隔壁隔壁的隔壁
#author linxu
#decrypt the message of cipher.txt
module rubytrain
split_key = ":"
class decoder
def initialize(path)
@path = path
@code_table = hash.new
get_code_table
end
attr_reader :path
def get_code_table
begin
file = file.new(@path, "r")
while (line = file.gets)
value,key = line.strip().split(split_key)
@code_table.store(key, value)
end
file.close
rescue => err
raise err
end
end
def decode(encrypted_message)
decrypted_message = string.new
encrypted_message.each_char{|e| decrypted_message << @code_table.fetch(e,e)}
return decrypted_message
end
end
end
def get_cipher_message(path)
cipher_message = string.new
begin
file = file.new(path, "r")
while (line = file.gets)
cipher_message << line
end
file.close
rescue => err
raise err
end
return cipher_message
end
coder = rubytrain::decoder.new './code_table.txt'
puts coder.decode 'b1eea v3pz!'
puts coder.decode(get_cipher_message './cipher.txt')
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