czipconstants.java

对eclipse gef进行封装,可以生成图形化编辑器

/*******************************************************************************
 * $Header: /cvsroot/EOS6/work_dir/niegy/com.primeton.studio.gef.ui/src/com/primeton/studio/gef/ui/zip/CZipConstants.java,v 1.1 2007/01/23 06:35:15 niegy Exp $
 * $Revision: 1.1 $
 * $Date: 2007/01/23 06:35:15 $
 *
 *==============================================================================
 *
 * Copyright (c) 2001-2006 Primeton Technologies, Ltd.
 * All rights reserved.
 * 
 * Created on 2007-1-22
 *******************************************************************************/


package com.primeton.studio.gef.ui.zip;

/**
 * TODO 此处填写 class 信息
 *
 * @author niegy (mailto:[e-mail])
 */
/*
 * 修改历史
 * $Log: CZipConstants.java,v $
 * Revision 1.1  2007/01/23 06:35:15  niegy
 * 实现压缩功能，支持中文
 * 
 */
interface CZipConstants {
	  /*
     * Header signatures
     */
    static long LOCSIG = 0x04034b50L;	// "PK\003\004"
    static long EXTSIG = 0x08074b50L;	// "PK\007\008"
    static long CENSIG = 0x02014b50L;	// "PK\001\002"
    static long ENDSIG = 0x06054b50L;	// "PK\005\006"

    /*
     * Header sizes in bytes (including signatures)
     */
    static final int LOCHDR = 30;	// LOC header size
    static final int EXTHDR = 16;	// EXT header size
    static final int CENHDR = 46;	// CEN header size
    static final int ENDHDR = 22;	// END header size

    /*
     * Local file (LOC) header field offsets
     */
    static final int LOCVER = 4;	// version needed to extract
    static final int LOCFLG = 6;	// general purpose bit flag
    static final int LOCHOW = 8;	// compression method
    static final int LOCTIM = 10;	// modification time
    static final int LOCCRC = 14;	// uncompressed file crc-32 value
    static final int LOCSIZ = 18;	// compressed size
    static final int LOCLEN = 22;	// uncompressed size
    static final int LOCNAM = 26;	// filename length
    static final int LOCEXT = 28;	// extra field length

    /*
     * Extra local (EXT) header field offsets
     */
    static final int EXTCRC = 4;	// uncompressed file crc-32 value
    static final int EXTSIZ = 8;	// compressed size
    static final int EXTLEN = 12;	// uncompressed size

    /*
     * Central directory (CEN) header field offsets
     */
    static final int CENVEM = 4;	// version made by
    static final int CENVER = 6;	// version needed to extract
    static final int CENFLG = 8;	// encrypt, decrypt flags
    static final int CENHOW = 10;	// compression method
    static final int CENTIM = 12;	// modification time
    static final int CENCRC = 16;	// uncompressed file crc-32 value
    static final int CENSIZ = 20;	// compressed size
    static final int CENLEN = 24;	// uncompressed size
    static final int CENNAM = 28;	// filename length
    static final int CENEXT = 30;	// extra field length
    static final int CENCOM = 32;	// comment length
    static final int CENDSK = 34;	// disk number start
    static final int CENATT = 36;	// internal file attributes
    static final int CENATX = 38;	// external file attributes
    static final int CENOFF = 42;	// LOC header offset

    /*
     * End of central directory (END) header field offsets
     */
    static final int ENDSUB = 8;	// number of entries on this disk
    static final int ENDTOT = 10;	// total number of entries
    static final int ENDSIZ = 12;	// central directory size in bytes
    static final int ENDOFF = 16;	// offset of first CEN header
    static final int ENDCOM = 20;	// zip file comment length
}