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      1 /*
      2  * Copyright 2009 Mike Cumings
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *   http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.kenai.jbosh;
     18 
     19 /**
     20  * Data type representing the getValue of the {@code accept} attribute of the
     21  * {@code bosh} element.
     22  */
     23 final class AttrAccept extends AbstractAttr<String> {
     24 
     25     /**
     26      * Array of the accepted encodings.
     27      */
     28     private final String[] encodings;
     29 
     30     /**
     31      * Creates a new attribute object.
     32      *
     33      * @param val attribute getValue
     34      * @throws BOSHException on parse or validation failure
     35      */
     36     private AttrAccept(final String val) {
     37         super(val);
     38         encodings = val.split("[\\s,]+");
     39     }
     40 
     41     /**
     42      * Creates a new attribute instance from the provided String.
     43      *
     44      * @param str string representation of the attribute
     45      * @return attribute instance or {@code null} if provided string is
     46      *  {@code null}
     47      * @throws BOSHException on parse or validation failure
     48      */
     49     static AttrAccept createFromString(final String str)
     50     throws BOSHException {
     51         if (str == null) {
     52             return null;
     53         } else {
     54             return new AttrAccept(str);
     55         }
     56     }
     57 
     58     /**
     59      * Determines whether or not the specified encoding is supported.
     60      *
     61      * @param name encoding name
     62      * @result {@code true} if the encoding is accepted, {@code false}
     63      *  otherwise
     64      */
     65     boolean isAccepted(final String name) {
     66         for (String str : encodings) {
     67             if (str.equalsIgnoreCase(name)) {
     68                 return true;
     69             }
     70         }
     71         return false;
     72     }
     73 
     74 }
     75