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
|
/*
* Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.*;
import java.nio.*;
import java.util.*;
import java.util.zip.*;
public class LargeZipFile {
// If true, don't delete large ZIP file created for test.
static final boolean debug = System.getProperty("debug") != null;
static final int DATA_LEN = 1024 * 1024;
static final int DATA_SIZE = 8;
static long fileSize = 3L * 1024L * 1024L * 1024L; // 3GB
static boolean userFile = false;
static byte[] data;
static File largeFile;
static String lastEntryName;
/* args can be empty, in which case check a 3 GB file which is created for
* this test (and then deleted). Or it can be a number, in which case
* that designates the size of the file that's created for this test (and
* then deleted). Or it can be the name of a file to use for the test, in
* which case it is *not* deleted. Note that in this last case, the data
* comparison might fail.
*/
static void realMain (String[] args) throws Throwable {
if (args.length > 0) {
try {
fileSize = Long.parseLong(args[0]);
System.out.println("Testing with file of size " + fileSize);
} catch (NumberFormatException ex) {
largeFile = new File(args[0]);
if (!largeFile.exists()) {
throw new Exception("Specified file " + args[0] + " does not exist");
}
userFile = true;
System.out.println("Testing with user-provided file " + largeFile);
}
}
File testDir = null;
if (largeFile == null) {
testDir = new File(System.getProperty("test.scratch", "."),
"LargeZip");
if (testDir.exists()) {
if (!testDir.delete()) {
throw new Exception("Cannot delete already-existing test directory");
}
}
check(!testDir.exists() && testDir.mkdirs());
largeFile = new File(testDir, "largezip.zip");
createLargeZip();
}
readLargeZip();
if (!userFile && !debug) {
check(largeFile.delete());
check(testDir.delete());
}
}
static void createLargeZip() throws Throwable {
int iterations = DATA_LEN / DATA_SIZE;
ByteBuffer bb = ByteBuffer.allocate(DATA_SIZE);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
for (int i = 0; i < iterations; i++) {
bb.putDouble(0, Math.random());
baos.write(bb.array(), 0, DATA_SIZE);
}
data = baos.toByteArray();
try (FileOutputStream fos = new FileOutputStream(largeFile);
BufferedOutputStream bos = new BufferedOutputStream(fos);
ZipOutputStream zos = new ZipOutputStream(bos))
{
long length = 0;
while (length < fileSize) {
ZipEntry ze = new ZipEntry("entry-" + length);
lastEntryName = ze.getName();
zos.putNextEntry(ze);
zos.write(data, 0, data.length);
zos.closeEntry();
length = largeFile.length();
}
System.out.println("Last entry written is " + lastEntryName);
}
}
static void readLargeZip() throws Throwable {
try (ZipFile zipFile = new ZipFile(largeFile)) {
ZipEntry entry = null;
String entryName = null;
int count = 0;
Enumeration<? extends ZipEntry> entries = zipFile.entries();
while (entries.hasMoreElements()) {
entry = entries.nextElement();
entryName = entry.getName();
count++;
}
System.out.println("Number of entries read: " + count);
System.out.println("Last entry read is " + entryName);
check(!entry.isDirectory());
if (check(entryName.equals(lastEntryName))) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream is = zipFile.getInputStream(entry);
byte buf[] = new byte[4096];
int len;
while ((len = is.read(buf)) >= 0) {
baos.write(buf, 0, len);
}
baos.close();
is.close();
check(Arrays.equals(data, baos.toByteArray()));
}
}
}
//--------------------- Infrastructure ---------------------------
static volatile int passed = 0, failed = 0;
static void pass() {passed++;}
static void pass(String msg) {System.out.println(msg); passed++;}
static void fail() {failed++; Thread.dumpStack();}
static void fail(String msg) {System.out.println(msg); fail();}
static void unexpected(Throwable t) {failed++; t.printStackTrace();}
static void unexpected(Throwable t, String msg) {
System.out.println(msg); failed++; t.printStackTrace();}
static boolean check(boolean cond) {if (cond) pass(); else fail(); return cond;}
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else fail(x + " not equal to " + y);}
public static void main(String[] args) throws Throwable {
try {realMain(args);} catch (Throwable t) {unexpected(t);}
System.out.println("\nPassed = " + passed + " failed = " + failed);
if (failed > 0) throw new AssertionError("Some tests failed");}
}
|
