use std::env;
use std::io::{self, Read, Write};
use std::process::Command;
use std::thread;
use std::time::Duration;
use aisling::{
Cell, Color, Effect, EffectConfig, EffectKind, Frame, Gradient, GradientDirection, Loader,
LoaderConfig, LoaderKind, LoaderProgress,
};
fn main() {
let args = Args::parse();
let (terminal_width, terminal_height) = terminal_size();
let width = terminal_width.max(118);
let catalog_rows = LoaderKind::all().len().div_ceil((width / 11).max(1));
let height = terminal_height.max(6 + 3 + catalog_rows + 2 + 18);
let fps = args.fps.max(1);
let focus_ticks = (args.focus_seconds.max(1) * fps) as usize;
let total_ticks = args.seconds.map(|seconds| (seconds * fps) as usize);
let layout = Layout::new(width, height, LoaderKind::all().len());
let panes = build_panes(
layout.hero_inner_width(),
layout.hero_banner_height(),
focus_ticks.max(8),
);
let mut focus = args
.focus
.unwrap_or(1)
.saturating_sub(1)
.min(panes.len() - 1);
let mut manual_focus = args.focus.is_some();
let frame_delay = Duration::from_millis((1000 / fps) as u64);
let mut stdout = io::stdout();
let mut guard = TerminalGuard::enter(&mut stdout, args.alt_screen);
let mut tick = 0usize;
loop {
if let Some(input) = guard.poll_input() {
match input {
Input::Next => {
focus = (focus + 1) % panes.len();
manual_focus = true;
}
Input::Prev => {
focus = (focus + panes.len() - 1) % panes.len();
manual_focus = true;
}
Input::Auto => manual_focus = false,
Input::Quit => break,
}
}
let auto_focus = (tick / focus_ticks) % panes.len();
let active = if manual_focus { focus } else { auto_focus };
let frame = compose_lab(
&layout,
&panes,
active,
tick,
focus_ticks,
args.progress_seconds.max(4),
manual_focus,
);
write!(stdout, "\x1b[H{}\x1b[0m", frame.to_ansi_string()).unwrap();
stdout.flush().unwrap();
tick += 1;
if args.once || total_ticks.is_some_and(|limit| tick >= limit) {
break;
}
thread::sleep(frame_delay);
}
}
#[derive(Clone, Debug)]
struct Args {
seconds: Option<u64>,
fps: u64,
focus_seconds: u64,
progress_seconds: u64,
focus: Option<usize>,
once: bool,
alt_screen: bool,
}
impl Args {
fn parse() -> Self {
let mut args = env::args().skip(1);
let mut parsed = Self {
seconds: Some(120),
fps: 10,
focus_seconds: 7,
progress_seconds: 28,
focus: None,
once: false,
alt_screen: true,
};
while let Some(arg) = args.next() {
match arg.as_str() {
"--seconds" => parsed.seconds = args.next().and_then(|value| value.parse().ok()),
"--fps" => {
parsed.fps = args
.next()
.and_then(|value| value.parse().ok())
.unwrap_or(parsed.fps)
}
"--focus-seconds" | "--page-seconds" => {
parsed.focus_seconds = args
.next()
.and_then(|value| value.parse().ok())
.unwrap_or(parsed.focus_seconds)
}
"--progress-seconds" => {
parsed.progress_seconds = args
.next()
.and_then(|value| value.parse().ok())
.unwrap_or(parsed.progress_seconds)
}
"--focus" | "--page" => {
parsed.focus = args.next().and_then(|value| value.parse().ok())
}
"--forever" => parsed.seconds = None,
"--once" => parsed.once = true,
"--no-alt" => parsed.alt_screen = false,
"-h" | "--help" | "help" => {
usage();
std::process::exit(0);
}
_ => {}
}
}
parsed
}
}
#[derive(Clone, Copy, Debug)]
struct Rect {
x: usize,
y: usize,
w: usize,
h: usize,
}
#[derive(Clone, Debug)]
struct Layout {
width: usize,
height: usize,
header: Rect,
hero: Rect,
lanes: Rect,
catalog: Rect,
footer: Rect,
}
impl Layout {
fn new(width: usize, height: usize, loader_count: usize) -> Self {
let header_h = 6;
let footer_h = 3;
let catalog_cols = (width / 11).max(1);
let catalog_rows = loader_count.div_ceil(catalog_cols).max(1);
let catalog_h = catalog_rows + 2;
let middle_h = height
.saturating_sub(header_h + catalog_h + footer_h)
.max(16);
let hero_w = ((width as f32) * 0.62).round() as usize;
let hero_w = hero_w.clamp(58, width.saturating_sub(32));
Self {
width,
height,
header: Rect {
x: 0,
y: 0,
w: width,
h: header_h,
},
hero: Rect {
x: 1,
y: header_h,
w: hero_w.saturating_sub(1),
h: middle_h,
},
lanes: Rect {
x: hero_w + 1,
y: header_h,
w: width.saturating_sub(hero_w + 2),
h: middle_h,
},
catalog: Rect {
x: 1,
y: header_h + middle_h,
w: width.saturating_sub(2),
h: catalog_h,
},
footer: Rect {
x: 0,
y: header_h + middle_h + catalog_h,
w: width,
h: footer_h,
},
}
}
fn hero_inner_width(&self) -> usize {
self.hero.w.saturating_sub(6).max(24)
}
fn hero_banner_height(&self) -> usize {
if self.hero.h >= 24 {
5
} else {
4
}
}
}
#[derive(Clone, Debug)]
struct Pane {
index: usize,
kind: LoaderKind,
op: &'static str,
noun: &'static str,
label: String,
unit: &'static str,
total: u64,
speed: usize,
offset: usize,
accent: Color,
effect_kind: EffectKind,
effect_frames: Vec<Frame>,
}
fn compose_lab(
layout: &Layout,
panes: &[Pane],
active: usize,
tick: usize,
focus_ticks: usize,
progress_seconds: u64,
manual_focus: bool,
) -> Frame {
let active_pane = &panes[active];
let mut screen =
Frame::with_background(layout.width, layout.height, Some(Color::rgb(3, 6, 11)));
draw_background(&mut screen, tick, active_pane.accent);
draw_header(
&mut screen,
layout.header,
active_pane,
active,
panes.len(),
tick,
manual_focus,
);
draw_hero(
&mut screen,
layout.hero,
active_pane,
tick,
focus_ticks,
progress_seconds,
);
draw_lanes(
&mut screen,
layout.lanes,
panes,
active,
tick,
progress_seconds,
);
draw_catalog(
&mut screen,
layout.catalog,
panes,
active,
tick,
progress_seconds,
);
draw_footer(
&mut screen,
layout.footer,
active,
panes.len(),
tick,
focus_ticks,
manual_focus,
active_pane.accent,
);
screen
}
fn draw_header(
screen: &mut Frame,
area: Rect,
active: &Pane,
active_index: usize,
total: usize,
tick: usize,
manual_focus: bool,
) {
fill_rect(screen, area, Some(Color::rgb(5, 10, 16)));
put_text(
screen,
2,
0,
"KNOTT DYNAMICS // LOADER COMMAND DECK",
Color::rgb(255, 178, 72),
Some(Color::rgb(5, 10, 16)),
true,
);
let mode = if manual_focus {
"MANUAL FOCUS"
} else {
"AUTO FOCUS"
};
let right = format!(
"{:02}/{:02} {} LoaderKind::{} {}",
active_index + 1,
total,
mode,
active.kind.name(),
active.op
);
put_text_right(
screen,
area.w.saturating_sub(2),
0,
&right,
active.accent.brighten(0.18),
Some(Color::rgb(5, 10, 16)),
true,
);
let line = "one hero loader | six live transfer lanes | full catalog strip | arrows/h-l change focus | a auto | q quit";
put_text(
screen,
2,
1,
line,
Color::rgb(126, 194, 255),
Some(Color::rgb(5, 10, 16)),
false,
);
for x in area.x..area.x + area.w {
let sparkle = (x + tick) % 17 == 0;
put_cell(
screen,
x,
area.y + area.h - 1,
if sparkle { '*' } else { '-' },
if sparkle {
active.accent.brighten(0.28)
} else {
Color::rgb(42, 64, 82)
},
Some(Color::rgb(5, 10, 16)),
sparkle,
!sparkle,
);
}
let mini = format!(
"active mock {}: {} unit:{} rig:{} speed:{}x tick:{}",
active.op.to_ascii_lowercase(),
active.label,
active.unit,
active.effect_kind.name(),
active.speed,
tick
);
put_text(
screen,
2,
3,
&mini,
Color::rgb(186, 206, 218),
Some(Color::rgb(5, 10, 16)),
false,
);
}
fn draw_hero(
screen: &mut Frame,
area: Rect,
pane: &Pane,
tick: usize,
focus_ticks: usize,
progress_seconds: u64,
) {
draw_panel(screen, area, "FOCUSED TRANSFER", pane.accent);
let inner = Rect {
x: area.x + 3,
y: area.y + 2,
w: area.w.saturating_sub(6).max(1),
h: area.h.saturating_sub(4).max(1),
};
let title = format!("{} // {} // {}", pane.kind.name(), pane.op, pane.noun);
put_text_clipped(
screen,
inner.x,
inner.y,
&title,
inner.w,
pane.accent.brighten(0.2),
Some(Color::rgb(7, 12, 18)),
true,
);
let stage_y = inner.y + 2;
let banner_h = pane
.effect_frames
.first()
.map(Frame::height)
.unwrap_or(3)
.min(5);
let banner = &pane.effect_frames[(tick + pane.offset) % pane.effect_frames.len().max(1)];
draw_frame(screen, inner.x, stage_y, banner, inner.w, banner_h);
let (progress, current, cycle) = transfer_progress(pane, tick, progress_seconds);
let metrics_y = stage_y + banner_h + 1;
let metrics = format!(
"{} / {}{} {:>3}% speed:{}x cycle:{} ticks",
current.min(pane.total),
pane.total,
pane.unit,
progress.percent(),
pane.speed,
cycle
);
put_text_clipped(
screen,
inner.x,
metrics_y,
&metrics,
inner.w,
Color::rgb(186, 206, 218),
Some(Color::rgb(7, 12, 18)),
false,
);
draw_progress_strip(
screen,
Rect {
x: inner.x,
y: metrics_y + 1,
w: inner.w,
h: 1,
},
progress.fraction(),
pane.accent,
Color::rgb(42, 54, 64),
);
let loader_y = metrics_y + 3;
let loader_h = inner.y + inner.h - loader_y;
if loader_h > 0 {
let loader = Loader::with_config(
pane.kind,
LoaderConfig::default()
.with_size(inner.w, loader_h)
.with_label(pane.label.clone())
.with_unit(pane.unit)
.with_fraction(true)
.with_gradient(
Gradient::new(
vec![
pane.accent,
pane.accent.brighten(0.38),
Color::rgb(90, 226, 255),
],
28,
),
GradientDirection::Horizontal,
),
);
let frame = loader.frame(tick + pane.offset, progress);
draw_frame(screen, inner.x, loader_y, &frame, inner.w, loader_h);
}
let focus_ratio = (tick % focus_ticks.max(1)) as f32 / focus_ticks.max(1) as f32;
draw_progress_strip(
screen,
Rect {
x: inner.x,
y: area.y + area.h - 2,
w: inner.w,
h: 1,
},
focus_ratio,
Color::rgb(255, 178, 72),
Color::rgb(42, 54, 64),
);
}
fn draw_lanes(
screen: &mut Frame,
area: Rect,
panes: &[Pane],
active: usize,
tick: usize,
progress_seconds: u64,
) {
draw_panel(screen, area, "LIVE LANES", Color::rgb(92, 204, 255));
let count = lane_count(area.h);
let lane_h = area.h.saturating_sub(2).max(1) / count.max(1);
for lane in 0..count {
let index = (active + lane + 1) % panes.len();
let pane = &panes[index];
let y = area.y + 2 + lane * lane_h;
let rect = Rect {
x: area.x + 2,
y,
w: area.w.saturating_sub(4).max(1),
h: lane_h.saturating_sub(1).max(1),
};
draw_lane(screen, rect, pane, tick, progress_seconds);
}
}
fn draw_lane(screen: &mut Frame, area: Rect, pane: &Pane, tick: usize, progress_seconds: u64) {
if area.h == 0 || area.w == 0 {
return;
}
let (progress, current, _) = transfer_progress(pane, tick, progress_seconds);
let title = format!("{:02} {} {}", pane.index + 1, pane.kind.name(), pane.op);
put_text_clipped(
screen,
area.x,
area.y,
&title,
area.w,
pane.accent,
Some(Color::rgb(7, 12, 18)),
true,
);
if area.h > 1 {
let metrics = format!(
"{} {} / {}{} {}x",
pane.label,
current.min(pane.total),
pane.total,
pane.unit,
pane.speed
);
put_text_clipped(
screen,
area.x,
area.y + 1,
&metrics,
area.w,
Color::rgb(180, 198, 210),
Some(Color::rgb(7, 12, 18)),
false,
);
}
if area.h > 2 {
let loader_h = area.h - 2;
let loader = Loader::with_config(
pane.kind,
LoaderConfig::default()
.with_size(area.w, loader_h)
.with_label(pane.label.clone())
.with_unit(pane.unit)
.with_percent(true)
.with_fraction(false)
.with_gradient(
Gradient::new(vec![pane.accent, Color::rgb(90, 226, 255)], 18),
GradientDirection::Horizontal,
),
);
let frame = loader.frame(tick + pane.offset, progress);
draw_frame(screen, area.x, area.y + 2, &frame, area.w, loader_h);
}
}
fn draw_catalog(
screen: &mut Frame,
area: Rect,
panes: &[Pane],
active: usize,
tick: usize,
progress_seconds: u64,
) {
draw_panel(
screen,
area,
"ALL LOADERS - VISIBLE CATALOG",
Color::rgb(255, 178, 72),
);
let cell_w = 11usize;
let cols = (area.w.saturating_sub(4) / cell_w).max(1);
for (index, pane) in panes.iter().enumerate() {
let col = index % cols;
let row = index / cols;
let x = area.x + 2 + col * cell_w;
let y = area.y + 2 + row;
if y >= area.y + area.h.saturating_sub(1) {
break;
}
let (progress, _, _) = transfer_progress(pane, tick, progress_seconds);
let marker = match (progress.percent() / 12).min(8) {
0 => '.',
1 | 2 => ':',
3 | 4 => '=',
5 | 6 => '#',
_ => '*',
};
let mut text = format!("{}{}", marker, pane.kind.name());
text.truncate(cell_w.saturating_sub(1));
let in_lanes = (1..=lane_count(999)).any(|offset| (active + offset) % panes.len() == index);
let fg = if index == active {
pane.accent.brighten(0.25)
} else if in_lanes {
Color::rgb(126, 194, 255)
} else {
Color::rgb(122, 140, 154)
};
put_text_clipped(
screen,
x,
y,
&text,
cell_w.saturating_sub(1),
fg,
Some(Color::rgb(7, 12, 18)),
index == active,
);
}
}
fn draw_footer(
screen: &mut Frame,
area: Rect,
active: usize,
total: usize,
tick: usize,
focus_ticks: usize,
manual_focus: bool,
accent: Color,
) {
fill_rect(screen, area, Some(Color::rgb(5, 10, 16)));
for x in area.x..area.x + area.w {
put_cell(
screen,
x,
area.y,
'-',
Color::rgb(46, 70, 88),
Some(Color::rgb(5, 10, 16)),
false,
true,
);
}
put_text(
screen,
area.x + 2,
area.y + 1,
"<<<",
accent,
Some(Color::rgb(5, 10, 16)),
true,
);
put_text_right(
screen,
area.x + area.w.saturating_sub(3),
area.y + 1,
">>>",
accent,
Some(Color::rgb(5, 10, 16)),
true,
);
let mode = if manual_focus { "MANUAL" } else { "AUTO" };
let text = format!(
"focus {:02}/{:02} mode:{} arrows/h-l next loader a auto q quit",
active + 1,
total,
mode
);
put_text(
screen,
area.x + 8,
area.y + 1,
&text,
Color::rgb(186, 206, 218),
Some(Color::rgb(5, 10, 16)),
false,
);
let ratio = (tick % focus_ticks.max(1)) as f32 / focus_ticks.max(1) as f32;
draw_progress_strip(
screen,
Rect {
x: area.x + 8,
y: area.y + 2,
w: area.w.saturating_sub(16),
h: 1,
},
ratio,
accent,
Color::rgb(42, 54, 64),
);
}
fn lane_count(height: usize) -> usize {
if height >= 34 {
6
} else if height >= 25 {
5
} else if height >= 17 {
4
} else {
3
}
}
fn transfer_progress(
pane: &Pane,
tick: usize,
progress_seconds: u64,
) -> (LoaderProgress, u64, usize) {
let cycle = ((progress_seconds as usize * 10) / pane.speed.max(1)).max(18);
let progress_tick = (tick + pane.offset) % cycle;
let fraction = progress_tick as f32 / cycle.saturating_sub(1).max(1) as f32;
let current = (pane.total as f32 * fraction).round() as u64;
(
LoaderProgress::from_counts(current.min(pane.total), pane.total),
current,
cycle,
)
}
fn build_panes(effect_width: usize, effect_height: usize, focus_ticks: usize) -> Vec<Pane> {
let ops = [
("DOWNLOAD", "tendon-atlas", "MB"),
("UPLOAD", "field-manifest", "MB"),
("SYNC", "sensor-mesh", "pkt"),
("VERIFY", "leverage-map", "chk"),
("STREAM", "gait-vectors", "vec"),
("FORGE", "actuator-curve", "N"),
("DECRYPT", "intent-bus", "blk"),
("MIRROR", "joint-state", "msg"),
("PACK", "motion-plan", "ops"),
("RELAY", "balance-loop", "hz"),
("CALIBRATE", "cable-stack", "mm"),
("ARCHIVE", "field-log", "MB"),
];
let effects = [
EffectKind::Matrix,
EffectKind::Burn,
EffectKind::Decrypt,
EffectKind::Thunderstorm,
EffectKind::LaserEtch,
EffectKind::Blackhole,
EffectKind::Rings,
EffectKind::Swarm,
EffectKind::Fireworks,
EffectKind::Slice,
EffectKind::Waves,
EffectKind::Wipe,
];
let palette = [
Color::rgb(74, 255, 170),
Color::rgb(255, 118, 54),
Color::rgb(92, 204, 255),
Color::rgb(255, 216, 92),
Color::rgb(172, 130, 255),
Color::rgb(255, 112, 218),
Color::rgb(112, 236, 255),
Color::rgb(255, 178, 72),
];
let speeds = [1, 2, 3, 4, 5, 7, 9, 11];
LoaderKind::all()
.iter()
.enumerate()
.map(|(index, kind)| {
let (op, noun, unit) = ops[index % ops.len()];
let effect_kind = effects[(index * 5 + 3) % effects.len()];
let accent = palette[index % palette.len()];
let label = format!("{} {}", op.to_ascii_lowercase(), noun);
let effect_text = format!("{} {}\n{}", op, kind.name(), noun).to_ascii_uppercase();
let effect = Effect::with_config(
effect_kind,
effect_text,
EffectConfig::default()
.with_duration(focus_ticks)
.with_seed(991 + index as u64 * 37)
.with_canvas_size(effect_width, effect_height.max(1))
.with_gradient(
Gradient::new(
vec![accent, accent.brighten(0.32), Color::rgb(230, 244, 250)],
20,
),
GradientDirection::Diagonal,
),
);
Pane {
index,
kind: *kind,
op,
noun,
label,
unit,
total: 128 + ((index as u64 * 97) % 2048),
speed: speeds[index % speeds.len()],
offset: index * 17,
accent,
effect_kind,
effect_frames: effect.frames(),
}
})
.collect()
}
fn draw_background(screen: &mut Frame, tick: usize, accent: Color) {
let width = screen.width();
let height = screen.height();
for y in 0..height {
for x in 0..width {
let n = noise(0x10ad, x as u64, y as u64, (tick / 3) as u64);
if n > 0.982 {
let ch = if n > 0.991 { '1' } else { '0' };
put_cell(
screen,
x,
y,
ch,
accent.dim(0.42),
Some(Color::rgb(3, 6, 11)),
false,
true,
);
} else if (x + y + tick / 2) % 53 == 0 {
put_cell(
screen,
x,
y,
'.',
Color::rgb(34, 48, 60),
Some(Color::rgb(3, 6, 11)),
false,
true,
);
}
}
}
}
fn draw_panel(screen: &mut Frame, area: Rect, title: &str, accent: Color) {
fill_rect(screen, area, Some(Color::rgb(7, 12, 18)));
if area.w < 2 || area.h < 2 {
return;
}
let border = accent.dim(0.52);
for x in area.x..area.x + area.w {
put_cell(
screen,
x,
area.y,
'-',
border,
Some(Color::rgb(7, 12, 18)),
false,
true,
);
put_cell(
screen,
x,
area.y + area.h - 1,
'-',
border,
Some(Color::rgb(7, 12, 18)),
false,
true,
);
}
for y in area.y..area.y + area.h {
put_cell(
screen,
area.x,
y,
'|',
border,
Some(Color::rgb(7, 12, 18)),
false,
true,
);
put_cell(
screen,
area.x + area.w - 1,
y,
'|',
border,
Some(Color::rgb(7, 12, 18)),
false,
true,
);
}
put_cell(
screen,
area.x,
area.y,
'+',
accent,
Some(Color::rgb(7, 12, 18)),
true,
false,
);
put_cell(
screen,
area.x + area.w - 1,
area.y,
'+',
accent,
Some(Color::rgb(7, 12, 18)),
true,
false,
);
put_cell(
screen,
area.x,
area.y + area.h - 1,
'+',
accent,
Some(Color::rgb(7, 12, 18)),
true,
false,
);
put_cell(
screen,
area.x + area.w - 1,
area.y + area.h - 1,
'+',
accent,
Some(Color::rgb(7, 12, 18)),
true,
false,
);
put_text_clipped(
screen,
area.x + 2,
area.y,
title,
area.w.saturating_sub(4),
accent.brighten(0.12),
Some(Color::rgb(7, 12, 18)),
true,
);
}
fn draw_progress_strip(screen: &mut Frame, area: Rect, ratio: f32, fill: Color, empty: Color) {
let active = (ratio.clamp(0.0, 1.0) * area.w as f32).round() as usize;
for x in 0..area.w {
let done = x < active;
put_cell(
screen,
area.x + x,
area.y,
if done { '#' } else { '-' },
if done { fill } else { empty },
Some(Color::rgb(7, 12, 18)),
done,
!done,
);
}
}
fn fill_rect(screen: &mut Frame, area: Rect, bg: Option<Color>) {
for y in area.y..(area.y + area.h).min(screen.height()) {
for x in area.x..(area.x + area.w).min(screen.width()) {
let mut cell = Cell::new(' ');
cell.colors.bg = bg;
screen.set(x, y, cell);
}
}
}
fn draw_frame(screen: &mut Frame, x: usize, y: usize, frame: &Frame, max_w: usize, max_h: usize) {
for fy in 0..frame.height().min(max_h) {
for fx in 0..frame.width().min(max_w) {
if let Some(cell) = frame.cell(fx, fy) {
if cell.ch != ' ' || cell.has_style() {
screen.set(x + fx, y + fy, cell.clone());
}
}
}
}
}
fn put_text(
screen: &mut Frame,
x: usize,
y: usize,
text: &str,
fg: Color,
bg: Option<Color>,
bold: bool,
) {
put_text_clipped(screen, x, y, text, usize::MAX, fg, bg, bold);
}
fn put_text_clipped(
screen: &mut Frame,
x: usize,
y: usize,
text: &str,
max_width: usize,
fg: Color,
bg: Option<Color>,
bold: bool,
) {
if y >= screen.height() || max_width == 0 {
return;
}
for (offset, ch) in text.chars().take(max_width).enumerate() {
let px = x + offset;
if px >= screen.width() {
break;
}
put_cell(screen, px, y, ch, fg, bg, bold, false);
}
}
fn put_text_right(
screen: &mut Frame,
right_x: usize,
y: usize,
text: &str,
fg: Color,
bg: Option<Color>,
bold: bool,
) {
let x = right_x.saturating_sub(text.chars().count());
put_text(screen, x, y, text, fg, bg, bold);
}
fn put_cell(
screen: &mut Frame,
x: usize,
y: usize,
ch: char,
fg: Color,
bg: Option<Color>,
bold: bool,
dim: bool,
) {
if x >= screen.width() || y >= screen.height() {
return;
}
let mut cell = Cell::new(ch);
cell.colors.fg = Some(fg);
cell.colors.bg = bg;
cell.bold = bold;
cell.dim = dim;
screen.set(x, y, cell);
}
fn noise(seed: u64, a: u64, b: u64, c: u64) -> f32 {
let mut x = seed
^ a.wrapping_mul(0x9e37_79b9_7f4a_7c15)
^ b.wrapping_mul(0xbf58_476d_1ce4_e5b9)
^ c.wrapping_mul(0x94d0_49bb_1331_11eb);
x ^= x >> 30;
x = x.wrapping_mul(0xbf58_476d_1ce4_e5b9);
x ^= x >> 27;
x = x.wrapping_mul(0x94d0_49bb_1331_11eb);
let value = (x ^ (x >> 31)) >> 40;
value as f32 / ((1u64 << 24) - 1) as f32
}
fn terminal_size() -> (usize, usize) {
let env_size = env::var("COLUMNS")
.ok()
.and_then(|columns| columns.parse::<usize>().ok())
.zip(
env::var("LINES")
.ok()
.and_then(|lines| lines.parse::<usize>().ok()),
);
if let Some((columns, lines)) = env_size {
return (columns, lines);
}
let output = Command::new("stty").arg("size").output();
if let Ok(output) = output {
if output.status.success() {
if let Ok(text) = String::from_utf8(output.stdout) {
let mut parts = text.split_whitespace();
if let (Some(lines), Some(columns)) = (parts.next(), parts.next()) {
if let (Ok(lines), Ok(columns)) =
(lines.parse::<usize>(), columns.parse::<usize>())
{
return (columns, lines);
}
}
}
}
}
(132, 44)
}
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
enum Input {
Next,
Prev,
Auto,
Quit,
}
struct TerminalGuard {
alt_screen: bool,
stty_state: Option<String>,
}
impl TerminalGuard {
fn enter(stdout: &mut io::Stdout, alt_screen: bool) -> Self {
if alt_screen {
write!(stdout, "\x1b[?1049h\x1b[?25l\x1b[2J\x1b[H").unwrap();
} else {
write!(stdout, "\x1b[?25l\x1b[2J\x1b[H").unwrap();
}
stdout.flush().unwrap();
let stty_state = Command::new("stty")
.arg("-g")
.output()
.ok()
.filter(|output| output.status.success())
.and_then(|output| String::from_utf8(output.stdout).ok())
.map(|state| state.trim().to_string())
.filter(|state| !state.is_empty());
if stty_state.is_some() {
let _ = Command::new("stty")
.args(["raw", "-echo", "min", "0", "time", "0"])
.status();
}
Self {
alt_screen,
stty_state,
}
}
fn poll_input(&mut self) -> Option<Input> {
self.stty_state.as_ref()?;
let mut buf = [0u8; 16];
let count = io::stdin().read(&mut buf).ok()?;
if count == 0 {
return None;
}
let bytes = &buf[..count];
for index in 0..bytes.len() {
match bytes[index] {
b'q' | b'Q' => return Some(Input::Quit),
b'a' | b'A' => return Some(Input::Auto),
b'l' | b'L' | b'n' | b'N' | b' ' => return Some(Input::Next),
b'h' | b'H' | b'p' | b'P' => return Some(Input::Prev),
0x1b if index + 2 < bytes.len() && bytes[index + 1] == b'[' => {
if bytes[index + 2] == b'C' {
return Some(Input::Next);
}
if bytes[index + 2] == b'D' {
return Some(Input::Prev);
}
}
_ => {}
}
}
None
}
}
impl Drop for TerminalGuard {
fn drop(&mut self) {
if let Some(state) = &self.stty_state {
let _ = Command::new("stty").arg(state).status();
}
let mut stdout = io::stdout();
if self.alt_screen {
write!(stdout, "\x1b[0m\x1b[?25h\x1b[?1049l").unwrap();
} else {
write!(stdout, "\x1b[0m\x1b[?25h\n").unwrap();
}
stdout.flush().unwrap();
}
}
fn usage() {
println!("Usage:");
println!(" ./loaders.sh [--seconds N] [--fps N] [--focus-seconds N] [--focus N]");
println!();
println!("Controls:");
println!(" Right arrow / l / n / space: next focused loader");
println!(" Left arrow / h / p: previous focused loader");
println!(" a: resume auto focus");
println!(" q: quit");
}