| 340 | |
| 341 | @dataclass(slots=True) |
| 342 | class _ReadlineWrapper: |
| 343 | f_in: int = -1 |
| 344 | f_out: int = -1 |
| 345 | reader: ReadlineAlikeReader | None = field(default=None, repr=False) |
| 346 | saved_history_length: int = -1 |
| 347 | startup_hook: Callback | None = None |
| 348 | config: ReadlineConfig = field(default_factory=ReadlineConfig, repr=False) |
| 349 | |
| 350 | def __post_init__(self) -> None: |
| 351 | if self.f_in == -1: |
| 352 | self.f_in = os.dup(0) |
| 353 | if self.f_out == -1: |
| 354 | self.f_out = os.dup(1) |
| 355 | |
| 356 | def get_reader(self) -> ReadlineAlikeReader: |
| 357 | if self.reader is None: |
| 358 | console = Console(self.f_in, self.f_out, encoding=ENCODING) |
| 359 | self.reader = ReadlineAlikeReader(console=console, config=self.config) |
| 360 | return self.reader |
| 361 | |
| 362 | def input(self, prompt: object = "") -> str: |
| 363 | try: |
| 364 | reader = self.get_reader() |
| 365 | except _error: |
| 366 | assert raw_input is not None |
| 367 | return raw_input(prompt) |
| 368 | prompt_str = str(prompt) |
| 369 | reader.ps1 = prompt_str |
| 370 | sys.audit("builtins.input", prompt_str) |
| 371 | result = reader.readline(startup_hook=self.startup_hook) |
| 372 | sys.audit("builtins.input/result", result) |
| 373 | return result |
| 374 | |
| 375 | def multiline_input(self, more_lines: MoreLinesCallable, ps1: str, ps2: str) -> str: |
| 376 | """Read an input on possibly multiple lines, asking for more |
| 377 | lines as long as 'more_lines(unicodetext)' returns an object whose |
| 378 | boolean value is true. |
| 379 | """ |
| 380 | reader = self.get_reader() |
| 381 | saved = reader.more_lines |
| 382 | try: |
| 383 | reader.more_lines = more_lines |
| 384 | reader.ps1 = ps1 |
| 385 | reader.ps2 = ps1 |
| 386 | reader.ps3 = ps2 |
| 387 | reader.ps4 = "" |
| 388 | with warnings.catch_warnings(action="ignore"): |
| 389 | return reader.readline() |
| 390 | finally: |
| 391 | reader.more_lines = saved |
| 392 | reader.paste_mode = False |
| 393 | |
| 394 | def parse_and_bind(self, string: str) -> None: |
| 395 | pass # XXX we don't support parsing GNU-readline-style init files |
| 396 | |
| 397 | def set_completer(self, function: Completer | None = None) -> None: |
| 398 | self.config.readline_completer = function |
| 399 | |