1e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera/* 2e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved. 3e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * 5e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * This code is free software; you can redistribute it and/or modify it 6e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * under the terms of the GNU General Public License version 2 only, as 7e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * published by the Free Software Foundation. Oracle designates this 8e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * particular file as subject to the "Classpath" exception as provided 9e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * by Oracle in the LICENSE file that accompanied this code. 10e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * 11e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * This code is distributed in the hope that it will be useful, but WITHOUT 12e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * version 2 for more details (a copy is included in the LICENSE file that 15e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * accompanied this code). 16e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * 17e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * You should have received a copy of the GNU General Public License version 18e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * 2 along with this work; if not, write to the Free Software Foundation, 19e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * 21e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * or visit www.oracle.com if you need additional information or have any 23e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * questions. 24e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 25e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 26e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmerapackage sun.nio.fs; 27e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 28e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmeraimport java.util.*; 29e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmeraimport java.nio.file.*; 30e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmeraimport java.nio.charset.Charset; 31e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmeraimport java.security.*; 32e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmeraimport sun.security.action.*; 33e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 34e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera/** 35e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Utility methods 36e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 37e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 38e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmeraclass Util { 39e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera private Util() { } 40e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 41e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera // private static final Charset jnuEncoding = Charset.forName( 42e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera // AccessController.doPrivileged(new GetPropertyAction("sun.jnu.encoding"))); 43e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera private static final Charset jnuEncoding = Charset.forName("UTF-8"); 44e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 45e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera /** 46e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Returns {@code Charset} corresponding to the sun.jnu.encoding property 47e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 48e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera static Charset jnuEncoding() { 49e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera return jnuEncoding; 50e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 51e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 52e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera /** 53e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Encodes the given String into a sequence of bytes using the {@code Charset} 54e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * specified by the sun.jnu.encoding property. 55e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 56e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera static byte[] toBytes(String s) { 57e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera return s.getBytes(jnuEncoding); 58e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 59e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 60e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera /** 61e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Constructs a new String by decoding the specified array of bytes using the 62e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * {@code Charset} specified by the sun.jnu.encoding property. 63e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 64e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera static String toString(byte[] bytes) { 65e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera return new String(bytes, jnuEncoding); 66e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 67e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 68e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 69e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera /** 70e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Splits a string around the given character. The array returned by this 71e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * method contains each substring that is terminated by the character. Use 72e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * for simple string spilting cases when needing to avoid loading regex. 73e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 74e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera static String[] split(String s, char c) { 75e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera int count = 0; 76e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera for (int i=0; i<s.length(); i++) { 77e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera if (s.charAt(i) == c) 78e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera count++; 79e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 80e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera String[] result = new String[count+1]; 81e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera int n = 0; 82e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera int last = 0; 83e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera for (int i=0; i<s.length(); i++) { 84e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera if (s.charAt(i) == c) { 85e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera result[n++] = s.substring(last, i); 86e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera last = i + 1; 87e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 88e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 89e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera result[n] = s.substring(last, s.length()); 90e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera return result; 91e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 92e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 93e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera /** 94e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Returns a Set containing the given elements. 95e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 96e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera @SafeVarargs 97e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera static <E> Set<E> newSet(E... elements) { 98e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera HashSet<E> set = new HashSet<>(); 99e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera for (E e: elements) { 100e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera set.add(e); 101e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 102e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera return set; 103e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 104e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 105e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera /** 106e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Returns a Set containing all the elements of the given Set plus 107e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * the given elements. 108e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 109e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera @SafeVarargs 110e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera static <E> Set<E> newSet(Set<E> other, E... elements) { 111e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera HashSet<E> set = new HashSet<>(other); 112e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera for (E e: elements) { 113e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera set.add(e); 114e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 115e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera return set; 116e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 117e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera 118e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera /** 119e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera * Returns {@code true} if symbolic links should be followed 120e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera */ 121e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera static boolean followLinks(LinkOption... options) { 122e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera boolean followLinks = true; 123e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera for (LinkOption option: options) { 124e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera if (option == LinkOption.NOFOLLOW_LINKS) { 125e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera followLinks = false; 126e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } else if (option == null) { 127e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera throw new NullPointerException(); 128e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } else { 129e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera throw new AssertionError("Should not get here"); 130e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 131e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 132e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera return followLinks; 133e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera } 134e6bac4bf9c85c2454ce22c91da6c654552c268e0Shubham Ajmera} 135