Re: Passing binary data to dll

[Digital <forumme5487@...>]

Yes the strlen was left in there as a test. To demonstrate.

And I let the lua func "size_t len = 0;" take care of it. But regardless 
it doesn't work.

On 8/15/2012 8:10 AM, Coda Highland wrote:
> On Tue, Aug 14, 2012 at 3:29 PM, Digital <forumme5487@live.com> wrote:
> >  From within lua
> >
> > //------------------------------
> > somevar = require "modulename";
> > data = "binary data";
> > somevar.testfunc(data);
> > //-------------------------------
> >
> > It works for anything normal like string "abc123" but as soon as I add
> > binary data it stops functioning.
> Why are you using string functions in C? strlen is going to break on
> embedded nulls, for example. If you're storing, say, numbers as 32-bit
> big-endian values, you're going to hit an embedded null very early on
> and your C code will fail.
>
> Your Lua code is probably fine. Just use the Lua C API to find the
> length of the binary data (Lua uses length-tagged strings, not
> null-terminated) and deal with it that way.
>
> /s/ Adam