setting up structure

src/include/basic_defs.h

@@ -10,7 +10,11 @@
 extern const std::string main_version;
 extern const std::string build_version;
 extern std::shared_ptr<spdlog::logger> logger_ptr;
-extern const bool global_log_enabled;
+#ifndef ENABLE_ADVANCED_FEATURE
+constexpr bool global_log_enabled = false;
+#else
+constexpr bool global_log_enabled = true;
+#endif
 extern const bool optimize_enabled;
 #define LOG if constexpr (global_log_enabled) if (logger_ptr) logger_ptr
 #endif

src/include/data.h

@@ -0,0 +1,4 @@
+#ifndef DATA_H
+#define DATA_H
+
+#endif

src/include/engine.h

@@ -0,0 +1,47 @@
+#ifndef ENGINE_H
+#define ENGINE_H
+#include <map>
+#include <string>
+#ifdef ENABLE_ADVANCED_FEATURE
+#include "dataguard/dataguard.h"
+#include "dataguard/snapshot.h"
+#endif
+#include <vector>
+#include "utils.h"
+class TicketSystemEngine {
+#ifdef ENABLE_ADVANCED_FEATURE
+  SnapShotManager snapshot_manager;
+#endif
+  std::string data_directory;
+  std::map<hash_t, bool> online_users;
+  void PrepareExit();
+
+ public:
+  inline TicketSystemEngine(std::string data_directory) : data_directory(data_directory) {}
+  std::string Execute(const std::string &command);
+
+  // 用户相关函数
+  std::string AddUser(const std::string &command);
+  std::string LoginUser(const std::string &command);
+  std::string LogoutUser(const std::string &command);
+  std::string QueryProfile(const std::string &command);
+  std::string ModifyProfile(const std::string &command);
+
+  // 车次相关函数
+  std::string AddTrain(const std::string &command);
+  std::string DeleteTrain(const std::string &command);
+  std::string ReleaseTrain(const std::string &command);
+  std::string QueryTrain(const std::string &command);
+
+  // 订单相关函数
+  std::string BuyTicket(const std::string &command);
+  std::string QueryOrder(const std::string &command);
+  std::string RefundTicket(const std::string &command);
+
+  // 其他函数
+  std::string QueryTransfer(const std::string &command);
+  std::string QueryTicket(const std::string &command);
+  std::string Clean();
+  std::string Exit();
+};
+#endif

src/include/utils.h

@@ -0,0 +1,59 @@
+#ifndef UTILS_H
+#define UTILS_H
+#include <cstdint>
+#include <string>
+#include <string_view>
+typedef uint64_t hash_t;
+inline hash_t SplitMix64Hash(const std::string &str) noexcept {
+  // constexpr static char salt1[10] = "mL;]-=eT";
+  // constexpr static char salt2[10] = "9B<mF_me";
+  constexpr static char inner_salt[17] = "si9aW@zl#2$3%4^!";
+  /* Reference: http://xorshift.di.unimi.it/splitmix64.c */
+  // str = salt1 + str + salt2;
+  hash_t ret = 0;
+  int i = 0;
+  for (; i + 8 <= str.length(); i += 8) {
+    ret ^= *reinterpret_cast<const hash_t *>(str.c_str() + i);
+    ret ^= *reinterpret_cast<const hash_t *>(inner_salt + (i & 15));
+    ret += 0x9e3779b97f4a7c15;
+    ret = (ret ^ (ret >> 30)) * 0xbf58476d1ce4e5b9;
+    ret = (ret ^ (ret >> 27)) * 0x94d049bb133111eb;
+    ret ^= ret >> 31;
+  }
+  for (; i < str.length(); ++i) {
+    ret ^= str[i];
+    ret ^= inner_salt[i & 15];
+    ret += 0x9e3779b97f4a7c15;
+    ret = (ret ^ (ret >> 30)) * 0xbf58476d1ce4e5b9;
+    ret = (ret ^ (ret >> 27)) * 0x94d049bb133111eb;
+    ret ^= ret >> 31;
+  }
+  return ret;
+}
+inline hash_t SplitMix64Hash(const std::string_view &str) noexcept {
+  // constexpr static char salt1[10] = "mL;]-=eT";
+  // constexpr static char salt2[10] = "9B<mF_me";
+  constexpr static char inner_salt[17] = "si9aW@zl#2$3%4^!";
+  /* Reference: http://xorshift.di.unimi.it/splitmix64.c */
+  // str = salt1 + str + salt2;
+  hash_t ret = 0;
+  int i = 0;
+  for (; i + 8 <= str.length(); i += 8) {
+    ret ^= *reinterpret_cast<const hash_t *>(str.data() + i);
+    ret ^= *reinterpret_cast<const hash_t *>(inner_salt + (i & 15));
+    ret += 0x9e3779b97f4a7c15;
+    ret = (ret ^ (ret >> 30)) * 0xbf58476d1ce4e5b9;
+    ret = (ret ^ (ret >> 27)) * 0x94d049bb133111eb;
+    ret ^= ret >> 31;
+  }
+  for (; i < str.length(); ++i) {
+    ret ^= str[i];
+    ret ^= inner_salt[i & 15];
+    ret += 0x9e3779b97f4a7c15;
+    ret = (ret ^ (ret >> 30)) * 0xbf58476d1ce4e5b9;
+    ret = (ret ^ (ret >> 27)) * 0x94d049bb133111eb;
+    ret ^= ret >> 31;
+  }
+  return ret;
+}
+#endif