Package org.jruby.util

Class EmptyFileResource

java.lang.Object

org.jruby.util.EmptyFileResource

All Implemented Interfaces:

FileResource

class EmptyFileResource
extends Object
implements FileResource

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final EmptyFileResource	INSTANCE

Constructor Summary

Constructors

Constructor	Description
EmptyFileResource()

Method Summary

Modifier and Type	Method	Description
String	absolutePath()
boolean	canExecute()
String	canonicalPath()
boolean	canRead()
boolean	canWrite()
static EmptyFileResource	create(String pathname)
int	errno()
boolean	exists()
boolean	isDirectory()
boolean	isFile()
boolean	isSymLink()
long	lastModified()
long	length()
String[]	list()
jnr.posix.FileStat	lstat()
Channel	openChannel(int flags, int perm)
InputStream	openInputStream()	Opens a new input stream to read the contents of a resource and returns it.
String	path()
jnr.posix.FileStat	stat()
String	toString()
<T> T	unwrap(Class<T> type)	Unwrap the resource backend (replacement for FileResource.hackyGetJRubyFile()).

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jruby.util.FileResource

hackyGetJRubyFile, inputStream, isNull, openChannel

Field Details

INSTANCE

static final EmptyFileResource INSTANCE

Constructor Details

EmptyFileResource

EmptyFileResource()

Method Details

create

public static EmptyFileResource create(String pathname)

absolutePath

public String absolutePath()

Specified by:

absolutePath in interface FileResource

canonicalPath

public String canonicalPath()

Specified by:

canonicalPath in interface FileResource

path

public String path()

Specified by:

path in interface FileResource

exists

public boolean exists()

Specified by:

exists in interface FileResource

isDirectory

public boolean isDirectory()

Specified by:

isDirectory in interface FileResource

isFile

public boolean isFile()

Specified by:

isFile in interface FileResource

canExecute

public boolean canExecute()

Specified by:

canExecute in interface FileResource

canRead

public boolean canRead()

Specified by:

canRead in interface FileResource

canWrite

public boolean canWrite()

Specified by:

canWrite in interface FileResource

isSymLink

public boolean isSymLink()

Specified by:

isSymLink in interface FileResource

list

public String[] list()

Specified by:

list in interface FileResource

See Also:

• File.list()

lastModified

public long lastModified()

Specified by:

lastModified in interface FileResource

length

public long length()

Specified by:

length in interface FileResource

stat

public jnr.posix.FileStat stat()

Specified by:

stat in interface FileResource

lstat

public jnr.posix.FileStat lstat()

Specified by:

lstat in interface FileResource

errno

public int errno()

Specified by:

errno in interface FileResource

openInputStream

public InputStream openInputStream()
                            throws IOException

Description copied from interface: FileResource

Opens a new input stream to read the contents of a resource and returns it. Note that implementations may be allocating native memory for the stream, so callers need to close this when they are done with it. users of this method should follow the pattern: close the stream where you open it.

Specified by:

openInputStream in interface FileResource

Returns:

InputStream

Throws:

IOException

openChannel

public Channel openChannel(int flags,
 int perm)
                    throws IOException

Specified by:

openChannel in interface FileResource

Throws:

IOException

unwrap

public <T> T unwrap(Class<T> type)
             throws UnsupportedOperationException

Description copied from interface: FileResource

Unwrap the resource backend (replacement for FileResource.hackyGetJRubyFile()).

Specified by:

unwrap in interface FileResource

Returns:

backend if supported

Throws:

UnsupportedOperationException

toString

public String toString()

Overrides:

toString in class Object