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   /*
    * Copyright 2015 The Netty Project
    *
    * The Netty Project licenses this file to you 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:
    *
    *   https://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 io.netty.handler.codec.http.cookie;
  
  import static io.netty.handler.codec.http.cookie.CookieUtil.firstInvalidCookieNameOctet;
  import static io.netty.handler.codec.http.cookie.CookieUtil.firstInvalidCookieValueOctet;
  import static io.netty.handler.codec.http.cookie.CookieUtil.unwrapValue;
  
  /**
   * Parent of Client and Server side cookie encoders
   */
  public abstract class CookieEncoder {
  
      protected final boolean strict;
  
      protected CookieEncoder(boolean strict) {
          this.strict = strict;
      }
  
      protected void validateCookie(String name, String value) {
          if (strict) {
              int pos;
  
              if ((pos = firstInvalidCookieNameOctet(name)) >= 0) {
                  throw new IllegalArgumentException("Cookie name contains an invalid char: " + name.charAt(pos));
              }
  
              CharSequence unwrappedValue = unwrapValue(value);
              if (unwrappedValue == null) {
                  throw new IllegalArgumentException("Cookie value wrapping quotes are not balanced: " + value);
              }
  
              if ((pos = firstInvalidCookieValueOctet(unwrappedValue)) >= 0) {
                  throw new IllegalArgumentException("Cookie value contains an invalid char: " +
                                                     unwrappedValue.charAt(pos));
              }
          }
      }
  }