1/* 2 * Copyright (c) 2014, 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 24import java.io.IOException; 25import java.io.OutputStream; 26import java.nio.file.*; 27import java.util.Random; 28import java.util.jar.JarEntry; 29import java.util.jar.JarOutputStream; 30 31/** 32 * Utility class for zipfs tests. 33 */ 34 35class Utils { 36 private Utils() { } 37 38 /** 39 * Creates a JAR file of the given name with 0 or more named entries. 40 * 41 * @return Path to the newly created JAR file 42 */ 43 static Path createJarFile(String name, String... entries) throws IOException { 44 Path jarFile = Paths.get("basic.jar"); 45 Random rand = new Random(); 46 try (OutputStream out = Files.newOutputStream(jarFile); 47 JarOutputStream jout = new JarOutputStream(out)) { 48 int len = 100; 49 for (String entry: entries) { 50 JarEntry je = new JarEntry(entry); 51 jout.putNextEntry(je); 52 byte[] bytes = new byte[len]; 53 rand.nextBytes(bytes); 54 jout.write(bytes); 55 jout.closeEntry(); 56 len += 1024; 57 } 58 } 59 return jarFile; 60 } 61} 62