Some functions to convert binary to hex and vice versa

convert-functions.rb

#!/usr/local/bin/ruby

# bin functions
def bin2dec(str)
		return eval("0b#{str}.to_i")
end

def bin2hex(str)
	return "todo"
end

# dec functions
def dec2bin(str)
	dec = str.to_i
	array = Array.new(8)
	array = Array.new(16) if dec>255
	for i in 1..array.size
		array[i] = dec % 2
		dec = dec/2
	end
	return array.reverse.to_s
end

def dec2hex(str)
	return "todo"
end

# hex functions
def hex2bin(str)
		return dec2bin(hex2dec(str))
end

def hex2dec(str)
		return str.hex
end

# print function
def my_print(bin, dec, hex)
	puts "#{bin}\t#{dec}\t#{hex}"
end

# num functions
def bin(str)
	bin = dec2bin(bin2dec(str))
	dec = bin2dec(str)
	hex = bin2hex(str)
	my_print(bin, dec, hex)
end

def dec(str)
	bin = dec2bin(str)
	dec = str
	hex = dec2hex(str)
	my_print(bin, dec, hex)
end

def hex(str)
	bin = hex2bin(str)
	dec = hex2dec(str)
	hex = str
	my_print(bin, dec, hex)
end