lib/rbnacl/sodium/version.rb in rbnacl-3.4.0 vs lib/rbnacl/sodium/version.rb in rbnacl-4.0.0.pre

@@ -1,24 +1,34 @@
+# encoding: binary
+# frozen_string_literal: true
+
 require "rbnacl/sodium"
 
 module RbNaCl
   module Sodium
     # libsodium version API
     module Version
-      MINIMUM_LIBSODIUM_VERSION = "0.4.3".freeze
+      MINIMUM_LIBSODIUM_VERSION = [0, 4, 3].freeze
+      MINIMUM_LIBSODIUM_VERSION_FOR_ARGON2 = [1, 0, 9].freeze
 
       extend Sodium
       attach_function :sodium_version_string, [], :string
 
       STRING = sodium_version_string
       MAJOR, MINOR, PATCH = STRING.split(".").map(&:to_i)
 
-      installed_version = [MAJOR, MINOR, PATCH]
-      minimum_version   = MINIMUM_LIBSODIUM_VERSION.split(".").map(&:to_i)
+      INSTALLED_VERSION = [MAJOR, MINOR, PATCH].freeze
 
-      case installed_version <=> minimum_version
+      case INSTALLED_VERSION <=> MINIMUM_LIBSODIUM_VERSION
       when -1
         raise "Sorry, you need to install libsodium #{MINIMUM_LIBSODIUM_VERSION}+. You have #{Version::STRING} installed"
+      end
+
+      ARGON2_SUPPORTED = (INSTALLED_VERSION <=> MINIMUM_LIBSODIUM_VERSION_FOR_ARGON2) == -1 ? false : true
+
+      # Determine if a given feature is supported based on Sodium version
+      def self.supported_version?(version)
+        Gem::Version.new(sodium_version_string) >= Gem::Version.new(version)
       end
     end
   end
 end