def write(self, b): bytes_to_be_written = len(b) buffer = get_buffer(b) code_units_to_be_written = min(bytes_to_be_written, MAX_BYTES_WRITTEN) // 2 code_units_written = c_ulong() retval = WriteConsoleW(self.handle, buffer, code_units_to_be_written, byref(code_units_written), None) bytes_written = 2 * code_units_written.value # fixes both infinite loop of io.BufferedWriter.flush() on when the buffer has odd length # and situation when WriteConsoleW refuses to write lesser that MAX_BYTES_WRITTEN bytes if bytes_written == 0 != bytes_to_be_written: raise OSError(self._error_message(GetLastError())) else: return bytes_written
def write(self, b):
bytes_to_be_written = len(b)
buffer = get_buffer(b)
code_units_to_be_written = min(bytes_to_be_written,
MAX_BYTES_WRITTEN) // 2
code_units_written = c_ulong()
retval = WriteConsoleW(self.handle, buffer, code_units_to_be_written,
byref(code_units_written), None)
bytes_written = 2 * code_units_written.value
# fixes both infinite loop of io.BufferedWriter.flush() on when the buffer has odd length
# and situation when WriteConsoleW refuses to write lesser that MAX_BYTES_WRITTEN bytes
if bytes_written == 0 != bytes_to_be_written:
raise OSError(self._error_message(GetLastError()))
else:
return bytes_written
def readinto(self, b):
bytes_to_be_read = len(b)
if not bytes_to_be_read:
return 0
elif bytes_to_be_read % 2:
raise ValueError("cannot read odd number of bytes from UTF-16-LE encoded console")
buffer = get_buffer(b, writable=True)
code_units_to_be_read = bytes_to_be_read // 2
code_units_read = c_ulong()
retval = ReadConsoleW(self.handle, buffer, code_units_to_be_read, byref(code_units_read), None)
if GetLastError() == ERROR_OPERATION_ABORTED:
time.sleep(0.1) # wait for KeyboardInterrupt
if not retval:
raise OSError("Windows error {}".format(GetLastError()))
if buffer[0] == EOF:
return 0
else:
return 2 * code_units_read.value
def readinto(self, b):
bytes_to_be_read = len(b)
if not bytes_to_be_read:
return 0
elif bytes_to_be_read % 2:
raise ValueError(
"cannot read odd number of bytes from UTF-16-LE encoded console"
)
buffer = get_buffer(b, writable=True)
code_units_to_be_read = bytes_to_be_read // 2
code_units_read = c_ulong()
retval = ReadConsoleW(self.handle, buffer, code_units_to_be_read,
byref(code_units_read), None)
if GetLastError() == ERROR_OPERATION_ABORTED:
time.sleep(0.1) # wait for KeyboardInterrupt
if not retval:
raise OSError("Windows error {}".format(GetLastError()))
if buffer[0] == EOF:
return 0
else:
return 2 * code_units_read.value
