1. /*

  2.  * @(#)ZipConstants.java	1.15 00/02/02

  3.  *

  4.  * Copyright 1995-2000 Sun Microsystems, Inc. All Rights Reserved.

  5.  * 

  6.  * This software is the proprietary information of Sun Microsystems, Inc.  

  7.  * Use is subject to license terms.

  8.  * 

  9.  */

  10. 

  11. package java.util.zip;

  12. 

  13. /*

  14.  * This interface defines the constants that are used by the classes

  15.  * which manipulate ZIP files.

  16.  *

  17.  * @version	1.15, 02/02/00

  18.  * @author	David Connelly

  19.  */

  20. interface ZipConstants {

  21.     /*

  22.      * Header signatures

  23.      */

  24.     static long LOCSIG = 0x04034b50L;	// "PK\003\004"

  25.     static long EXTSIG = 0x08074b50L;	// "PK\007\008"

  26.     static long CENSIG = 0x02014b50L;	// "PK\001\002"

  27.     static long ENDSIG = 0x06054b50L;	// "PK\005\006"

  28. 

  29.     /*

  30.      * Header sizes in bytes (including signatures)

  31.      */

  32.     static final int LOCHDR = 30;	// LOC header size

  33.     static final int EXTHDR = 16;	// EXT header size

  34.     static final int CENHDR = 46;	// CEN header size

  35.     static final int ENDHDR = 22;	// END header size

  36. 

  37.     /*

  38.      * Local file (LOC) header field offsets

  39.      */

  40.     static final int LOCVER = 4;	// version needed to extract

  41.     static final int LOCFLG = 6;	// general purpose bit flag

  42.     static final int LOCHOW = 8;	// compression method

  43.     static final int LOCTIM = 10;	// modification time

  44.     static final int LOCCRC = 14;	// uncompressed file crc-32 value

  45.     static final int LOCSIZ = 18;	// compressed size

  46.     static final int LOCLEN = 22;	// uncompressed size

  47.     static final int LOCNAM = 26;	// filename length

  48.     static final int LOCEXT = 28;	// extra field length

  49. 

  50.     /*

  51.      * Extra local (EXT) header field offsets

  52.      */

  53.     static final int EXTCRC = 4;	// uncompressed file crc-32 value

  54.     static final int EXTSIZ = 8;	// compressed size

  55.     static final int EXTLEN = 12;	// uncompressed size

  56. 

  57.     /*

  58.      * Central directory (CEN) header field offsets

  59.      */

  60.     static final int CENVEM = 4;	// version made by

  61.     static final int CENVER = 6;	// version needed to extract

  62.     static final int CENFLG = 8;	// encrypt, decrypt flags

  63.     static final int CENHOW = 10;	// compression method

  64.     static final int CENTIM = 12;	// modification time

  65.     static final int CENCRC = 16;	// uncompressed file crc-32 value

  66.     static final int CENSIZ = 20;	// compressed size

  67.     static final int CENLEN = 24;	// uncompressed size

  68.     static final int CENNAM = 28;	// filename length

  69.     static final int CENEXT = 30;	// extra field length

  70.     static final int CENCOM = 32;	// comment length

  71.     static final int CENDSK = 34;	// disk number start

  72.     static final int CENATT = 36;	// internal file attributes

  73.     static final int CENATX = 38;	// external file attributes

  74.     static final int CENOFF = 42;	// LOC header offset

  75. 

  76.     /*

  77.      * End of central directory (END) header field offsets

  78.      */

  79.     static final int ENDSUB = 8;	// number of entries on this disk

  80.     static final int ENDTOT = 10;	// total number of entries

  81.     static final int ENDSIZ = 12;	// central directory size in bytes

  82.     static final int ENDOFF = 16;	// offset of first CEN header

  83.     static final int ENDCOM = 20;	// zip file comment length

  84. }