openmedialibrary_platform_w.../Lib/site-packages/asn1crypto/_ffi.py

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2019-01-20 10:35:31 +00:00
# coding: utf-8
"""
FFI helper compatibility functions. Exports the following items:
- LibraryNotFoundError
- FFIEngineError
- bytes_from_buffer()
- buffer_from_bytes()
- null()
"""
from __future__ import unicode_literals, division, absolute_import, print_function
from ctypes import create_string_buffer
def buffer_from_bytes(initializer):
return create_string_buffer(initializer)
def bytes_from_buffer(buffer, maxlen=None):
return buffer.raw
def null():
return None
class LibraryNotFoundError(Exception):
"""
An exception when trying to find a shared library
"""
pass
class FFIEngineError(Exception):
"""
An exception when trying to instantiate ctypes or cffi
"""
pass