Hi,
My requirement is to load an embedded lua script file using C api. I am
unable to load the script file using C apis like lual_loadfile or
lual_dofile because the path is not properly setup as I use relative
names. I have tried adding my path to package.path but still i get
"Cannot open <file>" error. I cannot modify luaconf.h file so changing
LUA_DEFAULT_PATH is out of question.
I set package.path using C-APIs & then try to use relative filenames but
it doesn't work. Is there any other way of specifying the path (from C)
so that lua C apis work with relative names? Absolute path works fine.
I can see that the code sets the package.path to
"./?.lua;/usr/share/lua/5.1/?.lua;/usr/share/lua/5.1/?/init.lua;/usr/lib/lua/5.1/?.lua;/usr/lib/lua/5.1/?/init.lua*;/path/to/mydir/?.lua;*
but still luaL_loadfile fails... [1]
My code is based on [2].
37 L = luaL_newstate();
38 luaL_openlibs(L); /* Load Lua libraries */
39 setLuaPath(L, "/path/to/mydir/");
40 status = luaL_loadfile(L, "my.lua");
41 if (status) {
42 printf("Couldn't load file: %s\n", lua_tostring(L, -1));
43 exit(1);
44 }
48 int setLuaPath( lua_State* L, const char* path )
49 {
50 char *cur_path;
51 size_t len;
52 char* mypath;
53 lua_getglobal( L, "package" );
54 lua_getfield( L, -1, "path" );
55 cur_path = lua_tostring( L, -1);
56 mypath = malloc(strlen(cur_path) + strlen(path) + 9);
57 strcpy(mypath,cur_path);
58 strcat(mypath,";");
59 strcat(mypath,path);
60 strcat(mypath,"?.lua;");
61 lua_pop( L, 1 );
62 lua_pushstring( L, mypath) ;
63 lua_setfield( L, -2, "path" );
64 lua_pop( L, 1 );
65 return 0;
66 }
[1] http://pastebin.com/xPjx8Vpy
[2]
http://stackoverflow.com/questions/4125971/setting-the-global-lua-path-variable-from-c-c
Thanks for your time,
Prasad
