1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/* Copyright (C) 1999 Free Software Foundation
This file is part of libgcj.
This software is copyrighted work licensed under the terms of the
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
details. */
package java.util.zip;
/**
* @author Per Bothner
* @date January 6, 1999.
*/
/*
* Written using on-line Java Platform 1.2 API Specification, as well
* as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
* Status: Believed complete and correct.
*/
public class ZipEntry implements ZipConstants
{
// These values were determined using a simple test program.
public static final int STORED = 0;
public static final int DEFLATED = 8;
String comment;
long compressedSize = -1;
long crc = -1;
byte[] extra;
int method = -1;
String name;
long size = -1;
long time = -1;
long relativeOffset = -1;
ZipEntry next;
public ZipEntry (String name)
{
if (name == null)
throw new NullPointerException ();
if (name.length() > 65535)
throw new IllegalArgumentException ();
this.name = name;
}
public ZipEntry (ZipEntry ent)
{
comment = ent.comment;
compressedSize = ent.compressedSize;
crc = ent.crc;
extra = ent.extra;
method = ent.method;
size = ent.size;
time = ent.time;
relativeOffset = ent.relativeOffset;
}
public String getComment () { return comment; }
public long getCompressedSize () { return compressedSize; }
public long getCrc () { return crc; }
public byte[] getExtra() { return extra; }
public int getMethod () { return method; }
public String getName () { return name; }
public long getSize () { return size; }
public long getTime () { return time; }
public boolean isDirectory ()
{
if (name != null)
{
int nlen = name.length();
if (nlen > 0 && name.charAt(nlen-1) == '/')
return true;
}
return false;
}
public void setComment (String comment)
{
if (comment != null && comment.length() > 65535)
throw new IllegalArgumentException ();
this.comment = comment;
}
public void setCrc (long crc)
{
if (crc < 0 || crc > 0xffffffffL)
throw new IllegalArgumentException ();
this.crc = crc;
}
public void setExtra (byte[] extra)
{
if (extra != null && extra.length > 65535)
throw new IllegalArgumentException ();
this.extra = extra;
}
public void setMethod (int method)
{
if (method != DEFLATED && method != STORED)
throw new IllegalArgumentException ();
this.method = method;
}
public void setSize (long size)
{
if (size < 0 || size > 0xffffffffL)
throw new IllegalArgumentException ();
this.size = size;
}
public void setTime (long time)
{
this.time = time;
}
private final static short[] daysToMonthStart = {
//Jan Feb Mar Apr May Jun Jul
0, 31, 31+28, 2*31+28, 2*31+28+30, 3*31+28+30, 3*31+28+2*30,
// Aug Sep Oct Nov Dec
4*31+28+2*30, 5*31+28+2*30, 5*31+28+3*30, 6*31+28+3*30, 6*31+28+4*30};
/** Convert a DOS-style type value to milliseconds since 1970. */
static long timeFromDOS (int date, int time)
{
int sec = 2 * (time & 0x1f);
int min = (time >> 5) & 0x3f;
int hrs = (time >> 11) & 0x1f;
int day = date & 0x1f;
int mon = ((date >> 5) & 0xf) - 1;
int year = ((date >> 9) & 0x7f) + 10; /* Since 1970. */
// Guard against invalid or missing date causing IndexOutOfBoundsException.
if (mon < 0 || mon > 11)
return -1;
long mtime = (((hrs * 60) + min) * 60 + sec) * 1000;
// Leap year calculations are rather trivial in this case ...
int days = 365 * year + ((year+1)>>2);
days += daysToMonthStart[mon];
if ((year & 3) == 0 && mon > 1)
days++;
days += day;
return (days * 24*60*60L + ((hrs * 60) + min) * 60 + sec) * 1000L;
}
public String toString () { return name; }
}
|
