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# -*- coding: utf8 -*- | ||
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""" | ||
clint.textui.prompt | ||
~~~~~~~~~~~~~~~~~~~ | ||
Module for simple interactive prompts handling | ||
""" | ||
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from __future__ import absolute_import | ||
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from re import match, I | ||
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def yn(prompt, default='y', batch=False): | ||
# A sanity check against default value | ||
# If not y/n then y is assumed | ||
if default not in ['y', 'n']: | ||
default = 'y' | ||
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# Let's build the prompt | ||
choicebox = '[Y/n]' if default == 'y' else '[y/N]' | ||
prompt = prompt + ' ' + choicebox + ' ' | ||
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# If input is not a yes/no variant or empty | ||
# keep asking | ||
while True: | ||
# If batch option is True then auto reply | ||
# with default input | ||
if not batch: | ||
input = raw_input(prompt).strip() | ||
else: | ||
print prompt | ||
input = '' | ||
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# If input is empty default choice is assumed | ||
# so we return True | ||
if input == '': | ||
return True | ||
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# Given 'yes' as input if default choice is y | ||
# then return True, False otherwise | ||
if match('y(?:es)?', input, I): | ||
return True if default == 'y' else False | ||
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# Given 'no' as input if default choice is n | ||
# then return True, False otherwise | ||
elif match('n(?:o)?', input, I): | ||
return True if default == 'n' else False |