# TITLE:
#
#   ConsoleUtils
#
# COPYING:
#
#   Copyright (c) 2007 Psi T Corp.
#
#   This file is part of the ProUtils' Ratch program.
#
#   Ratch is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   Ratch 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 Ratch.  If not, see <http://www.gnu.org/licenses/>.

module Ratch

  module ConsoleUtils

    # Convenient method to get simple console reply.

    def ask(question, answers=nil)
      print "#{question}"
      print " [#{answers}] " if answers
      until inp = $stdin.gets ; sleep 1 ; end
      inp
    end

    # Ask for a password. (FIXME: only for unix so far)

    def password(prompt=nil)
      msg ||= "Enter Password: "
      inp = ''

      print "#{prompt} "

      begin
        system "stty -echo"
        #inp = gets.chomp
        until inp = $stdin.gets
          sleep 1
        end
      ensure
        system "stty echo"
      end

      return inp.chomp
    end

  end

end


class Array

  # Not empty?

  def not_empty?
    !empty?
  end

  # Convert an array into command line parameters.
  # The array is accepted in the format of Ruby
  # method arguments --ie. [arg1, arg2, ..., hash]

  def to_console
    flags = (Hash===last ? pop : {})
    flags = flags.to_console
    flags + ' ' + join(" ")
  end
  alias_method :to_params, :to_console

#   def to_console
#     flags = (Hash===last ? pop : {})
#     flags = flags.collect do |f,v|
#       m = f.to_s.size == 1 ? '-' : '--'
#       case v
#       when Array
#         v.collect{ |e| "#{m}#{f} '#{e}'" }.join(' ')
#       when true
#         "#{m}#{f}"
#       when false, nil
#         ''
#       else
#         "#{m}#{f} '#{v}'"
#       end
#     end
#     return (flags + self).join(" ")
#   end

end


class Hash

  # Convert an array into command line parameters.
  # The array is accepted in the format of Ruby
  # method arguments --ie. [arg1, arg2, ..., hash]

  def to_console
    flags = collect do |f,v|
      m = f.to_s.size == 1 ? '-' : '--'
      case v
      when Array
        v.collect{ |e| "#{m}#{f}='#{e}'" }.join(' ')
      when true
        "#{m}#{f}"
      when false, nil
        ''
      else
        "#{m}#{f}='#{v}'"
      end
    end
    flags.join(" ")
  end

  # Turn a hash into arguments.
  #
  #   h = { :list => [1,2], :base => "HI" }
  #   h.argumentize #=> [ [], { :list => [1,2], :base => "HI" } ]
  #   h.argumentize(:list) #=> [ [1,2], { :base => "HI" } ]
  #
  def argumentize(args_field=nil)
    config = dup
    if args_field
      args = [config.delete(args_field)].flatten.compact
    else
      args = []
    end
    args << config
    return args
  end

  alias_method :command_vector, :argumentize

end