Special SAXSVGDocumentFactory with the ability to set an arbitrary EntityResolver...

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@196177 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/src/java/org/apache/fop/svg/FOPSAXSVGDocumentFactory.java b/src/java/org/apache/fop/svg/FOPSAXSVGDocumentFactory.java
new file mode 100644 (file)
index 0000000..d9afab0
--- /dev/null
+++ b/src/java/org/apache/fop/svg/FOPSAXSVGDocumentFactory.java
@@ -0,0 +1,105 @@
+/*
+ * $Id$
+ * ============================================================================
+ *                    The Apache Software License, Version 1.1
+ * ============================================================================
+ * 
+ * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 
+ * 3. The end-user documentation included with the redistribution, if any, must
+ *    include the following acknowledgment: "This product includes software
+ *    developed by the Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowledgment may appear in the software itself, if
+ *    and wherever such third-party acknowledgments normally appear.
+ * 
+ * 4. The names "FOP" and "Apache Software Foundation" must not be used to
+ *    endorse or promote products derived from this software without prior
+ *    written permission. For written permission, please contact
+ *    apache@apache.org.
+ * 
+ * 5. Products derived from this software may not be called "Apache", nor may
+ *    "Apache" appear in their name, without prior written permission of the
+ *    Apache Software Foundation.
+ * 
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
+ * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ============================================================================
+ * 
+ * This software consists of voluntary contributions made by many individuals
+ * on behalf of the Apache Software Foundation and was originally created by
+ * James Tauber <jtauber@jtauber.com>. For more information on the Apache
+ * Software Foundation, please see <http://www.apache.org/>.
+ */ 
+package org.apache.fop.svg;
+
+import java.io.IOException;
+
+import org.xml.sax.EntityResolver;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+import org.apache.batik.dom.svg.SAXSVGDocumentFactory;
+
+/**
+ * This is a special subclass to allow setting a special EntityResolver.
+ */
+public class FOPSAXSVGDocumentFactory extends SAXSVGDocumentFactory {
+
+    private EntityResolver additionalResolver;
+
+    /**
+     * Creates a new DocumentFactory object.
+     * @param parser The SAX2 parser classname.
+     */
+    public FOPSAXSVGDocumentFactory(String parser) {
+        super(parser);
+    }
+    
+    /**
+     * Sets an additional entity resolver. It will be used before the default
+     * entity resolving.
+     * @param resolver Additional resolver
+     */
+    public void setAdditionalEntityResolver(EntityResolver resolver) {
+        this.additionalResolver = resolver;
+    }
+    
+    /**
+     * @see org.xml.sax.EntityResolver#resolveEntity(String, String)
+     */
+    public InputSource resolveEntity(String publicId, String systemId)
+                throws SAXException {
+        if (this.additionalResolver != null) {
+            try {
+                InputSource result = this.additionalResolver.resolveEntity(publicId, systemId);
+                if (result != null) {
+                    return result;
+                }
+            } catch (IOException ioe) {
+                /**@todo Batik's SAXSVGDocumentFactory should throw IOException,
+                 * so we don't have to handle it here. */
+                throw new SAXException(ioe);
+            }
+        }
+        return super.resolveEntity(publicId, systemId);
+    }
+
+}