#!/usr/bin/env ruby

def usage msg=nil
  puts "ERROR: #{msg}" if msg
  puts "USAGE:\n  destroy filename"
  exit 1
end

require 'loremarkov'

# accept text from STDIN or filename
#
if $stdin.tty?
  # from file or sample
  filename = ARGV.shift || 'lorem_ipsum'
  unless File.exists?(filename)
    filename = File.join(__dir__, '..', 'text', filename)
  end
  raise("unknown file: #{filename}:") unless File.exists?(filename)
  text = File.read(filename)
else
  # from STDIN
  text = $stdin.read
end


# destruction parameter engage (default 5)
#
num_prefixes = ARGV.shift
num_prefixes = num_prefixes ? num_prefixes.to_i : 5

# DESTROY!!!!!
#
puts Loremarkov.new(num_prefixes).destroy text