98 lines
3.0 KiB
Python
98 lines
3.0 KiB
Python
|
"""Functions to collect user input.
|
||
|
|
"""
|
||
|
|
|
||
|
|
from milc import cli, format_ansi
|
||
|
|
|
||
|
|
|
||
|
|
def yesno(prompt, *args, default=None, **kwargs):
|
||
|
|
"""Displays prompt to the user and gets a yes or no response.
|
||
|
|
|
||
|
|
Returns True for a yes and False for a no.
|
||
|
|
|
||
|
|
If you add `--yes` and `--no` arguments to your program the user can answer questions by passing command line flags.
|
||
|
|
|
||
|
|
@add_argument('-y', '--yes', action='store_true', arg_only=True, help='Answer yes to all questions.')
|
||
|
|
@add_argument('-n', '--no', action='store_true', arg_only=True, help='Answer no to all questions.')
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
prompt
|
||
|
|
The prompt to present to the user. Can include ANSI and format strings like milc's `cli.print()`.
|
||
|
|
|
||
|
|
default
|
||
|
|
Whether to default to a Yes or No when the user presses enter.
|
||
|
|
|
||
|
|
None- force the user to enter Y or N
|
||
|
|
|
||
|
|
True- Default to yes
|
||
|
|
|
||
|
|
False- Default to no
|
||
|
|
"""
|
||
|
|
if not args and kwargs:
|
||
|
|
args = kwargs
|
||
|
|
|
||
|
|
if 'no' in cli.args and cli.args.no:
|
||
|
|
return False
|
||
|
|
|
||
|
|
if 'yes' in cli.args and cli.args.yes:
|
||
|
|
return True
|
||
|
|
|
||
|
|
if default is not None:
|
||
|
|
if default:
|
||
|
|
prompt = prompt + ' [Y/n] '
|
||
|
|
else:
|
||
|
|
prompt = prompt + ' [y/N] '
|
||
|
|
|
||
|
|
while True:
|
||
|
|
print()
|
||
|
|
answer = input(format_ansi(prompt % args))
|
||
|
|
print()
|
||
|
|
|
||
|
|
if not answer and prompt is not None:
|
||
|
|
return default
|
||
|
|
|
||
|
|
elif answer.lower() in ['y', 'yes']:
|
||
|
|
return True
|
||
|
|
|
||
|
|
elif answer.lower() in ['n', 'no']:
|
||
|
|
return False
|
||
|
|
|
||
|
|
|
||
|
|
def question(prompt, *args, default=None, confirm=False, answer_type=str, **kwargs):
|
||
|
|
"""Prompt the user to answer a question with a free-form input.
|
||
|
|
|
||
|
|
prompt
|
||
|
|
The prompt to present to the user. Can include ANSI and format strings like milc's `cli.print()`.
|
||
|
|
|
||
|
|
default
|
||
|
|
The value to return when the user doesn't enter any value. Use None to prompt until they enter a value.
|
||
|
|
|
||
|
|
answer_type
|
||
|
|
Specify a type function for the answer. Will re-prompt the user if the function raises any errors. Common choices here include int, float, and decimal.Decimal.
|
||
|
|
"""
|
||
|
|
if not args and kwargs:
|
||
|
|
args = kwargs
|
||
|
|
|
||
|
|
if default is not None:
|
||
|
|
prompt = '%s [%s] ' % (prompt, default)
|
||
|
|
|
||
|
|
while True:
|
||
|
|
print()
|
||
|
|
answer = input(format_ansi(prompt % args))
|
||
|
|
print()
|
||
|
|
|
||
|
|
if answer:
|
||
|
|
if confirm:
|
||
|
|
if yesno('Is the answer "%s" correct?', answer, default=True):
|
||
|
|
try:
|
||
|
|
return answer_type(answer)
|
||
|
|
except Exception as e:
|
||
|
|
cli.log.error('Could not convert answer (%s) to type %s: %s', answer, answer_type.__name__, str(e))
|
||
|
|
else:
|
||
|
|
try:
|
||
|
|
return answer_type(answer)
|
||
|
|
except Exception as e:
|
||
|
|
cli.log.error('Could not convert answer (%s) to type %s: %s', answer, answer_type.__name__, str(e))
|
||
|
|
|
||
|
|
elif default is not None:
|
||
|
|
return default
|