ruby - aidc2aidu

aidc2aidu.rb

@aidTable = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_"

def aidc2aidu(aid)
	aidu = 0

	aid.split('').each do |c|
		break if c == "@"
		if v = @aidTable.index(c)
			# aidu = aidu << 6
			# aidu = aidu | (v & 0x3f)
			aidu = aidu * 64 + v % 63
		else
			return 0
		end
	end

	return aidu
end

p aidc2aidu("9fM3MYRpR") # result : 2715110125190363