java.io
Class WinNTFileSystem

java.lang.Object
  java.io.FileSystem
      java.io.Win32FileSystem
          java.io.WinNTFileSystem

class WinNTFileSystem

extends Win32FileSystem

Unicode-aware FileSystem for Windows NT/2000.

Since:

1.4

Author:

Konstantin Kladko

Field Summary

static int	BA_DIRECTORY
static int	BA_EXISTS
static int	BA_HIDDEN
static int	BA_REGULAR
(package private) static boolean	useCanonCaches
(package private) static boolean	useCanonPrefixCache

Constructor Summary

(package private)

WinNTFileSystem()

Method Summary

String	canonicalize(String path)
protected String	canonicalize0(String path)
protected String	canonicalizeWithPrefix(String canonicalPrefix, String filename)
protected String	canonicalizeWithPrefix0(String canonicalPrefix, String pathWithCanonicalPrefix)
boolean	checkAccess(File f, boolean write) Check whether the file or directory denoted by the given abstract pathname may be accessed by this process.
int	compare(File f1, File f2) Compare two abstract pathnames lexicographically.
boolean	createDirectory(File f) Create a new directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.
boolean	createFileExclusively(String path) Create a new empty file with the given pathname.
boolean	delete(File f) Delete the file or directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.
boolean	deleteOnExit(File f) Arrange for the file or directory denoted by the given abstract pathname to be deleted when the VM exits, returning true if and only if the operation succeeds.
String	fromURIPath(String path) Post-process the given URI path string if necessary.
int	getBooleanAttributes(File f) Return the simple boolean attributes for the file or directory denoted by the given abstract pathname, or zero if it does not exist or some other I/O error occurs.
String	getDefaultParent() Return the parent pathname string to be used when the parent-directory argument in one of the two-argument File constructors is the empty pathname.
(package private) String	getDriveDirectory(int drive)
static FileSystem	getFileSystem() Return the FileSystem object representing this platform's local filesystem.
long	getLastModifiedTime(File f) Return the time at which the file or directory denoted by the given abstract pathname was last modified, or zero if it does not exist or some other I/O error occurs.
long	getLength(File f) Return the length in bytes of the file denoted by the given abstract pathname, or zero if it does not exist, is a directory, or some other I/O error occurs.
char	getPathSeparator() Return the local filesystem's path-separator character.
char	getSeparator() Return the local filesystem's name-separator character.
int	hashCode(File f) Compute the hash code of an abstract pathname.
private static void	initIDs()
boolean	isAbsolute(File f) Tell whether or not the given abstract pathname is absolute.
String[]	list(File f) List the elements of the directory denoted by the given abstract pathname.
File[]	listRoots() List the available filesystem roots.
String	normalize(String path) Convert the given pathname string to normal form.
(package private) static String	parentOrNull(String path)
int	prefixLength(String path) Compute the length of this pathname string's prefix.
boolean	rename(File f1, File f2) Rename the file or directory denoted by the first abstract pathname to the second abstract pathname, returning true if and only if the operation succeeds.
String	resolve(File f) Resolve the given abstract pathname into absolute form.
String	resolve(String parent, String child) Resolve the child pathname string against the parent.
boolean	setLastModifiedTime(File f, long time) Set the last-modified time of the file or directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.
boolean	setReadOnly(File f) Mark the file or directory denoted by the given abstract pathname as read-only, returning true if and only if the operation succeeds.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BA_EXISTS

public static final int BA_EXISTS

See Also:

Constant Field Values

BA_REGULAR

public static final int BA_REGULAR

See Also:

Constant Field Values

BA_DIRECTORY

public static final int BA_DIRECTORY

See Also:

Constant Field Values

BA_HIDDEN

public static final int BA_HIDDEN

See Also:

Constant Field Values

useCanonCaches

static boolean useCanonCaches

useCanonPrefixCache

static boolean useCanonPrefixCache

Constructor Detail

WinNTFileSystem

WinNTFileSystem()

Method Detail

canonicalize0

protected String canonicalize0(String path)
                        throws IOException

Overrides:

canonicalize0 in class Win32FileSystem

Throws:

IOException

canonicalizeWithPrefix0

protected String canonicalizeWithPrefix0(String canonicalPrefix,
                                         String pathWithCanonicalPrefix)
                                  throws IOException

Overrides:

canonicalizeWithPrefix0 in class Win32FileSystem

Throws:

IOException

getBooleanAttributes

public int getBooleanAttributes(File f)

Description copied from class: FileSystem

Return the simple boolean attributes for the file or directory denoted by the given abstract pathname, or zero if it does not exist or some other I/O error occurs.

Overrides:

getBooleanAttributes in class Win32FileSystem

checkAccess

public boolean checkAccess(File f,
                           boolean write)

Description copied from class: FileSystem

Check whether the file or directory denoted by the given abstract pathname may be accessed by this process. If the second argument is false, then a check for read access is made; if the second argument is true, then a check for write (not read-write) access is made. Return false if access is denied or an I/O error occurs.

Overrides:

checkAccess in class Win32FileSystem

getLastModifiedTime

public long getLastModifiedTime(File f)

Description copied from class: FileSystem

Return the time at which the file or directory denoted by the given abstract pathname was last modified, or zero if it does not exist or some other I/O error occurs.

Overrides:

getLastModifiedTime in class Win32FileSystem

getLength

public long getLength(File f)

Description copied from class: FileSystem

Return the length in bytes of the file denoted by the given abstract pathname, or zero if it does not exist, is a directory, or some other I/O error occurs.

Overrides:

getLength in class Win32FileSystem

createFileExclusively

public boolean createFileExclusively(String path)
                              throws IOException

Description copied from class: FileSystem

Create a new empty file with the given pathname. Return true if the file was created and false if a file or directory with the given pathname already exists. Throw an IOException if an I/O error occurs.

Overrides:

createFileExclusively in class Win32FileSystem

Throws:

IOException

delete

public boolean delete(File f)

Description copied from class: FileSystem

Delete the file or directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.

Overrides:

delete in class Win32FileSystem

deleteOnExit

public boolean deleteOnExit(File f)

Description copied from class: FileSystem

Arrange for the file or directory denoted by the given abstract pathname to be deleted when the VM exits, returning true if and only if the operation succeeds.

Overrides:

deleteOnExit in class Win32FileSystem

list

public String[] list(File f)

Description copied from class: FileSystem

List the elements of the directory denoted by the given abstract pathname. Return an array of strings naming the elements of the directory if successful; otherwise, return null.

Overrides:

list in class Win32FileSystem

createDirectory

public boolean createDirectory(File f)

Description copied from class: FileSystem

Create a new directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.

Overrides:

createDirectory in class Win32FileSystem

rename

public boolean rename(File f1,
                      File f2)

Description copied from class: FileSystem

Rename the file or directory denoted by the first abstract pathname to the second abstract pathname, returning true if and only if the operation succeeds.

Overrides:

rename in class Win32FileSystem

setLastModifiedTime

public boolean setLastModifiedTime(File f,
                                   long time)

Description copied from class: FileSystem

Set the last-modified time of the file or directory denoted by the given abstract pathname, returning true if and only if the operation succeeds.

Overrides:

setLastModifiedTime in class Win32FileSystem

setReadOnly

public boolean setReadOnly(File f)

Description copied from class: FileSystem

Mark the file or directory denoted by the given abstract pathname as read-only, returning true if and only if the operation succeeds.

Overrides:

setReadOnly in class Win32FileSystem

getDriveDirectory

String getDriveDirectory(int drive)

Overrides:

getDriveDirectory in class Win32FileSystem

initIDs

private static void initIDs()

getSeparator

public char getSeparator()

Description copied from class: FileSystem

Return the local filesystem's name-separator character.

Specified by:

getSeparator in class FileSystem

getPathSeparator

public char getPathSeparator()

Description copied from class: FileSystem

Return the local filesystem's path-separator character.

Specified by:

getPathSeparator in class FileSystem

normalize

public String normalize(String path)

Description copied from class: FileSystem

Convert the given pathname string to normal form. If the string is already in normal form then it is simply returned.

Specified by:

normalize in class FileSystem

prefixLength

public int prefixLength(String path)

Description copied from class: FileSystem

Compute the length of this pathname string's prefix. The pathname string must be in normal form.

Specified by:

prefixLength in class FileSystem

resolve

public String resolve(String parent,
                      String child)

Description copied from class: FileSystem

Resolve the child pathname string against the parent. Both strings must be in normal form, and the result will be in normal form.

Specified by:

resolve in class FileSystem

getDefaultParent

public String getDefaultParent()

Description copied from class: FileSystem

Return the parent pathname string to be used when the parent-directory argument in one of the two-argument File constructors is the empty pathname.

Specified by:

getDefaultParent in class FileSystem

fromURIPath

public String fromURIPath(String path)

Description copied from class: FileSystem

Post-process the given URI path string if necessary. This is used on win32, e.g., to transform "/c:/foo" into "c:/foo". The path string still has slash separators; code in the File class will translate them after this method returns.

Specified by:

fromURIPath in class FileSystem

isAbsolute

public boolean isAbsolute(File f)

Description copied from class: FileSystem

Tell whether or not the given abstract pathname is absolute.

Specified by:

isAbsolute in class FileSystem

resolve

public String resolve(File f)

Description copied from class: FileSystem

Resolve the given abstract pathname into absolute form. Invoked by the getAbsolutePath and getCanonicalPath methods in the File class.

Specified by:

resolve in class FileSystem

canonicalize

public String canonicalize(String path)
                    throws IOException

Specified by:

canonicalize in class FileSystem

Throws:

IOException

canonicalizeWithPrefix

protected String canonicalizeWithPrefix(String canonicalPrefix,
                                        String filename)
                                 throws IOException

Throws:

IOException

parentOrNull

static String parentOrNull(String path)

listRoots

public File[] listRoots()

Description copied from class: FileSystem

List the available filesystem roots.

Specified by:

listRoots in class FileSystem

compare

public int compare(File f1,
                   File f2)

Description copied from class: FileSystem

Compare two abstract pathnames lexicographically.

Specified by:

compare in class FileSystem

hashCode

public int hashCode(File f)

Description copied from class: FileSystem

Compute the hash code of an abstract pathname.

Specified by:

hashCode in class FileSystem

getFileSystem

public static FileSystem getFileSystem()

Return the FileSystem object representing this platform's local filesystem.