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#include "liblua_wrapper.h"
#include <stdexcept>
LibLUAWrapper::LibLUAWrapper()
{
L = lua_open();
}
LibLUAWrapper::~LibLUAWrapper()
{
lua_close(L);
}
int LibLUAWrapper::loadFile(char *fname)
{
int s;
s = luaL_loadfile(L, fname);
switch(s) {
case 0:
break;
case LUA_ERRSYNTAX:
case LUA_ERRMEM:
case LUA_ERRFILE:
error = std::string(lua_tostring(L, lua_gettop(L)));
return 1;
default:
error = std::string("Unknown return value of luaL_loadfile.");
return 1;
}
s = lua_pcall(L, 0, LUA_MULTRET, 0);
switch(s) {
case 0:
break;
case LUA_ERRRUN:
case LUA_ERRMEM:
case LUA_ERRERR:
error = std::string(lua_tostring(L, lua_gettop(L)));
return 1;
default:
error = std::string("Unknown return value of lua_pcall.");
return 1;
}
return 0;
}
int LibLUAWrapper::getInteger(char *name)
{
lua_getfield(L, LUA_GLOBALSINDEX, name);
int top = lua_gettop(L);
int val = lua_tointeger(L, top);
lua_remove(L, top);
return val;
}
double LibLUAWrapper::getReal(char *name)
{
lua_getfield(L, LUA_GLOBALSINDEX, name);
int top = lua_gettop(L);
double val = lua_tonumber(L, top);
lua_remove(L, top);
return val;
}
bool LibLUAWrapper::getBoolean(char *name)
{
lua_getfield(L, LUA_GLOBALSINDEX, name);
int top = lua_gettop(L);
bool val = lua_toboolean(L, top);
lua_remove(L, top);
return val;
}
std::string LibLUAWrapper::getString(char *name)
{
lua_getfield(L, LUA_GLOBALSINDEX, name);
int top = lua_gettop(L);
std::string val = std::string(lua_tostring(L, top));
lua_remove(L, top);
return val;
}
std::string LibLUAWrapper::getError()
{
return error;
}
#ifdef LUA_TEST
int main()
{
LibLUAWrapper lua;
if(!lua.loadFile("test.lua")) {
printf("a: %f\n", lua.getReal("a"));
printf("b: %d\n", lua.getInteger("b"));
printf("c: %d\n", lua.getBoolean("c"));
printf("fisk: %s\n", lua.getString("fisk").c_str());
} else {
fprintf(stderr, "LUA load error: %s\n", lua.getError().c_str());
}
return 0;
}
#endif
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