41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
#! /usr/bin/env python
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# ______________________________________________________________________
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import ctypes
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# ______________________________________________________________________
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class PyMethodDef (ctypes.Structure):
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_fields_ = [
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('ml_name', ctypes.c_char_p),
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('ml_meth', ctypes.c_void_p),
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('ml_flags', ctypes.c_int),
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('ml_doc', ctypes.c_char_p),
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]
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PyCFunction_NewEx = ctypes.pythonapi.PyCFunction_NewEx
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PyCFunction_NewEx.argtypes = (ctypes.POINTER(PyMethodDef),
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ctypes.c_void_p,
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ctypes.c_void_p)
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PyCFunction_NewEx.restype = ctypes.py_object
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cache = {} # Unsure if this is necessary to keep the PyMethodDef
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# structures from being garbage collected. Assuming so...
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def pyaddfunc (func_name, func_ptr, func_doc = None):
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global cache
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if bytes != str:
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func_name = bytes(ord(ch) for ch in func_name)
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key = (func_name, func_ptr)
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if key in cache:
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_, ret_val = cache[key]
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else:
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mdef = PyMethodDef(bytes(func_name),
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func_ptr,
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1, # == METH_VARARGS (hopefully remains so...)
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func_doc)
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ret_val = PyCFunction_NewEx(ctypes.byref(mdef), 0, 0)
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cache[key] = (mdef, ret_val)
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return ret_val
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# ______________________________________________________________________
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# End of pyaddfunc.py
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