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提交 4a8418a7 编写于 作者: A alanb
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7006126: (fs) Updates to file system API (1/2011) 

Reviewed-by: chegar, sherman
上级 809636e7
展开全部 隐藏空白更改
内联 并排
Showing with 8701 addition and 6266 deletion
make/java/java/FILES_java.gmk
浏览文件 @ 4a8418a7
......@@ -443,7 +443,6 @@ JAVA_JAVA_java = \
java/io/FileReader.java \
java/io/PipedReader.java \
java/io/StringReader.java \
java/io/TempFileHelper.java \
java/io/Writer.java \
java/io/BufferedWriter.java \
java/io/PrintWriter.java \
......
make/java/nio/FILES_java.gmk
浏览文件 @ 4a8418a7
......@@ -81,12 +81,12 @@ FILES_src = \
java/nio/file/ClosedDirectoryStreamException.java \
java/nio/file/ClosedFileSystemException.java \
java/nio/file/ClosedWatchServiceException.java \
java/nio/file/CopyMoveHelper.java \
java/nio/file/CopyOption.java \
java/nio/file/DirectoryIteratorException.java \
java/nio/file/DirectoryNotEmptyException.java \
java/nio/file/DirectoryStream.java \
java/nio/file/FileAlreadyExistsException.java \
java/nio/file/FileRef.java \
java/nio/file/FileStore.java \
java/nio/file/FileSystem.java \
java/nio/file/FileSystemAlreadyExistsException.java \
......@@ -116,6 +116,7 @@ FILES_src = \
java/nio/file/StandardCopyOption.java \
java/nio/file/StandardOpenOption.java \
java/nio/file/StandardWatchEventKind.java \
java/nio/file/TempFileHelper.java \
java/nio/file/WatchEvent.java \
java/nio/file/WatchKey.java \
java/nio/file/WatchService.java \
......@@ -127,7 +128,6 @@ FILES_src = \
java/nio/file/attribute/AclEntryType.java \
java/nio/file/attribute/AclFileAttributeView.java \
java/nio/file/attribute/AttributeView.java \
java/nio/file/attribute/Attributes.java \
java/nio/file/attribute/BasicFileAttributeView.java \
java/nio/file/attribute/BasicFileAttributes.java \
java/nio/file/attribute/DosFileAttributeView.java \
......@@ -136,8 +136,6 @@ FILES_src = \
java/nio/file/attribute/FileAttributeView.java \
java/nio/file/attribute/FileOwnerAttributeView.java \
java/nio/file/attribute/FileStoreAttributeView.java \
java/nio/file/attribute/FileStoreSpaceAttributeView.java \
java/nio/file/attribute/FileStoreSpaceAttributes.java \
java/nio/file/attribute/FileTime.java \
java/nio/file/attribute/GroupPrincipal.java \
java/nio/file/attribute/UserDefinedFileAttributeView.java \
......@@ -246,6 +244,7 @@ FILES_src = \
sun/nio/fs/AbstractAclFileAttributeView.java \
sun/nio/fs/AbstractBasicFileAttributeView.java \
sun/nio/fs/AbstractFileTypeDetector.java \
sun/nio/fs/AbstractFileSystemProvider.java \
sun/nio/fs/AbstractPath.java \
sun/nio/fs/AbstractPoller.java \
sun/nio/fs/AbstractUserDefinedFileAttributeView.java \
......
make/mkdemo/Makefile
浏览文件 @ 4a8418a7
......@@ -31,7 +31,7 @@ BUILDDIR = ..
PRODUCT = demos
include $(BUILDDIR)/common/Defs.gmk
SUBDIRS = jni nio
SUBDIRS = jni
SUBDIRS_desktop = applets jfc
SUBDIRS_management = management
SUBDIRS_misc = scripting
......
src/share/classes/java/io/BufferedReader.java
浏览文件 @ 4a8418a7
......@@ -54,6 +54,7 @@ package java.io;
*
* @see FileReader
* @see InputStreamReader
* @see java.nio.file.Files#newBufferedReader
*
* @author Mark Reinhold
* @since JDK1.1
......@@ -374,6 +375,8 @@ public class BufferedReader extends Reader {
* stream has been reached
*
* @exception IOException If an I/O error occurs
*
* @see java.nio.file.Files#readAllLines
*/
public String readLine() throws IOException {
return readLine(false);
......
src/share/classes/java/io/BufferedWriter.java
浏览文件 @ 4a8418a7
......@@ -57,6 +57,7 @@ package java.io;
* @see PrintWriter
* @see FileWriter
* @see OutputStreamWriter
* @see java.nio.file.Files#newBufferedWriter
*
* @author Mark Reinhold
* @since JDK1.1
......
src/share/classes/java/io/File.java
浏览文件 @ 4a8418a7
......@@ -35,8 +35,7 @@ import java.util.ArrayList;
import java.security.AccessController;
import java.security.SecureRandom;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.FileSystems;
import sun.security.action.GetPropertyAction;
/**
......@@ -139,9 +138,10 @@ import sun.security.action.GetPropertyAction;
* many of the limitations of the {@code java.io.File} class.
* The {@link #toPath toPath} method may be used to obtain a {@link
* Path} that uses the abstract path represented by a {@code File} object to
* locate a file. The resulting {@code Path} provides more efficient and
* extensive access to file attributes, additional file operations, and I/O
* exceptions to help diagnose errors when an operation on a file fails.
* locate a file. The resulting {@code Path} may be used with the {@link
* java.nio.file.Files} class to provide more efficient and extensive access to
* additional file operations, file attributes, and I/O exceptions to help
* diagnose errors when an operation on a file fails.
*
* @author unascribed
* @since JDK1.0
......@@ -778,6 +778,12 @@ public class File
* Tests whether the file denoted by this abstract pathname is a
* directory.
*
* <p> Where it is required to distinguish an I/O exception from the case
* that the file is not a directory, or where several attributes of the
* same file are required at the same time, then the {@link
* java.nio.file.Files#readAttributes(Path,Class,LinkOption[])
* Files.readAttributes} method may be used.
*
* @return <code>true</code> if and only if the file denoted by this
* abstract pathname exists <em>and</em> is a directory;
* <code>false</code> otherwise
......@@ -786,8 +792,6 @@ public class File
* If a security manager exists and its <code>{@link
* java.lang.SecurityManager#checkRead(java.lang.String)}</code>
* method denies read access to the file
*
* @see java.nio.file.attribute.Attributes#readBasicFileAttributes
*/
public boolean isDirectory() {
SecurityManager security = System.getSecurityManager();
......@@ -804,6 +808,12 @@ public class File
* addition, satisfies other system-dependent criteria. Any non-directory
* file created by a Java application is guaranteed to be a normal file.
*
* <p> Where it is required to distinguish an I/O exception from the case
* that the file is not a normal file, or where several attributes of the
* same file are required at the same time, then the {@link
* java.nio.file.Files#readAttributes(Path,Class,LinkOption[])
* Files.readAttributes} method may be used.
*
* @return <code>true</code> if and only if the file denoted by this
* abstract pathname exists <em>and</em> is a normal file;
* <code>false</code> otherwise
......@@ -812,8 +822,6 @@ public class File
* If a security manager exists and its <code>{@link
* java.lang.SecurityManager#checkRead(java.lang.String)}</code>
* method denies read access to the file
*
* @see java.nio.file.attribute.Attributes#readBasicFileAttributes
*/
public boolean isFile() {
SecurityManager security = System.getSecurityManager();
......@@ -853,6 +861,13 @@ public class File
* Returns the time that the file denoted by this abstract pathname was
* last modified.
*
* <p> Where it is required to distinguish an I/O exception from the case
* where {@code 0L} is returned, or where several attributes of the
* same file are required at the same time, or where the time of last
* access or the creation time are required, then the {@link
* java.nio.file.Files#readAttributes(Path,Class,LinkOption[])
* Files.readAttributes} method may be used.
*
* @return A <code>long</code> value representing the time the file was
* last modified, measured in milliseconds since the epoch
* (00:00:00 GMT, January 1, 1970), or <code>0L</code> if the
......@@ -862,8 +877,6 @@ public class File
* If a security manager exists and its <code>{@link
* java.lang.SecurityManager#checkRead(java.lang.String)}</code>
* method denies read access to the file
*
* @see java.nio.file.attribute.Attributes#readBasicFileAttributes
*/
public long lastModified() {
SecurityManager security = System.getSecurityManager();
......@@ -877,6 +890,12 @@ public class File
* Returns the length of the file denoted by this abstract pathname.
* The return value is unspecified if this pathname denotes a directory.
*
* <p> Where it is required to distinguish an I/O exception from the case
* that {@code 0L} is returned, or where several attributes of the same file
* are required at the same time, then the {@link
* java.nio.file.Files#readAttributes(Path,Class,LinkOption[])
* Files.readAttributes} method may be used.
*
* @return The length, in bytes, of the file denoted by this abstract
* pathname, or <code>0L</code> if the file does not exist. Some
* operating systems may return <code>0L</code> for pathnames
......@@ -886,8 +905,6 @@ public class File
* If a security manager exists and its <code>{@link
* java.lang.SecurityManager#checkRead(java.lang.String)}</code>
* method denies read access to the file
*
* @see java.nio.file.attribute.Attributes#readBasicFileAttributes
*/
public long length() {
SecurityManager security = System.getSecurityManager();
......@@ -937,11 +954,10 @@ public class File
* this pathname denotes a directory, then the directory must be empty in
* order to be deleted.
*
* <p> Note that the {@link Path} class defines the {@link Path#delete
* delete} method to throw an {@link IOException} when a file cannot be
* deleted. This is useful for error reporting and to diagnose why a file
* cannot be deleted. The {@link #toPath toPath} method may be used to
* obtain a {@code Path} representing this abstract pathname.
* <p> Note that the {@link java.nio.file.Files} class defines the {@link
* java.nio.file.Files#delete(Path) delete} method to throw an {@link IOException}
* when a file cannot be deleted. This is useful for error reporting and to
* diagnose why a file cannot be deleted.
*
* @return <code>true</code> if and only if the file or directory is
* successfully deleted; <code>false</code> otherwise
......@@ -1009,12 +1025,11 @@ public class File
* will appear in any specific order; they are not, in particular,
* guaranteed to appear in alphabetical order.
*
* <p> Note that the {@link Path} class defines the {@link
* Path#newDirectoryStream newDirectoryStream} method to open a directory
* and iterate over the names of the files in the directory. This may use
* less resources when working with very large directories. The {@link
* #toPath toPath} method may be used to obtain a {@code Path} representing
* this abstract pathname.
* <p> Note that the {@link java.nio.file.Files} class defines the {@link
* java.nio.file.Files#newDirectoryStream(Path) newDirectoryStream} method to
* open a directory and iterate over the names of the files in the directory.
* This may use less resources when working with very large directories, and
* may be more responsive when working with remote directories.
*
* @return An array of strings naming the files and directories in the
* directory denoted by this abstract pathname. The array will be
......@@ -1061,6 +1076,8 @@ public class File
* If a security manager exists and its {@link
* SecurityManager#checkRead(String)} method denies read access to
* the directory
*
* @see java.nio.file.Files#newDirectoryStream(Path,String)
*/
public String[] list(FilenameFilter filter) {
String names[] = list();
......@@ -1095,12 +1112,11 @@ public class File
* will appear in any specific order; they are not, in particular,
* guaranteed to appear in alphabetical order.
*
* <p> Note that the {@link Path} class defines the {@link
* Path#newDirectoryStream newDirectoryStream} method to open a directory
* and iterate over the names of the files in the directory. This may use
* less resources when working with very large directories. The {@link
* #toPath toPath} method may be used to obtain a {@code Path} representing
* this abstract pathname.
* <p> Note that the {@link java.nio.file.Files} class defines the {@link
* java.nio.file.Files#newDirectoryStream(Path) newDirectoryStream} method
* to open a directory and iterate over the names of the files in the
* directory. This may use less resources when working with very large
* directories.
*
* @return An array of abstract pathnames denoting the files and
* directories in the directory denoted by this abstract pathname.
......@@ -1154,6 +1170,7 @@ public class File
* the directory
*
* @since 1.2
* @see java.nio.file.Files#newDirectoryStream(Path,String)
*/
public File[] listFiles(FilenameFilter filter) {
String ss[] = list();
......@@ -1191,6 +1208,7 @@ public class File
* the directory
*
* @since 1.2
* @see java.nio.file.Files#newDirectoryStream(Path,java.nio.file.DirectoryStream.Filter)
*/
public File[] listFiles(FileFilter filter) {
String ss[] = list();
......@@ -1207,12 +1225,6 @@ public class File
/**
* Creates the directory named by this abstract pathname.
*
* <p> Note that the {@link Path} class defines the {@link Path#createDirectory
* createDirectory} method to throw an {@link IOException} when a directory
* cannot be created. This is useful for error reporting and to diagnose why
* a directory cannot be created. The {@link #toPath toPath} method may be
* used to obtain a {@code Path} representing this abstract pathname.
*
* @return <code>true</code> if and only if the directory was
* created; <code>false</code> otherwise
*
......@@ -1278,10 +1290,9 @@ public class File
* already exists. The return value should always be checked to make sure
* that the rename operation was successful.
*
* <p> Note that the {@link Path} class defines the {@link Path#moveTo
* moveTo} method to move or rename a file in a platform independent manner.
* The {@link #toPath toPath} method may be used to obtain a {@code Path}
* representing this abstract pathname.
* <p> Note that the {@link java.nio.file.Files} class defines the {@link
* java.nio.file.Files#move move} method to move or rename a file in a
* platform independent manner.
*
* @param dest The new abstract pathname for the named file
*
......@@ -1369,10 +1380,9 @@ public class File
* Sets the owner's or everybody's write permission for this abstract
* pathname.
*
* <p> The {@link java.nio.file.attribute.Attributes Attributes} class
* defines methods that operate on file attributes including file
* permissions. This may be used when finer manipulation of file permissions
* is required.
* <p> The {@link java.nio.file.Files} class defines methods that operate on
* file attributes including file permissions. This may be used when finer
* manipulation of file permissions is required.
*
* @param writable
* If <code>true</code>, sets the access permission to allow write
......@@ -1437,10 +1447,9 @@ public class File
* Sets the owner's or everybody's read permission for this abstract
* pathname.
*
* <p> The {@link java.nio.file.attribute.Attributes Attributes} class
* defines methods that operate on file attributes including file
* permissions. This may be used when finer manipulation of file permissions
* is required.
* <p> The {@link java.nio.file.Files} class defines methods that operate on
* file attributes including file permissions. This may be used when finer
* manipulation of file permissions is required.
*
* @param readable
* If <code>true</code>, sets the access permission to allow read
......@@ -1511,10 +1520,9 @@ public class File
* Sets the owner's or everybody's execute permission for this abstract
* pathname.
*
* <p> The {@link java.nio.file.attribute.Attributes Attributes} class
* defines methods that operate on file attributes including file
* permissions. This may be used when finer manipulation of file permissions
* is required.
* <p> The {@link java.nio.file.Files} class defines methods that operate on
* file attributes including file permissions. This may be used when finer
* manipulation of file permissions is required.
*
* @param executable
* If <code>true</code>, sets the access permission to allow execute
......@@ -1646,6 +1654,7 @@ public class File
* filesystem roots.
*
* @since 1.2
* @see java.nio.file.FileStore
*/
public static File[] listRoots() {
return fs.listRoots();
......@@ -1753,7 +1762,7 @@ public class File
/* -- Temporary files -- */
static class TempDirectory {
private static class TempDirectory {
private TempDirectory() { }
// temporary directory location
......@@ -1880,11 +1889,12 @@ public class File
* java.lang.String, java.io.File)
* createTempFile(prefix,&nbsp;suffix,&nbsp;null)}</code>.
*
* <p> The {@link #createTemporaryFile(String,String,FileAttribute[])} method
* provides an alternative method to create an empty file in the
* temporary-file directory. Files created by that method may have more
* restrictive access permissions to files created by this method and so
* may be more suited to security-sensitive applications.
* <p> The {@link
* java.nio.file.Files#createTempFile(String,String,java.nio.file.attribute.FileAttribute[])
* Files.createTempFile} method provides an alternative method to create an
* empty file in the temporary-file directory. Files created by that method
* may have more restrictive access permissions to files created by this
* method and so may be more suited to security-sensitive applications.
*
* @param prefix The prefix string to be used in generating the file's
* name; must be at least three characters long
......@@ -1907,6 +1917,7 @@ public class File
* method does not allow a file to be created
*
* @since 1.2
* @see java.nio.file.Files#createTempDirectory(String,FileAttribute[])
*/
public static File createTempFile(String prefix, String suffix)
throws IOException
......@@ -1914,61 +1925,6 @@ public class File
return createTempFile(prefix, suffix, null);
}
/**
* Creates an empty file in the default temporary-file directory, using
* the given prefix and suffix to generate its name.
*
* <p> The {@code attrs} parameter is an optional array of {@link FileAttribute
* attributes} to set atomically when creating the file. Each attribute is
* identified by its {@link FileAttribute#name name}. If more than one attribute
* of the same name is included in the array then all but the last occurrence
* is ignored.
*
* <p> Where the {@code attrs} parameter does not specify <i>access
* permissions</i> to set atomically when creating the file, then the
* resulting file may have more restrictive access permissions than files
* created by the {@link #createTempFile(java.lang.String, java.lang.String)}
* method.
*
* @param prefix
* The prefix string to be used in generating the file's
* name; must be at least three characters long
* @param suffix
* The suffix string to be used in generating the file's
* name; may be {@code null}, in which case the suffix
* {@code ".tmp"} will be used
* @param attrs
* An optional list of file attributes to set atomically when creating
* the file
*
* @return An abstract pathname denoting a newly-created empty file
*
* @throws IllegalArgumentException
* If the {@code prefix} argument contains fewer than three
* characters
* @throws UnsupportedOperationException
* If the array contains an attribute that cannot be set atomically
* when creating the file
* @throws IOException
* If a file could not be created
* @throws SecurityException
* If a security manager exists and its <code>{@link
* java.lang.SecurityManager#checkWrite(java.lang.String)}</code>
* method does not allow a file to be created.
*
* @since 1.7
*/
public static File createTemporaryFile(String prefix,
String suffix,
FileAttribute<?>... attrs)
throws IOException
{
if (prefix.length() < 3)
throw new IllegalArgumentException("Prefix string too short");
suffix = (suffix == null) ? ".tmp" : suffix;
return TempFileHelper.createFile(prefix, suffix, attrs);
}
/* -- Basic infrastructure -- */
/**
......@@ -2104,6 +2060,7 @@ public class File
* path (see {@link java.nio.file.FileSystem#getPath FileSystem.getPath})
*
* @since 1.7
* @see Path#toFile
*/
public Path toPath() {
Path result = filePath;
......@@ -2111,12 +2068,7 @@ public class File
synchronized (this) {
result = filePath;
if (result == null) {
if (path.length() == 0) {
// assume default file system treats "." as current directory
result = Paths.get(".");
} else {
result = Paths.get(path);
}
result = FileSystems.getDefault().getPath(path);
filePath = result;
}
}
......
src/share/classes/java/io/FileInputStream.java
浏览文件 @ 4a8418a7
......@@ -42,6 +42,7 @@ import sun.nio.ch.FileChannelImpl;
* @see java.io.File
* @see java.io.FileDescriptor
* @see java.io.FileOutputStream
* @see java.nio.file.Files#newInputStream
* @since JDK1.0
*/
public
......
src/share/classes/java/io/FileOutputStream.java
浏览文件 @ 4a8418a7
......@@ -46,6 +46,7 @@ import sun.nio.ch.FileChannelImpl;
* @see java.io.File
* @see java.io.FileDescriptor
* @see java.io.FileInputStream
* @see java.nio.file.Files#newOutputStream
* @since JDK1.0
*/
public
......
src/share/classes/java/io/FilePermission.java
浏览文件 @ 4a8418a7
......@@ -72,7 +72,7 @@ import sun.security.util.SecurityConstants;
* <DT> readlink
* <DD> read link permission. Allows the target of a
* <a href="../nio/file/package-summary.html#links">symbolic link</a>
* to be read by invoking the {@link java.nio.file.Path#readSymbolicLink
* to be read by invoking the {@link java.nio.file.Files#readSymbolicLink
* readSymbolicLink } method.
* </DL>
* <P>
......
src/share/classes/java/nio/channels/FileChannel.java
浏览文件 @ 4a8418a7
......@@ -248,7 +248,7 @@ public abstract class FileChannel
* FileSystemProvider#newFileChannel newFileChannel} method on the
* provider that created the {@code Path}.
*
* @param file
* @param path
* The path of the file to open or create
* @param options
* Options specifying how the file is opened
......@@ -261,7 +261,7 @@ public abstract class FileChannel
* @throws IllegalArgumentException
* If the set contains an invalid combination of options
* @throws UnsupportedOperationException
* If the {@code file} is associated with a provider that does not
* If the {@code path} is associated with a provider that does not
* support creating file channels, or an unsupported open option is
* specified, or the array contains an attribute that cannot be set
* atomically when creating the file
......@@ -278,13 +278,13 @@ public abstract class FileChannel
*
* @since 1.7
*/
public static FileChannel open(Path file,
public static FileChannel open(Path path,
Set<? extends OpenOption> options,
FileAttribute<?>... attrs)
throws IOException
{
FileSystemProvider provider = file.getFileSystem().provider();
return provider.newFileChannel(file, options, attrs);
FileSystemProvider provider = path.getFileSystem().provider();
return provider.newFileChannel(path, options, attrs);
}
private static final FileAttribute<?>[] NO_ATTRIBUTES = new FileAttribute[0];
......@@ -295,10 +295,12 @@ public abstract class FileChannel
* <p> An invocation of this method behaves in exactly the same way as the
* invocation
* <pre>
* fc.{@link #open(Path,Set,FileAttribute[]) open}(file, options, new FileAttribute&lt;?&gt;[0]);
* fc.{@link #open(Path,Set,FileAttribute[]) open}(file, opts, new FileAttribute&lt;?&gt;[0]);
* </pre>
* where {@code opts} is a set of the options specified in the {@code
* options} array.
*
* @param file
* @param path
* The path of the file to open or create
* @param options
* Options specifying how the file is opened
......@@ -308,7 +310,7 @@ public abstract class FileChannel
* @throws IllegalArgumentException
* If the set contains an invalid combination of options
* @throws UnsupportedOperationException
* If the {@code file} is associated with a provider that does not
* If the {@code path} is associated with a provider that does not
* support creating file channels, or an unsupported open option is
* specified
* @throws IOException
......@@ -324,12 +326,12 @@ public abstract class FileChannel
*
* @since 1.7
*/
public static FileChannel open(Path file, OpenOption... options)
public static FileChannel open(Path path, OpenOption... options)
throws IOException
{
Set<OpenOption> set = new HashSet<OpenOption>(options.length);
Collections.addAll(set, options);
return open(file, set, NO_ATTRIBUTES);
return open(path, set, NO_ATTRIBUTES);
}
// -- Channel operations --
......
src/share/classes/java/nio/channels/SeekableByteChannel.java
浏览文件 @ 4a8418a7
......@@ -47,7 +47,7 @@ import java.io.IOException;
* so that method invocations on the implementation class can be chained.
*
* @since 1.7
* @see java.nio.file.Path#newByteChannel
* @see java.nio.file.Files#newByteChannel
*/
public interface SeekableByteChannel
......
src/share/classes/java/nio/file/AccessMode.java
浏览文件 @ 4a8418a7
......@@ -29,8 +29,6 @@ package java.nio.file;
* Defines access modes used to test the accessibility of a file.
*
* @since 1.7
*
* @see Path#checkAccess
*/
public enum AccessMode {
......
src/share/classes/java/nio/file/CopyMoveHelper.java 0 → 100644
浏览文件 @ 4a8418a7
/*
* Copyright (c) 2011, 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 java.nio.file;
import java.nio.file.attribute.*;
import java.io.InputStream;
import java.io.IOException;
/**
* Helper class to support copying or moving files when the source and target
* are associated with different providers.
*/
class CopyMoveHelper {
private CopyMoveHelper() { }
/**
* Parses the arguments for a file copy operation.
*/
private static class CopyOptions {
boolean replaceExisting = false;
boolean copyAttributes = false;
boolean followLinks = true;
private CopyOptions() { }
static CopyOptions parse(CopyOption... options) {
CopyOptions result = new CopyOptions();
for (CopyOption option: options) {
if (option == StandardCopyOption.REPLACE_EXISTING) {
result.replaceExisting = true;
continue;
}
if (option == LinkOption.NOFOLLOW_LINKS) {
result.followLinks = false;
continue;
}
if (option == StandardCopyOption.COPY_ATTRIBUTES) {
result.copyAttributes = true;
continue;
}
if (option == null)
throw new NullPointerException();
throw new UnsupportedOperationException("'" + option +
"' is not a recognized copy option");
}
return result;
}
}
/**
* Converts the given array of options for moving a file to options suitable
* for copying the file when a move is implemented as copy + delete.
*/
private static CopyOption[] convertMoveToCopyOptions(CopyOption... options)
throws AtomicMoveNotSupportedException
{
int len = options.length;
CopyOption[] newOptions = new CopyOption[len+2];
for (int i=0; i<len; i++) {
CopyOption option = options[i];
if (option == StandardCopyOption.ATOMIC_MOVE) {
throw new AtomicMoveNotSupportedException(null, null,
"Atomic move between providers is not supported");
}
newOptions[i] = option;
}
newOptions[len] = LinkOption.NOFOLLOW_LINKS;
newOptions[len+1] = StandardCopyOption.COPY_ATTRIBUTES;
return newOptions;
}
/**
* Simple copy for use when source and target are associated with different
* providers
*/
static void copyToForeignTarget(Path source, Path target,
CopyOption... options)
throws IOException
{
CopyOptions opts = CopyOptions.parse(options);
LinkOption[] linkOptions = (opts.followLinks) ? new LinkOption[0] :
new LinkOption[] { LinkOption.NOFOLLOW_LINKS };
// attributes of source file
BasicFileAttributes attrs = Files.readAttributes(source,
BasicFileAttributes.class,
linkOptions);
if (attrs.isSymbolicLink())
throw new IOException("Copying of symbolic links not supported");
// delete target if it exists and REPLACE_EXISTING is specified
if (opts.replaceExisting) {
Files.deleteIfExists(target);
} else if (Files.exists(target))
throw new FileAlreadyExistsException(target.toString());
// create directory or copy file
if (attrs.isDirectory()) {
Files.createDirectory(target);
} else {
try (InputStream in = Files.newInputStream(source)) {
Files.copy(in, target);
}
}
// copy basic attributes to target
if (opts.copyAttributes) {
BasicFileAttributeView view =
Files.getFileAttributeView(target, BasicFileAttributeView.class, linkOptions);
try {
view.setTimes(attrs.lastModifiedTime(),
attrs.lastAccessTime(),
attrs.creationTime());
} catch (IOException x) {
// rollback
try {
Files.delete(target);
} catch (IOException ignore) { }
throw x;
}
}
}
/**
* Simple move implements as copy+delete for use when source and target are
* associated with different providers
*/
static void moveToForeignTarget(Path source, Path target,
CopyOption... options) throws IOException
{
copyToForeignTarget(source, target, convertMoveToCopyOptions(options));
Files.delete(source);
}
}
src/share/classes/java/nio/file/CopyOption.java
浏览文件 @ 4a8418a7
......@@ -28,8 +28,12 @@ package java.nio.file;
/**
* An object that configures how to copy or move a file.
*
* <p> Objects of this type may be used with the {@link Path#copyTo copyTo} and
* {@link Path#moveTo moveTo} methods to configure how a file is copied or moved.
* <p> Objects of this type may be used with the {@link
* Files#copy(Path,Path,CopyOption[]) Files.copy(Path,Path,CopyOption...)},
* {@link Files#copy(java.io.InputStream,Path,CopyOption[])
* Files.copy(InputStream,Path,CopyOption...)} and {@link Files#move
* Files.move(Path,Path,CopyOption...)} methods to configure how a file is
* copied or moved.
*
* <p> The {@link StandardCopyOption} enumeration type defines the
* <i>standard</i> options.
......
src/share/classes/java/nio/file/DirectoryStream.java
浏览文件 @ 4a8418a7
......@@ -54,7 +54,7 @@ import java.io.IOException;
* construct to ensure that the stream is closed:
* <pre>
* Path dir = ...
* try (DirectoryStream&lt;Path&gt; stream = dir.newDirectoryStream()) {
* try (DirectoryStream&lt;Path&gt; stream = Files.newDirectoryStream(dir)) {
* for (Path entry: stream) {
* ...
* }
......@@ -97,8 +97,8 @@ import java.io.IOException;
* both the for-each and try-with-resources constructs.
* <pre>
* List&lt;Path&gt; listSourceFiles(Path dir) throws IOException {
* List&lt;Path&gt; result = new ArrayList&lt;Path&gt;();
* try (DirectoryStream&lt;Path&gt; stream = dir.newDirectoryStream("*.{c,h,cpp,hpp,java}")) {
* List&lt;Path&gt; result = new ArrayList&lt;&gt;();
* try (DirectoryStream&lt;Path&gt; stream = Files.newDirectoryStream(dir, "*.{c,h,cpp,hpp,java}")) {
* for (Path entry: stream) {
* result.add(entry);
* }
......@@ -113,7 +113,7 @@ import java.io.IOException;
*
* @since 1.7
*
* @see Path#newDirectoryStream
* @see Files#newDirectoryStream(Path)
*/
public interface DirectoryStream<T>
......@@ -122,9 +122,9 @@ public interface DirectoryStream<T>
/**
* An interface that is implemented by objects that decide if a directory
* entry should be accepted or filtered. A {@code Filter} is passed as the
* parameter to the {@link Path#newDirectoryStream(DirectoryStream.Filter)
* newDirectoryStream} method when opening a directory to iterate over the
* entries in the directory.
* parameter to the {@link Files#newDirectoryStream(Path,DirectoryStream.Filter)}
* method when opening a directory to iterate over the entries in the
* directory.
*
* @param <T> the type of the directory entry
*
......
src/share/classes/java/nio/file/FileRef.java 已删除 100644 → 0
浏览文件 @ 809636e7
/*
* Copyright (c) 2007, 2009, 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 java.nio.file;
import java.nio.file.attribute.*;
import java.util.Map;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.IOException;
/**
* A reference to a file.
*
* <p> A {@code FileRef} is an object that locates a file and defines methods to
* open the file for reading or writing. It also provides access to associated
* metadata or file attributes.
*
* @since 1.7
* @see java.nio.file.attribute.Attributes
* @see java.io.File#toPath
*/
public interface FileRef {
/**
* Opens the file referenced by this object, returning an input stream to
* read from the file. The stream will not be buffered, and is not required
* to support the {@link InputStream#mark mark} or {@link InputStream#reset
* reset} methods. The stream will be safe for access by multiple concurrent
* threads. Reading commences at the beginning of the file.
*
* <p> The {@code options} parameter determines how the file is opened.
* If no options are present then it is equivalent to opening the file with
* the {@link StandardOpenOption#READ READ} option. In addition to the {@code
* READ} option, an implementation may also support additional implementation
* specific options.
*
* @return an input stream to read bytes from the file
*
* @throws IllegalArgumentException
* if an invalid combination of options is specified
* @throws UnsupportedOperationException
* if an unsupported option is specified
* @throws IOException
* if an I/O error occurs
* @throws SecurityException
* In the case of the default provider, and a security manager is
* installed, the {@link SecurityManager#checkRead(String) checkRead}
* method is invoked to check read access to the file.
*/
InputStream newInputStream(OpenOption... options) throws IOException;
/**
* Opens or creates the file located by this object for writing, returning
* an output stream to write bytes to the file.
*
* <p> The {@code options} parameter determines how the file is opened.
* If no options are present then this method creates a new file for writing
* or truncates an existing file. In addition to the {@link StandardOpenOption
* standard} options, an implementation may also support additional
* implementation specific options.
*
* <p> The resulting stream will not be buffered. The stream will be safe
* for access by multiple concurrent threads.
*
* @param options
* options specifying how the file is opened
*
* @return a new output stream
*
* @throws IllegalArgumentException
* if {@code options} contains an invalid combination of options
* @throws UnsupportedOperationException
* if an unsupported option is specified
* @throws IOException
* if an I/O error occurs
* @throws SecurityException
* In the case of the default provider, and a security manager is
* installed, the {@link SecurityManager#checkWrite(String) checkWrite}
* method is invoked to check write access to the file.
*/
OutputStream newOutputStream(OpenOption... options) throws IOException;
/**
* Returns a file attribute view of a given type.
*
* <p> A file attribute view provides a read-only or updatable view of a
* set of file attributes. This method is intended to be used where the file
* attribute view defines type-safe methods to read or update the file
* attributes. The {@code type} parameter is the type of the attribute view
* required and the method returns an instance of that type if supported.
* The {@link BasicFileAttributeView} type supports access to the basic
* attributes of a file. Invoking this method to select a file attribute
* view of that type will always return an instance of that class.
*
* <p> The {@code options} array may be used to indicate how symbolic links
* are handled by the resulting file attribute view for the case that the
* file is a symbolic link. By default, symbolic links are followed. If the
* option {@link LinkOption#NOFOLLOW_LINKS NOFOLLOW_LINKS} is present then
* symbolic links are not followed. This option is ignored by implementations
* that do not support symbolic links.
*
* @param type
* the {@code Class} object corresponding to the file attribute view
* @param options
* options indicating how symbolic links are handled
*
* @return a file attribute view of the specified type, or {@code null} if
* the attribute view type is not available
*
* @throws UnsupportedOperationException
* If options contains an unsupported option. This exception is
* specified to allow the {@code LinkOption} enum be extended
* in future releases.
*
* @see Attributes#readBasicFileAttributes
*/
<V extends FileAttributeView> V getFileAttributeView(Class<V> type,
LinkOption... options);
/**
* Sets the value of a file attribute.
*
* <p> The {@code attribute} parameter identifies the attribute to be set
* and takes the form:
* <blockquote>
* [<i>view-name</i><b>:</b>]<i>attribute-name</i>
* </blockquote>
* where square brackets [...] delineate an optional component and the
* character {@code ':'} stands for itself.
*
* <p> <i>view-name</i> is the {@link FileAttributeView#name name} of a {@link
* FileAttributeView} that identifies a set of file attributes. If not
* specified then it defaults to {@code "basic"}, the name of the file
* attribute view that identifies the basic set of file attributes common to
* many file systems. <i>attribute-name</i> is the name of the attribute
* within the set.
*
* <p> <b>Usage Example:</b>
* Suppose we want to set the DOS "hidden" attribute:
* <pre>
* file.setAttribute("dos:hidden", true);
* </pre>
*
* @param attribute
* the attribute to set
* @param value
* the attribute value
* @param options
* options indicating how symbolic links are handled
*
* @throws UnsupportedOperationException
* if the attribute view is not available or it does not support
* updating the attribute
* @throws IllegalArgumentException
* if the attribute value is of the correct type but has an
* inappropriate value
* @throws ClassCastException
* If the attribute value is not of the expected type or is a
* collection containing elements that are not of the expected
* type
* @throws IOException
* If an I/O error occurs
* @throws SecurityException
* In the case of the default provider, and a security manager is
* installed, its {@link SecurityManager#checkWrite(String) checkWrite}
* method denies write access to the file. If this method is invoked
* to set security sensitive attributes then the security manager
* may be invoked to check for additional permissions.
*/
void setAttribute(String attribute, Object value, LinkOption... options)
throws IOException;
/**
* Reads the value of a file attribute.
*
* <p> The {@code attribute} parameter identifies the attribute to be read
* and takes the form:
* <blockquote>
* [<i>view-name</i><b>:</b>]<i>attribute-name</i>
* </blockquote>
* where square brackets [...] delineate an optional component and the
* character {@code ':'} stands for itself.
*
* <p> <i>view-name</i> is the {@link FileAttributeView#name name} of a {@link
* FileAttributeView} that identifies a set of file attributes. If not
* specified then it defaults to {@code "basic"}, the name of the file
* attribute view that identifies the basic set of file attributes common to
* many file systems. <i>attribute-name</i> is the name of the attribute.
*
* <p> The {@code options} array may be used to indicate how symbolic links
* are handled for the case that the file is a symbolic link. By default,
* symbolic links are followed and the file attribute of the final target
* of the link is read. If the option {@link LinkOption#NOFOLLOW_LINKS
* NOFOLLOW_LINKS} is present then symbolic links are not followed and so
* the method returns the file attribute of the symbolic link.
*
* <p> <b>Usage Example:</b>
* Suppose we require the user ID of the file owner on a system that
* supports a "{@code unix}" view:
* <pre>
* int uid = (Integer)file.getAttribute("unix:uid");
* </pre>
*
* @param attribute
* the attribute to read
* @param options
* options indicating how symbolic links are handled
* @return the attribute value or {@code null} if the attribute view
* is not available or it does not support reading the attribute
*
* reading the attribute
* @throws IOException
* if an I/O error occurs
* @throws SecurityException
* In the case of the default provider, and a security manager is
* installed, its {@link SecurityManager#checkRead(String) checkRead}
* method denies read access to the file. If this method is invoked
* to read security sensitive attributes then the security manager
* may be invoked to check for additional permissions.
*/
Object getAttribute(String attribute, LinkOption... options) throws IOException;
/**
* Reads a set of file attributes as a bulk operation.
*
* <p> The {@code attributes} parameter identifies the attributes to be read
* and takes the form:
* <blockquote>
* [<i>view-name</i><b>:</b>]<i>attribute-list</i>
* </blockquote>
* where square brackets [...] delineate an optional component and the
* character {@code ':'} stands for itself.
*
* <p> <i>view-name</i> is the {@link FileAttributeView#name name} of a {@link
* FileAttributeView} that identifies a set of file attributes. If not
* specified then it defaults to {@code "basic"}, the name of the file
* attribute view that identifies the basic set of file attributes common to
* many file systems.
*
* <p> The <i>attribute-list</i> component is a comma separated list of
* zero or more names of attributes to read. If the list contains the value
* {@code "*"} then all attributes are read. Attributes that are not supported
* are ignored and will not be present in the returned map. It is
* implementation specific if all attributes are read as an atomic operation
* with respect to other file system operations.
*
* <p> The following examples demonstrate possible values for the {@code
* attributes} parameter:
*
* <blockquote>
* <table border="0">
* <tr>
* <td> {@code "*"} </td>
* <td> Read all {@link BasicFileAttributes basic-file-attributes}. </td>
* </tr>
* <tr>
* <td> {@code "size,lastModifiedTime,lastAccessTime"} </td>
* <td> Reads the file size, last modified time, and last access time
* attributes. </td>
* </tr>
* <tr>
* <td> {@code "posix:*"} </td>
* <td> Read all {@link PosixFileAttributes POSIX-file-attributes}.. </td>
* </tr>
* <tr>
* <td> {@code "posix:permissions,owner,size"} </td>
* <td> Reads the POSX file permissions, owner, and file size. </td>
* </tr>
* </table>
* </blockquote>
*
* <p> The {@code options} array may be used to indicate how symbolic links
* are handled for the case that the file is a symbolic link. By default,
* symbolic links are followed and the file attribute of the final target
* of the link is read. If the option {@link LinkOption#NOFOLLOW_LINKS
* NOFOLLOW_LINKS} is present then symbolic links are not followed and so
* the method returns the file attribute of the symbolic link.
*
* @param attributes
* The attributes to read
* @param options
* Options indicating how symbolic links are handled
*
* @return A map of the attributes returned; may be empty. The map's keys
* are the attribute names, its values are the attribute values
*
* @throws IOException
* If an I/O error occurs
* @throws SecurityException
* In the case of the default provider, and a security manager is
* installed, its {@link SecurityManager#checkRead(String) checkRead}
* method denies read access to the file. If this method is invoked
* to read security sensitive attributes then the security manager
* may be invoke to check for additional permissions.
*/
Map<String,?> readAttributes(String attributes, LinkOption... options)
throws IOException;
}
src/share/classes/java/nio/file/FileStore.java
浏览文件 @ 4a8418a7
......@@ -32,16 +32,13 @@ import java.io.IOException;
* Storage for files. A {@code FileStore} represents a storage pool, device,
* partition, volume, concrete file system or other implementation specific means
* of file storage. The {@code FileStore} for where a file is stored is obtained
* by invoking the {@link Path#getFileStore getFileStore} method, or all file
* by invoking the {@link Files#getFileStore getFileStore} method, or all file
* stores can be enumerated by invoking the {@link FileSystem#getFileStores
* getFileStores} method.
*
* <p> In addition to the methods defined by this class, a file store may support
* one or more {@link FileStoreAttributeView FileStoreAttributeView} classes
* that provide a read-only or updatable view of a set of file store attributes.
* File stores associated with the default provider support the {@link
* FileStoreSpaceAttributeView} to read the space related attributes of the
* file store.
*
* @since 1.7
*/
......@@ -86,6 +83,51 @@ public abstract class FileStore {
*/
public abstract boolean isReadOnly();
/**
* Returns the size, in bytes, of the file store.
*
* @return the size of the file store, in bytes
*
* @throws IOException
* if an I/O error occurs
*/
public abstract long getTotalSpace() throws IOException;
/**
* Returns the number of bytes available to this Java virtual machine on the
* file store.
*
* <p> The returned number of available bytes is a hint, but not a
* guarantee, that it is possible to use most or any of these bytes. The
* number of usable bytes is most likely to be accurate immediately
* after the space attributes are obtained. It is likely to be made inaccurate
* by any external I/O operations including those made on the system outside
* of this Java virtual machine.
*
* @return the number of bytes available
*
* @throws IOException
* if an I/O error occurs
*/
public abstract long getUsableSpace() throws IOException;
/**
* Returns the number of unallocated bytes in the file store.
*
* <p> The returned number of unallocated bytes is a hint, but not a
* guarantee, that it is possible to use most or any of these bytes. The
* number of unallocated bytes is most likely to be accurate immediately
* after the space attributes are obtained. It is likely to be
* made inaccurate by any external I/O operations including those made on
* the system outside of this virtual machine.
*
* @return the number of unallocated bytes
*
* @throws IOException
* if an I/O error occurs
*/
public abstract long getUnallocatedSpace() throws IOException;
/**
* Tells whether or not this file store supports the file attributes
* identified by the given file attribute view.
......@@ -131,12 +173,6 @@ public abstract class FileStore {
* The {@code type} parameter is the type of the attribute view required and
* the method returns an instance of that type if supported.
*
* <p> For {@code FileStore} objects created by the default provider, then
* the file stores support the {@link FileStoreSpaceAttributeView} that
* provides access to space attributes. In that case invoking this method
* with a parameter value of {@code FileStoreSpaceAttributeView.class} will
* always return an instance of that class.
*
* @param type
* the {@code Class} object corresponding to the attribute view
*
......@@ -160,10 +196,6 @@ public abstract class FileStore {
* a {@link FileStore AttributeView} that identifies a set of file attributes.
* <i>attribute-name</i> is the name of the attribute.
*
* <p> For {@code FileStore} objects created by the default provider, then
* the file stores support the {@link FileStoreSpaceAttributeView} that
* provides access to space attributes.
*
* <p> <b>Usage Example:</b>
* Suppose we want to know if ZFS compression is enabled (assuming the "zfs"
* view is supported):
......
src/share/classes/java/nio/file/FileSystem.java
浏览文件 @ 4a8418a7
......@@ -38,8 +38,8 @@ import java.io.IOException;
* <p> The default file system, obtained by invoking the {@link FileSystems#getDefault
* FileSystems.getDefault} method, provides access to the file system that is
* accessible to the Java virtual machine. The {@link FileSystems} class defines
* methods to create file systems that provide access to other types of file
* systems.
* methods to create file systems that provide access to other types of (custom)
* file systems.
*
* <p> A file system is the factory for several types of objects:
*
......@@ -214,10 +214,9 @@ public abstract class FileSystem
* Suppose we want to print the space usage for all file stores:
* <pre>
* for (FileStore store: FileSystems.getDefault().getFileStores()) {
* FileStoreSpaceAttributes attrs = Attributes.readFileStoreSpaceAttributes(store);
* long total = attrs.totalSpace() / 1024;
* long used = (attrs.totalSpace() - attrs.unallocatedSpace()) / 1024;
* long avail = attrs.usableSpace() / 1024;
* long total = store.getTotalSpace() / 1024;
* long used = (store.getTotalSpace() - store.getUnallocatedSpace()) / 1024;
* long avail = store.getUsableSpace() / 1024;
* System.out.format("%-20s %12d %12d %12d%n", store, total, used, avail);
* }
* </pre>
......@@ -244,7 +243,20 @@ public abstract class FileSystem
public abstract Set<String> supportedFileAttributeViews();
/**
* Converts a path string to a {@code Path}.
* Converts a path string, or a sequence of strings that when joined form
* a path string, to a {@code Path}. If {@code more} does not specify any
* elements then the value of the {@code first} parameter is the path string
* to convert. If {@code more} specifies one or more elements then each
* non-empty string, including {@code first}, is considered to be a sequence
* of name elements (see {@link Path}) and is joined to form a path string.
* The details as to how the Strings are joined is provider specific but
* typically they will be joined using the {@link #getSeparator
* name-separator} as the separator. For example, if the name separator is
* "{@code /}" and {@code getPath("/foo","bar","gus")} is invoked, then the
* path string {@code "/foo/bar/gus"} is converted to a {@code Path}.
* A {@code Path} representing an empty path is returned if {@code first}
* is the empty string and {@code more} does not contain any non-empty
* strings.
*
* <p> The parsing and conversion to a path object is inherently
* implementation dependent. In the simplest case, the path string is rejected,
......@@ -270,18 +282,17 @@ public abstract class FileSystem
* index} value indicating the first position in the {@code path} parameter
* that caused the path string to be rejected.
*
* <p> Invoking this method with an empty path string throws
* {@code InvalidPathException}.
* @param first
* the path string or initial part of the path string
* @param more
* additional strings to be joined to form the path string
*
* @param path
* The path string
*
* @return A {@code Path} object
* @return the resulting {@code Path}
*
* @throws InvalidPathException
* If the path string cannot be converted
*/
public abstract Path getPath(String path);
public abstract Path getPath(String first, String... more);
/**
* Returns a {@code PathMatcher} that performs match operations on the
......@@ -290,9 +301,9 @@ public abstract class FileSystem
*
* The {@code syntaxAndPattern} parameter identifies the syntax and the
* pattern and takes the form:
* <blockquote>
* <blockquote><pre>
* <i>syntax</i><b>:</b><i>pattern</i>
* </blockquote>
* </pre></blockquote>
* where {@code ':'} stands for itself.
*
* <p> A {@code FileSystem} implementation supports the "{@code glob}" and
......@@ -409,7 +420,7 @@ public abstract class FileSystem
* @throws UnsupportedOperationException
* If the pattern syntax is not known to the implementation
*
* @see Path#newDirectoryStream(String)
* @see Files#newDirectoryStream(Path,String)
*/
public abstract PathMatcher getPathMatcher(String syntaxAndPattern);
......@@ -421,10 +432,8 @@ public abstract class FileSystem
* <p> <b>Usage Example:</b>
* Suppose we want to make "joe" the owner of a file:
* <pre>
* Path file = ...
* UserPrincipal joe = file.getFileSystem().getUserPrincipalLookupService()
* .lookupPrincipalByName("joe");
* Attributes.setOwner(file, joe);
* UserPrincipalLookupService lookupService = FileSystems.getDefault().getUserPrincipalLookupService();
* Files.setOwner(path, lookupService.lookupPrincipalByName("joe"));
* </pre>
*
* @throws UnsupportedOperationException
......
src/share/classes/java/nio/file/FileSystems.java
浏览文件 @ 4a8418a7
......@@ -164,8 +164,8 @@ public final class FileSystems {
* to the first provider instance. The third provider class is instantiated
* by invoking it with a reference to the second instance, and so on. The
* last provider to be instantiated becomes the default provider; its {@code
* getFileSystem} method is invoked with the URI {@code "file:///"} to create
* the default file system.
* getFileSystem} method is invoked with the URI {@code "file:///"} to
* get a reference to the default file system.
*
* <p> Subsequent invocations of this method return the file system that was
* returned by the first invocation.
......@@ -238,7 +238,7 @@ public final class FileSystems {
* Suppose there is a provider identified by the scheme {@code "memory"}
* installed:
* <pre>
* Map&lt;String,String&gt; env = new HashMap&lt;String,String&gt;();
* Map&lt;String,String&gt; env = new HashMap&lt;&gt;();
* env.put("capacity", "16G");
* env.put("blockSize", "4k");
* FileSystem fs = FileSystems.newFileSystem(URI.create("memory:///?name=logfs"), env);
......@@ -343,33 +343,25 @@ public final class FileSystems {
*
* <p> This method makes use of specialized providers that create pseudo file
* systems where the contents of one or more files is treated as a file
* system. The {@code file} parameter is a reference to an existing file
* and the {@code env} parameter is a map of provider specific properties to
* configure the file system.
* system.
*
* <p> This method iterates over the {@link FileSystemProvider#installedProviders()
* installed} providers. It invokes, in turn, each provider's {@link
* FileSystemProvider#newFileSystem(FileRef,Map) newFileSystem(FileRef,Map)} method.
* If a provider returns a file system then the iteration terminates
* and the file system is returned. If none of the installed providers return
* a {@code FileSystem} then an attempt is made to locate the provider using
* the given class loader. If a provider returns a file system then the lookup
* terminates and the file system is returned.
* FileSystemProvider#newFileSystem(Path,Map) newFileSystem(Path,Map)} method
* with an empty map. If a provider returns a file system then the iteration
* terminates and the file system is returned. If none of the installed
* providers return a {@code FileSystem} then an attempt is made to locate
* the provider using the given class loader. If a provider returns a file
* system then the lookup terminates and the file system is returned.
*
* @param file
* a reference to a file
* @param env
* a map of provider specific properties to configure the file system;
* may be empty
* @param path
* the path to the file
* @param loader
* the class loader to locate the provider or {@code null} to only
* attempt to locate an installed provider
*
* @return a new file system
*
* @throws IllegalArgumentException
* if the {@code env} parameter does not contain properties required
* by the provider, or a property value is invalid
* @throws ProviderNotFoundException
* if a provider supporting this file type cannot be located
* @throws ServiceConfigurationError
......@@ -380,18 +372,18 @@ public final class FileSystems {
* if a security manager is installed and it denies an unspecified
* permission
*/
public static FileSystem newFileSystem(FileRef file,
Map<String,?> env,
public static FileSystem newFileSystem(Path path,
ClassLoader loader)
throws IOException
{
if (file == null)
if (path == null)
throw new NullPointerException();
Map<String,?> env = Collections.emptyMap();
// check installed providers
for (FileSystemProvider provider: FileSystemProvider.installedProviders()) {
try {
return provider.newFileSystem(file, env);
return provider.newFileSystem(path, env);
} catch (UnsupportedOperationException uoe) {
}
}
......@@ -402,7 +394,7 @@ public final class FileSystems {
.load(FileSystemProvider.class, loader);
for (FileSystemProvider provider: sl) {
try {
return provider.newFileSystem(file, env);
return provider.newFileSystem(path, env);
} catch (UnsupportedOperationException uoe) {
}
}
......
src/share/classes/java/nio/file/FileTreeWalker.java
浏览文件 @ 4a8418a7
......@@ -69,7 +69,8 @@ class FileTreeWalker {
FileVisitResult result = walk(start,
0,
new ArrayList<AncestorDirectory>());
Objects.nonNull(result, "FileVisitor returned null");
if (result == null)
throw new NullPointerException("FileVisitor returned null");
}
/**
......@@ -102,12 +103,13 @@ class FileTreeWalker {
if (attrs == null) {
try {
try {
attrs = Attributes.readBasicFileAttributes(file, linkOptions);
attrs = Files.readAttributes(file, BasicFileAttributes.class, linkOptions);
} catch (IOException x1) {
if (followLinks) {
try {
attrs = Attributes
.readBasicFileAttributes(file, LinkOption.NOFOLLOW_LINKS);
attrs = Files.readAttributes(file,
BasicFileAttributes.class,
LinkOption.NOFOLLOW_LINKS);
} catch (IOException x2) {
exc = x2;
}
......@@ -151,7 +153,7 @@ class FileTreeWalker {
} else {
boolean isSameFile = false;
try {
isSameFile = file.isSameFile(ancestor.file());
isSameFile = Files.isSameFile(file, ancestor.file());
} catch (IOException x) {
// ignore
} catch (SecurityException x) {
......@@ -175,7 +177,7 @@ class FileTreeWalker {
// open the directory
try {
stream = file.newDirectoryStream();
stream = Files.newDirectoryStream(file);
} catch (IOException x) {
return visitor.visitFileFailed(file, x);
} catch (SecurityException x) {
......@@ -212,7 +214,11 @@ class FileTreeWalker {
} finally {
try {
stream.close();
} catch (IOException x) { }
} catch (IOException e) {
// IOException will be notified to postVisitDirectory
if (ioe == null)
ioe = e;
}
}
// invoke postVisitDirectory last
......
src/share/classes/java/nio/file/FileVisitor.java
浏览文件 @ 4a8418a7
......@@ -30,8 +30,8 @@ import java.io.IOException;
/**
* A visitor of files. An implementation of this interface is provided to the
* {@link Files#walkFileTree walkFileTree} utility method to visit each file
* in a tree.
* {@link Files#walkFileTree Files.walkFileTree} methods to visit each file in
* a file tree.
*
* <p> <b>Usage Examples:</b>
* Suppose we want to delete a file tree. In that case, each directory should
......@@ -43,19 +43,20 @@ import java.io.IOException;
* public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
* throws IOException
* {
* file.delete();
* Files.delete(file);
* return FileVisitResult.CONTINUE;
* }
* &#64;Override
* public FileVisitResult postVisitDirectory(Path dir, IOException e)
* throws IOException
* {
* if (e != null) {
* if (e == null) {
* Files.delete(dir);
* return FileVisitResult.CONTINUE;
* } else {
* // directory iteration failed
* throw e;
* }
* dir.delete();
* return FileVisitResult.CONTINUE;
* }
* });
* </pre>
......@@ -72,10 +73,12 @@ import java.io.IOException;
* public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
* throws IOException
* {
* Path targetdir = target.resolve(source.relativize(dir));
* try {
* dir.copyTo(target.resolve(source.relativize(dir)));
* Files.copy(dir, targetdir);
* } catch (FileAlreadyExistsException e) {
* // ignore
* if (!Files.isDirectory(targetdir))
* throw e;
* }
* return CONTINUE;
* }
......@@ -83,7 +86,7 @@ import java.io.IOException;
* public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
* throws IOException
* {
* file.copyTo(target.resolve(source.relativize(file)));
* Files.copy(file, target.resolve(source.relativize(file)));
* return CONTINUE;
* }
* });
......
src/share/classes/java/nio/file/LinkOption.java
浏览文件 @ 4a8418a7
......@@ -35,8 +35,8 @@ public enum LinkOption implements OpenOption, CopyOption {
/**
* Do not follow symbolic links.
*
* @see FileRef#getFileAttributeView(Class,LinkOption[])
* @see Path#copyTo
* @see Files#getFileAttributeView(Path,Class,LinkOption[])
* @see Files#copy
* @see SecureDirectoryStream#newByteChannel
*/
NOFOLLOW_LINKS;
......
src/share/classes/java/nio/file/LinkPermission.java
浏览文件 @ 4a8418a7
......@@ -59,8 +59,8 @@ import java.security.BasicPermission;
*
* @since 1.7
*
* @see Path#createLink
* @see Path#createSymbolicLink
* @see Files#createLink
* @see Files#createSymbolicLink
*/
public final class LinkPermission extends BasicPermission {
static final long serialVersionUID = -1441492453772213220L;
......
src/share/classes/java/nio/file/OpenOption.java
浏览文件 @ 4a8418a7
......@@ -29,8 +29,8 @@ package java.nio.file;
* An object that configures how to open or create a file.
*
* <p> Objects of this type are used by methods such as {@link
* Path#newOutputStream(OpenOption[]) newOutputStream}, {@link
* Path#newByteChannel newByteChannel}, {@link
* Files#newOutputStream(Path,OpenOption[]) newOutputStream}, {@link
* Files#newByteChannel newByteChannel}, {@link
* java.nio.channels.FileChannel#open FileChannel.open}, and {@link
* java.nio.channels.AsynchronousFileChannel#open AsynchronousFileChannel.open}
* when opening or creating a file.
......
src/share/classes/java/nio/file/PathMatcher.java
浏览文件 @ 4a8418a7
......@@ -32,7 +32,7 @@ package java.nio.file;
* @since 1.7
*
* @see FileSystem#getPathMatcher
* @see Path#newDirectoryStream(String)
* @see Files#newDirectoryStream(Path,String)
*/
public interface PathMatcher {
......
src/share/classes/java/nio/file/Paths.java
浏览文件 @ 4a8418a7
......@@ -39,14 +39,27 @@ public final class Paths {
private Paths() { }
/**
* Constructs a {@code Path} by converting the given path string.
* Converts a path string, or a sequence of strings that when joined form
* a path string, to a {@code Path}. If {@code more} does not specify any
* elements then the value of the {@code first} parameter is the path string
* to convert. If {@code more} specifies one or more elements then each
* non-empty string, including {@code first}, is considered to be a sequence
* of name elements (see {@link Path}) and is joined to form a path string.
* The details as to how the Strings are joined is provider specific but
* typically they will be joined using the {@link FileSystem#getSeparator
* name-separator} as the separator. For example, if the name separator is
* "{@code /}" and {@code getPath("/foo","bar","gus")} is invoked, then the
* path string {@code "/foo/bar/gus"} is converted to a {@code Path}.
* A {@code Path} representing an empty path is returned if {@code first}
* is the empty string and {@code more} does not contain any non-empty
* strings.
*
* <p> The {@code Path} is obtained by invoking the {@link FileSystem#getPath
* getPath} method of the {@link FileSystems#getDefault default} {@link
* FileSystem}.
*
* <p> Note that while this method is very convenient, using it will
* imply an assumed reference to the default FileSystem and limit the
* <p> Note that while this method is very convenient, using it will imply
* an assumed reference to the default {@code FileSystem} and limit the
* utility of the calling code. Hence it should not be used in library code
* intended for flexible reuse. A more flexible alternative is to use an
* existing {@code Path} instance as an anchor, such as:
......@@ -55,8 +68,10 @@ public final class Paths {
* Path path = dir.resolve("file");
* </pre>
*
* @param path
* the path string to convert
* @param first
* the path string or initial part of the path string
* @param more
* additional strings to be joined to form the path string
*
* @return the resulting {@code Path}
*
......@@ -65,8 +80,8 @@ public final class Paths {
*
* @see FileSystem#getPath
*/
public static Path get(String path) {
return FileSystems.getDefault().getPath(path);
public static Path get(String first, String... more) {
return FileSystems.getDefault().getPath(first, more);
}
/**
......
src/share/classes/java/nio/file/SecureDirectoryStream.java
浏览文件 @ 4a8418a7
......@@ -43,7 +43,7 @@ import java.io.IOException;
*
* <p> A {@code SecureDirectoryStream} requires corresponding support from the
* underlying operating system. Where an implementation supports this features
* then the {@code DirectoryStream} returned by the {@link Path#newDirectoryStream
* then the {@code DirectoryStream} returned by the {@link Files#newDirectoryStream
* newDirectoryStream} method will be a {@code SecureDirectoryStream} and must
* be cast to that type in order to invoke the methods defined by this interface.
*
......@@ -56,20 +56,15 @@ import java.io.IOException;
* @since 1.7
*/
public abstract class SecureDirectoryStream<T>
implements DirectoryStream<T>
public interface SecureDirectoryStream<T>
extends DirectoryStream<T>
{
/**
* Initialize a new instance of this class.
*/
protected SecureDirectoryStream() { }
/**
* Opens the directory identified by the given path, returning a {@code
* SecureDirectoryStream} to iterate over the entries in the directory.
*
* <p> This method works in exactly the manner specified by the {@link
* Path#newDirectoryStream() newDirectoryStream} method for the case that
* Files#newDirectoryStream(Path) newDirectoryStream} method for the case that
* the {@code path} parameter is an {@link Path#isAbsolute absolute} path.
* When the parameter is a relative path then the directory to open is
* relative to this open directory. The {@link
......@@ -99,8 +94,7 @@ public abstract class SecureDirectoryStream<T>
* installed, the {@link SecurityManager#checkRead(String) checkRead}
* method is invoked to check read access to the directory.
*/
public abstract SecureDirectoryStream<T> newDirectoryStream(T path,
LinkOption... options)
SecureDirectoryStream<T> newDirectoryStream(T path, LinkOption... options)
throws IOException;
/**
......@@ -108,11 +102,11 @@ public abstract class SecureDirectoryStream<T>
* channel to access the file.
*
* <p> This method works in exactly the manner specified by the {@link
* Path#newByteChannel Path.newByteChannel} method for the
* Files#newByteChannel Files.newByteChannel} method for the
* case that the {@code path} parameter is an {@link Path#isAbsolute absolute}
* path. When the parameter is a relative path then the file to open or
* create is relative to this open directory. In addition to the options
* defined by the {@code Path.newByteChannel} method, the {@link
* defined by the {@code Files.newByteChannel} method, the {@link
* LinkOption#NOFOLLOW_LINKS NOFOLLOW_LINKS} option may be used to
* ensure that this method fails if the file is a symbolic link.
*
......@@ -149,15 +143,15 @@ public abstract class SecureDirectoryStream<T>
* checkWrite} method is invoked to check write access to the path
* if the file is opened for writing.
*/
public abstract SeekableByteChannel newByteChannel(T path,
Set<? extends OpenOption> options,
FileAttribute<?>... attrs)
SeekableByteChannel newByteChannel(T path,
Set<? extends OpenOption> options,
FileAttribute<?>... attrs)
throws IOException;
/**
* Deletes a file.
*
* <p> Unlike the {@link Path#delete delete()} method, this method does
* <p> Unlike the {@link Files#delete delete()} method, this method does
* not first examine the file to determine if the file is a directory.
* Whether a directory is deleted by this method is system dependent and
* therefore not specified. If the file is a symbolic link, then the link
......@@ -179,12 +173,12 @@ public abstract class SecureDirectoryStream<T>
* installed, the {@link SecurityManager#checkDelete(String) checkDelete}
* method is invoked to check delete access to the file
*/
public abstract void deleteFile(T path) throws IOException;
void deleteFile(T path) throws IOException;
/**
* Deletes a directory.
*
* <p> Unlike the {@link Path#delete delete()} method, this method
* <p> Unlike the {@link Files#delete delete()} method, this method
* does not first examine the file to determine if the file is a directory.
* Whether non-directories are deleted by this method is system dependent and
* therefore not specified. When the parameter is a relative path then the
......@@ -207,12 +201,12 @@ public abstract class SecureDirectoryStream<T>
* installed, the {@link SecurityManager#checkDelete(String) checkDelete}
* method is invoked to check delete access to the directory
*/
public abstract void deleteDirectory(T path) throws IOException;
void deleteDirectory(T path) throws IOException;
/**
* Move a file from this directory to another directory.
*
* <p> This method works in a similar manner to {@link Path#moveTo moveTo}
* <p> This method works in a similar manner to {@link Files#move move}
* method when the {@link StandardCopyOption#ATOMIC_MOVE ATOMIC_MOVE} option
* is specified. That is, this method moves a file as an atomic file system
* operation. If the {@code srcpath} parameter is an {@link Path#isAbsolute
......@@ -247,7 +241,7 @@ public abstract class SecureDirectoryStream<T>
* method is invoked to check write access to both the source and
* target file.
*/
public abstract void move(T srcpath, SecureDirectoryStream<T> targetdir, T targetpath)
void move(T srcpath, SecureDirectoryStream<T> targetdir, T targetpath)
throws IOException;
/**
......@@ -273,7 +267,7 @@ public abstract class SecureDirectoryStream<T>
* this directory stream, or {@code null} if the attribute view
* type is not available
*/
public abstract <V extends FileAttributeView> V getFileAttributeView(Class<V> type);
<V extends FileAttributeView> V getFileAttributeView(Class<V> type);
/**
* Returns a new file attribute view to access the file attributes of a file
......@@ -306,7 +300,7 @@ public abstract class SecureDirectoryStream<T>
* type is not available
*
*/
public abstract <V extends FileAttributeView> V getFileAttributeView(T path,
Class<V> type,
LinkOption... options);
<V extends FileAttributeView> V getFileAttributeView(T path,
Class<V> type,
LinkOption... options);
}
src/share/classes/java/nio/file/WatchEvent.java
浏览文件 @ 4a8418a7
......@@ -44,7 +44,7 @@ package java.nio.file;
* @since 1.7
*/
public abstract class WatchEvent<T> {
public interface WatchEvent<T> {
/**
* An event kind, for the purposes of identification.
......@@ -64,11 +64,6 @@ public abstract class WatchEvent<T> {
Class<T> type();
}
/**
* Initializes a new instance of this class.
*/
protected WatchEvent() { }
/**
* An event modifier that qualifies how a {@link Watchable} is registered
* with a {@link WatchService}.
......@@ -90,7 +85,7 @@ public abstract class WatchEvent<T> {
*
* @return the event kind
*/
public abstract Kind<T> kind();
Kind<T> kind();
/**
* Returns the event count. If the event count is greater than {@code 1}
......@@ -98,7 +93,7 @@ public abstract class WatchEvent<T> {
*
* @return the event count
*/
public abstract int count();
int count();
/**
* Returns the context for the event.
......@@ -112,5 +107,5 @@ public abstract class WatchEvent<T> {
*
* @return the event context; may be {@code null}
*/
public abstract T context();
T context();
}
src/share/classes/java/nio/file/WatchKey.java
浏览文件 @ 4a8418a7
......@@ -81,11 +81,7 @@ import java.util.List;
* @since 1.7
*/
public abstract class WatchKey {
/**
* Initializes a new instance of this class.
*/
protected WatchKey() { }
public interface WatchKey {
/**
* Tells whether or not this watch key is valid.
......@@ -95,7 +91,7 @@ public abstract class WatchKey {
*
* @return {@code true} if, and only if, this watch key is valid
*/
public abstract boolean isValid();
boolean isValid();
/**
* Retrieves and removes all pending events for this watch key, returning
......@@ -105,7 +101,7 @@ public abstract class WatchKey {
*
* @return the list of the events retrieved; may be empty
*/
public abstract List<WatchEvent<?>> pollEvents();
List<WatchEvent<?>> pollEvents();
/**
* Resets this watch key.
......@@ -121,7 +117,7 @@ public abstract class WatchKey {
* {@code false} if the watch key could not be reset because it is
* no longer {@link #isValid valid}
*/
public abstract boolean reset();
boolean reset();
/**
* Cancels the registration with the watch service. Upon return the watch key
......@@ -134,5 +130,21 @@ public abstract class WatchKey {
* <p> If this watch key has already been cancelled then invoking this
* method has no effect. Once cancelled, a watch key remains forever invalid.
*/
public abstract void cancel();
void cancel();
/**
* Returns the object for which this watch key was created. This method will
* continue to return the object even after the key is cancelled.
*
* <p> As the {@code WatchService} is intended to map directly on to the
* native file event notification facility (where available) then many of
* details on how registered objects are watched is highly implementation
* specific. When watching a directory for changes for example, and the
* directory is moved or renamed in the file system, there is no guarantee
* that the watch key will be cancelled and so the object returned by this
* method may no longer be a valid path to the directory.
*
* @return the object for which this watch key was created
*/
//T watchable();
}
src/share/classes/java/nio/file/attribute/DosFileAttributeView.java
浏览文件 @ 4a8418a7
......@@ -65,12 +65,12 @@ import java.io.IOException;
* </table>
* </blockquote>
*
* <p> The {@link java.nio.file.FileRef#getAttribute getAttribute} method may
* <p> The {@link java.nio.file.Files#getAttribute getAttribute} method may
* be used to read any of these attributes, or any of the attributes defined by
* {@link BasicFileAttributeView} as if by invoking the {@link #readAttributes
* readAttributes()} method.
*
* <p> The {@link java.nio.file.FileRef#setAttribute setAttribute} method may
* <p> The {@link java.nio.file.Files#setAttribute setAttribute} method may
* be used to update the file's last modified time, last access time or create
* time attributes as defined by {@link BasicFileAttributeView}. It may also be
* used to update the DOS attributes as if by invoking the {@link #setReadOnly
......
src/share/classes/java/nio/file/attribute/FileAttribute.java
浏览文件 @ 4a8418a7
......@@ -28,8 +28,8 @@ package java.nio.file.attribute;
/**
* An object that encapsulates the value of a file attribute that can be set
* atomically when creating a new file or directory by invoking the {@link
* java.nio.file.Path#createFile createFile} or {@link
* java.nio.file.Path#createDirectory createDirectory} methods.
* java.nio.file.Files#createFile createFile} or {@link
* java.nio.file.Files#createDirectory createDirectory} methods.
*
* @param <T> The type of the file attribute value
*
......
src/share/sample/nio/file/Copy.java
浏览文件 @ 4a8418a7
此差异已折叠。
src/share/sample/nio/file/Xdd.java
浏览文件 @ 4a8418a7
此差异已折叠。
test/demo/zipfs/basic.sh
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/io/File/IsHidden.java
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/io/File/SetAccess.java
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/io/File/SymLinks.java
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/nio/file/Files/BytesAndLines.java 0 → 100644
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/nio/file/Files/Misc.java
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/nio/file/Files/TemporaryFiles.java 0 → 100644
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/nio/file/Path/Misc.java
浏览文件 @ 4a8418a7
此差异已折叠。
test/java/nio/file/TestUtil.java
浏览文件 @ 4a8418a7
此差异已折叠。
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