detect jspm packages licenses

jspm.rb

#!/usr/bin/env ruby

require 'open-uri'
require 'json'


require 'shellwords'

ENV['NODE_PATH'] = '/usr/local/lib/node_modules'
# npm install -g licenses

data = DATA.read

define_method :autodetect do  |name|
  `node -e "#{data}" #{name}`.strip
end

packages = `jspm inspect`.scan(/\s+(?<repo>\w+):(?<name>\S+)\s(?<version>\d[\.\d\w\-\s]+\S)\n/).map{|(repo, name, versions)| [repo, name, versions.split(' ')] }

def each_version(packages, name, &block)
  packages.select{|(repo,_,_)| repo == name }.each{|(_,name,versions)| versions.each{|v| yield(name, v) } }
end

each_version(packages, 'github') do |name, version|
  puts "#{name.split(',').last}@#{version},TODO,https://github.com/#{name}"
end

each_version(packages, 'npm') do |name, version|
  url = "http://registry.npmjs.org/#{name}/#{version}"
  package = JSON.parse open("http://registry.npmjs.org/#{name}").read
  fallback = autodetect(name)
  license = package.fetch('license') { fallback.empty? ? 'UNKNOWN' : fallback }

  puts "#{name}@#{version},#{license},#{url}"
end

__END__
'use strict';

var licenses = require('licenses');

licenses(process.argv[1], function fetched(err, license) {
  if (license) {
    console.log(license.join(','));
    process.exit(0);
  } else {
    console.error(err);
    process.exit(1);
  }
});