J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2003 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. |
| 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | @bug 4028605 4109069 4234207 4401122 |
| 26 | @summary Make sure ZipInputStream/InflaterInputStream.available() will |
| 27 | return 0 after EOF has reached and 1 otherwise. |
| 28 | */ |
| 29 | |
| 30 | |
| 31 | import java.io.*; |
| 32 | import java.util.zip.*; |
| 33 | |
| 34 | public class Available { |
| 35 | |
| 36 | public static void main(String[] args) throws Exception { |
| 37 | // 4028605 4109069 4234207 |
| 38 | test1(); |
| 39 | // test 4401122 |
| 40 | test2(); |
| 41 | } |
| 42 | |
| 43 | private static void test1() throws Exception { |
| 44 | File f = new File(System.getProperty("test.src", "."), "input.jar"); |
| 45 | |
| 46 | // test ZipInputStream |
| 47 | ZipInputStream z = new ZipInputStream(new FileInputStream(f)); |
| 48 | z.getNextEntry(); |
| 49 | tryAvail(z); |
| 50 | |
| 51 | // test InflaterInputStream |
| 52 | ZipFile zfile = new ZipFile(f); |
| 53 | tryAvail(zfile.getInputStream(zfile.getEntry("Available.java"))); |
| 54 | z.close(); |
| 55 | } |
| 56 | |
| 57 | static void tryAvail(InputStream in) throws Exception { |
| 58 | byte[] buf = new byte[1024]; |
| 59 | int n; |
| 60 | |
| 61 | while ((n = in.read(buf)) != -1); |
| 62 | if (in.available() != 0) { |
| 63 | throw new Exception("available should return 0 after EOF"); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | // To reproduce 4401122 |
| 68 | private static void test2() throws Exception { |
| 69 | File f = new File(System.getProperty("test.src", "."), "input.jar"); |
| 70 | ZipFile zf = new ZipFile(f); |
| 71 | InputStream in = zf.getInputStream(zf.getEntry("Available.java")); |
| 72 | |
| 73 | int initialAvailable = in.available(); |
| 74 | in.read(); |
| 75 | if (in.available() != initialAvailable - 1) |
| 76 | throw new RuntimeException("Available not decremented."); |
| 77 | for(int j=0; j<initialAvailable-1; j++) |
| 78 | in.read(); |
| 79 | if (in.available() != 0) |
| 80 | throw new RuntimeException(); |
| 81 | in.close(); |
| 82 | if (in.available() != 0) |
| 83 | throw new RuntimeException(); |
| 84 | } |
| 85 | |
| 86 | } |