--- a/licenser/licenses.py	Mon May 10 12:28:59 2010 -0700
+++ b/licenser/licenses.py	Mon Dec 13 13:26:31 2010 -0800
@@ -70,33 +70,37 @@
   def pre(self, variables):
     """do anything that needs to be done before interpolation"""
 
+  def interpolate_file(self, _file, variables):
+
+    # get the file lines
+    f = file(_file)
+    lines = [ i.rstrip() for i in f.readlines() ]
+    f.close()
+    f = file(_file, 'w')
+
+    # print shebang if it exists
+    if lines[0].startswith('#!'):
+      shebang = lines.pop(0)
+      print >> f, shebang
+      print >> f
+
+    # print the license
+    g = file(self.template)
+    for line in g.readlines():
+      line = line.rstrip()
+      _template = Template(line)
+      print >> f, '# %s' % _template.substitute(**variables)
+    g.close()
+
+    # print the rest of the file
+    for line in lines:
+      print >> f, line.rstrip()
+    f.close()
+    
+
   def interpolate(self, directory, variables):
     for _file in self.files(directory):
-
-      # get the file lines
-      f = file(_file)
-      lines = [ i.rstrip() for i in f.readlines() ]
-      f.close()
-      f = file(_file, 'w')
-
-      # print shebang if it exists
-      if lines[0].startswith('#!'):
-        shebang = lines.pop(0)
-        print >> f, shebang
-        print >> f
-
-      # print the license
-      g = file(self.template)
-      for line in g.readlines():
-        line = line.rstrip()
-        _template = Template(line)
-        print >> f, '# %s' % _template.substitute(**variables)
-      g.close()
-
-      # print the rest of the file
-      for line in lines:
-        print >> f, line.rstrip()
-      f.close()
+      self.interpolate_file(_file, variables)
 
   def isempty(self, path):
     """

--- a/licenser/main.py	Mon May 10 12:28:59 2010 -0700
+++ b/licenser/main.py	Mon Dec 13 13:26:31 2010 -0800
@@ -101,8 +101,13 @@
 
     variables = license.obtain_variables()
 
-    for directory in args:
-        license.interpolate(directory, variables)
+    for arg in args:
+        if os.path.isdir(arg):
+            license.interpolate(arg, variables)
+        elif os.path.isfile(arg):
+            license.interpolate_file(arg, variables)
+        else:
+            raise IOError("File not found: '%s'" % arg)
 
 if __name__ == '__main__':
     main()