Informs about old style mnemonics from older wallet and provides a new one. CMakeLists.txt update.

src/mnemonics/electrum-words.cpp

@@ -50,6 +50,8 @@ namespace
   std::map<std::string,uint32_t> words_map;
   std::vector<std::string> words_array;
 
+  bool is_old_style_mnemonics = false;
+
   const std::string WORD_LISTS_DIRECTORY = "wordlists";
   const std::string LANGUAGES_DIRECTORY = "languages";
   const std::string OLD_WORD_FILE = "old-word-list";
@@ -103,10 +105,12 @@ namespace crypto
       if (old_word_list)
       {
         create_data_structures(WORD_LISTS_DIRECTORY + '/' + OLD_WORD_FILE);
+        is_old_style_mnemonics = true;
       }
       else
       {
         create_data_structures(WORD_LISTS_DIRECTORY + '/' + LANGUAGES_DIRECTORY + '/' + language);
+        is_old_style_mnemonics = false;
       }
       if (num_words == 0)
       {
@@ -115,6 +119,14 @@ namespace crypto
       }
     }
 
+    bool get_is_old_style_mnemonics()
+    {
+      if (is_uninitialized())
+      {
+        throw std::runtime_error("ElectrumWords hasn't been initialized with a word list yet.");
+      }
+      return is_old_style_mnemonics;
+    }
     /* convert words to bytes, 3 words -> 4 bytes
      * returns:
      *    false if not a multiple of 3 words, or if a words is not in the

src/mnemonics/electrum-words.h

@@ -45,5 +45,6 @@ namespace crypto
     bool words_to_bytes(const std::string& words, crypto::secret_key& dst);
     bool bytes_to_words(const crypto::secret_key& src, std::string& words);
     void get_language_list(std::vector<std::string> &languages);
+    bool get_is_old_style_mnemonics();
   }
 }