1   /*
2    * %W% %E%
3    *
4    * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
5    * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   package java.util.zip;
9   
10  /*
11   * This interface defines the constants that are used by the classes
12   * which manipulate ZIP files.
13   *
14   * @version %I%, %G%
15   * @author  David Connelly
16   */
17  interface ZipConstants {
18      /*
19       * Header signatures
20       */
21      static long LOCSIG = 0x04034b50L;   // "PK\003\004"
22      static long EXTSIG = 0x08074b50L;   // "PK\007\008"
23      static long CENSIG = 0x02014b50L;   // "PK\001\002"
24      static long ENDSIG = 0x06054b50L;   // "PK\005\006"
25  
26      /*
27       * Header sizes in bytes (including signatures)
28       */
29      static final int LOCHDR = 30;   // LOC header size
30      static final int EXTHDR = 16;   // EXT header size
31      static final int CENHDR = 46;   // CEN header size
32      static final int ENDHDR = 22;   // END header size
33  
34      /*
35       * Local file (LOC) header field offsets
36       */
37      static final int LOCVER = 4;    // version needed to extract
38      static final int LOCFLG = 6;    // general purpose bit flag
39      static final int LOCHOW = 8;    // compression method
40      static final int LOCTIM = 10;   // modification time
41      static final int LOCCRC = 14;   // uncompressed file crc-32 value
42      static final int LOCSIZ = 18;   // compressed size
43      static final int LOCLEN = 22;   // uncompressed size
44      static final int LOCNAM = 26;   // filename length
45      static final int LOCEXT = 28;   // extra field length
46  
47      /*
48       * Extra local (EXT) header field offsets
49       */
50      static final int EXTCRC = 4;    // uncompressed file crc-32 value
51      static final int EXTSIZ = 8;    // compressed size
52      static final int EXTLEN = 12;   // uncompressed size
53  
54      /*
55       * Central directory (CEN) header field offsets
56       */
57      static final int CENVEM = 4;    // version made by
58      static final int CENVER = 6;    // version needed to extract
59      static final int CENFLG = 8;    // encrypt, decrypt flags
60      static final int CENHOW = 10;   // compression method
61      static final int CENTIM = 12;   // modification time
62      static final int CENCRC = 16;   // uncompressed file crc-32 value
63      static final int CENSIZ = 20;   // compressed size
64      static final int CENLEN = 24;   // uncompressed size
65      static final int CENNAM = 28;   // filename length
66      static final int CENEXT = 30;   // extra field length
67      static final int CENCOM = 32;   // comment length
68      static final int CENDSK = 34;   // disk number start
69      static final int CENATT = 36;   // internal file attributes
70      static final int CENATX = 38;   // external file attributes
71      static final int CENOFF = 42;   // LOC header offset
72  
73      /*
74       * End of central directory (END) header field offsets
75       */
76      static final int ENDSUB = 8;    // number of entries on this disk
77      static final int ENDTOT = 10;   // total number of entries
78      static final int ENDSIZ = 12;   // central directory size in bytes
79      static final int ENDOFF = 16;   // offset of first CEN header
80      static final int ENDCOM = 20;   // zip file comment length
81  }
82