Find unzipped file size of zip file

[Guest]

Hi,

I know ColdFusion can check the size of uploaded files. I have an interesting question. How can ColdFusion check the unzipped file size of zip file?

For example, I zip a 10MB file to 8MB. How can ColdFusion return the file size 10MB, not 8MB?

[Adam Cameron.]

Do a list of the zip, then an arraySum() on the size column.  I don't think there's any etter way of doing it than that; the zip format doesn't seem to store that information as a single number:

http://en.wikipedia.org/wiki/Zip_%28file_format%29#Standardization

--

Adam