def _send_dm_command(self, cmd, set_values=[]):
"""Send a command to the DigitalMicrograph script."""
# If output file exists, delete it to ensure old return values are gone.
# Use try_to_remove() because there may be delays in DM when
# DM is writing to that file.
if os.path.isfile(self.OUTPUT_FILE):
utils.try_to_remove(self.OUTPUT_FILE)
# Delete .ack and .ac2 files
if os.path.isfile(self.ACK_FILE):
os.remove(self.ACK_FILE)
if os.path.isfile(self.ACK_CUT_FILE):
os.remove(self.ACK_CUT_FILE)
# Try to open input file
success, input_file = utils.try_to_open(self.INPUT_FILE, 'w+')
if success:
input_file.write(cmd)
for item in set_values:
input_file.write('\n' + str(item))
input_file.close()
# Trigger DM script by renaming input file to command file
try:
os.rename(self.INPUT_FILE, self.COMMAND_FILE)
except Exception as e:
if self.error_state == 0:
self.error_state = 102
self.error_info = ('microtome._send_dm_command: could not '
'rename input file (' + str(e) + ')')
elif self.error_state == 0:
self.error_state = 102
self.error_info = ('microtome._send_dm_command: could not write '
'to input file')
def _read_dm_return_values(self):
"""Try to read return file and, if successful, return values."""
return_values = []
success, return_file = utils.try_to_open('..\\dm\\DMcom.out', 'r')
if success:
for line in return_file:
return_values.append(line.rstrip())
return_file.close()
elif self.error_state == 0:
self.error_state = 104
self.error_cause = ('microtome._read_dm_return_values: could not '
'read from return file')
if return_values == []:
return_values = [None, None]
return return_values
def _send_dm_command(self, cmd, set_values=[]):
"""Send a command to the DM script."""
# First, if output file exists, delete it to ensure old values are gone
if os.path.isfile('..\\dm\\DMcom.out'):
os.remove('..\\dm\\DMcom.out')
# Try to open command file:
success, cmd_file = utils.try_to_open('..\\dm\\DMcom.in', 'w+')
if success:
cmd_file.write(cmd)
for item in set_values:
cmd_file.write('\n' + str(item))
cmd_file.close()
# Create new trigger file:
success, trg_file = utils.try_to_open('..\\dm\\DMcom.trg', 'w+')
if success:
trg_file.close()
elif self.error_state == 0:
self.error_state = 102
self.error_cause = ('microtome._send_dm_command: could not '
'create trigger file')
elif self.error_state == 0:
self.error_state = 102
self.error_cause = ('microtome._send_dm_command: could not write '
'to command file')
def _read_dm_return_values(self):
"""Try to read output file and, if successful, return values."""
return_values = []
success, return_file = utils.try_to_open(self.OUTPUT_FILE, 'r')
if success:
for line in return_file:
return_values.append(line.rstrip())
return_file.close()
elif self.error_state == 0:
self.error_state = 104
self.error_info = ('microtome._read_dm_return_values: could not '
'read from output file')
if return_values == []:
return_values = [None, None]
return return_values
