Truncate file to size

[dcsobral]

I'm trying to use mod_zip to send a folder full of logs, but I stumble upon a problem. If the file is bigger than the size specified on the list, mod_zip will send the full file, resulting in a corrupted zipfile. Since log files get appended to often, this often results in downloads that seem to be successful but consists of a corrupted file.

Truncating the content sent to the specified size would solve the issue neatly.