| /* |
| * Copyright (c) 2009, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.nio.zipfs; |
| |
| import java.io.IOException; |
| import java.nio.file.FileStore; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.attribute.BasicFileAttributeView; |
| import java.nio.file.attribute.FileAttributeView; |
| import java.nio.file.attribute.FileStoreAttributeView; |
| |
| /** |
| * @author Xueming Shen, Rajendra Gutupalli, Jaya Hangal |
| */ |
| class ZipFileStore extends FileStore { |
| |
| private final ZipFileSystem zfs; |
| |
| ZipFileStore(ZipPath zpath) { |
| this.zfs = zpath.getFileSystem(); |
| } |
| |
| @Override |
| public String name() { |
| return zfs.toString() + "/"; |
| } |
| |
| @Override |
| public String type() { |
| return "zipfs"; |
| } |
| |
| @Override |
| public boolean isReadOnly() { |
| return zfs.isReadOnly(); |
| } |
| |
| @Override |
| public boolean supportsFileAttributeView(Class<? extends FileAttributeView> type) { |
| return (type == BasicFileAttributeView.class || |
| type == ZipFileAttributeView.class); |
| } |
| |
| @Override |
| public boolean supportsFileAttributeView(String name) { |
| return name.equals("basic") || name.equals("zip"); |
| } |
| |
| @Override |
| public <V extends FileStoreAttributeView> V getFileStoreAttributeView(Class<V> type) { |
| if (type == null) |
| throw new NullPointerException(); |
| return (V)null; |
| } |
| |
| @Override |
| public long getTotalSpace() throws IOException { |
| return new ZipFileStoreAttributes(this).totalSpace(); |
| } |
| |
| @Override |
| public long getUsableSpace() throws IOException { |
| return new ZipFileStoreAttributes(this).usableSpace(); |
| } |
| |
| @Override |
| public long getUnallocatedSpace() throws IOException { |
| return new ZipFileStoreAttributes(this).unallocatedSpace(); |
| } |
| |
| @Override |
| public Object getAttribute(String attribute) throws IOException { |
| if (attribute.equals("totalSpace")) |
| return getTotalSpace(); |
| if (attribute.equals("usableSpace")) |
| return getUsableSpace(); |
| if (attribute.equals("unallocatedSpace")) |
| return getUnallocatedSpace(); |
| throw new UnsupportedOperationException("does not support the given attribute"); |
| } |
| |
| private static class ZipFileStoreAttributes { |
| final FileStore fstore; |
| final long size; |
| |
| public ZipFileStoreAttributes(ZipFileStore fileStore) |
| throws IOException |
| { |
| Path path = FileSystems.getDefault().getPath(fileStore.name()); |
| this.size = Files.size(path); |
| this.fstore = Files.getFileStore(path); |
| } |
| |
| public long totalSpace() { |
| return size; |
| } |
| |
| public long usableSpace() throws IOException { |
| if (!fstore.isReadOnly()) |
| return fstore.getUsableSpace(); |
| return 0; |
| } |
| |
| public long unallocatedSpace() throws IOException { |
| if (!fstore.isReadOnly()) |
| return fstore.getUnallocatedSpace(); |
| return 0; |
| } |
| } |
| } |