class Jeweler::GemSpecHelper

def gem_path
  File.join(@base_dir, 'pkg', parse.file_name)
end

def initialize(spec, base_dir = nil)
  self.spec = spec
  self.base_dir = base_dir || ''
  yield spec if block_given?
end

def parse
  data = File.read(path)
  parsed_gemspec = nil
  Thread.new { parsed_gemspec = eval("$SAFE = 3\n#{data}", binding, path) }.join 
  parsed_gemspec
end

def path
  denormalized_path = File.join(@base_dir, "#{@spec.name}.gemspec")
  absolute_path = File.expand_path(denormalized_path)
  absolute_path.gsub(Dir.getwd + File::SEPARATOR, '') 
end

def update_version(version)
  @spec.version = version.to_s
end

def valid?
  begin
    parse
    true
  rescue
    false
  end
end

def write
  File.open(path, 'w') do |f|
    f.write @spec.to_ruby
  end 
end