--- a/licenser/licenses.py	Wed Nov 23 14:22:50 2011 -0800
+++ b/licenser/licenses.py	Wed Nov 23 14:29:17 2011 -0800
@@ -40,6 +40,18 @@
 from datetime import datetime
 from string import Template
 
+# types of comments
+
+def asterisk_omments():
+    pass
+
+def hash_comments():
+    pass
+
+type = {'py': hash_comments,
+        'sh': hash_comments,
+        'c':  asterisk_comments}
+
 class License(object):
   """Abstract base class for a license"""
 
@@ -58,6 +70,10 @@
   def print_license(self):
     print self.license()
 
+  def has_license(filename):
+      """does the file already have a license?"""
+      raise NotImplementedError
+
   def __call__(self, directory, **kw):
     variables = self.obtain_variables(**kw)
     self.interpolate(directory, variables)