When gNewSense GNU/Linux migrated their web site from PmWiki to MoinMoin, I volunteered to write a script to get the job done. These were the requirements:
- Convert ~1500 pages with attachments without losing any data or formatting
- Migrate 4 years worth of revision history (>10000 edits)
- Import ~2500 user accounts
The versions that we used on the gNewSense web site were PmWiki 2.1.27 and MoinMoin 1.7.3 (also tested with 1.9.3).
The gNewSense web site after the migration to MoinMoin
I modified the PmWiki engine so that it produces intermediate markup instead of HTML. The intermediate markup is then converted to MoinMoin markup by a Python script.
I decided against writing my own PmWiki parser based on one of the existing scripts listed on the MoinMoin web site. These scripts were written for older PmWiki versions, and getting them to understand all the details of PmWiki markup the way PmWiki does would have been quite a challenge in any case.
By having PmWiki produce intermediate markup, I leave the hard work to PmWiki itself, while still retaining the semantic information that might not be available in the HTML anymore (for example, a Table of Contents might look like any ordered list in HTML; on the markup level, it’s something entirely different).
Älgspotting Blog
Flickr Photostream
Google+
Spotify
YouTube