| /* |
| * Copyright (c) 2009, 2017, 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.*; |
| import java.net.URI; |
| import java.nio.channels.*; |
| import java.nio.file.*; |
| import java.nio.file.DirectoryStream.Filter; |
| import java.nio.file.attribute.*; |
| import java.util.*; |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static java.nio.file.StandardOpenOption.*; |
| import static java.nio.file.StandardCopyOption.*; |
| |
| /** |
| * |
| * @author Xueming Shen, Rajendra Gutupalli,Jaya Hangal |
| */ |
| |
| final class ZipPath implements Path { |
| |
| private final ZipFileSystem zfs; |
| private final byte[] path; |
| private volatile int[] offsets; |
| private int hashcode = 0; // cached hashcode (created lazily) |
| |
| ZipPath(ZipFileSystem zfs, byte[] path) { |
| this(zfs, path, false); |
| } |
| |
| ZipPath(ZipFileSystem zfs, byte[] path, boolean normalized) { |
| this.zfs = zfs; |
| if (normalized) { |
| this.path = path; |
| } else { |
| if (zfs.zc.isUTF8()) { |
| this.path = normalize(path); |
| } else { // see normalize(String); |
| this.path = normalize(zfs.getString(path)); |
| } |
| } |
| } |
| |
| ZipPath(ZipFileSystem zfs, String path) { |
| this.zfs = zfs; |
| this.path = normalize(path); |
| } |
| |
| @Override |
| public ZipPath getRoot() { |
| if (this.isAbsolute()) |
| return zfs.getRootDir(); |
| else |
| return null; |
| } |
| |
| @Override |
| public Path getFileName() { |
| int off = path.length; |
| if (off == 0 || off == 1 && path[0] == '/') |
| return null; |
| while (--off >= 0 && path[off] != '/') {} |
| if (off < 0) |
| return this; |
| off++; |
| byte[] result = new byte[path.length - off]; |
| System.arraycopy(path, off, result, 0, result.length); |
| return new ZipPath(getFileSystem(), result, true); |
| } |
| |
| @Override |
| public ZipPath getParent() { |
| int off = path.length; |
| if (off == 0 || off == 1 && path[0] == '/') |
| return null; |
| while (--off >= 0 && path[off] != '/') {} |
| if (off <= 0) |
| return getRoot(); |
| byte[] result = new byte[off]; |
| System.arraycopy(path, 0, result, 0, off); |
| return new ZipPath(getFileSystem(), result, true); |
| } |
| |
| @Override |
| public int getNameCount() { |
| initOffsets(); |
| return offsets.length; |
| } |
| |
| @Override |
| public ZipPath getName(int index) { |
| initOffsets(); |
| if (index < 0 || index >= offsets.length) |
| throw new IllegalArgumentException(); |
| int begin = offsets[index]; |
| int len; |
| if (index == (offsets.length-1)) |
| len = path.length - begin; |
| else |
| len = offsets[index+1] - begin - 1; |
| // construct result |
| byte[] result = new byte[len]; |
| System.arraycopy(path, begin, result, 0, len); |
| return new ZipPath(zfs, result); |
| } |
| |
| @Override |
| public ZipPath subpath(int beginIndex, int endIndex) { |
| initOffsets(); |
| if (beginIndex < 0 || |
| beginIndex >= offsets.length || |
| endIndex > offsets.length || |
| beginIndex >= endIndex) |
| throw new IllegalArgumentException(); |
| |
| // starting offset and length |
| int begin = offsets[beginIndex]; |
| int len; |
| if (endIndex == offsets.length) |
| len = path.length - begin; |
| else |
| len = offsets[endIndex] - begin - 1; |
| // construct result |
| byte[] result = new byte[len]; |
| System.arraycopy(path, begin, result, 0, len); |
| return new ZipPath(zfs, result); |
| } |
| |
| @Override |
| public ZipPath toRealPath(LinkOption... options) throws IOException { |
| ZipPath realPath; |
| byte[] resolved = getResolvedPath(); |
| // resolved is always absolute and normalized |
| if (resolved == path) { |
| realPath = this; |
| } else { |
| realPath = new ZipPath(zfs, resolved, true); |
| realPath.resolved = resolved; |
| } |
| realPath.checkAccess(); |
| return realPath; |
| } |
| |
| boolean isHidden() { |
| return false; |
| } |
| |
| @Override |
| public ZipPath toAbsolutePath() { |
| if (isAbsolute()) { |
| return this; |
| } else { |
| // add '/' before the existing path |
| byte[] tmp = new byte[path.length + 1]; |
| System.arraycopy(path, 0, tmp, 1, path.length); |
| tmp[0] = '/'; |
| return new ZipPath(zfs, tmp, true); // normalized |
| } |
| } |
| |
| @Override |
| public URI toUri() { |
| try { |
| return new URI("jar", |
| decodeUri(zfs.getZipFile().toUri().toString()) + |
| "!" + |
| zfs.getString(toAbsolutePath().path), |
| null); |
| } catch (Exception ex) { |
| throw new AssertionError(ex); |
| } |
| } |
| |
| private boolean equalsNameAt(ZipPath other, int index) { |
| int mbegin = offsets[index]; |
| int mlen = 0; |
| if (index == (offsets.length-1)) |
| mlen = path.length - mbegin; |
| else |
| mlen = offsets[index + 1] - mbegin - 1; |
| int obegin = other.offsets[index]; |
| int olen = 0; |
| if (index == (other.offsets.length - 1)) |
| olen = other.path.length - obegin; |
| else |
| olen = other.offsets[index + 1] - obegin - 1; |
| if (mlen != olen) |
| return false; |
| int n = 0; |
| while(n < mlen) { |
| if (path[mbegin + n] != other.path[obegin + n]) |
| return false; |
| n++; |
| } |
| return true; |
| } |
| |
| @Override |
| public Path relativize(Path other) { |
| final ZipPath o = checkPath(other); |
| if (o.equals(this)) |
| return new ZipPath(zfs, new byte[0], true); |
| if (this.path.length == 0) |
| return o; |
| if (this.zfs != o.zfs || this.isAbsolute() != o.isAbsolute()) |
| throw new IllegalArgumentException(); |
| if (this.path.length == 1 && this.path[0] == '/') |
| return new ZipPath(zfs, |
| Arrays.copyOfRange(o.path, 1, o.path.length), |
| true); |
| int mc = this.getNameCount(); |
| int oc = o.getNameCount(); |
| int n = Math.min(mc, oc); |
| int i = 0; |
| while (i < n) { |
| if (!equalsNameAt(o, i)) |
| break; |
| i++; |
| } |
| int dotdots = mc - i; |
| int len = dotdots * 3 - 1; |
| if (i < oc) |
| len += (o.path.length - o.offsets[i] + 1); |
| byte[] result = new byte[len]; |
| |
| int pos = 0; |
| while (dotdots > 0) { |
| result[pos++] = (byte)'.'; |
| result[pos++] = (byte)'.'; |
| if (pos < len) // no tailing slash at the end |
| result[pos++] = (byte)'/'; |
| dotdots--; |
| } |
| if (i < oc) |
| System.arraycopy(o.path, o.offsets[i], |
| result, pos, |
| o.path.length - o.offsets[i]); |
| return new ZipPath(zfs, result); |
| } |
| |
| @Override |
| public ZipFileSystem getFileSystem() { |
| return zfs; |
| } |
| |
| @Override |
| public boolean isAbsolute() { |
| return path.length > 0 && path[0] == '/'; |
| } |
| |
| @Override |
| public ZipPath resolve(Path other) { |
| ZipPath o = checkPath(other); |
| if (o.path.length == 0) |
| return this; |
| if (o.isAbsolute() || this.path.length == 0) |
| return o; |
| return resolve(o.path); |
| } |
| |
| // opath is normalized, just concat |
| private ZipPath resolve(byte[] opath) { |
| byte[] resolved = null; |
| byte[] tpath = this.path; |
| int tlen = tpath.length; |
| int olen = opath.length; |
| if (path[tlen - 1] == '/') { |
| resolved = new byte[tlen + olen]; |
| System.arraycopy(tpath, 0, resolved, 0, tlen); |
| System.arraycopy(opath, 0, resolved, tlen, olen); |
| } else { |
| resolved = new byte[tlen + 1 + olen]; |
| System.arraycopy(tpath, 0, resolved, 0, tlen); |
| resolved[tlen] = '/'; |
| System.arraycopy(opath, 0, resolved, tlen + 1, olen); |
| } |
| return new ZipPath(zfs, resolved, true); |
| } |
| |
| @Override |
| public Path resolveSibling(Path other) { |
| Objects.requireNonNull(other, "other"); |
| Path parent = getParent(); |
| return (parent == null) ? other : parent.resolve(other); |
| } |
| |
| @Override |
| public boolean startsWith(Path other) { |
| final ZipPath o = checkPath(other); |
| if (o.isAbsolute() != this.isAbsolute() || |
| o.path.length > this.path.length) |
| return false; |
| int olast = o.path.length; |
| for (int i = 0; i < olast; i++) { |
| if (o.path[i] != this.path[i]) |
| return false; |
| } |
| olast--; |
| return o.path.length == this.path.length || |
| o.path[olast] == '/' || |
| this.path[olast + 1] == '/'; |
| } |
| |
| @Override |
| public boolean endsWith(Path other) { |
| final ZipPath o = checkPath(other); |
| int olast = o.path.length - 1; |
| if (olast > 0 && o.path[olast] == '/') |
| olast--; |
| int last = this.path.length - 1; |
| if (last > 0 && this.path[last] == '/') |
| last--; |
| if (olast == -1) // o.path.length == 0 |
| return last == -1; |
| if ((o.isAbsolute() &&(!this.isAbsolute() || olast != last)) || |
| (last < olast)) |
| return false; |
| for (; olast >= 0; olast--, last--) { |
| if (o.path[olast] != this.path[last]) |
| return false; |
| } |
| return o.path[olast + 1] == '/' || |
| last == -1 || this.path[last] == '/'; |
| } |
| |
| @Override |
| public ZipPath resolve(String other) { |
| byte[] opath = normalize(other); |
| if (opath.length == 0) |
| return this; |
| if (opath[0] == '/' || this.path.length == 0) |
| return new ZipPath(zfs, opath, true); |
| return resolve(opath); |
| } |
| |
| @Override |
| public final Path resolveSibling(String other) { |
| return resolveSibling(zfs.getPath(other)); |
| } |
| |
| @Override |
| public final boolean startsWith(String other) { |
| return startsWith(zfs.getPath(other)); |
| } |
| |
| @Override |
| public final boolean endsWith(String other) { |
| return endsWith(zfs.getPath(other)); |
| } |
| |
| @Override |
| public Path normalize() { |
| byte[] resolved = getResolved(); |
| if (resolved == path) // no change |
| return this; |
| return new ZipPath(zfs, resolved, true); |
| } |
| |
| private ZipPath checkPath(Path path) { |
| Objects.requireNonNull(path, "path"); |
| if (!(path instanceof ZipPath)) |
| throw new ProviderMismatchException(); |
| return (ZipPath) path; |
| } |
| |
| // create offset list if not already created |
| private void initOffsets() { |
| if (offsets == null) { |
| int count, index; |
| // count names |
| count = 0; |
| index = 0; |
| if (path.length == 0) { |
| // empty path has one name |
| count = 1; |
| } else { |
| while (index < path.length) { |
| byte c = path[index++]; |
| if (c != '/') { |
| count++; |
| while (index < path.length && path[index] != '/') |
| index++; |
| } |
| } |
| } |
| // populate offsets |
| int[] result = new int[count]; |
| count = 0; |
| index = 0; |
| while (index < path.length) { |
| byte c = path[index]; |
| if (c == '/') { |
| index++; |
| } else { |
| result[count++] = index++; |
| while (index < path.length && path[index] != '/') |
| index++; |
| } |
| } |
| synchronized (this) { |
| if (offsets == null) |
| offsets = result; |
| } |
| } |
| } |
| |
| // resolved path for locating zip entry inside the zip file, |
| // the result path does not contain ./ and .. components |
| private volatile byte[] resolved = null; |
| byte[] getResolvedPath() { |
| byte[] r = resolved; |
| if (r == null) { |
| if (isAbsolute()) |
| r = getResolved(); |
| else |
| r = toAbsolutePath().getResolvedPath(); |
| resolved = r; |
| } |
| return resolved; |
| } |
| |
| // removes redundant slashs, replace "\" to zip separator "/" |
| // and check for invalid characters |
| private byte[] normalize(byte[] path) { |
| int len = path.length; |
| if (len == 0) |
| return path; |
| byte prevC = 0; |
| for (int i = 0; i < len; i++) { |
| byte c = path[i]; |
| if (c == '\\' || c == '\u0000') |
| return normalize(path, i); |
| if (c == (byte)'/' && prevC == '/') |
| return normalize(path, i - 1); |
| prevC = c; |
| } |
| if (len > 1 && prevC == '/') { |
| return Arrays.copyOf(path, len - 1); |
| } |
| return path; |
| } |
| |
| private byte[] normalize(byte[] path, int off) { |
| byte[] to = new byte[path.length]; |
| int n = 0; |
| while (n < off) { |
| to[n] = path[n]; |
| n++; |
| } |
| int m = n; |
| byte prevC = 0; |
| while (n < path.length) { |
| byte c = path[n++]; |
| if (c == (byte)'\\') |
| c = (byte)'/'; |
| if (c == (byte)'/' && prevC == (byte)'/') |
| continue; |
| if (c == '\u0000') |
| throw new InvalidPathException(zfs.getString(path), |
| "Path: nul character not allowed"); |
| to[m++] = c; |
| prevC = c; |
| } |
| if (m > 1 && to[m - 1] == '/') |
| m--; |
| return (m == to.length)? to : Arrays.copyOf(to, m); |
| } |
| |
| // if zfs is NOT in utf8, normalize the path as "String" |
| // to avoid incorrectly normalizing byte '0x5c' (as '\') |
| // to '/'. |
| private byte[] normalize(String path) { |
| if (zfs.zc.isUTF8()) |
| return normalize(zfs.getBytes(path)); |
| int len = path.length(); |
| if (len == 0) |
| return new byte[0]; |
| char prevC = 0; |
| for (int i = 0; i < len; i++) { |
| char c = path.charAt(i); |
| if (c == '\\' || c == '\u0000') |
| return normalize(path, i, len); |
| if (c == '/' && prevC == '/') |
| return normalize(path, i - 1, len); |
| prevC = c; |
| } |
| if (len > 1 && prevC == '/') |
| path = path.substring(0, len - 1); |
| return zfs.getBytes(path); |
| } |
| |
| private byte[] normalize(String path, int off, int len) { |
| StringBuilder to = new StringBuilder(len); |
| to.append(path, 0, off); |
| int m = off; |
| char prevC = 0; |
| while (off < len) { |
| char c = path.charAt(off++); |
| if (c == '\\') |
| c = '/'; |
| if (c == '/' && prevC == '/') |
| continue; |
| if (c == '\u0000') |
| throw new InvalidPathException(path, |
| "Path: nul character not allowed"); |
| to.append(c); |
| prevC = c; |
| } |
| len = to.length(); |
| if (len > 1 && prevC == '/') |
| to.delete(len -1, len); |
| return zfs.getBytes(to.toString()); |
| } |
| |
| // Remove DotSlash(./) and resolve DotDot (..) components |
| private byte[] getResolved() { |
| for (int i = 0; i < path.length; i++) { |
| if (path[i] == (byte)'.' && |
| (i + 1 == path.length || path[i + 1] == '/')) { |
| return resolve0(); |
| } |
| } |
| return path; |
| } |
| |
| // TBD: performance, avoid initOffsets |
| private byte[] resolve0() { |
| byte[] to = new byte[path.length]; |
| int nc = getNameCount(); |
| int[] lastM = new int[nc]; |
| int lastMOff = -1; |
| int m = 0; |
| for (int i = 0; i < nc; i++) { |
| int n = offsets[i]; |
| int len = (i == offsets.length - 1)? |
| (path.length - n):(offsets[i + 1] - n - 1); |
| if (len == 1 && path[n] == (byte)'.') { |
| if (m == 0 && path[0] == '/') // absolute path |
| to[m++] = '/'; |
| continue; |
| } |
| if (len == 2 && path[n] == '.' && path[n + 1] == '.') { |
| if (lastMOff >= 0) { |
| m = lastM[lastMOff--]; // retreat |
| continue; |
| } |
| if (path[0] == '/') { // "/../xyz" skip |
| if (m == 0) |
| to[m++] = '/'; |
| } else { // "../xyz" -> "../xyz" |
| if (m != 0 && to[m-1] != '/') |
| to[m++] = '/'; |
| while (len-- > 0) |
| to[m++] = path[n++]; |
| } |
| continue; |
| } |
| if (m == 0 && path[0] == '/' || // absolute path |
| m != 0 && to[m-1] != '/') { // not the first name |
| to[m++] = '/'; |
| } |
| lastM[++lastMOff] = m; |
| while (len-- > 0) |
| to[m++] = path[n++]; |
| } |
| if (m > 1 && to[m - 1] == '/') |
| m--; |
| return (m == to.length)? to : Arrays.copyOf(to, m); |
| } |
| |
| @Override |
| public String toString() { |
| return zfs.getString(path); |
| } |
| |
| @Override |
| public int hashCode() { |
| int h = hashcode; |
| if (h == 0) |
| hashcode = h = Arrays.hashCode(path); |
| return h; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| return obj != null && |
| obj instanceof ZipPath && |
| this.zfs == ((ZipPath)obj).zfs && |
| compareTo((Path) obj) == 0; |
| } |
| |
| @Override |
| public int compareTo(Path other) { |
| final ZipPath o = checkPath(other); |
| int len1 = this.path.length; |
| int len2 = o.path.length; |
| |
| int n = Math.min(len1, len2); |
| byte v1[] = this.path; |
| byte v2[] = o.path; |
| |
| int k = 0; |
| while (k < n) { |
| int c1 = v1[k] & 0xff; |
| int c2 = v2[k] & 0xff; |
| if (c1 != c2) |
| return c1 - c2; |
| k++; |
| } |
| return len1 - len2; |
| } |
| |
| public WatchKey register( |
| WatchService watcher, |
| WatchEvent.Kind<?>[] events, |
| WatchEvent.Modifier... modifiers) { |
| if (watcher == null || events == null || modifiers == null) { |
| throw new NullPointerException(); |
| } |
| // watcher must be associated with a different provider |
| throw new ProviderMismatchException(); |
| } |
| |
| @Override |
| public WatchKey register(WatchService watcher, WatchEvent.Kind<?>... events) { |
| return register(watcher, events, new WatchEvent.Modifier[0]); |
| } |
| |
| @Override |
| public final File toFile() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Iterator<Path> iterator() { |
| return new Iterator<Path>() { |
| private int i = 0; |
| |
| @Override |
| public boolean hasNext() { |
| return (i < getNameCount()); |
| } |
| |
| @Override |
| public Path next() { |
| if (i < getNameCount()) { |
| Path result = getName(i); |
| i++; |
| return result; |
| } else { |
| throw new NoSuchElementException(); |
| } |
| } |
| |
| @Override |
| public void remove() { |
| throw new ReadOnlyFileSystemException(); |
| } |
| }; |
| } |
| |
| ///////////////////////////////////////////////////////////////////// |
| |
| void createDirectory(FileAttribute<?>... attrs) |
| throws IOException |
| { |
| zfs.createDirectory(getResolvedPath(), attrs); |
| } |
| |
| InputStream newInputStream(OpenOption... options) throws IOException |
| { |
| if (options.length > 0) { |
| for (OpenOption opt : options) { |
| if (opt != READ) |
| throw new UnsupportedOperationException("'" + opt + "' not allowed"); |
| } |
| } |
| return zfs.newInputStream(getResolvedPath()); |
| } |
| |
| DirectoryStream<Path> newDirectoryStream(Filter<? super Path> filter) |
| throws IOException |
| { |
| return new ZipDirectoryStream(this, filter); |
| } |
| |
| void delete() throws IOException { |
| zfs.deleteFile(getResolvedPath(), true); |
| } |
| |
| void deleteIfExists() throws IOException { |
| zfs.deleteFile(getResolvedPath(), false); |
| } |
| |
| ZipFileAttributes getAttributes() throws IOException |
| { |
| ZipFileAttributes zfas = zfs.getFileAttributes(getResolvedPath()); |
| if (zfas == null) |
| throw new NoSuchFileException(toString()); |
| return zfas; |
| } |
| |
| void setAttribute(String attribute, Object value, LinkOption... options) |
| throws IOException |
| { |
| String type = null; |
| String attr = null; |
| int colonPos = attribute.indexOf(':'); |
| if (colonPos == -1) { |
| type = "basic"; |
| attr = attribute; |
| } else { |
| type = attribute.substring(0, colonPos++); |
| attr = attribute.substring(colonPos); |
| } |
| ZipFileAttributeView view = ZipFileAttributeView.get(this, type); |
| if (view == null) |
| throw new UnsupportedOperationException("view <" + view + "> is not supported"); |
| view.setAttribute(attr, value); |
| } |
| |
| void setTimes(FileTime mtime, FileTime atime, FileTime ctime) |
| throws IOException |
| { |
| zfs.setTimes(getResolvedPath(), mtime, atime, ctime); |
| } |
| |
| Map<String, Object> readAttributes(String attributes, LinkOption... options) |
| throws IOException |
| |
| { |
| String view = null; |
| String attrs = null; |
| int colonPos = attributes.indexOf(':'); |
| if (colonPos == -1) { |
| view = "basic"; |
| attrs = attributes; |
| } else { |
| view = attributes.substring(0, colonPos++); |
| attrs = attributes.substring(colonPos); |
| } |
| ZipFileAttributeView zfv = ZipFileAttributeView.get(this, view); |
| if (zfv == null) { |
| throw new UnsupportedOperationException("view not supported"); |
| } |
| return zfv.readAttributes(attrs); |
| } |
| |
| FileStore getFileStore() throws IOException { |
| // each ZipFileSystem only has one root (as requested for now) |
| if (exists()) |
| return zfs.getFileStore(this); |
| throw new NoSuchFileException(zfs.getString(path)); |
| } |
| |
| boolean isSameFile(Path other) throws IOException { |
| if (this.equals(other)) |
| return true; |
| if (other == null || |
| this.getFileSystem() != other.getFileSystem()) |
| return false; |
| this.checkAccess(); |
| ((ZipPath)other).checkAccess(); |
| return Arrays.equals(this.getResolvedPath(), |
| ((ZipPath)other).getResolvedPath()); |
| } |
| |
| SeekableByteChannel newByteChannel(Set<? extends OpenOption> options, |
| FileAttribute<?>... attrs) |
| throws IOException |
| { |
| return zfs.newByteChannel(getResolvedPath(), options, attrs); |
| } |
| |
| |
| FileChannel newFileChannel(Set<? extends OpenOption> options, |
| FileAttribute<?>... attrs) |
| throws IOException |
| { |
| return zfs.newFileChannel(getResolvedPath(), options, attrs); |
| } |
| |
| void checkAccess(AccessMode... modes) throws IOException { |
| boolean w = false; |
| boolean x = false; |
| for (AccessMode mode : modes) { |
| switch (mode) { |
| case READ: |
| break; |
| case WRITE: |
| w = true; |
| break; |
| case EXECUTE: |
| x = true; |
| break; |
| default: |
| throw new UnsupportedOperationException(); |
| } |
| } |
| zfs.checkAccess(getResolvedPath()); |
| if ((w && zfs.isReadOnly()) || x) { |
| throw new AccessDeniedException(toString()); |
| } |
| } |
| |
| boolean exists() { |
| try { |
| return zfs.exists(getResolvedPath()); |
| } catch (IOException x) {} |
| return false; |
| } |
| |
| OutputStream newOutputStream(OpenOption... options) throws IOException |
| { |
| if (options.length == 0) |
| return zfs.newOutputStream(getResolvedPath(), |
| CREATE, TRUNCATE_EXISTING, WRITE); |
| return zfs.newOutputStream(getResolvedPath(), options); |
| } |
| |
| void move(ZipPath target, CopyOption... options) |
| throws IOException |
| { |
| if (Files.isSameFile(this.zfs.getZipFile(), target.zfs.getZipFile())) |
| { |
| zfs.copyFile(true, |
| getResolvedPath(), target.getResolvedPath(), |
| options); |
| } else { |
| copyToTarget(target, options); |
| delete(); |
| } |
| } |
| |
| void copy(ZipPath target, CopyOption... options) |
| throws IOException |
| { |
| if (Files.isSameFile(this.zfs.getZipFile(), target.zfs.getZipFile())) |
| zfs.copyFile(false, |
| getResolvedPath(), target.getResolvedPath(), |
| options); |
| else |
| copyToTarget(target, options); |
| } |
| |
| private void copyToTarget(ZipPath target, CopyOption... options) |
| throws IOException |
| { |
| boolean replaceExisting = false; |
| boolean copyAttrs = false; |
| for (CopyOption opt : options) { |
| if (opt == REPLACE_EXISTING) |
| replaceExisting = true; |
| else if (opt == COPY_ATTRIBUTES) |
| copyAttrs = true; |
| } |
| // attributes of source file |
| ZipFileAttributes zfas = getAttributes(); |
| // check if target exists |
| boolean exists; |
| if (replaceExisting) { |
| try { |
| target.deleteIfExists(); |
| exists = false; |
| } catch (DirectoryNotEmptyException x) { |
| exists = true; |
| } |
| } else { |
| exists = target.exists(); |
| } |
| if (exists) |
| throw new FileAlreadyExistsException(target.toString()); |
| |
| if (zfas.isDirectory()) { |
| // create directory or file |
| target.createDirectory(); |
| } else { |
| InputStream is = zfs.newInputStream(getResolvedPath()); |
| try { |
| OutputStream os = target.newOutputStream(); |
| try { |
| byte[] buf = new byte[8192]; |
| int n = 0; |
| while ((n = is.read(buf)) != -1) { |
| os.write(buf, 0, n); |
| } |
| } finally { |
| os.close(); |
| } |
| } finally { |
| is.close(); |
| } |
| } |
| if (copyAttrs) { |
| BasicFileAttributeView view = |
| ZipFileAttributeView.get(target, BasicFileAttributeView.class); |
| try { |
| view.setTimes(zfas.lastModifiedTime(), |
| zfas.lastAccessTime(), |
| zfas.creationTime()); |
| } catch (IOException x) { |
| // rollback? |
| try { |
| target.delete(); |
| } catch (IOException ignore) { } |
| throw x; |
| } |
| } |
| } |
| |
| private static int decode(char c) { |
| if ((c >= '0') && (c <= '9')) |
| return c - '0'; |
| if ((c >= 'a') && (c <= 'f')) |
| return c - 'a' + 10; |
| if ((c >= 'A') && (c <= 'F')) |
| return c - 'A' + 10; |
| assert false; |
| return -1; |
| } |
| |
| // to avoid double escape |
| static String decodeUri(String s) { |
| if (s == null) |
| return s; |
| int n = s.length(); |
| if (n == 0) |
| return s; |
| if (s.indexOf('%') < 0) |
| return s; |
| |
| StringBuilder sb = new StringBuilder(n); |
| byte[] bb = new byte[n]; |
| boolean betweenBrackets = false; |
| |
| for (int i = 0; i < n;) { |
| char c = s.charAt(i); |
| if (c == '[') { |
| betweenBrackets = true; |
| } else if (betweenBrackets && c == ']') { |
| betweenBrackets = false; |
| } |
| if (c != '%' || betweenBrackets ) { |
| sb.append(c); |
| i++; |
| continue; |
| } |
| int nb = 0; |
| while (c == '%') { |
| assert (n - i >= 2); |
| bb[nb++] = (byte)(((decode(s.charAt(++i)) & 0xf) << 4) | |
| (decode(s.charAt(++i)) & 0xf)); |
| if (++i >= n) { |
| break; |
| } |
| c = s.charAt(i); |
| } |
| sb.append(new String(bb, 0, nb, UTF_8)); |
| } |
| return sb.toString(); |
| } |
| } |
