Certain functions of DokuWiki are currently designed to work within the fixed Web-GUI workflow only. To ease implementation of WebDAV, XMLRPC or Unit Tests these parts should be made more flexible. Assumptions about the environment should be removed from functions.

• saveWikiText
  • missing a clean way to signal the outcome of the various things involved (no return value)
• io_createNamespace
  • no return value
• a lot of stuff in inc/media.php
  • relies on the $_FILE array, should made to work with arbitrary filehandles
  • eg. move uploaded file to tmp, open a file handle and pass it on to the various other functions

Many functions send errors directly to the user using the msg() function. This does not work in a non Web-Environment.

Ideally all errors should be signaled by return values. Or a streamlined output-independent system should be used.

PHP5 Exceptions would be an ideal candidate.