initial commit

.gitignore

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+/.bundle/
+/.yardoc
+/Gemfile.lock
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/

.travis.yml

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+language: ruby
+rvm:
+  - 2.2.2
+before_install: gem install bundler -v 1.11.2

Gemfile

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+source 'https://rubygems.org'
+
+gemspec

LICENSE.txt

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+The MIT License (MIT)
+
+Copyright (c) 2016 Kevin Deisz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# AwsCF
+
+Welcome to your new gem! In this directory, you'll find the files you need to be able to package up your Ruby library into a gem. Put your Ruby code in the file `lib/aws_cf`. To experiment with that code, run `bin/console` for an interactive prompt.
+
+TODO: Delete this and the text above, and describe your gem
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+```ruby
+gem 'aws_cf'
+```
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install aws_cf
+
+## Usage
+
+TODO: Write usage instructions here
+
+## Development
+
+After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake test` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/aws_cf.
+
+
+## License
+
+The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).
+

Rakefile

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+require 'bundler/gem_tasks'
+require 'rake/testtask'
+
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'test'
+  t.libs << 'lib'
+  t.test_files = FileList['test/**/*_test.rb']
+end
+
+task default: :test

aws_cf.gemspec

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+# coding: utf-8
+lib = File.expand_path('../lib', __FILE__)
+$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
+require 'aws_cf/version'
+
+Gem::Specification.new do |spec|
+  spec.name          = 'aws_cf'
+  spec.version       = AwsCF::VERSION
+  spec.authors       = ['Kevin Deisz']
+  spec.email         = ['kevin.deisz@gmail.com']
+
+  spec.summary       = %q{TODO: Write a short summary, because Rubygems requires one.}
+  spec.description   = %q{TODO: Write a longer description or delete this line.}
+  spec.homepage      = "TODO: Put your gem's website or public repo URL here."
+  spec.license       = "MIT"
+
+  # Prevent pushing this gem to RubyGems.org by setting 'allowed_push_host', or
+  # delete this section to allow pushing this gem to any host.
+  if spec.respond_to?(:metadata)
+    spec.metadata['allowed_push_host'] = "TODO: Set to 'http://mygemserver.com'"
+  else
+    raise "RubyGems 2.0 or newer is required to protect against public gem pushes."
+  end
+
+  spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+
+  spec.add_development_dependency 'bundler', '~> 1.11'
+  spec.add_development_dependency 'rake', '~> 10.0'
+  spec.add_development_dependency 'minitest', '~> 5.0'
+  spec.add_development_dependency 'nokogiri'
+  spec.add_development_dependency 'pry'
+end

bin/console

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+#!/usr/bin/env ruby
+
+require 'bundler/setup'
+require 'aws_cf'
+
+require 'irb'
+IRB.start

bin/get-docs

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+#!/usr/bin/env ruby
+
+require 'bundler/setup'
+require 'aws_cf'
+
+require 'fileutils'
+require 'net/http'
+require 'nokogiri'
+require 'uri'
+
+def get_url(page)
+  base_url = 'http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/'
+  listing = Net::HTTP.get_response(URI.parse(base_url + page)).body
+end
+
+Nokogiri::HTML(get_url('aws-template-resource-type-ref.html')).css('.highlights ul li a').each do |link|
+  contents = Nokogiri::HTML(get_url(link['href'])).at_css('.programlisting').text.strip.split("\n")
+  next unless (type_line = contents.grep(/Type/).first) && contents.grep(/Properties/).first
+
+  File.open(File.join('specs', type_line.scan(/AWS::(.*?)::(.*?)\"/).first.join('-') + '.cf'), 'w') do |file|
+    file.write(contents.join("\n"))
+  end
+end

lib/aws_cf.rb

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+require 'json'
+require 'pathname'
+
+require 'aws_cf/parser'
+require 'aws_cf/props'
+require 'aws_cf/resource'
+require 'aws_cf/version'
+
+Dir[File.expand_path(File.join('..', '..', 'specs', '*'), __FILE__)].each do |filepath|
+  group, resource = Pathname.new(filepath).basename('.cf').to_s.split('-')
+  spec = File.readlines(filepath).slice_after { |line| line.include?('Properties') }.to_a[1].slice_before { |line| line.strip == '}' }.to_a[0]
+  AwsCF::Resource.register(group, resource, spec.join)
+end

lib/aws_cf/parser.rb

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+module AwsCF
+  class Parser
+
+    attr_accessor :props, :spec
+
+    def initialize(spec)
+      self.spec = spec
+    end
+
+    def parse
+      self.props = spec.split("\n").map do |spec_line|
+        prop = Props.from(spec_line)
+        [prop.name, prop]
+      end.to_h
+    end
+
+    def self.parse(spec)
+      parser = new(spec)
+      parser.parse
+      parser
+    end
+  end
+end

lib/aws_cf/props.rb

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+module AwsCF
+  module Props
+    def self.from(spec_line)
+      if spec_line.include?(':')
+        key, type = spec_line.strip.gsub(/,\z/, '').split(' : ')
+        key = key[1..-2]
+      else
+        key, type = nil, spec_line.strip
+      end
+
+      case type
+      when 'Boolean' then BooleanProp.new(key: key)
+      when 'Integer' then IntegerProp.new(key: key)
+      when 'String' then StringProp.new(key: key)
+      when /\[ (.*?),.*?\]/ then ArrayProp.new(key: key, spec: $1)
+      else
+        StringProp.new(key: key)
+        #TODO fail ArgumentError, "Invalid spec: #{spec_line}"
+      end
+    end
+  end
+end
+
+require 'aws_cf/props/base'
+require 'aws_cf/props/array_prop'
+require 'aws_cf/props/boolean_prop'
+require 'aws_cf/props/integer_prop'
+require 'aws_cf/props/string_prop'

lib/aws_cf/props/array_prop.rb

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+module AwsCF
+  module Props
+    class ArrayProp < Base
+
+      attr_accessor :sub_prop
+
+      def valid?(value)
+        value.is_a?(Array) && value.all? { |sub_value| sub_prop.valid?(sub_value) }
+      end
+
+      private
+
+        def after_initialize(args)
+          self.sub_prop = Props.from(args[:spec])
+        end
+    end
+  end
+end

lib/aws_cf/props/base.rb

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+module AwsCF
+  module Props
+    class Base
+
+      attr_accessor :key
+      attr_reader :value
+
+      def initialize(args = {})
+        self.key = args[:key]
+        after_initialize(args)
+      end
+
+      def name
+        @name ||= key && key.gsub(/(.)([A-Z])/, '\1_\2').downcase
+      end
+
+      def to_cf(value)
+        [key, value]
+      end
+
+      private
+
+        def after_initialize(args)
+        end
+    end
+  end
+end

lib/aws_cf/props/boolean_prop.rb

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+module AwsCF
+  module Props
+    class BooleanProp < Base
+      def valid?(value)
+        value.is_a?(TrueClass) || value.is_a?(FalseClass)
+      end
+    end
+  end
+end

lib/aws_cf/props/integer_prop.rb

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+module AwsCF
+  module Props
+    class IntegerProp < Base
+      def valid?(value)
+        value.is_a?(Fixnum)
+      end
+    end
+  end
+end

lib/aws_cf/props/string_prop.rb

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+module AwsCF
+  module Props
+    class StringProp < Base
+      def valid?(value)
+        value.is_a?(String)
+      end
+    end
+  end
+end

lib/aws_cf/resource.rb

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+module AwsCF
+  class Resource
+
+    attr_accessor :properties
+
+    def initialize
+      self.properties = {}
+    end
+
+    def method_missing(name, *args)
+      sname = name.to_s
+
+      if (self.class.props.keys & [sname, sname[0..-2]]).empty?
+        super
+      elsif self.class.props.key?(sname)
+        properties[sname]
+      elsif !self.class.props[sname[0..-2]].valid?(args.first)
+        fail ArgumentError, "Invalid value for #{sname[0..-2]}: #{args.first.inspect}"
+      else
+        properties[sname[0..-2]] = args.first
+      end
+    end
+
+    def respond_to_missing?(name, include_private = false)
+      sname = name.to_s
+      (self.class.props.keys & [sname, sname[0..-2]]).any? || super
+    end
+
+    def to_cf
+      props_cf = properties.map do |key, value|
+        self.class.props[key].to_cf(value)
+      end.to_h
+
+      JSON.pretty_generate({ 'Type' => self.class.aws_name, 'Properties' => props_cf })
+    end
+
+    class << self
+      attr_accessor :aws_name, :props
+
+      def register(group, resource, spec)
+        parser = Parser.parse(spec)
+        self.props = parser.props
+
+        resource_class = Class.new(Resource)
+        resource_class.props = parser.props
+        resource_class.aws_name = "AWS::#{group}::#{resource}"
+
+        AwsCF.const_set(group, Module.new) unless AwsCF.const_defined?(group)
+        AwsCF.const_get(group).const_set(resource, resource_class)
+      end
+    end
+  end
+end

lib/aws_cf/version.rb

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+module AwsCF
+  VERSION = '0.0.1'
+end

specs/AutoScaling-AutoScalingGroup.cf

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+{
+   "Type" : "AWS::AutoScaling::AutoScalingGroup",
+   "Properties" : {
+      "AvailabilityZones" : [ String, ... ],
+      "Cooldown" : String,
+      "DesiredCapacity" : String,
+      "HealthCheckGracePeriod" : Integer,
+      "HealthCheckType" : String,
+      "InstanceId" : String,
+      "LaunchConfigurationName" : String,
+      "LoadBalancerNames" : [ String, ... ],
+      "MaxSize" : String,
+      "MetricsCollection" : [ MetricsCollection, ... ]
+      "MinSize" : String,
+      "NotificationConfigurations" : [ NotificationConfigurations, ... ],
+      "PlacementGroup" : String,
+      "Tags" : [ Auto Scaling Tag, ..., ],
+      "TerminationPolicies" : [ String, ..., ],
+      "VPCZoneIdentifier" : [ String, ... ]
+   }
+}