On Tue, Apr 9, 2013 at 10:30 PM, Thijs Schreijer <[email protected]>wrote:
> Made the commandline arguments appear. The wrapper code loading the args
> and doing the pcall is here;
> https://github.com/keplerproject/luarocks/blob/master/src/bin/rclauncher.c#L47
>
Ah, I remember this problem from srlua. It really does need to build a
global 'arg' as well, since something like ldoc does actually use arg.
Sloppy, but very common.
A full solution would also set arg[-1] and arg[0] to sensible values. Here
is the equivalent function that calls the embedded Lua script from srlua.c
static int pmain(lua_State *L)
{
int argc=lua_tointeger(L,1);
char** argv=lua_touserdata(L,2);
int i;
const char *name = search_path(argv[0]);
if (name==NULL) fatal("srlua","cannot locate this executable");
lua_gc(L,LUA_GCSTOP,0);
luaL_openlibs(L);
lua_gc(L,LUA_GCRESTART,0);
load(L,name);
lua_createtable(L,argc,1);
for (i=0; i<argc; i++)
{
lua_pushstring(L,argv[i]);
lua_rawseti(L,-2,i);
}
lua_setglobal(L,"arg");
luaL_checkstack(L,argc,"too many arguments to script");
for (i=1; i<argc; i++)
{
lua_pushstring(L,argv[i]);
}
lua_call(L,argc-1,0);
return 0;
}
(Note that the first loop goes from 0 - these details matter ;))
>
> PS. Did this ever work?
>
I suppose it might have worked with simple tests ;)
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