Freshmeat page: http://freshmeat.net/projects/libferris/
libferris is a virtual filesystem that exposes hierarchical data of all kinds through a common C++ interface. Access to data is performed using C++ IOStreams and Extended Attributes (EA) can be attached to each datum to present metadata. Ferris uses a plugin API to read various data sources and expose them as contexts and to generate interesting EA. Current implementations include Native (kernel disk IO with event updates using fam), xml (mount an xml file as a filesystem), edb (mount a berkeley database), ffilter (mount an LDAP filter string) and mbox (mount your mailbox). EA generators include image, audio, and animation decoders.
This project has the following developers:
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!