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 | } | ||