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# To gradually migrate to mypy we aren't setting these globally yet
# mypy: disallow_untyped_defs=True
# mypy: disallow_untyped_calls=True
importargparse
importcollections
importlogging
importsys
importcurtsies
importcurtsies.events
importcurtsies.input
importcurtsies.window
from .importargsasbpargs,translations,inspection
from .configimportConfig
from .curtsiesfrontendimportevents
from .curtsiesfrontend.coderunnerimportSystemExitFromCodeRunner
from .curtsiesfrontend.interpreterimportInterp
from .curtsiesfrontend.replimportBaseRepl
from .replimportextract_exit_value
from .translationsimport_
fromtypingimport (
Any,
Dict,
List,
Optional,
Protocol,
Tuple,
Union,
)
fromcollections.abcimportCallable,Generator,Sequence
logger=logging.getLogger(__name__)
classSupportsEventGeneration(Protocol):
defsend(
self,timeout:float|None
)->str|curtsies.events.Event|None: ...
def__iter__(self)->"SupportsEventGeneration": ...
def__next__(self)->str|curtsies.events.Event|None: ...
classFullCurtsiesRepl(BaseRepl):
def__init__(
self,
config:Config,
locals_:dict[str,Any]|None=None,
banner:str|None=None,
interp:Interp|None=None,
)->None:
self.input_generator=curtsies.input.Input(
keynames="curtsies",sigint_event=True,paste_threshold=None
)
window=curtsies.window.CursorAwareWindow(
sys.stdout,
sys.stdin,
keep_last_line=True,
hide_cursor=False,
extra_bytes_callback=self.input_generator.unget_bytes,
)
self._request_refresh_callback:Callable[[],None]= (
self.input_generator.event_trigger(events.RefreshRequestEvent)
)
self._schedule_refresh_callback= (
self.input_generator.scheduled_event_trigger(
events.ScheduledRefreshRequestEvent
)
)
self._request_reload_callback= (
self.input_generator.threadsafe_event_trigger(events.ReloadEvent)
)
self._interrupting_refresh_callback= (
self.input_generator.threadsafe_event_trigger(lambda:None)
)
self._request_undo_callback=self.input_generator.event_trigger(
events.UndoEvent
)
withself.input_generator:
pass# temp hack to get .original_stty
super().__init__(
config,
window,
locals_=locals_,
banner=banner,
interp=interp,
orig_tcattrs=self.input_generator.original_stty,
)
def_request_refresh(self)->None:
returnself._request_refresh_callback()
def_schedule_refresh(self,when:float)->None:
returnself._schedule_refresh_callback(when)
def_request_reload(self,files_modified:Sequence[str])->None:
returnself._request_reload_callback(files_modified=files_modified)
definterrupting_refresh(self)->None:
returnself._interrupting_refresh_callback()
defrequest_undo(self,n:int=1)->None:
returnself._request_undo_callback(n=n)
defget_term_hw(self)->tuple[int,int]:
returnself.window.get_term_hw()
defget_cursor_vertical_diff(self)->int:
returnself.window.get_cursor_vertical_diff()
defget_top_usable_line(self)->int:
returnself.window.top_usable_row
defon_suspend(self)->None:
self.window.__exit__(None,None,None)
self.input_generator.__exit__(None,None,None)
defafter_suspend(self)->None:
self.input_generator.__enter__()
self.window.__enter__()
self.interrupting_refresh()
defprocess_event_and_paint(
self,e:str|curtsies.events.Event|None
)->None:
"""If None is passed in, just paint the screen"""
try:
ifeisnotNone:
self.process_event(e)
except (SystemExitFromCodeRunner,SystemExit)aserr:
array,cursor_pos=self.paint(
about_to_exit=True,
user_quit=isinstance(err,SystemExitFromCodeRunner),
)
scrolled=self.window.render_to_terminal(array,cursor_pos)
self.scroll_offset+=scrolled
raise
else:
array,cursor_pos=self.paint()
scrolled=self.window.render_to_terminal(array,cursor_pos)
self.scroll_offset+=scrolled
defmainloop(
self,
interactive:bool=True,
paste:curtsies.events.PasteEvent|None=None,
)->None:
ifinteractive:
# Add custom help command
# TODO: add methods to run the code
self.initialize_interp()
# run startup file
self.process_event(events.RunStartupFileEvent())
# handle paste
ifpaste:
self.process_event(paste)
# do a display before waiting for first event
self.process_event_and_paint(None)
inputs=combined_events(self.input_generator)
whileself.module_gatherer.find_coroutine():
e=inputs.send(0)
ifeisnotNone:
self.process_event_and_paint(e)
foreininputs:
self.process_event_and_paint(e)
defmain(
args:list[str]|None=None,
locals_:dict[str,Any]|None=None,
banner:str|None=None,
welcome_message:str|None=None,
)->Any:
"""
banner is displayed directly after the version information.
welcome_message is passed on to Repl and displayed in the statusbar.
"""
translations.init()
defcurtsies_arguments(parser:argparse._ArgumentGroup)->None:
parser.add_argument(
"--paste",
"-p",
action="store_true",
help=_("start by pasting lines of a file into session"),
)
config,options,exec_args=bpargs.parse(
args,
(
_("curtsies arguments"),
_("Additional arguments specific to the curtsies-based REPL."),
curtsies_arguments,
),
)
interp=None
paste=None
exit_value:tuple[Any, ...]= ()
ifexec_args:
ifnotoptions:
raiseValueError("don't pass in exec_args without options")
ifoptions.paste:
paste=curtsies.events.PasteEvent()
encoding=inspection.get_encoding_file(exec_args[0])
withopen(exec_args[0],encoding=encoding)asf:
sourcecode=f.read()
paste.events.extend(sourcecode)
else:
try:
interp=Interp(locals=locals_)
bpargs.exec_code(interp,exec_args)
exceptSystemExitase:
exit_value=e.args
ifnotoptions.interactive:
returnextract_exit_value(exit_value)
else:
# expected for interactive sessions (vanilla python does it)
sys.path.insert(0,"")
ifnotoptions.quiet:
print(bpargs.version_banner())
ifbannerisnotNone:
print(banner)
ifwelcome_messageisNoneandnotoptions.quietandconfig.help_key:
welcome_message= (
_("Welcome to bpython!")
+" "
+_("Press <%s> for help.")%config.help_key
)
repl=FullCurtsiesRepl(config,locals_,welcome_message,interp)
try:
withrepl.input_generator:
withrepl.windowaswin:
withrepl:
repl.height,repl.width=win.t.height,win.t.width
repl.mainloop(True,paste)
except (SystemExitFromCodeRunner,SystemExit)ase:
exit_value=e.args
returnextract_exit_value(exit_value)
def_combined_events(
event_provider:SupportsEventGeneration,paste_threshold:int
)->Generator[str|curtsies.events.Event|None,float|None,None]:
"""Combines consecutive keypress events into paste events."""
timeout=yield"nonsense_event"# so send can be used immediately
queue:collections.deque=collections.deque()
whileTrue:
e=event_provider.send(timeout)
ifisinstance(e,curtsies.events.Event):
timeout=yielde
continue
elifeisNone:
timeout=yieldNone
continue
else:
queue.append(e)
e=event_provider.send(0)
whilenot (eisNoneorisinstance(e,curtsies.events.Event)):
queue.append(e)
e=event_provider.send(0)
iflen(queue)>=paste_threshold:
paste=curtsies.events.PasteEvent()
paste.events.extend(queue)
queue.clear()
timeout=yieldpaste
else:
whilelen(queue):
timeout=yieldqueue.popleft()
defcombined_events(
event_provider:SupportsEventGeneration,paste_threshold:int=3
)->SupportsEventGeneration:
g=_combined_events(event_provider,paste_threshold)
next(g)
returng
if__name__=="__main__":
sys.exit(main())