bit-struct

RAA - bit-struct:

Bit-struct is now a gem on rubyforge! Use ‘gem install bit-struct’ to install. BitStruct Class for packed binary data stored in ruby Strings. BitStruct accessors, generated from user declared fields, use pack/unpack to treat substrings as fields with a specified portable format. Field types include signed and unsigned integer (1..16 bits, or 24, 32, 40, 48… bits) numeric fields (signed, unsigned, float) can be designated as any of the following endians: little, big, native, network (default) fixed point, with arbitrary scale factor fixed length character array null-terminated character array for printable text octets (hex and decimal representation options; useful for IP and MAC addrs) float nested BitStruct free-form "rest" field (e.g., for the variable-size payload of a packet) Installation ruby install.rb config ruby install.rb setup ruby install.rb install Uses BitStru...

Full article: http://raa.ruby-lang.org/project/bit-struct/