The FileSystem API is a replacement for Squeak's FileDirectory API. It separates the concerns of navigation and path manipulation from the actual accessing of the underlying file system implementation, be it the disk or a zip file. FileSystem has been adopted as the main file API in Pharo. The version published here is based on the latest version for Squeak. It was modified and extended to support the Git tools for Squeak.
FileSystem on the Squeak Wiki: http://wiki.squeak.org/squeak/3605
The new GitHub repository: https://github.com/squeak-smalltalk/squeak-filesystem
The old Squeaksource repository: http://www.squeaksource.com/fs.html
Colin Putney's original repository: http://source.wiresong.ca/fs/