Contents

module KnifeCookbookDependencies
  class DependencyReader
    attr_reader :dependency_list, :cookbook
    
    def initialize(cookbook)
      @cookbook = cookbook
      @dependency_list = []
    end

    def read
      Dir.chdir(@cookbook.full_path) do
        # XXX this filename is required because it sets __FILE__, which is
        # used for README.md parsing among other things in metadata.rb files
        instance_eval(@cookbook.metadata_file, @cookbook.metadata_filename)
      end
      @dependency_list
    end
    
    def depends(*args)
      name, constraint = args

      dependency_cookbook = KnifeCookbookDependencies.shelf.get_cookbook(name) || get_dependency(name)
      if dependency_cookbook
        dependency_cookbook.add_version_constraint constraint
      else
        @dependency_list << Cookbook.new(*args) 
      end
    end

    def get_dependency(name)
      @dependency_list.select { |c| c.name == name }.first
    end

    def method_missing(method, *args)
      # Don't blow up when other metadata DSL methods are called, we
      # only care about #depends.
    end

    def name(the_name)
      # Module#name is defined, so method_missing won't catch it
      # when running instance_eval on a metadata.rb that overrides
      # the name
    end

  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
knife_cookbook_dependencies-0.0.3	lib/knife_cookbook_dependencies/dependency_reader.rb
knife_cookbook_dependencies-0.0.2	lib/knife_cookbook_dependencies/dependency_reader.rb
knife_cookbook_dependencies-0.0.1	lib/knife_cookbook_dependencies/dependency_reader.rb