1 files changed, 31 insertions, 0 deletions
diff --git a/lib/active_file/filename.rb b/lib/active_file/filename.rb
new file mode 100644
index 0000000000..b3c184e26c
--- /dev/null
+++ b/lib/active_file/filename.rb
@@ -0,0 +1,31 @@
+class ActiveFile::Filename
+  include Comparable
+
+  def initialize(filename)
+    @filename = filename
+  end
+
+  def extname
+    File.extname(@filename)
+  end
+
+  def extension
+    extname.from(1)
+  end
+
+  def base
+    File.basename(@filename, extname)
+  end
+
+  def sanitized
+    @filename.encode(Encoding::UTF_8, invalid: :replace, undef: :replace, replace: "�").strip.tr("\u{202E}%$|:;/\t\r\n\\", "-")
+  end
+
+  def to_s
+    sanitized.to_s
+  end
+
+  def <=>(other)
+    to_s.downcase <=> other.to_s.downcase
+  end
+end