Don't use the rdf namespace as default for REXML and check for an empty namespace.

Author: gkellogg

lib/rdf/rdfxml/reader/rexml.rb

@@ -117,7 +117,7 @@ def display_path
 
         # URI of namespace + name
         def uri
-          ns = namespace || RDF::XML.to_s
+          ns = namespace
           ns = ns.href if ns.respond_to?(:href)
           RDF::URI.intern(ns + @node.name)
         end
@@ -144,10 +144,10 @@ def namespaces
         end
 
         def namespace
-          if @node.namespace
+          if @node.namespace && !@node.namespace.empty?
             Namespace.new(@node.namespace, @node.prefix)
           else
-            Namespace.new(RDF::XML.to_s, 'rdf')
+            Namespace.new(RDF::XML.to_s, 'xml')
           end
         end
 

script/parse

@@ -53,8 +53,9 @@ logger.formatter = lambda {|severity, datetime, progname, msg| "#{severity}: #{m
 
 parser_options = {
   base_uri:  nil,
-  validate:  false,
+  library: :nokogiri,
   logger: logger,
+  validate:  false,
 }
 
 writer_options = {
@@ -85,6 +86,7 @@ OPT_ARGS = [
   ["--help", "-?", GetoptLong::NO_ARGUMENT, "print this message"],
   ["--input-format", GetoptLong::REQUIRED_ARGUMENT, "Format of the input file, defaults to ttl"],
   ["--info", GetoptLong::NO_ARGUMENT, "Show progress on execution"],
+  ["--library", GetoptLong::REQUIRED_ARGUMENT, "XML library to use (nokogiri or rexml)"],
   ["--output", "-o", GetoptLong::REQUIRED_ARGUMENT, "Save output to file"],
   ["--quiet", GetoptLong::NO_ARGUMENT, "Do not show parser output"],
   ["--stream", GetoptLong::NO_ARGUMENT, "Use streaming writer"],
@@ -124,6 +126,7 @@ opts.each do |opt, arg|
   when '--format'       then options[:output_format] = arg.to_sym
   when "--help"         then usage()
   when '--input-format' then options[:input_format] = arg.to_sym
+  when '--library'      then parser_options[:library] = arg.to_sym
   when '--output'       then options[:output] = File.open(arg, "w")
   when '--rdfstar'      then parser_options[:rdfstar] = true
   when '--quiet'