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1   /*
2    *   Copyright 2005 The Apache Software Foundation
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  
18  package org.apache.asn1.der;
19  
20  import java.io.ByteArrayOutputStream;
21  import java.io.IOException;
22  
23  /***
24   * DER Application Specific object.
25   */
26  public class DERApplicationSpecific extends DERObject
27  {
28      private int tag;
29      
30      /***
31       * Basic DERObject constructor.
32       */
33      public DERApplicationSpecific( int tag, byte[] value )
34      {
35      	super( tag, value );
36          this.tag = tag;
37      }
38      
39      /***
40       * Static factory method, type-conversion operator.
41       */
42      public static DERApplicationSpecific valueOf( int tag, DEREncodable object ) 
43          throws IOException 
44      {
45          tag = tag | CONSTRUCTED;
46          
47          ByteArrayOutputStream baos = new ByteArrayOutputStream();
48          ASN1OutputStream aos = new ASN1OutputStream( baos );
49          
50          aos.writeObject( object );
51          
52          return new DERApplicationSpecific( tag, baos.toByteArray() );
53      }
54      
55      public int getApplicationTag() 
56      {
57          return tag & 0x1F;
58      }
59      
60      public DEREncodable getObject() 
61          throws IOException 
62      {
63          return new ASN1InputStream( getOctets() ).readObject();
64      }
65      
66      public void encode( ASN1OutputStream out ) throws IOException
67      {
68          out.writeEncoded( APPLICATION | tag, value );
69      }
70  }
71