Hi Bastien,
Given an image file name, how do you programmatically
retrieve the permalink?
E.g. given Kohila_vesiveski2.jpg I can easily infer http://commons.wikimedia.org/wiki/File:Kohila_vesiveski2.jpg but not
http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Kohila_vesiveski2.j...
Where does the "/2/24/" comes from? (The rest of the URL seems to follow a regular pattern.)
On wiki, you may use [[Special:FilePath]] < https://commons.wikimedia.org/w/index.php?title=Special%3AFilePath&file=...
Using the API, I *think* imageinfo is what you are looking for (but there might be a better way): < https://commons.wikimedia.org/wiki/Special:ApiSandbox#action=query&prop=...
Cheers,