Question: Is this project still alive?

[io7m]

Not seen any commits for over a year, and the author doesn't appear to be on GitHub anymore...

[bensku]

So it seems. It seems to be mostly complete, luckily. Most missing parts are in standard library, so adding them won't be black magic if they are needed.

[JuKu]

Is there a newer fork, maybe?

[io7m]

https://github.com/wizards-of-lua/rembulan

[JuKu]

I have also fixed the build errors and pushed it to maven central (some minutes ago) yet: https://github.com/JuKu/rembulan

Because i don't own the domain rembulan.sandius.net i had changed the groupId to com.jukusoft .

[JuKu]

I hope the maintainer will maintain the library longer, because it's really useful!

[mkarneim]

https://github.com/wizards-of-lua/rembulan

Yeah, I created that fork. I’m working on the unfinished functions of the io lib because I need them for the Wizards of Lua Mod. It‘s almost done, regarding the features, but it’s not finished since it still needs some strong cleanup and refactoring. So be warned if you plan to use that code!

And yes, it would be nice to see this beautiful project staying alive.

[JuKu]

@mkarneim If you implemented I/O, this also means your fork isn't in sandbox mode anymore, right?

[mkarneim]

@mkarneim If you implemented I/O, this also means your fork isn't in sandbox mode anymore, right?

Well, yes, but ...

The final decision about whether Rembulan is running sandboxed is made at runtime when you populate the StateContext with the libraries you are interested in.

For example, by calling StandardLibrary.installInto() (as demonstrated in Getting Started):

StateContext state = StateContexts.newDefaultInstance();
Table env = StandardLibrary.in(RuntimeEnvironments.system()).installInto(state);

you will break the sandbox since IoLib and OsLib are included by default.

If you want to stay in the sandbox, you must skip this call and instead add the libraries manually, but without IoLib and OsLib:

StateContext state = StateContexts.newDefaultInstance();

RuntimeEnvironment environment = RuntimeEnvironments.system();
Table env = state.newTable();
ChunkLoader chunkLoader = CompilerChunkLoader.of("MyDummyMainProgram");
ClassLoader moduleLoader = ClassLoader.getSystemClassLoader();

BasicLib.installInto(state, env, environment, chunkLoader);
ModuleLib.installInto(state, env, environment, chunkLoader, moduleLoader);
CoroutineLib.installInto(state, env);
StringLib.installInto(state, env);
MathLib.installInto(state, env);
TableLib.installInto(state, env);
// Exclude these libs to keep the sandbox intact
// IoLib.installInto(state, env, environment);
// OsLib.installInto(state, env, environment);
Utf8Lib.installInto(state, env);

Of course you also could add the IoLib with some restricted environment, for example with a special FileSystem instance like Jimfs.

[mkarneim]

Just got this idea: another option could be to change the IoLib implementation so that it checks whether the FileSystem is null and then conditionally skips the declaration of those functions that depend on it.

[JuKu]

@mkarneim You are right!

Other question: Is the lua function dofile("my-other-script.lua") implemented anywhere in the standard library?

[mkarneim]

Other question: Is the lua function dofile("my-other-script.lua") implemented anywhere in the standard library?

Yes, it's here: https://github.com/mjanicek/rembulan/blob/master/rembulan-stdlib/src/main/java/net/sandius/rembulan/lib/BasicLib.java#L819

[JuKu]

@mkarneim Hmmm... It doesn't work in my lua file and i don't know why. How are you executing your lua files? First read string content and execute it or is there a method to execute the script directly?

[mkarneim]

Perhaps you should better open a new issue for your question and give some more background information.

However, maybe it helps to have a look at a little example that shows how to execute a Lua program programmatically and at the main class of rembulan's standalone interpreter that can execute files.