guerilla-di/tracksperanto

# Finds a suitable importer for the chosen file path. Or at least tries to, based on the file extension.
# Will then examine all the importers and ask them if they can handle the specified file
class Tracksperanto::FormatDetector
  
  def initialize(with_path)
    perform_detection(with_path)
    freeze
  end
  
  # Tells if an importer has been found for this file
  def match?
    !!@importer_klass
  end
  
  # Returns the importer if there is one
  def importer_klass
    @importer_klass
  end
  
  # Tells if comp size needs to be provided
  def auto_size?
    match? ? importer_klass.autodetects_size? : false
  end
  
  # Returns the human name of the importer
  def human_importer_name
    match? ? importer_klass.human_name : "Unknown format"
  end
  
  private

  def perform_detection(for_path)
    return unless (for_path && !for_path.to_s.empty?)
    ext = File.extname(for_path.downcase)
    @importer_klass = Tracksperanto.importers.find{ |i| i.distinct_file_ext == ext }
  end
  
end