Re: Existence of a luabind::execute_file function ?

thx a lot for your code, I've got it working.

On Wed, Mar 16, 2011 at 12:33 AM, Tony Kostanjsek <[email protected]>wrote:

> hi,
>
> here's what we do in our project, maybe it's of some help. It's
> deliberately only the doString part because file loading is a bit more
> involved (multiple possible locations). The return value/exception throwing
> combination is debatable.
>
> best,
> Tony
>
> int State::doString(const std::string& inData)
> {
>   // execute the loaded file and handle errors
>   int err = luaL_loadstring(state, inData.c_str());
>   if(!err)
>   {
>     err = luabind::detail::pcall(state, 0, LUA_MULTRET);
>   }
>   if(err)
>   {
>     std::string errcode;
>     switch(err)
>     {
>       case LUA_YIELD:errcode="LUA_YIELD";break;
>       case LUA_ERRRUN:errcode="LUA_ERRRUN";break;
>       case LUA_ERRSYNTAX:errcode="LUA_ERRSYNTAX";break;
>       case LUA_ERRMEM:errcode="LUA_ERRMEM";break;
>       case LUA_ERRERR:errcode="LUA_ERRERR";break;
>       default:errcode="??";break;
>     }
>     std::string errstring;
>     const char* errstringc = lua_tostring(state, -1);
>     lua_pop(state,1);
>     if (errstringc != NULL)
>     {
>       errstring = errstringc;
>       throw LoadException(getScriptFilename(inData, inData) +" "+ errcode
> +": "+ errstring);
>     }
>     else
>     {
>       throw LoadException(getScriptFilename(inData, inData) +" "+ errcode
>  +"");
>     }
>   }
>   return err;
> }
>
>
> ------------------------------
> *Von:* Teto <[email protected]>
> *An:* Ryan Pavlik <[email protected]>
> *CC:* [email protected]
> *Gesendet:* Mittwoch, den 16. März 2011, 0:11:56 Uhr
> *Betreff:* Re: [luabind] Existence of a luabind::execute_file function ?
>
> Just want to make sure before starting and after consulting the pil (
> http://www.lua.org/pil/25.2.html) and this page :
> http://www.corsix.org/content/common-lua-pitfall-loading-code, I should
> push the error handler function on the stack before loading file ( since
> loading file basically embeds the file into a function and pushes it onto
> the stack). Only then can I call pcall ?
>
> So in lua:
> -push error handler
> -load file
> -lua_pcall(L, 0,LUA_MULTRET, lua_gettop(L)-1)  ?
>
> I could also use luabind::detail::pcall(L,1,0) so that the error handler is
> "lua_inserted" under the loaded file chunk ?
>
>
> Nb: Just to be sure is answer http://www.luafaq.org/#T7.6 correct ? it
> looks correct to me but as it is an unofficial FAQ...
>
> On Mon, Mar 14, 2011 at 3:43 AM, Ryan Pavlik <[email protected]> wrote:
>
>> While it's not as elegant, you could run the string "dofile('whatever')".
>>  Or, just fork Luabind on Github and add the header you'd like yourself. I'd
>> find it handy too.
>>
>> Ryan
>>
>> On Sun, Mar 13, 2011 at 5:58 PM, Teto <[email protected]> wrote:
>>
>>> Hi,
>>>
>>> I started lua with luabind using it (or wanting to use it) as a C++
>>> wrapper for lua. It allowed me to run my first lua script very quickly
>>> (in a day) but also allowed me to avoid learning about lua inner
>>> mechanisms (which was a bad thing, I had quite some difficulties to
>>> getmyself learning the C api after that, I would recommand anyone to
>>> start using lua without luabind and after some time to resort to
>>> luabind)
>>> I was wrong since many things are not possible with luabind alone. You
>>> have to use lua functions. I was wondering to what extent luabind was
>>> meant to complete lua. For example, is there any project to create a
>>> function that replaces lua_loadfile || lua_pcall such as int
>>> luabind::execute_file(const char*).
>>> It would basically push the error callback function, load the file
>>> chunk and then do an appropriate pcall and pop the callback function.
>>> Does that go into the attribution of luabind ? or is luabind focusing
>>> on binding only ?
>>>
>>> Regards
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Colocation vs. Managed Hosting
>>> A question and answer guide to determining the best fit
>>> for your organization - today and in the future.
>>> http://p.sf.net/sfu/internap-sfd2d
>>> _______________________________________________
>>> luabind-user mailing list
>>> [email protected]
>>> https://lists.sourceforge.net/lists/listinfo/luabind-user
>>>
>>
>>
>>
>> --
>> Ryan Pavlik
>> HCI Graduate Student
>> Virtual Reality Applications Center
>> Iowa State University
>>
>> [email protected]
>> http://academic.cleardefinition.com
>> Internal VRAC/HCI Site: http://tinyurl.com/rpavlik
>>
>
>
>

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