gistfile1.rb

require "uri"

urls = [
  "http://caius.name/",
  "http:/caius.name/",
  "http://ca]ius.name/",
  "http://cai;us.name/",
  "http://caius",
  "http://",
  "caius.name",
]

headers = %w(url pass-regex? pass-parse?)
i = (headers | urls).map {|x| x.length }.max
headers.each do |h|
  printf " %-#{i}s", h
end
puts

urls.each do |u|
  printf " %-#{i+5}s", u

  if u =~ URI.regexp
    printf " %-#{i}s", "✓"
  else
    printf " %-#{i}s", "𐄂"
  end

  begin
    URI(u)
    printf " %-#{i}s", "✓"
  rescue URI::InvalidURIError => e
    printf " %-#{i}s", "𐄂"
  end


  puts
end
# >>  url                 pass-regex?         pass-parse?        
# >>  http://caius.name/       ✓                   ✓                  
# >>  http:/caius.name/        ✓                   ✓                  
# >>  http://ca]ius.name/      ✓                   𐄂                  
# >>  http://cai;us.name/      ✓                   𐄂                  
# >>  http://caius             ✓                   ✓                  
# >>  http://                  ✓                   𐄂                  
# >>  caius.name               𐄂                   ✓