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1   package org.apache.continuum.webdav.util;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.apache.commons.lang.StringUtils;
23  
24  import java.util.ArrayList;
25  import java.util.List;
26  import java.util.Locale;
27  
28  public class WebdavMethodUtil
29  {
30      private static final List<String> READ_METHODS;
31  
32      static
33      {
34          READ_METHODS = new ArrayList<String>();
35          READ_METHODS.add( "HEAD" );
36          READ_METHODS.add( "GET" );
37          READ_METHODS.add( "PROPFIND" );
38          READ_METHODS.add( "OPTIONS" );
39          READ_METHODS.add( "REPORT" );
40      }
41  
42      public static boolean isReadMethod( String method )
43      {
44          if ( StringUtils.isBlank( method ) )
45          {
46              throw new IllegalArgumentException( "WebDAV method is empty" );
47          }
48          return READ_METHODS.contains( method.toUpperCase( Locale.US ) );
49      }
50  }