higstar <adr...@higstar.com> added the comment:
Another example of this:
---
import ctypes
correct_data_dict = {
'Data0' : 0x55555555,
'Data1' : 0x02,
'Data2' : 0x0AAA,
}
class closest_fit(ctypes.BigEndianStructure):
_pack_ = 1 # aligned to 8 bits, not ctypes default of 32
_fields_ = [
("Data0", ctypes.c_uint32, 32),
("Data1", ctypes.c_uint8, 3),
("Data2", ctypes.c_uint16, 12),
]
class closest_fit_min_16(ctypes.BigEndianStructure):
_pack_ = 1 # aligned to 8 bits, not ctypes default of 32
_fields_ = [
("Data0", ctypes.c_uint32, 32),
("Data1", ctypes.c_uint16, 3),
("Data2", ctypes.c_uint16, 12),
]
class closest_fit_min_32(ctypes.BigEndianStructure):
_pack_ = 1 # aligned to 8 bits, not ctypes default of 32
_fields_ = [
("Data0", ctypes.c_uint32, 32),
("Data1", ctypes.c_uint32, 3),
("Data2", ctypes.c_uint32, 12),
]
class uint32(ctypes.BigEndianStructure):
_pack_ = 1 # aligned to 8 bits, not ctypes default of 32
_fields_ = [
("Data0", ctypes.c_uint32, 32),
("Data1", ctypes.c_uint32, 3),
("Data2", ctypes.c_uint32, 12),
]
class uint64(ctypes.BigEndianStructure):
_pack_ = 1 # aligned to 8 bits, not ctypes default of 32
_fields_ = [
("Data0", ctypes.c_uint64, 32),
("Data1", ctypes.c_uint64, 3),
("Data2", ctypes.c_uint64, 12),
]
size_of_structures_in_bytes = 6
def castbytes(type):
buffer = (ctypes.c_byte * size_of_structures_in_bytes)()
for index in range(size_of_structures_in_bytes):
buffer[index] = 0x55
return ctypes.cast(ctypes.pointer(buffer),
ctypes.POINTER(type)).contents
def print_members(test):
print("Data0 is 0x%X, Data1 is 0x%X, Data2 is 0x%X for
%s"%(test.Data0, test.Data1, test.Data2, test.__class__.__name__))
test_classes = [closest_fit, uint32, closest_fit_min_16,
closest_fit_min_32, uint64]
Test_Failed = False
tests = [castbytes(type) for type in test_classes]
for test in tests:
# print_members(test)
for data in correct_data_dict:
if not test.__getattribute__(data) == correct_data_dict[data]:
Test_Failed = True
print("%s failed for %s, value was 0x%X but should have been
0x%X"%(data, test.__class__.__name__, test.__getattribute__(data),
correct_data_dict[data]))
if not Test_Failed:
print("Passed")
---
>c:\python25\python.exe IssueNEW.py
Data2 failed for closest_fit, value was 0x550 but should have been 0xAAA
>c:\python26\python.exe IssueNEW.py
Data2 failed for closest_fit, value was 0x550 but should have been 0xAAA
>c:\python30\python.exe IssueNEW.py
Data2 failed for closest_fit, value was 0x550 but should have been 0xAAA
----------
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue6069>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
