ZipConstants.cs


1:	// ZipConstants.cs
2:	// Copyright (C) 2001 Mike Krueger
3:	//
4:	// This file was translated from java, it was part of the GNU Classpath
5:	// Copyright (C) 2001 Free Software Foundation, Inc.
6:	//
7:	// This program is free software; you can redistribute it and/or
8:	// modify it under the terms of the GNU General Public License
9:	// as published by the Free Software Foundation; either version 2
10:	// of the License, or (at your option) any later version.
11:	//
12:	// This program is distributed in the hope that it will be useful,
13:	// but WITHOUT ANY WARRANTY; without even the implied warranty of
14:	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15:	// GNU General Public License for more details.
16:	//
17:	// You should have received a copy of the GNU General Public License
18:	// along with this program; if not, write to the Free Software
19:	// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20:	//
21:	// Linking this library statically or dynamically with other modules is
22:	// making a combined work based on this library. Thus, the terms and
23:	// conditions of the GNU General Public License cover the whole
24:	// combination.
25:	//
26:	// As a special exception, the copyright holders of this library give you
27:	// permission to link this library with independent modules to produce an
28:	// executable, regardless of the license terms of these independent
29:	// modules, and to copy and distribute the resulting executable under
30:	// terms of your choice, provided that you also meet, for each linked
31:	// independent module, the terms and conditions of the license of that
32:	// module. An independent module is a module which is not derived from
33:	// or based on this library. If you modify this library, you may extend
34:	// this exception to your version of the library, but you are not
35:	// obligated to do so. If you do not wish to do so, delete this
36:	// exception statement from your version.
37:
38:	using System.Text;
39:
40:	namespace ICSharpCode.SharpZipLib.Zip {
41:
42:	/// <summary>
43:	/// This class contains constants used for zip.
44:	/// </summary>
45:	public sealed class ZipConstants
46:	{
47:	/* The local file header */
48:	public const int LOCHDR = 30;
49:	public const int LOCSIG = 'P' \| ('K' << 8) \| (3 << 16) \| (4 << 24);
50:
51:	public const int LOCVER = 4;
52:	public const int LOCFLG = 6;
53:	public const int LOCHOW = 8;
54:	public const int LOCTIM = 10;
55:	public const int LOCCRC = 14;
56:	public const int LOCSIZ = 18;
57:	public const int LOCLEN = 22;
58:	public const int LOCNAM = 26;
59:	public const int LOCEXT = 28;
60:
61:	/* The Data descriptor */
62:	public const int EXTSIG = 'P' \| ('K' << 8) \| (7 << 16) \| (8 << 24);
63:	public const int EXTHDR = 16;
64:
65:	public const int EXTCRC = 4;
66:	public const int EXTSIZ = 8;
67:	public const int EXTLEN = 12;
68:
69:	/* The central directory file header */
70:	public const int CENSIG = 'P' \| ('K' << 8) \| (1 << 16) \| (2 << 24);
71:
72:	/* The central directory file header for 64bit ZIP*/
73:	public const int CENSIG64 = 0x06064b50;
74:
75:	public const int CENHDR = 46;
76:
77:	public const int CENVEM = 4;
78:	public const int CENVER = 6;
79:	public const int CENFLG = 8;
80:	public const int CENHOW = 10;
81:	public const int CENTIM = 12;
82:	public const int CENCRC = 16;
83:	public const int CENSIZ = 20;
84:	public const int CENLEN = 24;
85:	public const int CENNAM = 28;
86:	public const int CENEXT = 30;
87:	public const int CENCOM = 32;
88:	public const int CENDSK = 34;
89:	public const int CENATT = 36;
90:	public const int CENATX = 38;
91:	public const int CENOFF = 42;
92:
93:	/* The entries in the end of central directory */
94:	public const int ENDSIG = 'P' \| ('K' << 8) \| (5 << 16) \| (6 << 24);
95:	public const int ENDHDR = 22;
96:
97:	/* The following two fields are missing in SUN JDK */
98:	public const int ENDNRD = 4;
99:	public const int ENDDCD = 6;
100:
101:	public const int ENDSUB = 8;
102:	public const int ENDTOT = 10;
103:	public const int ENDSIZ = 12;
104:	public const int ENDOFF = 16;
105:	public const int ENDCOM = 20;
106:
107:	/* Using the codepage 1252 doesn't solve the 8bit ASCII problem :/
108:	any help would be appreciated.
109:
110:	// get encoding for latin characters (like ö, ü, ß or ô)
111:	static Encoding ecp1252 = Encoding.GetEncoding(1252);
112:	*/
113:	public static string ConvertToString(byte[] data)
114:	{
115:
116:	return Encoding.ASCII.GetString(data);
117:	}
118:
119:	public static byte[] ConvertToArray(string str)
120:	{
121:	return Encoding.ASCII.GetBytes(str);
122:	}
123:	}
124:	}