michael@0: /*
michael@0:  * ====================================================================
michael@0:  * Licensed to the Apache Software Foundation (ASF) under one
michael@0:  * or more contributor license agreements.  See the NOTICE file
michael@0:  * distributed with this work for additional information
michael@0:  * regarding copyright ownership.  The ASF licenses this file
michael@0:  * to you under the Apache License, Version 2.0 (the
michael@0:  * "License"); you may not use this file except in compliance
michael@0:  * with the License.  You may obtain a copy of the License at
michael@0:  *
michael@0:  *   http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing,
michael@0:  * software distributed under the License is distributed on an
michael@0:  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
michael@0:  * KIND, either express or implied.  See the License for the
michael@0:  * specific language governing permissions and limitations
michael@0:  * under the License.
michael@0:  * ====================================================================
michael@0:  *
michael@0:  * This software consists of voluntary contributions made by many
michael@0:  * individuals on behalf of the Apache Software Foundation.  For more
michael@0:  * information on the Apache Software Foundation, please see
michael@0:  * <http://www.apache.org/>.
michael@0:  *
michael@0:  */
michael@0: 
michael@0: package ch.boye.httpclientandroidlib.cookie;
michael@0: 
michael@0: import java.io.Serializable;
michael@0: import java.util.Comparator;
michael@0: 
michael@0: import ch.boye.httpclientandroidlib.annotation.Immutable;
michael@0: 
michael@0: /**
michael@0:  * This cookie comparator can be used to compare identity of cookies.
michael@0:  * <p>
michael@0:  *  Cookies are considered identical if their names are equal and
michael@0:  *  their domain attributes match ignoring case.
michael@0:  *
michael@0:  * @since 4.0
michael@0:  */
michael@0: @Immutable
michael@0: public class CookieIdentityComparator implements Serializable, Comparator<Cookie> {
michael@0: 
michael@0:     private static final long serialVersionUID = 4466565437490631532L;
michael@0: 
michael@0:     public int compare(final Cookie c1, final Cookie c2) {
michael@0:         int res = c1.getName().compareTo(c2.getName());
michael@0:         if (res == 0) {
michael@0:             // do not differentiate empty and null domains
michael@0:             String d1 = c1.getDomain();
michael@0:             if (d1 == null) {
michael@0:                 d1 = "";
michael@0:             } else if (d1.indexOf('.') == -1) {
michael@0:                 d1 = d1 + ".local";
michael@0:             }
michael@0:             String d2 = c2.getDomain();
michael@0:             if (d2 == null) {
michael@0:                 d2 = "";
michael@0:             } else if (d2.indexOf('.') == -1) {
michael@0:                 d2 = d2 + ".local";
michael@0:             }
michael@0:             res = d1.compareToIgnoreCase(d2);
michael@0:         }
michael@0:         if (res == 0) {
michael@0:             String p1 = c1.getPath();
michael@0:             if (p1 == null) {
michael@0:                 p1 = "/";
michael@0:             }
michael@0:             String p2 = c2.getPath();
michael@0:             if (p2 == null) {
michael@0:                 p2 = "/";
michael@0:             }
michael@0:             res = p1.compareTo(p2);
michael@0:         }
michael@0:         return res;
michael@0:     }
michael@0: 
michael@0: }