w3c.css.error.ErrorReportHTML Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of cssvalidator Show documentation
Backend for the W3C CSS Validation Service
There is a newer version: 1.0.8
// $Id$
// 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 org.apache.velocity.exception.ResourceNotFoundException;
import org.w3c.css.util.ApplContext;
import org.w3c.css.util.Util;
import org.xml.sax.SAXParseException;

import java.io.DataInputStream;
import java.io.EOFException;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URL;

/**
 * ErrorReportHTML

 * Created: Jul 13, 2005 2:05:51 PM

 * 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("Target: " + Util.escapeHTML(title) + "");
                out.println("");
                if (e instanceof ResourceNotFoundException) {
                    out.println("" + e.toString() + "");
                } else if (e instanceof IOException) {
                    out.println("I/O Error: ");
                    out.println(Util.escapeHTML(e.getMessage()));
                } else if (e instanceof SAXParseException) {
                    SAXParseException saxe = (SAXParseException) e;
                    out.println("
Please, validate your XML document" + " first!");
                    if (saxe.getLineNumber() != -1) {
                        out.print("Line ");
                        out.print(saxe.getLineNumber());
                        out.println("");
                    }
                    if (saxe.getColumnNumber() != -1) {
                        out.print("Column ");
                        out.print(saxe.getColumnNumber());
                        out.print("\n");
                    }
                    out.println("" + Util.escapeHTML(e.getMessage()));
                } else if (e instanceof NullPointerException) {
                    out.println("
Oups! Internal error!
");
                    e.printStackTrace();
                } else {
                    out.println(e.toString());
                }
                out.println("
\n
\n
\nwww-validator-css\n");
                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();
            }
        }
    }

}