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93 lines
2.4 KiB
93 lines
2.4 KiB
# Copyright 2013 Dean Gardiner <gardiner91@gmail.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from io import RawIOBase
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import time
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DEFAULT_BUFFER_SIZE = 4096
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SEEK_ORIGIN_BEGIN = 0
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SEEK_ORIGIN_CURRENT = 1
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SEEK_ORIGIN_END = 2
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class ReadTimeoutError(Exception):
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pass
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class File(RawIOBase):
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platform_handler = None
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def __init__(self, *args, **kwargs):
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super(File, self).__init__(*args, **kwargs)
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def get_handler(self):
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"""
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:rtype: asio.interfaces.base.Interface
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"""
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if not self.platform_handler:
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raise ValueError()
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return self.platform_handler
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def get_size(self):
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"""Get the current file size
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:rtype: int
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"""
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return self.get_handler().get_size(self)
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def get_path(self):
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"""Get the path of this file
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:rtype: str
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"""
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return self.get_handler().get_path(self)
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def seek(self, offset, origin):
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"""Sets a reference point of a file to the given value.
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:param offset: The point relative to origin to move
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:type offset: int
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:param origin: Reference point to seek (SEEK_ORIGIN_BEGIN, SEEK_ORIGIN_CURRENT, SEEK_ORIGIN_END)
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:type origin: int
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"""
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return self.get_handler().seek(self, offset, origin)
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def read(self, n=-1):
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"""Read up to n bytes from the object and return them.
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:type n: int
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:rtype: str
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"""
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return self.get_handler().read(self, n)
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def readinto(self, b):
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"""Read up to len(b) bytes into bytearray b and return the number of bytes read."""
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data = self.read(len(b))
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if data is None:
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return None
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b[:len(data)] = data
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return len(data)
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def close(self):
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"""Close the file handle"""
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return self.get_handler().close(self)
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def readable(self, *args, **kwargs):
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return True
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