The documentation is on the page I gave you above (http://library.gnome.org/devel/glib/...-matching.html takes you directly). This would look to only give a TRUE/FALSE as to whether a string matches a pattern though, so may not be much help. It could present a starting point for string functions (http://library.gnome.org/devel/glib/...Functions.html) though (i.e. check which general format it matches before trying to pull out the relevant values).