This package looks over your shoulder and keeps track of files \input’ed (the LaTeX way) or \include’ed in your document. You then have permanent access to the name of the file currently being processed through the macro \finkfile. FiNK also comes with support for AUC-TeX.

The author is Didier Verna. The package is Copyright © 1999-2002,2007-2008 Didier Verna.