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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.file.attribute.*; | ||
| 29 | import java.util.*; | ||
| 30 | import java.io.IOException; | ||
| 31 | |||
| 32 | /** | ||
| 33 | * Base implementation of BasicFileAttributeView | ||
| 34 | */ | ||
| 35 | |||
| 36 | abstract class AbstractBasicFileAttributeView | ||
| 37 | implements BasicFileAttributeView, DynamicFileAttributeView | ||
| 38 | { | ||
| 39 | private static final String SIZE_NAME = "size"; | ||
| 40 | private static final String CREATION_TIME_NAME = "creationTime"; | ||
| 41 | private static final String LAST_ACCESS_TIME_NAME = "lastAccessTime"; | ||
| 42 | private static final String LAST_MODIFIED_TIME_NAME = "lastModifiedTime"; | ||
| 43 | private static final String FILE_KEY_NAME = "fileKey"; | ||
| 44 | private static final String IS_DIRECTORY_NAME = "isDirectory"; | ||
| 45 | private static final String IS_REGULAR_FILE_NAME = "isRegularFile"; | ||
| 46 | private static final String IS_SYMBOLIC_LINK_NAME = "isSymbolicLink"; | ||
| 47 | private static final String IS_OTHER_NAME = "isOther"; | ||
| 48 | |||
| 49 | // the names of the basic attributes | ||
| 50 | static final Set<String> basicAttributeNames = | ||
| 51 | Util.newSet(SIZE_NAME, | ||
| 52 | CREATION_TIME_NAME, | ||
| 53 | LAST_ACCESS_TIME_NAME, | ||
| 54 | LAST_MODIFIED_TIME_NAME, | ||
| 55 | FILE_KEY_NAME, | ||
| 56 | IS_DIRECTORY_NAME, | ||
| 57 | IS_REGULAR_FILE_NAME, | ||
| 58 | IS_SYMBOLIC_LINK_NAME, | ||
| 59 | IS_OTHER_NAME); | ||
| 60 | |||
| 61 | protected AbstractBasicFileAttributeView() { } | ||
| 62 | |||
| 63 | @Override | ||
| 64 | public String name() { | ||
| 65 | return "basic"; | ||
| 66 | } | ||
| 67 | |||
| 68 | @Override | ||
| 69 | public void setAttribute(String attribute, Object value) | ||
| 70 | throws IOException | ||
| 71 | { | ||
| 72 | if (attribute.equals(LAST_MODIFIED_TIME_NAME)) { | ||
| 73 | setTimes((FileTime)value, null, null); | ||
| 74 | return; | ||
| 75 | } | ||
| 76 | if (attribute.equals(LAST_ACCESS_TIME_NAME)) { | ||
| 77 | setTimes(null, (FileTime)value, null); | ||
| 78 | return; | ||
| 79 | } | ||
| 80 | if (attribute.equals(CREATION_TIME_NAME)) { | ||
| 81 | setTimes(null, null, (FileTime)value); | ||
| 82 | return; | ||
| 83 | } | ||
| 84 | throw new IllegalArgumentException("'" + name() + ":" + | ||
| 85 | attribute + "' not recognized"); | ||
| 86 | } | ||
| 87 | |||
| 88 | /** | ||
| 89 | * Used to build a map of attribute name/values. | ||
| 90 | */ | ||
| 91 | static class AttributesBuilder { | ||
| 92 | private Set<String> names = new HashSet<>(); | ||
| 93 | private Map<String,Object> map = new HashMap<>(); | ||
| 94 | private boolean copyAll; | ||
| 95 | |||
| 96 | private AttributesBuilder(Set<String> allowed, String[] requested) { | ||
| 97 | for (String name: requested) { | ||
| 98 | if (name.equals("*")) { | ||
| 99 | copyAll = true; | ||
| 100 | } else { | ||
| 101 | if (!allowed.contains(name)) | ||
| 102 | throw new IllegalArgumentException("'" + name + "' not recognized"); | ||
| 103 | names.add(name); | ||
| 104 | } | ||
| 105 | } | ||
| 106 | } | ||
| 107 | |||
| 108 | /** | ||
| 109 | * Creates builder to build up a map of the matching attributes | ||
| 110 | */ | ||
| 111 | static AttributesBuilder create(Set<String> allowed, String[] requested) { | ||
| 112 | return new AttributesBuilder(allowed, requested); | ||
| 113 | } | ||
| 114 | |||
| 115 | /** | ||
| 116 | * Returns true if the attribute should be returned in the map | ||
| 117 | */ | ||
| 118 | boolean match(String name) { | ||
| 119 | return copyAll || names.contains(name); | ||
| 120 | } | ||
| 121 | |||
| 122 | void add(String name, Object value) { | ||
| 123 | map.put(name, value); | ||
| 124 | } | ||
| 125 | |||
| 126 | /** | ||
| 127 | * Returns the map. Discard all references to the AttributesBuilder | ||
| 128 | * after invoking this method. | ||
| 129 | */ | ||
| 130 | Map<String,Object> unmodifiableMap() { | ||
| 131 | return Collections.unmodifiableMap(map); | ||
| 132 | } | ||
| 133 | } | ||
| 134 | |||
| 135 | /** | ||
| 136 | * Invoked by readAttributes or sub-classes to add all matching basic | ||
| 137 | * attributes to the builder | ||
| 138 | */ | ||
| 139 | final void addRequestedBasicAttributes(BasicFileAttributes attrs, | ||
| 140 | AttributesBuilder builder) | ||
| 141 | { | ||
| 142 | if (builder.match(SIZE_NAME)) | ||
| 143 | builder.add(SIZE_NAME, attrs.size()); | ||
| 144 | if (builder.match(CREATION_TIME_NAME)) | ||
| 145 | builder.add(CREATION_TIME_NAME, attrs.creationTime()); | ||
| 146 | if (builder.match(LAST_ACCESS_TIME_NAME)) | ||
| 147 | builder.add(LAST_ACCESS_TIME_NAME, attrs.lastAccessTime()); | ||
| 148 | if (builder.match(LAST_MODIFIED_TIME_NAME)) | ||
| 149 | builder.add(LAST_MODIFIED_TIME_NAME, attrs.lastModifiedTime()); | ||
| 150 | if (builder.match(FILE_KEY_NAME)) | ||
| 151 | builder.add(FILE_KEY_NAME, attrs.fileKey()); | ||
| 152 | if (builder.match(IS_DIRECTORY_NAME)) | ||
| 153 | builder.add(IS_DIRECTORY_NAME, attrs.isDirectory()); | ||
| 154 | if (builder.match(IS_REGULAR_FILE_NAME)) | ||
| 155 | builder.add(IS_REGULAR_FILE_NAME, attrs.isRegularFile()); | ||
| 156 | if (builder.match(IS_SYMBOLIC_LINK_NAME)) | ||
| 157 | builder.add(IS_SYMBOLIC_LINK_NAME, attrs.isSymbolicLink()); | ||
| 158 | if (builder.match(IS_OTHER_NAME)) | ||
| 159 | builder.add(IS_OTHER_NAME, attrs.isOther()); | ||
| 160 | } | ||
| 161 | |||
| 162 | @Override | ||
| 163 | public Map<String,Object> readAttributes(String[] requested) | ||
| 164 | throws IOException | ||
| 165 | { | ||
| 166 | AttributesBuilder builder = | ||
| 167 | AttributesBuilder.create(basicAttributeNames, requested); | ||
| 168 | addRequestedBasicAttributes(readAttributes(), builder); | ||
| 169 | return builder.unmodifiableMap(); | ||
| 170 | } | ||
| 171 | } | ||