Showing the changes to java/pkg/sun/nio/fs/AbstractUserDefinedFileAttributeView.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2008, 2011, 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.nio.fs; | |
| 27 | + | |
| 28 | +import java.nio.ByteBuffer; | |
| 29 | +import java.nio.file.attribute.UserDefinedFileAttributeView; | |
| 30 | +import java.io.IOException; | |
| 31 | +import java.util.*; | |
| 32 | + | |
| 33 | +/** | |
| 34 | + * Base implementation of UserDefinedAttributeView | |
| 35 | + */ | |
| 36 | + | |
| 37 | +abstract class AbstractUserDefinedFileAttributeView | |
| 38 | + implements UserDefinedFileAttributeView, DynamicFileAttributeView | |
| 39 | +{ | |
| 40 | + protected AbstractUserDefinedFileAttributeView() { } | |
| 41 | + | |
| 42 | + protected void checkAccess(String file, | |
| 43 | + boolean checkRead, | |
| 44 | + boolean checkWrite) | |
| 45 | + { | |
| 46 | + assert checkRead || checkWrite; | |
| 47 | + SecurityManager sm = System.getSecurityManager(); | |
| 48 | + if (sm != null) { | |
| 49 | + if (checkRead) | |
| 50 | + sm.checkRead(file); | |
| 51 | + if (checkWrite) | |
| 52 | + sm.checkWrite(file); | |
| 53 | + sm.checkPermission(new RuntimePermission("accessUserDefinedAttributes")); | |
| 54 | + } | |
| 55 | + } | |
| 56 | + | |
| 57 | + @Override | |
| 58 | + public final String name() { | |
| 59 | + return "user"; | |
| 60 | + } | |
| 61 | + | |
| 62 | + @Override | |
| 63 | + public final void setAttribute(String attribute, Object value) | |
| 64 | + throws IOException | |
| 65 | + { | |
| 66 | + ByteBuffer bb; | |
| 67 | + if (value instanceof byte[]) { | |
| 68 | + bb = ByteBuffer.wrap((byte[])value); | |
| 69 | + } else { | |
| 70 | + bb = (ByteBuffer)value; | |
| 71 | + } | |
| 72 | + write(attribute, bb); | |
| 73 | + } | |
| 74 | + | |
| 75 | + @Override | |
| 76 | + public final Map<String,Object> readAttributes(String[] attributes) | |
| 77 | + throws IOException | |
| 78 | + { | |
| 79 | + // names of attributes to return | |
| 80 | + List<String> names = new ArrayList<>(); | |
| 81 | + for (String name: attributes) { | |
| 82 | + if (name.equals("*")) { | |
| 83 | + names = list(); | |
| 84 | + break; | |
| 85 | + } else { | |
| 86 | + if (name.length() == 0) | |
| 87 | + throw new IllegalArgumentException(); | |
| 88 | + names.add(name); | |
| 89 | + } | |
| 90 | + } | |
| 91 | + | |
| 92 | + // read each value and return in map | |
| 93 | + Map<String,Object> result = new HashMap<>(); | |
| 94 | + for (String name: names) { | |
| 95 | + int size = size(name); | |
| 96 | + byte[] buf = new byte[size]; | |
| 97 | + int n = read(name, ByteBuffer.wrap(buf)); | |
| 98 | + byte[] value = (n == size) ? buf : Arrays.copyOf(buf, n); | |
| 99 | + result.put(name, value); | |
| 100 | + } | |
| 101 | + return result; | |
| 102 | + } | |
| 103 | +} | |