src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystemProvider.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2009, 2019, 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.io.InputStream;
 import java.io.OutputStream;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.nio.channels.AsynchronousFileChannel;
 import java.nio.channels.FileChannel;
 import java.nio.channels.SeekableByteChannel;
 import java.nio.file.*;
 import java.nio.file.DirectoryStream.Filter;
 import java.nio.file.attribute.BasicFileAttributes;
 import java.nio.file.attribute.FileAttribute;
 import java.nio.file.attribute.FileAttributeView;
 import java.nio.file.spi.FileSystemProvider;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ExecutorService;
 import java.util.zip.ZipException;

 /**
  * @author Xueming Shen, Rajendra Gutupalli, Jaya Hangal
  */
 public class ZipFileSystemProvider extends FileSystemProvider {

     private final Map<Path, ZipFileSystem> filesystems = new HashMap<>();

     public ZipFileSystemProvider() {}

     @Override
     public String getScheme() {
         return "jar";
     }

     protected Path uriToPath(URI uri) {
         String scheme = uri.getScheme();
         if ((scheme == null) || !scheme.equalsIgnoreCase(getScheme())) {
             throw new IllegalArgumentException("URI scheme is not '" + getScheme() + "'");
         }
         try {
             // only support legacy JAR URL syntax  jar:{uri}!/{entry} for now
             String spec = uri.getRawSchemeSpecificPart();
             int sep = spec.indexOf("!/");
             if (sep != -1) {
                 spec = spec.substring(0, sep);
             }
             return Paths.get(new URI(spec)).toAbsolutePath();
         } catch (URISyntaxException e) {
             throw new IllegalArgumentException(e.getMessage(), e);
         }
     }

     private boolean ensureFile(Path path) {
         try {
             BasicFileAttributes attrs =
                 Files.readAttributes(path, BasicFileAttributes.class);
             if (!attrs.isRegularFile())
                 throw new UnsupportedOperationException();
             return true;
         } catch (IOException ioe) {
             return false;
         }
     }

     @Override
     public FileSystem newFileSystem(URI uri, Map<String, ?> env)
         throws IOException
     {
         Path path = uriToPath(uri);
         synchronized(filesystems) {
             Path realPath = null;
             if (ensureFile(path)) {
                 realPath = path.toRealPath();
                 if (filesystems.containsKey(realPath))
                     throw new FileSystemAlreadyExistsException();
             }
             ZipFileSystem zipfs;
             try {
                 if (env.containsKey("multi-release")) {
                     zipfs = new JarFileSystem(this, path, env);
                 } else {
                     zipfs = new ZipFileSystem(this, path, env);
                 }
             } catch (ZipException ze) {
                 String pname = path.toString();
                 if (pname.endsWith(".zip") || pname.endsWith(".jar"))
                     throw ze;
                 // assume NOT a zip/jar file
                 throw new UnsupportedOperationException();
             }
             if (realPath == null) {  // newly created
                 realPath = path.toRealPath();
             }
             filesystems.put(realPath, zipfs);
             return zipfs;
         }
     }

     @Override
     public FileSystem newFileSystem(Path path, Map<String, ?> env)
         throws IOException
     {
         ensureFile(path);
         try {
             ZipFileSystem zipfs;
             if (env.containsKey("multi-release")) {
                 zipfs = new JarFileSystem(this, path, env);
             } else {
                 zipfs = new ZipFileSystem(this, path, env);
             }
             return zipfs;
         } catch (ZipException ze) {
             String pname = path.toString();
             if (pname.endsWith(".zip") || pname.endsWith(".jar"))
                 throw ze;
             throw new UnsupportedOperationException();
         }
     }

     @Override
     public Path getPath(URI uri) {
         String spec = uri.getSchemeSpecificPart();
         int sep = spec.indexOf("!/");
         if (sep == -1)
             throw new IllegalArgumentException("URI: "
                 + uri
                 + " does not contain path info ex. jar:file:/c:/foo.zip!/BAR");
         return getFileSystem(uri).getPath(spec.substring(sep + 1));
     }


     @Override
     public FileSystem getFileSystem(URI uri) {
         synchronized (filesystems) {
             ZipFileSystem zipfs = null;
             try {
                 zipfs = filesystems.get(uriToPath(uri).toRealPath());
             } catch (IOException x) {
                 // ignore the ioe from toRealPath(), return FSNFE
             }
             if (zipfs == null)
                 throw new FileSystemNotFoundException();
             return zipfs;
         }
     }

     // Checks that the given file is a UnixPath
     static final ZipPath toZipPath(Path path) {
         if (path == null)
             throw new NullPointerException();
         if (!(path instanceof ZipPath))
             throw new ProviderMismatchException();
         return (ZipPath)path;
     }

     @Override
     public void checkAccess(Path path, AccessMode... modes) throws IOException {
         toZipPath(path).checkAccess(modes);
     }

     @Override
     public void copy(Path src, Path target, CopyOption... options)
         throws IOException
     {
         toZipPath(src).copy(toZipPath(target), options);
     }

     @Override
     public void createDirectory(Path path, FileAttribute<?>... attrs)
         throws IOException
     {
         toZipPath(path).createDirectory(attrs);
     }

     @Override
     public final void delete(Path path) throws IOException {
         toZipPath(path).delete();
     }

     @Override
     public <V extends FileAttributeView> V
         getFileAttributeView(Path path, Class<V> type, LinkOption... options)
     {
         return ZipFileAttributeView.get(toZipPath(path), type);
     }

     @Override
     public FileStore getFileStore(Path path) throws IOException {
         return toZipPath(path).getFileStore();
     }

     @Override
     public boolean isHidden(Path path) {
         return toZipPath(path).isHidden();
     }

     @Override
     public boolean isSameFile(Path path, Path other) throws IOException {
         return toZipPath(path).isSameFile(other);
     }

     @Override
     public void move(Path src, Path target, CopyOption... options)
         throws IOException
     {
         toZipPath(src).move(toZipPath(target), options);
     }

     @Override
     public AsynchronousFileChannel newAsynchronousFileChannel(Path path,
             Set<? extends OpenOption> options,
             ExecutorService exec,
             FileAttribute<?>... attrs)
             throws IOException
     {
         throw new UnsupportedOperationException();
     }

     @Override
     public SeekableByteChannel newByteChannel(Path path,
                                               Set<? extends OpenOption> options,
                                               FileAttribute<?>... attrs)
         throws IOException
     {
         return toZipPath(path).newByteChannel(options, attrs);
     }

     @Override
     public DirectoryStream<Path> newDirectoryStream(
         Path path, Filter<? super Path> filter) throws IOException
     {
         return toZipPath(path).newDirectoryStream(filter);
     }

     @Override
     public FileChannel newFileChannel(Path path,
                                       Set<? extends OpenOption> options,
                                       FileAttribute<?>... attrs)
         throws IOException
     {
         return toZipPath(path).newFileChannel(options, attrs);
     }

     @Override
     public InputStream newInputStream(Path path, OpenOption... options)
         throws IOException
     {
         return toZipPath(path).newInputStream(options);
     }

     @Override
     public OutputStream newOutputStream(Path path, OpenOption... options)
         throws IOException
     {
         return toZipPath(path).newOutputStream(options);
     }

     @Override
     @SuppressWarnings("unchecked") // Cast to A
     public <A extends BasicFileAttributes> A
         readAttributes(Path path, Class<A> type, LinkOption... options)
         throws IOException
     {
         if (type == BasicFileAttributes.class || type == ZipFileAttributes.class)
             return (A)toZipPath(path).getAttributes();
         return null;
     }

     @Override
     public Map<String, Object>
         readAttributes(Path path, String attribute, LinkOption... options)
         throws IOException
     {
         return toZipPath(path).readAttributes(attribute, options);
     }

     @Override
     public Path readSymbolicLink(Path link) throws IOException {
         throw new UnsupportedOperationException("Not supported.");
     }

     @Override
     public void setAttribute(Path path, String attribute,
                              Object value, LinkOption... options)
         throws IOException
     {
         toZipPath(path).setAttribute(attribute, value, options);
     }

     //////////////////////////////////////////////////////////////
     void removeFileSystem(Path zfpath, ZipFileSystem zfs) throws IOException {
         synchronized (filesystems) {
             zfpath = zfpath.toRealPath();
             if (filesystems.get(zfpath) == zfs)
                 filesystems.remove(zfpath);
         }
     }
 }
	/*
	* Copyright (c) 2009, 2019, 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.io.InputStream;
	import java.io.OutputStream;
	import java.net.URI;
	import java.net.URISyntaxException;
	import java.nio.channels.AsynchronousFileChannel;
	import java.nio.channels.FileChannel;
	import java.nio.channels.SeekableByteChannel;
	import java.nio.file.*;
	import java.nio.file.DirectoryStream.Filter;
	import java.nio.file.attribute.BasicFileAttributes;
	import java.nio.file.attribute.FileAttribute;
	import java.nio.file.attribute.FileAttributeView;
	import java.nio.file.spi.FileSystemProvider;
	import java.util.HashMap;
	import java.util.Map;
	import java.util.Set;
	import java.util.concurrent.ExecutorService;
	import java.util.zip.ZipException;

	/**
	* @author Xueming Shen, Rajendra Gutupalli, Jaya Hangal
	*/
	public class ZipFileSystemProvider extends FileSystemProvider {

	private final Map<Path, ZipFileSystem> filesystems = new HashMap<>();

	public ZipFileSystemProvider() {}

	@Override
	public String getScheme() {
	return "jar";
	}

	protected Path uriToPath(URI uri) {
	String scheme = uri.getScheme();
	if ((scheme == null) \|\| !scheme.equalsIgnoreCase(getScheme())) {
	throw new IllegalArgumentException("URI scheme is not '" + getScheme() + "'");
	}
	try {
	// only support legacy JAR URL syntax jar:{uri}!/{entry} for now
	String spec = uri.getRawSchemeSpecificPart();
	int sep = spec.indexOf("!/");
	if (sep != -1) {
	spec = spec.substring(0, sep);
	}
	return Paths.get(new URI(spec)).toAbsolutePath();
	} catch (URISyntaxException e) {
	throw new IllegalArgumentException(e.getMessage(), e);
	}
	}

	private boolean ensureFile(Path path) {
	try {
	BasicFileAttributes attrs =
	Files.readAttributes(path, BasicFileAttributes.class);
	if (!attrs.isRegularFile())
	throw new UnsupportedOperationException();
	return true;
	} catch (IOException ioe) {
	return false;
	}
	}

	@Override
	public FileSystem newFileSystem(URI uri, Map<String, ?> env)
	throws IOException
	{
	Path path = uriToPath(uri);
	synchronized(filesystems) {
	Path realPath = null;
	if (ensureFile(path)) {
	realPath = path.toRealPath();
	if (filesystems.containsKey(realPath))
	throw new FileSystemAlreadyExistsException();
	}
	ZipFileSystem zipfs;
	try {
	if (env.containsKey("multi-release")) {
	zipfs = new JarFileSystem(this, path, env);
	} else {
	zipfs = new ZipFileSystem(this, path, env);
	}
	} catch (ZipException ze) {
	String pname = path.toString();
	if (pname.endsWith(".zip") \|\| pname.endsWith(".jar"))
	throw ze;
	// assume NOT a zip/jar file
	throw new UnsupportedOperationException();
	}
	if (realPath == null) { // newly created
	realPath = path.toRealPath();
	}
	filesystems.put(realPath, zipfs);
	return zipfs;
	}
	}

	@Override
	public FileSystem newFileSystem(Path path, Map<String, ?> env)
	throws IOException
	{
	ensureFile(path);
	try {
	ZipFileSystem zipfs;
	if (env.containsKey("multi-release")) {
	zipfs = new JarFileSystem(this, path, env);
	} else {
	zipfs = new ZipFileSystem(this, path, env);
	}
	return zipfs;
	} catch (ZipException ze) {
	String pname = path.toString();
	if (pname.endsWith(".zip") \|\| pname.endsWith(".jar"))
	throw ze;
	throw new UnsupportedOperationException();
	}
	}

	@Override
	public Path getPath(URI uri) {
	String spec = uri.getSchemeSpecificPart();
	int sep = spec.indexOf("!/");
	if (sep == -1)
	throw new IllegalArgumentException("URI: "
	+ uri
	+ " does not contain path info ex. jar:file:/c:/foo.zip!/BAR");
	return getFileSystem(uri).getPath(spec.substring(sep + 1));
	}


	@Override
	public FileSystem getFileSystem(URI uri) {
	synchronized (filesystems) {
	ZipFileSystem zipfs = null;
	try {
	zipfs = filesystems.get(uriToPath(uri).toRealPath());
	} catch (IOException x) {
	// ignore the ioe from toRealPath(), return FSNFE
	}
	if (zipfs == null)
	throw new FileSystemNotFoundException();
	return zipfs;
	}
	}

	// Checks that the given file is a UnixPath
	static final ZipPath toZipPath(Path path) {
	if (path == null)
	throw new NullPointerException();
	if (!(path instanceof ZipPath))
	throw new ProviderMismatchException();
	return (ZipPath)path;
	}

	@Override
	public void checkAccess(Path path, AccessMode... modes) throws IOException {
	toZipPath(path).checkAccess(modes);
	}

	@Override
	public void copy(Path src, Path target, CopyOption... options)
	throws IOException
	{
	toZipPath(src).copy(toZipPath(target), options);
	}

	@Override
	public void createDirectory(Path path, FileAttribute<?>... attrs)
	throws IOException
	{
	toZipPath(path).createDirectory(attrs);
	}

	@Override
	public final void delete(Path path) throws IOException {
	toZipPath(path).delete();
	}

	@Override
	public <V extends FileAttributeView> V
	getFileAttributeView(Path path, Class<V> type, LinkOption... options)
	{
	return ZipFileAttributeView.get(toZipPath(path), type);
	}

	@Override
	public FileStore getFileStore(Path path) throws IOException {
	return toZipPath(path).getFileStore();
	}

	@Override
	public boolean isHidden(Path path) {
	return toZipPath(path).isHidden();
	}

	@Override
	public boolean isSameFile(Path path, Path other) throws IOException {
	return toZipPath(path).isSameFile(other);
	}

	@Override
	public void move(Path src, Path target, CopyOption... options)
	throws IOException
	{
	toZipPath(src).move(toZipPath(target), options);
	}

	@Override
	public AsynchronousFileChannel newAsynchronousFileChannel(Path path,
	Set<? extends OpenOption> options,
	ExecutorService exec,
	FileAttribute<?>... attrs)
	throws IOException
	{
	throw new UnsupportedOperationException();
	}

	@Override
	public SeekableByteChannel newByteChannel(Path path,
	Set<? extends OpenOption> options,
	FileAttribute<?>... attrs)
	throws IOException
	{
	return toZipPath(path).newByteChannel(options, attrs);
	}

	@Override
	public DirectoryStream<Path> newDirectoryStream(
	Path path, Filter<? super Path> filter) throws IOException
	{
	return toZipPath(path).newDirectoryStream(filter);
	}

	@Override
	public FileChannel newFileChannel(Path path,
	Set<? extends OpenOption> options,
	FileAttribute<?>... attrs)
	throws IOException
	{
	return toZipPath(path).newFileChannel(options, attrs);
	}

	@Override
	public InputStream newInputStream(Path path, OpenOption... options)
	throws IOException
	{
	return toZipPath(path).newInputStream(options);
	}

	@Override
	public OutputStream newOutputStream(Path path, OpenOption... options)
	throws IOException
	{
	return toZipPath(path).newOutputStream(options);
	}

	@Override
	@SuppressWarnings("unchecked") // Cast to A
	public <A extends BasicFileAttributes> A
	readAttributes(Path path, Class<A> type, LinkOption... options)
	throws IOException
	{
	if (type == BasicFileAttributes.class \|\| type == ZipFileAttributes.class)
	return (A)toZipPath(path).getAttributes();
	return null;
	}

	@Override
	public Map<String, Object>
	readAttributes(Path path, String attribute, LinkOption... options)
	throws IOException
	{
	return toZipPath(path).readAttributes(attribute, options);
	}

	@Override
	public Path readSymbolicLink(Path link) throws IOException {
	throw new UnsupportedOperationException("Not supported.");
	}

	@Override
	public void setAttribute(Path path, String attribute,
	Object value, LinkOption... options)
	throws IOException
	{
	toZipPath(path).setAttribute(attribute, value, options);
	}

	//////////////////////////////////////////////////////////////
	void removeFileSystem(Path zfpath, ZipFileSystem zfs) throws IOException {
	synchronized (filesystems) {
	zfpath = zfpath.toRealPath();
	if (filesystems.get(zfpath) == zfs)
	filesystems.remove(zfpath);
	}
	}
	}