Module: StringTransformer

Included in:

String

Defined in:

lib/string_transformer.rb,
lib/string_transformer/version.rb

Constant Summary

VERSION =

"1.0.0"

@@key =

nil

@@encrypt =

""

@@original_str =

""

Instance Method Summary

• #decrypt ⇒ Object

  If @@key includes a key that is the same as the given string(encrypted string) then it will decrypt the string(return original string that was save as the value).

• #encrypt ⇒ Object

  The method encrypt replaces every character in a given string with the first 4 elements in encryption_arr.

• #encryption_arr ⇒ Object

  The method encryption_arr returns an array of characters that will replace each letter in a given string.

Instance Method Details

#decrypt ⇒ Object

If @@key includes a key that is the same as the given string(encrypted string) then it will decrypt the string(return original string that was save as the value)

# File 'lib/string_transformer.rb', line 24

def decrypt
  decrypt_str = self
  if @@key.keys.include?(decrypt_str)
    @@key[@@encrypt]
  else
    "Error! Can't decrypt. The string is not valid."
  end
end

#encrypt ⇒ Object

The method encrypt replaces every character in a given string with the first 4 elements in encryption_arr

# File 'lib/string_transformer.rb', line 15

def encrypt
  @@original_str = self
  @@encrypt = @@original_str.split("").map { |letter| letter.replace(encryption_arr.shuffle.first(4).join) }.join
  @@key = encryption_key(@@encrypt, @@original_str)
  @@encrypt
end

#encryption_arr ⇒ Object

The method encryption_arr returns an array of characters that will replace each letter in a given string

# File 'lib/string_transformer.rb', line 9

def encryption_arr
  encryption_string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*+><?1234567890"
  encryption_string.split("")
end