lib/uri/ni.rb in uri-ni-0.1.2 vs lib/uri/ni.rb in uri-ni-0.1.4

@@ -184,11 +184,11 @@
   # @param  [#to_s, #to_sym]  The algorithm
   # @return [Digest:Instance] The digest context
   # @raise  [ArgumentError] if the algorithm is unrecognized
   def self.context algorithm
     raise ArgumentError, "Cannot coerce #{algorithm} to a symbol" unless
-      algorithm.respond_to(:to_s) # cheat: symbols respond to to_s
+      algorithm.respond_to? :to_s # cheat: symbols respond to to_s
     algorithm = algorithm.to_s.to_sym unless algorithm.is_a? Symbol
     raise ArgumentError, "Unsupported digest algorithm #{algorithm}" unless
       ctx = DIGESTS[algorithm]
     ctx.new
   end
@@ -473,6 +473,18 @@
   #
   def to_http authority: nil
     to_www https: false, authority: authority
   end
 
+  # Returns the set of supported algorithms.
+  # @return [Array] the algorithms
+  def self.algorithms
+    DIGESTS.keys
+  end
+
+  # Returns true if the algorithm is supported.
+  # @param algorithm [Symbol,String] the algorithm identifier to test
+  # @return [true, false] whether it is supported
+  def self.valid_algo? algorithm
+    DIGESTS.has_key? algorithm.to_s.downcase.to_sym
+  end
 end