--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipPath.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,992 @@
+/*
+ * 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) {
+ Objects.requireNonNull(other, "other");
+ if (!(other instanceof ZipPath))
+ return false;
+ final ZipPath o = (ZipPath)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) {
+ Objects.requireNonNull(other, "other");
+ if (!(other instanceof ZipPath))
+ return false;
+ final ZipPath o = (ZipPath)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();
+ }
+}