未验证 提交 71aebf1e 编写于 作者: L Linhe Huo 提交者: GitHub

[TD-6586]<fix>: fix binary/nchar convertion error in python connector (#7913)

上级 0fc2985b
......@@ -165,12 +165,14 @@ def _crow_binary_to_python_block(data, num_of_rows, nbytes=None, precision=Field
assert nbytes is not None
res = []
for i in range(abs(num_of_rows)):
try:
rbyte = ctypes.cast(data + nbytes * i, ctypes.POINTER(ctypes.c_short))[:1].pop()
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode()[0:rbyte])
except ValueError:
rbyte = ctypes.cast(data + nbytes * i, ctypes.POINTER(ctypes.c_short))[:1].pop()
chars = ctypes.cast(c_char_p(data + nbytes * i + 2), ctypes.POINTER(c_char * rbyte))
buffer = create_string_buffer(rbyte + 1)
buffer[:rbyte] = chars[0][:rbyte]
if rbyte == 1 and buffer[0] == b'\xff':
res.append(None)
else:
res.append(cast(buffer, c_char_p).value.decode())
return res
......@@ -179,11 +181,14 @@ def _crow_nchar_to_python_block(data, num_of_rows, nbytes=None, precision=FieldT
assert nbytes is not None
res = []
for i in range(abs(num_of_rows)):
try:
tmpstr = ctypes.c_char_p(data + nbytes * i + 2)
res.append(tmpstr.value.decode())
except ValueError:
rbyte = ctypes.cast(data + nbytes * i, ctypes.POINTER(ctypes.c_short))[:1].pop()
chars = ctypes.cast(c_char_p(data + nbytes * i + 2), ctypes.POINTER(c_char * rbyte))
buffer = create_string_buffer(rbyte + 1)
buffer[:rbyte] = chars[0][:rbyte]
if rbyte == 4 and buffer[:4] == b'\xff'*4:
res.append(None)
else:
res.append(cast(buffer, c_char_p).value.decode())
return res
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册