[-] thevoidzero@lemmy.world 1 points 2 days ago

How would the dog know, he's never been outside Utah.

[-] thevoidzero@lemmy.world 5 points 2 days ago

Now think, patents are similar things but for with more money. And imagine if someone else had similar idea and made slightly similar website you go sue them coz you had the idea first.

[-] thevoidzero@lemmy.world 2 points 3 days ago

Those topics seems a little advanced for a Linux user without cyber security knowledge though. I personally don't understand any of them lol. I know what hardening is, what CVEs are; but except for few anecdotes like the logj4, xz, etc, I don't think I'd know enough to talk about the cyber security side of linux.

I was thinking more along the side of daily life things. Like how programmer like linux because it's easier to develop things and manage environments and cross program compatibility.

[-] thevoidzero@lemmy.world 3 points 3 days ago

What would be interesting topics in Linux for you guys. I am in a Linux student club, have no experience with cyber security except the generic things, and we are looking to attract cyber security students since Linux doesn't have many students to maintain club status.

[-] thevoidzero@lemmy.world 1 points 3 days ago

What distribution of emacs are you using? What setup for rust? Because the run/debug things work on mine.

[-] thevoidzero@lemmy.world 2 points 5 days ago

Yeah, doing that in build.rs seems like a reasonable solution. Since we can't do that using proc macros.

I don't know if language server will keep giving me errors if the files are only linked through build.rs.

[-] thevoidzero@lemmy.world 1 points 5 days ago

Thank you. Yeah, something like this would work for me as I can add in a script and run it before compiling. But it won't be a cross platform solution and windows/mac users are probably not going to be able to do anything. Maybe if I do the same thing but from build.rs it'll work. I'll try that.

[-] thevoidzero@lemmy.world 1 points 5 days ago

That seems like a good compromise if I don't find something better. Thank you.

I'm hoping to make it easy for people to add more functions, that's why I want minimal code change required to add more functions.

[-] thevoidzero@lemmy.world 2 points 5 days ago

Thank you for your detailed response.

I am ok using macros. But even proc macro only get the tokens and using in on the whole mod is unstable unless you use use it on mod sth{...} instead of code being on in a different file (sth.rs).

The plug-in system is dynamic in a sense that my plans for it are loading them through shared libraries (.dll, .so) compiled separately by users. But I also have internally provided core plugins that come with the program. But rust ABI system is not that stable, so in worst case I might have to ask users to just add plugin code to some directory and re-compile program instead of loading from shared libraries. That's why I'm trying to make it as simple as possible. Asking users to modify the rust code somewhere else yo register the plugin might be met with resistance.

I was thinking that using build script to parse the source code and generating those codes could work, but that seemed hacky. So I was trying to see if there are better solutions, as it felt like a problem people might have come across themselves.

[-] thevoidzero@lemmy.world 21 points 5 days ago

Hey this solution seems to work but it's not perfect; I don't know how we can improve it, and nothing to replace it with, but let's take it down asap.

[-] thevoidzero@lemmy.world 2 points 6 days ago

He did not have to provide lifelong project and work on it. He just needed to donate his money and people in UN would have worked with that money. Even if it didn't work, he'd still have done a real great job by donating that much. And maybe we could have learn money is not the solution and we need to change approach.

[-] thevoidzero@lemmy.world 2 points 6 days ago

Thank you. I just put the call with !, I don't necessarily want a macro solution. Any solution is acceptable, my requirement is that I can just keep adding more mods with functions in src/functions/ and not have to register each function.

Inventory seems like the solution I am looking for. Although in my case, instead of collecting different values of the same type, I want to collect different types that all have same trait. But maybe I can make a temporary struct with Box<dyn _> member to collect it if trying to collect it directly doesn't work. I do not plan to support WASM. I am planning to make C/C++ and Python API for the libraries though, so if it has problems with them, then I might have a problem.

19
submitted 6 days ago* (last edited 6 days ago) by thevoidzero@lemmy.world to c/rust@programming.dev

Hi all.

I want to develop a plugin system within my program, and I have a trait that functions defined by plugins should implement.

Currently, my code gets all the functions in a HashMap and then calls them by their name. Problem is, I have to create that hashmap myself by inserting every function myself.

I would really appreciate it if there was a way to say, suppose, all pub members of mod functions:: that implement this trait PluginFunction call register(hashmap) function. So as I add more functions as mod in functions it'll be automatically added on compile.

Pseudocode:

Files:

src/
├── attrs.rs
├── functions
│   ├── attrs.rs
│   ├── export.rs
│   └── render.rs
├── functions.rs
├── lib.rs

Basically, in mod functions I want:

impl AllFunctions{
    pub fn new() -> Self {
       let mut functions_map = HashMap::new();[[
       register_all!(crate::functions::* implementing PluginFunction, &mut functions_map);
       Self { function_map }
  }
}

Right now I'm doing:

impl AllFunctions{
    pub fn new() -> Self {
       let mut functions_map = HashMap::new();[[
       crate::functions::attrs::PrintAttr{}.register(&mut functions_map);
       crate::functions::export::ExportCSV{}.register(&mut functions_map);
       crate::functions::render::RenderText{}.register(&mut functions_map);
       // More as I add more functions
       Self { function_map }
  }
}
11
submitted 3 weeks ago by thevoidzero@lemmy.world to c/linux@lemmy.ml

TLDR: I recently found out there is "deprecated" XFA format that acrobat still uses in their programs, and government forms have those for dynamic contents in the form that we cannot fill using other softwares. Looking for solutions.


This has been a problem since a long time. Back in 2020 I had dual boot because I needed acrobat to fill PDF forms, but after finding xournal++ program I nuked windows partition. Windows update messing up grub was one of the reason I decided to nuke windows and looking at the posts recently it's still a huge issue.

So the problem I recently encountered is that even the government issued PDF forms need acrobat reader (which is free software for PDF, but only available in windows and mac). Which I didn't think would be an issue and just filled the form in Firefox.

Turns out that was problematic as the PDF forms has fields that are automatically filled, calculated from other fields, only made available when certain checkboxes are checked, etc. and Firefox doesn't support that. Even trying to install the acrobat reader snap (which uses wine) in a VM and opening the PDF on it didn't work. The UI makes me think it's a really old version of the reader.

So without searching for other devices (and filling a PDF with my sensitive information) what solution is there? Installing windows is a hassle even in a VM, and it will use up precious SSD memory. But that's the only solution I can think of.

I also found masterpdf or something like that which the Arch wiki says has support for that, but it didn't work. It says XFA forms are converted to acro forms, and the dynamic part doesn't work. There are websites that promise to work for such forms, but I'm not going to be putting sensitive info on web apps.

48
submitted 4 weeks ago by thevoidzero@lemmy.world to c/linux@lemmy.ml

Hi everyone,

I'm hoping there are people here who work on FOSS and have applied for grants to support their software financially. I am applying for a grant opportunity that is asking for a software from US gov agency.

My requirements:

  • I want to publish it under Open Source Licenses like GPL (not MIT) so other corps can't take this to use on their product,
  • The grant agency will get the source code, they can do whatever as long as the license is held,
  • I will develop the features they want, and request during the duration of grant,
  • I will want to continue development independently after the grant, or apply for more grants from other organizations,
  • To clarify the previous point, I do not want to give them the final product so they own it, and I can no longer do anything on the program.

So, if anyone has done similar things, please give me advice on this. Their requirement says "a web repository" should be provided at the end, so I think I can apply with the intention of giving them the software code while keeping the rights. But I don't want to make a mistake in application/contract and lost the rights to the program, I want to develop a lot further than just the features they want for their use case.

Or at least dual license to protect the Open Source Side while giving the grant organization rights to take the code for their other programs because of the money they spent.

10

This feels like it should already be a feature in a terminal. But I didn't find anything that let me do this efficiently.

I had a rust library for converting list like 1-4,8-10 into vectors, but thought I'd expand it into a command line command as well, as it is really useful when I want to run batch commands in parallel using templates.

I wanted to share it since it might be a useful simple command for many people.

16

cross-posted from: https://lemmy.world/post/17984566

Hi all,

mpv communities seem to be tiny in lemmy, so I'm sharing it here.

This is a program I made for music control from local network.

You can run it in a computer with some local media files, or youtube links or any other links yt-dlp supports. And then with the server, you can control the media player and the playlist from any devices in your local network. So that you can just show a QR code or something to house guests for parties, or have it bookmarked within family to control the music.

I wanted to make something similar to how youtube app let's you play in TV and such, but my skills were not enough to do that. So I tried a simple alternative that works with computers. In an ideal world, I could make "Play with local mpv server" option come while on other android apps, but I have zero experience in android app development and it looks complicated.

I know some other programs also give option to control media, but I wanted to give it a go with a simple implementation. Making the web-server was a tricky part. Only tutorial from the rust book was useful here as every other web server developement in rust seems to be async ones using libraries so I would have to make a complicated system to communicate with the mpv. Using the simple Tcp connection let me make a thread with mpv instance in the scope. I do need to support https and file uploads and other things, but I haven't had any luck finding a solution that works with simple Tcp connection like in the tutorial. Let me know if you know anything.

Github: https://github.com/Atreyagaurav/local-mpv

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thevoidzero

joined 7 months ago