The project was moved to /~https://github.com/radareorg/cutter
We use AStyle 2.06 to format the code. The command line for formatting the code according to the style is:
AStyle --style=allman --convert-tabs --align-pointer=name --align-reference=name --indent=spaces --indent-namespaces --indent-col1-comments --pad-oper --pad-header --unpad-paren --keep-one-line-blocks --close-templates $(git ls-files *.cpp *.h *.c *.hpp)
If in doubt, check the source around you and follow that style!