1 /* 2 * Copyright (c) 1998, 2003, 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 /* @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 try (ZipInputStream z = new ZipInputStream(new FileInputStream(f))) { 48 z.getNextEntry(); 49 tryAvail(z); 50 } 51 52 // test InflaterInputStream 53 ZipFile zfile = new ZipFile(f); 54 tryAvail(zfile.getInputStream(zfile.getEntry("Available.java"))); 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 }