Without linkeddata loading, attempt to manually load all other serialization gems.

Require 'cli' when used, rather than depend on autoload.

Author: gkellogg

lib/rdf/cli.rb

@@ -8,7 +8,7 @@
   require 'linkeddata'
 rescue LoadError
   # Silently load without linkeddata, but try some others
-  %w(reasoner rdfa rdfxml turtle vocab json/ld ld/patch).each do |ser|
+  %w(microdata n3 rdfa rdfxml reasoner tabular trig trix turtle vocab xsd json/ld ld/patch).each do |ser|
     begin
       require ser.include?('/') ? ser : "rdf/#{ser}"
     rescue LoadError

lib/rdf/reader.rb

@@ -1,4 +1,6 @@
 # frozen_string_literal: true
+require 'cli'
+
 module RDF
   ##
   # The base class for RDF parsers.

lib/rdf/vocab/writer.rb

@@ -1,6 +1,7 @@
 require 'rdf'
 require 'rdf/vocabulary'
 require 'cgi'
+require 'cli'
 
 module RDF
   ##

lib/rdf/writer.rb

@@ -1,4 +1,6 @@
 # -*- encoding: utf-8 -*-
+require 'cli'
+
 module RDF
   ##
   # The base class for RDF serializers.