TarConstants


1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   *
17   */
18  
19  /*
20   * This package is based on the work done by Timothy Gerard Endres
21   * (time@ice.com) to whom the Ant project is very grateful for his great code.
22   */
23  
24  package org.apache.tools.tar;
25  
26  /**
27   * This interface contains all the definitions used in the package.
28   *
29   */
30  
31  public interface TarConstants {
32  
33      /**
34       * The length of the name field in a header buffer.
35       */
36      int    NAMELEN = 100;
37  
38      /**
39       * The length of the mode field in a header buffer.
40       */
41      int    MODELEN = 8;
42  
43      /**
44       * The length of the user id field in a header buffer.
45       */
46      int    UIDLEN = 8;
47  
48      /**
49       * The length of the group id field in a header buffer.
50       */
51      int    GIDLEN = 8;
52  
53      /**
54       * The length of the checksum field in a header buffer.
55       */
56      int    CHKSUMLEN = 8;
57  
58      /**
59       * The length of the size field in a header buffer.
60       */
61      int    SIZELEN = 12;
62  
63      /**
64       * The maximum size of a file in a tar archive (That's 11 sevens, octal).
65       */
66      long   MAXSIZE = 077777777777L;
67  
68      /**
69       * The length of the magic field in a header buffer.
70       */
71      int    MAGICLEN = 8;
72  
73      /**
74       * The length of the modification time field in a header buffer.
75       */
76      int    MODTIMELEN = 12;
77  
78      /**
79       * The length of the user name field in a header buffer.
80       */
81      int    UNAMELEN = 32;
82  
83      /**
84       * The length of the group name field in a header buffer.
85       */
86      int    GNAMELEN = 32;
87  
88      /**
89       * The length of the devices field in a header buffer.
90       */
91      int    DEVLEN = 8;
92  
93      /**
94       * LF_ constants represent the "link flag" of an entry, or more commonly,
95       * the "entry type". This is the "old way" of indicating a normal file.
96       */
97      byte   LF_OLDNORM = 0;
98  
99      /**
100      * Normal file type.
101      */
102     byte   LF_NORMAL = (byte) '0';
103 
104     /**
105      * Link file type.
106      */
107     byte   LF_LINK = (byte) '1';
108 
109     /**
110      * Symbolic link file type.
111      */
112     byte   LF_SYMLINK = (byte) '2';
113 
114     /**
115      * Character device file type.
116      */
117     byte   LF_CHR = (byte) '3';
118 
119     /**
120      * Block device file type.
121      */
122     byte   LF_BLK = (byte) '4';
123 
124     /**
125      * Directory file type.
126      */
127     byte   LF_DIR = (byte) '5';
128 
129     /**
130      * FIFO (pipe) file type.
131      */
132     byte   LF_FIFO = (byte) '6';
133 
134     /**
135      * Contiguous file type.
136      */
137     byte   LF_CONTIG = (byte) '7';
138 
139     /**
140      * The magic tag representing a POSIX tar archive.
141      */
142     String   TMAGIC = "ustar";
143 
144     /**
145      * The magic tag representing a GNU tar archive.
146      */
147     String   GNU_TMAGIC = "ustar  ";
148 
149     /**
150      * The namr of the GNU tar entry which contains a long name.
151      */
152     String   GNU_LONGLINK = "././@LongLink";
153 
154     /**
155      * Identifies the *next* file on the tape as having a long name.
156      */
157     byte LF_GNUTYPE_LONGNAME = (byte) 'L';
158 }
159
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