init
This commit is contained in:
commit
4d0bf84355
6 changed files with 311 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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@ -0,0 +1 @@
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/target
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132
Cargo.lock
generated
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132
Cargo.lock
generated
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@ -0,0 +1,132 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "bitflags"
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version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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[[package]]
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name = "bitflags"
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version = "2.6.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "getrandom"
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version = "0.2.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
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dependencies = [
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"cfg-if",
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"libc",
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"wasi",
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]
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[[package]]
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name = "libc"
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version = "0.2.155"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
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[[package]]
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name = "libredox"
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version = "0.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3af92c55d7d839293953fcd0fda5ecfe93297cfde6ffbdec13b41d99c0ba6607"
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dependencies = [
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"bitflags 2.6.0",
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"libc",
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"redox_syscall",
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]
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[[package]]
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name = "matrixed"
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version = "0.1.0"
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dependencies = [
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"rand",
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"termion",
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]
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[[package]]
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name = "numtoa"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
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[[package]]
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name = "ppv-lite86"
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version = "0.2.17"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
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[[package]]
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name = "rand"
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version = "0.8.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
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dependencies = [
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"libc",
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"rand_chacha",
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"rand_core",
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]
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[[package]]
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name = "rand_chacha"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
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dependencies = [
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"ppv-lite86",
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"rand_core",
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]
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[[package]]
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name = "rand_core"
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version = "0.6.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
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dependencies = [
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"getrandom",
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]
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[[package]]
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name = "redox_syscall"
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version = "0.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4722d768eff46b75989dd134e5c353f0d6296e5aaa3132e776cbdb56be7731aa"
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dependencies = [
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"bitflags 1.3.2",
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]
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[[package]]
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name = "redox_termios"
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version = "0.1.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "20145670ba436b55d91fc92d25e71160fbfbdd57831631c8d7d36377a476f1cb"
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[[package]]
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name = "termion"
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version = "4.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1ccce68e518d1173e80876edd54760b60b792750d0cab6444a79101c6ea03848"
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dependencies = [
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"libc",
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"libredox",
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"numtoa",
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"redox_termios",
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]
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[[package]]
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name = "wasi"
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version = "0.11.0+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
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8
Cargo.toml
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8
Cargo.toml
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@ -0,0 +1,8 @@
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[package]
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name = "matrixed"
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version = "0.1.0"
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edition = "2021"
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[dependencies]
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rand = "0.8.5"
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termion = "4.0.2"
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3
README.md
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3
README.md
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@ -0,0 +1,3 @@
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# Matrixed
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Minimal cmatrix-like program that prints text from stdin.
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3
rustfmt.toml
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3
rustfmt.toml
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@ -0,0 +1,3 @@
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hard_tabs = true
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max_width = 120
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164
src/main.rs
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164
src/main.rs
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@ -0,0 +1,164 @@
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use std::io::{stdin, stdout, BufRead, Write};
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use std::iter::repeat;
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use std::sync::mpsc::{self, Sender};
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use std::thread;
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use std::time::Duration;
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use std::{collections::VecDeque, sync::mpsc::Receiver};
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use rand::{seq::IteratorRandom, thread_rng};
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use termion::terminal_size;
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use termion::{clear, cursor::Goto};
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fn main() {
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let mut screen = Screen::default();
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let lines = reading_thread();
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let mut queue = None;
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let mut stdout = stdout().lock();
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loop {
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// TODO : check for size
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let size = get_term_size();
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if screen.dim != size {
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screen.resize(size.0, size.1);
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}
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if queue.is_none() {
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if let Ok(received) = lines.try_recv() {
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queue = Some(received);
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}
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}
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if let Some((text, ok)) = &queue {
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let success = screen.append(text.clone());
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if success {
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ok.send(()).unwrap();
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queue.take();
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}
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}
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screen.step();
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stdout.write_all(screen.draw().as_bytes()).unwrap();
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stdout.flush().unwrap();
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thread::sleep(Duration::from_millis(100));
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}
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}
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fn reading_thread() -> Receiver<(String, Sender<()>)> {
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let (cmd_tx, cmd_rx) = mpsc::channel();
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thread::spawn(move || {
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let mut stdin = stdin().lock();
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loop {
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let mut line = String::new();
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stdin.read_line(&mut line).unwrap();
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let (tx, rx) = mpsc::channel();
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cmd_tx.send((line, tx)).unwrap();
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rx.recv().unwrap();
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}
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});
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cmd_rx
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}
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#[derive(Debug, Default)]
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struct Screen {
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dim: (usize, usize),
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lines: Vec<ScreenLine>,
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}
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impl Screen {
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pub fn resize(&mut self, width: usize, height: usize) {
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let (old_width, _) = self.dim;
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let width_difference = width.saturating_sub(old_width);
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let new_lines = repeat(ScreenLine::default()).take(width_difference);
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self.lines.truncate(width);
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self.lines.extend(new_lines);
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self.dim = (width, height);
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}
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pub fn append(&mut self, text: String) -> bool {
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if let Some(available) = self.find_available_line() {
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available.append(text);
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true
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} else {
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false
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}
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}
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pub fn draw(&self) -> String {
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let clear = clear::All;
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let mut sequence = format!("{clear}");
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let (_, height) = self.dim;
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for (x, line) in self.lines.iter().enumerate() {
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for text in &line.content {
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for (pos, letter) in text.content.chars().enumerate() {
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let y = pos as isize + text.progress;
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if y < 0 || y >= (height - 1) as isize {
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continue;
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}
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let goto = Goto((x + 1) as u16, (y + 1) as u16);
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sequence += &format!("{goto}{letter}");
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}
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}
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}
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let goto_topleft = Goto(1, 1);
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sequence += &format!("{goto_topleft}");
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sequence
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}
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pub fn step(&mut self) {
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let (_, height) = self.dim;
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for line in &mut self.lines.iter_mut() {
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line.step(height);
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}
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}
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fn find_available_line(&mut self) -> Option<&mut ScreenLine> {
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self.lines
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.iter_mut()
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.filter(|l| l.is_available())
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.choose(&mut thread_rng())
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}
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}
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#[derive(Debug, Clone, Default)]
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struct ScreenLine {
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content: VecDeque<Text>,
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}
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impl ScreenLine {
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pub fn is_available(&self) -> bool {
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let highest = self.content.back();
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highest.map(|t| t.progress >= 1).unwrap_or(true)
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}
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pub fn append(&mut self, text: String) {
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let content = text;
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let progress = -(content.len() as isize);
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self.content.push_back(Text { content, progress });
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}
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pub fn step(&mut self, height: usize) {
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for text in &mut self.content {
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text.progress += 1;
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}
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while let Some(last) = self.content.front() {
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if last.progress > height as isize {
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self.content.pop_front();
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} else {
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break;
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}
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}
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}
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}
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#[derive(Debug, Clone)]
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struct Text {
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pub content: String,
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pub progress: isize,
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}
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fn get_term_size() -> (usize, usize) {
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let (width, height) = terminal_size().unwrap_or((80, 40));
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(width as usize, height as usize)
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}
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