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# NOT_RPYTHON
class CFFIWrapper(object):
def __init__(self):
import cffi
ffi = cffi.FFI()
ffi.cdef("""
HINSTANCE ShellExecuteA(HWND, LPCSTR, LPCSTR, LPCSTR, LPCSTR, INT);
HINSTANCE ShellExecuteW(HWND, LPCWSTR, LPCWSTR, LPCWSTR, LPCWSTR, INT);
""")
self.NULL = ffi.NULL
self.cast = ffi.cast
self.lib = ffi.dlopen("Shell32.dll")
self.SW_SHOWNORMAL = 1
self.getwinerror = ffi.getwinerror
_cffi_wrapper = None
def startfile(filepath, operation=None):
global _cffi_wrapper
if _cffi_wrapper is None:
_cffi_wrapper = CFFIWrapper()
w = _cffi_wrapper
#
if operation is None:
operation = w.NULL
if isinstance(filepath, bytes):
if isinstance(operation, str):
operation = operation.encode("ascii")
rc = w.lib.ShellExecuteA(w.NULL, operation, filepath,
w.NULL, w.NULL, w.SW_SHOWNORMAL)
elif isinstance(filepath, str):
if isinstance(operation, bytes):
operation = operation.decode("ascii")
rc = w.lib.ShellExecuteW(w.NULL, operation, filepath,
w.NULL, w.NULL, w.SW_SHOWNORMAL)
else:
raise TypeError("argument 1 must be str or bytes")
rc = int(w.cast("uintptr_t", rc))
if rc <= 32:
code, msg = w.getwinerror()
raise WindowsError(code, msg, filepath)
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