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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* lua.cc
*
* Thu May 29 16:30:50 CEST 2008
* Copyright 2008 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pracro.
*
* Pracro is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Pracro 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Pracro; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "lua.h"
LUA::LUA(Variables &variables)
{
L = luaL_newstate();
if(L == NULL) {
// throw LUADataParserException("Could not create LUA state.");
}
luaL_openlibs(L);
std::string preload;
Variables::iterator var = variables.begin();
while(var != variables.end()) {
preload += (*var).first + " = \"" + (*var).second + "\"\n";
var++;
}
// printf("preload: [%s]\n", preload.c_str());
int s = luaL_loadbuffer(L, preload.c_str(), preload.size(), "preload");
switch(s) {
case 0: //no errors;
break;
case LUA_ERRSYNTAX: //syntax error during pre-compilation;
case LUA_ERRMEM: //memory allocation error.
case LUA_ERRFILE: //cannot open/read the file.
//throw LUADataParserException(lua_tostring(L, lua_gettop(L)));
break;
default:
//throw LUADataParserException("Unknown return value of luaL_loadfile.");
break;
}
// Run program (init)
lua_pcall(L, 0, LUA_MULTRET, 0);
}
LUA::~LUA()
{
lua_close(L);
}
std::string LUA::run(std::string &program)
{
int s = luaL_loadbuffer(L, program.c_str(), program.size(), "program");
switch(s) {
case 0: //no errors;
break;
case LUA_ERRSYNTAX: //syntax error during pre-compilation;
case LUA_ERRMEM: //memory allocation error.
case LUA_ERRFILE: //cannot open/read the file.
//throw LUADataParserException(lua_tostring(L, lua_gettop(L)));
break;
default:
//throw LUADataParserException("Unknown return value of luaL_loadfile.");
break;
}
// Run the loaded code
lua_pcall(L, 0, LUA_MULTRET, 0);
std::string res = lua_tostring(L, lua_gettop(L));
lua_pop(L, 1);
return res;
}
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