Allow the base_iri of RDF.Vocabulary.Namespaces to end with a dot

CHANGELOG.md

@@ -51,7 +51,9 @@ are specified.
   almost never the expected behaviour. This is fixed now by relying on the new
   `put/2` behaviour.
 - for consistency reasons the internal `:id` struct field of `RDF.BlankNode` was renamed
-  to `:value` 
+  to `:value`
+- allow the `base_iri` of `RDF.Vocabulary.Namespace`s to end with a `.` to support
+  vocabularies which use dots in the IRIs for further structuring (eg. CIM-based formats like CGMES)   
 
 ### Fixed
 

lib/rdf/vocabulary_namespace.ex

@@ -200,7 +200,7 @@ defmodule RDF.Vocabulary.Namespace do
   defp base_iri!(opts) do
     base_iri = Keyword.fetch!(opts, :base_iri)
 
-    unless is_binary(base_iri) and String.ends_with?(base_iri, ["/", "#"]) do
+    unless is_binary(base_iri) and String.ends_with?(base_iri, ~w[/ # .]) do
       raise RDF.Namespace.InvalidVocabBaseIRIError,
             "a base_iri without a trailing '/' or '#' is invalid"
     else