Added initial LUA code.

1 files changed, 91 insertions, 0 deletions

diff --git a/client/lua.cc b/client/lua.cc
new file mode 100644
index 0000000..46c8fbd
--- /dev/null
+++ b/client/lua.cc
@@ -0,0 +1,91 @@
+/* -*- 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++;
+  }
+  
+  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;
+}