I do actually have a tool like that for EU4: http://www.eu4wiki.com/ParserAs a suggestion to think about for the future, if Paradox makes tools to export data from games to a wiki capable format, it would be awesome to share that tool with mod makers so they can wikify the info for their mods.
Haven't updated it lately though, and it doesn't apply the templates that are now used for the info it outputs. I might redo it in a different language at some point since the code is quite messy.