1 files changed, 39 insertions, 0 deletions
diff --git a/lib/rubygems/uri_formatter.rb b/lib/rubygems/uri_formatter.rb
new file mode 100644
index 0000000000..deac3bfe75
--- /dev/null
+++ b/lib/rubygems/uri_formatter.rb
@@ -0,0 +1,39 @@
+require 'uri'
+
+class Gem::UriFormatter
+  attr_reader :uri
+
+  def initialize uri
+    @uri = uri
+  end
+
+  def escape
+    return unless @uri
+    escaper.escape @uri
+  end
+
+  ##
+  # Normalize the URI by adding "http://" if it is missing.
+
+  def normalize
+    (@uri =~ /^(https?|ftp|file):/i) ? @uri : "http://#{@uri}"
+  end
+
+  def unescape
+    return unless @uri
+    escaper.unescape @uri
+  end
+
+  private
+
+  def escaper
+    @uri_parser ||=
+      begin
+        URI::Parser.new
+      rescue NameError
+        URI
+      end
+  end
+
+end
+