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require 'readline'
module LeapCli; module Commands
extend LeapCli::LogCommand
extend LeapCli::Util
def path(name)
Path.named_path(name)
end
#
# keeps prompting the user for a numbered choice, until they pick a good one or bail out.
#
# block is yielded and is responsible for rendering the choices.
#
def numbered_choice_menu(msg, items, &block)
while true
say("\n" + msg + ':')
items.each_with_index(&block)
say("q. quit")
index = ask("number 1-#{items.length}> ")
if index.empty?
next
elsif index =~ /q/
bail!
else
i = index.to_i - 1
if i < 0 || i >= items.length
bail!
else
return i
end
end
end
end
def parse_node_list(nodes)
if nodes.is_a? Config::Object
Config::ObjectList.new(nodes)
elsif nodes.is_a? Config::ObjectList
nodes
elsif nodes.is_a? String
manager.filter!(nodes)
else
bail! "argument error"
end
end
def say(statement)
if ends_in_whitespace?(statement)
$stdout.print(statement)
$stdout.flush
else
$stdout.puts(statement)
end
end
def ask(question, options={})
default = options[:default]
if default
if ends_in_whitespace?(question)
question = question + "|" + default + "| "
else
question = question + "|" + default + "|"
end
end
response = Readline.readline(question, true) # set to false if ever reading passwords.
if response
response = response.strip
if response.empty?
return default
else
return response
end
else
return default
end
end
def agree(question, options={})
while true
response = ask(question, options)
if response.nil?
say('Please enter "yes" or "no".')
elsif ["y","yes", "ye"].include?(response.downcase)
return true
elsif ["n", "no"].include?(response.downcase)
return false
else
say('Please enter "yes" or "no".')
end
end
end
private
# true if str ends in whitespace before a color escape code.
def ends_in_whitespace?(str)
/[ \t](\e\[\d+(;\d+)*m)?\Z/ =~ str
end
end; end
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