DialectSelector


1   /*
2    * Copyright (C) 2005 Alfresco, Inc.
3    *
4    * Licensed under the Mozilla Public License version 1.1 
5    * with a permitted attribution clause. You may obtain a
6    * copy of the License at
7    *
8    *   http://www.alfresco.org/legal/license.txt
9    *
10   * Unless required by applicable law or agreed to in writing,
11   * software distributed under the License is distributed on an
12   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13   * either express or implied. See the License for the specific
14   * language governing permissions and limitations under the
15   * License.
16   */
17  package org.alfresco.filesys.smb;
18  
19  import java.util.BitSet  ;
20  
21  /**
22   * SMB dialect selector class.
23   */
24  public class DialectSelector
25  {
26  
27      // Bit set of selected SMB dialects.
28  
29      private BitSet   dialects;
30  
31      /**
32       * Construct a new SMB dialect selector with the SMB core protocol selected.
33       */
34  
35      public DialectSelector()
36      {
37          dialects = new BitSet  (Dialect.Max);
38  
39          // Select only the core protocol by default
40  
41          ClearAll();
42          AddDialect(Dialect.Core);
43      }
44  
45      /**
46       * Add a dialect to the list of available SMB dialects.
47       * 
48       * @param idx Index of the dialect to add to the available dialects.
49       * @exception java.lang.ArrayIndexOutOfBoundsException Invalid dialect index.
50       */
51  
52      public void AddDialect(int d) throws java.lang.ArrayIndexOutOfBoundsException  
53      {
54          dialects.set(d);
55      }
56  
57      /**
58       * Clear all the dialect bits.
59       */
60  
61      public void ClearAll()
62      {
63          for (int i = 0; i < dialects.size(); dialects.clear(i++))
64              ;
65      }
66  
67      /**
68       * Copy the SMB dialect selector settings.
69       * 
70       * @param dsel DialectSelector
71       */
72      public void copyFrom(DialectSelector dsel)
73      {
74  
75          // Clear all current settings
76  
77          ClearAll();
78  
79          // Copy the settings
80  
81          for (int i = 0; i < Dialect.Max; i++)
82          {
83  
84              // Check if the dialect is enabled
85  
86              if (dsel.hasDialect(i))
87                  AddDialect(i);
88          }
89      }
90  
91      /**
92       * Determine if the specified SMB dialect is selected/available.
93       * 
94       * @param idx Index of the dialect to test for.
95       * @return true if the SMB dialect is available, else false.
96       * @exception java.lang.ArrayIndexOutOfBoundsException Invalid dialect index.
97       */
98  
99      public boolean hasDialect(int d) throws java.lang.ArrayIndexOutOfBoundsException  
100     {
101         return dialects.get(d);
102     }
103 
104     /**
105      * Determine if the core SMB dialect is enabled
106      * 
107      * @return boolean
108      */
109     public boolean hasCore()
110     {
111         if (hasDialect(Dialect.Core) || hasDialect(Dialect.CorePlus))
112             return true;
113         return false;
114     }
115 
116     /**
117      * Determine if the LanMan SMB dialect is enabled
118      * 
119      * @return boolean
120      */
121     public boolean hasLanMan()
122     {
123         if (hasDialect(Dialect.DOSLanMan1) || hasDialect(Dialect.DOSLanMan2) || hasDialect(Dialect.LanMan1)
124                 || hasDialect(Dialect.LanMan2) || hasDialect(Dialect.LanMan2_1))
125             return true;
126         return false;
127     }
128 
129     /**
130      * Determine if the NT SMB dialect is enabled
131      * 
132      * @return boolean
133      */
134     public boolean hasNT()
135     {
136         if (hasDialect(Dialect.NT))
137             return true;
138         return false;
139     }
140 
141     /**
142      * Remove an SMB dialect from the list of available dialects.
143      * 
144      * @param idx Index of the dialect to remove.
145      * @exception java.lang.ArrayIndexOutOfBoundsException Invalid dialect index.
146      */
147 
148     public void RemoveDialect(int d) throws java.lang.ArrayIndexOutOfBoundsException  
149     {
150         dialects.clear(d);
151     }
152 
153     /**
154      * Return the dialect selector list as a string.
155      * 
156      * @return java.lang.String
157      */
158     public String   toString()
159     {
160 
161         // Create a string buffer to build the return string
162 
163         StringBuffer   str = new StringBuffer  ();
164         str.append("[");
165 
166         for (int i = 0; i < dialects.size(); i++)
167         {
168             if (hasDialect(i))
169             {
170                 str.append(Dialect.DialectTypeString(i));
171                 str.append(",");
172             }
173         }
174 
175         // Trim the last comma and return the string
176 
177         if (str.length() > 1)
178             str.setLength(str.length() - 1);
179         str.append("]");
180         return str.toString();
181     }
182 }
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