In LaTeX is there a way to include the filename of a graphic into a caption?

Question

I have a LaTeX document with a large number of drawings included from external files with \includegraphics{bla.pdf}. The drawings are done in Inkscape. This all works fine. However sometimes it is hard to keep track of all the drawings and their source files. Hence I'm looking for a way to include the source file name, in the example bla.pdf, into the caption. Not being a LaTeX expert I haven't found a way to automatically access the filename string from the caption. Using Google-foo didn't yield a result either. Is there an existing way to refer to the filename and include it in the caption, like \caption{A fancy drawing of bla (\filename}?

Answer 1

Prepare a \newenvironment that sets up the \figure, calls \includegraphics and sets the caption.

Or one that makes a minipage and installs the graphic and a text-box for the caption if you don't want it in a float. For this you probably use \newcommand.

Answer 2

Redefine \includegraphics. For the case of no arguments (width=3cm, scale=2 or something like this) we have

\let \saveinclude \includegraphics
\def \includegraphics#1{\def\filename{#1}\saveinclude{#1}}

The use

\includegraphics{bla.pdf}
\caption{A fancy drawing of bla (\filename)}