128 lines
4.3 KiB
Python
128 lines
4.3 KiB
Python
"""
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The MIT License (MIT)
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Copyright (c) 2015-present Rapptz
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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"""
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from __future__ import annotations
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from typing import Optional, TYPE_CHECKING, Union
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import os
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import io
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__all__ = (
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'File',
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)
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class File:
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r"""A parameter object used for :meth:`abc.Messageable.send`
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for sending file objects.
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.. note::
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File objects are single use and are not meant to be reused in
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multiple :meth:`abc.Messageable.send`\s.
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Attributes
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-----------
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fp: Union[:class:`os.PathLike`, :class:`io.BufferedIOBase`]
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A file-like object opened in binary mode and read mode
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or a filename representing a file in the hard drive to
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open.
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.. note::
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If the file-like object passed is opened via ``open`` then the
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modes 'rb' should be used.
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To pass binary data, consider usage of ``io.BytesIO``.
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filename: Optional[:class:`str`]
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The filename to display when uploading to Discord.
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If this is not given then it defaults to ``fp.name`` or if ``fp`` is
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a string then the ``filename`` will default to the string given.
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spoiler: :class:`bool`
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Whether the attachment is a spoiler.
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"""
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__slots__ = ('fp', 'filename', 'spoiler', '_original_pos', '_owner', '_closer')
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if TYPE_CHECKING:
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fp: io.BufferedIOBase
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filename: Optional[str]
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spoiler: bool
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def __init__(
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self,
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fp: Union[str, bytes, os.PathLike, io.BufferedIOBase],
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filename: Optional[str] = None,
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*,
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spoiler: bool = False,
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):
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if isinstance(fp, io.IOBase):
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if not (fp.seekable() and fp.readable()):
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raise ValueError(f'File buffer {fp!r} must be seekable and readable')
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self.fp = fp
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self._original_pos = fp.tell()
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self._owner = False
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else:
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self.fp = open(fp, 'rb')
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self._original_pos = 0
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self._owner = True
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# aiohttp only uses two methods from IOBase
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# read and close, since I want to control when the files
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# close, I need to stub it so it doesn't close unless
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# I tell it to
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self._closer = self.fp.close
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self.fp.close = lambda: None
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if filename is None:
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if isinstance(fp, str):
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_, self.filename = os.path.split(fp)
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else:
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self.filename = getattr(fp, 'name', None)
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else:
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self.filename = filename
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if spoiler and self.filename is not None and not self.filename.startswith('SPOILER_'):
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self.filename = 'SPOILER_' + self.filename
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self.spoiler = spoiler or (self.filename is not None and self.filename.startswith('SPOILER_'))
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def reset(self, *, seek: Union[int, bool] = True) -> None:
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# The `seek` parameter is needed because
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# the retry-loop is iterated over multiple times
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# starting from 0, as an implementation quirk
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# the resetting must be done at the beginning
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# before a request is done, since the first index
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# is 0, and thus false, then this prevents an
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# unnecessary seek since it's the first request
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# done.
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if seek:
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self.fp.seek(self._original_pos)
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def close(self) -> None:
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self.fp.close = self._closer
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if self._owner:
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self._closer()
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