Initial commit

lib/cdnjs-rails.rb

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+require 'cdnjs_rails'

lib/cdnjs_rails.rb

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+require 'multi_json'
+require 'cdnjs_rails/railtie' if defined? Rails
+
+module CdnjsRails
+  URL_TEMPLATE = '%s//cdnjs.cloudflare.com/ajax/libs/%s/%s/%s'
+
+  def package_url name, options = {}
+    package = packages[name]
+    raise UnknownPackageError.new(name) if package.nil?
+
+    version = options[:version] || options[:ver] || options[:v]
+    version = package['latest_version'] if version.nil? || version == 'latest'
+    unless package['versions'].include?(version)
+      raise UnknownPackageVersionError.new(name, version)
+    end
+
+    protocol = options[:protocol] || options[:proto]
+    protocol = "#{protocol}:" unless protocol.nil?
+
+    URL_TEMPLATE % [protocol.to_s, name, version, package['filename']]
+  end
+
+  private
+
+  def packages
+    @packages ||= MultiJson.load(packages_json)
+  end
+
+  def packages_json
+    path = File.expand_path('../../data/packages.json', __FILE__)
+    File.open(path).read
+  end
+
+  extend self
+
+  class UnknownPackageError < ::Exception
+    def initialize name
+      super "Unknown package: #{name}"
+    end
+  end
+
+  class UnknownPackageVersionError < ::Exception
+    def initialize name, version
+      super "Unknown #{name} version: #{version}"
+    end
+  end
+end

lib/cdnjs_rails/railtie.rb

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+require 'cdnjs_rails/view_helpers'
+
+module CdnjsRails
+  class Railtie < Rails::Railtie
+    initializer 'cdnjs_rails.view_helpers' do |app|
+      ActionView::Base.send(:include, ViewHelpers)
+    end
+  end
+end

lib/cdnjs_rails/version.rb

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+module CdnjsRails
+  VERSION = '0.0.1'
+end

lib/cdnjs_rails/view_helpers.rb

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+module CdnjsRails
+  module ViewHelpers
+    def javascript_cdnjs_tag name, version = nil
+      javascript_include_tag CdnjsRails.package_url(name, version)
+    end
+
+    def stylesheet_cdnjs_tag name, version = nil
+      stylesheet_include_tag CdnjsRails.package_url(name, version)
+    end
+  end
+end