class EacRubyGemSupport::SourceTargetFixtures

def fixture_file(basename, suffix)
  prefix = "#{basename}.#{suffix}"
  Dir.foreach(fixtures_directory) do |item|
    next if %w[. ..].include?(item)
    return File.expand_path(item, fixtures_directory) if item.starts_with?(prefix)
  end
  nil
end

def source_file(basename)
  fixture_file(basename, 'source')
end

def source_files
  r = []
  source_target_files.each do |st|
    r << st.source if st.source
  end
  r
end

def source_target_basename(file)
  m = /^(.+)\.(?:source|target)(?:\..+)?$/.match(File.basename(file))
  m ? m[1] : nil
end

def source_target_files
  sources_targets_basenames.map do |basename|
    ::EacRubyGemSupport::SourceTargetFixtures::SourceTargetFile.new(self, basename)
  end
end

def sources_targets_basenames
  basenames = Set.new
  Dir.foreach(fixtures_directory) do |item|
    next if %w[. ..].include?(item)
    b = self.class.source_target_basename(item)
    basenames << b if b.present?
  end
  basenames
end

def target_file(basename)
  fixture_file(basename, 'target')
end

def target_files
  r = []
  source_target_files.each do |st|
    r << st.target if st.target
  end
  r
end