LUALIB_API int luaL_loadfile (lua_State* L, const char* filename)
{
int z;
/* Try to locate the script on the filesystem */
lua_pushcfunction(L, os_locate);
lua_pushstring(L, filename);
lua_call(L, 1, 1);
/* If I found it, load it from the file system... */
if (!lua_isnil(L, -1)) {
z = original_luaL_loadfile(L, lua_tostring(L, -1));
}
/* ...otherwise try to load from embedded scripts */
else {
lua_pop(L, 1);
z = premake_load_embedded_script(L, filename);
/* Special case relative loading of embedded scripts */
if (z != OKAY) {
const char* script_dir;
lua_getglobal(L, "_SCRIPT_DIR");
script_dir = lua_tostring(L, -1);
if (script_dir && script_dir[0] == '$') {
/* call path.getabsolute() to handle ".." if present */
lua_pushcfunction(L, path_getabsolute);
lua_pushstring(L, filename);
lua_pushvalue(L, -3);
lua_call(L, 2, 1);
filename = lua_tostring(L, -1);
z = premake_load_embedded_script(L, filename + 2);
lua_remove(L, -3);
lua_remove(L, -3);
}
else {
lua_pop(L, 1);
}
}
}
/* Either way I should have ended up with the file name followed by the
* script chunk on the stack. Turn these into a closure that will call my
* wrapper below when the loaded script needs to be executed. */
if (z == OKAY) {
lua_pushcclosure(L, chunk_wrapper, 2);
}
else if (z == LUA_YIELD) {
lua_pushstring(L, "cannot open ");
lua_pushstring(L, filename);
lua_pushstring(L, ": No such file or directory");
lua_concat(L, 3);
}
return z;
}
LUALIB_API int luaL_loadfile (lua_State* L, const char* filename)
{
const char* script_dir;
const char* test_name;
int bottom = lua_gettop(L);
int z = !OKAY;
/* If the currently running script was embedded, try to load this file
* as it if were embedded too. */
lua_getglobal(L, "_SCRIPT_DIR");
script_dir = lua_tostring(L, -1);
if (script_dir && script_dir[0] == '$') {
/* Call `path.getabsolute(filename, _SCRIPT_DIR)` to resolve any
* "../" sequences in the filename */
lua_pushcfunction(L, path_getabsolute);
lua_pushstring(L, filename);
lua_pushvalue(L, -3);
lua_call(L, 2, 1);
test_name = lua_tostring(L, -1);
/* if successful, filename and chunk will be on top of stack */
z = premake_load_embedded_script(L, test_name + 2); /* Skip over leading "$/" */
/* remove test_name */
lua_remove(L, bottom + 1);
}
/* remove _SCRIPT_DIR */
lua_remove(L, bottom);
/* Try to locate the script on the filesystem */
if (z != OKAY) {
lua_pushcfunction(L, os_locate);
lua_pushstring(L, filename);
lua_call(L, 1, 1);
test_name = lua_tostring(L, -1);
if (!lua_isnil(L, -1)) {
z = original_luaL_loadfile(L, lua_tostring(L, -1));
}
/* on failure, remove test_name */
if (z != OKAY) {
lua_pop(L, 1);
}
}
/* Try to load from embedded scripts */
if (z != OKAY) {
z = premake_load_embedded_script(L, filename);
}
/* Either way I should have ended up with the file name followed by the
* script chunk on the stack. Turn these into a closure that will call my
* wrapper below when the loaded script needs to be executed. */
if (z == OKAY) {
lua_pushcclosure(L, chunk_wrapper, 2);
}
else if (z == LUA_YIELD) {
lua_pushstring(L, "cannot open ");
lua_pushstring(L, filename);
lua_pushstring(L, ": No such file or directory");
lua_concat(L, 3);
}
return z;
}