本文整理汇总了Python中_ctypes.sizeof方法的典型用法代码示例。如果您正苦于以下问题：Python _ctypes.sizeof方法的具体用法？Python _ctypes.sizeof怎么用？Python _ctypes.sizeof使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类_ctypes的用法示例。
在下文中一共展示了_ctypes.sizeof方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: to_c_mech
# 需要导入模块: import _ctypes [as 别名]
# 或者: from _ctypes import sizeof [as 别名]
def to_c_mech(self):
"""
Create the Param structure, then convert the data into byte arrays.
:return: :class:`~pycryptoki.cryptoki.CK_MECHANISM`
"""
super(ECDH1DeriveMechanism, self).to_c_mech()
params = CK_ECDH1_DERIVE_PARAMS()
params.kdf = self.params["kdf"]
if self.params["sharedData"] is None:
shared_data = None
shared_data_len = 0
else:
shared_data, shared_data_len = to_byte_array(self.params["sharedData"])
params.pSharedData = cast(shared_data, CK_BYTE_PTR)
params.ulSharedDataLen = shared_data_len
public_data, public_data_len = to_byte_array(self.params["publicData"])
params.pPublicData = cast(public_data, CK_BYTE_PTR)
params.ulPublicDataLen = public_data_len
self.mech.pParameter = cast(pointer(params), c_void_p)
self.mech.usParameterLen = CK_ULONG(sizeof(params))
return self.mech 示例2: _check_size
# 需要导入模块: import _ctypes [as 别名]
# 或者: from _ctypes import sizeof [as 别名]
def _check_size(typ, typecode=None):
# Check if sizeof(ctypes_type) against struct.calcsize. This
# should protect somewhat against a misconfigured libffi.
from struct import calcsize
if typecode is None:
# Most _type_ codes are the same as used in struct
typecode = typ._type_
actual, required = sizeof(typ), calcsize(typecode)
if actual != required:
raise SystemError("sizeof(%s) wrong: %d instead of %d" % \
(typ, actual, required)) 示例3: to_c_mech
# 需要导入模块: import _ctypes [as 别名]
# 或者: from _ctypes import sizeof [as 别名]
def to_c_mech(self):
"""
Create the Param structure, then convert the data into byte arrays.
:return: :class:`~pycryptoki.cryptoki.CK_MECHANISM`
"""
super(PRFKDFDeriveMechanism, self).to_c_mech()
params = CK_PRF_KDF_PARAMS()
params.prfType = self.params["prf_type"]
if self.params["label"] is None:
label = ""
label_len = 0
else:
label, label_len = to_byte_array(self.params["label"])
if self.params["context"] is None:
context = ""
context_len = 0
else:
context, context_len = to_byte_array(self.params["context"])
if self.params["counter"] is None:
counter = 1
else:
counter = self.params["counter"]
ul_encoding_scheme = self.params["encoding_scheme"]
params.pLabel = cast(label, CK_BYTE_PTR)
params.ulLabelLen = label_len
params.pContext = cast(context, CK_BYTE_PTR)
params.ulContextLen = context_len
params.ulCounter = counter
params.ulEncodingScheme = ul_encoding_scheme
self.mech.pParameter = cast(pointer(params), c_void_p)
self.mech.usParameterLen = CK_ULONG(sizeof(params))
return self.mech 示例4: create_unicode_buffer
# 需要导入模块: import _ctypes [as 别名]
# 或者: from _ctypes import sizeof [as 别名]
def create_unicode_buffer(init, size=None):
"""create_unicode_buffer(aString) -> character array
create_unicode_buffer(anInteger) -> character array
create_unicode_buffer(aString, anInteger) -> character array
"""
if isinstance(init, str):
if size is None:
if sizeof(c_wchar) == 2:
# UTF-16 requires a surrogate pair (2 wchar_t) for non-BMP
# characters (outside [U+0000; U+FFFF] range). +1 for trailing
# NUL character.
size = sum(2 if ord(c) > 0xFFFF else 1 for c in init) + 1
else:
# 32-bit wchar_t (1 wchar_t per Unicode character). +1 for
# trailing NUL character.
size = len(init) + 1
buftype = c_wchar * size
buf = buftype()
buf.value = init
return buf
elif isinstance(init, int):
buftype = c_wchar * init
buf = buftype()
return buf
raise TypeError(init)
# XXX Deprecated