upd: ready to write the database and engine

backend/src/bs-utility.cpp

@@ -1,5 +1,10 @@
 #include "bs-utility.h"
 
+namespace BookStore_ZYM {
+std::mutex debug_Print_Mutex;
+bool shut_down = false;
+}  // namespace BookStore_ZYM
+
 BlockingStringStream &BlockingStringStream::getline(std::string &str,
                                                     char delim) {
   std::unique_lock<std::mutex> lock(mutex);
@@ -43,10 +48,7 @@ void ReadWriteLock::endWrite() {
   is_writing = false;
   cv.notify_all();  // 唤醒所有等待的读操作和写操作
 }
-namespace BookStore_ZYM {
-std::mutex debug_Print_Mutex;
-bool shut_down = false;
-}  // namespace BookStore_ZYM
+
 void debugPrint() {
   BookStore_ZYM::debug_Print_Mutex.lock();
   std::cerr << std::endl;

backend/src/builtin-cli.cpp

@@ -22,7 +22,7 @@ void BookStoreMain(bool is_server, std::string config_dir) {
       if (BookStore_ZYM::shut_down) return;
     }
   } else {
-    throw FatalError("Not implemented yet", 1);
+    throw FatalError("Server mode has not been implemented yet", 1);
     std::unordered_map<std::string, SessionClass> session_map;
   }
 }

backend/src/database.cpp

@@ -0,0 +1,6 @@
+#include "database.h"
+
+void UserDataBase::Open(std::string file_name) {
+  full_user_data.OpenFile(file_name + ".full");
+  user_name2index.OpenFile(file_name + ".n2i");
+}

backend/src/engine.cpp

@@ -4,6 +4,11 @@
 #include <string>
 
 #include "bs-utility.h"
+
+BookStoreEngineClass::BookStoreEngineClass(std::string __config_dir) {
+  config_dir = __config_dir;
+  user_data_base.Open(config_dir + "user");
+}
 std::vector<std::string> BookStoreEngineClass::Execute(
     const std::string &cmd, std::stack<std::string> &login_stack) {
   if (cmd == "quit" || cmd == "exit") {