Add ports devel/hachoir-core and devel/hachoir-parser:
Hachoir is the french name for a mincer: a tool used by butchers to cut
meat. Hachoir is also a tool written for hackers to cut file or any
binary stream. A file is splitted in a tree of fields where the smallest
field can be just a bit. There are various field types: integer, string,
bits, padding, sub file, etc.
hachoir-parser is a package of most common file format parsers written
using hachoir-core. Not all parsers are complete, some are very good
and other are poor: only parse first level of the tree for example.