237 lines
8.3 KiB
Python
237 lines
8.3 KiB
Python
from typing import Any
|
|
from typing import Dict
|
|
from typing import Iterable
|
|
from typing import Mapping
|
|
from typing import Optional
|
|
from typing import Union
|
|
|
|
from prompt_toolkit.output import ColorDepth
|
|
|
|
from questionary import utils
|
|
from questionary.constants import DEFAULT_KBI_MESSAGE
|
|
from questionary.prompts import AVAILABLE_PROMPTS
|
|
from questionary.prompts import prompt_by_name
|
|
from questionary.prompts.common import print_formatted_text
|
|
|
|
|
|
class PromptParameterException(ValueError):
|
|
"""Received a prompt with a missing parameter."""
|
|
|
|
def __init__(self, message: str, errors: Optional[BaseException] = None) -> None:
|
|
# Call the base class constructor with the parameters it needs
|
|
super().__init__(f"You must provide a `{message}` value", errors)
|
|
|
|
|
|
def prompt(
|
|
questions: Union[Dict[str, Any], Iterable[Mapping[str, Any]]],
|
|
answers: Optional[Mapping[str, Any]] = None,
|
|
patch_stdout: bool = False,
|
|
true_color: bool = False,
|
|
kbi_msg: str = DEFAULT_KBI_MESSAGE,
|
|
**kwargs: Any,
|
|
) -> Dict[str, Any]:
|
|
"""Prompt the user for input on all the questions.
|
|
|
|
Catches keyboard interrupts and prints a message.
|
|
|
|
See :func:`unsafe_prompt` for possible question configurations.
|
|
|
|
Args:
|
|
questions: A list of question configs representing questions to
|
|
ask. A question config may have the following options:
|
|
|
|
* type - The type of question.
|
|
* name - An ID for the question (to identify it in the answers :obj:`dict`).
|
|
|
|
* when - Callable to conditionally show the question. This function
|
|
takes a :obj:`dict` representing the current answers.
|
|
|
|
* filter - Function that the answer is passed to. The return value of this
|
|
function is saved as the answer.
|
|
|
|
Additional options correspond to the parameter names for
|
|
particular question types.
|
|
|
|
answers: Default answers.
|
|
|
|
patch_stdout: Ensure that the prompt renders correctly if other threads
|
|
are printing to stdout.
|
|
|
|
kbi_msg: The message to be printed on a keyboard interrupt.
|
|
true_color: Use true color output.
|
|
|
|
color_depth: Color depth to use. If ``true_color`` is set to true then this
|
|
value is ignored.
|
|
|
|
type: Default ``type`` value to use in question config.
|
|
filter: Default ``filter`` value to use in question config.
|
|
name: Default ``name`` value to use in question config.
|
|
when: Default ``when`` value to use in question config.
|
|
default: Default ``default`` value to use in question config.
|
|
kwargs: Additional options passed to every question.
|
|
|
|
Returns:
|
|
Dictionary of question answers.
|
|
"""
|
|
|
|
try:
|
|
return unsafe_prompt(questions, answers, patch_stdout, true_color, **kwargs)
|
|
except KeyboardInterrupt:
|
|
print("")
|
|
print(kbi_msg)
|
|
print("")
|
|
return {}
|
|
|
|
|
|
def unsafe_prompt(
|
|
questions: Union[Dict[str, Any], Iterable[Mapping[str, Any]]],
|
|
answers: Optional[Mapping[str, Any]] = None,
|
|
patch_stdout: bool = False,
|
|
true_color: bool = False,
|
|
**kwargs: Any,
|
|
) -> Dict[str, Any]:
|
|
"""Prompt the user for input on all the questions.
|
|
|
|
Won't catch keyboard interrupts.
|
|
|
|
Args:
|
|
questions: A list of question configs representing questions to
|
|
ask. A question config may have the following options:
|
|
|
|
* type - The type of question.
|
|
* name - An ID for the question (to identify it in the answers :obj:`dict`).
|
|
|
|
* when - Callable to conditionally show the question. This function
|
|
takes a :obj:`dict` representing the current answers.
|
|
|
|
* filter - Function that the answer is passed to. The return value of this
|
|
function is saved as the answer.
|
|
|
|
Additional options correspond to the parameter names for
|
|
particular question types.
|
|
|
|
answers: Default answers.
|
|
|
|
patch_stdout: Ensure that the prompt renders correctly if other threads
|
|
are printing to stdout.
|
|
|
|
true_color: Use true color output.
|
|
|
|
color_depth: Color depth to use. If ``true_color`` is set to true then this
|
|
value is ignored.
|
|
|
|
type: Default ``type`` value to use in question config.
|
|
filter: Default ``filter`` value to use in question config.
|
|
name: Default ``name`` value to use in question config.
|
|
when: Default ``when`` value to use in question config.
|
|
default: Default ``default`` value to use in question config.
|
|
kwargs: Additional options passed to every question.
|
|
|
|
Returns:
|
|
Dictionary of question answers.
|
|
|
|
Raises:
|
|
KeyboardInterrupt: raised on keyboard interrupt
|
|
"""
|
|
|
|
if isinstance(questions, dict):
|
|
questions = [questions]
|
|
|
|
answers = dict(answers or {})
|
|
|
|
for question_config in questions:
|
|
question_config = dict(question_config)
|
|
# import the question
|
|
if "type" not in question_config:
|
|
raise PromptParameterException("type")
|
|
# every type except 'print' needs a name
|
|
if "name" not in question_config and question_config["type"] != "print":
|
|
raise PromptParameterException("name")
|
|
|
|
_kwargs = kwargs.copy()
|
|
_kwargs.update(question_config)
|
|
|
|
_type = _kwargs.pop("type")
|
|
_filter = _kwargs.pop("filter", None)
|
|
name = _kwargs.pop("name", None) if _type == "print" else _kwargs.pop("name")
|
|
when = _kwargs.pop("when", None)
|
|
|
|
if true_color:
|
|
_kwargs["color_depth"] = ColorDepth.TRUE_COLOR
|
|
|
|
if when:
|
|
# at least a little sanity check!
|
|
if callable(question_config["when"]):
|
|
try:
|
|
if not question_config["when"](answers):
|
|
continue
|
|
except Exception as exception:
|
|
raise ValueError(
|
|
f"Problem in 'when' check of " f"{name} question: {exception}"
|
|
) from exception
|
|
else:
|
|
raise ValueError(
|
|
"'when' needs to be function that accepts a dict argument"
|
|
)
|
|
|
|
# handle 'print' type
|
|
if _type == "print":
|
|
try:
|
|
message = _kwargs.pop("message")
|
|
except KeyError as e:
|
|
raise PromptParameterException("message") from e
|
|
|
|
# questions can take 'input' arg but print_formatted_text does not
|
|
# Remove 'input', if present, to avoid breaking during tests
|
|
_kwargs.pop("input", None)
|
|
|
|
print_formatted_text(message, **_kwargs)
|
|
if name:
|
|
answers[name] = None
|
|
continue
|
|
|
|
choices = question_config.get("choices")
|
|
if choices is not None and callable(choices):
|
|
calculated_choices = choices(answers)
|
|
question_config["choices"] = calculated_choices
|
|
kwargs["choices"] = calculated_choices
|
|
|
|
if _filter:
|
|
# at least a little sanity check!
|
|
if not callable(_filter):
|
|
raise ValueError(
|
|
"'filter' needs to be function that accepts an argument"
|
|
)
|
|
|
|
if callable(question_config.get("default")):
|
|
_kwargs["default"] = question_config["default"](answers)
|
|
|
|
create_question_func = prompt_by_name(_type)
|
|
|
|
if not create_question_func:
|
|
raise ValueError(
|
|
f"No question type '{_type}' found. "
|
|
f"Known question types are {', '.join(AVAILABLE_PROMPTS)}."
|
|
)
|
|
|
|
missing_args = list(utils.missing_arguments(create_question_func, _kwargs))
|
|
if missing_args:
|
|
raise PromptParameterException(missing_args[0])
|
|
|
|
question = create_question_func(**_kwargs)
|
|
|
|
answer = question.unsafe_ask(patch_stdout)
|
|
|
|
if answer is not None:
|
|
if _filter:
|
|
try:
|
|
answer = _filter(answer)
|
|
except Exception as exception:
|
|
raise ValueError(
|
|
f"Problem processing 'filter' of {name} "
|
|
f"question: {exception}"
|
|
) from exception
|
|
answers[name] = answer
|
|
|
|
return answers
|