1 /*
2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 import java.io.*;
25 import java.nio.*;
26 import java.util.*;
27 import java.util.zip.*;
28
29 public class LargeZipFile {
30 // If true, don't delete large ZIP file created for test.
31 static final boolean debug = System.getProperty("debug") != null;
32
33 static final int DATA_LEN = 1024 * 1024;
34 static final int DATA_SIZE = 8;
35
36 static long fileSize = 3L * 1024L * 1024L * 1024L; // 3GB
37
38 static boolean userFile = false;
39
40 static byte[] data;
41 static File largeFile;
42 static String lastEntryName;
43
44 /* args can be empty, in which case check a 3 GB file which is created for
45 * this test (and then deleted). Or it can be a number, in which case
46 * that designates the size of the file that's created for this test (and
47 * then deleted). Or it can be the name of a file to use for the test, in
48 * which case it is *not* deleted. Note that in this last case, the data
49 * comparison might fail.
50 */
51 static void realMain (String[] args) throws Throwable {
52 if (args.length > 0) {
53 try {
54 fileSize = Long.parseLong(args[0]);
55 System.out.println("Testing with file of size " + fileSize);
56 } catch (NumberFormatException ex) {
57 largeFile = new File(args[0]);
58 if (!largeFile.exists()) {
59 throw new Exception("Specified file " + args[0] + " does not exist");
60 }
61 userFile = true;
62 System.out.println("Testing with user-provided file " + largeFile);
63 }
64 }
65 File testDir = null;
66 if (largeFile == null) {
67 testDir = new File(System.getProperty("test.scratch", "."),
68 "LargeZip");
69 if (testDir.exists()) {
70 if (!testDir.delete()) {
71 throw new Exception("Cannot delete already-existing test directory");
72 }
73 }
74 check(!testDir.exists() && testDir.mkdirs());
75 largeFile = new File(testDir, "largezip.zip");
76 createLargeZip();
77 }
78
79 readLargeZip();
80
81 if (!userFile && !debug) {
82 check(largeFile.delete());
83 check(testDir.delete());
84 }
85 }
86
87 static void createLargeZip() throws Throwable {
88 int iterations = DATA_LEN / DATA_SIZE;
89 ByteBuffer bb = ByteBuffer.allocate(DATA_SIZE);
90 ByteArrayOutputStream baos = new ByteArrayOutputStream();
91 for (int i = 0; i < iterations; i++) {
92 bb.putDouble(0, Math.random());
93 baos.write(bb.array(), 0, DATA_SIZE);
94 }
95 data = baos.toByteArray();
96 try (FileOutputStream fos = new FileOutputStream(largeFile);
97 BufferedOutputStream bos = new BufferedOutputStream(fos);
98 ZipOutputStream zos = new ZipOutputStream(bos))
99 {
100 long length = 0;
101 while (length < fileSize) {
102 ZipEntry ze = new ZipEntry("entry-" + length);
103 lastEntryName = ze.getName();
104 zos.putNextEntry(ze);
105 zos.write(data, 0, data.length);
106 zos.closeEntry();
107 length = largeFile.length();
108 }
109 System.out.println("Last entry written is " + lastEntryName);
110 }
111 }
112
113 static void readLargeZip() throws Throwable {
114 try (ZipFile zipFile = new ZipFile(largeFile)) {
115 ZipEntry entry = null;
116 String entryName = null;
117 int count = 0;
118 Enumeration<? extends ZipEntry> entries = zipFile.entries();
119 while (entries.hasMoreElements()) {
120 entry = entries.nextElement();
121 entryName = entry.getName();
122 count++;
123 }
124 System.out.println("Number of entries read: " + count);
125 System.out.println("Last entry read is " + entryName);
126 check(!entry.isDirectory());
127 if (check(entryName.equals(lastEntryName))) {
128 ByteArrayOutputStream baos = new ByteArrayOutputStream();
129 InputStream is = zipFile.getInputStream(entry);
130 byte buf[] = new byte[4096];
131 int len;
132 while ((len = is.read(buf)) >= 0) {
133 baos.write(buf, 0, len);
134 }
135 baos.close();
136 is.close();
137 check(Arrays.equals(data, baos.toByteArray()));
138 }
139 }
140 }
141
142 //--------------------- Infrastructure ---------------------------
143 static volatile int passed = 0, failed = 0;
144 static void pass() {passed++;}
145 static void pass(String msg) {System.out.println(msg); passed++;}
146 static void fail() {failed++; Thread.dumpStack();}
147 static void fail(String msg) {System.out.println(msg); fail();}
148 static void unexpected(Throwable t) {failed++; t.printStackTrace();}
149 static void unexpected(Throwable t, String msg) {
150 System.out.println(msg); failed++; t.printStackTrace();}
151 static boolean check(boolean cond) {if (cond) pass(); else fail(); return cond;}
152 static void equal(Object x, Object y) {
153 if (x == null ? y == null : x.equals(y)) pass();
154 else fail(x + " not equal to " + y);}
155 public static void main(String[] args) throws Throwable {
156 try {realMain(args);} catch (Throwable t) {unexpected(t);}
157 System.out.println("\nPassed = " + passed + " failed = " + failed);
158 if (failed > 0) throw new AssertionError("Some tests failed");}
159 }