1 files changed, 44 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/utils/uploaded_file.rb b/actionpack/lib/action_dispatch/utils/uploaded_file.rb
new file mode 100644
index 0000000000..97dffa089f
--- /dev/null
+++ b/actionpack/lib/action_dispatch/utils/uploaded_file.rb
@@ -0,0 +1,44 @@
+module ActionDispatch
+  module UploadedFile
+    def self.included(base)
+      base.class_eval do
+        attr_accessor :original_path, :content_type
+        alias_method :local_path, :path
+      end
+    end
+
+    def self.extended(object)
+      object.class_eval do
+        attr_accessor :original_path, :content_type
+        alias_method :local_path, :path
+      end
+    end
+
+    # Take the basename of the upload's original filename.
+    # This handles the full Windows paths given by Internet Explorer
+    # (and perhaps other broken user agents) without affecting
+    # those which give the lone filename.
+    # The Windows regexp is adapted from Perl's File::Basename.
+    def original_filename
+      unless defined? @original_filename
+        @original_filename =
+          unless original_path.blank?
+            if original_path =~ /^(?:.*[:\\\/])?(.*)/m
+              $1
+            else
+              File.basename original_path
+            end
+          end
+      end
+      @original_filename
+    end
+  end
+
+  class UploadedStringIO < StringIO
+    include UploadedFile
+  end
+
+  class UploadedTempfile < Tempfile
+    include UploadedFile
+  end
+end