1 /*
2 * Copyright 1995-1996 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package java.util.zip;
27
28 /*
29 * This interface defines the constants that are used by the classes
30 * which manipulate ZIP files.
31 *
32 * @author David Connelly
33 */
34 interface ZipConstants {
35 /*
36 * Header signatures
37 */
38 static long LOCSIG = 0x04034b50L; // "PK\003\004"
39 static long EXTSIG = 0x08074b50L; // "PK\007\008"
40 static long CENSIG = 0x02014b50L; // "PK\001\002"
41 static long ENDSIG = 0x06054b50L; // "PK\005\006"
42
43 /*
44 * Header sizes in bytes (including signatures)
45 */
46 static final int LOCHDR = 30; // LOC header size
47 static final int EXTHDR = 16; // EXT header size
48 static final int CENHDR = 46; // CEN header size
49 static final int ENDHDR = 22; // END header size
50
51 /*
52 * Local file (LOC) header field offsets
53 */
54 static final int LOCVER = 4; // version needed to extract
55 static final int LOCFLG = 6; // general purpose bit flag
56 static final int LOCHOW = 8; // compression method
57 static final int LOCTIM = 10; // modification time
58 static final int LOCCRC = 14; // uncompressed file crc-32 value
59 static final int LOCSIZ = 18; // compressed size
60 static final int LOCLEN = 22; // uncompressed size
61 static final int LOCNAM = 26; // filename length
62 static final int LOCEXT = 28; // extra field length
63
64 /*
65 * Extra local (EXT) header field offsets
66 */
67 static final int EXTCRC = 4; // uncompressed file crc-32 value
68 static final int EXTSIZ = 8; // compressed size
69 static final int EXTLEN = 12; // uncompressed size
70
71 /*
72 * Central directory (CEN) header field offsets
73 */
74 static final int CENVEM = 4; // version made by
75 static final int CENVER = 6; // version needed to extract
76 static final int CENFLG = 8; // encrypt, decrypt flags
77 static final int CENHOW = 10; // compression method
78 static final int CENTIM = 12; // modification time
79 static final int CENCRC = 16; // uncompressed file crc-32 value
80 static final int CENSIZ = 20; // compressed size
81 static final int CENLEN = 24; // uncompressed size
82 static final int CENNAM = 28; // filename length
83 static final int CENEXT = 30; // extra field length
84 static final int CENCOM = 32; // comment length
85 static final int CENDSK = 34; // disk number start
86 static final int CENATT = 36; // internal file attributes
87 static final int CENATX = 38; // external file attributes
88 static final int CENOFF = 42; // LOC header offset
89
90 /*
91 * End of central directory (END) header field offsets
92 */
93 static final int ENDSUB = 8; // number of entries on this disk
94 static final int ENDTOT = 10; // total number of entries
95 static final int ENDSIZ = 12; // central directory size in bytes
96 static final int ENDOFF = 16; // offset of first CEN header
97 static final int ENDCOM = 20; // zip file comment length
98 }
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