WorkingWiki [1] is not a lightweight tool, and needs you to be assertively in control of your site's security, but can definitely do this. You would just need to add a one- or two-line make rule to your wiki page. I can provide more info if wanted.

[1] http://lalashan.mcmaster.ca/theobio/projects/index.php/WorkingWiki

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From: john borisjborissr@gmail.com

I have a Wiki page that holds a table of data. I have the data in an Excel file and also as a flat ASCI file. I am looking for a way to automate the updating of the page so when I make a change to the file on my one system I can run the script and it will make the changes on my Wiki.