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class QuestionAsker
attr_reader :question
include CustomErrors
def initialize(question, highline)
@question = question
@highline = highline
end
#
# Gets one answer, as opposed to #gather
#
def ask_once
# readline() needs to handle its own output, but readline only supports
# full line reading. Therefore if question.echo is anything but true,
# the prompt will not be issued. And we have to account for that now.
# Also, JRuby-1.7's ConsoleReader.readLine() needs to be passed the prompt
# to handle line editing properly.
@highline.say(question) unless ((question.readline) and (question.echo == true and !question.limit))
begin
question.get_response_or_default(@highline)
raise NotValidQuestionError unless question.valid_answer?
question.convert
if question.confirm
# need to add a layer of scope (new_scope) to ask a question inside a
# question, without destroying instance data
raise NoConfirmationQuestionError unless @highline.send(:confirm, question)
end
rescue NoConfirmationQuestionError
explain_error(nil)
retry
rescue NotInRangeQuestionError
explain_error(:not_in_range)
retry
rescue NotValidQuestionError
explain_error(:not_valid)
retry
rescue QuestionError
retry
rescue ArgumentError => error
case error.message
when /ambiguous/
# the assumption here is that OptionParser::Completion#complete
# (used for ambiguity resolution) throws exceptions containing
# the word 'ambiguous' whenever resolution fails
explain_error(:ambiguous_completion)
retry
when /invalid value for/
explain_error(:invalid_type)
retry
else
raise
end
rescue NoAutoCompleteMatch
explain_error(:no_completion)
retry
end
question.answer
end
## Multiple questions
#
# Collects an Array/Hash full of answers as described in
# HighLine::Question.gather().
#
def gather_answers
original_question_template = question.template
verify_match = question.verify_match
begin # when verify_match is set this loop will repeat until unique_answers == 1
question.template = original_question_template
answers =
case question.gather
when Integer
gather_integer
when ::String, Regexp
gather_regexp
when Hash
gather_hash
end
if verify_match && (@highline.send(:unique_answers, answers).size > 1)
explain_error(:mismatch)
else
verify_match = false
end
end while verify_match
question.verify_match ? @highline.send(:last_answer, answers) : answers
end
public :gather_answers
def gather_integer
answers = []
answers << ask_once
question.template = ""
(question.gather-1).times do
answers << ask_once
end
answers
end
def gather_regexp
answers = []
answers << ask_once
question.template = ""
until (question.gather.is_a?(::String) and answers.last.to_s == question.gather) or
(question.gather.is_a?(Regexp) and answers.last.to_s =~ question.gather)
answers << ask_once
end
answers.pop
answers
end
def gather_hash
answers = {}
question.gather.keys.sort.each do |key|
@highline.key = key
answers[key] = ask_once
end
answers
end
## Delegate to Highline
private
def explain_error(error)
@highline.say(question.responses[error]) if error
@highline.say(question.ask_on_error_msg)
end
end
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