1 files changed, 193 insertions, 0 deletions
diff --git a/src/database/database-sqlite3.h b/src/database/database-sqlite3.h
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+++ b/src/database/database-sqlite3.h
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+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#pragma once
+
+#include <cstring>
+#include <string>
+#include "database.h"
+#include "exceptions.h"
+
+extern "C" {
+#include "sqlite3.h"
+}
+
+class Database_SQLite3 : public Database
+{
+public:
+	virtual ~Database_SQLite3();
+
+	void beginSave();
+	void endSave();
+
+	bool initialized() const { return m_initialized; }
+protected:
+	Database_SQLite3(const std::string &savedir, const std::string &dbname);
+
+	// Open and initialize the database if needed
+	void verifyDatabase();
+
+	// Convertors
+	inline void str_to_sqlite(sqlite3_stmt *s, int iCol, const std::string &str) const
+	{
+		sqlite3_vrfy(sqlite3_bind_text(s, iCol, str.c_str(), str.size(), NULL));
+	}
+
+	inline void str_to_sqlite(sqlite3_stmt *s, int iCol, const char *str) const
+	{
+		sqlite3_vrfy(sqlite3_bind_text(s, iCol, str, strlen(str), NULL));
+	}
+
+	inline void int_to_sqlite(sqlite3_stmt *s, int iCol, int val) const
+	{
+		sqlite3_vrfy(sqlite3_bind_int(s, iCol, val));
+	}
+
+	inline void int64_to_sqlite(sqlite3_stmt *s, int iCol, s64 val) const
+	{
+		sqlite3_vrfy(sqlite3_bind_int64(s, iCol, (sqlite3_int64) val));
+	}
+
+	inline void double_to_sqlite(sqlite3_stmt *s, int iCol, double val) const
+	{
+		sqlite3_vrfy(sqlite3_bind_double(s, iCol, val));
+	}
+
+	inline std::string sqlite_to_string(sqlite3_stmt *s, int iCol)
+	{
+		const char* text = reinterpret_cast<const char*>(sqlite3_column_text(s, iCol));
+		return std::string(text ? text : "");
+	}
+
+	inline s32 sqlite_to_int(sqlite3_stmt *s, int iCol)
+	{
+		return sqlite3_column_int(s, iCol);
+	}
+
+	inline u32 sqlite_to_uint(sqlite3_stmt *s, int iCol)
+	{
+		return (u32) sqlite3_column_int(s, iCol);
+	}
+
+	inline float sqlite_to_float(sqlite3_stmt *s, int iCol)
+	{
+		return (float) sqlite3_column_double(s, iCol);
+	}
+
+	inline const v3f sqlite_to_v3f(sqlite3_stmt *s, int iCol)
+	{
+		return v3f(sqlite_to_float(s, iCol), sqlite_to_float(s, iCol + 1),
+				sqlite_to_float(s, iCol + 2));
+	}
+
+	// Query verifiers helpers
+	inline void sqlite3_vrfy(int s, const std::string &m = "", int r = SQLITE_OK) const
+	{
+		if (s != r)
+			throw DatabaseException(m + ": " + sqlite3_errmsg(m_database));
+	}
+
+	inline void sqlite3_vrfy(const int s, const int r, const std::string &m = "") const
+	{
+		sqlite3_vrfy(s, m, r);
+	}
+
+	// Create the database structure
+	virtual void createDatabase() = 0;
+	virtual void initStatements() = 0;
+
+	sqlite3 *m_database = nullptr;
+private:
+	// Open the database
+	void openDatabase();
+
+	bool m_initialized = false;
+
+	std::string m_savedir = "";
+	std::string m_dbname = "";
+
+	sqlite3_stmt *m_stmt_begin = nullptr;
+	sqlite3_stmt *m_stmt_end = nullptr;
+
+	s64 m_busy_handler_data[2];
+
+	static int busyHandler(void *data, int count);
+};
+
+class MapDatabaseSQLite3 : private Database_SQLite3, public MapDatabase
+{
+public:
+	MapDatabaseSQLite3(const std::string &savedir);
+	virtual ~MapDatabaseSQLite3();
+
+	bool saveBlock(const v3s16 &pos, const std::string &data);
+	void loadBlock(const v3s16 &pos, std::string *block);
+	bool deleteBlock(const v3s16 &pos);
+	void listAllLoadableBlocks(std::vector<v3s16> &dst);
+
+	void beginSave() { Database_SQLite3::beginSave(); }
+	void endSave() { Database_SQLite3::endSave(); }
+protected:
+	virtual void createDatabase();
+	virtual void initStatements();
+
+private:
+	void bindPos(sqlite3_stmt *stmt, const v3s16 &pos, int index = 1);
+
+	// Map
+	sqlite3_stmt *m_stmt_read = nullptr;
+	sqlite3_stmt *m_stmt_write = nullptr;
+	sqlite3_stmt *m_stmt_list = nullptr;
+	sqlite3_stmt *m_stmt_delete = nullptr;
+};
+
+class PlayerDatabaseSQLite3 : private Database_SQLite3, public PlayerDatabase
+{
+public:
+	PlayerDatabaseSQLite3(const std::string &savedir);
+	virtual ~PlayerDatabaseSQLite3();
+
+	void savePlayer(RemotePlayer *player);
+	bool loadPlayer(RemotePlayer *player, PlayerSAO *sao);
+	bool removePlayer(const std::string &name);
+	void listPlayers(std::vector<std::string> &res);
+
+protected:
+	virtual void createDatabase();
+	virtual void initStatements();
+
+private:
+	bool playerDataExists(const std::string &name);
+
+	// Players
+	sqlite3_stmt *m_stmt_player_load = nullptr;
+	sqlite3_stmt *m_stmt_player_add = nullptr;
+	sqlite3_stmt *m_stmt_player_update = nullptr;
+	sqlite3_stmt *m_stmt_player_remove = nullptr;
+	sqlite3_stmt *m_stmt_player_list = nullptr;
+	sqlite3_stmt *m_stmt_player_load_inventory = nullptr;
+	sqlite3_stmt *m_stmt_player_load_inventory_items = nullptr;
+	sqlite3_stmt *m_stmt_player_add_inventory = nullptr;
+	sqlite3_stmt *m_stmt_player_add_inventory_items = nullptr;
+	sqlite3_stmt *m_stmt_player_remove_inventory = nullptr;
+	sqlite3_stmt *m_stmt_player_remove_inventory_items = nullptr;
+	sqlite3_stmt *m_stmt_player_metadata_load = nullptr;
+	sqlite3_stmt *m_stmt_player_metadata_remove = nullptr;
+	sqlite3_stmt *m_stmt_player_metadata_add = nullptr;
+};