mirror of
https://github.com/clinton-hall/nzbToMedia.git
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8d43b8ea39
Also updates: - importlib-metadata-0.7 - jaraco-windows - jaraco.classes-1.5 - jaraco.collections-1.6.0 - jaraco.functools-1.20 - jaraco.structures-1.1.2 - jaraco.text-1.10.1 - jaraco.ui-1.6 - more-itertools-4.3.0 - path.py-11.5.0 - six-1.12.0
84 lines
1.8 KiB
Python
84 lines
1.8 KiB
Python
#!/usr/bin/env python
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import sys
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import ctypes
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import ctypes.wintypes
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import six
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builtins = six.moves.builtins
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__import__('jaraco.windows.api.memory')
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def format_system_message(errno):
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"""
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Call FormatMessage with a system error number to retrieve
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the descriptive error message.
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"""
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# first some flags used by FormatMessageW
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ALLOCATE_BUFFER = 0x100
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FROM_SYSTEM = 0x1000
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# Let FormatMessageW allocate the buffer (we'll free it below)
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# Also, let it know we want a system error message.
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flags = ALLOCATE_BUFFER | FROM_SYSTEM
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source = None
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message_id = errno
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language_id = 0
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result_buffer = ctypes.wintypes.LPWSTR()
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buffer_size = 0
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arguments = None
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bytes = ctypes.windll.kernel32.FormatMessageW(
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flags,
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source,
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message_id,
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language_id,
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ctypes.byref(result_buffer),
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buffer_size,
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arguments,
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)
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# note the following will cause an infinite loop if GetLastError
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# repeatedly returns an error that cannot be formatted, although
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# this should not happen.
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handle_nonzero_success(bytes)
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message = result_buffer.value
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ctypes.windll.kernel32.LocalFree(result_buffer)
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return message
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class WindowsError(builtins.WindowsError):
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"""
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More info about errors at
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http://msdn.microsoft.com/en-us/library/ms681381(VS.85).aspx
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"""
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def __init__(self, value=None):
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if value is None:
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value = ctypes.windll.kernel32.GetLastError()
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strerror = format_system_message(value)
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if sys.version_info > (3, 3):
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args = 0, strerror, None, value
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else:
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args = value, strerror
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super(WindowsError, self).__init__(*args)
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@property
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def message(self):
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return self.strerror
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@property
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def code(self):
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return self.winerror
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def __str__(self):
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return self.message
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def __repr__(self):
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return '{self.__class__.__name__}({self.winerror})'.format(**vars())
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def handle_nonzero_success(result):
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if result == 0:
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raise WindowsError()
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