def clear(close_files=False, preserve_common=False, preserve_all=False, preserve_deftype=False):
""" Execute a CLEAR command. """
# Resets the stack and string space
# Clears all COMMON and user variables
var.clear_variables(preserve_common, preserve_all, preserve_deftype)
# reset random number generator
rnd.clear()
if close_files:
# close all files
devices.close_files()
# release all disk buffers (FIELD)?
disk.reset_fields()
# clear last error number (ERR) and line number (ERL)
state.basic_state.errn, state.basic_state.errp = 0, 0
# disable error trapping
state.basic_state.on_error = None
state.basic_state.error_resume = None
state.basic_state.error_handle_mode = False
# stop all sound
state.console_state.sound.stop_all_sound()
# Resets STRIG to off
state.console_state.stick.switch(False)
# disable all event trapping (resets PEN to OFF too)
state.basic_state.events.reset()
# CLEAR also dumps for_next and while_wend stacks
state.basic_state.for_next_stack = []
state.basic_state.while_wend_stack = []
# reset sound and PLAY state
state.console_state.sound.reset()
# reset DRAW state (angle, scale) and current graphics position
state.console_state.screen.drawing.reset()
# reset the DATA pointer
flow.restore()
def clear(close_files=False,
preserve_common=False,
preserve_all=False,
preserve_deftype=False):
""" Execute a CLEAR command. """
# Resets the stack and string space
# Clears all COMMON and user variables
var.clear_variables(preserve_common, preserve_all, preserve_deftype)
# reset random number generator
rnd.clear()
if close_files:
# close all files
devices.close_files()
# release all disk buffers (FIELD)?
disk.reset_fields()
# clear ERR and ERL
state.basic_state.errn, state.basic_state.errp = 0, 0
# disable error trapping
state.basic_state.on_error = None
state.basic_state.error_resume = None
# stop all sound
state.console_state.sound.stop_all_sound()
# Resets STRIG to off
state.console_state.stick.switch(False)
# disable all event trapping (resets PEN to OFF too)
state.basic_state.events.reset()
# CLEAR also dumps for_next and while_wend stacks
state.basic_state.for_next_stack = []
state.basic_state.while_wend_stack = []
# reset sound and PLAY state
state.console_state.sound.reset()
# reset DRAW state (angle, scale) and current graphics position
state.console_state.screen.drawing.reset()
def run(self, command, run, quit, wait):
""" Interactive interpreter session. """
if command:
self.store_line(command)
self.loop()
if run:
# position the pointer at start of program and enter execute mode
flow.jump(None)
state.basic_state.parse_mode = True
state.console_state.screen.cursor.reset_visibility()
try:
try:
while True:
self.loop()
if quit and state.console_state.keyb.buf.is_empty():
break
except error.Exit:
# pause before exit if requested
if wait:
signals.video_queue.put(signals.Event(signals.VIDEO_SET_CAPTION, 'Press a key to close window'))
signals.video_queue.put(signals.Event(signals.VIDEO_SHOW_CURSOR, False))
state.console_state.keyb.pause = True
# this performs a blocking keystroke read if in pause state
events.check_events()
finally:
# close interfaces
signals.video_queue.put(signals.Event(signals.VIDEO_QUIT))
signals.message_queue.put(signals.Event(signals.AUDIO_QUIT))
# persist unplayed tones in sound queue
state.console_state.tone_queue_store = [
signals.save_queue(q) for q in signals.tone_queue]
state.save()
# close files if we opened any
devices.close_files()
devices.close_devices()
except error.Reset:
# delete state if resetting
state.delete()
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
do_reset = False
backend, console = None, None
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(0) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'),
config.get('quit'))
except error.RunError as e:
msg = error.get_message(e.err)
if console and config.get('wait'):
console.write_error_message(msg, None)
if backend and backend.video:
# close terminal to avoid garbled error message
backend.video.close()
backend.video = None
logging.error(msg)
except error.Exit:
pass
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
logging.error("Unhandled exception\n%s", traceback.format_exc())
finally:
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
try:
sound.audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
import audio
do_reset = False
backend, console = None, None
exit_error = ''
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(1) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'), config.get('quit'))
except error.RunError as e:
exit_error = error.get_message(e.err)
except error.Exit:
# pause before exit if requested
if config.get('wait'):
backend.video_queue.put(backend.Event(backend.VIDEO_SET_CAPTION, 'Press a key to close window'))
backend.video_queue.put(backend.Event(backend.VIDEO_SHOW_CURSOR, False))
state.console_state.keyb.pause = True
# this performs a blocking keystroke read if in pause state
backend.check_events()
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
print traceback.print_exc()
exit_error = "Unhandled exception\n%s" % traceback.format_exc()
finally:
try:
audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
if exit_error:
logging.error(exit_error)
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
do_reset = False
backend, console = None, None
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(0) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'), config.get('quit'))
except error.RunError as e:
msg = error.get_message(e.err)
if console and config.get('wait'):
console.write_error_message(msg, None)
if backend and backend.video:
# close terminal to avoid garbled error message
backend.video.close()
backend.video = None
logging.error(msg)
except error.Exit:
pass
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
logging.error("Unhandled exception\n%s", traceback.format_exc())
finally:
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
try:
sound.audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
def start_basic():
""" Load & run programs and commands and hand over to interactive mode. """
import program
import run
import error
import state
import devices
import disk
import cassette
import reset
import sound
import audio
do_reset = False
backend, console = None, None
exit_error = ''
try:
# resume from saved emulator state if requested and available
resume = config.get('resume') and state.load()
# choose the video and sound backends
backend, console = prepare_console()
# greet, load and run only if not resuming
if resume:
# override selected settings from command line
cassette.override()
disk.override()
# suppress double prompt
if not state.basic_state.execute_mode:
state.basic_state.prompt = False
run.start('', False, config.get('quit'))
else:
# load/run program
config.options['run'] = config.get(0) or config.get('run')
prog = config.get('run') or config.get('load')
if prog:
# on load, accept capitalised versions and default extension
with open_native_or_dos_filename(prog) as progfile:
program.load(progfile)
reset.clear()
print_greeting(console)
# start the interpreter (and get out if we ran with -q)
run.start(config.get('exec'), config.get('run'),
config.get('quit'))
except error.RunError as e:
exit_error = e.message
except error.Exit:
# pause before exit if requested
if config.get('wait'):
backend.video_queue.put(
backend.Event(backend.VIDEO_SET_CAPTION,
'Press a key to close window'))
backend.video_queue.put(
backend.Event(backend.VIDEO_SHOW_CURSOR, False))
state.console_state.keyb.pause = True
# this performs a blocking keystroke read if in pause state
backend.check_events()
except error.Reset:
do_reset = True
except KeyboardInterrupt:
if config.get('debug'):
raise
except Exception as e:
exit_error = "Unhandled exception\n%s" % traceback.format_exc()
finally:
try:
audio.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing audio: %s', e)
try:
# fix the terminal on exit (important for ANSI terminals)
# and save display interface state into screen state
state.console_state.screen.close()
except (NameError, AttributeError) as e:
logging.debug('Error on closing screen: %s', e)
# delete state if resetting
if do_reset:
state.delete()
if plat.system == 'Android':
shutil.rmtree(plat.temp_dir)
else:
state.save()
try:
# close files if we opened any
devices.close_files()
except (NameError, AttributeError) as e:
logging.debug('Error on closing files: %s', e)
try:
devices.close_devices()
except (NameError, AttributeError) as e:
logging.debug('Error on closing devices: %s', e)
if exit_error:
logging.error(exit_error)