rubygems/rubygems

# frozen_string_literal: true

module Bundler
  class CompactIndexClient
    if defined?(Gem::Resolver::APISet::GemParser)
      GemParser = Gem::Resolver::APISet::GemParser
    else
      class GemParser
        EMPTY_ARRAY = [].freeze
        private_constant :EMPTY_ARRAY

        def parse(line)
          version_and_platform, rest = line.split(" ", 2)
          version, platform = version_and_platform.split("-", 2)
          dependencies, requirements = rest.split("|", 2).map! {|s| s.split(",") } if rest
          dependencies = dependencies ? dependencies.map! {|d| parse_dependency(d) } : EMPTY_ARRAY
          requirements = requirements ? requirements.map! {|d| parse_dependency(d) } : EMPTY_ARRAY
          [version, platform, dependencies, requirements]
        end

        private

        def parse_dependency(string)
          dependency = string.split(":")
          dependency[-1] = dependency[-1].split("&") if dependency.size > 1
          dependency[0] = -dependency[0]
          dependency
        end
      end
    end
  end
end