def math_error(errnum):
""" Write an error message; only break execution if a handler is active. """
if state.basic_state.on_error:
# also raises exception in error_handle_mode! in that case, prints a normal error message
raise(error.RunError(errnum))
else:
# write a message & continue as normal
# start_line() ?
errstream.write_line(error.get_message(errnum)) # no space, no line number
def math_error(errnum):
""" Write an error message; only break execution if a handler is active. """
if state.basic_state.on_error:
# also raises exception in error_handle_mode! in that case, prints a normal error message
raise(error.RunError(errnum))
else:
# write a message & continue as normal
# start_line() ?
errstream.write_line(error.get_message(errnum)) # no space, no line number
def handle_error(s):
""" Handle a BASIC error through trapping or error message. """
error.set_err(s)
# not handled by ON ERROR, stop execution
console.write_error_message(error.get_message(s.err), program.get_line_number(s.pos))
state.basic_state.error_handle_mode = False
state.basic_state.execute_mode = False
state.basic_state.input_mode = False
# special case: syntax error
if s.err == 2:
# for some reason, err is reset to zero by GW-BASIC in this case.
state.basic_state.errn = 0
if s.pos != -1:
# line edit gadget appears
state.basic_state.edit_prompt = (program.get_line_number(s.pos),
state.basic_state.bytecode.tell())
def handle_error(s):
""" Handle a BASIC error through trapping or error message. """
error.set_err(s)
# not handled by ON ERROR, stop execution
console.write_error_message(error.get_message(s.err), program.get_line_number(s.pos))
state.basic_state.error_handle_mode = False
state.basic_state.execute_mode = False
state.basic_state.input_mode = False
# special case: syntax error
if s.err == 2:
# for some reason, err is reset to zero by GW-BASIC in this case.
state.basic_state.errn = 0
if s.pos != -1:
# line edit gadget appears
state.basic_state.edit_prompt = (program.get_line_number(s.pos),
state.basic_state.bytecode.tell())
def convert():
""" Perform file format conversion. """
import program
import disk
import error
# set conversion output
# first arg, if given, is mode; second arg, if given, is outfile
mode = config.get('convert')
infile = (config.get(0) or config.get('run') or config.get('load'))
outfile = config.get(1)
# keep uppercase first letter
mode = mode[0].upper() if mode else 'A'
# load & save in different format
try:
prog_infile = None
if infile:
prog_infile = open_native_or_dos_filename(infile)
elif plat.has_stdin:
# use StringIO buffer for seekability
in_buffer = StringIO(sys.stdin.read())
prog_infile = disk.open_diskfile(in_buffer,
filetype='ABP',
mode='I')
if prog_infile:
with prog_infile:
program.load(prog_infile)
prog_outfile = None
if outfile:
# on save from command-line, use exact file name
prog_outfile = disk.open_diskfile(open(outfile, 'wb'),
filetype=mode,
mode='O')
elif plat.has_stdout:
prog_outfile = disk.open_diskfile(sys.stdout,
filetype=mode,
mode='O')
if prog_outfile:
with prog_outfile:
program.save(prog_outfile)
except error.RunError as e:
logging.error(error.get_message(e.err))
except EnvironmentError as e:
logging.error(str(e))
def convert():
""" Perform file format conversion. """
import program
import disk
import error
# set conversion output
# first arg, if given, is mode; second arg, if given, is outfile
mode = config.get('convert')
infile = (config.get(0) or
config.get('run') or config.get('load'))
outfile = config.get(1)
# keep uppercase first letter
mode = mode[0].upper() if mode else 'A'
# load & save in different format
try:
prog_infile = None
if infile:
prog_infile = open_native_or_dos_filename(infile)
elif plat.has_stdin:
# use StringIO buffer for seekability
in_buffer = StringIO(sys.stdin.read())
prog_infile = disk.create_file_object(in_buffer, filetype='ABP', mode='I')
if prog_infile:
with prog_infile:
program.load(prog_infile)
prog_outfile = None
if outfile:
# on save from command-line, use exact file name
prog_outfile = disk.create_file_object(open(outfile, 'wb'), filetype=mode, mode='O')
elif plat.has_stdout:
prog_outfile = disk.create_file_object(sys.stdout, filetype=mode, mode='O')
if prog_outfile:
with prog_outfile:
program.save(prog_outfile)
except error.RunError as e:
logging.error(error.get_message(e.err))
except EnvironmentError as e:
logging.error(str(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
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)
