You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
2.4 KiB
93 lines
2.4 KiB
6 years ago
|
# 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 io import RawIOBase
|
||
|
|
import time
|
||
|
|
|
||
|
|
DEFAULT_BUFFER_SIZE = 4096
|
||
|
|
|
||
|
|
SEEK_ORIGIN_BEGIN = 0
|
||
|
|
SEEK_ORIGIN_CURRENT = 1
|
||
|
|
SEEK_ORIGIN_END = 2
|
||
|
|
|
||
|
|
|
||
|
|
class ReadTimeoutError(Exception):
|
||
|
|
pass
|
||
|
|
|
||
|
|
|
||
|
|
class File(RawIOBase):
|
||
|
|
platform_handler = None
|
||
|
|
|
||
|
|
def __init__(self, *args, **kwargs):
|
||
|
|
super(File, self).__init__(*args, **kwargs)
|
||
|
|
|
||
|
|
def get_handler(self):
|
||
|
|
"""
|
||
|
|
:rtype: asio.interfaces.base.Interface
|
||
|
|
"""
|
||
|
|
if not self.platform_handler:
|
||
|
|
raise ValueError()
|
||
|
|
|
||
|
|
return self.platform_handler
|
||
|
|
|
||
|
|
def get_size(self):
|
||
|
|
"""Get the current file size
|
||
|
|
|
||
|
|
:rtype: int
|
||
|
|
"""
|
||
|
|
return self.get_handler().get_size(self)
|
||
|
|
|
||
|
|
def get_path(self):
|
||
|
|
"""Get the path of this file
|
||
|
|
|
||
|
|
:rtype: str
|
||
|
|
"""
|
||
|
|
return self.get_handler().get_path(self)
|
||
|
|
|
||
|
|
def seek(self, offset, origin):
|
||
|
|
"""Sets a reference point of a file to the given value.
|
||
|
|
|
||
|
|
:param offset: The point relative to origin to move
|
||
|
|
:type offset: int
|
||
|
|
|
||
|
|
:param origin: Reference point to seek (SEEK_ORIGIN_BEGIN, SEEK_ORIGIN_CURRENT, SEEK_ORIGIN_END)
|
||
|
|
:type origin: int
|
||
|
|
"""
|
||
|
|
return self.get_handler().seek(self, offset, origin)
|
||
|
|
|
||
|
|
def read(self, n=-1):
|
||
|
|
"""Read up to n bytes from the object and return them.
|
||
|
|
|
||
|
|
:type n: int
|
||
|
|
:rtype: str
|
||
|
|
"""
|
||
|
|
return self.get_handler().read(self, n)
|
||
|
|
|
||
|
|
def readinto(self, b):
|
||
|
|
"""Read up to len(b) bytes into bytearray b and return the number of bytes read."""
|
||
|
|
data = self.read(len(b))
|
||
|
|
|
||
|
|
if data is None:
|
||
|
|
return None
|
||
|
|
|
||
|
|
b[:len(data)] = data
|
||
|
|
return len(data)
|
||
|
|
|
||
|
|
def close(self):
|
||
|
|
"""Close the file handle"""
|
||
|
|
return self.get_handler().close(self)
|
||
|
|
|
||
|
|
def readable(self, *args, **kwargs):
|
||
|
|
return True
|