220 lines
6.4 KiB
Python
220 lines
6.4 KiB
Python
import _pyio as _original_pyio
|
|
import errno
|
|
import os as _original_os
|
|
import socket as _original_socket
|
|
from io import (
|
|
BufferedRandom as _OriginalBufferedRandom,
|
|
BufferedReader as _OriginalBufferedReader,
|
|
BufferedWriter as _OriginalBufferedWriter,
|
|
DEFAULT_BUFFER_SIZE,
|
|
TextIOWrapper as _OriginalTextIOWrapper,
|
|
IOBase as _OriginalIOBase,
|
|
)
|
|
from types import FunctionType
|
|
|
|
from eventlet.greenio.base import (
|
|
_operation_on_closed_file,
|
|
greenpipe_doc,
|
|
set_nonblocking,
|
|
SOCKET_BLOCKING,
|
|
)
|
|
from eventlet.hubs import notify_close, notify_opened, IOClosed, trampoline
|
|
from eventlet.support import get_errno
|
|
|
|
__all__ = ['_fileobject', 'GreenPipe']
|
|
|
|
# TODO get rid of this, it only seems like the original _fileobject
|
|
_fileobject = _original_socket.SocketIO
|
|
|
|
# Large part of the following code is copied from the original
|
|
# eventlet.greenio module
|
|
|
|
|
|
class GreenFileIO(_OriginalIOBase):
|
|
def __init__(self, name, mode='r', closefd=True, opener=None):
|
|
if isinstance(name, int):
|
|
fileno = name
|
|
self._name = "<fd:%d>" % fileno
|
|
else:
|
|
assert isinstance(name, str)
|
|
with open(name, mode) as fd:
|
|
self._name = fd.name
|
|
fileno = _original_os.dup(fd.fileno())
|
|
|
|
notify_opened(fileno)
|
|
self._fileno = fileno
|
|
self._mode = mode
|
|
self._closed = False
|
|
set_nonblocking(self)
|
|
self._seekable = None
|
|
|
|
@property
|
|
def closed(self):
|
|
return self._closed
|
|
|
|
def seekable(self):
|
|
if self._seekable is None:
|
|
try:
|
|
_original_os.lseek(self._fileno, 0, _original_os.SEEK_CUR)
|
|
except OSError as e:
|
|
if get_errno(e) == errno.ESPIPE:
|
|
self._seekable = False
|
|
else:
|
|
raise
|
|
else:
|
|
self._seekable = True
|
|
|
|
return self._seekable
|
|
|
|
def readable(self):
|
|
return 'r' in self._mode or '+' in self._mode
|
|
|
|
def writable(self):
|
|
return 'w' in self._mode or '+' in self._mode or 'a' in self._mode
|
|
|
|
def fileno(self):
|
|
return self._fileno
|
|
|
|
def read(self, size=-1):
|
|
if size == -1:
|
|
return self.readall()
|
|
|
|
while True:
|
|
try:
|
|
return _original_os.read(self._fileno, size)
|
|
except OSError as e:
|
|
if get_errno(e) not in SOCKET_BLOCKING:
|
|
raise OSError(*e.args)
|
|
self._trampoline(self, read=True)
|
|
|
|
def readall(self):
|
|
buf = []
|
|
while True:
|
|
try:
|
|
chunk = _original_os.read(self._fileno, DEFAULT_BUFFER_SIZE)
|
|
if chunk == b'':
|
|
return b''.join(buf)
|
|
buf.append(chunk)
|
|
except OSError as e:
|
|
if get_errno(e) not in SOCKET_BLOCKING:
|
|
raise OSError(*e.args)
|
|
self._trampoline(self, read=True)
|
|
|
|
def readinto(self, b):
|
|
up_to = len(b)
|
|
data = self.read(up_to)
|
|
bytes_read = len(data)
|
|
b[:bytes_read] = data
|
|
return bytes_read
|
|
|
|
def isatty(self):
|
|
try:
|
|
return _original_os.isatty(self.fileno())
|
|
except OSError as e:
|
|
raise OSError(*e.args)
|
|
|
|
def _trampoline(self, fd, read=False, write=False, timeout=None, timeout_exc=None):
|
|
if self._closed:
|
|
# Don't trampoline if we're already closed.
|
|
raise IOClosed()
|
|
try:
|
|
return trampoline(fd, read=read, write=write, timeout=timeout,
|
|
timeout_exc=timeout_exc,
|
|
mark_as_closed=self._mark_as_closed)
|
|
except IOClosed:
|
|
# Our fileno has been obsoleted. Defang ourselves to
|
|
# prevent spurious closes.
|
|
self._mark_as_closed()
|
|
raise
|
|
|
|
def _mark_as_closed(self):
|
|
""" Mark this socket as being closed """
|
|
self._closed = True
|
|
|
|
def write(self, data):
|
|
view = memoryview(data)
|
|
datalen = len(data)
|
|
offset = 0
|
|
while offset < datalen:
|
|
try:
|
|
written = _original_os.write(self._fileno, view[offset:])
|
|
except OSError as e:
|
|
if get_errno(e) not in SOCKET_BLOCKING:
|
|
raise OSError(*e.args)
|
|
trampoline(self, write=True)
|
|
else:
|
|
offset += written
|
|
return offset
|
|
|
|
def close(self):
|
|
if not self._closed:
|
|
self._closed = True
|
|
_original_os.close(self._fileno)
|
|
notify_close(self._fileno)
|
|
for method in [
|
|
'fileno', 'flush', 'isatty', 'next', 'read', 'readinto',
|
|
'readline', 'readlines', 'seek', 'tell', 'truncate',
|
|
'write', 'xreadlines', '__iter__', '__next__', 'writelines']:
|
|
setattr(self, method, _operation_on_closed_file)
|
|
|
|
def truncate(self, size=-1):
|
|
if size is None:
|
|
size = -1
|
|
if size == -1:
|
|
size = self.tell()
|
|
try:
|
|
rv = _original_os.ftruncate(self._fileno, size)
|
|
except OSError as e:
|
|
raise OSError(*e.args)
|
|
else:
|
|
self.seek(size) # move position&clear buffer
|
|
return rv
|
|
|
|
def seek(self, offset, whence=_original_os.SEEK_SET):
|
|
try:
|
|
return _original_os.lseek(self._fileno, offset, whence)
|
|
except OSError as e:
|
|
raise OSError(*e.args)
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, *args):
|
|
self.close()
|
|
|
|
|
|
_open_environment = dict(globals())
|
|
_open_environment.update(dict(
|
|
BufferedRandom=_OriginalBufferedRandom,
|
|
BufferedWriter=_OriginalBufferedWriter,
|
|
BufferedReader=_OriginalBufferedReader,
|
|
TextIOWrapper=_OriginalTextIOWrapper,
|
|
FileIO=GreenFileIO,
|
|
os=_original_os,
|
|
))
|
|
if hasattr(_original_pyio, 'text_encoding'):
|
|
_open_environment['text_encoding'] = _original_pyio.text_encoding
|
|
|
|
_pyio_open = getattr(_original_pyio.open, '__wrapped__', _original_pyio.open)
|
|
_open = FunctionType(
|
|
_pyio_open.__code__,
|
|
_open_environment,
|
|
)
|
|
|
|
|
|
def GreenPipe(name, mode="r", buffering=-1, encoding=None, errors=None,
|
|
newline=None, closefd=True, opener=None):
|
|
try:
|
|
fileno = name.fileno()
|
|
except AttributeError:
|
|
pass
|
|
else:
|
|
fileno = _original_os.dup(fileno)
|
|
name.close()
|
|
name = fileno
|
|
|
|
return _open(name, mode, buffering, encoding, errors, newline, closefd, opener)
|
|
|
|
|
|
GreenPipe.__doc__ = greenpipe_doc
|