class Picker
Public Class Methods
new(ary)
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# File lib/subcl/picker.rb, line 2 def initialize(ary) @available = ary if ary.empty? then raise ArgumentError, "Cannot initialize Picker with an empty array!" end end
Public Instance Methods
pick() { |elem| ... }
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# File lib/subcl/picker.rb, line 9 def pick choices = {} #TODO add type column when multiple types are available counter_padding = @available.length.to_s.length i = 1 @available.each do |elem| choices[i] = elem #TODO add padding for numbers with one digit $stderr.print "[#{i.to_s.rjust(counter_padding)}] " yield(elem) i = i + 1 end begin picks = [] valid = true $stderr.print "Pick any: " choice = $stdin.gets return @available if choice.chomp == 'all' choice.split(/[ ,]+/).each do |part| possibleRange = part.split(/\.\.|-/) if possibleRange.length == 2 start = possibleRange[0].to_i stop = possibleRange[1].to_i [start, stop].each do |num| valid = validate(num) end (start..stop).each do |num| picks << choices[num] end elsif validate(num = part.to_i) picks << choices[num] else valid == false end end end while !valid return picks end
validate(pickNum)
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# File lib/subcl/picker.rb, line 57 def validate(pickNum) #no -1, we start filling choices{} at 1 if pickNum > 0 and pickNum <= @available.length true else $stderr.puts "Invalid pick. Try again." false end end