| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.jimfs; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.ImmutableSet; |
| import java.io.IOException; |
| import java.nio.file.attribute.BasicFileAttributeView; |
| import java.nio.file.attribute.DosFileAttributeView; |
| import java.nio.file.attribute.DosFileAttributes; |
| import java.nio.file.attribute.FileAttributeView; |
| import java.nio.file.attribute.FileTime; |
| import java.util.Map; |
| import org.checkerframework.checker.nullness.compatqual.NullableDecl; |
| |
| /** |
| * Attribute provider that provides the {@link DosFileAttributeView} ("dos") and allows the reading |
| * of {@link DosFileAttributes}. |
| * |
| * @author Colin Decker |
| */ |
| final class DosAttributeProvider extends AttributeProvider { |
| |
| private static final ImmutableSet<String> ATTRIBUTES = |
| ImmutableSet.of("readonly", "hidden", "archive", "system"); |
| |
| private static final ImmutableSet<String> INHERITED_VIEWS = ImmutableSet.of("basic", "owner"); |
| |
| @Override |
| public String name() { |
| return "dos"; |
| } |
| |
| @Override |
| public ImmutableSet<String> inherits() { |
| return INHERITED_VIEWS; |
| } |
| |
| @Override |
| public ImmutableSet<String> fixedAttributes() { |
| return ATTRIBUTES; |
| } |
| |
| @Override |
| public ImmutableMap<String, ?> defaultValues(Map<String, ?> userProvidedDefaults) { |
| return ImmutableMap.of( |
| "dos:readonly", getDefaultValue("dos:readonly", userProvidedDefaults), |
| "dos:hidden", getDefaultValue("dos:hidden", userProvidedDefaults), |
| "dos:archive", getDefaultValue("dos:archive", userProvidedDefaults), |
| "dos:system", getDefaultValue("dos:system", userProvidedDefaults)); |
| } |
| |
| private static Boolean getDefaultValue(String attribute, Map<String, ?> userProvidedDefaults) { |
| Object userProvidedValue = userProvidedDefaults.get(attribute); |
| if (userProvidedValue != null) { |
| return checkType("dos", attribute, userProvidedValue, Boolean.class); |
| } |
| |
| return false; |
| } |
| |
| @NullableDecl |
| @Override |
| public Object get(File file, String attribute) { |
| if (ATTRIBUTES.contains(attribute)) { |
| return file.getAttribute("dos", attribute); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public void set(File file, String view, String attribute, Object value, boolean create) { |
| if (supports(attribute)) { |
| checkNotCreate(view, attribute, create); |
| file.setAttribute("dos", attribute, checkType(view, attribute, value, Boolean.class)); |
| } |
| } |
| |
| @Override |
| public Class<DosFileAttributeView> viewType() { |
| return DosFileAttributeView.class; |
| } |
| |
| @Override |
| public DosFileAttributeView view( |
| FileLookup lookup, ImmutableMap<String, FileAttributeView> inheritedViews) { |
| return new View(lookup, (BasicFileAttributeView) inheritedViews.get("basic")); |
| } |
| |
| @Override |
| public Class<DosFileAttributes> attributesType() { |
| return DosFileAttributes.class; |
| } |
| |
| @Override |
| public DosFileAttributes readAttributes(File file) { |
| return new Attributes(file); |
| } |
| |
| /** Implementation of {@link DosFileAttributeView}. */ |
| private static final class View extends AbstractAttributeView implements DosFileAttributeView { |
| |
| private final BasicFileAttributeView basicView; |
| |
| public View(FileLookup lookup, BasicFileAttributeView basicView) { |
| super(lookup); |
| this.basicView = checkNotNull(basicView); |
| } |
| |
| @Override |
| public String name() { |
| return "dos"; |
| } |
| |
| @Override |
| public DosFileAttributes readAttributes() throws IOException { |
| return new Attributes(lookupFile()); |
| } |
| |
| @Override |
| public void setTimes(FileTime lastModifiedTime, FileTime lastAccessTime, FileTime createTime) |
| throws IOException { |
| basicView.setTimes(lastModifiedTime, lastAccessTime, createTime); |
| } |
| |
| @Override |
| public void setReadOnly(boolean value) throws IOException { |
| lookupFile().setAttribute("dos", "readonly", value); |
| } |
| |
| @Override |
| public void setHidden(boolean value) throws IOException { |
| lookupFile().setAttribute("dos", "hidden", value); |
| } |
| |
| @Override |
| public void setSystem(boolean value) throws IOException { |
| lookupFile().setAttribute("dos", "system", value); |
| } |
| |
| @Override |
| public void setArchive(boolean value) throws IOException { |
| lookupFile().setAttribute("dos", "archive", value); |
| } |
| } |
| |
| /** Implementation of {@link DosFileAttributes}. */ |
| static class Attributes extends BasicAttributeProvider.Attributes implements DosFileAttributes { |
| |
| private final boolean readOnly; |
| private final boolean hidden; |
| private final boolean archive; |
| private final boolean system; |
| |
| protected Attributes(File file) { |
| super(file); |
| this.readOnly = (boolean) file.getAttribute("dos", "readonly"); |
| this.hidden = (boolean) file.getAttribute("dos", "hidden"); |
| this.archive = (boolean) file.getAttribute("dos", "archive"); |
| this.system = (boolean) file.getAttribute("dos", "system"); |
| } |
| |
| @Override |
| public boolean isReadOnly() { |
| return readOnly; |
| } |
| |
| @Override |
| public boolean isHidden() { |
| return hidden; |
| } |
| |
| @Override |
| public boolean isArchive() { |
| return archive; |
| } |
| |
| @Override |
| public boolean isSystem() { |
| return system; |
| } |
| } |
| } |