android-platform-libcore/luni/src/main/java/org/apache/xml/utils/DefaultErrorHandler.java - nest-cam/4320010/android-platform-libcore - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements. See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership. The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the  "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 /*
  * $Id: DefaultErrorHandler.java 524806 2007-04-02 15:51:39Z zongaro $
  */
 package org.apache.xml.utils;

 import java.io.PrintStream;
 import java.io.PrintWriter;

 import javax.xml.transform.ErrorListener;
 import javax.xml.transform.SourceLocator;
 import javax.xml.transform.TransformerException;

 import org.apache.xml.res.XMLErrorResources;
 import org.apache.xml.res.XMLMessages;

 import org.xml.sax.ErrorHandler;
 import org.xml.sax.SAXException;
 import org.xml.sax.SAXParseException;


 /**
  * Implement SAX error handler for default reporting.
  * @xsl.usage general
  */
 public class DefaultErrorHandler implements ErrorHandler, ErrorListener
 {
   PrintWriter m_pw;

   /**
    * if this flag is set to true, we will rethrow the exception on
    * the error() and fatalError() methods. If it is false, the errors
    * are reported to System.err.
    */
   boolean m_throwExceptionOnError = true;

   /**
    * Constructor DefaultErrorHandler
    */
   public DefaultErrorHandler(PrintWriter pw)
   {
     m_pw = pw;
   }

   /**
    * Constructor DefaultErrorHandler
    */
   public DefaultErrorHandler(PrintStream pw)
   {
     m_pw = new PrintWriter(pw, true);
   }

   /**
    * Constructor DefaultErrorHandler
    */
   public DefaultErrorHandler()
   {
     this(true);
   }

   /**
    * Constructor DefaultErrorHandler
    */
   public DefaultErrorHandler(boolean throwExceptionOnError)
   {
     // Defer creation of a PrintWriter until it's actually needed
     m_throwExceptionOnError = throwExceptionOnError;
   }

   /**
    * Retrieve <code>java.io.PrintWriter</code> to which errors are being
    * directed.
    * @return The <code>PrintWriter</code> installed via the constructor
    *         or the default <code>PrintWriter</code>
    */
   public PrintWriter getErrorWriter() {
     // Defer creating the java.io.PrintWriter until an error needs to be
     // reported.
     if (m_pw == null) {
       m_pw = new PrintWriter(System.err, true);
     }
     return m_pw;
   }

   /**
    * Receive notification of a warning.
    *
    * <p>SAX parsers will use this method to report conditions that
    * are not errors or fatal errors as defined by the XML 1.0
    * recommendation.  The default behaviour is to take no action.</p>
    *
    * <p>The SAX parser must continue to provide normal parsing events
    * after invoking this method: it should still be possible for the
    * application to process the document through to the end.</p>
    *
    * @param exception The warning information encapsulated in a
    *                  SAX parse exception.
    * @throws SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
   public void warning(SAXParseException exception) throws SAXException
   {
     PrintWriter pw = getErrorWriter();

     printLocation(pw, exception);
     pw.println("Parser warning: " + exception.getMessage());
   }

   /**
    * Receive notification of a recoverable error.
    *
    * <p>This corresponds to the definition of "error" in section 1.2
    * of the W3C XML 1.0 Recommendation.  For example, a validating
    * parser would use this callback to report the violation of a
    * validity constraint.  The default behaviour is to take no
    * action.</p>
    *
    * <p>The SAX parser must continue to provide normal parsing events
    * after invoking this method: it should still be possible for the
    * application to process the document through to the end.  If the
    * application cannot do so, then the parser should report a fatal
    * error even if the XML 1.0 recommendation does not require it to
    * do so.</p>
    *
    * @param exception The error information encapsulated in a
    *                  SAX parse exception.
    * @throws SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
   public void error(SAXParseException exception) throws SAXException
   {
     //printLocation(exception);
     // getErrorWriter().println(exception.getMessage());

     throw exception;
   }

   /**
    * Receive notification of a non-recoverable error.
    *
    * <p>This corresponds to the definition of "fatal error" in
    * section 1.2 of the W3C XML 1.0 Recommendation.  For example, a
    * parser would use this callback to report the violation of a
    * well-formedness constraint.</p>
    *
    * <p>The application must assume that the document is unusable
    * after the parser has invoked this method, and should continue
    * (if at all) only for the sake of collecting addition error
    * messages: in fact, SAX parsers are free to stop reporting any
    * other events once this method has been invoked.</p>
    *
    * @param exception The error information encapsulated in a
    *                  SAX parse exception.
    * @throws SAXException Any SAX exception, possibly
    *            wrapping another exception.
    */
   public void fatalError(SAXParseException exception) throws SAXException
   {
     // printLocation(exception);
     // getErrorWriter().println(exception.getMessage());

     throw exception;
   }

   /**
    * Receive notification of a warning.
    *
    * <p>SAX parsers will use this method to report conditions that
    * are not errors or fatal errors as defined by the XML 1.0
    * recommendation.  The default behaviour is to take no action.</p>
    *
    * <p>The SAX parser must continue to provide normal parsing events
    * after invoking this method: it should still be possible for the
    * application to process the document through to the end.</p>
    *
    * @param exception The warning information encapsulated in a
    *                  SAX parse exception.
    * @throws javax.xml.transform.TransformerException Any SAX exception, possibly
    *            wrapping another exception.
    * @see javax.xml.transform.TransformerException
    */
   public void warning(TransformerException exception) throws TransformerException
   {
     PrintWriter pw = getErrorWriter();

     printLocation(pw, exception);
     pw.println(exception.getMessage());
   }

   /**
    * Receive notification of a recoverable error.
    *
    * <p>This corresponds to the definition of "error" in section 1.2
    * of the W3C XML 1.0 Recommendation.  For example, a validating
    * parser would use this callback to report the violation of a
    * validity constraint.  The default behaviour is to take no
    * action.</p>
    *
    * <p>The SAX parser must continue to provide normal parsing events
    * after invoking this method: it should still be possible for the
    * application to process the document through to the end.  If the
    * application cannot do so, then the parser should report a fatal
    * error even if the XML 1.0 recommendation does not require it to
    * do so.</p>
    *
    * @param exception The error information encapsulated in a
    *                  SAX parse exception.
    * @throws javax.xml.transform.TransformerException Any SAX exception, possibly
    *            wrapping another exception.
    * @see javax.xml.transform.TransformerException
    */
   public void error(TransformerException exception) throws TransformerException
   {
     // If the m_throwExceptionOnError flag is true, rethrow the exception.
     // Otherwise report the error to System.err.
     if (m_throwExceptionOnError)
       throw exception;
     else
     {
       PrintWriter pw = getErrorWriter();

       printLocation(pw, exception);
       pw.println(exception.getMessage());
     }
   }

   /**
    * Receive notification of a non-recoverable error.
    *
    * <p>This corresponds to the definition of "fatal error" in
    * section 1.2 of the W3C XML 1.0 Recommendation.  For example, a
    * parser would use this callback to report the violation of a
    * well-formedness constraint.</p>
    *
    * <p>The application must assume that the document is unusable
    * after the parser has invoked this method, and should continue
    * (if at all) only for the sake of collecting addition error
    * messages: in fact, SAX parsers are free to stop reporting any
    * other events once this method has been invoked.</p>
    *
    * @param exception The error information encapsulated in a
    *                  SAX parse exception.
    * @throws javax.xml.transform.TransformerException Any SAX exception, possibly
    *            wrapping another exception.
    * @see javax.xml.transform.TransformerException
    */
   public void fatalError(TransformerException exception) throws TransformerException
   {
     // If the m_throwExceptionOnError flag is true, rethrow the exception.
     // Otherwise report the error to System.err.
     if (m_throwExceptionOnError)
       throw exception;
     else
     {
       PrintWriter pw = getErrorWriter();

       printLocation(pw, exception);
       pw.println(exception.getMessage());
     }
   }

   public static void ensureLocationSet(TransformerException exception)
   {
     // SourceLocator locator = exception.getLocator();
     SourceLocator locator = null;
     Throwable cause = exception;

     // Try to find the locator closest to the cause.
     do
     {
       if(cause instanceof SAXParseException)
       {
         locator = new SAXSourceLocator((SAXParseException)cause);
       }
       else if (cause instanceof TransformerException)
       {
         SourceLocator causeLocator = ((TransformerException)cause).getLocator();
         if(null != causeLocator)
           locator = causeLocator;
       }

       if(cause instanceof TransformerException)
         cause = ((TransformerException)cause).getCause();
       else if(cause instanceof SAXException)
         cause = ((SAXException)cause).getException();
       else
         cause = null;
     }
     while(null != cause);

     exception.setLocator(locator);
   }

   public static void printLocation(PrintStream pw, TransformerException exception)
   {
     printLocation(new PrintWriter(pw), exception);
   }

   public static void printLocation(java.io.PrintStream pw, org.xml.sax.SAXParseException exception)
   {
     printLocation(new PrintWriter(pw), exception);
   }

   public static void printLocation(PrintWriter pw, Throwable exception)
   {
     SourceLocator locator = null;
     Throwable cause = exception;

     // Try to find the locator closest to the cause.
     do
     {
       if(cause instanceof SAXParseException)
       {
         locator = new SAXSourceLocator((SAXParseException)cause);
       }
       else if (cause instanceof TransformerException)
       {
         SourceLocator causeLocator = ((TransformerException)cause).getLocator();
         if(null != causeLocator)
           locator = causeLocator;
       }
       if(cause instanceof TransformerException)
         cause = ((TransformerException)cause).getCause();
       else if(cause instanceof WrappedRuntimeException)
         cause = ((WrappedRuntimeException)cause).getException();
       else if(cause instanceof SAXException)
         cause = ((SAXException)cause).getException();
       else
         cause = null;
     }
     while(null != cause);

     if(null != locator)
     {
       // getErrorWriter().println("Parser fatal error: "+exception.getMessage());
       String id = (null != locator.getPublicId() )
                   ? locator.getPublicId()
                     : (null != locator.getSystemId())
                       ? locator.getSystemId() : XMLMessages.createXMLMessage(XMLErrorResources.ER_SYSTEMID_UNKNOWN, null); //"SystemId Unknown";

       pw.print(id + "; " +XMLMessages.createXMLMessage("line", null) + locator.getLineNumber()
                          + "; " +XMLMessages.createXMLMessage("column", null) + locator.getColumnNumber()+"; ");
     }
     else
       pw.print("("+XMLMessages.createXMLMessage(XMLErrorResources.ER_LOCATION_UNKNOWN, null)+")");
   }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	/*
	* $Id: DefaultErrorHandler.java 524806 2007-04-02 15:51:39Z zongaro $
	*/
	package org.apache.xml.utils;

	import java.io.PrintStream;
	import java.io.PrintWriter;

	import javax.xml.transform.ErrorListener;
	import javax.xml.transform.SourceLocator;
	import javax.xml.transform.TransformerException;

	import org.apache.xml.res.XMLErrorResources;
	import org.apache.xml.res.XMLMessages;

	import org.xml.sax.ErrorHandler;
	import org.xml.sax.SAXException;
	import org.xml.sax.SAXParseException;


	/**
	* Implement SAX error handler for default reporting.
	* @xsl.usage general
	*/
	public class DefaultErrorHandler implements ErrorHandler, ErrorListener
	{
	PrintWriter m_pw;

	/**
	* if this flag is set to true, we will rethrow the exception on
	* the error() and fatalError() methods. If it is false, the errors
	* are reported to System.err.
	*/
	boolean m_throwExceptionOnError = true;

	/**
	* Constructor DefaultErrorHandler
	*/
	public DefaultErrorHandler(PrintWriter pw)
	{
	m_pw = pw;
	}

	/**
	* Constructor DefaultErrorHandler
	*/
	public DefaultErrorHandler(PrintStream pw)
	{
	m_pw = new PrintWriter(pw, true);
	}

	/**
	* Constructor DefaultErrorHandler
	*/
	public DefaultErrorHandler()
	{
	this(true);
	}

	/**
	* Constructor DefaultErrorHandler
	*/
	public DefaultErrorHandler(boolean throwExceptionOnError)
	{
	// Defer creation of a PrintWriter until it's actually needed
	m_throwExceptionOnError = throwExceptionOnError;
	}

	/**
	* Retrieve <code>java.io.PrintWriter</code> to which errors are being
	* directed.
	* @return The <code>PrintWriter</code> installed via the constructor
	* or the default <code>PrintWriter</code>
	*/
	public PrintWriter getErrorWriter() {
	// Defer creating the java.io.PrintWriter until an error needs to be
	// reported.
	if (m_pw == null) {
	m_pw = new PrintWriter(System.err, true);
	}
	return m_pw;
	}

	/**
	* Receive notification of a warning.
	*
	* <p>SAX parsers will use this method to report conditions that
	* are not errors or fatal errors as defined by the XML 1.0
	* recommendation. The default behaviour is to take no action.</p>
	*
	* <p>The SAX parser must continue to provide normal parsing events
	* after invoking this method: it should still be possible for the
	* application to process the document through to the end.</p>
	*
	* @param exception The warning information encapsulated in a
	* SAX parse exception.
	* @throws SAXException Any SAX exception, possibly
	* wrapping another exception.
	*/
	public void warning(SAXParseException exception) throws SAXException
	{
	PrintWriter pw = getErrorWriter();

	printLocation(pw, exception);
	pw.println("Parser warning: " + exception.getMessage());
	}

	/**
	* Receive notification of a recoverable error.
	*
	* <p>This corresponds to the definition of "error" in section 1.2
	* of the W3C XML 1.0 Recommendation. For example, a validating
	* parser would use this callback to report the violation of a
	* validity constraint. The default behaviour is to take no
	* action.</p>
	*
	* <p>The SAX parser must continue to provide normal parsing events
	* after invoking this method: it should still be possible for the
	* application to process the document through to the end. If the
	* application cannot do so, then the parser should report a fatal
	* error even if the XML 1.0 recommendation does not require it to
	* do so.</p>
	*
	* @param exception The error information encapsulated in a
	* SAX parse exception.
	* @throws SAXException Any SAX exception, possibly
	* wrapping another exception.
	*/
	public void error(SAXParseException exception) throws SAXException
	{
	//printLocation(exception);
	// getErrorWriter().println(exception.getMessage());

	throw exception;
	}

	/**
	* Receive notification of a non-recoverable error.
	*
	* <p>This corresponds to the definition of "fatal error" in
	* section 1.2 of the W3C XML 1.0 Recommendation. For example, a
	* parser would use this callback to report the violation of a
	* well-formedness constraint.</p>
	*
	* <p>The application must assume that the document is unusable
	* after the parser has invoked this method, and should continue
	* (if at all) only for the sake of collecting addition error
	* messages: in fact, SAX parsers are free to stop reporting any
	* other events once this method has been invoked.</p>
	*
	* @param exception The error information encapsulated in a
	* SAX parse exception.
	* @throws SAXException Any SAX exception, possibly
	* wrapping another exception.
	*/
	public void fatalError(SAXParseException exception) throws SAXException
	{
	// printLocation(exception);
	// getErrorWriter().println(exception.getMessage());

	throw exception;
	}

	/**
	* Receive notification of a warning.
	*
	* <p>SAX parsers will use this method to report conditions that
	* are not errors or fatal errors as defined by the XML 1.0
	* recommendation. The default behaviour is to take no action.</p>
	*
	* <p>The SAX parser must continue to provide normal parsing events
	* after invoking this method: it should still be possible for the
	* application to process the document through to the end.</p>
	*
	* @param exception The warning information encapsulated in a
	* SAX parse exception.
	* @throws javax.xml.transform.TransformerException Any SAX exception, possibly
	* wrapping another exception.
	* @see javax.xml.transform.TransformerException
	*/
	public void warning(TransformerException exception) throws TransformerException
	{
	PrintWriter pw = getErrorWriter();

	printLocation(pw, exception);
	pw.println(exception.getMessage());
	}

	/**
	* Receive notification of a recoverable error.
	*
	* <p>This corresponds to the definition of "error" in section 1.2
	* of the W3C XML 1.0 Recommendation. For example, a validating
	* parser would use this callback to report the violation of a
	* validity constraint. The default behaviour is to take no
	* action.</p>
	*
	* <p>The SAX parser must continue to provide normal parsing events
	* after invoking this method: it should still be possible for the
	* application to process the document through to the end. If the
	* application cannot do so, then the parser should report a fatal
	* error even if the XML 1.0 recommendation does not require it to
	* do so.</p>
	*
	* @param exception The error information encapsulated in a
	* SAX parse exception.
	* @throws javax.xml.transform.TransformerException Any SAX exception, possibly
	* wrapping another exception.
	* @see javax.xml.transform.TransformerException
	*/
	public void error(TransformerException exception) throws TransformerException
	{
	// If the m_throwExceptionOnError flag is true, rethrow the exception.
	// Otherwise report the error to System.err.
	if (m_throwExceptionOnError)
	throw exception;
	else
	{
	PrintWriter pw = getErrorWriter();

	printLocation(pw, exception);
	pw.println(exception.getMessage());
	}
	}

	/**
	* Receive notification of a non-recoverable error.
	*
	* <p>This corresponds to the definition of "fatal error" in
	* section 1.2 of the W3C XML 1.0 Recommendation. For example, a
	* parser would use this callback to report the violation of a
	* well-formedness constraint.</p>
	*
	* <p>The application must assume that the document is unusable
	* after the parser has invoked this method, and should continue
	* (if at all) only for the sake of collecting addition error
	* messages: in fact, SAX parsers are free to stop reporting any
	* other events once this method has been invoked.</p>
	*
	* @param exception The error information encapsulated in a
	* SAX parse exception.
	* @throws javax.xml.transform.TransformerException Any SAX exception, possibly
	* wrapping another exception.
	* @see javax.xml.transform.TransformerException
	*/
	public void fatalError(TransformerException exception) throws TransformerException
	{
	// If the m_throwExceptionOnError flag is true, rethrow the exception.
	// Otherwise report the error to System.err.
	if (m_throwExceptionOnError)
	throw exception;
	else
	{
	PrintWriter pw = getErrorWriter();

	printLocation(pw, exception);
	pw.println(exception.getMessage());
	}
	}

	public static void ensureLocationSet(TransformerException exception)
	{
	// SourceLocator locator = exception.getLocator();
	SourceLocator locator = null;
	Throwable cause = exception;

	// Try to find the locator closest to the cause.
	do
	{
	if(cause instanceof SAXParseException)
	{
	locator = new SAXSourceLocator((SAXParseException)cause);
	}
	else if (cause instanceof TransformerException)
	{
	SourceLocator causeLocator = ((TransformerException)cause).getLocator();
	if(null != causeLocator)
	locator = causeLocator;
	}

	if(cause instanceof TransformerException)
	cause = ((TransformerException)cause).getCause();
	else if(cause instanceof SAXException)
	cause = ((SAXException)cause).getException();
	else
	cause = null;
	}
	while(null != cause);

	exception.setLocator(locator);
	}

	public static void printLocation(PrintStream pw, TransformerException exception)
	{
	printLocation(new PrintWriter(pw), exception);
	}

	public static void printLocation(java.io.PrintStream pw, org.xml.sax.SAXParseException exception)
	{
	printLocation(new PrintWriter(pw), exception);
	}

	public static void printLocation(PrintWriter pw, Throwable exception)
	{
	SourceLocator locator = null;
	Throwable cause = exception;

	// Try to find the locator closest to the cause.
	do
	{
	if(cause instanceof SAXParseException)
	{
	locator = new SAXSourceLocator((SAXParseException)cause);
	}
	else if (cause instanceof TransformerException)
	{
	SourceLocator causeLocator = ((TransformerException)cause).getLocator();
	if(null != causeLocator)
	locator = causeLocator;
	}
	if(cause instanceof TransformerException)
	cause = ((TransformerException)cause).getCause();
	else if(cause instanceof WrappedRuntimeException)
	cause = ((WrappedRuntimeException)cause).getException();
	else if(cause instanceof SAXException)
	cause = ((SAXException)cause).getException();
	else
	cause = null;
	}
	while(null != cause);

	if(null != locator)
	{
	// getErrorWriter().println("Parser fatal error: "+exception.getMessage());
	String id = (null != locator.getPublicId() )
	? locator.getPublicId()
	: (null != locator.getSystemId())
	? locator.getSystemId() : XMLMessages.createXMLMessage(XMLErrorResources.ER_SYSTEMID_UNKNOWN, null); //"SystemId Unknown";

	pw.print(id + "; " +XMLMessages.createXMLMessage("line", null) + locator.getLineNumber()
	+ "; " +XMLMessages.createXMLMessage("column", null) + locator.getColumnNumber()+"; ");
	}
	else
	pw.print("("+XMLMessages.createXMLMessage(XMLErrorResources.ER_LOCATION_UNKNOWN, null)+")");
	}
	}