#### libremiliacr
#### Copyright(C) 2020-2024 Remilia Scarlet <remilia@posteo.jp>
####
#### This program is free software: you can redistribute it and/or modify
#### it under the terms of the GNU General Public License as published
#### the Free Software Foundation, either version 3 of the License, or
#### (at your option) any later version.
####
#### This program is distributed in the hope that it will be useful,
#### but WITHOUT ANY WARRANTY; without even the implied warranty of
#### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
#### GNU General Public License for more details.
####
#### You should have received a copy of the GNU General Public License
#### along with this program.If not, see<http:####www.gnu.org/licenses/.>
# The `RemiLib::Console` module provides various terminal-related functionality.
module RemiLib::Console
# Prints `question`, then waits for the user to respond. If `needFull` is
# true, then the user must respond with the full words `yes` or `no`. If
# `needFull` is false (the default), then they can respond with `y`, `yes`,
# `n`, or `no`.
#
# This returns true if the user responded in the affirmitive, or false
# otherwise.
def self.askYesNo(question : String, needFull : Bool = false, *, input : IO = STDIN, output : IO = STDOUT) : Bool
loop do
output << "#{question} " << (needFull ? "(yes/no)" : "(y/n)") << ": "
line = (input.gets || "").downcase
if needFull
case line
when "yes" then return true
when "no" then return false
else output << "Please answer 'yes' or 'no'\n"
end
else
case line
when "yes", "y" then return true
when "no", "n" then return false
else output << "Please answer 'y' or 'n'\n"
end
end
end
end
end