def repeat_last_fragment(translator: Translator, stroke: Stroke, macro_args: str) -> None:
'''
Macro to repeat the last fragments(s) in Plover.
:param translator: The active Plover translator that is executing the macro.
:type translator: plover.translation.Translator
:param stroke: The current stroke (what invoked this macro).
:type stroke: plover.translation.Stroke
:param macro_args: The optional arguments specified to the macro as a comma-delimited string.
Piece 1: The number of previous fragments to repeat. Default is 1.
:type macro_args: str
'''
# Get the current state
translations = translator.get_state().translations
if not translations:
return
# Process input
try:
num_to_repeat = int(macro_args.split(DELIM_ARGS)[0])
except:
num_to_repeat = 1
# Output the new translations
formatter = RetroFormatter(translations)
last_fragments = formatter.last_fragments(num_to_repeat)
for fragment in last_fragments:
new_translation = Translation([stroke], fragment)
translator.translate_translation(new_translation)
def repeat_last_translation(translator: Translator, stroke: Stroke, macro_args: str) -> None:
'''
Macro to repeat the last translation(s) in Plover.
:param translator: The active Plover translator that is executing the macro.
:type translator: plover.translation.Translator
:param stroke: The current stroke (what invoked this macro).
:type stroke: plover.translation.Stroke
:param macro_args: The optional arguments specified to the macro as a comma-delimited string.
Piece 1: The number of previous translations to repeat. Default is 1.
:type macro_args: str
'''
# Get the current state
translations = translator.get_state().translations
if not translations:
return
# Process input
try:
num_to_repeat = int(macro_args.split(DELIM_ARGS)[0])
except:
num_to_repeat = 1
# Output the new translations
for translation in translations[-num_to_repeat:]:
repeated_translation = Translation(translation.strokes, translation.english)
translator.translate_translation(repeated_translation)
def retro_everything(translator: Translator, stroke: Stroke, cmdline: str):
print("\n\n\nRetro everything invoked with: " + str(stroke) + ", " +
cmdline)
args = cmdline.split(",")
left_char = args[0]
right_char = args[1]
all_translations = translator.get_state().translations
affected_translation_cnt = len(
list(
itertools.takewhile(lambda x: x.strokes[-1] == stroke,
reversed(all_translations))))
# translations that _will_ be affected
affected_translations = all_translations[-(affected_translation_cnt + 1):]
affected_strokes = flatten([x.strokes for x in affected_translations])
affected_string = " ".join(
flatten([
recursively_get_old_english(stroke, t)
for t in affected_translations
]))
resulting_translation = left_char + affected_string + right_char
my_trans = Translation(affected_strokes + [stroke], resulting_translation)
my_trans.replaced = affected_translations
translator.translate_translation(my_trans)
class Steno:
def __init__(self, output, log):
self._log = log
self._output = output
self._config = plover.config.Config()
with open(plover.config.CONFIG_FILE) as f:
self._config.load(f)
keymap = self._config.get_machine_specific_options('NKRO Keyboard')['keymap']
self._mapping = {}
for steno_key, key_names in keymap.get().items():
for key in key_names:
key = key.lower()
if not key in PSEUDOKEY_TO_KEYCODE:
continue
keycode = PSEUDOKEY_TO_KEYCODE[key]
self._mapping[keycode] = steno_key
self._dicts = DictionaryManager.load(self._config.get_dictionary_file_names())
self._formatter = Formatter()
self._formatter.set_output(self._output)
self._translator = Translator()
self._translator.add_listener(self._formatter.format)
self._translator.get_dictionary().set_dicts(self._dicts)
self._translator.set_min_undo_length(NB_PREDIT_STROKES)
self.reset(full=True, output=False)
def flush(self):
self._output.flush()
self.reset()
def stroke(self, stroke):
self._log.debug('stroke(%s)' % stroke.rtfcre)
self._output.stroke_start()
self._translator.translate(stroke)
self._output.stroke_end()
def reset(self, full=False, output=True):
self._log.debug('reset steno state (full=%s)' % full)
state = _State()
state.tail = self._translator.get_state().last()
if full or state.tail is None:
state.tail = Translation([Stroke('*')], None)
state.tail.formatting = [_Action(attach=True)]
self._translator.set_state(state)
if output:
self._output.reset()
def translate_keycode_to_steno(self, keycode):
return self._mapping.get(keycode, None)
def test_changing_state(self):
output = []
def listener(undo, do, prev):
prev = list(prev) if prev else None
output.append((undo, do, prev))
d = StenoDictionary()
d[('S', 'P')] = 'hi'
dc = StenoDictionaryCollection()
dc.set_dicts([d])
t = Translator()
t.set_dictionary(dc)
t.translate(stroke('T'))
t.translate(stroke('S'))
s = copy.deepcopy(t.get_state())
t.add_listener(listener)
expected = [([Translation([stroke('S')], None)],
[Translation([stroke('S'), stroke('P')], 'hi')],
[Translation([stroke('T')], None)])]
t.translate(stroke('P'))
self.assertEqual(output, expected)
del output[:]
t.set_state(s)
t.translate(stroke('P'))
self.assertEqual(output, expected)
del output[:]
t.clear_state()
t.translate(stroke('P'))
self.assertEqual(output, [([], [Translation([stroke('P')], None)], None)])
del output[:]
t.set_state(s)
t.translate(stroke('P'))
self.assertEqual(output,
[([],
[Translation([stroke('P')], None)],
[Translation([stroke('S'), stroke('P')], 'hi')])])
class StenoEngine(object):
HOOKS = '''
stroked
translated
machine_state_changed
output_changed
config_changed
dictionaries_loaded
send_string
send_backspaces
send_key_combination
add_translation
focus
configure
lookup
quit
'''.split()
def __init__(self, config, keyboard_emulation):
self._config = config
self._is_running = False
self._queue = Queue()
self._lock = threading.RLock()
self._machine = None
self._machine_state = None
self._machine_params = MachineParams(None, None, None)
self._formatter = Formatter()
self._formatter.set_output(self)
self._formatter.add_listener(self._on_translated)
self._translator = Translator()
self._translator.add_listener(log.translation)
self._translator.add_listener(self._formatter.format)
self._dictionaries = self._translator.get_dictionary()
self._dictionaries_manager = DictionaryLoadingManager()
self._running_state = self._translator.get_state()
self._keyboard_emulation = keyboard_emulation
self._hooks = { hook: [] for hook in self.HOOKS }
self._running_extensions = {}
def __enter__(self):
self._lock.__enter__()
return self
def __exit__(self, exc_type, exc_value, traceback):
self._lock.__exit__(exc_type, exc_value, traceback)
def _in_engine_thread(self):
raise NotImplementedError()
def _same_thread_hook(self, func, *args, **kwargs):
if self._in_engine_thread():
func(*args, **kwargs)
else:
self._queue.put((func, args, kwargs))
def run(self):
while True:
func, args, kwargs = self._queue.get()
try:
with self._lock:
if func(*args, **kwargs):
break
except Exception:
log.error('engine %s failed', func.__name__[1:], exc_info=True)
def _stop(self):
self._stop_extensions(self._running_extensions.keys())
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
def _start(self):
self._set_output(self._config.get_auto_start())
self._update(full=True)
def _set_dictionaries(self, dictionaries):
def dictionaries_changed(l1, l2):
if len(l1) != len(l2):
return True
for d1, d2 in zip(l1, l2):
if d1 is not d2:
return True
return False
if not dictionaries_changed(dictionaries, self._dictionaries.dicts):
# No change.
return
self._dictionaries = StenoDictionaryCollection(dictionaries)
self._translator.set_dictionary(self._dictionaries)
self._trigger_hook('dictionaries_loaded', self._dictionaries)
def _update(self, config_update=None, full=False, reset_machine=False):
original_config = self._config.as_dict()
# Update configuration.
if config_update is not None:
self._config.update(**config_update)
config = self._config.as_dict()
else:
config = original_config
# Create configuration update.
if full:
config_update = config
else:
config_update = {
option: value
for option, value in config.items()
if value != original_config[option]
}
if 'machine_type' in config_update:
for opt in (
'machine_specific_options',
'system_keymap',
):
config_update[opt] = config[opt]
# Update logging.
log.set_stroke_filename(config['log_file_name'])
log.enable_stroke_logging(config['enable_stroke_logging'])
log.enable_translation_logging(config['enable_translation_logging'])
# Update output.
self._formatter.set_space_placement(config['space_placement'])
self._formatter.start_attached = config['start_attached']
self._formatter.start_capitalized = config['start_capitalized']
self._translator.set_min_undo_length(config['undo_levels'])
# Update system.
system_name = config['system_name']
if system.NAME != system_name:
log.info('loading system: %s', system_name)
system.setup(system_name)
# Update machine.
update_keymap = False
start_machine = False
machine_params = MachineParams(config['machine_type'],
config['machine_specific_options'],
config['system_keymap'])
# Do not reset if only the keymap changed.
if self._machine_params is None or \
self._machine_params.type != machine_params.type or \
self._machine_params.options != machine_params.options:
reset_machine = True
if reset_machine:
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
machine_type = config['machine_type']
machine_options = config['machine_specific_options']
try:
machine_class = registry.get_plugin('machine', machine_type).obj
except Exception as e:
raise InvalidConfigurationError(str(e))
log.info('setting machine: %s', machine_type)
self._machine = machine_class(machine_options)
self._machine.set_suppression(self._is_running)
self._machine.add_state_callback(self._machine_state_callback)
self._machine.add_stroke_callback(self._machine_stroke_callback)
self._machine_params = machine_params
update_keymap = True
start_machine = True
elif self._machine is not None:
update_keymap = 'system_keymap' in config_update
if update_keymap:
machine_keymap = config['system_keymap']
if machine_keymap is not None:
self._machine.set_keymap(machine_keymap)
if start_machine:
self._machine.start_capture()
# Update running extensions.
enabled_extensions = config['enabled_extensions']
running_extensions = set(self._running_extensions)
self._stop_extensions(running_extensions - enabled_extensions)
self._start_extensions(enabled_extensions - running_extensions)
# Trigger `config_changed` hook.
if config_update:
self._trigger_hook('config_changed', config_update)
# Update dictionaries.
config_dictionaries = OrderedDict(
(d.path, d)
for d in config['dictionaries']
)
copy_default_dictionaries(config_dictionaries.keys())
# Start by unloading outdated dictionaries.
self._dictionaries_manager.unload_outdated()
self._set_dictionaries([
d for d in self._dictionaries.dicts
if d.path in config_dictionaries and \
d.path in self._dictionaries_manager
])
# And then (re)load all dictionaries.
dictionaries = []
for result in self._dictionaries_manager.load(config_dictionaries.keys()):
if isinstance(result, DictionaryLoaderException):
d = ErroredDictionary(result.path, result.exception)
# Only show an error if it's new.
if d != self._dictionaries.get(result.path):
log.error('loading dictionary `%s` failed: %s',
shorten_path(result.path), str(result.exception))
else:
d = result
d.enabled = config_dictionaries[d.path].enabled
dictionaries.append(d)
self._set_dictionaries(dictionaries)
def _start_extensions(self, extension_list):
for extension_name in extension_list:
log.info('starting `%s` extension', extension_name)
try:
extension = registry.get_plugin('extension', extension_name).obj(self)
extension.start()
except Exception:
log.error('initializing extension `%s` failed', extension_name, exc_info=True)
else:
self._running_extensions[extension_name] = extension
def _stop_extensions(self, extension_list):
for extension_name in list(extension_list):
log.info('stopping `%s` extension', extension_name)
extension = self._running_extensions.pop(extension_name)
extension.stop()
del extension
def _quit(self, code):
self._stop()
self.code = code
self._trigger_hook('quit')
return True
def _toggle_output(self):
self._set_output(not self._is_running)
def _set_output(self, enabled):
if enabled == self._is_running:
return
self._is_running = enabled
if enabled:
self._translator.set_state(self._running_state)
else:
self._translator.clear_state()
if self._machine is not None:
self._machine.set_suppression(enabled)
self._trigger_hook('output_changed', enabled)
def _machine_state_callback(self, machine_state):
self._same_thread_hook(self._on_machine_state_changed, machine_state)
def _machine_stroke_callback(self, steno_keys):
self._same_thread_hook(self._on_stroked, steno_keys)
@with_lock
def _on_machine_state_changed(self, machine_state):
assert machine_state is not None
self._machine_state = machine_state
machine_type = self._config.get_machine_type()
self._trigger_hook('machine_state_changed', machine_type, machine_state)
def _consume_engine_command(self, command):
# The first commands can be used whether plover has output enabled or not.
if command == 'RESUME':
self._set_output(True)
return True
elif command == 'TOGGLE':
self._toggle_output()
return True
elif command == 'QUIT':
self.quit()
return True
if not self._is_running:
return False
# These commands can only be run when plover has output enabled.
if command == 'SUSPEND':
self._set_output(False)
elif command == 'CONFIGURE':
self._trigger_hook('configure')
elif command == 'FOCUS':
self._trigger_hook('focus')
elif command == 'ADD_TRANSLATION':
self._trigger_hook('add_translation')
elif command == 'LOOKUP':
self._trigger_hook('lookup')
else:
command_args = command.split(':', 1)
command_fn = registry.get_plugin('command', command_args[0]).obj
command_fn(self, command_args[1] if len(command_args) == 2 else '')
return False
def _on_stroked(self, steno_keys):
stroke = Stroke(steno_keys)
log.stroke(stroke)
self._translator.translate(stroke)
self._trigger_hook('stroked', stroke)
def _on_translated(self, old, new):
if not self._is_running:
return
self._trigger_hook('translated', old, new)
def send_backspaces(self, b):
if not self._is_running:
return
self._keyboard_emulation.send_backspaces(b)
self._trigger_hook('send_backspaces', b)
def send_string(self, s):
if not self._is_running:
return
self._keyboard_emulation.send_string(s)
self._trigger_hook('send_string', s)
def send_key_combination(self, c):
if not self._is_running:
return
self._keyboard_emulation.send_key_combination(c)
self._trigger_hook('send_key_combination', c)
def send_engine_command(self, command):
suppress = not self._is_running
suppress &= self._consume_engine_command(command)
if suppress:
self._machine.suppress_last_stroke(self._keyboard_emulation.send_backspaces)
def toggle_output(self):
self._same_thread_hook(self._toggle_output)
def set_output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def machine_state(self):
return self._machine_state
@property
@with_lock
def output(self):
return self._is_running
@output.setter
def output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def config(self):
return self._config.as_dict()
@config.setter
def config(self, update):
self._same_thread_hook(self._update, config_update=update)
def reset_machine(self):
self._same_thread_hook(self._update, reset_machine=True)
def load_config(self):
try:
with open(self._config.target_file, 'rb') as f:
self._config.load(f)
except Exception:
log.error('loading configuration failed, reseting to default', exc_info=True)
self._config.clear()
return False
return True
def start(self):
self._same_thread_hook(self._start)
def quit(self, code=0):
# We need to go through the queue, even when already called
# from the engine thread so _quit's return code does break
# the thread out of its main loop.
self._queue.put((self._quit, (code,), {}))
def restart(self):
self.quit(-1)
def join(self):
return self.code
@with_lock
def machine_specific_options(self, machine_type):
return self._config.get_machine_specific_options(machine_type)
@with_lock
def system_keymap(self, machine_type, system_name):
return self._config.get_system_keymap(machine_type, system_name)
@with_lock
def lookup(self, translation):
return self._dictionaries.lookup(translation)
@with_lock
def raw_lookup(self, translation):
return self._dictionaries.raw_lookup(translation)
@with_lock
def reverse_lookup(self, translation):
matches = self._dictionaries.reverse_lookup(translation)
return [] if matches is None else matches
@with_lock
def casereverse_lookup(self, translation):
matches = self._dictionaries.casereverse_lookup(translation)
return set() if matches is None else matches
@with_lock
def add_dictionary_filter(self, dictionary_filter):
self._dictionaries.add_filter(dictionary_filter)
@with_lock
def remove_dictionary_filter(self, dictionary_filter):
self._dictionaries.remove_filter(dictionary_filter)
@with_lock
def get_suggestions(self, translation):
return Suggestions(self._dictionaries).find(translation)
@property
@with_lock
def translator_state(self):
return self._translator.get_state()
@translator_state.setter
@with_lock
def translator_state(self, state):
self._translator.set_state(state)
@with_lock
def clear_translator_state(self, undo=False):
if undo:
state = self._translator.get_state()
self._formatter.format(state.translations, (), None)
self._translator.clear_state()
@property
@with_lock
def starting_stroke_state(self):
return StartingStrokeState(self._formatter.start_attached,
self._formatter.start_capitalized)
@starting_stroke_state.setter
@with_lock
def starting_stroke_state(self, state):
self._formatter.start_attached = state.attach
self._formatter.start_capitalized = state.capitalize
@with_lock
def add_translation(self, strokes, translation, dictionary_path=None):
if dictionary_path is None:
dictionary_path = self._dictionaries.first_writable().path
self._dictionaries.set(strokes, translation, path=dictionary_path)
self._dictionaries.save(path_list=(dictionary_path,))
@property
@with_lock
def dictionaries(self):
return self._dictionaries
# Hooks.
def _trigger_hook(self, hook, *args, **kwargs):
for callback in self._hooks[hook]:
try:
callback(*args, **kwargs)
except Exception:
log.error('hook %r callback %r failed',
hook, callback,
exc_info=True)
@with_lock
def hook_connect(self, hook, callback):
self._hooks[hook].append(callback)
@with_lock
def hook_disconnect(self, hook, callback):
self._hooks[hook].remove(callback)
class StenoEngine(object):
HOOKS = '''
stroked
translated
machine_state_changed
output_changed
config_changed
send_string
send_backspaces
send_key_combination
add_translation
focus
configure
lookup
quit
'''.split()
def __init__(self, config, keyboard_emulation):
self._config = config
self._is_running = False
self._queue = Queue()
self._lock = threading.RLock()
self._machine = None
self._machine_state = None
self._machine_params = MachineParams(None, None, None)
self._formatter = Formatter()
self._formatter.set_output(self)
self._formatter.add_listener(self._on_translated)
self._translator = Translator()
self._translator.add_listener(log.translation)
self._translator.add_listener(self._formatter.format)
self._dictionaries = self._translator.get_dictionary()
self._dictionaries_manager = DictionaryLoadingManager()
self._running_state = self._translator.get_state()
self._suggestions = Suggestions(self._dictionaries)
self._keyboard_emulation = keyboard_emulation
self._hooks = {hook: [] for hook in self.HOOKS}
def __enter__(self):
self._lock.__enter__()
return self
def __exit__(self, exc_type, exc_value, traceback):
self._lock.__exit__(exc_type, exc_value, traceback)
def _in_engine_thread(self):
raise NotImplementedError()
def _same_thread_hook(self, func, *args, **kwargs):
if self._in_engine_thread():
func(*args, **kwargs)
else:
self._queue.put((func, args, kwargs))
def run(self):
while True:
func, args, kwargs = self._queue.get()
try:
with self._lock:
if func(*args, **kwargs):
break
except Exception:
log.error('engine %s failed', func.__name__[1:], exc_info=True)
def _stop(self):
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
def _start(self):
self._set_output(self._config.get_auto_start())
copy_default_dictionaries(self._config)
self._update(full=True)
def _update(self, config_update=None, full=False, reset_machine=False):
original_config = self._config.as_dict()
# Update configuration.
if config_update is not None:
self._config.update(**config_update)
config = self._config.as_dict()
else:
config = original_config
# Create configuration update.
if full:
config_update = config
else:
config_update = {
option: value
for option, value in config.items()
if value != original_config[option]
}
if 'machine_type' in config_update:
for opt in (
'machine_specific_options',
'system_keymap',
):
config_update[opt] = config[opt]
# Update logging.
log.set_stroke_filename(config['log_file_name'])
log.enable_stroke_logging(config['enable_stroke_logging'])
log.enable_translation_logging(config['enable_translation_logging'])
# Update output.
self._formatter.set_space_placement(config['space_placement'])
self._formatter.start_attached = config['start_attached']
self._formatter.start_capitalized = config['start_capitalized']
self._translator.set_min_undo_length(config['undo_levels'])
# Update machine.
update_keymap = False
start_machine = False
machine_params = MachineParams(config['machine_type'],
config['machine_specific_options'],
config['system_keymap'])
if reset_machine or machine_params != self._machine_params:
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
machine_type = config['machine_type']
machine_options = config['machine_specific_options']
try:
machine_class = machine_registry.get(machine_type)
except NoSuchMachineException as e:
raise InvalidConfigurationError(str(e))
self._machine = machine_class(machine_options)
self._machine.set_suppression(self._is_running)
self._machine.add_state_callback(self._machine_state_callback)
self._machine.add_stroke_callback(self._machine_stroke_callback)
self._machine_params = machine_params
update_keymap = True
start_machine = True
elif self._machine is not None:
update_keymap = 'system_keymap' in config_update
if update_keymap:
machine_keymap = config['system_keymap']
if machine_keymap is not None:
self._machine.set_keymap(machine_keymap)
if start_machine:
self._machine.start_capture()
# Update dictionaries.
dictionaries_files = config['dictionary_file_names']
dictionaries = self._dictionaries_manager.load(dictionaries_files)
self._dictionaries.set_dicts(dictionaries)
# Trigger `config_changed` hook.
if config_update:
self._trigger_hook('config_changed', config_update)
def _quit(self):
self._stop()
return True
def _toggle_output(self):
self._set_output(not self._is_running)
def _set_output(self, enabled):
if enabled == self._is_running:
return
self._is_running = enabled
if enabled:
self._translator.set_state(self._running_state)
else:
self._translator.clear_state()
if self._machine is not None:
self._machine.set_suppression(enabled)
self._trigger_hook('output_changed', enabled)
def _machine_state_callback(self, machine_state):
self._same_thread_hook(self._on_machine_state_changed, machine_state)
def _machine_stroke_callback(self, steno_keys):
self._same_thread_hook(self._on_stroked, steno_keys)
@with_lock
def _on_machine_state_changed(self, machine_state):
assert machine_state is not None
self._machine_state = machine_state
machine_type = self._config.get_machine_type()
self._trigger_hook('machine_state_changed', machine_type,
machine_state)
def _consume_engine_command(self, command):
# The first commands can be used whether plover has output enabled or not.
if command == 'RESUME':
self._set_output(True)
return True
elif command == 'TOGGLE':
self._toggle_output()
return True
elif command == 'QUIT':
self._trigger_hook('quit')
return True
if not self._is_running:
return False
# These commands can only be run when plover has output enabled.
if command == 'SUSPEND':
self._set_output(False)
elif command == 'CONFIGURE':
self._trigger_hook('configure')
elif command == 'FOCUS':
self._trigger_hook('focus')
elif command == 'ADD_TRANSLATION':
self._trigger_hook('add_translation')
elif command == 'LOOKUP':
self._trigger_hook('lookup')
return False
def _on_stroked(self, steno_keys):
stroke = Stroke(steno_keys)
log.stroke(stroke)
self._translator.translate(stroke)
self._trigger_hook('stroked', stroke)
def _on_translated(self, old, new):
if not self._is_running:
return
self._trigger_hook('translated', old, new)
def send_backspaces(self, b):
if not self._is_running:
return
self._keyboard_emulation.send_backspaces(b)
self._trigger_hook('send_backspaces', b)
def send_string(self, s):
if not self._is_running:
return
self._keyboard_emulation.send_string(s)
self._trigger_hook('send_string', s)
def send_key_combination(self, c):
if not self._is_running:
return
self._keyboard_emulation.send_key_combination(c)
self._trigger_hook('send_key_combination', c)
def send_engine_command(self, command):
suppress = not self._is_running
suppress &= self._consume_engine_command(command)
if suppress:
self._machine.suppress_last_stroke(
self._keyboard_emulation.send_backspaces)
def toggle_output(self):
self._same_thread_hook(self._toggle_output)
def set_output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def machine_state(self):
return self._machine_state
@property
@with_lock
def output(self):
return self._is_running
@output.setter
def output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def config(self):
return self._config.as_dict()
@config.setter
@with_lock
def config(self, update):
self._same_thread_hook(self._update, config_update=update)
def reset_machine(self):
self._same_thread_hook(self._update, reset_machine=True)
def load_config(self):
try:
with open(self._config.target_file, 'rb') as f:
self._config.load(f)
except Exception:
log.error('loading configuration failed, reseting to default',
exc_info=True)
self._config.clear()
return False
return True
def start(self):
self._same_thread_hook(self._start)
def quit(self):
self._same_thread_hook(self._quit)
@property
@with_lock
def machines(self):
return sorted(machine_registry.get_all_names())
@with_lock
def machine_specific_options(self, machine_type):
return self._config.get_machine_specific_options(machine_type)
@with_lock
def system_keymap(self, machine_type):
return self._config.get_system_keymap(machine_type)
@with_lock
def lookup(self, translation):
return self._dictionaries.lookup(translation)
@with_lock
def raw_lookup(self, translation):
return self._dictionaries.raw_lookup(translation)
@with_lock
def reverse_lookup(self, translation):
matches = self._dictionaries.reverse_lookup(translation)
return [] if matches is None else matches
@with_lock
def casereverse_lookup(self, translation):
matches = self._dictionaries.casereverse_lookup(translation)
return set() if matches is None else matches
@with_lock
def add_dictionary_filter(self, dictionary_filter):
self._dictionaries.add_filter(dictionary_filter)
@with_lock
def remove_dictionary_filter(self, dictionary_filter):
self._dictionaries.remove_filter(dictionary_filter)
@with_lock
def get_suggestions(self, translation):
return self._suggestions.find(translation)
@property
@with_lock
def translator_state(self):
return self._translator.get_state()
@translator_state.setter
@with_lock
def translator_state(self, state):
self._translator.set_state(state)
@with_lock
def clear_translator_state(self, undo=False):
if undo:
state = self._translator.get_state()
self._formatter.format(state.translations, (), None)
self._translator.clear_state()
@property
@with_lock
def starting_stroke_state(self):
return StartingStrokeState(self._formatter.start_attached,
self._formatter.start_capitalized)
@starting_stroke_state.setter
@with_lock
def starting_stroke_state(self, state):
self._formatter.start_attached = state.attach
self._formatter.start_capitalized = state.capitalize
@with_lock
def add_translation(self, strokes, translation, dictionary=None):
if dictionary is None:
dictionary = self._dictionaries.dicts[0].get_path()
self._dictionaries.set(strokes, translation, dictionary=dictionary)
self._dictionaries.save(path_list=(dictionary, ))
@property
@with_lock
def dictionaries(self):
return self._dictionaries
# Hooks.
def _trigger_hook(self, hook, *args, **kwargs):
for callback in self._hooks[hook]:
try:
callback(*args, **kwargs)
except Exception:
log.error('hook %r callback %r failed',
hook,
callback,
exc_info=True)
@with_lock
def hook_connect(self, hook, callback):
self._hooks[hook].append(callback)
@with_lock
def hook_disconnect(self, hook, callback):
self._hooks[hook].remove(callback)
class StenoEngine:
HOOKS = '''
stroked
translated
machine_state_changed
output_changed
config_changed
dictionaries_loaded
send_string
send_backspaces
send_key_combination
add_translation
focus
configure
lookup
quit
'''.split()
def __init__(self, config, keyboard_emulation):
self._config = config
self._is_running = False
self._queue = Queue()
self._lock = threading.RLock()
self._machine = None
self._machine_state = None
self._machine_params = MachineParams(None, None, None)
self._formatter = Formatter()
self._formatter.set_output(self)
self._formatter.add_listener(self._on_translated)
self._translator = Translator()
self._translator.add_listener(log.translation)
self._translator.add_listener(self._formatter.format)
self._dictionaries = self._translator.get_dictionary()
self._dictionaries_manager = DictionaryLoadingManager()
self._running_state = self._translator.get_state()
self._keyboard_emulation = keyboard_emulation
self._hooks = {hook: [] for hook in self.HOOKS}
self._running_extensions = {}
def __enter__(self):
self._lock.__enter__()
return self
def __exit__(self, exc_type, exc_value, traceback):
self._lock.__exit__(exc_type, exc_value, traceback)
def _in_engine_thread(self):
raise NotImplementedError()
def _same_thread_hook(self, func, *args, **kwargs):
if self._in_engine_thread():
func(*args, **kwargs)
else:
self._queue.put((func, args, kwargs))
def run(self):
while True:
func, args, kwargs = self._queue.get()
try:
with self._lock:
if func(*args, **kwargs):
break
except Exception:
log.error('engine %s failed', func.__name__[1:], exc_info=True)
def _stop(self):
self._stop_extensions(self._running_extensions.keys())
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
def _start(self):
self._set_output(self._config['auto_start'])
self._update(full=True)
def _set_dictionaries(self, dictionaries):
def dictionaries_changed(l1, l2):
if len(l1) != len(l2):
return True
for d1, d2 in zip(l1, l2):
if d1 is not d2:
return True
return False
if not dictionaries_changed(dictionaries, self._dictionaries.dicts):
# No change.
return
self._dictionaries = StenoDictionaryCollection(dictionaries)
self._translator.set_dictionary(self._dictionaries)
self._trigger_hook('dictionaries_loaded', self._dictionaries)
def _update(self, config_update=None, full=False, reset_machine=False):
original_config = self._config.as_dict()
# Update configuration.
if config_update is not None:
self._config.update(**config_update)
config = self._config.as_dict()
else:
config = original_config
# Create configuration update.
if full:
config_update = config
else:
config_update = {
option: value
for option, value in config.items()
if value != original_config[option]
}
# Update logging.
log.set_stroke_filename(config['log_file_name'])
log.enable_stroke_logging(config['enable_stroke_logging'])
log.enable_translation_logging(config['enable_translation_logging'])
# Update output.
self._formatter.set_space_placement(config['space_placement'])
self._formatter.start_attached = config['start_attached']
self._formatter.start_capitalized = config['start_capitalized']
self._translator.set_min_undo_length(config['undo_levels'])
# Update system.
system_name = config['system_name']
if system.NAME != system_name:
log.info('loading system: %s', system_name)
system.setup(system_name)
# Update machine.
update_keymap = False
start_machine = False
machine_params = MachineParams(config['machine_type'],
config['machine_specific_options'],
config['system_keymap'])
# Do not reset if only the keymap changed.
if self._machine_params is None or \
self._machine_params.type != machine_params.type or \
self._machine_params.options != machine_params.options:
reset_machine = True
if reset_machine:
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
machine_type = config['machine_type']
machine_options = config['machine_specific_options']
machine_class = registry.get_plugin('machine', machine_type).obj
log.info('setting machine: %s', machine_type)
self._machine = machine_class(machine_options)
self._machine.set_suppression(self._is_running)
self._machine.add_state_callback(self._machine_state_callback)
self._machine.add_stroke_callback(self._machine_stroke_callback)
self._machine_params = machine_params
update_keymap = True
start_machine = True
elif self._machine is not None:
update_keymap = 'system_keymap' in config_update
if update_keymap:
machine_keymap = config['system_keymap']
if machine_keymap is not None:
self._machine.set_keymap(machine_keymap)
if start_machine:
self._machine.start_capture()
# Update running extensions.
enabled_extensions = config['enabled_extensions']
running_extensions = set(self._running_extensions)
self._stop_extensions(running_extensions - enabled_extensions)
self._start_extensions(enabled_extensions - running_extensions)
# Trigger `config_changed` hook.
if config_update:
self._trigger_hook('config_changed', config_update)
# Update dictionaries.
config_dictionaries = OrderedDict(
(d.path, d) for d in config['dictionaries'])
copy_default_dictionaries(config_dictionaries.keys())
# Start by unloading outdated dictionaries.
self._dictionaries_manager.unload_outdated()
self._set_dictionaries([
d for d in self._dictionaries.dicts
if d.path in config_dictionaries and \
d.path in self._dictionaries_manager
])
# And then (re)load all dictionaries.
dictionaries = []
for result in self._dictionaries_manager.load(
config_dictionaries.keys()):
if isinstance(result, DictionaryLoaderException):
d = ErroredDictionary(result.path, result.exception)
# Only show an error if it's new.
if d != self._dictionaries.get(result.path):
log.error('loading dictionary `%s` failed: %s',
shorten_path(result.path), str(result.exception))
else:
d = result
d.enabled = config_dictionaries[d.path].enabled
dictionaries.append(d)
self._set_dictionaries(dictionaries)
def _start_extensions(self, extension_list):
for extension_name in extension_list:
log.info('starting `%s` extension', extension_name)
try:
extension = registry.get_plugin('extension',
extension_name).obj(self)
extension.start()
except Exception:
log.error('initializing extension `%s` failed',
extension_name,
exc_info=True)
else:
self._running_extensions[extension_name] = extension
def _stop_extensions(self, extension_list):
for extension_name in list(extension_list):
log.info('stopping `%s` extension', extension_name)
extension = self._running_extensions.pop(extension_name)
extension.stop()
del extension
def _quit(self, code):
self._stop()
self.code = code
self._trigger_hook('quit')
return True
def _toggle_output(self):
self._set_output(not self._is_running)
def _set_output(self, enabled):
if enabled == self._is_running:
return
self._is_running = enabled
if enabled:
self._translator.set_state(self._running_state)
else:
self._translator.clear_state()
if self._machine is not None:
self._machine.set_suppression(enabled)
self._trigger_hook('output_changed', enabled)
def _machine_state_callback(self, machine_state):
self._same_thread_hook(self._on_machine_state_changed, machine_state)
def _machine_stroke_callback(self, steno_keys):
self._same_thread_hook(self._on_stroked, steno_keys)
@with_lock
def _on_machine_state_changed(self, machine_state):
assert machine_state is not None
self._machine_state = machine_state
machine_type = self._config['machine_type']
self._trigger_hook('machine_state_changed', machine_type,
machine_state)
def _consume_engine_command(self, command):
# The first commands can be used whether plover has output enabled or not.
if command == 'RESUME':
self._set_output(True)
return True
elif command == 'TOGGLE':
self._toggle_output()
return True
elif command == 'QUIT':
self.quit()
return True
if not self._is_running:
return False
# These commands can only be run when plover has output enabled.
if command == 'SUSPEND':
self._set_output(False)
elif command == 'CONFIGURE':
self._trigger_hook('configure')
elif command == 'FOCUS':
self._trigger_hook('focus')
elif command == 'ADD_TRANSLATION':
self._trigger_hook('add_translation')
elif command == 'LOOKUP':
self._trigger_hook('lookup')
else:
command_args = command.split(':', 1)
command_fn = registry.get_plugin('command', command_args[0]).obj
command_fn(self, command_args[1] if len(command_args) == 2 else '')
return False
def _on_stroked(self, steno_keys):
stroke = Stroke(steno_keys)
log.stroke(stroke)
self._translator.translate(stroke)
self._trigger_hook('stroked', stroke)
def _on_translated(self, old, new):
if not self._is_running:
return
self._trigger_hook('translated', old, new)
def send_backspaces(self, b):
if not self._is_running:
return
self._keyboard_emulation.send_backspaces(b)
self._trigger_hook('send_backspaces', b)
def send_string(self, s):
if not self._is_running:
return
self._keyboard_emulation.send_string(s)
self._trigger_hook('send_string', s)
def send_key_combination(self, c):
if not self._is_running:
return
self._keyboard_emulation.send_key_combination(c)
self._trigger_hook('send_key_combination', c)
def send_engine_command(self, command):
suppress = not self._is_running
suppress &= self._consume_engine_command(command)
if suppress:
self._machine.suppress_last_stroke(
self._keyboard_emulation.send_backspaces)
def toggle_output(self):
self._same_thread_hook(self._toggle_output)
def set_output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def machine_state(self):
return self._machine_state
@property
@with_lock
def output(self):
return self._is_running
@output.setter
def output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def config(self):
return self._config.as_dict()
@config.setter
def config(self, update):
self._same_thread_hook(self._update, config_update=update)
@with_lock
def __getitem__(self, setting):
return self._config[setting]
def __setitem__(self, setting, value):
self.config = {setting: value}
def reset_machine(self):
self._same_thread_hook(self._update, reset_machine=True)
def load_config(self):
try:
with open(self._config.target_file, 'rb') as f:
self._config.load(f)
except Exception:
log.error('loading configuration failed, resetting to default',
exc_info=True)
self._config.clear()
return False
return True
def start(self):
self._same_thread_hook(self._start)
def quit(self, code=0):
# We need to go through the queue, even when already called
# from the engine thread so _quit's return code does break
# the thread out of its main loop.
self._queue.put((self._quit, (code, ), {}))
def restart(self):
self.quit(-1)
def join(self):
return self.code
@with_lock
def lookup(self, translation):
return self._dictionaries.lookup('/'.join(translation))
@with_lock
def raw_lookup(self, translation):
return self._dictionaries.raw_lookup('/'.join(translation))
@with_lock
def reverse_lookup(self, translation):
matches = self._dictionaries.reverse_lookup(translation)
return [] if matches is None else matches
@with_lock
def casereverse_lookup(self, translation):
matches = self._dictionaries.casereverse_lookup(translation)
return set() if matches is None else matches
@with_lock
def add_dictionary_filter(self, dictionary_filter):
self._dictionaries.add_filter(dictionary_filter)
@with_lock
def remove_dictionary_filter(self, dictionary_filter):
self._dictionaries.remove_filter(dictionary_filter)
@with_lock
def get_suggestions(self, translation, **kwargs):
return Suggestions(self._dictionaries).find(translation, **kwargs)
@property
@with_lock
def translator_state(self):
return self._translator.get_state()
@translator_state.setter
@with_lock
def translator_state(self, state):
self._translator.set_state(state)
@with_lock
def clear_translator_state(self, undo=False):
if undo:
state = self._translator.get_state()
self._formatter.format(state.translations, (), None)
self._translator.clear_state()
@property
@with_lock
def starting_stroke_state(self):
return StartingStrokeState(self._formatter.start_attached,
self._formatter.start_capitalized)
@starting_stroke_state.setter
@with_lock
def starting_stroke_state(self, state):
self._formatter.start_attached = state.attach
self._formatter.start_capitalized = state.capitalize
@with_lock
def add_translation(self, strokes, translation, dictionary_path=None):
if dictionary_path is None:
dictionary_path = self._dictionaries.first_writable().path
self._dictionaries.set('/'.join(strokes),
translation,
path=dictionary_path)
self._dictionaries.save(path_list=(dictionary_path, ))
@property
@with_lock
def dictionaries(self):
return self._dictionaries
# Hooks.
def _trigger_hook(self, hook, *args, **kwargs):
for callback in self._hooks[hook]:
try:
callback(*args, **kwargs)
except Exception:
log.error('hook %r callback %r failed',
hook,
callback,
exc_info=True)
@with_lock
def hook_connect(self, hook, callback):
self._hooks[hook].append(callback)
@with_lock
def hook_disconnect(self, hook, callback):
self._hooks[hook].remove(callback)
class StenoEngine(object):
HOOKS = """
stroked
translated
machine_state_changed
output_changed
config_changed
send_string
send_backspaces
send_key_combination
add_translation
focus
configure
lookup
quit
""".split()
def __init__(self, config, keyboard_emulation):
self._config = config
self._is_running = False
self._queue = Queue()
self._lock = threading.RLock()
self._machine = None
self._machine_state = None
self._machine_params = MachineParams(None, None, None)
self._formatter = Formatter()
self._formatter.set_output(self)
self._formatter.add_listener(self._on_translated)
self._translator = Translator()
self._translator.add_listener(log.translation)
self._translator.add_listener(self._formatter.format)
self._dictionaries = self._translator.get_dictionary()
self._dictionaries_manager = DictionaryLoadingManager()
self._running_state = self._translator.get_state()
self._suggestions = Suggestions(self._dictionaries)
self._keyboard_emulation = keyboard_emulation
self._hooks = {hook: [] for hook in self.HOOKS}
def __enter__(self):
self._lock.__enter__()
return self
def __exit__(self, exc_type, exc_value, traceback):
self._lock.__exit__(exc_type, exc_value, traceback)
def _in_engine_thread(self):
raise NotImplementedError()
def _same_thread_hook(self, func, *args, **kwargs):
if self._in_engine_thread():
func(*args, **kwargs)
else:
self._queue.put((func, args, kwargs))
def run(self):
while True:
func, args, kwargs = self._queue.get()
try:
with self._lock:
if func(*args, **kwargs):
break
except Exception:
log.error("engine %s failed", func.__name__[1:], exc_info=True)
def _stop(self):
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
def _start(self):
self._set_output(self._config.get_auto_start())
self._update(full=True)
def _update(self, config_update=None, full=False, reset_machine=False):
original_config = self._config.as_dict()
# Update configuration.
if config_update is not None:
self._config.update(**config_update)
config = self._config.as_dict()
else:
config = original_config
# Create configuration update.
if full:
config_update = config
else:
config_update = {option: value for option, value in config.items() if value != original_config[option]}
if "machine_type" in config_update:
for opt in ("machine_specific_options", "system_keymap"):
config_update[opt] = config[opt]
# Update logging.
log.set_stroke_filename(config["log_file_name"])
log.enable_stroke_logging(config["enable_stroke_logging"])
log.enable_translation_logging(config["enable_translation_logging"])
# Update output.
self._formatter.set_space_placement(config["space_placement"])
self._formatter.start_attached = config["start_attached"]
self._formatter.start_capitalized = config["start_capitalized"]
self._translator.set_min_undo_length(config["undo_levels"])
# Update system.
system_name = config["system_name"]
if system.NAME != system_name:
log.info("loading system: %s", system_name)
system.setup(system_name)
# Update machine.
update_keymap = False
start_machine = False
machine_params = MachineParams(
config["machine_type"], config["machine_specific_options"], config["system_keymap"]
)
if reset_machine or machine_params != self._machine_params:
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
machine_type = config["machine_type"]
machine_options = config["machine_specific_options"]
try:
machine_class = registry.get_plugin("machine", machine_type).resolve()
except Exception as e:
raise InvalidConfigurationError(str(e))
log.info("setting machine: %s", machine_type)
self._machine = machine_class(machine_options)
self._machine.set_suppression(self._is_running)
self._machine.add_state_callback(self._machine_state_callback)
self._machine.add_stroke_callback(self._machine_stroke_callback)
self._machine_params = machine_params
update_keymap = True
start_machine = True
elif self._machine is not None:
update_keymap = "system_keymap" in config_update
if update_keymap:
machine_keymap = config["system_keymap"]
if machine_keymap is not None:
self._machine.set_keymap(machine_keymap)
if start_machine:
self._machine.start_capture()
# Update dictionaries.
dictionaries_files = config["dictionary_file_names"]
copy_default_dictionaries(dictionaries_files)
dictionaries = self._dictionaries_manager.load(dictionaries_files)
self._dictionaries.set_dicts(dictionaries)
# Trigger `config_changed` hook.
if config_update:
self._trigger_hook("config_changed", config_update)
def _quit(self):
self._stop()
return True
def _toggle_output(self):
self._set_output(not self._is_running)
def _set_output(self, enabled):
if enabled == self._is_running:
return
self._is_running = enabled
if enabled:
self._translator.set_state(self._running_state)
else:
self._translator.clear_state()
if self._machine is not None:
self._machine.set_suppression(enabled)
self._trigger_hook("output_changed", enabled)
def _machine_state_callback(self, machine_state):
self._same_thread_hook(self._on_machine_state_changed, machine_state)
def _machine_stroke_callback(self, steno_keys):
self._same_thread_hook(self._on_stroked, steno_keys)
@with_lock
def _on_machine_state_changed(self, machine_state):
assert machine_state is not None
self._machine_state = machine_state
machine_type = self._config.get_machine_type()
self._trigger_hook("machine_state_changed", machine_type, machine_state)
def _consume_engine_command(self, command):
# The first commands can be used whether plover has output enabled or not.
if command == "RESUME":
self._set_output(True)
return True
elif command == "TOGGLE":
self._toggle_output()
return True
elif command == "QUIT":
self._trigger_hook("quit")
return True
if not self._is_running:
return False
# These commands can only be run when plover has output enabled.
if command == "SUSPEND":
self._set_output(False)
elif command == "CONFIGURE":
self._trigger_hook("configure")
elif command == "FOCUS":
self._trigger_hook("focus")
elif command == "ADD_TRANSLATION":
self._trigger_hook("add_translation")
elif command == "LOOKUP":
self._trigger_hook("lookup")
else:
command_args = command.split(":", 2)
command_fn = registry.get_plugin("command", command_args[0]).resolve()
command_fn(self, command_args[1] if len(command_args) == 2 else "")
return False
def _on_stroked(self, steno_keys):
stroke = Stroke(steno_keys)
log.stroke(stroke)
self._translator.translate(stroke)
self._trigger_hook("stroked", stroke)
def _on_translated(self, old, new):
if not self._is_running:
return
self._trigger_hook("translated", old, new)
def send_backspaces(self, b):
if not self._is_running:
return
self._keyboard_emulation.send_backspaces(b)
self._trigger_hook("send_backspaces", b)
def send_string(self, s):
if not self._is_running:
return
self._keyboard_emulation.send_string(s)
self._trigger_hook("send_string", s)
def send_key_combination(self, c):
if not self._is_running:
return
self._keyboard_emulation.send_key_combination(c)
self._trigger_hook("send_key_combination", c)
def send_engine_command(self, command):
suppress = not self._is_running
suppress &= self._consume_engine_command(command)
if suppress:
self._machine.suppress_last_stroke(self._keyboard_emulation.send_backspaces)
def toggle_output(self):
self._same_thread_hook(self._toggle_output)
def set_output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def machine_state(self):
return self._machine_state
@property
@with_lock
def output(self):
return self._is_running
@output.setter
def output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def config(self):
return self._config.as_dict()
@config.setter
def config(self, update):
self._same_thread_hook(self._update, config_update=update)
def reset_machine(self):
self._same_thread_hook(self._update, reset_machine=True)
def load_config(self):
try:
with open(self._config.target_file, "rb") as f:
self._config.load(f)
except Exception:
log.error("loading configuration failed, reseting to default", exc_info=True)
self._config.clear()
return False
return True
def start(self):
self._same_thread_hook(self._start)
def quit(self):
self._same_thread_hook(self._quit)
@with_lock
def list_plugins(self, plugin_type):
return sorted(registry.list_plugins(plugin_type))
@with_lock
def machine_specific_options(self, machine_type):
return self._config.get_machine_specific_options(machine_type)
@with_lock
def system_keymap(self, machine_type, system_name):
return self._config.get_system_keymap(machine_type, system_name)
@with_lock
def lookup(self, translation):
return self._dictionaries.lookup(translation)
@with_lock
def raw_lookup(self, translation):
return self._dictionaries.raw_lookup(translation)
@with_lock
def reverse_lookup(self, translation):
matches = self._dictionaries.reverse_lookup(translation)
return [] if matches is None else matches
@with_lock
def casereverse_lookup(self, translation):
matches = self._dictionaries.casereverse_lookup(translation)
return set() if matches is None else matches
@with_lock
def add_dictionary_filter(self, dictionary_filter):
self._dictionaries.add_filter(dictionary_filter)
@with_lock
def remove_dictionary_filter(self, dictionary_filter):
self._dictionaries.remove_filter(dictionary_filter)
@with_lock
def get_suggestions(self, translation):
return self._suggestions.find(translation)
@property
@with_lock
def translator_state(self):
return self._translator.get_state()
@translator_state.setter
@with_lock
def translator_state(self, state):
self._translator.set_state(state)
@with_lock
def clear_translator_state(self, undo=False):
if undo:
state = self._translator.get_state()
self._formatter.format(state.translations, (), None)
self._translator.clear_state()
@property
@with_lock
def starting_stroke_state(self):
return StartingStrokeState(self._formatter.start_attached, self._formatter.start_capitalized)
@starting_stroke_state.setter
@with_lock
def starting_stroke_state(self, state):
self._formatter.start_attached = state.attach
self._formatter.start_capitalized = state.capitalize
@with_lock
def add_translation(self, strokes, translation, dictionary=None):
if dictionary is None:
dictionary = self._dictionaries.dicts[0].get_path()
self._dictionaries.set(strokes, translation, dictionary=dictionary)
self._dictionaries.save(path_list=(dictionary,))
@property
@with_lock
def dictionaries(self):
return self._dictionaries
# Hooks.
def _trigger_hook(self, hook, *args, **kwargs):
for callback in self._hooks[hook]:
try:
callback(*args, **kwargs)
except Exception:
log.error("hook %r callback %r failed", hook, callback, exc_info=True)
@with_lock
def hook_connect(self, hook, callback):
self._hooks[hook].append(callback)
@with_lock
def hook_disconnect(self, hook, callback):
self._hooks[hook].remove(callback)
class StenoEngine(object):
HOOKS = '''
stroked
translated
machine_state_changed
output_changed
config_changed
send_string
send_backspaces
send_key_combination
add_translation
focus
configure
lookup
quit
'''.split()
def __init__(self, config, keyboard_emulation):
self._config = config
self._is_running = False
self._queue = Queue()
self._lock = threading.RLock()
self._machine = None
self._machine_state = None
self._machine_params = MachineParams(None, None, None)
self._formatter = Formatter()
self._formatter.set_output(self)
self._formatter.add_listener(self._on_translated)
self._translator = Translator()
self._translator.add_listener(log.translation)
self._translator.add_listener(self._formatter.format)
self._dictionaries = self._translator.get_dictionary()
self._dictionaries_manager = DictionaryLoadingManager()
self._running_state = self._translator.get_state()
self._suggestions = Suggestions(self._dictionaries)
self._keyboard_emulation = keyboard_emulation
self._hooks = { hook: [] for hook in self.HOOKS }
def __enter__(self):
self._lock.__enter__()
return self
def __exit__(self, exc_type, exc_value, traceback):
self._lock.__exit__(exc_type, exc_value, traceback)
def _in_engine_thread(self):
raise NotImplementedError()
def _same_thread_hook(self, func, *args, **kwargs):
if self._in_engine_thread():
func(*args, **kwargs)
else:
self._queue.put((func, args, kwargs))
def run(self):
while True:
func, args, kwargs = self._queue.get()
try:
with self._lock:
if func(*args, **kwargs):
break
except Exception:
log.error('engine %s failed', func.__name__[1:], exc_info=True)
def _stop(self):
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
def _start(self):
self._set_output(self._config.get_auto_start())
copy_default_dictionaries(self._config)
self._update(full=True)
def _update(self, config_update=None, full=False, reset_machine=False):
original_config = self._config.as_dict()
# Update configuration.
if config_update is not None:
self._config.update(**config_update)
config = self._config.as_dict()
else:
config = original_config
# Create configuration update.
if full:
config_update = config
else:
config_update = {
option: value
for option, value in config.items()
if value != original_config[option]
}
if 'machine_type' in config_update:
for opt in (
'machine_specific_options',
'system_keymap',
):
config_update[opt] = config[opt]
# Update logging.
log.set_stroke_filename(config['log_file_name'])
log.enable_stroke_logging(config['enable_stroke_logging'])
log.enable_translation_logging(config['enable_translation_logging'])
# Update output.
self._formatter.set_space_placement(config['space_placement'])
self._formatter.start_attached = config['start_attached']
self._formatter.start_capitalized = config['start_capitalized']
self._translator.set_min_undo_length(config['undo_levels'])
# Update machine.
update_keymap = False
start_machine = False
machine_params = MachineParams(config['machine_type'],
config['machine_specific_options'],
config['system_keymap'])
if reset_machine or machine_params != self._machine_params:
if self._machine is not None:
self._machine.stop_capture()
self._machine = None
machine_type = config['machine_type']
machine_options = config['machine_specific_options']
try:
machine_class = machine_registry.get(machine_type)
except NoSuchMachineException as e:
raise InvalidConfigurationError(str(e))
self._machine = machine_class(machine_options)
self._machine.set_suppression(self._is_running)
self._machine.add_state_callback(self._machine_state_callback)
self._machine.add_stroke_callback(self._machine_stroke_callback)
self._machine_params = machine_params
update_keymap = True
start_machine = True
elif self._machine is not None:
update_keymap = 'system_keymap' in config_update
if update_keymap:
machine_keymap = config['system_keymap']
if machine_keymap is not None:
self._machine.set_keymap(machine_keymap)
if start_machine:
self._machine.start_capture()
# Update dictionaries.
dictionaries_files = config['dictionary_file_names']
dictionaries = self._dictionaries_manager.load(dictionaries_files)
self._dictionaries.set_dicts(dictionaries)
# Trigger `config_changed` hook.
if config_update:
self._trigger_hook('config_changed', config_update)
def _quit(self):
self._stop()
return True
def _toggle_output(self):
self._set_output(not self._is_running)
def _set_output(self, enabled):
if enabled == self._is_running:
return
self._is_running = enabled
if enabled:
self._translator.set_state(self._running_state)
else:
self._translator.clear_state()
if self._machine is not None:
self._machine.set_suppression(enabled)
self._trigger_hook('output_changed', enabled)
def _machine_state_callback(self, machine_state):
self._same_thread_hook(self._on_machine_state_changed, machine_state)
def _machine_stroke_callback(self, steno_keys):
self._same_thread_hook(self._on_stroked, steno_keys)
@with_lock
def _on_machine_state_changed(self, machine_state):
assert machine_state is not None
self._machine_state = machine_state
machine_type = self._config.get_machine_type()
self._trigger_hook('machine_state_changed', machine_type, machine_state)
def _consume_engine_command(self, command):
# The first commands can be used whether plover has output enabled or not.
if command == 'RESUME':
self._set_output(True)
return True
elif command == 'TOGGLE':
self._toggle_output()
return True
elif command == 'QUIT':
self._trigger_hook('quit')
return True
if not self._is_running:
return False
# These commands can only be run when plover has output enabled.
if command == 'SUSPEND':
self._set_output(False)
elif command == 'CONFIGURE':
self._trigger_hook('configure')
elif command == 'FOCUS':
self._trigger_hook('focus')
elif command == 'ADD_TRANSLATION':
self._trigger_hook('add_translation')
elif command == 'LOOKUP':
self._trigger_hook('lookup')
return False
def _on_stroked(self, steno_keys):
stroke = Stroke(steno_keys)
log.stroke(stroke)
self._translator.translate(stroke)
self._trigger_hook('stroked', stroke)
def _on_translated(self, old, new):
if not self._is_running:
return
self._trigger_hook('translated', old, new)
def send_backspaces(self, b):
if not self._is_running:
return
self._keyboard_emulation.send_backspaces(b)
self._trigger_hook('send_backspaces', b)
def send_string(self, s):
if not self._is_running:
return
self._keyboard_emulation.send_string(s)
self._trigger_hook('send_string', s)
def send_key_combination(self, c):
if not self._is_running:
return
self._keyboard_emulation.send_key_combination(c)
self._trigger_hook('send_key_combination', c)
def send_engine_command(self, command):
suppress = not self._is_running
suppress &= self._consume_engine_command(command)
if suppress:
self._machine.suppress_last_stroke(self._keyboard_emulation.send_backspaces)
def toggle_output(self):
self._same_thread_hook(self._toggle_output)
def set_output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def machine_state(self):
return self._machine_state
@property
@with_lock
def output(self):
return self._is_running
@output.setter
def output(self, enabled):
self._same_thread_hook(self._set_output, enabled)
@property
@with_lock
def config(self):
return self._config.as_dict()
@config.setter
@with_lock
def config(self, update):
self._same_thread_hook(self._update, config_update=update)
def reset_machine(self):
self._same_thread_hook(self._update, reset_machine=True)
def load_config(self):
try:
with open(self._config.target_file, 'rb') as f:
self._config.load(f)
except Exception:
log.error('loading configuration failed, reseting to default', exc_info=True)
self._config.clear()
return False
return True
def start(self):
self._same_thread_hook(self._start)
def quit(self):
self._same_thread_hook(self._quit)
@property
@with_lock
def machines(self):
return sorted(machine_registry.get_all_names())
@with_lock
def machine_specific_options(self, machine_type):
return self._config.get_machine_specific_options(machine_type)
@with_lock
def system_keymap(self, machine_type):
return self._config.get_system_keymap(machine_type)
@with_lock
def lookup(self, translation):
return self._dictionaries.lookup(translation)
@with_lock
def raw_lookup(self, translation):
return self._dictionaries.raw_lookup(translation)
@with_lock
def reverse_lookup(self, translation):
matches = self._dictionaries.reverse_lookup(translation)
return [] if matches is None else matches
@with_lock
def casereverse_lookup(self, translation):
matches = self._dictionaries.casereverse_lookup(translation)
return set() if matches is None else matches
@with_lock
def add_dictionary_filter(self, dictionary_filter):
self._dictionaries.add_filter(dictionary_filter)
@with_lock
def remove_dictionary_filter(self, dictionary_filter):
self._dictionaries.remove_filter(dictionary_filter)
@with_lock
def get_suggestions(self, translation):
return self._suggestions.find(translation)
@property
@with_lock
def translator_state(self):
return self._translator.get_state()
@translator_state.setter
@with_lock
def translator_state(self, state):
self._translator.set_state(state)
@with_lock
def clear_translator_state(self, undo=False):
if undo:
state = self._translator.get_state()
self._formatter.format(state.translations, (), None)
self._translator.clear_state()
@property
@with_lock
def starting_stroke_state(self):
return StartingStrokeState(self._formatter.start_attached,
self._formatter.start_capitalized)
@starting_stroke_state.setter
@with_lock
def starting_stroke_state(self, state):
self._formatter.start_attached = state.attach
self._formatter.start_capitalized = state.capitalize
@with_lock
def add_translation(self, strokes, translation, dictionary=None):
if dictionary is None:
dictionary = self._dictionaries.dicts[0].get_path()
self._dictionaries.set(strokes, translation,
dictionary=dictionary)
self._dictionaries.save(path_list=(dictionary,))
@property
@with_lock
def dictionaries(self):
return self._dictionaries
# Hooks.
def _trigger_hook(self, hook, *args, **kwargs):
for callback in self._hooks[hook]:
try:
callback(*args, **kwargs)
except Exception:
log.error('hook %r callback %r failed',
hook, callback,
exc_info=True)
@with_lock
def hook_connect(self, hook, callback):
self._hooks[hook].append(callback)
@with_lock
def hook_disconnect(self, hook, callback):
self._hooks[hook].remove(callback)
