mirror of
https://github.com/morpheus65535/bazarr.git
synced 2024-11-14 03:36:59 +08:00
123 lines
3.2 KiB
Python
123 lines
3.2 KiB
Python
# Copyright 2013 Dean Gardiner <gardiner91@gmail.com>
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
from asio.file import File, DEFAULT_BUFFER_SIZE
|
|
from asio.interfaces.base import Interface
|
|
|
|
import sys
|
|
import os
|
|
|
|
if os.name == 'posix':
|
|
import select
|
|
|
|
# fcntl is only required on darwin
|
|
if sys.platform == 'darwin':
|
|
import fcntl
|
|
|
|
F_GETPATH = 50
|
|
|
|
|
|
class PosixInterface(Interface):
|
|
@classmethod
|
|
def open(cls, file_path, parameters=None):
|
|
"""
|
|
:type file_path: str
|
|
:rtype: asio.interfaces.posix.PosixFile
|
|
"""
|
|
if not parameters:
|
|
parameters = {}
|
|
|
|
if not parameters.get('mode'):
|
|
parameters.pop('mode')
|
|
|
|
if not parameters.get('buffering'):
|
|
parameters.pop('buffering')
|
|
|
|
fd = os.open(file_path, os.O_RDONLY | os.O_NONBLOCK)
|
|
|
|
return PosixFile(fd)
|
|
|
|
@classmethod
|
|
def get_size(cls, fp):
|
|
"""
|
|
:type fp: asio.interfaces.posix.PosixFile
|
|
:rtype: int
|
|
"""
|
|
return os.fstat(fp.fd).st_size
|
|
|
|
@classmethod
|
|
def get_path(cls, fp):
|
|
"""
|
|
:type fp: asio.interfaces.posix.PosixFile
|
|
:rtype: int
|
|
"""
|
|
|
|
# readlink /dev/fd fails on darwin, so instead use fcntl F_GETPATH
|
|
if sys.platform == 'darwin':
|
|
return fcntl.fcntl(fp.fd, F_GETPATH, '\0' * 1024).rstrip('\0')
|
|
|
|
# Use /proc/self/fd if available
|
|
if os.path.lexists("/proc/self/fd/"):
|
|
return os.readlink("/proc/self/fd/%s" % fp.fd)
|
|
|
|
# Fallback to /dev/fd
|
|
if os.path.lexists("/dev/fd/"):
|
|
return os.readlink("/dev/fd/%s" % fp.fd)
|
|
|
|
raise NotImplementedError('Environment not supported (fdescfs not mounted?)')
|
|
|
|
@classmethod
|
|
def seek(cls, fp, offset, origin):
|
|
"""
|
|
:type fp: asio.interfaces.posix.PosixFile
|
|
:type offset: int
|
|
:type origin: int
|
|
"""
|
|
os.lseek(fp.fd, offset, origin)
|
|
|
|
@classmethod
|
|
def read(cls, fp, n=DEFAULT_BUFFER_SIZE):
|
|
"""
|
|
:type fp: asio.interfaces.posix.PosixFile
|
|
:type n: int
|
|
:rtype: str
|
|
"""
|
|
r, w, x = select.select([fp.fd], [], [], 5)
|
|
|
|
if r:
|
|
return os.read(fp.fd, n)
|
|
|
|
return None
|
|
|
|
@classmethod
|
|
def close(cls, fp):
|
|
"""
|
|
:type fp: asio.interfaces.posix.PosixFile
|
|
"""
|
|
os.close(fp.fd)
|
|
|
|
|
|
class PosixFile(File):
|
|
platform_handler = PosixInterface
|
|
|
|
def __init__(self, fd, *args, **kwargs):
|
|
"""
|
|
:type fd: asio.file.File
|
|
"""
|
|
super(PosixFile, self).__init__(*args, **kwargs)
|
|
|
|
self.fd = fd
|
|
|
|
def __str__(self):
|
|
return "<asio_posix.PosixFile file: %s>" % self.fd
|