Re: how to send lua table to c/c++ by luajit.ffi ?
- From: cosnis zhang <cosnis@xxxxxxxxx>
- To: Coda Highland <chighland@xxxxxxxxx>, luajit@xxxxxxxxxxxxx
- Date: Wed, 27 Nov 2013 11:17:14 +0800
ok, i try it later.
thanks very much~
--
cosnis zhang
On 2013年11月27日 at 上午11:16:06, Coda Highland (chighland@xxxxxxxxx) wrote:
On Tue, Nov 26, 2013 at 7:09 PM, cosnis zhang <cosnis@xxxxxxxxx> wrote:
> thanks, but if i don’t know how much char’s in the struct, and how to do…
If they're all the same data type, LuaJIT does offer variable-length arrays.
http://luajit.org/ext_ffi_api.html
This is likewise untested, but I think it'd be something like:
local vla = ffi.new("char*[?]", #t, unpack(t))
myCFunction(#t, vla)
Remember that there's no way to inspect the length of an array in C so
you'll have to pass the length explicitly to the function.
/s/ Adam
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