From 4e52940ae5277a22278c285a2978bc86a0b4133f Mon Sep 17 00:00:00 2001
From: Finn Bock <bckfnn@apache.org>
Date: Mon, 25 Oct 2004 14:57:14 +0000
Subject: [PATCH] Register an Errorlistener to get messages placed in the log
 system.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@198101 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/fop/apps/InputHandler.java     | 32 ++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/src/java/org/apache/fop/apps/InputHandler.java b/src/java/org/apache/fop/apps/InputHandler.java
index 7af24101d..ec4daa5e7 100644
--- a/src/java/org/apache/fop/apps/InputHandler.java
+++ b/src/java/org/apache/fop/apps/InputHandler.java
@@ -23,22 +23,29 @@ import java.io.File;
 import java.util.Vector;
 
 // Imported TraX classes
+import javax.xml.transform.ErrorListener;
 import javax.xml.transform.Result;
 import javax.xml.transform.Source;
 import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerException;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.sax.SAXResult;
 import javax.xml.transform.stream.StreamSource;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 /**
  * Class for handling files input from command line
  * either with XML and XSLT files (and optionally xsl
  * parameters) or FO File input alone
  */
-public class InputHandler {
+public class InputHandler implements ErrorListener {
     private File sourcefile = null;  // either FO or XML/XSLT usage
     private File stylesheet = null;  // for XML/XSLT usage
     private Vector xsltParams = null; // for XML/XSLT usage
+
+    protected Log log = LogFactory.getLog(InputHandler.class);
     
     /**
      * Constructor for XML->XSLT->FO input
@@ -101,6 +108,7 @@ public class InputHandler {
                     }
                 }
             }
+            transformer.setErrorListener(this);
 
             // Create a SAXSource from the input Source file
             Source src = new StreamSource(sourcefile);
@@ -115,4 +123,26 @@ public class InputHandler {
             throw new FOPException(e);
         }
     }
+    
+    /**
+     * Implementation of the ErrorListener interface.
+     */
+    public void warning(TransformerException exc) {
+        log.warn(exc.toString());
+    }
+
+    /**
+     * Implementation of the ErrorListener interface.
+     */
+    public void error(TransformerException exc) {
+        log.error(exc.toString());
+    }
+
+    /**
+     * Implementation of the ErrorListener interface.
+     */
+    public void fatalError(TransformerException exc)
+            throws TransformerException {
+        throw exc;
+    }
 }
-- 
2.39.5