If I do 'lua_dofile' and the file contains errors
(like syntax errors), lua returns and on my stack
there is one element (a table).
Better not use lua_dofile. It is `compatibilty code'
for Lua 4 compatibility and depends on a global _ALERT
function. In Lua 5 it's much nicer to use
luaL_loadfile (from lauxlib.h). It leaves an error
message (a string) on top of stack if something goes
wrong. Here's an example:
int my_dofile(lua_State *L, int nresults, const char
*name)
{
/* load script */
int rc = luaL_loadfile(L, name);
if (rc)
/* compile time error message on tos */
return rc;
/* execute script. Leaves error message on tos
in case of a run-time error */
return lua_pcall(L, 0, nresults, 0);
}
See luaB_dofile (the implementation of `dofile' in the
base lib) in lbaselib.c for another example
http://www.lua.org/source/5.0/src_lib_lbaselib.c.html#luaB_dofile
--
Wim
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