feat: support rubinius

.travis.yml

@@ -11,6 +11,7 @@ rvm:
   - 2.0.0
   - 1.9.3
   - jruby-19mode
+  - rbx-3.86
 matrix:
   include:
     # https://github.com/travis-ci/travis-ci/issues/7848

Rakefile

@@ -52,15 +52,15 @@ task compare: :compile do
   table.each{|row| puts row.join(' | ')}
 end
 
-if RUBY_PLATFORM == 'java'
-  task :compile do
-    puts 'Can not compile C extension, fallback to pure Ruby version.'
-  end
-else
+if RUBY_ENGINE == 'ruby'
   Rake::ExtensionTask.new 'jaro_winkler_ext' do |ext|
     ext.lib_dir = 'lib/jaro_winkler'
     ext.ext_dir = 'ext/jaro_winkler'
   end
+else
+  task :compile do
+    puts 'Can not compile C extension, fallback to pure Ruby version.'
+  end
 end
 
 Rake::TestTask.new do |t|

jaro_winkler.gemspec

@@ -8,11 +8,7 @@ Gem::Specification.new do |spec|
   spec.version = JaroWinkler::VERSION
   spec.authors = ['Jian Weihang']
   spec.email = 'tonytonyjan@gmail.com'
-  if RUBY_PLATFORM == 'java'
-    spec.platform = 'java'
-  else
-    spec.extensions = ['ext/jaro_winkler/extconf.rb']
-  end
+  spec.extensions = ['ext/jaro_winkler/extconf.rb'] if RUBY_ENGINE == 'ruby'
   spec.summary = 'Ruby & C implementation of Jaro-Winkler distance algorithm which both support UTF-8 string.'
   spec.description = %q{It's a implementation of Jaro-Winkler distance algorithm, it uses C extension and will fallback to pure Ruby version in JRuby. Both implementation supports UTF-8 string.}
   spec.homepage = 'https://github.com/tonytonyjan/jaro_winkler'

lib/jaro_winkler.rb

@@ -2,9 +2,8 @@
 
 require 'jaro_winkler/version'
 
-case RUBY_PLATFORM
-when 'java'
-  require 'jaro_winkler/jaro_winkler_pure'
-else
+if RUBY_ENGINE == 'ruby'
   require 'jaro_winkler/jaro_winkler_ext'
+else
+  require 'jaro_winkler/jaro_winkler_pure'
 end