Chef Metadata Chopper!

00_README.md

MetadataChopper

MetadataChopper.extract('metdata.rb') # => [ "rvm", "0.9.1" ]

01_metadata_chopper.rb

class MetadataChopper

  def self.extract(metadata_file)
    mc = new(metadata_file)
    [ mc.get_name, mc.get_version ]
  end

  def initialize(metadata_file)
    eval(IO.read(File.expand_path(metadata_file)))
  end

  def name(arg=nil) ; @name = arg ; end
  def get_name ; @name ; end

  def version(arg=nil) ; @version = arg ; end
  def get_version ; @version ; end

  def method_missing(meth, *args, &block)
    DSL_METHODS.include?(meth.to_s) ? nil : super
  end

  DSL_METHODS = %w(description long_description maintainer maintainer_email
    license supports depends recommends suggests conflicts provides replaces
    attribute grouping recipe)
end

02_meta_chopper_kantrn.rb

class X<Hash;def self.e(f)x=new(f);[x[:name],x[:version]]end;def initialize(f);eval(IO.read(f),nil,f)end;def method_missing(k,*v)self[k]=v[0] end end

03_meta_chopper_hash.rb

class MetadataChopper < Hash

  def self.extract(metadata_file)
    mc = new(File.expand_path(metadata_file))
    [ mc[:name], mc[:version] ]
  end

  def initialize(metadata_file)
    eval(IO.read(metadata_file), nil, metadata_file)
  end

  def method_missing(meth, *args, &block)
    self[meth] = args.first
  end
end