Class: Nero::RootPathTag

Inherits:
BaseTag show all
Defined in:
lib/nero/root_path_tag.rb

Instance Method Summary collapse

Constructor Details

#initialize(containing:) ⇒ RootPathTag

Returns a new instance of RootPathTag.



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# File 'lib/nero/root_path_tag.rb', line 5

def initialize(containing:)
  @containing = containing
end

Instance Method Details

#resolve(args, context:) ⇒ Object 



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# File 'lib/nero/root_path_tag.rb', line 9

def resolve(args, context:)
  relative_path = args[0]&.then { |p| p.empty? ? nil : p }
  dir = context.dir

  loop do
    if File.exist?(File.join(dir, @containing))
      return relative_path ? Pathname.new(File.join(dir, relative_path)) : Pathname.new(dir)
    end
    parent = File.dirname(dir)
    if parent == dir
      context.add_error("could not find #{@containing} in any ancestor of #{context.dir}")
      return nil
    end
    dir = parent
  end
end