a substitution of Chrome Extension `create link`.

create_link.rb

#!/usr/bin/env ruby

# require `gem install nokogiri` 

require 'nokogiri'

require 'open-uri'
require 'optparse'

opt = OptionParser.new

type = :markdown
opt.on('-t','--type=TYPE'){|t|
  type = t.to_sym}

opt.parse!

abort "url is required." if ARGV.size != 1

begin
  url = ARGV.first
  title = Nokogiri::HTML(open(url)).css('title').text
  fmts = {
    markdown: "[#{title}][#{url}]",
    org: "[[#{url}][#{title}]]",
    plain: "#{title} #{url}",
    html: "<a href='#{url}'>#{title}</a>"
  }
  abort "unknown format." unless fmts.has_key? type
  puts fmts[type]
  `echo #{fmts[type]} | pbcopy` if  RbConfig::CONFIG["target_os"].downcase['darwin']
end