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