I'm trying to learn how to use Lua with C, so by now I want to try running a script without loading it from a file, since I don't want to be bothered with messing up with files. Can anybody tell me which functions do I need to call for executing a simple string or what ever?
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3It's "Lua", not "LUA". See lua.org/about.html#name .lhf– lhf2010-01-30 22:39:01 +00:00Commented Jan 30, 2010 at 22:39
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2 Answers
You can use luaL_dostring to execute a script from a string.
If you need help with the basics (creating a Lua state, etc.), read part IV of Programming in Lua.
2 Comments
interjay
See how errors are handled in this example: lua.org/pil/24.1.html That code uses
luaL_loadbuffer and lua_pcall instead of luaL_dostring, but it should work the same way.I have created a function in my project to load Lua buffer, following is the code:
bool Reader::RunBuffer(const char *buff,char* ret_string,const char *name){
int error = 0;
char callname[256] = "";
if( m_plua == NULL || buff == NULL || ret_string == NULL ) return false;
if( name == NULL ){
strcpy(callname,"noname");
}else{
strcpy(callname,name);
}
error = luaL_loadbuffer(m_plua, buff, strlen(buff),callname) || lua_pcall(m_plua, 0, 1, 0);
if (error){
fprintf(stderr, "%s\n", lua_tostring(m_plua, -1));
lua_pop(m_plua, 1);
}else{
sprintf(ret_string, "%s", lua_tostring(m_plua, -1));
}
return true;
}
This code takes buff, and return ret_string. As @interjay said luaL_dostring is a choice.
