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.transform;
+
+import javax.xml.transform.Result;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerException;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.sax.TransformerHandler;
+import org.w3c.dom.Document;
+import org.xml.sax.SAXException;
+import gnu.xml.dom.ls.SAXEventSink;
+
+/**
+ * A SAX event sink that processes an XML source represented as a stream of
+ * SAX events into a result tree.
+ * This works by simply buffering all the events into a DOM tree and then
+ * using this DOM tree as the source of the transformation.
+ *
+ * @author Chris Burdess (dog@gnu.org)
+ */
+class SAXTransformerHandler
+  extends SAXEventSink
+  implements TransformerHandler
+{
+
+  final TransformerFactoryImpl factory;
+  final Transformer transformer;
+  String systemId;
+  Result result;
+
+  SAXTransformerHandler(TransformerFactoryImpl factory, Transformer transformer)
+  {
+    this.factory = factory;
+    this.transformer = transformer;
+  }
+
+  public String getSystemId()
+  {
+    return systemId;
+  }
+
+  public void setSystemId(String systemId)
+  {
+    this.systemId = systemId;
+  }
+
+  public Transformer getTransformer()
+  {
+    return transformer;
+  }
+
+  public void setResult(Result result)
+  {
+    this.result = result;
+  }
+
+  public void endDocument()
+    throws SAXException
+  {
+    super.endDocument();
+    try
+      {
+        Document doc = getDocument();
+        DOMSource ds = new DOMSource(doc, systemId);
+        transformer.transform(ds, result);
+      }
+    catch (TransformerException e)
+      {
+        SAXException e2 = new SAXException(e.getMessage());
+        e2.initCause(e);
+        throw e2;
+      }
+  }
+  
+}
diff --git a/gnu/xml/transform/TransformerFactoryImpl.java b/gnu/xml/transform/TransformerFactoryImpl.java
index 16e3363f8..1e8fea3e3 100644
--- a/gnu/xml/transform/TransformerFactoryImpl.java
+++ b/gnu/xml/transform/TransformerFactoryImpl.java
@@ -60,11 +60,15 @@ import javax.xml.transform.dom.DOMResult;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.sax.SAXResult;
 import javax.xml.transform.sax.SAXSource;
+import javax.xml.transform.sax.SAXTransformerFactory;
+import javax.xml.transform.sax.TemplatesHandler;
+import javax.xml.transform.sax.TransformerHandler;
 import javax.xml.transform.stream.StreamResult;
 import javax.xml.transform.stream.StreamSource;
 import javax.xml.xpath.XPathFactory;
 import org.w3c.dom.Document;
 import org.w3c.dom.Node;
+import org.xml.sax.XMLFilter;
 import gnu.xml.dom.DomDocument;
 
 /**
@@ -73,7 +77,7 @@ import gnu.xml.dom.DomDocument;
  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
  */
 public class TransformerFactoryImpl
-  extends TransformerFactory
+  extends SAXTransformerFactory
 {
 
   final XPathFactory xpathFactory;
@@ -316,7 +320,8 @@ public class TransformerFactoryImpl
         StreamSource.FEATURE.equals(name) ||
         StreamResult.FEATURE.equals(name) ||
         DOMSource.FEATURE.equals(name) ||
-        DOMResult.FEATURE.equals(name))
+        DOMResult.FEATURE.equals(name) ||
+        SAXTransformerFactory.FEATURE.equals(name))
       {
         return true;
       }
@@ -346,6 +351,49 @@ public class TransformerFactoryImpl
     return userListener;
   }
 
+  // -- SAXTransformerFactory --
+
+  public TemplatesHandler newTemplatesHandler()
+    throws TransformerConfigurationException
+  {
+    return new SAXTemplatesHandler(this);
+  }
+
+  public TransformerHandler newTransformerHandler()
+    throws TransformerConfigurationException
+  {
+    Transformer transformer = newTransformer();
+    return new SAXTransformerHandler(this, transformer);
+  }
+  
+  public TransformerHandler newTransformerHandler(Source source)
+    throws TransformerConfigurationException
+  {
+    Transformer transformer = newTransformer(source);
+    return new SAXTransformerHandler(this, transformer);
+  }
+  
+  public TransformerHandler newTransformerHandler(Templates templates)
+    throws TransformerConfigurationException
+  {
+    Transformer transformer = templates.newTransformer();
+    return new SAXTransformerHandler(this, transformer);
+  }
+
+  public XMLFilter newXMLFilter(Source source)
+    throws TransformerConfigurationException
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public XMLFilter newXMLFilter(Templates templates)
+    throws TransformerConfigurationException
+  {
+    throw new UnsupportedOperationException();
+  }
+  
+  // -- SAXTransformerFactory end --
+
   /**
    * Syntax: TransformerFactoryImpl [<stylesheet> [<input> [<output>]]]
    */