lua script 解析库

				-- hex dump				-- usage: lua xd.lua < file								local offset=0				while true do				 local s=io.read(16)				 if s==nil then return end				 io.write(string.format("%08X  ",offset))				 string.gsub(s,"(.)",					function (c) io.write(string.format("%02X ",string.byte(c))) end)				 io.write(string.rep(" ",3*(16-string.len(s))))				 io.write(" ",string.gsub(s,"%c","."),"\n") 				 offset=offset+16				end