1 /*

     2  * Copyright 2009 Sun Microsystems, Inc.  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.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any 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 }