number_to_tw_phone

[CFC]

def number_to_tw_phone(phone, cellphone=false)
raise "Phone number error!" if phone.size < 9 || phone.size > 10
|| (phone.size < 10 if cellphone)
no = phone.split("")
return %{#{no[0..3].join}-#{no[4..6]}-#{no[7..9]}} if cellphone
return %{(#{no[0..2].join})#{no[3..5]}-#{no[6..8].join}} if no
[0..2].join == "089" # Tai-dong
return %{(#{no[0..1].join})#{no[2..4]}-#{no[5..8].join}} if
phone.size == 9
return %{(#{no[0..1].join})#{no[2..5]}-#{no[6..9].join}} if
phone.size == 10
end
puts number_to_tw_phone("0987654321", true) #=> 0987-654-321
puts number_to_tw_phone("0234567890") #=> (02)3456-7890
puts number_to_tw_phone("087654321") #=> (08)765-4321
puts number_to_tw_phone("089876543") #=> (089)876-543 #=> 這
是台東的電話

:)