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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 import java.io.*; 27 import java.nio.*; 28 import java.util.*; 29 import java.util.zip.*; 30 31 public class LargeZip { 32 // If true, don't delete large ZIP file created for test. 33 static final boolean debug = System.getProperty("debug") != null; 34 35 //static final int DATA_LEN = 1024 * 1024; 36 static final int DATA_LEN = 80 * 1024; 37 static final int DATA_SIZE = 8; 38 39 static long fileSize = 6L * 1024L * 1024L * 1024L; // 6GB 40 41 static boolean userFile = false; 42 43 static byte[] data; 44 static File largeFile; 45 static String lastEntryName; 46 47 /* args can be empty, in which case check a 3 GB file which is created for 48 * this test (and then deleted). Or it can be a number, in which case 49 * that designates the size of the file that's created for this test (and 50 * then deleted). Or it can be the name of a file to use for the test, in 51 * which case it is *not* deleted. Note that in this last case, the data 52 * comparison might fail. 53 */ 54 static void realMain (String[] args) throws Throwable { 55 if (args.length > 0) { 56 try { 57 fileSize = Long.parseLong(args[0]); 58 System.out.println("Testing with file of size " + fileSize); 59 } catch (NumberFormatException ex) { 60 largeFile = new File(args[0]); 61 if (!largeFile.exists()) { 62 throw new Exception("Specified file " + args[0] + " does not exist"); 63 } 64 userFile = true; 65 System.out.println("Testing with user-provided file " + largeFile); 66 } 67 } 68 File testDir = null; 69 if (largeFile == null) { 70 testDir = new File(System.getProperty("test.scratch", "."), 71 "LargeZip"); 72 if (testDir.exists()) { 73 if (!testDir.delete()) { 74 throw new Exception("Cannot delete already-existing test directory"); 75 } 76 } 77 check(!testDir.exists() && testDir.mkdirs()); 78 largeFile = new File(testDir, "largezip.zip"); 79 createLargeZip(); 80 } 81 82 readLargeZip1(); 83 readLargeZip2(); 84 85 if (!userFile && !debug) { 86 check(largeFile.delete()); 87 check(testDir.delete()); 88 } 89 } 90 91 static void createLargeZip() throws Throwable { 92 int iterations = DATA_LEN / DATA_SIZE; 93 ByteBuffer bb = ByteBuffer.allocate(DATA_SIZE); 94 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 95 for (int i = 0; i < iterations; i++) { 96 bb.putDouble(0, Math.random()); 97 baos.write(bb.array(), 0, DATA_SIZE); 98 } 99 data = baos.toByteArray(); 100 101 ZipOutputStream zos = new ZipOutputStream( 102 new BufferedOutputStream(new FileOutputStream(largeFile))); 103 long length = 0; 104 while (length < fileSize) { 105 ZipEntry ze = new ZipEntry("entry-" + length); 106 lastEntryName = ze.getName(); 107 zos.putNextEntry(ze); 108 zos.write(data, 0, data.length); 109 zos.closeEntry(); 110 length = largeFile.length(); 111 } 112 System.out.println("Last entry written is " + lastEntryName); 113 zos.close(); 114 } 115 116 static void readLargeZip1() throws Throwable { 117 ZipFile zipFile = new ZipFile(largeFile); 118 ZipEntry entry = null; 119 String entryName = null; 120 int count = 0; 121 Enumeration<? extends ZipEntry> entries = zipFile.entries(); 122 while (entries.hasMoreElements()) { 123 entry = entries.nextElement(); 124 entryName = entry.getName(); 125 count++; 126 } 127 System.out.println("Number of entries read: " + count); 128 System.out.println("Last entry read is " + entryName); 129 check(!entry.isDirectory()); 130 if (check(entryName.equals(lastEntryName))) { 131 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 132 InputStream is = zipFile.getInputStream(entry); 133 byte buf[] = new byte[4096]; 134 int len; 135 while ((len = is.read(buf)) >= 0) { 136 baos.write(buf, 0, len); 137 } 138 baos.close(); 139 is.close(); 140 check(Arrays.equals(data, baos.toByteArray())); 141 } 142 } 143 144 145 static void readLargeZip2() throws Throwable { 146 ZipInputStream zis = new ZipInputStream( 147 new BufferedInputStream(new FileInputStream(largeFile))); 148 ZipEntry entry = null; 149 String entryName = null; 150 int count = 0; 151 while ((entry = zis.getNextEntry()) != null) { 152 entryName = entry.getName(); 153 if (entryName.equals(lastEntryName)) { 154 break; 155 } 156 count++; 157 } 158 System.out.println("Number of entries read: " + count); 159 System.out.println("Last entry read is " + entryName); 160 check(!entry.isDirectory()); 161 162 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 163 164 byte buf[] = new byte[4096]; 165 int len; 166 while ((len = zis.read(buf)) >= 0) { 167 baos.write(buf, 0, len); 168 } 169 baos.close(); 170 check(Arrays.equals(data, baos.toByteArray())); 171 check(zis.getNextEntry() == null); 172 zis.close(); 173 } 174 175 176 //--------------------- Infrastructure --------------------------- 177 static volatile int passed = 0, failed = 0; 178 static void pass() {passed++;} 179 static void pass(String msg) {System.out.println(msg); passed++;} 180 static void fail() {failed++; Thread.dumpStack();} 181 static void fail(String msg) {System.out.println(msg); fail();} 182 static void unexpected(Throwable t) {failed++; t.printStackTrace();} 183 static void unexpected(Throwable t, String msg) { 184 System.out.println(msg); failed++; t.printStackTrace();} 185 static boolean check(boolean cond) {if (cond) pass(); else fail(); return cond;} 186 static void equal(Object x, Object y) { 187 if (x == null ? y == null : x.equals(y)) pass(); 188 else fail(x + " not equal to " + y);} 189 public static void main(String[] args) throws Throwable { 190 try {realMain(args);} catch (Throwable t) {unexpected(t);} 191 System.out.println("\nPassed = " + passed + " failed = " + failed); 192 if (failed > 0) throw new AssertionError("Some tests failed");} 193 }