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/*
 * 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
 * modification, 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 "Xalan" 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 [email protected].
 *
 * 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 (INCLUDING, 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 based on software copyright (c) 1999, Lotus
 * Development Corporation., http://www.lotus.com.  For more
 * information on the Apache Software Foundation, please see
 * .
 */

package com.sta.cts;

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;

import org.apache.xml.utils.SAXSourceLocator;
import org.apache.xml.utils.WrappedRuntimeException;

/**
 * Name: MyErrorHandler
 * Description: Implement SAX error handler for default reporting.
 * 
 * Copyright: Copyright (c) 20xx, 2016-2019, 2021
 * Company: >StA-Soft<
 * @author StA
 * @version 1.0
 */

public class MyErrorHandler implements ErrorHandler, ErrorListener
{

  /**
   * Ein PrintWriter.
   */

  private PrintWriter m_pw;

  /**
   * Constructor MyErrorHandler.
   * @param pw PrintWriter
   */

  public MyErrorHandler(PrintWriter pw)
  {
    m_pw = pw;
  }

  /**
   * Constructor MyErrorHandler.
   * @param pw PrintStream
   */

  public MyErrorHandler(PrintStream pw)
  {
    m_pw = new PrintWriter(pw, true);
  }

  /**
   * Constructor MyErrorHandler.
   */

  public MyErrorHandler()
  {
    m_pw = new PrintWriter(System.err, true);
  }

  @Override
  public void warning(SAXParseException exception) throws SAXException
  {
    printLocation(m_pw, exception);
    m_pw.println("Parser warning: " + exception.getMessage());
  }

  @Override
  public void error(SAXParseException exception) throws SAXException
  {
    // printLocation(exception);
    // m_pw.println(exception.getMessage());
    throw exception;
  }

  @Override
  public void fatalError(SAXParseException exception) throws SAXException
  {
    // printLocation(exception);
    // m_pw.println(exception.getMessage());
    throw exception;
  }

  @Override
  public void warning(TransformerException exception) throws TransformerException
  {
    printLocation(m_pw, exception);
    m_pw.println(exception.getMessage());
  }

  @Override
  public void error(TransformerException exception) throws TransformerException
  {
    // printLocation(exception);
    // ensureLocationSet(exception);
    throw exception;
  }

  @Override
  public void fatalError(TransformerException exception) throws TransformerException
  {
    // printLocation(exception);
    // ensureLocationSet(exception);
    throw exception;
  }

  /**
   * Pr?fung.
   * @param exception Exception
   */

  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 (causeLocator != null)
        {
          locator = causeLocator;
        }
      }
      if (cause instanceof TransformerException)
      {
        cause = cause.getCause();
      }
      else if (cause instanceof SAXException)
      {
        cause = ((SAXException) cause).getException();
      }
      else
      {
        cause = null;
      }
    }
    while (cause != null);
    exception.setLocator(locator);
  }

  /**
   * Location ausgeben.
   * @param ps Print-Stream
   * @param exception Exception
   */

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

  /**
   * Location ausgeben.
   * @param ps Print-Stream
   * @param exception Exception
   */

  public static void printLocation(PrintStream ps, SAXParseException exception)
  {
    printLocation(new PrintWriter(ps), exception);
  }

  /**
   * Location ausgeben.
   * @param pw Print-Writer
   * @param exception 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 (causeLocator != null)
        {
          locator = causeLocator;
        }
      }
      if (cause instanceof TransformerException)
      {
        cause = cause.getCause();
      }
      else if (cause instanceof WrappedRuntimeException)
      {
        cause = ((WrappedRuntimeException) cause).getException();
      }
      else if (cause instanceof SAXException)
      {
        cause = ((SAXException) cause).getException();
      }
      else
      {
        cause = null;
      }
    }
    while (cause != null);

    if (locator != null)
    {
      // m_pw.println("Parser fatal error: "+exception.getMessage());
      String id = locator.getPublicId() != null ? locator.getPublicId() : locator.getSystemId() != null ? 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()+"; ");
      /*
      try
      {
        URL url = new URL(id);
        id = new File(url.getFile()).getName();
      }
      catch (Exception ex)
      {
      }
      pw.print("  " + ConvTools.formatStringR(id + " (" + locator.getLineNumber() + "):", 30) + " ");
      */
    }
    else
    {
      pw.print("(" + XMLMessages.createXMLMessage(XMLErrorResources.ER_LOCATION_UNKNOWN, null) + ")");
    }
  }

}