Interesting, this is basically a very simple interpreter with a REPL. You should look into interpreters if this is something you enjoyed creating, there are many efficient and simple algorithms you could use to make this program a lot simpler and even more advanced too. For instance, recursive descent parsing, and the shunting yard algorithm.
Only thing I could think of is that you can transfer it from one computer to another quickly. And you don't need to create an account (like say if I transferred it through DropBox), just type in a password.
Right, so you encrypt locally, upload to Dropbox, pass the link to your friend, and they decrypt locally. Still not seeing why you'd opt to trust this doohickey.
I always found DropBox a pain, you have to email them the link, which is a bit more effort than saying going to a short URL and typing in a password. So I could see this being somewhat useful :)
If you've invented the most convenient file transfer tool on the whole Internet, you've buried the lede here; forget about the encryption, and get your Dropbox-competitor funded.
If you haven't, well, people should use that other service instead of this one.
Either way: I'm still totally unclear on why anyone would allow a server to encrypt files for them. I don't even reach the question of whether it's possible to do it securely, because it seems like such a weird thing to want.
I'm most proud of my compiler for my programming language, it's still in the works, but the fact that it does somewhat work and I made it from scratch makes me happy :)
Hmm, I'm using Menlo which is monospaced correct? Oh, are you on a PC? Maybe that just comes on a Mac. I created an issue and will look into it. Thanks!
Ah, that's a Mac font. I'm on Linux, but you should try a more general monospaced font like Consolas, or there's probably one on Google Fonts you can use.
May as well add to this, but we're actually looking for contributors to help out, so if you're interested in working on a fairly new language then send us a PR :)
