001/*
002 * This file is part of the JDrupes non-blocking HTTP Codec
003 * Copyright (C) 2016, 2017  Michael N. Lipp
004 *
005 * This program is free software; you can redistribute it and/or modify it 
006 * under the terms of the GNU Lesser General Public License as published
007 * by the Free Software Foundation; either version 3 of the License, or 
008 * (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful, but 
011 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
012 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
013 * License for more details.
014 *
015 * You should have received a copy of the GNU Lesser General Public License along 
016 * with this program; if not, see <http://www.gnu.org/licenses/>.
017 */
018
019package org.jdrupes.httpcodec.protocols.http;
020
021import org.jdrupes.httpcodec.Codec;
022import org.jdrupes.httpcodec.types.Converters;
023
024/**
025 * The base class for HTTP codecs.
026 * 
027 * @param <T> the type of the message header processed by the codec
028 */
029public abstract class HttpCodec<T extends HttpMessageHeader>
030        implements Codec {
031
032        protected T messageHeader = null;
033        
034        protected String bodyCharset() {
035                return messageHeader
036                        .findField(HttpField.CONTENT_TYPE, Converters.MEDIA_TYPE)
037                        .map(f -> f.value().parameter("charset")).orElse("utf-8");
038        }
039        
040}