int LuaInterface::luaCppFunctionCallback(lua_State* L)
{
// retrieves function pointer from userdata
auto funcPtr = static_cast<LuaCppFunctionPtr*>(g_lua.popUpvalueUserdata());
assert(funcPtr);
int numRets = 0;
// do the call
try {
g_lua.m_cppCallbackDepth++;
numRets = (*(funcPtr->get()))(&g_lua);
g_lua.m_cppCallbackDepth--;
assert(numRets == g_lua.stackSize());
} catch(stdext::exception& e) {
// cleanup stack
while(g_lua.stackSize() > 0)
g_lua.pop();
numRets = 0;
g_lua.pushString(stdext::format("C++ call failed: %s", g_lua.traceback(e.what())));
g_lua.error();
}
return numRets;
}
void LuaInterface::loadFiles(std::string directory, bool recursive, std::string contains)
{
for(const std::string& fileName : g_resources.listDirectoryFiles(directory)) {
std::string fullPath = directory + "/" + fileName;
if(recursive && g_resources.directoryExists(fullPath)) {
loadFiles(fullPath, true, contains);
continue;
}
if(!g_resources.isFileType(fileName, "lua"))
continue;
if(!contains.empty() && fileName.find(contains) == std::string::npos)
continue;
try {
g_lua.loadScript(fullPath);
g_lua.call(0, 0);
} catch(stdext::exception& e) {
g_lua.pushString(e.what());
g_lua.error();
}
}
}
int LuaInterface::lua_loadfile(lua_State* L)
{
std::string fileName = g_lua.popString();
try {
g_lua.loadScript(fileName);
return 1;
} catch(stdext::exception& e) {
g_lua.pushNil();
g_lua.pushString(e.what());
g_lua.error();
return 2;
}
}
int LuaInterface::lua_dofile(lua_State* L)
{
std::string file = g_lua.popString();
try {
g_lua.loadScript(file);
g_lua.call(0, LUA_MULTRET);
return g_lua.stackSize();
} catch(stdext::exception& e) {
g_lua.pushString(e.what());
g_lua.error();
return 0;
}
}
