Added addressable gem for better URI handling

Signed-off-by: Markus Grobelin <grobi@koppzu.de>

Gemfile

@@ -12,6 +12,8 @@ if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('2.2.2')
   gem 'json', '< 2.0'
 end
 
+gem 'addressable', '~> 2.5'
+
 group :test do
   gem 'bundler', '~> 1.11'
   gem 'minitest', '~> 5.8'

lib/train.rb

@@ -117,7 +117,7 @@ def self.parse_uri(string)
     u = Addressable::URI.parse(string)
     # A use-case we want to catch is parsing empty URIs with a schema
     # e.g. mock://. To do this, we match it manually and fake the hostname
-    if u.scheme and (u.host.nil? or u.host.empty?) and u.path.empty?
+    if u.scheme && (u.host.nil? || u.host.empty?) && u.path.empty?
       case string
         when %r{^([a-z]+)://$}
           string += 'dummy'

train.gemspec

@@ -25,6 +25,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.0'
 
+  spec.add_dependency 'addressable', '~> 2.5'
   spec.add_dependency 'json', '>= 1.8', '< 3.0'
   # chef-client < 12.4.1 require mixlib-shellout-2.0.1
   spec.add_dependency 'mixlib-shellout', '~> 2.0'