org.python.modules._io.PyFileIO

All Implemented Interfaces:: Serializable, FinalizableBuiltin, Traverseproc

Direct Known Subclasses:: PyFileIODerived

public class PyFileIO extends PyRawIOBase

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.python.core.PyObject
PyObject.ConversionException
Field Summary

Fields

Modifier and Type

Field

Description

final boolean

closefd

Whether to close the underlying stream on closing this object.

final PyString

mode

The mode as a PyString based on readable and writable

static final PyType

TYPE

Fields inherited from class org.python.modules._io.PyRawIOBase
read_doc, readall_doc, readinto_doc, write_doc

Fields inherited from class org.python.modules._io.PyIOBase
close_doc, closed_doc, fileno_doc, flush_doc, isatty_doc, readable_doc, readline_doc, readlines_doc, seek_doc, seekable_doc, tell_doc, truncate_doc, writable_doc, writelines_doc

Fields inherited from class org.python.core.PyObject
gcMonitorGlobal
Constructor Summary

Constructors

Constructor

Description

PyFileIO(PyObject file, OpenMode mode, boolean closefd)

Construct an open _io.FileIO starting with an object that may be a file name or a file descriptor (actually a RawIOBase).

PyFileIO(PyType subtype, PyObject file, OpenMode mode, boolean closefd)

Construct an open _io.FileIO for a sub-class constructor starting with an object that may be a file name or a file descriptor (actually a RawIOBase).
Method Summary

Modifier and Type

Method

Description

void

close()

Close the underlying ioDelegate only if closefd was specified as (or defaulted to) True.

PyObject

fileno()

Return a file descriptor for the stream.

void

flush()

Flush write buffers, or no-op for read-only and non-blocking streams.

boolean

isatty()

Is the stream known to be an interactive console?

final void

mode_readonly(PyString value)

boolean

readable()

Is the stream readable?

PyObject

readinto(PyObject buf)

Read up to len(b) bytes into bytearray b and return the number of bytes read.

long

seek(long pos, int whence)

Position the read or write pointer at a given byte offset pos relative to a position indicated by whence.

boolean

seekable()

Is the stream capable of positioning the read/write pointer?

String

toString()

long

truncate()

Truncate file to size bytes to the current position (as reported by tell()).

long

truncate(long size)

Truncate file to size bytes.

boolean

writable()

Is the stream writable?

PyObject

write(PyObject buf)

Write the given bytes or bytearray object to the underlying raw stream and return the number of bytes written.

Methods inherited from class org.python.modules._io.PyRawIOBase
read, readall

Methods inherited from class org.python.modules._io.PyIOBase
__del_builtin__, __enter__, __exit__, __iter__, __iternext__, _checkClosed, _checkClosed, _checkReadable, _checkReadable, _checkSeekable, _checkSeekable, _checkWritable, _checkWritable, closed, closed_readonly, fastGetDict, next, readline, readline, readlines, refersDirectlyTo, seek, tell, traverse, writelines

Methods inherited from class org.python.core.PyObject
__abs__, __add__, __and__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __cmp__, __coerce__, __coerce_ex__, __complex__, __contains__, __delattr__, __delattr__, __delete__, __delitem__, __delitem__, __delslice__, __delslice__, __dir__, __div__, __divmod__, __ensure_finalizer__, __eq__, __findattr__, __findattr__, __findattr_ex__, __finditem__, __finditem__, __finditem__, __float__, __floordiv__, __format__, __ge__, __get__, __getattr__, __getattr__, __getitem__, __getitem__, __getnewargs__, __getslice__, __getslice__, __gt__, __hash__, __hex__, __iadd__, __iand__, __idiv__, __idivmod__, __ifloordiv__, __ilshift__, __imod__, __imul__, __index__, __int__, __invert__, __ior__, __ipow__, __irshift__, __isub__, __itruediv__, __ixor__, __le__, __len__, __long__, __lshift__, __lt__, __mod__, __mul__, __ne__, __neg__, __nonzero__, __not__, __oct__, __or__, __pos__, __pow__, __pow__, __radd__, __rand__, __rdiv__, __rdivmod__, __reduce__, __reduce_ex__, __reduce_ex__, __repr__, __rfloordiv__, __rlshift__, __rmod__, __rmul__, __ror__, __rpow__, __rrshift__, __rshift__, __rsub__, __rtruediv__, __rxor__, __set__, __setattr__, __setattr__, __setitem__, __setitem__, __setitem__, __setslice__, __setslice__, __str__, __sub__, __tojava__, __truediv__, __trunc__, __unicode__, __xor__, _add, _and, _callextra, _cmp, _div, _divmod, _doget, _doget, _doset, _eq, _floordiv, _ge, _gt, _iadd, _iand, _idiv, _idivmod, _ifloordiv, _ilshift, _imod, _imul, _in, _ior, _ipow, _irshift, _is, _isnot, _isub, _itruediv, _ixor, _jcall, _jcallexc, _jthrow, _le, _lshift, _lt, _mod, _mul, _ne, _notin, _or, _pow, _rshift, _sub, _truediv, _xor, asDouble, asIndex, asIndex, asInt, asInt, asIterable, asLong, asLong, asName, asName, asString, asString, asStringOrNull, asStringOrNull, bit_length, conjugate, delDict, delType, dispatch__init__, equals, fastGetClass, getDict, getType, hashCode, implementsDescrDelete, implementsDescrGet, implementsDescrSet, invoke, invoke, invoke, invoke, invoke, invoke, isCallable, isDataDescr, isIndex, isInteger, isMappingType, isNumberType, isSequenceType, noAttributeError, object___subclasshook__, readonlyAttributeError, setDict, setType

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Field Details
- TYPE
  
  public static final PyType TYPE
- closefd
  
  public final boolean closefd
  
  Whether to close the underlying stream on closing this object.
- mode
  
  public final PyString mode
  
  The mode as a PyString based on readable and writable
Constructor Details
- PyFileIO
  
  public PyFileIO(PyObject file, OpenMode mode, boolean closefd)
  
  Construct an open _io.FileIO starting with an object that may be a file name or a file descriptor (actually a RawIOBase). Only the relevant flags within the parsed mode object are consulted (so that flags meaningful to this sub-class need not be processed out).
  
  Parameters:
  
  file - path or descriptor on which this should be constructed
  
  mode - type of access specified
  
  closefd - if false, do not close fd on call to close()
- PyFileIO
  
  public PyFileIO(PyType subtype, PyObject file, OpenMode mode, boolean closefd)
  
  Construct an open _io.FileIO for a sub-class constructor starting with an object that may be a file name or a file descriptor (actually a RawIOBase). Only the relevant flags within the parsed mode object are consulted (so that flags meaningful to this sub-class need not be processed out).
  
  Parameters:
  
  subtype - for which construction is occurring
  
  file - path or descriptor on which this should be constructed
  
  mode - type of access specified
  
  closefd - if false, do not close file on call to close()
Method Details
- mode_readonly
  
  public final void mode_readonly(PyString value)
- readinto
  
  public PyObject readinto(PyObject buf)
  
  Description copied from class: PyRawIOBase
  
  Read up to len(b) bytes into bytearray b and return the number of bytes read. If the object is in non-blocking mode and no bytes are available, None is returned.";
  
  Overrides:
  
  readinto in class PyRawIOBase
  
  Parameters:
  
  buf - byte array to try to fill
  
  Returns:
  
  number of bytes actually read or Py.None (when a non-blocking source is not ready with further data)
- write
  
  public PyObject write(PyObject buf)
  
  Description copied from class: PyRawIOBase
  
  Write the given bytes or bytearray object to the underlying raw stream and return the number of bytes written.
  
  Overrides:
  
  write in class PyRawIOBase
  
  Parameters:
  
  buf - buffer of bytes to be written
  
  Returns:
  
  the number of bytes written
- seek
  
  public long seek(long pos, int whence)
  
  Description copied from class: PyIOBase
  Position the read or write pointer at a given byte offset pos relative to a position indicated by whence.
  
  If whence=0, the position will be set to pos bytes.
  
  If whence=1 the position will be set to the current position plus pos.
  
  If whence=2 the position will be set to the stream size plus pos (and usually pos<=0).
  Overrides:
  
  seek in class PyIOBase
  
  Parameters:
  
  pos - relative to the specified point
  
  whence - 0=from start, 1=from here, 2=from end
  
  Returns:
  
  the new current position
- truncate
  
  public long truncate()
  
  Description copied from class: PyIOBase
  
  Truncate file to size bytes to the current position (as reported by tell()).
  
  Overrides:
  
  truncate in class PyIOBase
  
  Returns:
  
  the new size
- truncate
  
  public long truncate(long size)
  
  Description copied from class: PyIOBase
  
  Truncate file to size bytes.
  
  Overrides:
  
  truncate in class PyIOBase
  
  Parameters:
  
  size - requested for stream
  
  Returns:
  
  the new size
- close
  
  public void close()
  
  Close the underlying ioDelegate only if closefd was specified as (or defaulted to) True.
  
  Overrides:
  
  close in class PyIOBase
- seekable
  
  public boolean seekable()
  
  Description copied from class: PyIOBase
  
  Is the stream capable of positioning the read/write pointer?
  
  Overrides:
  
  seekable in class PyIOBase
  
  Returns:
  
  True if may be positioned
- readable
  
  public boolean readable() throws PyException
  
  Description copied from class: PyIOBase
  
  Is the stream readable?
  
  Overrides:
  
  readable in class PyIOBase
  
  Returns:
  
  true if readable
  
  Throws:
  
  PyException - ValueError if the object is closed to client operations
- writable
  
  public boolean writable() throws PyException
  
  Description copied from class: PyIOBase
  
  Is the stream writable?
  
  Overrides:
  
  writable in class PyIOBase
  
  Returns:
  
  true if writable
  
  Throws:
  
  PyException - ValueError if the object is closed to client operations
- fileno
  
  public PyObject fileno()
  
  Description copied from class: PyIOBase
  
  Return a file descriptor for the stream. A CPython file descriptor is an int, but this is not the natural choice in Jython, since Java has no such convention of using integers. File descriptors should be passed around opaquely, so their actual type is irrelevant, as long as (say) _jyio.open(PyObject[], String[]) accepts the type that RawIOBase.fileno() returns.
  
  Overrides:
  
  fileno in class PyIOBase
  
  Returns:
  
  a file descriptor (as opaque object)
- isatty
  
  public boolean isatty()
  
  Description copied from class: PyIOBase
  
  Is the stream known to be an interactive console? This relies on the ability of the underlying stream to know, which is not always possible.
  
  Overrides:
  
  isatty in class PyIOBase
  
  Returns:
  
  true if a console: false if not or we can't tell
- flush
  
  public void flush()
  
  Description copied from class: PyIOBase
  
  Flush write buffers, or no-op for read-only and non-blocking streams. Irrespective of the concrete type of the i/o object, locally-buffered write data is written downstream. Whether the downstream in object is also flushed depends upon the specific type of this object.
  
  Overrides:
  
  flush in class PyIOBase
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class PyObject

Class PyFileIO

Nested Class Summary

Nested classes/interfaces inherited from class org.python.core.PyObject

Field Summary

Fields inherited from class org.python.modules._io.PyRawIOBase

Fields inherited from class org.python.modules._io.PyIOBase

Fields inherited from class org.python.core.PyObject

Constructor Summary

Method Summary

Methods inherited from class org.python.modules._io.PyRawIOBase

Methods inherited from class org.python.modules._io.PyIOBase

Methods inherited from class org.python.core.PyObject

Methods inherited from class java.lang.Object

Field Details

TYPE

closefd

mode

Constructor Details

PyFileIO

PyFileIO

Method Details

mode_readonly

readinto

write

seek

truncate

truncate

close

seekable

readable

writable

fileno

isatty

flush

toString