Showing the changes to java/pkg/sun/nio/fs/AbstractBasicFileAttributeView.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.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 | +} | |