Lua做爲c++程序的配置文件
介紹下Lua做爲c++程序的配置文件的用法
大家可能習慣了用xml作爲配置文件,其實很多時候我們也可以使用腳本作爲程序的配置文件,這樣程序既可以添加入腳本
又可以使用配置文件,作爲一種腳本語言做配置文件自然可以,用lua的好處有幾個方面,
1.是它天生和c++程序結合非常好。
2.這樣可以減少整個工程的編譯次數(所有配置文件共同的好處)
3.容易進行跨平臺的移植
4.lua的解釋器非常小,不會使整個工程的體積變得臃腫
最常用的方式就是將要配置的東西放入table中。下面的代碼是從table中讀取數據的方法!如果有更好的可以提供出來一起分享一下!
最後附上讀取配置文件的常用源代碼:
- <span style="font-size:14px;">#ifndef READLUAVALUE_H
- #define READLUAVALUE_H
- #include <string>
- #include <lua.hpp>
- using namespace std;
- class LuaReadTable
- {
- public:
- LuaReadTable(){}
- ~LuaReadTable(){}
- void ReadTableFromKey_Int(lua_State *L, const char* lpszTableName, const char* lpszTableItem,int &int_value);
- void ReadTableFromIndex_Int(lua_State *L, const char* lpszTableName, int index,int &int_value);
- void ReadTableFromKey_String(lua_State *L, const char* lpszTableName, const char* lpszTableItem,string &string_value);
- void ReadTableFromIndex_String(lua_State *L, const char* lpszTableName, int index,string &string_value);
- void ReadTableFromKey_Double(lua_State *L, const char* lpszTableName, const char* lpszTableItem,double &double_value);
- void ReadTableFromIndex_Double(lua_State *L, const char* lpszTableName, int index,double &double_value);
- void ReadTableFromKey_UnsignedLong(lua_State *L, const char* lpszTableName, const char* lpszTableItem,unsigned long &unsigned_long_value);
- void ReadTableFromIndex_UnsignedLong(lua_State *L, const char* lpszTableName, int index,unsigned long &unsigned_long_value);
- void WriteTableFromKey_Int(lua_State *L, const char* lpszTableName, const char* lpszTableItem, int int_value);
- void WriteTableFromIndex_Int(lua_State *L, const char* lpszTableName, int index, int int_value);
- void WriteTableFromKey_String(lua_State *L, const char* lpszTableName, const char* lpszTableItem, string string_value);
- void WriteTableFromIndex_String(lua_State *L, const char* lpszTableName, int index, string string_value);
- void WriteTableFromKey_Double(lua_State *L, const char* lpszTableName, const char* lpszTableItem, double double_value);
- void WriteTableFromIndex_Double(lua_State *L, const char* lpszTableName, int index, double double_value);
- void WriteTableFromKey_UnsignedLong(lua_State *L, const char* lpszTableName, const char* lpszTableItem, unsigned long unsigned_long_value);
- void WriteTableFromIndex_UnsignedLong(lua_State *L, const char* lpszTableName, int index, unsigned long unsigned_long_value);
- void GetTableLenth(lua_State *L, const char* lpszTableName,int &length);
- };
- #endif // !READLUAVALUE_H
- </span>
- <span style="font-size:14px;">#include "ReadAndWriteLuaTableValue.h"
- void LuaReadTable::ReadTableFromKey_Int(lua_State *L, const char* lpszTableName, const char* lpszTableItem,int &int_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushstring(L, lpszTableItem);
- lua_gettable(L, -2);
- //printf("%s.%s=%d\n", lpszTableName, lpszTableItem, (int)lua_tonumber(L, -1));
- int_value = (int)lua_tonumber(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::ReadTableFromIndex_Int(lua_State *L, const char* lpszTableName, int index,int &int_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_rawgeti(L, -1, index);
- int_value = (int)lua_tonumber(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::ReadTableFromKey_String(lua_State *L, const char* lpszTableName, const char* lpszTableItem,string &string_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushstring(L, lpszTableItem);
- lua_gettable(L, -2);
- string_value = lua_tostring(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::ReadTableFromIndex_String(lua_State *L, const char* lpszTableName, int index,string &string_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_getglobal(L, lpszTableName);
- lua_rawgeti(L, -1, index);
- string_value = lua_tostring(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::ReadTableFromKey_Double(lua_State *L, const char* lpszTableName, const char* lpszTableItem,double &double_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushstring(L, lpszTableItem);
- lua_gettable(L, -2);
- double_value = (double)lua_tonumber(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::ReadTableFromIndex_Double(lua_State *L, const char* lpszTableName, int index,double &double_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_rawgeti(L, -1, index);
- double_value = (double)lua_tonumber(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::ReadTableFromKey_UnsignedLong(lua_State *L, const char* lpszTableName, const char* lpszTableItem,unsigned long &unsigned_long_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushstring(L, lpszTableItem);
- lua_gettable(L, -2);
- unsigned_long_value = (unsigned long)lua_tonumber(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::ReadTableFromIndex_UnsignedLong(lua_State *L, const char* lpszTableName, int index,unsigned long &unsigned_long_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_rawgeti(L, -1, index);
- unsigned_long_value = (unsigned long)lua_tonumber(L, -1);
- lua_pop(L, 2);
- }
- void LuaReadTable::WriteTableFromKey_Int(lua_State *L, const char* lpszTableName, const char* lpszTableItem, int int_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushnumber(L, int_value);
- lua_setfield(L, -2, lpszTableItem);
- lua_pop(L, 1);
- }
- void LuaReadTable::WriteTableFromIndex_Int(lua_State *L, const char* lpszTableName, int index, int int_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushnumber(L, int_value);
- lua_rawseti(L, -2, index);
- lua_pop(L, 1);
- }
- void LuaReadTable::WriteTableFromKey_String(lua_State *L, const char* lpszTableName, const char* lpszTableItem, string string_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushstring(L, string_value.c_str());
- lua_setfield(L, -2, lpszTableItem);
- lua_pop(L, 1);
- }
- void LuaReadTable::WriteTableFromIndex_String(lua_State *L, const char* lpszTableName, int index, string string_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushstring(L, string_value.c_str());
- lua_rawseti(L, -2, index);
- lua_pop(L, 1);
- }
- void LuaReadTable::WriteTableFromKey_Double(lua_State *L, const char* lpszTableName, const char* lpszTableItem, double double_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushnumber(L, double_value);
- lua_setfield(L, -2, lpszTableItem);
- lua_pop(L, 1);
- }
- void LuaReadTable::WriteTableFromIndex_Double(lua_State *L, const char* lpszTableName, int index, double double_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushnumber(L, double_value);
- lua_rawseti(L, -2, index);
- lua_pop(L, 1);
- }
- void LuaReadTable::WriteTableFromKey_UnsignedLong(lua_State *L, const char* lpszTableName, const char* lpszTableItem, unsigned long unsigned_long_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushnumber(L, unsigned_long_value);
- lua_setfield(L, -2, lpszTableItem);
- lua_pop(L, 1);
- }
- void LuaReadTable::WriteTableFromIndex_UnsignedLong(lua_State *L, const char* lpszTableName, int index, unsigned long unsigned_long_value)
- {
- lua_getglobal(L, lpszTableName);
- lua_pushnumber(L, unsigned_long_value);
- lua_rawseti(L, -2, index);
- lua_pop(L, 1);
- }
- void LuaReadTable::GetTableLenth(lua_State *L, const char* lpszTableName,int &length)
- {
- lua_getglobal(L, lpszTableName);
- length=lua_rawlen(L,-1);
- lua_pop(L, 1);
-
}</span>