Wow ... Jannis Harder's solution is really short ....

This is base on Jannis Harder's solution (398 bytes) ...
We could make Jannis Harder's solution even shorter, for example:
(1) y.map!{|v|v<<32} could rewrite to y.map!{|v|v<<f}  ==> save 1 byte
(2) many ?: code like ?x: y could rewrite to ?x:y ( no need space
before y) ==> save n bytes
(3) and ... (see my code about my idea to make it even shorter )

Here is my even shorter solution ( base on Jannis Harder's solution ) 
it is 349 bytes ( 49 bytes shorter than Jannis Harder's solution )

s=$*.index("-s");s=(s ?$*.slice!(s,2)[1].to_i: 2)
i=$*.join.split("").map{|x|x.to_i}
d,="7krtt1r30v/s".unpack("m")[0].unpack("B*")
f=" "
a,b=f*s,f+"-"*s+f
c,e,o="|",a+f+f,49
y=([0]*5).map{""}
i.each{|z|u=d[z*7,7]
3.times{|x|y[x*2]<<(u[x*3]<o ?e:b)<<f}
[1,3].each{|x|y[x]<<(u[x==1?1:4]<o ?f:c)+a+(u[x==1?2:5]<0 ?f:c)<<f}}
y[1,1]*=s
y[2+s,1]*=s
puts y