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Source code: gnu/javax/print/ipp/IppDelimiterTag.java


1   /* IppDelimiterTag.java -- 
2      Copyright (C) 2006 Free Software Foundation, Inc.
3   
4   This file is part of GNU Classpath.
5   
6   GNU Classpath is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10  
11  GNU Classpath is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  General Public License for more details.
15  
16  You should have received a copy of the GNU General Public License
17  along with GNU Classpath; see the file COPYING.  If not, write to the
18  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19  02110-1301 USA.
20  
21  Linking this library statically or dynamically with other modules is
22  making a combined work based on this library.  Thus, the terms and
23  conditions of the GNU General Public License cover the whole
24  combination.
25  
26  As a special exception, the copyright holders of this library give you
27  permission to link this library with independent modules to produce an
28  executable, regardless of the license terms of these independent
29  modules, and to copy and distribute the resulting executable under
30  terms of your choice, provided that you also meet, for each linked
31  independent module, the terms and conditions of the license of that
32  module.  An independent module is a module which is not derived from
33  or based on this library.  If you modify this library, you may extend
34  this exception to your version of the library, but you are not
35  obligated to do so.  If you do not wish to do so, delete this
36  exception statement from your version. */
37  
38  
39  package gnu.javax.print.ipp;
40  
41  
42  /**
43   * IPP Delimiter Tags as described in RFC 2910 section 3.5.1.
44   * <p>
45   * Every delimiter tag value can occur in the protocol field 
46   * begin-attribute-group-tag and indicates that the following
47   * attributes will be part of the named group.<br>
48   * The end-of-attributes-tag signals the end of the attributes
49   * section in the IPP request/response and therefore the beginning
50   * of the data section (if any). 
51   * </p>
52   * 
53   * @author Wolfgang Baer (WBaer@gmx.de)
54   */
55  public final class IppDelimiterTag
56  {
57    /** Start of the operation attributes group section. */
58    public static final byte OPERATION_ATTRIBUTES_TAG = 0x01;
59    
60    /** Start of the job attributes group section. */
61    public static final byte JOB_ATTRIBUTES_TAG = 0x02;
62    
63    /** End of the attributes section and begin of data section. */
64    public static final byte END_OF_ATTRIBUTES_TAG = 0x03;
65    
66    /** Start of the printer attributes group section. */
67    public static final byte PRINTER_ATTRIBUTES_TAG = 0x04;
68    
69    /** Start of the unsupported attributes group section. */
70    public static final byte UNSUPPORTED_ATTRIBUTES_TAG = 0x05;
71    
72      
73    // 0x00 reserved for definition in a future IETF
74    // standards track document
75    
76    // 0x06-0x0f reserved for future delimiters in IETF
77    // standards track documents
78      
79    private IppDelimiterTag()
80    {
81      // not to be instantiated
82    }
83      
84    /**
85     * Tests if given value corresponds to a 
86     * delimiter tag value.
87     * 
88     * @param value the value to test for
89     * @return <code>true</code> if, <code>false</code> otherwise.
90     */
91    public static boolean isDelimiterTag(byte value) 
92    {
93      if (value >= 0x01 && value <= 0x05)
94        return true;
95      
96      return false;
97    }
98  
99  }