void wxLuaFreezeApp::OnLua(wxLuaEvent &event)
{
OutputPrint(event.GetString());
//if (event.GetEventType() == wxEVT_LUA_PRINT)
//else if (event.GetEventType() == wxEVT_LUA_ERROR)
}
bool wxLuaFreezeApp::OnInit()
{
#ifdef __WXGTK__
// this call is very important since otherwise scripts using the decimal
// point '.' could not work with those locales which use a different symbol
// (e.g. the comma) for the decimal point...
// It doesn't work to put os.setlocale('c', 'numeric') in the Lua file that
// you want to use decimal points in. That's because the file has been lexed
// and compiler before the locale has changed, so the lexer - the part that
// recognises numbers - will use the old locale.
setlocale(LC_NUMERIC, "C");
#endif
// load all image handlers for the wxLua script to make things easy
wxInitAllImageHandlers();
// Initialize the wxLua bindings we want to use.
// See notes for WXLUA_DECLARE_BIND_ALL above.
WXLUA_IMPLEMENT_BIND_ALL
m_fileName = argv[0]; // the filename of 'this' program
// When this function returns wxApp:MainLoop() will be called by wxWidgets
// and so we want the Lua code wx.wxGetApp:MailLoop() to not
// prematurely start it.
wxLuaState::sm_wxAppMainLoop_will_run = true;
m_wxlState = wxLuaState(this, wxID_ANY);
if (!m_wxlState.Ok())
return false;
// if no script attached try to run a the program on the command line
if (LoadScript(m_fileName, true) == LOADSCRIPT_MISSING)
{
if (argc > 1)
{
wxlua_pushargs(m_wxlState.GetLuaState(), argv, argc, 1);
// just run it, lua gives a nice error message on failure
m_wxlState.RunFile(argv[1]);
}
else
{
OutputPrint(wxString::Format(wxT("Expecting '<wxLuaFreeze:[script length]>' at end of '%s'.\n")
wxT("Did you forget to run wxluafreeze.lua to attach your script?\n")
wxT("You may run wxLua programs by specifying them on the command line."),
m_fileName.c_str()));
}
}
else
{
// now load our script to run that should have been appended to this file
// by wxluafreeze.lua
wxString script = LoadScript(m_fileName);
if (!script.IsEmpty())
{
wxlua_pushargs(m_wxlState.GetLuaState(), argv, argc, 0);
m_wxlState.RunString(script);
}
}
// no matter what - try to see any toplevel windows exist, if not then
// there's no way to exit so assume that the program is all done
wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
if (node)
return true;
return false;
}
wxString wxLuaFreezeApp::LoadScript(const wxString& filename, bool only_check)
{
// lots of debugging to make sure that everything is ok
wxFile f;
if (!f.Open(filename, wxFile::read))
{
OutputPrint(wxString::Format(wxT("Unable to open this executable file '%s' in read-only mode.\n"), filename.c_str()));
return wxEmptyString;
}
// end of file is : "<wxLuaFreeze:%010d>", script_len
#define END_TAG_LEN 24
if (f.Seek(-END_TAG_LEN, wxFromEnd) == wxInvalidOffset)
{
f.Close();
OutputPrint(wxString::Format(wxT("Unable to seek to last %d bytes at end of '%s'.\n"), END_TAG_LEN, filename.c_str()));
return wxEmptyString;
}
// do some sanity checking before reading the script length
char tag_buf[END_TAG_LEN+2] = {0};
memset(tag_buf, 0, sizeof(char)*(END_TAG_LEN+2));
long script_len = 0;
if (f.Read((void*)tag_buf, END_TAG_LEN) == wxInvalidOffset)
{
f.Close();
OutputPrint(wxString::Format(wxT("Unable to read wxLuaFreeze tag info at end of '%s'.\n"), filename.c_str()));
return wxEmptyString;
}
if (sscanf(tag_buf, "<wxLuaFreeze:%ld>", &script_len) != 1)
{
f.Close();
// they only wanted to know if the script exists, assume it's valid
if (only_check)
return LOADSCRIPT_MISSING;
OutputPrint(wxString::Format(wxT("Expecting '<wxLuaFreeze:[script length]>' at end of '%s'.\n")
wxT("Did you forget to run wxluafreeze.lua to attach your script?\n"), filename.c_str()));
return wxEmptyString;
}
else if (f.Seek(-END_TAG_LEN - script_len, wxFromEnd) == wxInvalidOffset)
{
f.Close();
OutputPrint(wxString::Format(wxT("Unable to seek to beginning of wxLua script at end of '%s'.\n"), filename.c_str()));
return wxEmptyString;
}
// size should be valid from Seek statement
char *script = (char*)malloc(script_len+2);
if (script)
{
memset(script, 0, sizeof(script_len+2));
f.Read(script, script_len);
script[script_len] = 0;
}
f.Close();
// we finally have our script!
wxString scriptStr(lua2wx(script));
free(script);
return scriptStr;
}
void HandlrApp::OnLuaError(wxLuaEvent &event) {
OutputPrint(event.GetString());
}
