upd: ready to lex the command

backend/include/bs-utility.h

@@ -140,4 +140,21 @@ class OperationLogItemClass {
   char command[256];
   int fid;
 };
+
+enum OperationType {
+  __Ksu,
+  __Klogout,
+  __Kregister,
+  __Kpasswd,
+  __Kuseradd,
+  __Kdelete,
+  __Kshow,
+  __Kbuy,
+  __Kselect,
+  __Kmodify,
+  __Kimport,
+  __Kshowfinance,
+  __Klog,
+  __Kreport,
+};
 #endif  // PROTECTOR_UTILITY_H

backend/include/engine.h

@@ -5,13 +5,14 @@
 #include <vector>
 
 #include "database.h"
+#include "lexer.h"
 class BookStoreEngineClass {
   std::string config_dir;
   UserDataBase user_data_base;
-
+  bool is_server;
  public:
   BookStoreEngineClass() = delete;
-  BookStoreEngineClass(std::string __config_dir);
+  BookStoreEngineClass(std::string __config_dir, bool __is_server);
   std::vector<std::string> Execute(const std::string &cmd,
                                    std::stack<std::string> &login_stack);
 };

backend/include/lexer.h

@@ -0,0 +1,10 @@
+#ifndef PROTECTOR_LEXER_H
+#define PROTECTOR_LEXER_H
+#include <regex>
+#include <sstream>
+#include <string>
+#include <vector>
+bool CommandShowLexer(const std::string &command, std::string &ISBN,
+                      std::string &name, std::string &author,
+                      std::string &keyword);
+#endif  // PROTECTOR_LEXER_H