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[pf3gnuchains/gcc-fork.git] / libjava / classpath / gnu / xml / transform / URIResolverEntityResolver.java

diff --git a/libjava/classpath/gnu/xml/transform/URIResolverEntityResolver.java b/libjava/classpath/gnu/xml/transform/URIResolverEntityResolver.java
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+/* URIResolverEntityResolver.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.transform;
+
+import java.io.IOException;
+import javax.xml.transform.Source;
+import javax.xml.transform.TransformerException;
+import javax.xml.transform.URIResolver;
+import javax.xml.transform.sax.SAXSource;
+import org.xml.sax.EntityResolver;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+/**
+ * EntityResolver that wraps a URIResolver.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ */
+class URIResolverEntityResolver
+  implements EntityResolver
+{
+
+  final URIResolver resolver;
+
+  URIResolverEntityResolver(URIResolver resolver)
+  {
+    this.resolver = resolver;
+  }
+
+  public InputSource resolveEntity(String publicId, String systemId)
+    throws SAXException, IOException
+  {
+    try
+      {
+        Source source = resolver.resolve(null, systemId);
+        if (source == null)
+          {
+            return null;
+          }
+        return SAXSource.sourceToInputSource(source);
+      }
+    catch (TransformerException e)
+      {
+        throw new SAXException(e);
+      }
+  }
+  
+}