Contents

# frozen_string_literal: true

module Spandx
  module Core
    class Guess
      attr_reader :catalogue

      def initialize(catalogue)
        @catalogue = catalogue
      end

      def license_for(raw_content, algorithm: :dice_coefficient)
        content = Content.new(raw_content)
        score = Score.new(nil, nil)
        threshold = threshold_for(algorithm)
        direction = algorithm == :levenshtein ? method(:min) : method(:max)

        catalogue.each do |license|
          direction.call(content, license, score, threshold, algorithm) unless license.deprecated_license_id?
        end
        score&.item&.id
      end

      private

      def threshold_for(algorithm)
        {
          dice_coefficient: 89.0,
          jaro_winkler: 80.0,
          levenshtein: 80.0,
        }[algorithm.to_sym]
      end

      def min(target, other, score, threshold, algorithm)
        percentage = target.similarity_score(other.content, algorithm: algorithm)
        return if percentage > threshold
        return if score.score > 0.0 && score.score < percentage

        score.update(percentage, other)
      end

      def max(target, other, score, threshold, algorithm)
        percentage = target.similarity_score(other.content, algorithm: algorithm)
        return if percentage < threshold
        return if score.score >= percentage

        score.update(percentage, other)
      end
    end
  end
end

Version data entries

7 entries across 7 versions & 1 rubygems

Version	Path
spandx-0.11.0	lib/spandx/core/guess.rb
spandx-0.10.1	lib/spandx/core/guess.rb
spandx-0.10.0	lib/spandx/core/guess.rb
spandx-0.9.0	lib/spandx/core/guess.rb
spandx-0.8.0	lib/spandx/core/guess.rb
spandx-0.7.0	lib/spandx/core/guess.rb
spandx-0.6.0	lib/spandx/core/guess.rb