content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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 com.alibaba.nacos.common.http.param;
  
  import com.alibaba.nacos.api.common.Constants;
  import com.alibaba.nacos.common.utils.StringUtils;
  
  /**
   * Http Media type.
   *
   * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
   */
  public final class MediaType {
      
      public static final String APPLICATION_ATOM_XML = "application/atom+xml";
      
      public static final String APPLICATION_FORM_URLENCODED = "application/x-www-form-urlencoded;charset=UTF-8";
      
      public static final String APPLICATION_OCTET_STREAM = "application/octet-stream";
      
      public static final String APPLICATION_SVG_XML = "application/svg+xml";
      
      public static final String APPLICATION_XHTML_XML = "application/xhtml+xml";
      
      public static final String APPLICATION_XML = "application/xml;charset=UTF-8";
      
      public static final String APPLICATION_JSON = "application/json;charset=UTF-8";
      
      public static final String MULTIPART_FORM_DATA = "multipart/form-data;charset=UTF-8";
      
      public static final String TEXT_HTML = "text/html;charset=UTF-8";
      
      public static final String TEXT_PLAIN = "text/plain;charset=UTF-8";
      
      private MediaType(String type, String charset) {
          this.type = type;
          this.charset = charset;
      }
      
      /**
       * content type.
       */
      private final String type;
      
      /**
       * content type charset.
       */
      private final String charset;
      
      /**
       * Parse the given String contentType into a {@code MediaType} object.
       *
       * @param contentType mediaType
       * @return MediaType
       */
      public static MediaType valueOf(String contentType) {
          if (StringUtils.isEmpty(contentType)) {
              throw new IllegalArgumentException("MediaType must not be empty");
          }
          String[] values = contentType.split(";");
          String charset = Constants.ENCODE;
          for (String value : values) {
              if (value.startsWith("charset=")) {
                  charset = value.substring("charset=".length());
              }
          }
          return new MediaType(values[0], charset);
      }
      
      /**
       * Use the given contentType and charset to assemble into a {@code MediaType} object.
       *
       * @param contentType contentType
       * @param charset charset
       * @return MediaType
       */
      public static MediaType valueOf(String contentType, String charset) {
          if (StringUtils.isEmpty(contentType)) {
              throw new IllegalArgumentException("MediaType must not be empty");
          }
          String[] values = contentType.split(";");
          return new MediaType(values[0], StringUtils.isEmpty(charset) ? Constants.ENCODE : charset);
      }
      
      public String getType() {
          return type;
      }
      
      public String getCharset() {
          return charset;
      }
      
      @Override
      public String toString() {
          return type + ";charset=" + charset;
      }
  }
  