1 /*
2 * Copyright (c) 2009, 2017, 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 jdk.nio.zipfs;
27
28 import java.io.*;
29 import java.net.URI;
30 import java.nio.channels.*;
31 import java.nio.file.*;
32 import java.nio.file.DirectoryStream.Filter;
33 import java.nio.file.attribute.*;
34 import java.util.*;
35 import static java.nio.charset.StandardCharsets.UTF_8;
36 import static java.nio.file.StandardOpenOption.*;
37 import static java.nio.file.StandardCopyOption.*;
38
39 /**
40 *
41 * @author Xueming Shen, Rajendra Gutupalli,Jaya Hangal
42 */
43
44 final class ZipPath implements Path {
45
46 private final ZipFileSystem zfs;
47 private final byte[] path;
48 private volatile int[] offsets;
49 private int hashcode = 0; // cached hashcode (created lazily)
50
51 ZipPath(ZipFileSystem zfs, byte[] path) {
52 this(zfs, path, false);
53 }
54
55 ZipPath(ZipFileSystem zfs, byte[] path, boolean normalized) {
56 this.zfs = zfs;
57 if (normalized) {
58 this.path = path;
59 } else {
60 if (zfs.zc.isUTF8()) {
61 this.path = normalize(path);
62 } else { // see normalize(String);
63 this.path = normalize(zfs.getString(path));
505 int len = path.length();
506 if (len == 0)
507 return new byte[0];
508 char prevC = 0;
509 for (int i = 0; i < len; i++) {
510 char c = path.charAt(i);
511 if (c == '\\' || c == '\u0000')
512 return normalize(path, i, len);
513 if (c == '/' && prevC == '/')
514 return normalize(path, i - 1, len);
515 prevC = c;
516 }
517 if (len > 1 && prevC == '/')
518 path = path.substring(0, len - 1);
519 return zfs.getBytes(path);
520 }
521
522 private byte[] normalize(String path, int off, int len) {
523 StringBuilder to = new StringBuilder(len);
524 to.append(path, 0, off);
525 int m = off;
526 char prevC = 0;
527 while (off < len) {
528 char c = path.charAt(off++);
529 if (c == '\\')
530 c = '/';
531 if (c == '/' && prevC == '/')
532 continue;
533 if (c == '\u0000')
534 throw new InvalidPathException(path,
535 "Path: nul character not allowed");
536 to.append(c);
537 prevC = c;
538 }
539 len = to.length();
540 if (len > 1 && prevC == '/')
541 to.delete(len -1, len);
542 return zfs.getBytes(to.toString());
543 }
544
545 // Remove DotSlash(./) and resolve DotDot (..) components
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1 /*
2 * Copyright (c) 2009, 2018, 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 jdk.nio.zipfs;
27
28 import static java.nio.charset.StandardCharsets.UTF_8;
29 import static java.nio.file.StandardCopyOption.COPY_ATTRIBUTES;
30 import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
31 import static java.nio.file.StandardOpenOption.CREATE;
32 import static java.nio.file.StandardOpenOption.READ;
33 import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
34 import static java.nio.file.StandardOpenOption.WRITE;
35
36 import java.io.File;
37 import java.io.IOException;
38 import java.io.InputStream;
39 import java.io.OutputStream;
40 import java.net.URI;
41 import java.nio.channels.FileChannel;
42 import java.nio.channels.SeekableByteChannel;
43 import java.nio.file.AccessDeniedException;
44 import java.nio.file.AccessMode;
45 import java.nio.file.CopyOption;
46 import java.nio.file.DirectoryNotEmptyException;
47 import java.nio.file.DirectoryStream;
48 import java.nio.file.DirectoryStream.Filter;
49 import java.nio.file.FileAlreadyExistsException;
50 import java.nio.file.FileStore;
51 import java.nio.file.Files;
52 import java.nio.file.InvalidPathException;
53 import java.nio.file.LinkOption;
54 import java.nio.file.NoSuchFileException;
55 import java.nio.file.OpenOption;
56 import java.nio.file.Path;
57 import java.nio.file.ProviderMismatchException;
58 import java.nio.file.ReadOnlyFileSystemException;
59 import java.nio.file.WatchEvent;
60 import java.nio.file.WatchKey;
61 import java.nio.file.WatchService;
62 import java.nio.file.attribute.BasicFileAttributeView;
63 import java.nio.file.attribute.FileAttribute;
64 import java.nio.file.attribute.FileTime;
65 import java.util.Arrays;
66 import java.util.Iterator;
67 import java.util.Map;
68 import java.util.NoSuchElementException;
69 import java.util.Objects;
70 import java.util.Set;
71
72 /**
73 * @author Xueming Shen, Rajendra Gutupalli,Jaya Hangal
74 */
75 final class ZipPath implements Path {
76
77 private final ZipFileSystem zfs;
78 private final byte[] path;
79 private volatile int[] offsets;
80 private int hashcode = 0; // cached hashcode (created lazily)
81
82 ZipPath(ZipFileSystem zfs, byte[] path) {
83 this(zfs, path, false);
84 }
85
86 ZipPath(ZipFileSystem zfs, byte[] path, boolean normalized) {
87 this.zfs = zfs;
88 if (normalized) {
89 this.path = path;
90 } else {
91 if (zfs.zc.isUTF8()) {
92 this.path = normalize(path);
93 } else { // see normalize(String);
94 this.path = normalize(zfs.getString(path));
536 int len = path.length();
537 if (len == 0)
538 return new byte[0];
539 char prevC = 0;
540 for (int i = 0; i < len; i++) {
541 char c = path.charAt(i);
542 if (c == '\\' || c == '\u0000')
543 return normalize(path, i, len);
544 if (c == '/' && prevC == '/')
545 return normalize(path, i - 1, len);
546 prevC = c;
547 }
548 if (len > 1 && prevC == '/')
549 path = path.substring(0, len - 1);
550 return zfs.getBytes(path);
551 }
552
553 private byte[] normalize(String path, int off, int len) {
554 StringBuilder to = new StringBuilder(len);
555 to.append(path, 0, off);
556 char prevC = 0;
557 while (off < len) {
558 char c = path.charAt(off++);
559 if (c == '\\')
560 c = '/';
561 if (c == '/' && prevC == '/')
562 continue;
563 if (c == '\u0000')
564 throw new InvalidPathException(path,
565 "Path: nul character not allowed");
566 to.append(c);
567 prevC = c;
568 }
569 len = to.length();
570 if (len > 1 && prevC == '/')
571 to.delete(len -1, len);
572 return zfs.getBytes(to.toString());
573 }
574
575 // Remove DotSlash(./) and resolve DotDot (..) components
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