// $Id: ErrorReportHTML.java,v 1.4 2007-07-13 13:32:21 julien Exp $

// Author: Jean-Guilhem Rouel

// (c) COPYRIGHT MIT, ERCIM and Keio, 2003.

// Please first read the full copyright statement in file COPYRIGHT.html

package org.w3c.css.error;

import java.io.DataInputStream;

import java.io.EOFException;

import java.io.IOException;

import java.io.PrintWriter;

import java.net.URL;

import org.apache.velocity.exception.ResourceNotFoundException;

import org.w3c.css.util.ApplContext;

import org.w3c.css.util.Util;

import org.xml.sax.SAXParseException;

/**

 * ErrorReportHTML<br />

 * Created: Jul 13, 2005 2:05:51 PM<br />

 * This class is used to create an (x)html page when a URI error is thrown by

 * the servlet

 */

public class ErrorReportHTML extends ErrorReport {

	// ApplContext ac;

	String title;

	Exception e;

	public ErrorReportHTML(ApplContext ac, String title, String output, Exception e) {

		// ac is not used for now, but may be useful

		// this.ac = ac;

		this.title = title;

		this.e = e;

	}

	/**

	 * @see org.w3c.css.error.ErrorReport#print(java.io.PrintWriter)

	 */

	public void print(PrintWriter out) {

		try {

			URL localURL = ErrorReportHTML.class.getResource("error.html");

			DataInputStream in = new DataInputStream(localURL.openStream());

			try {

				while (true) {

					out.print((char) in.readUnsignedByte());

				}

			} catch (EOFException eof) {

				out.println("<h2>Target: " + Util.escapeHTML(title) + "</h2>");

				out.println("<div class=\"error\">");

				if (e instanceof ResourceNotFoundException) {

					out.println("<p>" + e.toString() + "</p>");

				} else if (e instanceof IOException) {

					out.println("<p>I/O Error: ");

					out.println(Util.escapeHTML(e.getMessage()));

				} else if (e instanceof SAXParseException) {

					SAXParseException saxe = (SAXParseException) e;

					out.println("<p>Please, validate your XML document" + " first!</p>");

					if (saxe.getLineNumber() != -1) {

						out.print("<p>Line ");

						out.print(saxe.getLineNumber());

						out.println("</p>");

					}

					if (saxe.getColumnNumber() != -1) {

						out.print("<p>Column ");

						out.print(saxe.getColumnNumber());

						out.print("</p>\n");

					}

					out.println("<p>" + Util.escapeHTML(e.getMessage()));

				} else if (e instanceof NullPointerException) {

					out.println("<p>Oups! Internal error!</p><p>");

					e.printStackTrace();

				} else {

					out.println(e.toString());

				}

				out.println("</p></div>\n<hr />\n<p><img src='images/mwc"

						+ "ss.gif' alt='made with CSS' /></p>\n<addres" + "s><a href='Email.html'>www-validator-css</a"

						+ "></address>\n</body></html>");

				out.flush();

				/*

				 * System.err.println("CSS Validator: request failed.");

				 * e.printStackTrace();

				 */

			}

		} catch (Exception unknown) {

			if (out != null) {

				out.println("org.w3c.css.servlet.CssValidator: couldn't " + "load  error file");

				out.flush();

			}

			unknown.printStackTrace();

		} finally {

			if (out != null) {

				out.close();

			}

		}

	}

}