author | ohair |
Wed, 06 Apr 2011 22:06:11 -0700 | |
changeset 9035 | 1255eb81cc2f |
parent 8808 | fc799c458da8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.nio.fs; |
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import java.nio.file.attribute.*; |
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import java.util.*; |
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import java.io.IOException; |
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/** |
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* Base implementation of BasicFileAttributeView |
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*/ |
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abstract class AbstractBasicFileAttributeView |
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implements BasicFileAttributeView, DynamicFileAttributeView |
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{ |
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private static final String SIZE_NAME = "size"; |
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private static final String CREATION_TIME_NAME = "creationTime"; |
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private static final String LAST_ACCESS_TIME_NAME = "lastAccessTime"; |
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private static final String LAST_MODIFIED_TIME_NAME = "lastModifiedTime"; |
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private static final String FILE_KEY_NAME = "fileKey"; |
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private static final String IS_DIRECTORY_NAME = "isDirectory"; |
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private static final String IS_REGULAR_FILE_NAME = "isRegularFile"; |
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private static final String IS_SYMBOLIC_LINK_NAME = "isSymbolicLink"; |
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private static final String IS_OTHER_NAME = "isOther"; |
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// the names of the basic attributes |
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static final Set<String> basicAttributeNames = |
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Util.newSet(SIZE_NAME, |
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CREATION_TIME_NAME, |
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LAST_ACCESS_TIME_NAME, |
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LAST_MODIFIED_TIME_NAME, |
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FILE_KEY_NAME, |
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IS_DIRECTORY_NAME, |
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IS_REGULAR_FILE_NAME, |
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IS_SYMBOLIC_LINK_NAME, |
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IS_OTHER_NAME); |
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protected AbstractBasicFileAttributeView() { } |
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@Override |
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public String name() { |
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return "basic"; |
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} |
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@Override |
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public void setAttribute(String attribute, Object value) |
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throws IOException |
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{ |
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if (attribute.equals(LAST_MODIFIED_TIME_NAME)) { |
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setTimes((FileTime)value, null, null); |
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return; |
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} |
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if (attribute.equals(LAST_ACCESS_TIME_NAME)) { |
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setTimes(null, (FileTime)value, null); |
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return; |
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} |
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if (attribute.equals(CREATION_TIME_NAME)) { |
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setTimes(null, null, (FileTime)value); |
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return; |
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} |
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throw new IllegalArgumentException("'" + name() + ":" + |
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attribute + "' not recognized"); |
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} |
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/** |
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* Used to build a map of attribute name/values. |
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*/ |
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static class AttributesBuilder { |
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private Set<String> names = new HashSet<>(); |
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private Map<String,Object> map = new HashMap<>(); |
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private boolean copyAll; |
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private AttributesBuilder(Set<String> allowed, String[] requested) { |
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for (String name: requested) { |
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if (name.equals("*")) { |
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copyAll = true; |
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} else { |
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if (!allowed.contains(name)) |
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throw new IllegalArgumentException("'" + name + "' not recognized"); |
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names.add(name); |
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} |
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} |
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} |
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/** |
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* Creates builder to build up a map of the matching attributes |
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*/ |
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static AttributesBuilder create(Set<String> allowed, String[] requested) { |
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return new AttributesBuilder(allowed, requested); |
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} |
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/** |
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* Returns true if the attribute should be returned in the map |
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*/ |
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boolean match(String name) { |
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return copyAll || names.contains(name); |
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} |
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void add(String name, Object value) { |
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map.put(name, value); |
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} |
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/** |
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* Returns the map. Discard all references to the AttributesBuilder |
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* after invoking this method. |
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*/ |
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Map<String,Object> unmodifiableMap() { |
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return Collections.unmodifiableMap(map); |
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} |
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} |
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/** |
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* Invoked by readAttributes or sub-classes to add all matching basic |
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* attributes to the builder |
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*/ |
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final void addRequestedBasicAttributes(BasicFileAttributes attrs, |
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AttributesBuilder builder) |
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{ |
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if (builder.match(SIZE_NAME)) |
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builder.add(SIZE_NAME, attrs.size()); |
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if (builder.match(CREATION_TIME_NAME)) |
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builder.add(CREATION_TIME_NAME, attrs.creationTime()); |
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if (builder.match(LAST_ACCESS_TIME_NAME)) |
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builder.add(LAST_ACCESS_TIME_NAME, attrs.lastAccessTime()); |
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if (builder.match(LAST_MODIFIED_TIME_NAME)) |
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builder.add(LAST_MODIFIED_TIME_NAME, attrs.lastModifiedTime()); |
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if (builder.match(FILE_KEY_NAME)) |
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builder.add(FILE_KEY_NAME, attrs.fileKey()); |
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if (builder.match(IS_DIRECTORY_NAME)) |
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builder.add(IS_DIRECTORY_NAME, attrs.isDirectory()); |
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if (builder.match(IS_REGULAR_FILE_NAME)) |
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builder.add(IS_REGULAR_FILE_NAME, attrs.isRegularFile()); |
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if (builder.match(IS_SYMBOLIC_LINK_NAME)) |
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builder.add(IS_SYMBOLIC_LINK_NAME, attrs.isSymbolicLink()); |
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if (builder.match(IS_OTHER_NAME)) |
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builder.add(IS_OTHER_NAME, attrs.isOther()); |
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} |
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|
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@Override |
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public Map<String,Object> readAttributes(String[] requested) |
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throws IOException |
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{ |
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AttributesBuilder builder = |
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AttributesBuilder.create(basicAttributeNames, requested); |
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addRequestedBasicAttributes(readAttributes(), builder); |
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return builder.unmodifiableMap(); |
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} |
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} |