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/**
 * Copyright (c) 2016-2022, wee0.com.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/
package wee0.net;

/**
 * An RFC 2045 Media Type, appropriate to describe
 * the content type of an HTTP request or response body.
 * 
 * @author		baihw
 * @date 		2018年7月6日
 **/

/**
 *  *  examples:
 * 
 **/

public enum HttpMediaType{

	/**
	 * JSON类型
	 */
	JSON( "application/json;charset=UTF-8" ),

	/**
	 * XML类型
	 */
	XML( "text/xml;charset=UTF-8" );

	/**
	 * 当前类型对应的值。
	 */
	private final String _VAL;

	/**
	 * 设置当前类型对应的值。
	 * 
	 * @param val 当前类型对应的值。
	 */
	HttpMediaType( String val ){
		this._VAL = val;
	}

	/**
	 * @return 当前类型对应的值。
	 */
	public String value(){
		return this._VAL;
	}

	/**
	 * 修改值中的charset指定。
	 * 
	 * @param charset 要修改的字符集。
	 * @return 修改后的值
	 */
	public String valueCharset( String charset ){
		if( null != charset && 5 < ( charset = charset.trim() ).length() ){
			//
			return this._VAL.substring( 0, this._VAL.length() - 5 ).concat( charset );
		}
		return this._VAL;
	}

} // end class