❄️ Fönn

This repo contains 2 projects: libfn, and Fönn. libfn is an editor engine that I'm working on for fun. Fönn is a code editor powered by libfn.

My primary goal is to eventually have a modern, capable TUI code editor that's powered by a reusable editing engine. The engine itself will eventually be exposed as a static library with a C API, but made in Zig. If I can get this project that far that is :)

A secondary goal is for fn to eventually have both a GUI and a TUI powered by this same text editing "engine".

Fönn (TUI)

❄️ Fönn: A code editor for fun.

This is currently a toy project, but fn is stable enough that I'm exclusively using it when working on changes to the editor.

My primary goal is to have a modern, capable TUI code editor. A secondary goal is for fn to eventually have both a GUI and a TUI powered by the same text editing "engine".

Build instructions

# Debug build in ./zig-out/bin/fn.
zig build

# Run debug build in current directory.
zig build run

# Open a file with debug build.
zig build run -- path/to/file

# Release build in ~/.local/bin/fn.
zig build --release=fast --prefix ~/.local

Usage

$ fn --help
Usage: fn [file]

General options:

  -h, --help     Print fn help
  -v, --version  Print fn version

libfn

If you're working on a Zig project and want to play around with the library itself you can do so by installing fun with zig fetch --save git+https://git.sr.ht/~reykjalin/fn.

Build instructions

# Make sure libfn builds.
zig build check

# Run tests.
zig build test

Usage

$ zig fetch --save git+https://tangled.org/@reykjalin.org/fn

Then, in your build.zig:

const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});

const libfn_dep = b.dependency("libfn", .{ .optimize = optimize, .target = target });

const root_module = b.createModule(.{
    .root_source_file = b.path("src/tui/main.zig"),
    .target = target,
    .optimize = optimize,
});

root_module.addImport("libfn", libfn_dep.module("libfn"));

const exe = b.addExecutable(.{
    .name = "example",
    .root_module = root_module,
});

b.installArtifact(exe);

and then you can import it in your code:

const libfn = @import("libfn");

// ...

const editor: libfn.Editor = .init(allocator);

Acknowledgements

• Tim Culverhouse - for his incredible work on libvaxis.
• CJ van den Berg - for his inspiring work on Flow Control.
• David Vanderson - for his work on DVUI, the inspiration for the TUI framework used to develop Fönn.