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
|
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 java.io.File;
29 import java.io.IOException;
30 import java.io.InputStream;
31 import java.io.OutputStream;
32 import java.net.URI;
33 import java.nio.channels.FileChannel;
34 import java.nio.channels.SeekableByteChannel;
35 import java.nio.file.*;
36 import java.nio.file.DirectoryStream.Filter;
37 import java.nio.file.attribute.BasicFileAttributeView;
38 import java.nio.file.attribute.FileAttribute;
39 import java.nio.file.attribute.FileTime;
40 import java.util.Arrays;
41 import java.util.Iterator;
42 import java.util.Map;
43 import java.util.NoSuchElementException;
44 import java.util.Objects;
45 import java.util.Set;
46
47 import static java.nio.charset.StandardCharsets.UTF_8;
48 import static java.nio.file.StandardCopyOption.COPY_ATTRIBUTES;
49 import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
50 import static java.nio.file.StandardOpenOption.CREATE;
51 import static java.nio.file.StandardOpenOption.READ;
52 import static java.nio.file.StandardOpenOption.TRUNCATE_EXISTING;
53 import static java.nio.file.StandardOpenOption.WRITE;
54
55 /**
56 * @author Xueming Shen, Rajendra Gutupalli,Jaya Hangal
57 */
58 final class ZipPath implements Path {
59
60 private final ZipFileSystem zfs;
61 private final byte[] path;
62 private volatile int[] offsets;
63 private int hashcode = 0; // cached hashcode (created lazily)
64
65 ZipPath(ZipFileSystem zfs, byte[] path) {
66 this(zfs, path, false);
67 }
68
69 ZipPath(ZipFileSystem zfs, byte[] path, boolean normalized) {
70 this.zfs = zfs;
71 if (normalized) {
72 this.path = path;
73 } else {
74 if (zfs.zc.isUTF8()) {
75 this.path = normalize(path);
76 } else { // see normalize(String);
77 this.path = normalize(zfs.getString(path));
519 int len = path.length();
520 if (len == 0)
521 return new byte[0];
522 char prevC = 0;
523 for (int i = 0; i < len; i++) {
524 char c = path.charAt(i);
525 if (c == '\\' || c == '\u0000')
526 return normalize(path, i, len);
527 if (c == '/' && prevC == '/')
528 return normalize(path, i - 1, len);
529 prevC = c;
530 }
531 if (len > 1 && prevC == '/')
532 path = path.substring(0, len - 1);
533 return zfs.getBytes(path);
534 }
535
536 private byte[] normalize(String path, int off, int len) {
537 StringBuilder to = new StringBuilder(len);
538 to.append(path, 0, off);
539 char prevC = 0;
540 while (off < len) {
541 char c = path.charAt(off++);
542 if (c == '\\')
543 c = '/';
544 if (c == '/' && prevC == '/')
545 continue;
546 if (c == '\u0000')
547 throw new InvalidPathException(path,
548 "Path: nul character not allowed");
549 to.append(c);
550 prevC = c;
551 }
552 len = to.length();
553 if (len > 1 && prevC == '/')
554 to.delete(len -1, len);
555 return zfs.getBytes(to.toString());
556 }
557
558 // Remove DotSlash(./) and resolve DotDot (..) components
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