com.sun.grizzly.util.http.HtmlHelper Maven / Gradle / Ivy

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2007-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
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 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.grizzly.util.http;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.util.Date;

/**
 * Utility class used to generate HTML pages.
 *
 * @author Jean-Francois Arcand
 */
public class HtmlHelper{    
    
    private final static String CSS =
        "H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} " +
        "H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} " +
        "H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} " +
        "BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} " +
        "B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} " +
        "P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}" +
        "A {color : black;}" +
        "HR {color : #525D76;}";

    /**
     * CharBuffer used to store the HTML response, containing
     * the headers and the body of the response.
     */
    private static CharBuffer reponseBuffer = CharBuffer.allocate(4096);
    

    /**
     * Encoder used to encode the HTML response
     */
    private static CharsetEncoder encoder =
                                          Charset.forName("UTF-8").newEncoder();

    /**
     * HTTP end line.
     */
    private static String NEWLINE = "\r\n";


    /**
     * HTTP OK header
     */
    public final static String OK = "HTTP/1.1 200 OK" + NEWLINE;
    

    /**
     * HTTP Bas Request
     */
    public final static String BAD_REQUEST 
        = "HTTP/1.1 400 Bad Request" + NEWLINE;
 
    
    /**
     * Return a defauk error page.
     *
     * @return A {@link ByteBuffer} containings the HTTP response.
     */
    public synchronized static ByteBuffer 
            getErrorPage(String message, String code, String serverName) throws IOException {
        String body = prepareBody(message,serverName);
        reponseBuffer.clear();
        reponseBuffer.put(body);
        reponseBuffer.flip();
        return encoder.encode(reponseBuffer);
    }

    
    /**
     * Utility to add headers to the HTTP response.
     */
    private static void appendHeaderValue(String name, String value) {
        reponseBuffer.put(name);
        reponseBuffer.put(": ");
        reponseBuffer.put(value);
        reponseBuffer.put(NEWLINE);
    }


    /**
     * Prepare the HTTP body containing the error messages.
     */
    private static String prepareBody(String message, String serverName){
        StringBuilder sb = new StringBuilder();

        sb.append("");
        sb.append(serverName);
        sb.append("");
        sb.append(" ");
        sb.append("");
        sb.append("");
        sb.append(message);
        sb.append("");
        sb.append("");
        sb.append("").append(serverName).append("");
        sb.append("");
        return sb.toString();
    }

}
com.sun.grizzly.util.http.HtmlHelper Maven / Gradle / Ivy

"); sb.append(message); sb.append("

").append(serverName).append("
