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Rewrite mapsize in Rust and remove the Go implementation #1

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andydixon merged 13 commits from rust-port into master 2026-10-08 19:33:31 +02:00
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# mapsize — Rust port
A port of the Go implementation (repo root) to Rust, with the same CLI, TUI,
keys, themes and snapshot format. `.msz` snapshots are byte-compatible in
both directions. The code is Linux/Unix only; the Windows code paths were
not ported.
```
cd rust
cargo build --release # target/release/mapsize
cargo test --release # 69 tests (ported from the Go suites, fuzz tests excepted)
```
Module layout mirrors `internal/`: `inventory`, `scan`, `platform`, `treemap`,
`filter`, `snapshot` (+ `compare`), `duplicate`, `export`, `config`,
`textutil`, `tui`, `app`. The tree is shared as `Arc<RwLock<Tree>>` with the
same single-writer invariants as ARCHITECTURE.md; `cancel::Cancel` replaces
`context.Context`; crossterm replaces Bubble Tea as the event loop (the
canvas renderer is ported as-is, plus line-diffed frame output).
## Known differences from Go
* `--log`/`--log-level` are accepted but there is no debug log yet.
* A scanner thread panic restores the terminal and aborts the process instead
of returning an "internal error" message.
* The colour profile is detected from `NO_COLOR`/`TERM`/`COLORTERM` only (no
terminal query); `--color` still overrides.
* JSON export does not HTML-escape `<>&`; `started` is written in UTC.
* The filter lexer no longer hangs on queries containing bytes Go treats as
white space but never skips (e.g. `voilà`, whose UTF-8 contains 0xA0).
* Huge sizes saturate rather than wrap in filters and snapshot comparison.
## Benchmarks
Machine: Intel Core i7-7700 (4C/8T), 32 GiB, ext4 on md RAID over 7200 rpm
HDDs. Go 1.27.1, Rust 1.91.1 (`lto`, `codegen-units = 1`). The host was
shared and heavily loaded during the runs (load average 30–50 on 8 threads),
so absolute times are inflated 2–4× compared with PERFORMANCE.md. To keep the
comparison fair, Go and Rust runs were interleaved and the tables report
best-of (micro) or median and best (end-to-end). Re-run on an idle machine
before quoting absolute numbers:
```
go test -c -o /tmp/tui.test ./internal/tui && go test -c -o /tmp/treemap.test ./internal/treemap
(cd rust && cargo build --release --example bench)
rust/bench/micro.py /tmp/tui.test /tmp/treemap.test rust/target/release/examples/bench 5
rust/bench/compare.py bin/mapsize rust/target/release/mapsize ~/go/pkg/mod 7
```
### In-process (Go `go test -bench` suite vs `examples/bench.rs`)
The tree is 1,008,201 synthetic nodes, rendered at 200×60.
| benchmark | Go | Rust | speed-up |
|---|---:|---:|---:|
| treemap/Squarify(300) | 299.3 µs | 22.2 µs | 13.48× |
| treemap/Neighbour(300) | 5.0 µs | 2.8 µs | 1.76× |
| tui/BigColdFrame | 86.88 ms | 29.32 ms | 2.96× |
| tui/BigResize | 7.15 ms | 4.76 ms | 1.50× |
| tui/BigFlatDirCold | 86.33 ms | 22.90 ms | 3.77× |
| tui/BigNavigate | 4.85 ms | 4.07 ms | 1.19× |
| tui/BigFilter/size > 1MB | 78.62 ms | 59.51 ms | 1.32× |
| tui/BigFilter/*.dat AND size > 500k | 302.03 ms | 154.90 ms | 1.95× |
| tui/BigFilter/path contains sub3 | 337.79 ms | 136.85 ms | 2.47× |
### End to end (`~/go/pkg/mod`: 388k files + 65k dirs, warm cache)
| scenario | Go median | Rust median | Go best | Rust best | Go RSS | Rust RSS | speed-up |
|---|---:|---:|---:|---:|---:|---:|---:|
| scan, 1 workers | 4.68 s | 5.51 s | 4.34 s | 4.86 s | 114 MB | 75 MB | 0.85× |
| scan, 8 workers | 2.03 s | 2.03 s | 1.61 s | 1.42 s | 113 MB | 78 MB | 1.00× |
| scan, 32 workers | 3.09 s | 2.59 s | 2.85 s | 2.07 s | 116 MB | 89 MB | 1.19× |
| scan + save snapshot | 4.69 s | 3.60 s | 4.02 s | 3.29 s | 117 MB | 80 MB | 1.30× |
| load own snapshot | 1.20 s | 0.71 s | 0.71 s | 0.48 s | 85 MB | 78 MB | 1.69× |
| load Go snapshot | 1.03 s | 1.14 s | 0.84 s | 0.48 s | 85 MB | 78 MB | 0.90× |
| scan + JSON export | 6.10 s | 4.74 s | 5.44 s | 4.16 s | 152 MB | 79 MB | 1.29× |
| scan + top 50 largest files | 4.49 s | 4.31 s | 3.62 s | 3.65 s | 117 MB | 79 MB | 1.04× |
Reading the numbers:
* **Scanning** is syscall-bound (`statx`/`getdents` were about 60% of Go's
profile), so wall time is roughly at parity. Rust edges ahead at high
worker counts. The single-worker case is about 15% slower, but that run was
the noisiest of the set.
* **Memory**: peak RSS is 30–48% lower (78 MB vs 113 MB while scanning
458k nodes). The JSON export streams without Go's per-node allocations
(79 MB vs 152 MB).
* **Snapshots**: loading is about 1.7× faster on the median. The two binaries
load each other's files.
* **UI**: cold frames are 3–3.8× faster, and squarified layout is about 13×
faster. Navigation and resize gain less (1.2–1.5×) because they mostly
reuse cached layout.
* **Filters**: 1.3–2.5× faster. This required caching lower-cased directory
paths in a `Vec` with reused buffers, and a `*.ext` fast path in the
`filepath.Match` port.
rust/bench/compare.py
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#!/usr/bin/env python3
"""Times the Go and Rust mapsize binaries on the same command lines.
rust/bench/compare.py GO_BIN RUST_BIN PATH [RUNS]
Runs are interleaved (go, rust, go, rust, …) after one untimed warm-up each,
so both see the same page-cache state. Reports median and best wall time and
median peak RSS per scenario as a Markdown table. Linux only (/usr/bin/time).
"""
import os, statistics, subprocess, sys, tempfile
go, rust, path = sys.argv[1:4]
runs = int(sys.argv[4]) if len(sys.argv) > 4 else 7
tmp = tempfile.mkdtemp(prefix="mapsize-bench-")
snap = {"go": os.path.join(tmp, "go.msz"), "rust": os.path.join(tmp, "rust.msz")}
bins = {"go": go, "rust": rust}
def timed(argv):
r = subprocess.run(["/usr/bin/time", "-f", "%e %M"] + argv, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE, text=True)
if r.returncode != 0:
sys.exit(f"failed: {' '.join(argv)}\n{r.stderr}")
secs, kb = r.stderr.strip().splitlines()[-1].split()
return float(secs), int(kb) / 1024
scenarios = [(f"scan, {w} workers", lambda b, w=w: [bins[b], "--no-ui", "--workers", str(w), path]) for w in (1, 8, 32)]
scenarios += [
("scan + save snapshot", lambda b: [bins[b], "--no-ui", "--save", snap[b], path]),
("load own snapshot", lambda b: [bins[b], "--no-ui", snap[b]]),
("load Go snapshot", lambda b: [bins[b], "--no-ui", snap["go"]]),
("scan + JSON export", lambda b: [bins[b], "--json", path]),
("scan + top 50 largest files", lambda b: [bins[b], "--largest-files", "50", path]),
]
print(f"Path: `{path}`, {runs} interleaved runs per binary, warm cache\n")
print("| scenario | Go median | Rust median | Go best | Rust best | Go RSS | Rust RSS | speed-up |")
print("|---|---:|---:|---:|---:|---:|---:|---:|")
for name, mk in scenarios:
argv = {k: mk(k) for k in bins}
res = {k: [] for k in bins}
for k in bins:
timed(argv[k]) # warm-up (also creates the snapshot files)
for _ in range(runs):
for k in bins:
res[k].append(timed(argv[k]))
med = {k: statistics.median(t for t, _ in v) for k, v in res.items()}
best = {k: min(t for t, _ in v) for k, v in res.items()}
rss = {k: statistics.median(m for _, m in v) for k, v in res.items()}
print(f"| {name} | {med['go']:.2f} s | {med['rust']:.2f} s | {best['go']:.2f} s | {best['rust']:.2f} s "
f"| {rss['go']:.0f} MB | {rss['rust']:.0f} MB | {med['go'] / med['rust']:.2f}× |", flush=True)
rust/bench/micro.py
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#!/usr/bin/env python3
"""Runs the Go `go test -bench` suite and the Rust bench example
interleaved for several rounds and prints the best time per op of each.
rust/bench/micro.py GO_TUI_TEST GO_TREEMAP_TEST RUST_BENCH [ROUNDS]
Build the inputs with `go test -c ./internal/tui`, `go test -c
./internal/treemap` and `cargo build --release --example bench`. The Go tui
test binary must run from internal/tui, so run this from the repo root.
"""
import re, subprocess, sys
go_tui, go_tm, rust = sys.argv[1:4]
rounds = int(sys.argv[4]) if len(sys.argv) > 4 else 5
names = { # rust name -> go name
"treemap/Squarify(300)": "Squarify", "treemap/Neighbour(300)": "Neighbour",
"tui/BigColdFrame": "BigColdFrame", "tui/BigResize": "BigResize",
"tui/BigFlatDirCold": "BigFlatDirCold", "tui/BigNavigate": "BigNavigate",
"tui/BigFilter/size > 1MB": "BigFilter/size_>_1MB",
"tui/BigFilter/*.dat AND size > 500k": "BigFilter/*.dat_AND_size_>_500k",
"tui/BigFilter/path contains sub3": "BigFilter/path_contains_sub3",
}
unit = {"ns": 1e-9, "µs": 1e-6, "ms": 1e-3, "s": 1}
go_best, rust_best = {}, {}
def keep(d, k, v):
d[k] = min(d.get(k, v), v)
for _ in range(rounds):
for exe, cwd in ((go_tui, "internal/tui"), (go_tm, "internal/treemap")):
out = subprocess.run([exe, "-test.run=NONE", "-test.bench=.", "-test.benchtime=1s"], cwd=cwd, capture_output=True, text=True).stdout
for m in re.finditer(r"^Benchmark(\S+?)-\d+\s+\d+\s+([\d.]+) ns/op", out, re.M):
keep(go_best, m[1], float(m[2]) * 1e-9)
out = subprocess.run([rust], capture_output=True, text=True).stdout
for m in re.finditer(r"^(\S.*?)\s+\d+ ops\s+([\d.]+)(ns|µs|ms|s)/op", out, re.M):
keep(rust_best, m[1].strip(), float(m[2]) * unit[m[3]])
def fmt(s):
return f"{s * 1e6:.1f} µs" if s < 1e-3 else f"{s * 1e3:.2f} ms"
print(f"Best of {rounds} interleaved rounds\n")
print("| benchmark | Go | Rust | speed-up |\n|---|---:|---:|---:|")
for r, g in names.items():
if r in rust_best and g in go_best:
print(f"| {r} | {fmt(go_best[g])} | {fmt(rust_best[r])} | {go_best[g] / rust_best[r]:.2f}× |")
rust/examples/bench.rs
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//! In-process benchmarks mirroring the Go `go test -bench` suite
//! (internal/tui/bench_test.go, internal/treemap/treemap_test.go):
//!
//! cargo run --release --example bench
//!
//! Each case runs for ~2 s after a warm-up and reports the mean time per op.
use mapsize::treemap::{self, Direction, Item, Rect};
use mapsize::tui::bench::{big_tree, BenchModel};
use std::hint::black_box;
use std::sync::{Arc, RwLock};
use std::time::{Duration, Instant};
fn bench<R>(name: &str, mut f: impl FnMut(u64) -> R) {
black_box(f(0));
let budget = Duration::from_secs(2);
let start = Instant::now();
let mut n = 0u64;
while start.elapsed() < budget {
black_box(f(n));
n += 1;
}
let per = start.elapsed() / n as u32;
println!("{name:<40} {n:>8} ops {per:>12.2?}/op");
}
fn main() {
let items: Vec<Item> = (0..300).map(|i| Item { id: i, size: (1 + i * i) as f64 }).collect();
let bounds = Rect { x: 0, y: 0, w: 200, h: 60 };
bench("treemap/Squarify(300)", |_| {
black_box(treemap::squarify(black_box(&items), bounds));
});
let blocks = treemap::squarify(&items, bounds);
bench("treemap/Neighbour(300)", |_| {
black_box(treemap::neighbour(black_box(&blocks), 150, Direction::Right));
});
let t0 = Instant::now();
let tree = Arc::new(RwLock::new(big_tree()));
println!("big tree: {} nodes built in {:.2?}", tree.read().unwrap().len(), t0.elapsed());
let mut m = BenchModel::new(tree.clone(), 200, 60);
bench("tui/BigColdFrame", |_| m.cold_frame());
let mut m = BenchModel::new(tree.clone(), 200, 60);
m.cold_frame();
bench("tui/BigResize", |i| m.resize(150 + (i % 100) as u16, 40 + (i % 30) as u16));
let mut m = BenchModel::new(tree.clone(), 200, 60);
m.zoom_to_child_named(b"flat");
bench("tui/BigFlatDirCold", |_| m.cold_frame());
let mut m = BenchModel::new(tree.clone(), 200, 60);
m.cold_frame();
let keys = ["right", "down", "left", "up"];
bench("tui/BigNavigate", |i| m.key(keys[i as usize % 4]));
for q in ["size > 1MB", "*.dat AND size > 500k", "path contains sub3"] {
let mut m = BenchModel::new(tree.clone(), 200, 60);
bench(&format!("tui/BigFilter/{q}"), |_| m.apply_filter(q));
}
}
rust/src/app.rs
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//! Wires the command-line modes together: interactive TUI, non-interactive
//! reports, snapshots and comparisons. TUI and CLI share the same scanner
//! and inventory.
use crate::cancel::Cancel;
use crate::config::Settings;
use crate::inventory::{Kind, SizeMode, Tree, FLAG_HARDLINK_DUP};
use crate::scan::{self, Scanner};
use crate::{duplicate, export, snapshot, textutil, tui, Error};
use std::io::{IsTerminal, Write};
use std::path::Path;
use std::sync::{Arc, RwLock};
use std::time::{Duration, Instant};
/// The fully-resolved command line.
pub struct Config {
pub paths: Vec<String>,
pub scan_opts: scan::Options,
pub no_ui: bool,
pub json: bool,
pub csv: bool,
pub depth: i64,
pub top: usize,
pub largest_files: usize,
pub save: String,
pub load: String,
pub compare: Option<(String, String)>,
pub duplicates: bool,
pub read_only: bool,
pub theme: String,
pub size_mode: SizeMode,
pub mouse: bool,
pub color: String,
pub settings: Settings,
}
impl Config {
pub fn new(settings: Settings) -> Config {
Config {
paths: Vec::new(), scan_opts: Default::default(), no_ui: false, json: false, csv: false, depth: -1,
top: 0, largest_files: 0, save: String::new(), load: String::new(), compare: None, duplicates: false,
read_only: false, theme: settings.theme.clone(), size_mode: SizeMode::Allocated, mouse: settings.mouse,
color: "auto".into(), settings,
}
}
/// Whether any non-interactive output was requested.
pub fn report(&self) -> bool {
self.no_ui || self.json || self.csv || self.top > 0 || self.largest_files > 0 || self.duplicates
}
}
/// Executes the configured mode.
pub fn run(cfg: Config) -> Result<(), Error> {
if cfg.compare.is_some() {
return run_compare(cfg);
}
if !cfg.report() {
return run_tui(cfg);
}
run_report(cfg)
}
/// Begins a scan (or loads a snapshot). The scanner is None when the tree
/// came from a snapshot.
fn start_source(cancel: Cancel, load: &str, paths: &[String], opts: &scan::Options) -> Result<(Option<Scanner>, Arc<RwLock<Tree>>), Error> {
if !load.is_empty() {
return Ok((None, Arc::new(RwLock::new(snapshot::load_file(Path::new(load))?))));
}
let root = paths.first().map_or(".", |s| s.as_str());
let s = scan::start(root.as_bytes(), opts.clone(), cancel)?;
let t = s.tree.clone();
Ok((Some(s), t))
}
/// Cancels on SIGINT for report mode, like Go's signal.NotifyContext.
fn interrupt_cancel() -> Cancel {
static CANCEL: std::sync::OnceLock<Cancel> = std::sync::OnceLock::new();
extern "C" fn on_sigint(_: libc::c_int) {
if let Some(c) = CANCEL.get() {
// Only an atomic store happens here; the channel drop is deferred.
c.cancel_flag_only();
}
}
let c = CANCEL.get_or_init(Cancel::new).clone();
unsafe { libc::signal(libc::SIGINT, on_sigint as libc::sighandler_t) };
c
}
fn run_report(cfg: Config) -> Result<(), Error> {
let cancel = interrupt_cancel();
let (s, tree) = start_source(cancel.clone(), &cfg.load, &cfg.paths, &cfg.scan_opts)?;
if let Some(s) = &s {
wait_with_progress(s, &cancel);
}
let mut out = std::io::stdout().lock();
if cfg.duplicates && !cfg.json && !cfg.csv {
// find takes its own read lock; never nest read locks.
run_duplicates(&mut out, &cancel, &tree)?;
}
let t = tree.read().unwrap();
if s.is_some() && !cfg.save.is_empty() {
snapshot::save_file(Path::new(&cfg.save), &t)?;
eprintln!("Saved snapshot {}", cfg.save);
}
if cfg.json {
return Ok(export::json(&mut out, &t, t.root(), cfg.depth)?);
}
if cfg.csv {
return Ok(export::csv(&mut out, &t, t.root(), cfg.depth)?);
}
if cfg.top > 0 {
let mut ids = t.sorted_children(t.root(), cfg.size_mode);
ids.truncate(cfg.top);
export::table(&mut out, &t, &ids, cfg.size_mode)?;
writeln!(out)?;
}
if cfg.largest_files > 0 {
let m = cfg.size_mode;
let ids = t.top(t.root(), cfg.largest_files, |n| n.kind == Kind::File && n.flags & FLAG_HARDLINK_DUP == 0, |n| n.own(m));
export::table(&mut out, &t, &ids, m)?;
writeln!(out)?;
}
export::summary(&mut out, &t)?;
Ok(())
}
/// Blocks until the scan finishes, printing a progress line to stderr if it
/// is a terminal.
fn wait_with_progress(s: &Scanner, cancel: &Cancel) {
let tty = std::io::stderr().is_terminal();
let start = Instant::now();
let mut forwarded = false;
loop {
match s.done().recv_timeout(Duration::from_millis(250)) {
Err(crossbeam_channel::RecvTimeoutError::Timeout) => {}
_ => {
if tty {
eprint!("\r\x1b[K");
}
return;
}
}
if cancel.is_cancelled() && !forwarded {
cancel.cancel(); // complete the signal-handler cancellation
forwarded = true;
}
if tty {
let p = s.progress();
let el = start.elapsed();
eprint!(
"\r\x1b[Kscanning… {} entries {}/s queue {} {}",
textutil::count(p.entries),
textutil::count((p.entries as f64 / el.as_secs_f64()) as i64),
p.pending,
textutil::duration(el)
);
}
}
}
fn run_tui(cfg: Config) -> Result<(), Error> {
let (load, paths, opts) = (cfg.load.clone(), cfg.paths.clone(), cfg.scan_opts.clone());
tui::run(tui::Options {
read_only: cfg.read_only, theme: cfg.theme, size_mode: cfg.size_mode, mouse: cfg.mouse, color: cfg.color,
save: cfg.save, settings: cfg.settings, diff: None,
start: Arc::new(move |c| start_source(c, &load, &paths, &opts)),
})
}
fn run_compare(cfg: Config) -> Result<(), Error> {
let (a, b) = cfg.compare.clone().unwrap();
let old = snapshot::load_file(Path::new(&a)).map_err(|e| format!("{a}: {e}"))?;
let nw = snapshot::load_file(Path::new(&b)).map_err(|e| format!("{b}: {e}"))?;
let d = snapshot::compare(old, &nw);
if !cfg.report() {
let tree = Arc::new(RwLock::new(nw));
return tui::run(tui::Options {
read_only: true, theme: cfg.theme, size_mode: cfg.size_mode, mouse: cfg.mouse, color: cfg.color,
save: String::new(), settings: cfg.settings, diff: Some(d),
start: Arc::new(move |_| Ok((None, tree.clone()))),
});
}
let k = if cfg.top > 0 { cfg.top } else { 30 };
let m = cfg.size_mode;
let mut out = std::io::stdout().lock();
let (ro, rn) = (d.old.node(0), nw.node(0));
writeln!(out, "{} → {}", textutil::sanitize(&d.old.stats.from_snapshot), textutil::sanitize(&nw.stats.from_snapshot))?;
writeln!(out, "Total {} → {} ({})\n", textutil::size(ro.total(m)), textutil::size(rn.total(m)), textutil::signed_size(rn.total(m) - ro.total(m)))?;
for c in d.changes(&nw, k, m) {
writeln!(out, "{:<10} {:>14} {}", c.status.name(), textutil::signed_size(c.delta), textutil::sanitize(&c.path))?;
}
Ok(())
}
fn run_duplicates(out: &mut dyn Write, cancel: &Cancel, tree: &RwLock<Tree>) -> Result<(), Error> {
let f = duplicate::Finder::default();
let groups = f.find(cancel, tree, duplicate::Options { min_size: 1, workers: 0 }).ok_or("cancelled")?;
let t = tree.read().unwrap();
let mut wasted = 0;
for g in &groups {
wasted += g.wasted();
let h: String = g.hash[..6].iter().map(|b| format!("{b:02x}")).collect();
writeln!(out, "{} × {} (sha256 {h}…)", textutil::size(g.size), g.files.len())?;
for &id in &g.files {
writeln!(out, " {}", textutil::sanitize_bytes(&t.path_bytes(id)))?;
}
}
let p = f.progress();
writeln!(
out,
"\n{} verified duplicate groups, {} reclaimable ({} candidates by size, {} unreadable/changed)\n",
groups.len(), textutil::size(wasted), p.candidates, p.skipped
)?;
Ok(())
}
rust/src/brand.rs
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//! Product name isolated so it can be changed in one place.
pub const NAME: &str = "mapsize";
pub const SNAPSHOT_EXT: &str = ".msz";
pub const SNAPSHOT_MAGIC: &[u8; 8] = b"MAPSIZE\x00";
/// Overridden at release time via the MAPSIZE_VERSION environment variable.
pub const VERSION: &str = match option_env!("MAPSIZE_VERSION") {
Some(v) => v,
None => env!("CARGO_PKG_VERSION"),
};
rust/src/cancel.rs
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//! A clonable cancellation token, the equivalent of a Go context's Done.
use crossbeam_channel::{Receiver, Sender};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::{Arc, Mutex};
#[derive(Clone)]
pub struct Cancel(Arc<Inner>);
struct Inner {
flag: AtomicBool,
tx: Mutex<Option<Sender<()>>>,
rx: Receiver<()>,
}
impl Default for Cancel {
fn default() -> Self {
Self::new()
}
}
impl Cancel {
pub fn new() -> Cancel {
let (tx, rx) = crossbeam_channel::bounded(0);
Cancel(Arc::new(Inner { flag: AtomicBool::new(false), tx: Mutex::new(Some(tx)), rx }))
}
pub fn cancel(&self) {
self.0.flag.store(true, Ordering::Relaxed);
self.0.tx.lock().unwrap().take();
}
pub fn is_cancelled(&self) -> bool {
self.0.flag.load(Ordering::Relaxed)
}
/// Becomes ready (disconnected) once cancelled; for use in select.
pub fn done(&self) -> &Receiver<()> {
&self.0.rx
}
}
impl Cancel {
/// Async-signal-safe half of cancel(): sets the flag only. Pollers must
/// follow up with cancel() to wake select-based waiters.
pub fn cancel_flag_only(&self) {
self.0.flag.store(true, Ordering::Relaxed);
}
}
rust/src/config.rs
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//! User settings from a JSON file in the OS-specific user configuration
//! directory. Knows nothing about rendering.
use crate::brand;
use serde::Deserialize;
use std::collections::HashMap;
use std::path::PathBuf;
/// User preferences. Load starts from the defaults and overlays the file.
#[derive(Clone, Debug, Deserialize)]
#[serde(default)]
pub struct Settings {
pub workers: String, // conservative|balanced|aggressive|N
pub follow_symlinks: String, // none|same-filesystem|all
pub one_file_system: bool,
pub units: String, // iec|si
pub size_mode: String, // allocated|logical
pub theme: String,
pub mouse: bool,
pub excludes: Vec<String>,
/// Maps an extension (without dot) to "#rrggbb".
pub extension_colors: HashMap<String, String>,
/// Maps a category name to "#rrggbb".
pub category_colors: HashMap<String, String>,
/// UI refresh rate while scanning.
pub refresh_hz: i64,
}
impl Default for Settings {
fn default() -> Self {
Settings {
workers: "balanced".into(),
follow_symlinks: "none".into(),
one_file_system: false,
units: "iec".into(),
size_mode: "allocated".into(),
theme: "default".into(),
mouse: true,
excludes: Vec::new(),
extension_colors: HashMap::new(),
category_colors: HashMap::new(),
refresh_hz: 10,
}
}
}
/// The config file location.
pub fn path() -> Option<PathBuf> {
let env = |k: &str| std::env::var_os(k).filter(|v| !v.is_empty()).map(PathBuf::from);
let dir = if cfg!(target_os = "macos") {
env("HOME")?.join("Library/Application Support")
} else {
env("XDG_CONFIG_HOME").or_else(|| env("HOME").map(|h| h.join(".config")))?
};
Some(dir.join(brand::NAME).join("config.json"))
}
/// Reads the config file if present. A missing file is not an error.
pub fn load() -> (Settings, Option<String>) {
let Some(p) = path() else { return (Settings::default(), None) };
let b = match std::fs::read(&p) {
Ok(b) => b,
Err(e) if e.kind() == std::io::ErrorKind::NotFound => return (Settings::default(), None),
Err(e) => return (Settings::default(), Some(e.to_string())),
};
match serde_json::from_slice::<Settings>(&b) {
Ok(mut s) => {
if !(1..=60).contains(&s.refresh_hz) {
s.refresh_hz = 10;
}
(s, None)
}
Err(e) => (Settings::default(), Some(e.to_string())),
}
}
rust/src/duplicate.rs
+315
View File
@@ -0,0 +1,315 @@
//! Finds files with identical content in stages:
//!
//! 1. group by exact size (inventory only, no I/O)
//! 2. hash three 16 KiB samples (start, middle, end) of each candidate
//! 3. full SHA-256 of files whose samples still collide
//!
//! Only stage 3 establishes identity. Files are never declared duplicates by
//! name or size alone. Reading files may update their access times.
use crate::cancel::Cancel;
use crate::inventory::{Kind, NodeId, Tree, FLAG_HARDLINK_DUP};
use crate::platform;
use sha2::{Digest, Sha256};
use std::collections::HashMap;
use std::fs::File;
use std::io::{self, Read};
use std::os::unix::fs::FileExt;
use std::path::PathBuf;
use std::sync::atomic::{AtomicI64, AtomicUsize, Ordering};
use std::sync::{Mutex, RwLock};
/// A set of files verified to have identical content.
#[derive(Clone, Debug)]
pub struct Group {
pub size: i64,
pub hash: [u8; 32],
pub files: Vec<NodeId>,
}
impl Group {
/// The bytes reclaimable by keeping one copy.
pub fn wasted(&self) -> i64 {
self.size * (self.files.len() as i64 - 1)
}
}
/// Reports activity.
#[derive(Clone, Default, Debug)]
pub struct Progress {
pub stage: String,
pub candidates: i64, // files sharing a size with another file
pub bytes_to_hash: i64,
pub bytes_hashed: i64,
pub skipped: i64, // unreadable or changed during hashing
pub verified_groups: i64,
pub candidate_groups: i64,
}
/// Tunes the search.
#[derive(Clone, Copy, Default)]
pub struct Options {
pub min_size: i64, // ignore files smaller than this (default 1 byte)
pub workers: usize, // concurrent readers (default 4)
}
#[derive(Clone)]
struct Cand {
id: NodeId,
path: PathBuf,
size: i64,
}
const SAMPLE_SIZE: i64 = 16 << 10;
type HashFn = fn(&Finder, &Cand) -> Option<[u8; 32]>;
/// Runs a search and exposes live progress.
#[derive(Default)]
pub struct Finder {
hashed: AtomicI64,
to_hash: AtomicI64,
skipped: AtomicI64,
p: Mutex<Progress>,
}
impl Finder {
/// A copy of the current progress.
pub fn progress(&self) -> Progress {
let mut p = self.p.lock().unwrap().clone();
p.bytes_hashed = self.hashed.load(Ordering::Relaxed);
p.bytes_to_hash = self.to_hash.load(Ordering::Relaxed);
p.skipped = self.skipped.load(Ordering::Relaxed);
p
}
fn stage(&self, s: &str, f: impl FnOnce(&mut Progress)) {
let mut p = self.p.lock().unwrap();
p.stage = s.to_string();
f(&mut p);
}
/// Searches the tree, taking its own read lock only while collecting
/// candidates. None if cancelled.
pub fn find(&self, cancel: &Cancel, tree: &RwLock<Tree>, mut o: Options) -> Option<Vec<Group>> {
o.min_size = o.min_size.max(1);
if o.workers < 1 {
o.workers = 4;
}
self.stage("grouping by size", |_| {});
let mut groups: Vec<Vec<Cand>> = Vec::new();
let mut ncand = 0i64;
{
let t = tree.read().unwrap();
let mut by_size: HashMap<i64, Vec<Cand>> = HashMap::new();
t.walk(t.root(), |id, n| {
if n.kind == Kind::File && !n.has(FLAG_HARDLINK_DUP) && n.size >= o.min_size {
by_size.entry(n.size).or_default().push(Cand { id, path: PathBuf::new(), size: n.size });
}
true
});
for mut g in by_size.into_values() {
if g.len() > 1 {
for c in &mut g {
c.path = t.path(c.id);
}
ncand += g.len() as i64;
groups.push(g);
}
}
}
self.stage("sampling", |p| {
p.candidates = ncand;
p.candidate_groups = groups.len() as i64;
});
// Stage 2: sample hashes.
let mut sampled: Vec<Vec<Cand>> = Vec::new();
for g in groups {
if cancel.is_cancelled() {
return None;
}
if g[0].size <= 3 * SAMPLE_SIZE {
sampled.push(g); // a sample would be the whole file
continue;
}
sampled.extend(self.split(cancel, &g, o.workers, sample_hash).into_values().filter(|v| v.len() > 1));
}
// Stage 3: full hashes.
self.to_hash.store(sampled.iter().map(|g| g[0].size * g.len() as i64).sum(), Ordering::Relaxed);
self.stage("hashing", |_| {});
let mut out = Vec::new();
for g in &sampled {
if cancel.is_cancelled() {
return None;
}
for (hash, v) in self.split(cancel, g, o.workers, full_hash) {
if v.len() > 1 {
let mut files: Vec<NodeId> = v.iter().map(|c| c.id).collect();
files.sort_unstable();
out.push(Group { size: v[0].size, hash, files });
}
}
}
if cancel.is_cancelled() {
return None;
}
out.sort_by(|a, b| b.wasted().cmp(&a.wasted()).then(a.files[0].cmp(&b.files[0])));
self.stage("done", |p| p.verified_groups = out.len() as i64);
Some(out)
}
/// Hashes every candidate with a bounded pool of reader threads and
/// buckets the successes by hash. Stops starting new reads once cancelled.
fn split(&self, cancel: &Cancel, g: &[Cand], workers: usize, f: HashFn) -> HashMap<[u8; 32], Vec<Cand>> {
let next = AtomicUsize::new(0);
let results = Mutex::new(Vec::with_capacity(g.len()));
std::thread::scope(|s| {
for _ in 0..workers.min(g.len()) {
s.spawn(|| loop {
let i = next.fetch_add(1, Ordering::Relaxed);
if i >= g.len() || cancel.is_cancelled() {
break;
}
match f(self, &g[i]) {
Some(sum) => results.lock().unwrap().push((i, sum)),
None => {
self.skipped.fetch_add(1, Ordering::Relaxed);
}
}
});
}
});
let mut res = results.into_inner().unwrap();
res.sort_unstable_by_key(|r| r.0);
let mut by: HashMap<[u8; 32], Vec<Cand>> = HashMap::new();
for (i, sum) in res {
by.entry(sum).or_default().push(g[i].clone());
}
by
}
}
/// Opens a candidate (never following symlinks or blocking on FIFOs) and
/// checks it is still a regular file of the inventoried size.
fn open(c: &Cand) -> Option<File> {
let fh = platform::open_content(&c.path).ok()?;
let md = fh.metadata().ok()?;
(md.is_file() && md.len() as i64 == c.size).then_some(fh)
}
fn sample_hash(_: &Finder, c: &Cand) -> Option<[u8; 32]> {
let fh = open(c)?;
let mut h = Sha256::new();
let mut buf = vec![0u8; SAMPLE_SIZE as usize];
for off in [0, c.size / 2 - SAMPLE_SIZE / 2, c.size - SAMPLE_SIZE] {
match fh.read_exact_at(&mut buf, off as u64) {
Ok(()) => {}
Err(e) if e.kind() == io::ErrorKind::UnexpectedEof => {} // shrank; stage 3 rejects it
Err(_) => return None,
}
h.update(&buf);
}
Some(h.finalize().into())
}
fn full_hash(f: &Finder, c: &Cand) -> Option<[u8; 32]> {
let mut fh = open(c)?;
let mut h = Sha256::new();
let mut buf = vec![0u8; 32 << 10];
let mut n = 0i64;
loop {
match fh.read(&mut buf) {
Ok(0) => break,
Ok(k) => {
h.update(&buf[..k]);
n += k as i64;
f.hashed.fetch_add(k as i64, Ordering::Relaxed);
}
Err(e) if e.kind() == io::ErrorKind::Interrupted => {}
Err(_) => return None,
}
}
(n == c.size).then(|| h.finalize().into())
}
#[cfg(test)]
mod tests {
use super::*;
use crate::scan::{self, tests::TempDir};
use std::os::unix::ffi::OsStrExt;
use std::path::Path;
use std::sync::Arc;
use std::time::Duration;
fn scan(root: &Path, workers: usize) -> Arc<RwLock<Tree>> {
let s = scan::start(root.as_os_str().as_bytes(), scan::Options { workers, ..Default::default() }, Cancel::new()).unwrap();
s.wait();
s.tree.clone()
}
#[test]
fn find() {
let root = TempDir::new("dup");
let big: Vec<u8> = (0..200_000usize).map(|i| (i * 7) as u8).collect();
let w = |name: &str, b: &[u8]| std::fs::write(root.0.join(name), b).unwrap();
w("a.bin", &big);
w("b.bin", &big);
// Same size, same samples, different middle-of-nowhere byte: must not match.
let mut c = big.clone();
c[20_000] ^= 1;
w("c.bin", &c);
w("small1", b"hello");
w("small2", b"hello");
w("small3", b"world"); // same size, different content
let tree = scan(&root.0, 2);
let f = Finder::default();
let groups = f.find(&Cancel::new(), &tree, Options::default()).unwrap();
assert_eq!(groups.len(), 2);
let t = tree.read().unwrap();
let names = |g: &Group| {
let mut v: Vec<String> = g.files.iter().map(|&id| t.node(id).name_str().into_owned()).collect();
v.sort();
v
};
assert_eq!(names(&groups[0]), ["a.bin", "b.bin"], "big group");
assert_eq!(groups[0].size, 200_000);
assert_eq!(names(&groups[1]), ["small1", "small2"], "small group");
let p = f.progress();
assert!(p.candidates == 6 && p.verified_groups == 2, "progress {p:?}");
}
/// A candidate replaced by a FIFO (or a symlink to one) after the scan
/// must be skipped, not block the search forever in open(2).
#[test]
fn find_skips_swapped_fifo() {
let root = TempDir::new("dupfifo");
let other = TempDir::new("dupfifo2");
for n in ["a", "b", "c"] {
std::fs::write(root.0.join(n), b"same").unwrap();
}
let tree = scan(&root.0, 1);
let mkfifo = |p: &Path| {
let c = std::ffi::CString::new(p.as_os_str().as_bytes()).unwrap();
unsafe { libc::mkfifo(c.as_ptr(), 0o644) == 0 }
};
std::fs::remove_file(root.0.join("b")).unwrap();
if !mkfifo(&root.0.join("b")) {
eprintln!("mkfifo unsupported; skipping");
return;
}
let fifo2 = other.0.join("p");
assert!(mkfifo(&fifo2));
std::fs::remove_file(root.0.join("c")).unwrap();
std::os::unix::fs::symlink(&fifo2, root.0.join("c")).unwrap();
let f = Arc::new(Finder::default());
let (tx, rx) = crossbeam_channel::bounded(1);
let (f2, t2) = (f.clone(), tree.clone());
std::thread::spawn(move || tx.send(f2.find(&Cancel::new(), &t2, Options::default()).is_some()));
assert!(rx.recv_timeout(Duration::from_secs(5)).expect("duplicate search blocked on a FIFO"));
assert_eq!(f.progress().skipped, 2);
}
}
rust/src/export.rs
+222
View File
@@ -0,0 +1,222 @@
//! Writes inventories as JSON, CSV or plain-text reports. Callers hold the
//! tree's read lock (or own the tree exclusively).
use crate::brand;
use crate::inventory::{self as inv, Flags, Kind, NodeId, SizeMode, Tree, NO_NODE};
use crate::textutil;
use std::io::{self, Write};
use std::time::UNIX_EPOCH;
const FLAG_NAMES: [(Flags, &str); 12] = [
(inv::FLAG_HARDLINK_DUP, "hardlink-duplicate"), (inv::FLAG_MOUNT_POINT, "mount-point"),
(inv::FLAG_VIRTUAL_FS, "virtual-fs-skipped"), (inv::FLAG_SKIPPED_FS, "other-fs-skipped"),
(inv::FLAG_SPARSE, "sparse"), (inv::FLAG_ERROR, "error"), (inv::FLAG_INCOMPLETE, "incomplete"),
(inv::FLAG_LOOP, "loop-skipped"), (inv::FLAG_FOLLOWED, "followed-symlink"),
(inv::FLAG_ALLOC_UNKNOWN, "allocated-unknown"), (inv::FLAG_BROKEN_LINK, "broken-symlink"),
(inv::FLAG_HARDLINKED, "hardlinked"),
];
/// Human-readable names for a node's flags.
pub fn flag_list(f: Flags) -> Vec<&'static str> {
FLAG_NAMES.iter().filter(|(b, _)| f & b != 0).map(|(_, n)| *n).collect()
}
fn kind_name(k: Kind) -> &'static str {
["file", "dir", "symlink", "other"][k as usize]
}
fn json_str(s: &str) -> String {
serde_json::to_string(s).unwrap()
}
/// Writes the tree beneath root as nested JSON, down to max_depth levels
/// (negative means unlimited).
pub fn json(w: &mut dyn Write, t: &Tree, root: NodeId, max_depth: i64) -> io::Result<()> {
let mut bw = io::BufWriter::new(w);
let st = &t.stats;
let errors: serde_json::Map<String, serde_json::Value> = st
.err_counts
.iter()
.enumerate()
.filter(|(_, &c)| c > 0)
.map(|(k, &c)| (inv::ErrKind::from_u8(k as u8).name().to_string(), c.into()))
.collect();
let started = st.start.duration_since(UNIX_EPOCH).map_or(0, |d| d.as_nanos() as i64);
let head = serde_json::json!({
"generator": format!("{} {}", brand::NAME, brand::VERSION),
"root": t.path_string(root),
"complete": !st.incomplete(),
"cancelled": st.cancelled,
"started": textutil::rfc3339_utc(started),
"elapsed_s": st.elapsed().as_secs_f64(),
"errors": errors,
"excluded": st.excluded,
"excludes": st.excludes,
"hardlink_duplicates": st.hardlink_dups,
});
let hb = serde_json::to_string(&head)?;
bw.write_all(&hb.as_bytes()[..hb.len() - 1])?;
bw.write_all(b",\"tree\":")?;
write_node(&mut bw, t, root, max_depth)?;
bw.write_all(b"}\n")?;
bw.flush()
}
/// Streams one node; children are written recursively so memory stays
/// proportional to depth, not tree size.
fn write_node(bw: &mut impl Write, t: &Tree, id: NodeId, depth: i64) -> io::Result<()> {
let n = t.node(id);
write!(bw, "{{\"name\":{},\"type\":\"{}\",\"size\":{},\"allocated\":{}", json_str(&n.name_str()), kind_name(n.kind), n.tot_size, n.tot_alloc)?;
for (k, v) in [("files", n.files), ("dirs", n.dirs), ("errors", n.errors)] {
if v != 0 {
write!(bw, ",\"{k}\":{v}")?;
}
}
if n.mtime != 0 {
write!(bw, ",\"modified\":\"{}\"", textutil::rfc3339_utc(n.mtime))?;
}
let flags = flag_list(n.flags);
if !flags.is_empty() {
write!(bw, ",\"flags\":{}", serde_json::to_string(&flags)?)?;
}
if n.first_child == NO_NODE || depth == 0 {
return bw.write_all(b"}");
}
bw.write_all(b",\"children\":[")?;
for (i, c) in t.sorted_children(id, SizeMode::Allocated).into_iter().enumerate() {
if i > 0 {
bw.write_all(b",")?;
}
write_node(bw, t, c, depth - 1)?;
}
bw.write_all(b"]}")
}
fn csv_field(s: &str) -> String {
if s.contains([',', '"', '\n', '\r']) || s.starts_with(' ') {
format!("\"{}\"", s.replace('"', "\"\""))
} else {
s.to_string()
}
}
/// Writes one row per node beneath root (depth-limited). Paths are
/// sanitised so the output is safe to print to a terminal.
pub fn csv(w: &mut dyn Write, t: &Tree, root: NodeId, max_depth: i64) -> io::Result<()> {
let mut bw = io::BufWriter::new(w);
bw.write_all(b"path,type,size,allocated,files,dirs,errors,modified,flags\n")?;
fn rec(bw: &mut impl Write, t: &Tree, id: NodeId, path: &[u8], depth: i64) -> io::Result<()> {
let n = t.node(id);
let modified = if n.mtime != 0 { textutil::rfc3339_utc(n.mtime) } else { String::new() };
writeln!(
bw,
"{},{},{},{},{},{},{},{},{}",
csv_field(&textutil::sanitize_bytes(path)),
kind_name(n.kind),
n.tot_size, n.tot_alloc, n.files, n.dirs, n.errors, modified,
flag_list(n.flags).join("|")
)?;
if depth == 0 {
return Ok(());
}
for c in t.sorted_children(id, SizeMode::Allocated) {
rec(bw, t, c, &crate::platform::join_path(path, &t.node(c).name), depth - 1)?;
}
Ok(())
}
rec(&mut bw, t, root, &t.path_bytes(root), max_depth)?;
bw.flush()
}
/// Writes "size % files path" rows for the given nodes.
pub fn table(w: &mut dyn Write, t: &Tree, ids: &[NodeId], m: SizeMode) -> io::Result<()> {
let total = t.node(t.root()).total(m);
writeln!(w, "{:>12} {:>6} {:>12} PATH", "SIZE", "%", "FILES")?;
for &id in ids {
let n = t.node(id);
let files = if n.is_dir() { textutil::count(n.files as i64) } else { String::new() };
writeln!(
w,
"{:>12} {:>6} {:>12} {}",
textutil::size(n.total(m)),
textutil::percent(n.total(m), total),
files,
textutil::sanitize_bytes(&t.path_bytes(id))
)?;
}
Ok(())
}
/// Writes the scan summary, making incompleteness explicit.
pub fn summary(w: &mut dyn Write, t: &Tree) -> io::Result<()> {
let st = &t.stats;
let r = t.node(t.root());
writeln!(w, "Root {}", textutil::sanitize_bytes(&st.root))?;
writeln!(w, "Files {}", textutil::count(st.files + st.symlinks + st.others))?;
writeln!(w, "Directories {}", textutil::count(st.dirs))?;
writeln!(w, "Logical size {} ({} bytes)", textutil::size(r.tot_size), r.tot_size)?;
writeln!(w, "Allocated size {} ({} bytes)", textutil::size(r.tot_alloc), r.tot_alloc)?;
writeln!(w, "Elapsed {}", textutil::go_duration(st.elapsed()))?;
for (k, &c) in st.err_counts.iter().enumerate() {
if c > 0 {
writeln!(w, "{:<15} {}", inv::ErrKind::from_u8(k as u8).name(), textutil::count(c))?;
}
}
if st.excluded > 0 {
writeln!(w, "Excluded {} entries ({})", textutil::count(st.excluded), textutil::sanitize(&st.excludes.join(", ")))?;
}
if st.skipped_mounts > 0 {
writeln!(w, "Other FS skipped {}", textutil::count(st.skipped_mounts))?;
}
if st.virtual_skipped > 0 {
writeln!(w, "Virtual FS skipped {}", textutil::count(st.virtual_skipped))?;
}
if st.hardlink_dups > 0 {
writeln!(w, "Hard-link dups {} (counted once)", textutil::count(st.hardlink_dups))?;
}
if st.incomplete() {
writeln!(w, "WARNING: totals are incomplete — some data could not be inspected.")?;
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
fn hostile_tree() -> Tree {
let mut t = Tree::new(b"/r", Kind::Dir);
let d = t.add(0, b"esc\x1b[2Jdir", Kind::Dir);
let f = t.add(d, b"nl\nname\x07.txt", Kind::File);
t.node_mut(f).size = 10;
t.node_mut(f).alloc = 4096;
t.stats.complete = true;
t.recompute();
t
}
#[test]
fn outputs_are_terminal_safe() {
let t = hostile_tree();
for out in [
{ let mut b = Vec::new(); json(&mut b, &t, 0, -1).unwrap(); b },
{ let mut b = Vec::new(); csv(&mut b, &t, 0, -1).unwrap(); b },
{ let mut b = Vec::new(); table(&mut b, &t, &[1, 2], SizeMode::Allocated).unwrap(); b },
] {
assert!(!out.iter().any(|&c| c == 0x1b || c == 0x07), "{}", String::from_utf8_lossy(&out));
}
let mut b = Vec::new();
json(&mut b, &t, 0, -1).unwrap();
let v: serde_json::Value = serde_json::from_slice(&b).unwrap();
assert_eq!(v["tree"]["children"][0]["children"][0]["size"], 10);
}
#[test]
fn json_depth_limit() {
let t = hostile_tree();
let mut b = Vec::new();
json(&mut b, &t, 0, 1).unwrap();
let v: serde_json::Value = serde_json::from_slice(&b).unwrap();
assert!(v["tree"]["children"][0].get("children").is_none());
}
}
rust/src/filter/apply.rs
+79
View File
@@ -0,0 +1,79 @@
use super::eval::Ctx;
use super::parser::Query;
use crate::cancel::Cancel;
use crate::inventory::{NodeId, SizeMode, Tree, FLAG_HARDLINK_DUP};
use std::sync::Arc;
use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
/// Per-node filtered sizes: the bytes of matching content beneath each node.
/// A matching directory contributes its whole subtree (once, even if
/// descendants match too). matched marks every node satisfying the query.
/// Nodes added after the result was computed (live scan) have no entry and
/// are treated as not matching until the filter is re-applied.
pub struct FilterResult {
pub query: Arc<Query>,
pub mode: SizeMode,
pub sizes: Vec<i64>, // per NodeId; len = tree size at evaluation time
pub matched: Vec<bool>, // node itself matched
pub count: i64, // number of matching nodes
pub total: i64,
pub elapsed: Duration,
}
impl FilterResult {
/// The filtered size of id (0 if out of range).
pub fn size(&self, id: NodeId) -> i64 {
self.sizes.get(id as usize).copied().unwrap_or(0)
}
/// Reports whether id itself matched.
pub fn is_match(&self, id: NodeId) -> bool {
self.matched.get(id as usize).copied().unwrap_or(false)
}
}
/// Evaluates q over the whole tree. The caller holds the read lock. It relies
/// on parents having smaller IDs than their children. None if cancelled.
pub fn apply(cancel: &Cancel, t: &Tree, q: Arc<Query>, m: SizeMode) -> Option<FilterResult> {
let start = Instant::now();
let n = t.len();
let mut sizes = vec![0i64; n];
let mut matched = vec![false; n];
let mut covered = vec![false; n];
let mut count = 0;
let now = SystemTime::now().duration_since(UNIX_EPOCH).map_or(0, |d| d.as_nanos() as i64);
let mut c = Ctx::new(t, 0, now);
if q.uses_path {
c.dir_paths = Some(vec![String::new(); n]);
}
for i in 0..n {
if i & 0xffff == 0 && cancel.is_cancelled() {
return None;
}
let id = i as NodeId;
let nd = t.node(id);
c.reset(id);
if c.dir_paths.is_some() && nd.is_dir() {
c.fill_path();
let p = c.path.clone();
c.dir_paths.as_mut().unwrap()[i] = p;
}
if i > 0 && q.matches(&mut c) {
matched[i] = true;
covered[i] = true;
count += 1;
}
if i > 0 && covered[nd.parent as usize] {
covered[i] = true;
}
if covered[i] && nd.flags & FLAG_HARDLINK_DUP == 0 {
sizes[i] = nd.own(m);
}
}
for i in (1..n).rev() {
let p = t.node(i as NodeId).parent as usize;
sizes[p] = sizes[p].saturating_add(sizes[i]);
}
let total = sizes.first().copied().unwrap_or(0);
Some(FilterResult { query: q, mode: m, sizes, matched, count, total, elapsed: start.elapsed() })
}
rust/src/filter/eval.rs
+159
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@@ -0,0 +1,159 @@
use super::parser::{Field, Query};
use crate::inventory::{Flags, Node, NodeId, Tree};
use crate::platform;
use regex::Regex;
use std::borrow::Cow;
/// The evaluation context for one node. The tree must be read-locked.
pub struct Ctx<'a> {
pub tree: &'a Tree,
pub id: NodeId,
pub node: &'a Node,
pub now: i64, // unix nanoseconds
// The lower-cased path of the node once has_path is set; the buffers are
// reused across nodes so the per-node cost is one copy, not allocations.
pub(super) path: String,
pub(super) has_path: bool,
name: String,
// dir_paths caches lower-cased directory paths (by NodeId; empty for
// files) during apply, which visits parents before children, so a node's
// path is one concatenation.
pub(super) dir_paths: Option<Vec<String>>,
}
/// Appends name lower-cased, without allocating for ASCII names.
fn push_lower(buf: &mut String, name: &[u8]) {
if name.is_ascii() {
buf.extend(name.iter().map(|b| b.to_ascii_lowercase() as char));
} else {
buf.push_str(&String::from_utf8_lossy(name).to_lowercase());
}
}
impl<'a> Ctx<'a> {
pub fn new(tree: &'a Tree, id: NodeId, now: i64) -> Ctx<'a> {
Ctx { tree, id, node: tree.node(id), now, path: String::new(), has_path: false, name: String::new(), dir_paths: None }
}
/// Moves the context to another node.
pub(super) fn reset(&mut self, id: NodeId) {
self.id = id;
self.node = self.tree.node(id);
self.has_path = false;
}
fn str(&mut self, f: Field) -> Cow<'_, str> {
let n = self.node;
match f {
Field::Name => {
self.name.clear();
push_lower(&mut self.name, &n.name);
self.name.as_str().into()
}
Field::Path => {
if !self.has_path {
self.fill_path();
}
self.path.as_str().into()
}
Field::Ext => self.tree.ext_name(n).into(),
Field::Type => n.kind.name().to_lowercase().into(),
Field::Category if n.is_dir() => "directory".into(),
Field::Category => n.cat.name().to_lowercase().into(),
Field::Owner => platform::user_name(n.uid).to_lowercase().into(),
Field::Group => platform::group_name(n.gid).to_lowercase().into(),
_ => "".into(),
}
}
fn num(&self, f: Field) -> i64 {
let n = self.node;
match f {
Field::Size => n.tot_size,
Field::Allocated => n.tot_alloc,
Field::Age => self.now.saturating_sub(n.mtime),
Field::Modified => n.mtime,
Field::Files => n.files as i64,
_ => 0,
}
}
/// Computes the lower-cased path into self.path.
pub(super) fn fill_path(&mut self) {
self.has_path = true;
self.path.clear();
if let Some(pp) = self.dir_paths.as_ref().and_then(|dp| dp.get(self.node.parent as usize)).filter(|p| !p.is_empty()) {
self.path.push_str(pp);
if !pp.ends_with('/') {
self.path.push('/');
}
push_lower(&mut self.path, &self.node.name);
return;
}
self.path.push_str(&self.tree.path_string(self.id).to_lowercase());
}
}
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub(super) enum NumOp {
Eq,
Ne,
Gt,
Ge,
Lt,
Le,
}
/// A compiled query expression.
pub(super) enum Expr {
And(Box<Expr>, Box<Expr>),
Or(Box<Expr>, Box<Expr>),
Not(Box<Expr>),
Contains(Field, String),
Glob(Field, String),
Re(Field, Regex),
Eq(Field, Vec<String>),
Flag(Flags), // any of these flags set
Num(Field, NumOp, Vec<i64>),
False, // malformed bare glob
}
impl Expr {
fn eval(&self, c: &mut Ctx) -> bool {
match self {
Expr::And(l, r) => l.eval(c) && r.eval(c),
Expr::Or(l, r) => l.eval(c) || r.eval(c),
Expr::Not(n) => !n.eval(c),
Expr::Contains(f, sub) => c.str(*f).contains(sub.as_str()),
Expr::Glob(f, pat) => platform::glob_match(pat.as_bytes(), c.str(*f).as_bytes()),
Expr::Re(f, re) => re.is_match(&c.str(*f)),
Expr::Eq(f, set) => {
let v = c.str(*f);
set.iter().any(|s| *s == v)
}
Expr::Flag(mask) => c.node.flags & mask != 0,
Expr::Num(f, op, vals) => {
if matches!(f, Field::Age | Field::Modified) && c.node.mtime == 0 {
return false; // unknown time never matches
}
let v = c.num(*f);
vals.iter().any(|&x| match op {
NumOp::Eq => v == x,
NumOp::Ne => v != x,
NumOp::Gt => v > x,
NumOp::Ge => v >= x,
NumOp::Lt => v < x,
NumOp::Le => v <= x,
})
}
Expr::False => false,
}
}
}
impl Query {
/// Evaluates the query against one node.
pub fn matches(&self, c: &mut Ctx) -> bool {
self.root.eval(c)
}
}
rust/src/filter/lexer.rs
+95
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@@ -0,0 +1,95 @@
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub(super) enum TokKind {
Eof,
Word,
Str,
Op,
LParen,
RParen,
Comma,
}
#[derive(Clone, Debug)]
pub(super) struct Token {
pub kind: TokKind,
pub val: String,
pub pos: usize, // byte offset
}
fn tok(kind: TokKind, val: &str, pos: usize) -> Token {
Token { kind, val: val.to_string(), pos }
}
/// ASCII white space as Go's unicode.IsSpace sees it.
fn is_space(c: u8) -> bool {
matches!(c, b' ' | b'\t' | b'\n' | b'\x0b' | b'\x0c' | b'\r')
}
pub(super) fn lex(s: &str) -> Result<Vec<Token>, String> {
use TokKind::*;
let b = s.as_bytes();
let mut out = Vec::new();
let mut i = 0;
while i < b.len() {
let c = b[i];
match c {
// All of is_space, not just " \t\n\r": a word can't start on a
// space byte, so anything else here would never advance.
_ if is_space(c) => i += 1,
b'(' => {
out.push(tok(LParen, "(", i));
i += 1;
}
b')' => {
out.push(tok(RParen, ")", i));
i += 1;
}
b',' => {
out.push(tok(Comma, ",", i));
i += 1;
}
b'"' | b'\'' => {
let start = i;
i += 1;
let mut v = Vec::new();
while i < b.len() && b[i] != c {
if b[i] == b'\\' && i + 1 < b.len() {
i += 1;
}
v.push(b[i]);
i += 1;
}
if i >= b.len() {
return Err(format!("unterminated string at {}", start + 1));
}
i += 1;
// Only ASCII bytes were dropped, so v is still valid UTF-8.
out.push(Token { kind: Str, val: String::from_utf8_lossy(&v).into_owned(), pos: start });
}
b'=' | b'!' | b'<' | b'>' | b'~' | b'&' | b'|' => {
let start = i;
let n = b.get(i + 1).copied();
let two = n == Some(b'=') || (c == b'&' && n == Some(b'&')) || (c == b'|' && n == Some(b'|'));
let op = &s[i..i + 1 + two as usize];
i += op.len();
match op {
"&&" => out.push(tok(Word, "AND", start)),
"||" => out.push(tok(Word, "OR", start)),
"!" => out.push(tok(Word, "NOT", start)),
"&" | "|" => return Err(format!("unexpected {op:?} at {}", start + 1)),
"==" => out.push(tok(Op, "=", start)),
_ => out.push(tok(Op, op, start)),
}
}
_ => {
let start = i;
while i < b.len() && !is_space(b[i]) && !b"()=!<>~,\"'&|".contains(&b[i]) {
i += 1;
}
out.push(tok(Word, &s[start..i], start));
}
}
}
out.push(tok(Eof, "", s.len()));
Ok(out)
}
rust/src/filter/mod.rs
+127
View File
@@ -0,0 +1,127 @@
//! The search/filter query language:
//!
//! ```text
//! query := or
//! or := and { OR and }
//! and := unary { [AND] unary } (juxtaposition means AND)
//! unary := NOT unary | "(" query ")" | cmp | word
//! cmp := field op value
//! op := = | != | > | >= | < | <= | contains | matches | in | ~
//! value := word | "quoted string" | "(" value { "," value } ")"
//! ```
//!
//! A bare word matches the name: substring (case-insensitive), or a glob if it
//! contains * ? or [. Parsing is independent of the UI and fully testable.
mod apply;
mod eval;
mod lexer;
mod parser;
pub use apply::{apply, FilterResult};
pub use eval::Ctx;
pub use parser::{parse, parse_age, parse_size, Field, Query, FIELDS};
#[cfg(test)]
mod tests {
use super::*;
use crate::cancel::Cancel;
use crate::inventory::{category_for, ext, Kind, NodeId, SizeMode, Tree};
use std::collections::HashSet;
use std::sync::Arc;
use std::time::{Duration, SystemTime, UNIX_EPOCH};
const HOUR: Duration = Duration::from_secs(3600);
const DAY: Duration = Duration::from_secs(86400);
fn tree() -> Tree {
let mut t = Tree::new(b"/srv", Kind::Dir);
let vms = t.add(0, b"vms", Kind::Dir);
let cache = t.add(0, b"cache", Kind::Dir);
let mut add = |p: NodeId, name: &str, size: i64, age: Duration| {
let id = t.add(p, name.as_bytes(), Kind::File);
let n = t.node_mut(id);
n.size = size;
n.alloc = size;
n.mtime = (SystemTime::now() - age).duration_since(UNIX_EPOCH).unwrap().as_nanos() as i64;
n.cat = category_for(&ext(name.as_bytes()), false, false);
};
add(vms, "ubuntu.qcow2", 80 << 30, 400 * DAY);
add(vms, "win.vmdk", 40 << 30, HOUR);
add(vms, "notes.txt", 1000, HOUR);
add(cache, "blob.iso", 700 << 20, 10 * DAY);
add(cache, "x.tmp", 10, HOUR);
t.recompute();
t
}
fn names(tr: &Tree, q: &str) -> HashSet<String> {
let pq = parse(q, SystemTime::now()).unwrap_or_else(|e| panic!("parse({q:?}): {e}"));
let r = apply(&Cancel::new(), tr, Arc::new(pq), SizeMode::Logical).unwrap();
(0..tr.len() as NodeId).filter(|&i| r.is_match(i)).map(|i| tr.node(i).name_str().into_owned()).collect()
}
#[test]
fn queries() {
let tr = tree();
let cases: &[(&str, &[&str])] = &[
("ubuntu", &["ubuntu.qcow2"]),
("*.iso", &["blob.iso"]),
("size > 1GB", &["vms", "ubuntu.qcow2", "win.vmdk"]),
("size > 1GB AND type = file", &["ubuntu.qcow2", "win.vmdk"]),
("ext = qcow2", &["ubuntu.qcow2"]),
("size > 500MB AND ext IN (iso,qcow2,vmdk)", &["ubuntu.qcow2", "win.vmdk", "blob.iso"]),
("path contains cache", &["cache", "blob.iso", "x.tmp"]),
("age > 365d", &["ubuntu.qcow2"]),
("NOT type = dir AND size < 1k", &["notes.txt", "x.tmp"]),
("(ext = iso OR ext = tmp) type=file", &["blob.iso", "x.tmp"]),
("category = vm", &["ubuntu.qcow2", "win.vmdk", "blob.iso"]),
("name matches '^w.*k$'", &["win.vmdk"]),
("ext != qcow2 && type = file && size > 1GB", &["win.vmdk"]),
("name = 'notes.txt'", &["notes.txt"]),
];
for (q, want) in cases {
let want: HashSet<String> = want.iter().map(|s| s.to_string()).collect();
assert_eq!(names(&tr, q), want, "{q:?}");
}
}
#[test]
fn filtered_sizes_no_double_count() {
let tr = tree();
let q = parse("name = vms OR ext = qcow2", SystemTime::now()).unwrap();
let r = apply(&Cancel::new(), &tr, Arc::new(q), SizeMode::Logical).unwrap();
assert_eq!(r.total, tr.node(1).tot_size, "matching dir must not double count matching child");
}
#[test]
fn parse_errors() {
for q in [
"", "size >", "size > banana", "(ext = iso", "ext = iso)", "size contains 5",
"name matches '['", "type = blob", "'unterminated", "a & b", "category = nope",
] {
assert!(parse(q, SystemTime::now()).is_err(), "parse({q:?}) should fail");
}
}
#[test]
fn dates_globs_and_non_ascii() {
let tr = tree();
assert_eq!(names(&tr, "modified < 2000-01-01"), HashSet::new());
assert_eq!(names(&tr, "modified > '2000-01-01 9:30'").len(), 5);
assert_eq!(names(&tr, "modified > 2000-01-01T00:00:00.5+01:00").len(), 5);
assert_eq!(names(&tr, "modified > 30d").len(), 4);
for bad in ["modified > 2024-02-30", "modified > 2024-01-31T10:00", "ext = 'a['"] {
assert!(parse(bad, SystemTime::now()).is_ok() == bad.ends_with("10:00"), "{bad}");
}
assert!(names(&tr, "[").is_empty()); // malformed bare glob matches nothing
assert!(names(&tr, "voilà\u{a0}x").is_empty()); // Go's lexer hangs on byte 0xA0
}
#[test]
fn parse_size_units() {
for (input, want) in [("1GB", 1_000_000_000), ("1GiB", 1 << 30), ("1.5k", 1536), ("500MB", 500_000_000), ("10", 10)] {
assert_eq!(parse_size(input), Ok(want), "{input}");
}
}
}
rust/src/filter/parser.rs
+531
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@@ -0,0 +1,531 @@
use super::eval::{Expr, NumOp};
use super::lexer::{lex, TokKind, Token};
use crate::inventory::{self as inv, Flags};
use regex::Regex;
use std::time::{Duration, SystemTime, UNIX_EPOCH};
/// A filterable attribute.
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub enum Field {
Name,
Path,
Ext,
Type,
Category,
Size,
Allocated,
Age,
Modified,
Owner,
Group,
Files,
Flag,
}
fn field_by_name(s: &str) -> Option<Field> {
use Field::*;
Some(match s {
"name" => Name,
"path" => Path,
"ext" | "extension" => Ext,
"type" | "kind" => Type,
"category" | "cat" => Category,
"size" => Size,
"allocated" | "alloc" => Allocated,
"age" => Age,
"modified" | "mtime" => Modified,
"owner" | "user" => Owner,
"group" => Group,
"files" => Files,
"flag" | "is" => Flag,
_ => return None,
})
}
/// Field names for help text.
pub const FIELDS: &str = "name path ext type category size allocated age modified owner group files flag";
/// A compiled filter.
pub struct Query {
src: String,
pub(super) root: Expr,
pub uses_path: bool,
}
impl std::fmt::Display for Query {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(&self.src)
}
}
struct Parser {
toks: Vec<Token>,
i: usize,
uses_path: bool,
now: SystemTime,
}
/// Compiles a query. now anchors relative ages (pass SystemTime::now()).
pub fn parse(s: &str, now: SystemTime) -> Result<Query, String> {
let toks = lex(s)?;
let mut p = Parser { toks, i: 0, uses_path: false, now };
if p.peek().kind == TokKind::Eof {
return Err("empty query".into());
}
let root = p.or()?;
let t = p.peek();
if t.kind != TokKind::Eof {
return Err(format!("unexpected {:?} at {}", t.val, t.pos + 1));
}
Ok(Query { src: s.to_string(), root, uses_path: p.uses_path })
}
fn is_kw(t: &Token, kw: &str) -> bool {
t.kind == TokKind::Word && t.val.eq_ignore_ascii_case(kw)
}
fn is_value(t: &Token) -> bool {
t.kind == TokKind::Word || t.kind == TokKind::Str
}
impl Parser {
fn peek(&self) -> &Token {
&self.toks[self.i]
}
fn next(&mut self) -> Token {
let t = self.toks[self.i].clone();
if t.kind != TokKind::Eof {
self.i += 1;
}
t
}
fn or(&mut self) -> Result<Expr, String> {
let mut l = self.and()?;
while is_kw(self.peek(), "OR") {
self.next();
let r = self.and()?;
l = Expr::Or(Box::new(l), Box::new(r));
}
Ok(l)
}
fn and(&mut self) -> Result<Expr, String> {
let mut l = self.unary()?;
loop {
let t = self.peek();
if is_kw(t, "AND") {
self.next();
} else if matches!(t.kind, TokKind::Eof | TokKind::RParen) || is_kw(t, "OR") {
return Ok(l);
}
let r = self.unary()?;
l = Expr::And(Box::new(l), Box::new(r));
}
}
fn unary(&mut self) -> Result<Expr, String> {
let t = self.peek().clone();
if is_kw(&t, "NOT") {
self.next();
return Ok(Expr::Not(Box::new(self.unary()?)));
}
if t.kind == TokKind::LParen {
self.next();
let n = self.or()?;
if self.next().kind != TokKind::RParen {
return Err(format!("missing ) for ( at {}", t.pos + 1));
}
return Ok(n);
}
if is_value(&t) {
self.next();
if let Some(f) = field_by_name(&t.val.to_lowercase()) {
if t.kind == TokKind::Word && self.is_op(self.peek()) {
let op = self.next();
return self.cmp(f, op);
}
}
return Ok(name_match(&t.val));
}
Err(format!("unexpected {:?} at {}", t.val, t.pos + 1))
}
fn is_op(&self, t: &Token) -> bool {
t.kind == TokKind::Op || is_kw(t, "contains") || is_kw(t, "matches") || is_kw(t, "in")
}
fn values(&mut self) -> Result<Vec<Token>, String> {
if self.peek().kind != TokKind::LParen {
let t = self.next();
if !is_value(&t) {
return Err(format!("expected value at {}", t.pos + 1));
}
return Ok(vec![t]);
}
self.next();
let mut out = Vec::new();
loop {
let t = self.next();
if !is_value(&t) {
return Err(format!("expected value at {}", t.pos + 1));
}
out.push(t);
let n = self.next();
match n.kind {
TokKind::Comma => {}
TokKind::RParen => return Ok(out),
_ => return Err(format!("expected , or ) at {}", n.pos + 1)),
}
}
}
fn cmp(&mut self, f: Field, op_tok: Token) -> Result<Expr, String> {
let mut op = op_tok.val.to_lowercase();
if op == "~" {
op = "matches".into();
}
let vals = self.values()?;
if op != "in" && vals.len() != 1 {
return Err(format!("operator {op} takes one value"));
}
if f == Field::Path {
self.uses_path = true;
}
if matches!(f, Field::Size | Field::Allocated | Field::Age | Field::Modified | Field::Files) {
let nop = match op.as_str() {
"=" | "in" => NumOp::Eq,
"!=" => NumOp::Ne,
">" => NumOp::Gt,
">=" => NumOp::Ge,
"<" => NumOp::Lt,
"<=" => NumOp::Le,
_ => return Err(format!("{op} cannot be used with numeric field")),
};
let nums = vals.iter().map(|v| self.number(f, &v.val)).collect::<Result<Vec<_>, _>>()?;
return Ok(Expr::Num(f, nop, nums));
}
// String-like fields.
match op.as_str() {
"contains" => Ok(Expr::Contains(f, vals[0].val.to_lowercase())),
"matches" => match Regex::new(&format!("(?i){}", vals[0].val)) {
Ok(re) => Ok(Expr::Re(f, re)),
Err(e) => Err(format!("bad regular expression: {e}")),
},
"=" | "!=" | "in" => {
let mut set = Vec::new();
for v in &vals {
let mut s = v.val.to_lowercase();
match f {
Field::Ext => s = s.strip_prefix('.').unwrap_or(&s).to_string(),
Field::Category => match inv::parse_category(&s) {
Some(c) => s = c.name().to_lowercase(),
None => return Err(format!("unknown category {:?}", v.val)),
},
Field::Type => s = norm_type(&s)?.to_string(),
Field::Flag if flag_bit(&s).is_none() => {
return Err(format!(
"unknown flag {:?} (sparse, hardlink, error, mount, incomplete, followed, broken)",
v.val
))
}
_ => {}
}
set.push(s);
}
let n = if f == Field::Flag {
Expr::Flag(set.iter().filter_map(|s| flag_bit(s)).fold(0, |a, b| a | b))
} else if set.len() == 1 && has_glob(&set[0]) {
if !glob_ok(set[0].as_bytes()) {
return Err(format!("bad pattern {:?}", vals[0].val));
}
Expr::Glob(f, set.pop().unwrap())
} else {
Expr::Eq(f, set)
};
Ok(if op == "!=" { Expr::Not(Box::new(n)) } else { n })
}
_ => Err(format!("operator {op} not valid for {}", op_tok.val)),
}
}
/// Parses sizes ("1.5GiB", "500MB", "10k"), ages ("365d", "2w") and dates
/// ("2024-01-31"). Ages and dates are converted to modification times
/// (unix nanoseconds) relative to self.now.
fn number(&self, f: Field, s: &str) -> Result<i64, String> {
match f {
Field::Size | Field::Allocated => parse_size(s),
Field::Files => s.parse::<i64>().map_err(|e| format!("bad number {s:?}: {e}")),
Field::Age => parse_age(s).map(nanos),
Field::Modified => {
if let Some(t) = parse_date(s) {
return Ok(t);
}
if let Ok(d) = parse_age(s) {
let now = self.now.duration_since(UNIX_EPOCH).map(nanos).unwrap_or(0);
return Ok(now.saturating_sub(nanos(d)));
}
Err(format!("bad date {s:?} (use YYYY-MM-DD or an age like 30d)"))
}
_ => Err("not numeric".into()),
}
}
}
fn nanos(d: Duration) -> i64 {
d.as_nanos().min(i64::MAX as u128) as i64
}
fn has_glob(s: &str) -> bool {
s.contains(['*', '?', '['])
}
pub(super) fn name_match(v: &str) -> Expr {
let lv = v.to_lowercase();
if has_glob(v) {
// Go's filepath.Match never matches a malformed pattern.
return if glob_ok(lv.as_bytes()) { Expr::Glob(Field::Name, lv) } else { Expr::False };
}
Expr::Contains(Field::Name, lv)
}
/// Reports whether pattern is well formed by Go's filepath.Match rules
/// (fnmatch, which does the matching, accepts anything).
fn glob_ok(p: &[u8]) -> bool {
// One possibly escaped character of a range; None if malformed.
let esc = |mut i: usize| -> Option<usize> {
match p.get(i)? {
b'-' | b']' => return None,
b'\\' => {
i += 1;
p.get(i)?;
}
_ => {}
}
Some(i + 1)
};
let mut i = 0;
while i < p.len() {
match p[i] {
b'\\' => {
if i + 1 >= p.len() {
return false;
}
i += 2;
}
b'[' => {
i += 1;
if p.get(i) == Some(&b'^') {
i += 1;
}
let mut n = 0;
loop {
if p.get(i) == Some(&b']') && n > 0 {
i += 1;
break;
}
let Some(j) = esc(i) else { return false };
i = j;
if p.get(i) == Some(&b'-') {
let Some(j) = esc(i + 1) else { return false };
i = j;
}
n += 1;
}
}
_ => i += 1,
}
}
true
}
fn norm_type(s: &str) -> Result<&'static str, String> {
match s {
"f" | "file" => Ok("file"),
"d" | "dir" | "directory" => Ok("directory"),
"l" | "link" | "symlink" => Ok("symlink"),
"other" | "special" => Ok("special"),
_ => Err(format!("unknown type {s:?} (file, dir, symlink, other)")),
}
}
fn flag_bit(s: &str) -> Option<Flags> {
Some(match s {
"sparse" => inv::FLAG_SPARSE,
"hardlink" | "hardlinked" => inv::FLAG_HARDLINKED,
"error" => inv::FLAG_ERROR,
"mount" => inv::FLAG_MOUNT_POINT,
"incomplete" => inv::FLAG_INCOMPLETE,
"followed" => inv::FLAG_FOLLOWED,
"broken" => inv::FLAG_BROKEN_LINK,
_ => return None,
})
}
/// Splits a leading run of digits and dots from s.
fn split_num(s: &str) -> (&str, &str) {
let i = s.bytes().position(|c| !(c.is_ascii_digit() || c == b'.')).unwrap_or(s.len());
s.split_at(i)
}
/// Parses a size with optional unit. kB/MB/GB/TB are SI (powers of 1000);
/// KiB/MiB/GiB/TiB are IEC (1024). Bare K/M/G/T follow the display setting
/// (textutil::set_si).
pub fn parse_size(s: &str) -> Result<i64, String> {
let (num, unit_raw) = split_num(s);
let Ok(v) = num.parse::<f64>() else { return Err(format!("bad size {s:?}")) };
let bare: f64 = if crate::textutil::si() { 1000.0 } else { 1024.0 };
let m = match unit_raw.trim().to_lowercase().as_str() {
"" | "b" => 1.0,
"k" => bare,
"m" => bare.powi(2),
"g" => bare.powi(3),
"t" => bare.powi(4),
"p" => bare.powi(5),
"kb" => 1e3,
"mb" => 1e6,
"gb" => 1e9,
"tb" => 1e12,
"pb" => 1e15,
"kib" => (1u64 << 10) as f64,
"mib" => (1u64 << 20) as f64,
"gib" => (1u64 << 30) as f64,
"tib" => (1u64 << 40) as f64,
"pib" => (1u64 << 50) as f64,
_ => return Err(format!("unknown size unit {unit_raw:?}")),
};
let r = v * m;
if r > 9e18 {
return Err(format!("size {s:?} too large"));
}
Ok(r as i64)
}
/// Parses durations like 90s, 30min, 12h, 7d, 2w, 6mo, 1y.
pub fn parse_age(s: &str) -> Result<Duration, String> {
let (num, unit) = split_num(s);
let Ok(v) = num.parse::<f64>() else { return Err(format!("bad age {s:?}")) };
const DAY: f64 = 86400.0;
let secs = match unit.to_lowercase().as_str() {
"s" | "sec" => 1.0,
"min" => 60.0,
"h" => 3600.0,
"d" | "" => DAY,
"w" => 7.0 * DAY,
"m" | "mo" => 30.0 * DAY,
"y" => 365.0 * DAY,
_ => return Err(format!("unknown age unit {unit:?} (s, min, h, d, w, mo, y)")),
};
// Saturates where Go's time.Duration would overflow.
Ok(Duration::from_nanos((v * secs * 1e9) as u64))
}
/// Parses "2006-01-02", "2006-01-02T15:04", "2006-01-02 15:04" (local time)
/// or RFC 3339, as Go's time.ParseInLocation with time.Local would, into unix
/// nanoseconds.
fn parse_date(s: &str) -> Option<i64> {
let b = s.as_bytes();
let fixed = |i: usize, n: usize| -> Option<i64> {
let d = b.get(i..i + n)?;
d.iter().all(u8::is_ascii_digit).then(|| d.iter().fold(0, |a, &c| a * 10 + (c - b'0') as i64))
};
let (y, mo, d) = (fixed(0, 4)?, fixed(5, 2)?, fixed(8, 2)?);
if b.get(4) != Some(&b'-') || b.get(7) != Some(&b'-') || !(1..=12).contains(&mo) || d < 1 || d > days_in(y, mo) {
return None;
}
if b.len() == 10 {
return local_nanos(y, mo, d, 0, 0);
}
let sep = *b.get(10)?;
if sep != b'T' && sep != b' ' {
return None;
}
// Go's "15" hour accepts one or two digits.
let mut i = 11;
let hl = if fixed(i, 2).is_some() { 2 } else { 1 };
let h = fixed(i, hl)?;
i += hl;
if b.get(i) != Some(&b':') || h > 23 {
return None;
}
let mi = fixed(i + 1, 2)?;
i += 3;
if mi > 59 {
return None;
}
if i == b.len() {
return local_nanos(y, mo, d, h, mi);
}
// RFC 3339: :05[.frac](Z|±07:00)
if sep != b'T' || b.get(i) != Some(&b':') {
return None;
}
let sec = fixed(i + 1, 2)?;
i += 3;
if sec > 59 {
return None;
}
let mut ns = 0i64;
if matches!(b.get(i), Some(b'.' | b',')) {
let n = b[i + 1..].iter().take_while(|c| c.is_ascii_digit()).count();
if n == 0 {
return None;
}
for k in 0..9 {
ns = ns * 10 + b.get(i + 1 + k).filter(|_| k < n).map_or(0, |c| (c - b'0') as i64);
}
i += 1 + n;
}
let off = match b.get(i)? {
b'Z' => {
i += 1;
0
}
&c @ (b'+' | b'-') => {
let (oh, om) = (fixed(i + 1, 2)?, fixed(i + 4, 2)?);
if b.get(i + 3) != Some(&b':') || oh > 23 || om > 59 {
return None;
}
i += 6;
(oh * 3600 + om * 60) * if c == b'-' { -1 } else { 1 }
}
_ => return None,
};
if i != b.len() {
return None;
}
let secs = days_from_civil(y, mo, d) * 86400 + h * 3600 + mi * 60 + sec - off;
Some(secs * 1_000_000_000 + ns)
}
fn days_in(y: i64, m: i64) -> i64 {
match m {
2 if y % 4 == 0 && (y % 100 != 0 || y % 400 == 0) => 29,
2 => 28,
4 | 6 | 9 | 11 => 30,
_ => 31,
}
}
/// Days since 1970-01-01 of a proleptic Gregorian date.
fn days_from_civil(y: i64, m: i64, d: i64) -> i64 {
let y = if m <= 2 { y - 1 } else { y };
let era = y.div_euclid(400);
let yoe = y - era * 400;
let doy = (153 * (m + if m > 2 { -3 } else { 9 }) + 2) / 5 + d - 1;
let doe = yoe * 365 + yoe / 4 - yoe / 100 + doy;
era * 146097 + doe - 719468
}
fn local_nanos(y: i64, mo: i64, d: i64, h: i64, mi: i64) -> Option<i64> {
let mut tm: libc::tm = unsafe { std::mem::zeroed() };
tm.tm_year = (y - 1900) as i32;
tm.tm_mon = (mo - 1) as i32;
tm.tm_mday = d as i32;
tm.tm_hour = h as i32;
tm.tm_min = mi as i32;
tm.tm_isdst = -1;
let t = unsafe { libc::mktime(&mut tm) };
(t != -1).then(|| t as i64 * 1_000_000_000)
}
rust/src/inventory/category.rs
+134
View File
@@ -0,0 +1,134 @@
use std::collections::HashMap;
use std::sync::OnceLock;
/// Coarse file classification used for colouring and stats.
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Default)]
#[repr(u8)]
pub enum Category {
#[default]
Other,
Image,
Video,
Audio,
Archive,
DiskImage,
Database,
Code,
Document,
Executable,
Log,
Cache,
}
pub const NUM_CATEGORIES: usize = 12;
const CATEGORY_NAMES: [&str; NUM_CATEGORIES] = [
"Other", "Image", "Video", "Audio", "Archive", "Disk image", "Database",
"Source code", "Document", "Executable", "Log", "Cache",
];
const ALL: [Category; NUM_CATEGORIES] = [
Category::Other, Category::Image, Category::Video, Category::Audio, Category::Archive,
Category::DiskImage, Category::Database, Category::Code, Category::Document,
Category::Executable, Category::Log, Category::Cache,
];
impl Category {
pub fn from_u8(v: u8) -> Category {
ALL.get(v as usize).copied().unwrap_or(Category::Other)
}
pub fn all() -> &'static [Category; NUM_CATEGORIES] {
&ALL
}
pub fn name(self) -> &'static str {
CATEGORY_NAMES[self as usize]
}
}
impl std::fmt::Display for Category {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str(self.name())
}
}
/// Resolves a category by (case-insensitive) name or prefix.
pub fn parse_category(s: &str) -> Option<Category> {
let s = s.trim().to_lowercase();
for (i, n) in CATEGORY_NAMES.iter().enumerate() {
let ln = n.to_lowercase();
if ln == s || ln.replace(' ', "") == s || ln.starts_with(&s) && s.len() >= 3 {
return Some(ALL[i]);
}
}
match s.as_str() {
"vm" | "virtual machine" | "disk" => Some(Category::DiskImage),
"db" => Some(Category::Database),
"src" | "source" => Some(Category::Code),
"exe" | "binary" => Some(Category::Executable),
_ => None,
}
}
fn ext_table() -> &'static HashMap<&'static str, Category> {
static T: OnceLock<HashMap<&'static str, Category>> = OnceLock::new();
T.get_or_init(|| {
let mut m = HashMap::new();
let mut add = |c: Category, exts: &'static str| {
for e in exts.split_whitespace() {
m.insert(e, c);
}
};
add(Category::Image, "jpg jpeg png gif bmp tif tiff webp heic heif raw cr2 cr3 nef arw dng svg ico psd xcf avif jxl orf rw2");
add(Category::Video, "mp4 mkv mov avi wmv flv webm m4v mpg mpeg ts m2ts vob 3gp ogv mts");
add(Category::Audio, "mp3 flac wav ogg oga opus m4a aac wma aiff aif alac mid midi");
add(Category::Archive, "zip tar gz tgz bz2 tbz xz txz zst zstd 7z rar lz lz4 lzma cab deb rpm apk jar war cpio pkg snap whl gem");
add(Category::DiskImage, "iso img qcow qcow2 vmdk vdi vhd vhdx hdd ova ovf dmg raw vmem vmsn nvram sav");
add(Category::Database, "db sqlite sqlite3 db3 mdb accdb frm ibd myd myi ldf mdf ndf dbf wal kdbx realm lmdb rdb aof");
add(Category::Code, "c h cc cpp cxx hpp hh go rs py pyc js mjs cjs ts tsx jsx java kt kts scala rb php pl pm sh bash zsh fish lua swift m mm cs fs vb r jl hs ml ex exs erl clj dart sql css scss sass less html htm vue svelte json yaml yml toml xml proto gradle cmake mk ipynb o a lib obj class");
add(Category::Document, "pdf doc docx odt rtf txt md rst tex xls xlsx ods csv tsv ppt pptx odp epub mobi djvu pages numbers key org adoc");
add(Category::Executable, "exe dll so dylib bin msi app elf ko sys efi appimage com");
add(Category::Log, "log journal");
add(Category::Cache, "cache tmp temp swp bak old part crdownload");
m
})
}
/// Classifies a file by its (lower-case) extension and by whether it lives
/// beneath a cache or log directory.
pub fn category_for(ext: &str, in_cache: bool, in_log: bool) -> Category {
let c = ext_table().get(ext).copied();
match c {
_ if in_cache && matches!(c, None | Some(Category::Other) | Some(Category::Code)) => Category::Cache,
_ if in_log && matches!(c, None | Some(Category::Archive) | Some(Category::Other)) => Category::Log,
Some(c) => c,
None => Category::Other,
}
}
/// Reports whether a directory path contains a cache or log component. It is
/// evaluated once per directory, not per file.
pub fn path_hints(path: &[u8]) -> (bool, bool) {
let (mut in_cache, mut in_log) = (false, false);
for part in path.split(|&b| b == b'/' || b == b'\\') {
if part.is_empty() || part.len() > 12 {
continue;
}
match part.to_ascii_lowercase().as_slice() {
b"cache" | b".cache" | b"caches" | b"__pycache__" | b".npm" | b".gradle" | b"inetcache" | b"temp" | b"tmp" => in_cache = true,
b"log" | b"logs" | b".logs" | b"journal" => in_log = true,
_ => {}
}
}
(in_cache, in_log)
}
/// Returns the lower-case extension of name without the dot ("" if none, or
/// if the name is a dotfile like ".bashrc").
pub fn ext(name: &[u8]) -> String {
match name.iter().rposition(|&b| b == b'.') {
Some(i) if i > 0 && i != name.len() - 1 && name.len() - i <= 16 => {
String::from_utf8_lossy(&name[i + 1..]).to_lowercase()
}
_ => String::new(),
}
}
rust/src/inventory/mod.rs
+481
View File
@@ -0,0 +1,481 @@
//! The in-memory filesystem model: an append-only arena of nodes addressed
//! by stable NodeIds, with incrementally maintained directory aggregates.
//!
//! Concurrency: a Tree has exactly one writer (the scan controller or a
//! snapshot loader), shared as `Arc<RwLock<Tree>>`. Nodes are never removed,
//! so a NodeId stays valid for the Tree's lifetime.
mod category;
mod query;
mod stats;
pub use category::*;
pub use query::*;
pub use stats::*;
use std::collections::HashMap;
use std::ffi::OsStr;
use std::os::unix::ffi::OsStrExt;
use std::path::PathBuf;
/// Addresses a node within one Tree. The root is always 0.
pub type NodeId = u32;
/// The nil NodeId.
pub const NO_NODE: NodeId = u32::MAX;
#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
#[repr(u8)]
pub enum Kind {
#[default]
File,
Dir,
Symlink,
Other, // devices, sockets, fifos, reparse points
}
impl Kind {
pub fn from_u8(v: u8) -> Kind {
[Kind::File, Kind::Dir, Kind::Symlink, Kind::Other][(v & 3) as usize]
}
pub fn name(self) -> &'static str {
["File", "Directory", "Symlink", "Special"][self as usize]
}
}
/// Per-node facts (bit set).
pub type Flags = u16;
pub const FLAG_HARDLINK_DUP: Flags = 1 << 0; // additional link to an inode counted elsewhere
pub const FLAG_MOUNT_POINT: Flags = 1 << 1; // directory on a different device than its parent
pub const FLAG_VIRTUAL_FS: Flags = 1 << 2; // virtual filesystem, not descended
pub const FLAG_SKIPPED_FS: Flags = 1 << 3; // other filesystem, not descended (--one-file-system)
pub const FLAG_SPARSE: Flags = 1 << 4; // allocated < logical (sparse or compressed)
pub const FLAG_ERROR: Flags = 1 << 5; // stat or read failed
pub const FLAG_INCOMPLETE: Flags = 1 << 6; // directory contents not (fully) read
pub const FLAG_SCANNED: Flags = 1 << 7; // directory fully read
pub const FLAG_LOOP: Flags = 1 << 8; // directory already visited via another path
pub const FLAG_FOLLOWED: Flags = 1 << 9; // reached through a followed symlink
pub const FLAG_ALLOC_UNKNOWN: Flags = 1 << 10; // platform cannot report allocated size
pub const FLAG_BROKEN_LINK: Flags = 1 << 11; // symlink target does not exist
pub const FLAG_HARDLINKED: Flags = 1 << 12; // regular file with link count > 1
pub const FLAG_DELETED: Flags = 1 << 13; // moved to trash from the UI
/// One filesystem object. Sizes are own sizes; tot_* fields are aggregates
/// including the node itself and (for directories) everything beneath it.
#[derive(Clone, Debug)]
pub struct Node {
pub parent: NodeId,
pub first_child: NodeId,
pub next_sibling: NodeId,
dir: u32, // index into dir side table (directories only)
/// Single path component (raw bytes); the root holds the full root path.
pub name: Box<[u8]>,
pub size: i64, // own logical bytes
pub alloc: i64, // own allocated bytes
pub tot_size: i64, // aggregates (hard-link duplicates contribute 0)
pub tot_alloc: i64,
pub mtime: i64, // unix nanoseconds
pub files: u32, // recursive counts beneath (dirs excludes self)
pub dirs: u32,
pub errors: u32, // recursive error count beneath and including self
pub mode: u32, // Go fs.FileMode bit layout (see platform::mode)
pub uid: u32,
pub gid: u32,
pub nlink: u32,
pub ext: u16,
pub flags: Flags,
pub kind: Kind,
pub cat: Category,
}
impl Node {
pub fn is_dir(&self) -> bool {
self.kind == Kind::Dir
}
pub fn has(&self, f: Flags) -> bool {
self.flags & f != 0
}
/// The name as (lossy) UTF-8, unsanitised.
pub fn name_str(&self) -> std::borrow::Cow<'_, str> {
String::from_utf8_lossy(&self.name)
}
}
/// An aggregate change applied to a node and all its ancestors.
#[derive(Clone, Copy, Default, PartialEq, Eq, Debug)]
pub struct Delta {
pub size: i64,
pub alloc: i64,
pub files: i64,
pub dirs: i64,
pub errors: i64,
pub cat: [i64; NUM_CATEGORIES],
}
const CHUNK_BITS: u32 = 16;
const CHUNK_SIZE: usize = 1 << CHUNK_BITS;
/// A growable array that never moves existing elements, so growth never
/// doubles peak memory.
#[derive(Clone)]
struct Chunked<T> {
c: Vec<Vec<T>>,
n: usize,
}
impl<T> Chunked<T> {
fn new() -> Self {
Chunked { c: Vec::new(), n: 0 }
}
fn add(&mut self, v: T) -> u32 {
if self.n & (CHUNK_SIZE - 1) == 0 && self.n >> CHUNK_BITS == self.c.len() {
self.c.push(Vec::with_capacity(CHUNK_SIZE));
}
self.c[self.n >> CHUNK_BITS].push(v);
self.n += 1;
(self.n - 1) as u32
}
#[inline]
fn at(&self, i: u32) -> &T {
&self.c[(i >> CHUNK_BITS) as usize][i as usize & (CHUNK_SIZE - 1)]
}
#[inline]
fn at_mut(&mut self, i: u32) -> &mut T {
&mut self.c[(i >> CHUNK_BITS) as usize][i as usize & (CHUNK_SIZE - 1)]
}
}
/// The inventory for one scan root.
#[derive(Clone)]
pub struct Tree {
nodes: Chunked<Node>,
dirs: Chunked<[i64; NUM_CATEGORIES]>,
exts: Vec<String>,
ext_idx: HashMap<String, u16>,
pub stats: Stats,
}
impl Tree {
/// Creates a tree whose root has the given full path and kind.
pub fn new(root_path: &[u8], kind: Kind) -> Tree {
let mut t = Tree {
nodes: Chunked::new(),
dirs: Chunked::new(),
exts: vec![String::new()],
ext_idx: HashMap::from([(String::new(), 0)]),
stats: Stats::default(),
};
t.stats.root = root_path.to_vec();
t.stats.start = std::time::SystemTime::now();
t.add(NO_NODE, root_path, kind);
t
}
pub fn len(&self) -> usize {
self.nodes.n
}
pub fn is_empty(&self) -> bool {
self.nodes.n == 0
}
#[inline]
pub fn node(&self, id: NodeId) -> &Node {
self.nodes.at(id)
}
#[inline]
pub fn node_mut(&mut self, id: NodeId) -> &mut Node {
self.nodes.at_mut(id)
}
pub fn root(&self) -> NodeId {
0
}
/// Appends a child node and links it under parent. It does not touch
/// aggregates; use propagate.
pub fn add(&mut self, parent: NodeId, name: &[u8], kind: Kind) -> NodeId {
let mut n = Node {
parent,
first_child: NO_NODE,
next_sibling: NO_NODE,
dir: 0,
name: name.into(),
size: 0, alloc: 0, tot_size: 0, tot_alloc: 0, mtime: 0,
files: 0, dirs: 0, errors: 0, mode: 0, uid: 0, gid: 0, nlink: 0,
ext: 0, flags: 0, kind, cat: Category::Other,
};
if kind == Kind::Dir {
n.dir = self.dirs.add([0; NUM_CATEGORIES]);
} else {
n.ext = self.intern_ext(&ext(name));
}
let id = self.nodes.add(n);
if parent != NO_NODE {
let first = self.node(parent).first_child;
self.node_mut(id).next_sibling = first;
self.node_mut(parent).first_child = id;
}
id
}
/// Interns an extension string; used by loaders rebuilding a tree.
pub fn intern_ext(&mut self, e: &str) -> u16 {
if let Some(&i) = self.ext_idx.get(e) {
return i;
}
if self.exts.len() >= (1 << 16) - 1 {
return 0;
}
self.exts.push(e.to_string());
let i = (self.exts.len() - 1) as u16;
self.ext_idx.insert(e.to_string(), i);
i
}
/// The extension string for a node ("" if none).
pub fn ext_name(&self, n: &Node) -> &str {
&self.exts[n.ext as usize]
}
pub fn ext_count(&self) -> usize {
self.exts.len()
}
pub fn ext_by_index(&self, i: usize) -> &str {
&self.exts[i]
}
/// Per-category allocated bytes beneath a directory.
pub fn cat_sizes(&self, id: NodeId) -> Option<&[i64; NUM_CATEGORIES]> {
let n = self.node(id);
(n.kind == Kind::Dir).then(|| self.dirs.at(n.dir))
}
/// Adds d to id and every ancestor. Cost is O(depth); callers batch many
/// entries into one Delta.
pub fn propagate(&mut self, mut id: NodeId, d: &Delta) {
while id != NO_NODE {
let n = self.nodes.at_mut(id);
n.tot_size += d.size;
n.tot_alloc += d.alloc;
n.files = add_u32(n.files, d.files);
n.dirs = add_u32(n.dirs, d.dirs);
n.errors = add_u32(n.errors, d.errors);
let (is_dir, dir, parent) = (n.kind == Kind::Dir, n.dir, n.parent);
if is_dir {
let cs = self.dirs.at_mut(dir);
for (c, v) in cs.iter_mut().zip(d.cat) {
*c += v;
}
}
id = parent;
}
}
/// Iterates the children of id (in reverse insertion order).
pub fn children(&self, id: NodeId) -> Children<'_> {
Children { t: self, cur: self.node(id).first_child }
}
pub fn child_count(&self, id: NodeId) -> usize {
self.children(id).count()
}
/// Reconstructs the full path of id as raw bytes.
pub fn path_bytes(&self, mut id: NodeId) -> Vec<u8> {
let mut parts: Vec<&[u8]> = Vec::new();
while id != NO_NODE {
let n = self.node(id);
parts.push(&n.name);
id = n.parent;
}
let mut out = Vec::with_capacity(parts.iter().map(|p| p.len() + 1).sum());
for p in parts.iter().rev() {
if !out.is_empty() && out.last() != Some(&b'/') {
out.push(b'/');
}
out.extend_from_slice(p);
}
out
}
/// Reconstructs the full path of id.
pub fn path(&self, id: NodeId) -> PathBuf {
PathBuf::from(OsStr::from_bytes(&self.path_bytes(id)))
}
/// The full path as (lossy) UTF-8, unsanitised.
pub fn path_string(&self, id: NodeId) -> String {
String::from_utf8_lossy(&self.path_bytes(id)).into_owned()
}
/// The chain root..id inclusive.
pub fn ancestors(&self, mut id: NodeId) -> Vec<NodeId> {
let mut out = Vec::new();
while id != NO_NODE {
out.push(id);
id = self.node(id).parent;
}
out.reverse();
out
}
/// Reports whether a is id or an ancestor of id.
pub fn is_ancestor(&self, a: NodeId, mut id: NodeId) -> bool {
while id != NO_NODE {
if id == a {
return true;
}
id = self.node(id).parent;
}
false
}
/// Number of ancestors of id.
pub fn depth(&self, id: NodeId) -> usize {
let mut d = 0;
let mut id = self.node(id).parent;
while id != NO_NODE {
d += 1;
id = self.node(id).parent;
}
d
}
/// Rebuilds all aggregates bottom-up. Relies on a parent's ID being
/// smaller than its children's, which both the scanner and the snapshot
/// loader guarantee. Used after loading a snapshot.
pub fn recompute(&mut self) {
for i in 0..self.len() as NodeId {
let n = self.nodes.at_mut(i);
n.tot_size = 0;
n.tot_alloc = 0;
n.files = 0;
n.dirs = 0;
n.errors = (n.flags & FLAG_ERROR != 0) as u32;
if n.flags & FLAG_HARDLINK_DUP == 0 {
n.tot_size = n.size;
n.tot_alloc = n.alloc;
}
if n.kind == Kind::Dir {
let d = n.dir;
*self.dirs.at_mut(d) = [0; NUM_CATEGORIES];
}
}
// Sums saturate: snapshot data is untrusted and must not wrap to
// negative totals.
for i in (1..self.len() as NodeId).rev() {
let n = self.nodes.at(i).clone_shallow();
let p = self.nodes.at_mut(n.parent);
p.tot_size = sat_add(p.tot_size, n.tot_size);
p.tot_alloc = sat_add(p.tot_alloc, n.tot_alloc);
p.errors = add_u32(p.errors, n.errors as i64);
let pdir = p.dir;
if n.kind == Kind::Dir {
p.files = add_u32(p.files, n.files as i64);
p.dirs = add_u32(p.dirs, n.dirs as i64 + 1);
let child = *self.dirs.at(n.dir);
let cs = self.dirs.at_mut(pdir);
for (c, v) in cs.iter_mut().zip(child) {
*c = sat_add(*c, v);
}
} else {
p.files = add_u32(p.files, 1);
if n.flags & FLAG_HARDLINK_DUP == 0 {
let cs = self.dirs.at_mut(pdir);
cs[n.cat as usize] = sat_add(cs[n.cat as usize], n.alloc);
}
}
}
}
}
/// The numeric fields recompute needs, without cloning the name.
struct Shallow {
parent: NodeId,
dir: u32,
tot_size: i64,
tot_alloc: i64,
alloc: i64,
files: u32,
dirs: u32,
errors: u32,
flags: Flags,
kind: Kind,
cat: Category,
}
impl Node {
fn clone_shallow(&self) -> Shallow {
Shallow {
parent: self.parent, dir: self.dir, tot_size: self.tot_size, tot_alloc: self.tot_alloc,
alloc: self.alloc, files: self.files, dirs: self.dirs, errors: self.errors,
flags: self.flags, kind: self.kind, cat: self.cat,
}
}
}
pub struct Children<'a> {
t: &'a Tree,
cur: NodeId,
}
impl<'a> Iterator for Children<'a> {
type Item = (NodeId, &'a Node);
fn next(&mut self) -> Option<Self::Item> {
if self.cur == NO_NODE {
return None;
}
let id = self.cur;
let n = self.t.node(id);
self.cur = n.next_sibling;
Some((id, n))
}
}
/// Adds non-negative i64s, saturating at the maximum.
pub fn sat_add(a: i64, b: i64) -> i64 {
if b > 0 && a > i64::MAX - b {
return i64::MAX;
}
a + b
}
fn add_u32(a: u32, d: i64) -> u32 {
(a as i64 + d).clamp(0, u32::MAX as i64) as u32
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn topk_and_recompute() {
let mut tr = Tree::new(b"/r", Kind::Dir);
let d = tr.add(0, b"d", Kind::Dir);
for i in 0..100 {
let id = tr.add(d, b"f", Kind::File);
let n = tr.node_mut(id);
n.size = i;
n.alloc = i;
}
tr.recompute();
assert_eq!(tr.node(0).tot_size, 4950);
assert_eq!((tr.node(0).files, tr.node(0).dirs), (100, 1));
let top = tr.top(0, 3, |n| n.kind == Kind::File, |n| n.size);
assert_eq!(top.len(), 3);
assert_eq!(tr.node(top[0]).size, 99);
assert_eq!(tr.node(top[2]).size, 97);
assert_eq!(tr.path_string(top[0]), "/r/d/f");
}
#[test]
fn ext_and_category() {
for (input, want) in [("a.QCOW2", "qcow2"), (".bashrc", ""), ("noext", ""), ("x.tar.gz", "gz"), ("trail.", "")] {
assert_eq!(ext(input.as_bytes()), want, "{input}");
}
assert_eq!(category_for("qcow2", false, false), Category::DiskImage);
assert_eq!(category_for("bin", true, false), Category::Executable);
assert_eq!(category_for("", true, false), Category::Cache);
}
}
rust/src/inventory/query.rs
+141
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@@ -0,0 +1,141 @@
use super::*;
use std::cmp::Reverse;
use std::collections::BinaryHeap;
/// Which size drives layout and sorting.
#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
pub enum SizeMode {
#[default]
Allocated, // disk usage
Logical, // apparent size
}
impl SizeMode {
pub fn name(self) -> &'static str {
match self {
SizeMode::Logical => "logical",
SizeMode::Allocated => "allocated",
}
}
}
impl Node {
/// The aggregate size in the given mode.
#[inline]
pub fn total(&self, m: SizeMode) -> i64 {
match m {
SizeMode::Logical => self.tot_size,
SizeMode::Allocated => self.tot_alloc,
}
}
/// The node's own size in the given mode.
#[inline]
pub fn own(&self, m: SizeMode) -> i64 {
match m {
SizeMode::Logical => self.size,
SizeMode::Allocated => self.alloc,
}
}
}
/// Keeps the k entries with the largest keys (ties: smaller id wins); O(n log k).
pub struct TopK {
k: usize,
// Min-heap on (key, Reverse(id)): the root is the weakest entry.
h: BinaryHeap<Reverse<(i64, Reverse<NodeId>)>>,
}
impl TopK {
pub fn new(k: usize) -> TopK {
TopK { k, h: BinaryHeap::with_capacity(k.min(1 << 16)) }
}
pub fn offer(&mut self, id: NodeId, key: i64) {
if self.k == 0 {
return;
}
let e = Reverse((key, Reverse(id)));
if self.h.len() < self.k {
self.h.push(e);
} else if let Some(mut top) = self.h.peek_mut() {
if e < *top {
*top = e;
}
}
}
/// The collected IDs, largest key first (ties by ID).
pub fn sorted(self) -> Vec<NodeId> {
// into_sorted_vec is ascending in Reverse order = descending key.
self.h.into_sorted_vec().into_iter().map(|Reverse((_, Reverse(id)))| id).collect()
}
}
impl Tree {
/// Visits id and all its descendants depth-first (iteratively). fn
/// returns false to skip a node's children.
pub fn walk(&self, id: NodeId, mut f: impl FnMut(NodeId, &Node) -> bool) {
let mut stack = vec![id];
while let Some(cur) = stack.pop() {
let n = self.node(cur);
if !f(cur, n) {
continue;
}
stack.extend(self.children(cur).map(|(c, _)| c));
}
}
/// The k nodes beneath (and including) root with the largest key,
/// considering only nodes accepted by keep.
pub fn top(&self, root: NodeId, k: usize, keep: impl Fn(&Node) -> bool, key: impl Fn(&Node) -> i64) -> Vec<NodeId> {
let mut tk = TopK::new(k);
self.walk(root, |id, n| {
if keep(n) {
tk.offer(id, key(n));
}
true
});
tk.sorted()
}
/// The children of id ordered by size descending (ties by ID).
pub fn sorted_children(&self, id: NodeId, m: SizeMode) -> Vec<NodeId> {
let mut out: Vec<(i64, NodeId)> = self.children(id).map(|(c, n)| (n.total(m), c)).collect();
out.sort_unstable_by(|a, b| b.0.cmp(&a.0).then(a.1.cmp(&b.1)));
out.into_iter().map(|(_, c)| c).collect()
}
/// Aggregates file statistics by extension beneath root.
pub fn ext_stats(&self, root: NodeId) -> Vec<ExtStat> {
let mut stats = vec![ExtStat::default(); self.ext_count()];
self.walk(root, |_, n| {
if n.kind == Kind::File && n.flags & FLAG_HARDLINK_DUP == 0 {
let s = &mut stats[n.ext as usize];
s.count += 1;
s.size += n.size;
s.alloc += n.alloc;
}
true
});
stats
.into_iter()
.enumerate()
.filter(|(_, s)| s.count > 0)
.map(|(i, mut s)| {
s.ext = self.exts[i].clone();
s.cat = category_for(&s.ext, false, false);
s
})
.collect()
}
}
/// Summarises one extension.
#[derive(Clone, Default, Debug)]
pub struct ExtStat {
pub ext: String,
pub cat: Category,
pub count: i64,
pub size: i64, // logical
pub alloc: i64,
}
rust/src/inventory/stats.rs
+124
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@@ -0,0 +1,124 @@
use super::NodeId;
use std::io;
use std::time::{Duration, SystemTime};
/// Classifies scan errors for reporting.
#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
#[repr(u8)]
pub enum ErrKind {
Permission,
Vanished,
Io,
Loop,
#[default]
Other,
}
pub const NUM_ERR_KINDS: usize = 5;
impl ErrKind {
pub fn from_u8(v: u8) -> ErrKind {
[ErrKind::Permission, ErrKind::Vanished, ErrKind::Io, ErrKind::Loop, ErrKind::Other]
.get(v as usize)
.copied()
.unwrap_or(ErrKind::Other)
}
pub fn name(self) -> &'static str {
["Permission denied", "Vanished during scan", "I/O error", "Symlink loop", "Other error"][self as usize]
}
}
/// Maps an OS error to an ErrKind.
pub fn classify(err: &io::Error) -> ErrKind {
match err.raw_os_error() {
Some(libc::EACCES) | Some(libc::EPERM) => ErrKind::Permission,
Some(libc::ENOENT) => ErrKind::Vanished,
Some(libc::ELOOP) => ErrKind::Loop,
Some(libc::EIO) => ErrKind::Io,
_ => match err.kind() {
io::ErrorKind::PermissionDenied => ErrKind::Permission,
io::ErrorKind::NotFound => ErrKind::Vanished,
_ => ErrKind::Other,
},
}
}
/// One recorded scan error.
#[derive(Clone, Debug, Default)]
pub struct ErrorRecord {
pub node: NodeId, // node the error is attached to (the directory for listing failures)
pub name: Vec<u8>, // entry name when no node was created (e.g. vanished)
pub kind: ErrKind,
pub msg: String,
}
/// Caps the detailed error list; counts are always exact.
pub const MAX_ERROR_RECORDS: usize = 100_000;
/// Describes a scan as a whole.
#[derive(Clone, Debug)]
pub struct Stats {
pub root: Vec<u8>,
pub start: SystemTime,
pub end: Option<SystemTime>,
pub complete: bool, // scan finished (possibly with errors)
pub cancelled: bool,
pub files: i64,
pub dirs: i64,
pub symlinks: i64,
pub others: i64,
pub err_counts: [i64; NUM_ERR_KINDS],
pub errors: Vec<ErrorRecord>,
pub excluded: i64,
pub skipped_mounts: i64,
pub virtual_skipped: i64,
pub loops_skipped: i64,
pub broken_links: i64,
pub hardlink_dups: i64,
pub unscanned: i64, // directories never read because the scan was cancelled
pub excludes: Vec<String>,
pub one_file_system: bool,
pub follow: String,
pub workers: usize,
pub from_snapshot: String,
}
impl Default for Stats {
fn default() -> Self {
Stats {
root: Vec::new(), start: SystemTime::now(), end: None, complete: false, cancelled: false,
files: 0, dirs: 0, symlinks: 0, others: 0, err_counts: [0; NUM_ERR_KINDS], errors: Vec::new(),
excluded: 0, skipped_mounts: 0, virtual_skipped: 0, loops_skipped: 0, broken_links: 0,
hardlink_dups: 0, unscanned: 0, excludes: Vec::new(), one_file_system: false,
follow: String::new(), workers: 0, from_snapshot: String::new(),
}
}
}
impl Stats {
pub fn total_errors(&self) -> i64 {
self.err_counts.iter().sum()
}
/// Records an error (the detailed list is capped).
pub fn add_error(&mut self, r: ErrorRecord) {
self.err_counts[r.kind as usize] += 1;
if self.errors.len() < MAX_ERROR_RECORDS {
self.errors.push(r);
}
}
/// The scan duration so far (or total once finished).
pub fn elapsed(&self) -> Duration {
let end = self.end.unwrap_or_else(SystemTime::now);
end.duration_since(self.start).unwrap_or_default()
}
/// Whether totals may under-count real usage.
pub fn incomplete(&self) -> bool {
!self.complete || self.cancelled || self.total_errors() > 0 || self.unscanned > 0
}
}
rust/src/lib.rs
+19
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@@ -0,0 +1,19 @@
//! mapsize: interactive terminal disk usage analyser (Rust port).
pub mod app;
pub mod brand;
pub mod cancel;
pub mod config;
pub mod duplicate;
pub mod export;
pub mod filter;
pub mod inventory;
pub mod platform;
pub mod scan;
pub mod snapshot;
pub mod textutil;
pub mod treemap;
pub mod tui;
/// Boxed error used across mode boundaries.
pub type Error = Box<dyn std::error::Error + Send + Sync>;
rust/src/main.rs
+189
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@@ -0,0 +1,189 @@
//! mapsize: interactive terminal disk usage analyser.
use mapsize::app::{self, Config};
use mapsize::inventory::SizeMode;
use mapsize::{brand, config, scan, snapshot, textutil};
use std::path::Path;
/// Flags taking a value (Go's flag package: `-f v`, `-f=v`, `--f v`, `--f=v`).
const VALUE_FLAGS: &[&str] = &[
"workers", "follow-symlinks", "depth", "top", "largest-files", "save", "snapshot", "load", "scan",
"theme", "color", "log", "log-level", "exclude",
];
/// Boolean flags (`-f`, `-f=false`).
const BOOL_FLAGS: &[&str] = &["one-file-system", "x", "read-only", "no-ui", "json", "csv", "duplicates", "compare", "si", "apparent", "no-mouse", "version"];
fn usage() {
let n = brand::NAME;
let e = brand::SNAPSHOT_EXT;
eprint!(
"{n} — interactive terminal disk usage analyser
Usage:
{n} [flags] [PATH] scan PATH (default .) interactively
{n} [flags] SNAPSHOT{e} open a saved snapshot
{n} --compare OLD NEW compare two snapshots
{n} PATH --top 50 | --json | --csv | --no-ui --save FILE
Flags:
--workers MODE concurrency: conservative, balanced, aggressive or a number
--follow-symlinks MODE none, same-filesystem or all
-x, --one-file-system do not cross filesystem boundaries
--exclude PATTERN exclude PATTERN (glob on name, or path prefix if it contains a separator); repeatable
--read-only disable all modifying actions
--no-ui scan without the interactive interface and print a summary
--json, --csv print the inventory as JSON / CSV
--depth N maximum depth for --json/--csv (-1 = unlimited)
--top N print the N largest entries of the root
--largest-files N print the N largest files
--duplicates find duplicate files (non-interactive)
--save FILE save a snapshot to FILE after scanning (alias --snapshot)
--load FILE open a saved snapshot FILE instead of scanning
--scan PATH path to scan (alternative to a positional argument)
--compare compare two snapshots: --compare OLD NEW
--si use SI units (kB, MB) instead of IEC (KiB, MiB)
--apparent size by logical (apparent) size instead of disk usage
--theme NAME colour theme: default, dark, high-contrast, mono
--color MODE colour support: auto, truecolor, 256, 16, none
--no-mouse disable mouse support
--log FILE write a debug log to FILE
--log-level LEVEL log level: error, warn, info, debug, trace
--version print version and exit
"
);
}
fn main() {
std::process::exit(run(std::env::args_os().skip(1).map(|a| a.to_string_lossy().into_owned()).collect()));
}
fn fail(msg: impl std::fmt::Display) -> i32 {
eprintln!("{}: {msg}", brand::NAME);
2
}
fn run(args: Vec<String>) -> i32 {
let (settings, cfg_err) = config::load();
let mut vals: std::collections::HashMap<&str, String> = std::collections::HashMap::new();
let mut bools: std::collections::HashMap<&str, bool> = std::collections::HashMap::new();
let mut excludes = settings.excludes.clone();
let mut positional = Vec::new();
let mut it = args.into_iter();
while let Some(a) = it.next() {
if a == "--" {
positional.extend(it.by_ref());
break;
}
let Some(flag) = a.strip_prefix("--").or_else(|| a.strip_prefix('-')).filter(|f| !f.is_empty() && a != "-") else {
positional.push(a);
continue;
};
let (name, inline) = match flag.split_once('=') {
Some((n, v)) => (n, Some(v.to_string())),
None => (flag, None),
};
if name == "h" || name == "help" {
usage();
return 0;
}
if let Some(&n) = BOOL_FLAGS.iter().find(|&&f| f == name) {
match inline.as_deref().map(str::parse::<bool>) {
None => bools.insert(n, true),
Some(Ok(v)) => bools.insert(n, v),
Some(Err(_)) => return fail(format!("invalid boolean value {:?} for -{n}", inline.unwrap())),
};
} else if let Some(&n) = VALUE_FLAGS.iter().find(|&&f| f == name) {
let Some(v) = inline.or_else(|| it.next()) else { return fail(format!("flag needs an argument: -{n}")) };
if n == "exclude" {
excludes.push(v);
} else {
vals.insert(n, v);
}
} else {
usage();
return fail(format!("flag provided but not defined: -{name}"));
}
}
let b = |n: &str| bools.get(n).copied();
let v = |n: &str| vals.get(n).cloned();
let int = |n: &str, d: i64| -> Result<i64, String> {
v(n).map_or(Ok(d), |s| s.parse().map_err(|_| format!("invalid value {s:?} for flag -{n}: parse error")))
};
if b("version") == Some(true) {
println!("{} {} ({}/{})", brand::NAME, brand::VERSION, std::env::consts::OS, std::env::consts::ARCH);
return 0;
}
if let Some(e) = cfg_err {
eprintln!("{}: warning: config: {e} (using defaults)", brand::NAME);
}
textutil::set_si(b("si").unwrap_or(settings.units == "si"));
if let Some(l) = v("log-level") {
if !["error", "warn", "info", "debug", "trace"].contains(&l.as_str()) {
return fail(format!("invalid --log-level {l:?}"));
}
}
// ponytail: --log is accepted for CLI compatibility; the Rust port has no debug logging yet.
let (depth, top, largest) = match (int("depth", -1), int("top", 0), int("largest-files", 0)) {
(Ok(d), Ok(t), Ok(l)) => (d, t.max(0) as usize, l.max(0) as usize),
(Err(e), _, _) | (_, Err(e), _) | (_, _, Err(e)) => return fail(e),
};
let mut cfg = Config {
no_ui: b("no-ui").unwrap_or(false),
json: b("json").unwrap_or(false),
csv: b("csv").unwrap_or(false),
depth,
top,
largest_files: largest,
duplicates: b("duplicates").unwrap_or(false),
read_only: b("read-only").unwrap_or(false),
theme: v("theme").unwrap_or_else(|| settings.theme.clone()),
mouse: !b("no-mouse").unwrap_or(!settings.mouse),
color: v("color").unwrap_or_else(|| "auto".into()),
load: v("load").unwrap_or_default(),
save: v("save").or_else(|| v("snapshot")).unwrap_or_default(),
size_mode: if b("apparent").unwrap_or(settings.size_mode == "logical") { SizeMode::Logical } else { SizeMode::Allocated },
..Config::new(settings.clone())
};
if let Some(p) = v("scan") {
positional.insert(0, p);
}
if b("compare") == Some(true) {
if positional.len() != 2 {
return fail("--compare needs exactly two snapshot files");
}
cfg.compare = Some((positional[0].clone(), positional[1].clone()));
} else {
if positional.len() > 1 {
return fail("only one path may be scanned at a time");
}
if positional.len() == 1 && cfg.load.is_empty() && snapshot::is_snapshot(Path::new(&positional[0])) {
cfg.load = positional.remove(0);
} else {
cfg.paths = positional;
}
}
let workers = match scan::workers(&v("workers").unwrap_or_else(|| settings.workers.clone())) {
Ok(w) => w,
Err(e) => return fail(e),
};
let follow = match scan::parse_follow(&v("follow-symlinks").unwrap_or_else(|| settings.follow_symlinks.clone())) {
Ok(f) => f,
Err(e) => return fail(e),
};
cfg.scan_opts = scan::Options {
workers,
follow,
one_file_system: b("one-file-system").unwrap_or(settings.one_file_system) || b("x").unwrap_or(false),
excludes,
..Default::default()
};
match app::run(cfg) {
Ok(()) => 0,
Err(e) => {
eprintln!("{}: {}", brand::NAME, textutil::sanitize(&e.to_string()));
1
}
}
}
rust/src/platform.rs
+885
View File
@@ -0,0 +1,885 @@
//! OS-specific filesystem metadata and file operations (Unix; Linux first).
//! Nothing else in the program calls libc for filesystem work.
use std::collections::HashMap;
use std::ffi::{CStr, CString, OsStr};
use std::fs::File;
use std::io::{self, Write};
use std::os::fd::{AsRawFd, FromRawFd, OwnedFd, RawFd};
use std::os::unix::ffi::OsStrExt;
use std::os::unix::fs::{MetadataExt, OpenOptionsExt};
use std::path::{Path, PathBuf};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Mutex;
/// File mode bits in Go's io/fs.FileMode layout. Kept so snapshots stay
/// byte-compatible with the Go implementation.
pub mod mode {
pub const DIR: u32 = 1 << 31;
pub const APPEND: u32 = 1 << 30;
pub const EXCLUSIVE: u32 = 1 << 29;
pub const TEMPORARY: u32 = 1 << 28;
pub const SYMLINK: u32 = 1 << 27;
pub const DEVICE: u32 = 1 << 26;
pub const NAMED_PIPE: u32 = 1 << 25;
pub const SOCKET: u32 = 1 << 24;
pub const SETUID: u32 = 1 << 23;
pub const SETGID: u32 = 1 << 22;
pub const CHAR_DEVICE: u32 = 1 << 21;
pub const STICKY: u32 = 1 << 20;
pub const IRREGULAR: u32 = 1 << 19;
pub const TYPE: u32 = DIR | SYMLINK | NAMED_PIPE | SOCKET | DEVICE | CHAR_DEVICE | IRREGULAR;
pub const PERM: u32 = 0o777;
pub fn is_dir(m: u32) -> bool {
m & DIR != 0
}
pub fn is_regular(m: u32) -> bool {
m & TYPE == 0
}
pub fn is_symlink(m: u32) -> bool {
m & SYMLINK != 0
}
/// Formats like Go's FileMode.String, e.g. "drwxr-xr-x".
pub fn string(m: u32) -> String {
const STR: &[u8] = b"dalTLDpSugct?";
let mut out = String::with_capacity(12);
for (i, &c) in STR.iter().enumerate() {
if m & (1 << (31 - i)) != 0 {
out.push(c as char);
}
}
if out.is_empty() {
out.push('-');
}
for (i, c) in "rwxrwxrwx".chars().enumerate() {
out.push(if m & (1 << (8 - i)) != 0 { c } else { '-' });
}
out
}
}
/// Converts a Unix st_mode to the Go FileMode layout.
pub fn mode_from_unix(m: u32) -> u32 {
let mut out = m & 0o777;
out |= match m & libc::S_IFMT {
libc::S_IFDIR => mode::DIR,
libc::S_IFLNK => mode::SYMLINK,
libc::S_IFIFO => mode::NAMED_PIPE,
libc::S_IFSOCK => mode::SOCKET,
libc::S_IFCHR => mode::DEVICE | mode::CHAR_DEVICE,
libc::S_IFBLK => mode::DEVICE,
_ => 0,
};
if m & libc::S_ISUID != 0 {
out |= mode::SETUID;
}
if m & libc::S_ISGID != 0 {
out |= mode::SETGID;
}
if m & libc::S_ISVTX != 0 {
out |= mode::STICKY;
}
out
}
/// Metadata of one directory entry.
#[derive(Debug, Default)]
pub struct Meta {
pub name: Vec<u8>,
pub mode: u32, // Go FileMode layout
pub size: i64,
pub alloc: i64,
pub alloc_known: bool,
pub mtime: i64, // unix nanoseconds
pub btime: i64, // birth time, 0 if unknown
pub uid: u32,
pub gid: u32,
pub nlink: u32,
pub dev: u64,
pub ino: u64,
pub has_ino: bool,
pub err: Option<io::Error>, // stat failed; only name is valid
}
fn cstr(b: &[u8]) -> io::Result<CString> {
CString::new(b).map_err(|_| io::Error::from_raw_os_error(libc::EINVAL))
}
fn cvt(r: libc::c_int) -> io::Result<libc::c_int> {
if r < 0 {
Err(io::Error::last_os_error())
} else {
Ok(r)
}
}
fn open_dir(path: &[u8]) -> io::Result<OwnedFd> {
let c = cstr(path)?;
let fd = cvt(unsafe { libc::open(c.as_ptr(), libc::O_RDONLY | libc::O_DIRECTORY | libc::O_CLOEXEC) })?;
Ok(unsafe { OwnedFd::from_raw_fd(fd) })
}
#[cfg(target_os = "linux")]
static NO_STATX: AtomicBool = AtomicBool::new(false);
#[cfg(target_os = "linux")]
fn stat_at(dirfd: RawFd, name: &CStr, flags: libc::c_int) -> io::Result<Meta> {
if !NO_STATX.load(Ordering::Relaxed) {
let mut st: libc::statx = unsafe { std::mem::zeroed() };
let mask = libc::STATX_BASIC_STATS | libc::STATX_BTIME;
let r = unsafe { libc::statx(dirfd, name.as_ptr(), flags | libc::AT_STATX_DONT_SYNC, mask, &mut st) };
if r == 0 {
let mut m = Meta {
mode: mode_from_unix(st.stx_mode as u32),
size: st.stx_size as i64,
alloc: st.stx_blocks as i64 * 512,
alloc_known: true,
mtime: st.stx_mtime.tv_sec * 1_000_000_000 + st.stx_mtime.tv_nsec as i64,
uid: st.stx_uid,
gid: st.stx_gid,
nlink: st.stx_nlink,
dev: libc::makedev(st.stx_dev_major, st.stx_dev_minor),
ino: st.stx_ino,
has_ino: true,
..Default::default()
};
if st.stx_mask & libc::STATX_BTIME != 0 {
m.btime = st.stx_btime.tv_sec * 1_000_000_000 + st.stx_btime.tv_nsec as i64;
}
return Ok(m);
}
let err = io::Error::last_os_error();
if err.raw_os_error() != Some(libc::ENOSYS) {
return Err(err);
}
NO_STATX.store(true, Ordering::Relaxed);
}
fstat_at(dirfd, name, flags)
}
#[cfg(not(target_os = "linux"))]
fn stat_at(dirfd: RawFd, name: &CStr, flags: libc::c_int) -> io::Result<Meta> {
fstat_at(dirfd, name, flags)
}
fn fstat_at(dirfd: RawFd, name: &CStr, flags: libc::c_int) -> io::Result<Meta> {
let mut st: libc::stat = unsafe { std::mem::zeroed() };
cvt(unsafe { libc::fstatat(dirfd, name.as_ptr(), &mut st, flags) })?;
Ok(from_stat(&st))
}
#[allow(clippy::unnecessary_cast)]
fn from_stat(st: &libc::stat) -> Meta {
Meta {
mode: mode_from_unix(st.st_mode as u32),
size: st.st_size as i64,
alloc: st.st_blocks as i64 * 512,
alloc_known: true,
mtime: st.st_mtime as i64 * 1_000_000_000 + st.st_mtime_nsec as i64,
uid: st.st_uid,
gid: st.st_gid,
nlink: st.st_nlink as u32,
dev: st.st_dev as u64,
ino: st.st_ino as u64,
has_ino: true,
..Default::default()
}
}
/// An open directory stream (readdir over the fd we also stat relative to).
struct DirStream {
dir: *mut libc::DIR,
}
impl Drop for DirStream {
fn drop(&mut self) {
unsafe { libc::closedir(self.dir) };
}
}
/// Streams the entries of a directory in chunks of up to `chunk`, stat-ing
/// each entry relative to the directory fd (no repeated path resolution).
/// Returning an error from f stops the read and returns it.
pub fn read_dir<E: From<io::Error>>(path: &[u8], chunk: usize, mut f: impl FnMut(Vec<Meta>) -> Result<(), E>) -> Result<(), E> {
let fd = open_dir(path)?;
let raw = fd.as_raw_fd();
let dir = unsafe { libc::fdopendir(raw) };
if dir.is_null() {
return Err(io::Error::last_os_error().into());
}
std::mem::forget(fd); // owned by the DIR stream now
let ds = DirStream { dir };
let mut out = Vec::with_capacity(chunk);
loop {
unsafe { *libc::__errno_location() = 0 };
let ent = unsafe { libc::readdir(ds.dir) };
if ent.is_null() {
let e = io::Error::last_os_error();
if e.raw_os_error().unwrap_or(0) != 0 {
return Err(e.into());
}
break;
}
let name = unsafe { CStr::from_ptr((*ent).d_name.as_ptr()) };
let nb = name.to_bytes();
if nb == b"." || nb == b".." {
continue;
}
let mut m = stat_at(raw, name, libc::AT_SYMLINK_NOFOLLOW).unwrap_or_else(|e| Meta { err: Some(e), ..Default::default() });
m.name = nb.to_vec();
out.push(m);
if out.len() >= chunk {
f(std::mem::replace(&mut out, Vec::with_capacity(chunk)))?;
}
}
if !out.is_empty() {
f(out)?;
}
Ok(())
}
fn stat_path(path: &[u8], follow: bool) -> io::Result<Meta> {
let c = cstr(path)?;
let flags = if follow { 0 } else { libc::AT_SYMLINK_NOFOLLOW };
let mut m = stat_at(libc::AT_FDCWD, &c, flags)?;
m.name = base_name(path).to_vec();
Ok(m)
}
/// Metadata for path without following a final symlink.
pub fn lstat(path: &[u8]) -> io::Result<Meta> {
stat_path(path, false)
}
/// Metadata for path, following symlinks.
pub fn stat(path: &[u8]) -> io::Result<Meta> {
stat_path(path, true)
}
/// Joins a directory and an entry name without cleaning.
pub fn join_path(dir: &[u8], name: &[u8]) -> Vec<u8> {
let mut p = Vec::with_capacity(dir.len() + name.len() + 1);
p.extend_from_slice(dir);
if dir.last() != Some(&b'/') {
p.push(b'/');
}
p.extend_from_slice(name);
p
}
fn base_name(path: &[u8]) -> &[u8] {
let mut end = path.len();
while end > 1 && path[end - 1] == b'/' {
end -= 1;
}
let p = &path[..end];
match p.iter().rposition(|&b| b == b'/') {
Some(i) if p.len() > 1 => &p[i + 1..],
_ => p,
}
}
static NAMES: Mutex<Option<(HashMap<u32, String>, HashMap<u32, String>)>> = Mutex::new(None);
fn lookup_name(group: bool, id: u32) -> String {
let mut g = NAMES.lock().unwrap();
let (users, groups) = g.get_or_insert_with(Default::default);
let cache = if group { groups } else { users };
if let Some(n) = cache.get(&id) {
return n.clone();
}
let mut buf = vec![0u8; 16384];
let name = unsafe {
if group {
let mut gr: libc::group = std::mem::zeroed();
let mut res = std::ptr::null_mut();
libc::getgrgid_r(id, &mut gr, buf.as_mut_ptr().cast(), buf.len(), &mut res);
(!res.is_null()).then(|| CStr::from_ptr(gr.gr_name).to_string_lossy().into_owned())
} else {
let mut pw: libc::passwd = std::mem::zeroed();
let mut res = std::ptr::null_mut();
libc::getpwuid_r(id, &mut pw, buf.as_mut_ptr().cast(), buf.len(), &mut res);
(!res.is_null()).then(|| CStr::from_ptr(pw.pw_name).to_string_lossy().into_owned())
}
}
.unwrap_or_else(|| id.to_string());
cache.insert(id, name.clone());
name
}
/// Resolves a uid to a name (cached; falls back to the number).
pub fn user_name(uid: u32) -> String {
lookup_name(false, uid)
}
/// Resolves a gid to a name (cached; falls back to the number).
pub fn group_name(gid: u32) -> String {
lookup_name(true, gid)
}
/// Linux pseudo-filesystems whose contents are not disk usage.
#[cfg(target_os = "linux")]
const VIRTUAL_FS: [i64; 19] = [
0x9fa0, // proc
0x62656572, // sysfs
0x1cd1, // devpts
0x27e0eb, // cgroup
0x63677270, // cgroup2
0x64626720, // debugfs
0x74726163, // tracefs
0x73636673, // securityfs
0x6165676c, // pstore
0xcafe4a11, // bpf
0x62656570, // configfs
0x65735543, // fusectl
0x19800202, // mqueue
0xde5e81e4, // efivarfs
0x42494e4d, // binfmt_misc
0xf97cff8c, // selinuxfs
0x958458f6, // hugetlbfs
0x6e736673, // nsfs
0x50495045, // pipefs
];
/// Whether path is the root of a pseudo filesystem (proc, sysfs, cgroup, …)
/// that should not be scanned as disk usage.
#[cfg(target_os = "linux")]
pub fn is_virtual_fs(path: &[u8]) -> bool {
let Ok(c) = cstr(path) else { return false };
let mut st: libc::statfs = unsafe { std::mem::zeroed() };
if unsafe { libc::statfs(c.as_ptr(), &mut st) } != 0 {
return false;
}
VIRTUAL_FS.contains(&(st.f_type as i64))
}
#[cfg(not(target_os = "linux"))]
pub fn is_virtual_fs(_: &[u8]) -> bool {
false
}
/// What the scan recorded for an item about to be trashed or deleted. The
/// operation refuses an item whose owner or file type no longer matches.
#[derive(Clone, Copy, Debug)]
pub struct Expect {
pub uid: u32,
pub mode: u32, // only the type bits are compared
}
const CHANGED: &str = "item changed since the scan (owner or type differs); rescan first";
fn other(msg: impl Into<String>) -> io::Error {
io::Error::other(msg.into())
}
/// Guards helper invocations: an absolute path can never be parsed as an
/// option by the helper program.
fn check_abs(path: &Path) -> io::Result<()> {
if !path.is_absolute() {
return Err(other("refusing relative path"));
}
std::fs::symlink_metadata(path).map(|_| ())
}
/// Opens a file whose content is about to be read. It does not follow a
/// final symlink, and O_NONBLOCK keeps a FIFO swapped in since the scan from
/// blocking open(2) forever; callers still check the file type.
pub fn open_content(path: &Path) -> io::Result<File> {
std::fs::OpenOptions::new().read(true).custom_flags(libc::O_NOFOLLOW | libc::O_NONBLOCK).open(path)
}
/// Runs a helper program with an argument vector (never a shell), detached
/// from the terminal so it cannot disturb the TUI.
fn start_detached(name: &str, arg: &Path) -> io::Result<()> {
use std::process::{Command, Stdio};
let mut child = Command::new(name).arg(arg).stdin(Stdio::null()).stdout(Stdio::null()).stderr(Stdio::null()).spawn()?;
std::thread::spawn(move || child.wait());
Ok(())
}
/// The user-facing name of the trash.
pub const TRASH_NAME: &str = "trash";
/// Opens the item's directory in the desktop file manager.
pub fn reveal(path: &Path) -> io::Result<()> {
check_abs(path)?;
let md = std::fs::symlink_metadata(path)?;
let target = if md.is_dir() { path } else { path.parent().unwrap_or(path) };
let opener = if cfg!(target_os = "macos") { "open" } else { "xdg-open" };
start_detached(opener, target)
}
/// Whether there is no graphical session (no X or Wayland display), so there
/// is no file manager to open and no desktop trash anyone will empty.
pub fn headless() -> bool {
if cfg!(target_os = "macos") {
return false;
}
std::env::var_os("DISPLAY").is_none_or(|v| v.is_empty()) && std::env::var_os("WAYLAND_DISPLAY").is_none_or(|v| v.is_empty())
}
fn split_parent(path: &Path) -> io::Result<(&Path, &OsStr)> {
match (path.parent(), path.file_name()) {
(Some(d), Some(b)) => Ok((d, b)),
_ => Err(other("refusing to operate on a filesystem root")),
}
}
fn check_expect(dirfd: RawFd, base: &CStr, want: Expect) -> io::Result<libc::stat> {
let mut st: libc::stat = unsafe { std::mem::zeroed() };
cvt(unsafe { libc::fstatat(dirfd, base.as_ptr(), &mut st, libc::AT_SYMLINK_NOFOLLOW) })?;
if st.st_uid != want.uid || mode_from_unix(st.st_mode as u32) & mode::TYPE != want.mode & mode::TYPE {
return Err(other(CHANGED));
}
Ok(st)
}
/// Permanently removes path (recursively for a directory) if it still
/// matches want. The check and the removal both go through descriptors
/// opened from the parent directory without following symlinks, so a
/// symlink swapped in since the scan cannot redirect the removal outside it.
pub fn delete(path: &Path, want: Expect) -> io::Result<()> {
check_abs(path)?;
let (dir, base) = split_parent(path)?;
let dfd = open_dir(dir.as_os_str().as_bytes())?;
let cbase = cstr(base.as_bytes())?;
let st = check_expect(dfd.as_raw_fd(), &cbase, want)?;
remove_at(dfd.as_raw_fd(), &cbase, st.st_mode & libc::S_IFMT == libc::S_IFDIR)
}
fn remove_at(dirfd: RawFd, name: &CStr, is_dir: bool) -> io::Result<()> {
if !is_dir {
return cvt(unsafe { libc::unlinkat(dirfd, name.as_ptr(), 0) }).map(|_| ());
}
let fd = cvt(unsafe {
libc::openat(dirfd, name.as_ptr(), libc::O_RDONLY | libc::O_DIRECTORY | libc::O_NOFOLLOW | libc::O_CLOEXEC)
})?;
let sub = unsafe { OwnedFd::from_raw_fd(fd) };
// Collect names first: removing while iterating a DIR stream is unspecified.
let mut names = Vec::new();
let dup = cvt(unsafe { libc::dup(sub.as_raw_fd()) })?;
let dir = unsafe { libc::fdopendir(dup) };
if dir.is_null() {
unsafe { libc::close(dup) };
return Err(io::Error::last_os_error());
}
let ds = DirStream { dir };
loop {
let ent = unsafe { libc::readdir(ds.dir) };
if ent.is_null() {
break;
}
let n = unsafe { CStr::from_ptr((*ent).d_name.as_ptr()) };
if n.to_bytes() != b"." && n.to_bytes() != b".." {
let t = unsafe { (*ent).d_type };
let is_dir = match t {
libc::DT_UNKNOWN => fstat_at(sub.as_raw_fd(), n, libc::AT_SYMLINK_NOFOLLOW).is_ok_and(|m| mode::is_dir(m.mode)),
t => t == libc::DT_DIR,
};
names.push((n.to_owned(), is_dir));
}
}
drop(ds);
for (n, d) in names {
remove_at(sub.as_raw_fd(), &n, d)?;
}
cvt(unsafe { libc::unlinkat(dirfd, name.as_ptr(), libc::AT_REMOVEDIR) }).map(|_| ())
}
/// Moves path to dst if it still matches want. The parent directory is
/// opened once and both the check and the rename are relative to that
/// descriptor, so a parent swapped for a symlink since the scan (or between
/// check and rename) cannot redirect the move to another user's file.
fn rename_checked(path: &Path, dst: &Path, want: Expect) -> io::Result<()> {
let (dir, base) = split_parent(path)?;
let dfd = open_dir(dir.as_os_str().as_bytes())?;
let cbase = cstr(base.as_bytes())?;
check_expect(dfd.as_raw_fd(), &cbase, want)?;
let cdst = cstr(dst.as_os_str().as_bytes())?;
cvt(unsafe { libc::renameat(dfd.as_raw_fd(), cbase.as_ptr(), libc::AT_FDCWD, cdst.as_ptr()) }).map(|_| ())
}
/// Creates dir (mode 0700) if missing; an existing entry must be a real
/// directory (not a symlink) owned by us. With strict (trash on a shared
/// filesystem) it must also be inaccessible to others, as the freedesktop.org
/// spec requires.
fn ensure_private_dir(dir: &Path, strict: bool) -> io::Result<()> {
use std::os::unix::fs::DirBuilderExt;
if let Err(e) = std::fs::DirBuilder::new().mode(0o700).create(dir) {
if e.kind() != io::ErrorKind::AlreadyExists {
return Err(e);
}
}
let md = std::fs::symlink_metadata(dir)?;
if !md.is_dir() {
return Err(other("not a directory (symlink?)"));
}
if md.uid() != unsafe { libc::getuid() } {
return Err(other("owned by another user"));
}
if strict && md.mode() & 0o077 != 0 {
return Err(other("accessible to other users"));
}
Ok(())
}
/// The top directory of the filesystem containing path.
fn mount_top(path: &Path, dev: u64) -> PathBuf {
let mut cur = path.parent().unwrap_or(path).to_path_buf();
loop {
let Some(parent) = cur.parent() else { return cur };
match std::fs::metadata(parent) {
Ok(m) if m.dev() == dev => cur = parent.to_path_buf(),
_ => return cur,
}
}
}
fn percent_encode_path(p: &[u8]) -> String {
let mut s = String::with_capacity(p.len());
for &b in p {
if b.is_ascii_alphanumeric() || b"-._~/!$&'()*+,;=:@".contains(&b) {
s.push(b as char);
} else {
s.push_str(&format!("%{b:02X}"));
}
}
s
}
fn local_timestamp() -> String {
let mut t: libc::time_t = unsafe { libc::time(std::ptr::null_mut()) };
let mut tm: libc::tm = unsafe { std::mem::zeroed() };
unsafe { libc::localtime_r(&mut t, &mut tm) };
format!("{:04}-{:02}-{:02}T{:02}:{:02}:{:02}", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec)
}
/// Moves path to the freedesktop.org trash: the home trash when on the same
/// filesystem, otherwise $topdir/.Trash-$uid on the item's filesystem. It
/// never copies across filesystems and never deletes.
pub fn trash(path: &Path, want: Expect) -> io::Result<()> {
check_abs(path)?;
let dev = std::fs::symlink_metadata(path)?.dev();
let data_home = match std::env::var_os("XDG_DATA_HOME").filter(|v| !v.is_empty()) {
Some(d) => PathBuf::from(d),
None => {
let home = std::env::var_os("HOME").filter(|v| !v.is_empty()).ok_or_else(|| other("$HOME is not defined"))?;
PathBuf::from(home).join(".local/share")
}
};
let home = data_home.join("Trash");
let (trash, info_path): (PathBuf, Vec<u8>) = match std::fs::metadata(&data_home) {
Ok(m) if m.dev() == dev => (home.clone(), path.as_os_str().as_bytes().to_vec()),
_ => {
let top = mount_top(path, dev);
let rel = path.strip_prefix(&top).map_err(|e| other(e.to_string()))?;
(top.join(format!(".Trash-{}", unsafe { libc::getuid() })), rel.as_os_str().as_bytes().to_vec())
}
};
let shared = trash != home;
if !shared {
use std::os::unix::fs::DirBuilderExt;
std::fs::DirBuilder::new().recursive(true).mode(0o700).create(&trash)?;
} else if let Err(e) = ensure_private_dir(&trash, true) {
// On a shared filesystem another user could plant a symlink or a
// world-writable directory here; refuse rather than follow it.
return Err(other(format!("trash directory {} is unsafe: {e}", trash.display())));
}
let (files, info) = (trash.join("files"), trash.join("info"));
for d in [&files, &info] {
ensure_private_dir(d, shared).map_err(|e| other(format!("trash directory {} is unsafe: {e}", d.display())))?;
}
let base = path.file_name().ok_or_else(|| other("no file name"))?;
for i in 1..10000 {
let mut name = base.to_os_string();
if i > 1 {
name.push(format!(".{i}"));
}
let dst = files.join(&name);
if std::fs::symlink_metadata(&dst).is_ok() {
continue; // never overwrite an earlier trashed item (even without .trashinfo)
}
let mut info_name = name.clone();
info_name.push(".trashinfo");
let ip = info.join(info_name);
let mut f = match std::fs::OpenOptions::new().write(true).create_new(true).mode(0o600).open(&ip) {
Ok(f) => f,
Err(e) if e.kind() == io::ErrorKind::AlreadyExists => continue,
Err(e) => return Err(e),
};
let w = write!(f, "[Trash Info]\nPath={}\nDeletionDate={}\n", percent_encode_path(&info_path), local_timestamp()).and_then(|_| f.sync_all());
drop(f);
if let Err(e) = w.and_then(|_| rename_checked(path, &dst, want)) {
let _ = std::fs::remove_file(&ip);
return Err(e);
}
return Ok(());
}
Err(other("trash: too many items with the same name"))
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn mode_string_matches_go() {
assert_eq!(mode::string(mode::DIR | 0o755), "drwxr-xr-x");
assert_eq!(mode::string(0o644), "-rw-r--r--");
assert_eq!(mode::string(mode::SYMLINK | 0o777), "Lrwxrwxrwx");
}
#[test]
fn delete_refuses_changed_type() {
let d = std::env::temp_dir().join(format!("mapsize-del-{}", std::process::id()));
std::fs::create_dir_all(d.join("sub/inner")).unwrap();
std::fs::write(d.join("sub/inner/f"), b"x").unwrap();
let uid = unsafe { libc::getuid() };
assert!(delete(&d.join("sub"), Expect { uid, mode: 0 }).is_err());
delete(&d.join("sub"), Expect { uid, mode: mode::DIR }).unwrap();
assert!(!d.join("sub").exists());
std::fs::remove_dir_all(&d).unwrap();
}
}
/// Shell-style glob match, a port of Go's filepath.Match: `*` and `?` do not
/// match '/', `[^...]` negates, `\\` escapes. A malformed pattern matches
/// nothing.
pub fn glob_match(pattern: &[u8], name: &[u8]) -> bool {
// Fast path for the common "*.ext" shape: * cannot cross '/'.
if let Some(suffix) = pattern.strip_prefix(b"*") {
if !suffix.iter().any(|b| b"*?[\\".contains(b)) {
return name.ends_with(suffix) && !name[..name.len() - suffix.len()].contains(&b'/');
}
}
glob(pattern, name).unwrap_or(false)
}
struct BadPattern;
fn decode_rune(s: &[u8]) -> (u32, usize) {
match s.utf8_chunks().next() {
Some(c) if !c.valid().is_empty() => {
let ch = c.valid().chars().next().unwrap();
(ch as u32, ch.len_utf8())
}
_ => (0xFFFD, 1),
}
}
fn glob(mut pattern: &[u8], mut name: &[u8]) -> Result<bool, BadPattern> {
'pattern: while !pattern.is_empty() {
let (star, chunk, rest) = scan_chunk(pattern);
pattern = rest;
if star && chunk.is_empty() {
// Trailing * matches the rest of the string unless it has a /.
return Ok(!name.contains(&b'/'));
}
let r = match_chunk(chunk, name);
if let Ok(Some(t)) = r {
// The last chunk must exhaust the name.
if t.is_empty() || !pattern.is_empty() {
name = t;
continue;
}
}
r?;
if star {
// Look for a match skipping i+1 bytes; cannot skip /.
let mut i = 0;
while i < name.len() && name[i] != b'/' {
if let Some(t) = match_chunk(chunk, &name[i + 1..])? {
if !(pattern.is_empty() && !t.is_empty()) {
name = t;
continue 'pattern;
}
}
i += 1;
}
}
// Before failing, check the rest of the pattern is well-formed.
while !pattern.is_empty() {
let (_, chunk, rest) = scan_chunk(pattern);
pattern = rest;
match_chunk(chunk, b"")?;
}
return Ok(false);
}
Ok(name.is_empty())
}
fn scan_chunk(mut pattern: &[u8]) -> (bool, &[u8], &[u8]) {
let mut star = false;
while pattern.first() == Some(&b'*') {
pattern = &pattern[1..];
star = true;
}
let mut in_range = false;
let mut i = 0;
while i < pattern.len() {
match pattern[i] {
b'\\' if i + 1 < pattern.len() => i += 1,
b'[' => in_range = true,
b']' => in_range = false,
b'*' if !in_range => break,
_ => {}
}
i += 1;
}
(star, &pattern[..i], &pattern[i..])
}
/// Matches one chunk against the start of s, returning the rest of s.
fn match_chunk<'a>(mut chunk: &[u8], mut s: &'a [u8]) -> Result<Option<&'a [u8]>, BadPattern> {
// After a failure, keep parsing chunk to validate it, but stop reading s.
let mut failed = false;
while !chunk.is_empty() {
if !failed && s.is_empty() {
failed = true;
}
match chunk[0] {
b'[' => {
let mut r = 0;
if !failed {
let (c, n) = decode_rune(s);
r = c;
s = &s[n..];
}
chunk = &chunk[1..];
let negated = chunk.first() == Some(&b'^');
if negated {
chunk = &chunk[1..];
}
let (mut matched, mut nrange) = (false, 0);
loop {
if chunk.first() == Some(&b']') && nrange > 0 {
chunk = &chunk[1..];
break;
}
let (lo, rest) = get_esc(chunk)?;
chunk = rest;
let mut hi = lo;
if chunk[0] == b'-' {
(hi, chunk) = get_esc(&chunk[1..])?;
}
if lo <= r && r <= hi {
matched = true;
}
nrange += 1;
}
if matched == negated {
failed = true;
}
}
b'?' => {
if !failed {
if s[0] == b'/' {
failed = true;
}
s = &s[decode_rune(s).1..];
}
chunk = &chunk[1..];
}
c => {
let c = if c == b'\\' {
chunk = &chunk[1..];
*chunk.first().ok_or(BadPattern)?
} else {
c
};
if !failed {
if c != s[0] {
failed = true;
}
s = &s[1..];
}
chunk = &chunk[1..];
}
}
}
Ok((!failed).then_some(s))
}
fn get_esc(mut chunk: &[u8]) -> Result<(u32, &[u8]), BadPattern> {
if chunk.is_empty() || chunk[0] == b'-' || chunk[0] == b']' {
return Err(BadPattern);
}
if chunk[0] == b'\\' {
chunk = &chunk[1..];
if chunk.is_empty() {
return Err(BadPattern);
}
}
let (r, n) = decode_rune(chunk);
if (r == 0xFFFD && n == 1) || chunk.len() == n {
return Err(BadPattern);
}
Ok((r, &chunk[n..]))
}
/// Lexically cleans a path like Go's filepath.Clean.
pub fn clean_path(p: &[u8]) -> Vec<u8> {
if p.is_empty() {
return b".".to_vec();
}
let rooted = p[0] == b'/';
let mut parts: Vec<&[u8]> = Vec::new();
for c in p.split(|&b| b == b'/') {
match c {
b"" | b"." => {}
b".." => {
if parts.last().is_some_and(|l| *l != b"..") {
parts.pop();
} else if !rooted {
parts.push(c);
}
}
_ => parts.push(c),
}
}
let mut out = Vec::with_capacity(p.len());
if rooted {
out.push(b'/');
}
out.extend_from_slice(&parts.join(&b'/'));
if out.is_empty() {
out.push(b'.');
}
out
}
/// Makes a path absolute (relative to the working directory) and cleans it.
pub fn abs_path(p: &[u8]) -> io::Result<Vec<u8>> {
if p.first() == Some(&b'/') {
return Ok(clean_path(p));
}
let cwd = std::env::current_dir()?;
Ok(clean_path(&join_path(cwd.as_os_str().as_bytes(), p)))
}
#[cfg(test)]
mod path_tests {
use super::*;
#[test]
fn clean_and_glob() {
assert_eq!(clean_path(b"/a/b/../c/./"), b"/a/c");
assert_eq!(clean_path(b"/.."), b"/");
assert_eq!(clean_path(b"a/../../b"), b"../b");
assert!(glob_match(b"*.log", b"x.log"));
assert!(!glob_match(b"*.log", b"d/x.log"));
assert!(glob_match(b"/tmp/*/x", b"/tmp/a/x"));
assert!(!glob_match(b"[", b"["));
assert!(glob_match(b"a[^b-d]?", "ax\u{e9}".as_bytes()));
assert!(!glob_match(b"a[^b-d]c", b"abc"));
assert!(glob_match(b"\\*x", b"*x"));
assert!(glob_match(b"*.dat", b"f1.dat"));
assert!(!glob_match(b"*.dat", b"f1.dax"));
assert!(glob_match(b"a*b*c", b"axxbyyc"));
assert!(glob_match(b"*/x", b"a/x") && !glob_match(b"*/x", b"a/b/x"));
assert!(glob_match(b"*", b"abc") && !glob_match(b"*", b"a/c"));
assert!(!glob_match(b"*.dat", b"x.dat/y.da") && !glob_match(b"*.dat", b"d/x.dat"));
}
}
rust/src/scan.rs
+775
View File
@@ -0,0 +1,775 @@
//! The bounded concurrent filesystem scanner.
//!
//! Architecture (see ARCHITECTURE.md): a single controller thread owns the
//! write side of the Tree and a FIFO of pending directories. A fixed pool of
//! workers performs directory I/O and sends result chunks back. The
//! controller's select loop offers jobs and accepts results at the same
//! time, so bounded channels can never deadlock: workers never enqueue work
//! themselves.
use crate::cancel::Cancel;
use crate::inventory::{self as inv, Delta, ErrorRecord, Kind, Node, NodeId, Tree};
use crate::platform::{self, Meta};
use crossbeam_channel::{Receiver, Select, Sender};
use std::collections::HashSet;
use std::io;
use std::sync::atomic::{AtomicI64, Ordering};
use std::sync::{Arc, RwLock};
use std::time::SystemTime;
/// Symlink traversal.
#[derive(Clone, Copy, PartialEq, Eq, Debug, Default)]
pub enum FollowMode {
#[default]
None,
SameFs,
All,
}
impl FollowMode {
pub fn name(self) -> &'static str {
["none", "same-filesystem", "all"][self as usize]
}
}
/// Parses a --follow-symlinks value.
pub fn parse_follow(s: &str) -> Result<FollowMode, String> {
match s {
"none" | "" => Ok(FollowMode::None),
"same-filesystem" | "same-fs" => Ok(FollowMode::SameFs),
"all" => Ok(FollowMode::All),
_ => Err(format!("invalid --follow-symlinks {s:?} (want none, same-filesystem or all)")),
}
}
/// Resolves a concurrency mode name or number to a worker count.
pub fn workers(mode: &str) -> Result<usize, String> {
let cpu = std::thread::available_parallelism().map_or(1, |n| n.get());
match mode {
"conservative" => Ok(2),
"balanced" | "" => Ok((2 * cpu).clamp(2, 8)),
"aggressive" => Ok((8 * cpu).clamp(4, 64)),
_ => match mode.trim().parse::<usize>() {
Ok(n) if (1..=1024).contains(&n) => Ok(n),
_ => Err(format!("invalid workers {mode:?} (conservative, balanced, aggressive or 1-1024)")),
},
}
}
/// Configures a scan. Zero tuning knobs mean default.
#[derive(Clone, Debug, Default)]
pub struct Options {
pub workers: usize,
pub follow: FollowMode,
pub one_file_system: bool,
pub excludes: Vec<String>,
pub chunk_size: usize, // entries per result chunk
pub job_buffer: usize, // capacity of the job channel
pub result_buf: usize, // capacity of the result channel
pub apply_batch: usize, // max results applied per write-lock hold
}
impl Options {
fn defaults(&mut self) {
if self.workers == 0 {
self.workers = workers("balanced").unwrap();
}
if self.chunk_size == 0 {
self.chunk_size = 1024;
}
if self.job_buffer == 0 {
self.job_buffer = self.workers * 2;
}
if self.result_buf == 0 {
self.result_buf = self.workers * 4;
}
if self.apply_batch == 0 {
self.apply_batch = 64;
}
}
}
/// A cheap, lock-free view of scan activity.
#[derive(Clone, Copy, Debug, Default)]
pub struct Progress {
pub entries: i64,
pub pending: i64, // directories discovered but not yet dispatched
pub inflight: i64, // directories being read
pub workers: usize,
}
#[derive(Default)]
struct Counters {
entries: AtomicI64,
pending: AtomicI64,
inflight: AtomicI64,
}
/// One running scan. `tree` is safe to read under its read lock while the
/// scan runs.
pub struct Scanner {
pub tree: Arc<RwLock<Tree>>,
counters: Arc<Counters>,
workers: usize,
done: Receiver<()>,
}
impl Scanner {
/// Ready (disconnected) once the scan has finished or been cancelled and
/// drained; for use in select.
pub fn done(&self) -> &Receiver<()> {
&self.done
}
pub fn is_done(&self) -> bool {
matches!(self.done.try_recv(), Err(crossbeam_channel::TryRecvError::Disconnected))
}
/// Blocks until the scan is done.
pub fn wait(&self) {
let _ = self.done.recv();
}
/// Live counters without locking the tree.
pub fn progress(&self) -> Progress {
Progress {
entries: self.counters.entries.load(Ordering::Relaxed),
pending: self.counters.pending.load(Ordering::Relaxed),
inflight: self.counters.inflight.load(Ordering::Relaxed),
workers: self.workers,
}
}
}
struct Job {
id: NodeId,
path: Vec<u8>,
dev: u64,
// hints derived once per directory
in_cache: bool,
in_log: bool,
}
enum ReadErr {
Io(io::Error),
Cancelled,
}
impl From<io::Error> for ReadErr {
fn from(e: io::Error) -> Self {
ReadErr::Io(e)
}
}
struct ScanResult {
job: Arc<Job>,
entries: Vec<Meta>,
is_final: bool,
err: Option<ReadErr>,
}
type InodeKey = (u64, u64);
fn kind_of(m: &Meta) -> Kind {
if platform::mode::is_dir(m.mode) {
Kind::Dir
} else if platform::mode::is_regular(m.mode) {
Kind::File
} else if platform::mode::is_symlink(m.mode) {
Kind::Symlink
} else {
Kind::Other
}
}
fn set_meta(n: &mut Node, m: &Meta) {
n.size = m.size;
n.alloc = m.alloc;
n.mtime = m.mtime;
n.mode = m.mode;
n.uid = m.uid;
n.gid = m.gid;
n.nlink = m.nlink;
if !m.alloc_known {
n.flags |= inv::FLAG_ALLOC_UNKNOWN;
}
}
/// Runs f, aborting the process if it panics: a scanner bug must never
/// leave the controller waiting forever. The panic hook (which the TUI uses
/// to restore the terminal) runs first.
fn guard(f: impl FnOnce()) {
if std::panic::catch_unwind(std::panic::AssertUnwindSafe(f)).is_err() {
std::process::abort();
}
}
/// Stats root, creates the tree and begins scanning in the background.
pub fn start(root: &[u8], mut opts: Options, cancel: Cancel) -> io::Result<Scanner> {
opts.defaults();
// Path-style exclusions are matched against absolute paths.
for p in &mut opts.excludes {
if p.contains(['/', '\\']) {
if let Ok(a) = platform::abs_path(p.as_bytes()) {
*p = String::from_utf8_lossy(&a).into_owned();
}
}
}
let abs = platform::abs_path(root)?;
let m = platform::stat(&abs)?;
let kind = kind_of(&m);
let mut t = Tree::new(&abs, kind);
t.stats.workers = opts.workers;
t.stats.excludes = opts.excludes.clone();
t.stats.one_file_system = opts.one_file_system;
t.stats.follow = opts.follow.name().to_string();
let r = t.node_mut(0);
set_meta(r, &m);
r.tot_size = m.size;
r.tot_alloc = m.alloc;
let (done_tx, done) = crossbeam_channel::bounded::<()>(0);
let counters = Arc::new(Counters::default());
if kind != Kind::Dir {
t.stats.files = 1;
t.stats.complete = true;
t.stats.end = Some(SystemTime::now());
drop(done_tx);
return Ok(Scanner { tree: Arc::new(RwLock::new(t)), counters, workers: opts.workers, done });
}
t.stats.dirs = 1;
// Loop detection needs inode identity; without it symlinks are not
// followed at all.
if opts.follow != FollowMode::None && !m.has_ino {
opts.follow = FollowMode::None;
t.stats.follow = "none (no inode identity on this platform)".into();
}
let visited = (opts.follow != FollowMode::None).then(|| HashSet::from([(m.dev, m.ino)]));
let path_excludes = opts.excludes.iter().map(|p| (p.contains(['/', '\\']), p.as_bytes().to_vec())).collect();
let tree = Arc::new(RwLock::new(t));
let workers = opts.workers;
counters.pending.store(1, Ordering::Relaxed);
let c = Controller {
tree: tree.clone(),
counters: counters.clone(),
excludes: path_excludes,
opts,
pending: vec![(0, m.dev)],
head: 0,
links: HashSet::new(),
visited,
};
std::thread::Builder::new().name("scan-controller".into()).spawn(move || {
guard(|| c.run(cancel));
drop(done_tx);
})?;
Ok(Scanner { tree, counters, workers, done })
}
/// Bounds how long the controller holds the write lock, so the UI's read
/// lock is never starved for more than a few milliseconds.
const MAX_ENTRIES_PER_LOCK: usize = 8192;
struct Controller {
tree: Arc<RwLock<Tree>>,
counters: Arc<Counters>,
opts: Options,
excludes: Vec<(bool, Vec<u8>)>, // (is path pattern, pattern)
pending: Vec<(NodeId, u64)>, // FIFO of (dir, dev); head advances, compacted occasionally
head: usize,
links: HashSet<InodeKey>,
visited: Option<HashSet<InodeKey>>, // only when following symlinks
}
fn worker(cancel: &Cancel, jobs: Receiver<Arc<Job>>, results: Sender<ScanResult>, chunk: usize) {
for j in jobs {
let err = if cancel.is_cancelled() {
Some(ReadErr::Cancelled)
} else {
platform::read_dir(&j.path, chunk, |ms| {
if cancel.is_cancelled() {
return Err(ReadErr::Cancelled);
}
results.send(ScanResult { job: j.clone(), entries: ms, is_final: false, err: None }).map_err(|_| ReadErr::Cancelled)
})
.err()
};
let _ = results.send(ScanResult { job: j, entries: Vec::new(), is_final: true, err });
}
}
impl Controller {
fn run(mut self, cancel: Cancel) {
let (jobs_tx, jobs_rx) = crossbeam_channel::bounded::<Arc<Job>>(self.opts.job_buffer);
let (res_tx, res_rx) = crossbeam_channel::bounded::<ScanResult>(self.opts.result_buf);
let mut handles = Vec::with_capacity(self.opts.workers);
for i in 0..self.opts.workers {
let (jobs, results, cancel, chunk) = (jobs_rx.clone(), res_tx.clone(), cancel.clone(), self.opts.chunk_size);
handles.push(
std::thread::Builder::new()
.name(format!("scan-worker-{i}"))
.spawn(move || guard(|| worker(&cancel, jobs, results, chunk)))
.expect("spawn scan worker"),
);
}
drop((jobs_rx, res_tx));
let mut inflight = 0i64;
let mut cancelled = false;
let mut next: Option<Arc<Job>> = None;
let mut batch: Vec<ScanResult> = Vec::with_capacity(self.opts.apply_batch);
loop {
if next.is_none() && !cancelled && self.head < self.pending.len() {
next = Some(self.make_job(self.pending[self.head]));
}
if inflight == 0 && next.is_none() {
break;
}
let mut sel = Select::new();
let send_i = next.as_ref().map(|_| sel.send(&jobs_tx));
let recv_i = sel.recv(&res_rx);
let cancel_i = (!cancelled).then(|| sel.recv(cancel.done()));
let op = sel.select();
let i = op.index();
if Some(i) == send_i {
op.send(&jobs_tx, next.take().unwrap()).expect("workers alive");
self.head += 1;
if self.head > 4096 && self.head * 2 > self.pending.len() {
self.pending.drain(..self.head);
self.head = 0;
}
inflight += 1;
} else if i == recv_i {
let r = op.recv(&res_rx).expect("workers alive");
let mut n = r.entries.len();
batch.push(r);
while batch.len() < self.opts.apply_batch && n < MAX_ENTRIES_PER_LOCK {
match res_rx.try_recv() {
Ok(r) => {
n += r.entries.len();
batch.push(r);
}
Err(_) => break,
}
}
let tree = self.tree.clone();
let mut t = tree.write().unwrap();
for r in batch.drain(..) {
if self.apply(&mut t, r) {
inflight -= 1;
}
}
} else {
debug_assert_eq!(Some(i), cancel_i);
let _ = op.recv(cancel.done());
cancelled = true;
next = None;
}
self.counters.inflight.store(inflight, Ordering::Relaxed);
self.counters.pending.store((self.pending.len() - self.head) as i64, Ordering::Relaxed);
}
drop(jobs_tx);
for h in handles {
let _ = h.join();
}
let mut t = self.tree.write().unwrap();
if cancelled {
t.stats.cancelled = true;
t.stats.unscanned += (self.pending.len() - self.head) as i64;
for &(id, _) in &self.pending[self.head..] {
t.node_mut(id).flags |= inv::FLAG_INCOMPLETE;
}
}
t.stats.complete = true;
t.stats.end = Some(SystemTime::now());
drop(t);
self.counters.pending.store(0, Ordering::Relaxed);
self.counters.inflight.store(0, Ordering::Relaxed);
}
fn make_job(&self, (id, dev): (NodeId, u64)) -> Arc<Job> {
let path = self.tree.read().unwrap().path_bytes(id);
let (in_cache, in_log) = inv::path_hints(&path);
Arc::new(Job { id, path, dev, in_cache, in_log })
}
/// Merges one result into the tree. Reports whether the result completed
/// its directory. Called with the tree write-locked.
fn apply(&mut self, t: &mut Tree, r: ScanResult) -> bool {
let j = &*r.job;
let mut d = Delta::default();
self.counters.entries.fetch_add(r.entries.len() as i64, Ordering::Relaxed);
for m in r.entries {
self.add_entry(t, j, m, &mut d);
}
if r.is_final {
let dn = t.node_mut(j.id);
match r.err {
None => dn.flags |= inv::FLAG_SCANNED,
Some(ReadErr::Cancelled) => {
dn.flags |= inv::FLAG_INCOMPLETE;
t.stats.unscanned += 1;
}
Some(ReadErr::Io(e)) => {
dn.flags |= inv::FLAG_ERROR | inv::FLAG_INCOMPLETE;
t.stats.add_error(ErrorRecord { node: j.id, kind: inv::classify(&e), msg: format!("open: {}", err_msg(&e)), ..Default::default() });
d.errors += 1;
}
}
}
if d != Delta::default() {
t.propagate(j.id, &d);
}
r.is_final
}
fn excluded(&self, path: &[u8], name: &[u8]) -> bool {
self.excludes.iter().any(|(is_path, p)| {
if *is_path {
path == p.as_slice() || path.starts_with(p) && path.get(p.len()) == Some(&b'/') || platform::glob_match(p, path)
} else {
platform::glob_match(p, name)
}
})
}
fn add_entry(&mut self, t: &mut Tree, j: &Job, m: Meta, d: &mut Delta) {
if let Some(e) = &m.err {
let k = inv::classify(e);
if k == inv::ErrKind::Vanished {
t.stats.add_error(ErrorRecord { node: j.id, name: m.name, kind: k, msg: "vanished between listing and stat".into() });
d.errors += 1;
return;
}
let id = t.add(j.id, &m.name, Kind::Other);
let n = t.node_mut(id);
n.flags |= inv::FLAG_ERROR;
n.errors = 1;
t.stats.add_error(ErrorRecord { node: id, kind: k, msg: format!("stat: {}", err_msg(e)), ..Default::default() });
d.errors += 1;
d.files += 1;
t.stats.others += 1;
return;
}
let mut path = Vec::new();
if !self.excludes.is_empty() {
path = platform::join_path(&j.path, &m.name);
if self.excluded(&path, &m.name) {
t.stats.excluded += 1;
return;
}
}
let mut kind = kind_of(&m);
let mut target = None;
let mut broken = false;
if kind == Kind::Symlink {
if path.is_empty() {
path = platform::join_path(&j.path, &m.name);
}
match platform::stat(&path) {
Err(_) => {
t.stats.broken_links += 1;
broken = true;
}
Ok(tm) if platform::mode::is_dir(tm.mode) && tm.has_ino && (self.opts.follow == FollowMode::All || self.opts.follow == FollowMode::SameFs && tm.dev == j.dev) => {
target = Some(tm);
kind = Kind::Dir;
}
Ok(_) => {}
}
}
let id = t.add(j.id, &m.name, kind);
let n = t.node_mut(id);
set_meta(n, &m);
n.tot_size = n.size;
n.tot_alloc = n.alloc;
let ext = n.ext;
let mut flags = if broken { inv::FLAG_BROKEN_LINK } else { 0 };
let st = &mut t.stats;
match kind {
Kind::Dir => {
st.dirs += 1;
d.dirs += 1;
d.size += m.size;
d.alloc += m.alloc;
let mut dev = m.dev;
let mut key = (m.dev, m.ino);
if let Some(tm) = &target {
flags |= inv::FLAG_FOLLOWED;
dev = tm.dev;
key = (tm.dev, tm.ino);
}
let descend = 'check: {
if let Some(v) = &mut self.visited {
if !v.insert(key) {
flags |= inv::FLAG_LOOP;
st.loops_skipped += 1;
break 'check false;
}
}
if m.has_ino && dev != j.dev {
flags |= inv::FLAG_MOUNT_POINT;
if self.opts.one_file_system {
flags |= inv::FLAG_SKIPPED_FS;
st.skipped_mounts += 1;
break 'check false;
}
if path.is_empty() {
path = platform::join_path(&j.path, &m.name);
}
if platform::is_virtual_fs(&path) {
flags |= inv::FLAG_VIRTUAL_FS;
st.virtual_skipped += 1;
break 'check false;
}
}
true
};
if descend {
self.pending.push((id, dev));
}
}
Kind::File => {
st.files += 1;
d.files += 1;
let dup = 'check: {
if m.nlink > 1 && m.has_ino {
flags |= inv::FLAG_HARDLINKED;
if !self.links.insert((m.dev, m.ino)) {
flags |= inv::FLAG_HARDLINK_DUP;
st.hardlink_dups += 1;
break 'check true;
}
}
false
};
if !dup {
if m.alloc_known && m.alloc < m.size && m.size - m.alloc >= 4096 {
flags |= inv::FLAG_SPARSE;
}
let cat = inv::category_for(t.ext_by_index(ext as usize), j.in_cache, j.in_log);
t.node_mut(id).cat = cat;
d.size += m.size;
d.alloc += m.alloc;
d.cat[cat as usize] += m.alloc;
} else {
// Duplicates contribute zero to aggregates.
let n = t.node_mut(id);
n.tot_size = 0;
n.tot_alloc = 0;
}
}
_ => {
if kind == Kind::Symlink {
st.symlinks += 1;
} else {
st.others += 1;
}
d.files += 1;
d.size += m.size;
d.alloc += m.alloc;
}
}
t.node_mut(id).flags |= flags;
}
}
/// The OS error text without Rust's " (os error N)" suffix, matching Go.
fn err_msg(e: &io::Error) -> String {
let s = e.to_string();
match s.rfind(" (os error ") {
Some(i) => s[..i].to_lowercase(),
None => s,
}
}
#[cfg(test)]
pub(crate) mod tests {
use super::*;
use std::os::unix::ffi::OsStrExt;
use std::path::{Path, PathBuf};
pub struct TempDir(pub PathBuf);
impl TempDir {
pub fn new(tag: &str) -> TempDir {
static N: AtomicI64 = AtomicI64::new(0);
let p = std::env::temp_dir().join(format!("mapsize-{tag}-{}-{}", std::process::id(), N.fetch_add(1, Ordering::Relaxed)));
std::fs::create_dir_all(&p).unwrap();
TempDir(p)
}
}
impl Drop for TempDir {
fn drop(&mut self) {
let _ = std::fs::remove_dir_all(&self.0);
}
}
/// Creates a fan-out tree: (files, dirs, bytes).
pub fn mk_tree(dir: &Path, fanout: usize, depth: usize, files: usize) -> (i64, i64, i64) {
fn rec(dir: &Path, d: usize, fanout: usize, depth: usize, files: usize, acc: &mut (i64, i64, i64)) {
for i in 0..files {
let sz = (i + 1) * 100;
std::fs::write(dir.join(format!("f{i}.txt")), vec![0u8; sz]).unwrap();
acc.0 += 1;
acc.2 += sz as i64;
}
if d == depth {
return;
}
for i in 0..fanout {
let sub = dir.join(format!("d{i}"));
std::fs::create_dir(&sub).unwrap();
acc.1 += 1;
rec(&sub, d + 1, fanout, depth, files, acc);
}
}
let mut acc = (0, 0, 0);
rec(dir, 0, fanout, depth, files, &mut acc);
acc
}
pub fn run_scan(root: &Path, o: Options) -> Tree {
let s = start(root.as_os_str().as_bytes(), o, Cancel::new()).unwrap();
s.done().recv_timeout(std::time::Duration::from_secs(60)).expect_err("scan did not finish (deadlock?)");
let t = s.tree.read().unwrap().clone();
t
}
fn totals(t: &Tree) -> Vec<[i64; 4]> {
(0..t.len() as NodeId).map(|i| t.node(i)).map(|n| [n.tot_size, n.tot_alloc, n.files as i64, n.dirs as i64]).collect()
}
#[test]
fn counts_and_aggregates() {
let root = TempDir::new("scan");
let (nf, nd, bytes) = mk_tree(&root.0, 3, 3, 4);
let mut t = run_scan(&root.0, Options { workers: 4, ..Default::default() });
let r = t.node(0);
assert_eq!((r.files as i64, r.dirs as i64), (nf, nd));
let dir_bytes: i64 = (0..t.len() as NodeId).map(|i| t.node(i)).filter(|n| n.is_dir()).map(|n| n.size).sum();
assert_eq!(r.tot_size, bytes + dir_bytes);
assert!(t.stats.complete && !t.stats.incomplete());
for i in 0..t.len() as NodeId {
let n = t.node(i);
if n.is_dir() {
let sum: i64 = n.size + t.children(i).map(|(_, c)| c.tot_size).sum::<i64>();
assert_eq!(sum, n.tot_size, "{}", t.path_string(i));
}
}
let before = totals(&t);
t.recompute();
assert_eq!(before, totals(&t), "incremental aggregates differ from recompute");
}
#[test]
fn backpressure_no_deadlock() {
let root = TempDir::new("bp");
let (nf, nd, _) = mk_tree(&root.0, 6, 4, 3);
for w in [1, 2, 16] {
let t = run_scan(&root.0, Options { workers: w, job_buffer: 1, result_buf: 1, chunk_size: 1, apply_batch: 1, ..Default::default() });
assert_eq!((t.node(0).files as i64, t.node(0).dirs as i64), (nf, nd), "workers={w}");
}
}
#[test]
fn cancel_stops() {
let root = TempDir::new("cancel");
mk_tree(&root.0, 8, 3, 2);
let c = Cancel::new();
let s = start(root.0.as_os_str().as_bytes(), Options { workers: 2, job_buffer: 1, result_buf: 1, chunk_size: 1, ..Default::default() }, c.clone()).unwrap();
c.cancel();
s.done().recv_timeout(std::time::Duration::from_secs(10)).expect_err("cancel did not stop scan");
let t = s.tree.read().unwrap();
assert!(t.stats.cancelled && t.stats.incomplete());
}
#[test]
fn symlink_loops() {
let root = TempDir::new("loop");
let a = root.0.join("a");
std::fs::create_dir_all(a.join("b")).unwrap();
std::fs::write(a.join("b/x"), vec![0u8; 5000]).unwrap();
std::os::unix::fs::symlink("..", a.join("b/up")).unwrap();
std::os::unix::fs::symlink("../a", a.join("self")).unwrap();
std::os::unix::fs::symlink("nowhere", root.0.join("broken")).unwrap();
for f in [FollowMode::None, FollowMode::SameFs, FollowMode::All] {
let t = run_scan(&root.0, Options { workers: 4, follow: f, ..Default::default() });
let r = t.node(0);
assert!(r.files > 0 && r.tot_size > 5000, "{f:?}");
assert_eq!(t.stats.broken_links, 1);
assert!(f == FollowMode::None || t.stats.loops_skipped > 0);
let count = (0..t.len() as NodeId).filter(|&i| &*t.node(i).name == b"x").count();
assert_eq!(count, 1, "{f:?}");
}
}
#[test]
fn hardlinks_counted_once() {
let root = TempDir::new("hl");
let p = root.0.join("orig");
std::fs::write(&p, vec![0u8; 100000]).unwrap();
std::fs::create_dir(root.0.join("d")).unwrap();
std::fs::hard_link(&p, root.0.join("d/link")).unwrap();
let t = run_scan(&root.0, Options { workers: 2, ..Default::default() });
assert_eq!(t.stats.hardlink_dups, 1);
assert!(t.node(0).tot_size < 200000);
}
#[test]
fn permission_errors_surface() {
if unsafe { libc::geteuid() } == 0 {
return;
}
use std::os::unix::fs::PermissionsExt;
let root = TempDir::new("perm");
let locked = root.0.join("locked");
std::fs::create_dir(&locked).unwrap();
std::fs::write(locked.join("f"), b"x").unwrap();
std::fs::set_permissions(&locked, std::fs::Permissions::from_mode(0)).unwrap();
let t = run_scan(&root.0, Options { workers: 2, ..Default::default() });
std::fs::set_permissions(&locked, std::fs::Permissions::from_mode(0o755)).unwrap();
assert_eq!(t.stats.err_counts[inv::ErrKind::Permission as usize], 1);
assert!(t.stats.incomplete());
assert_eq!(t.node(0).errors, 1);
}
#[test]
fn excludes() {
let root = TempDir::new("excl");
std::fs::create_dir_all(root.0.join("keep")).unwrap();
std::fs::create_dir_all(root.0.join("skip")).unwrap();
std::fs::write(root.0.join("keep/a.tmp"), b"x").unwrap();
std::fs::write(root.0.join("keep/b.txt"), b"x").unwrap();
std::fs::write(root.0.join("skip/c.txt"), b"x").unwrap();
let skip = root.0.join("skip").to_string_lossy().into_owned();
let t = run_scan(&root.0, Options { workers: 2, excludes: vec!["*.tmp".into(), skip], ..Default::default() });
assert_eq!((t.stats.excluded, t.node(0).files), (2, 1));
}
#[test]
fn hostile_names_preserved() {
let root = TempDir::new("names");
let names: [&[u8]; 6] = ["日本語.txt".as_bytes(), "emoji-🎉.png".as_bytes(), b"esc\x1b[31mred", b"nl\nname", b"sp ace", b"bad\xffutf8"];
for n in names {
std::fs::write(root.0.join(std::ffi::OsStr::from_bytes(n)), b"x").unwrap();
}
let t = run_scan(&root.0, Options { workers: 2, ..Default::default() });
let got: HashSet<&[u8]> = t.children(0).map(|(_, n)| &*n.name).collect();
for n in names {
assert!(got.contains(n), "missing {n:?}");
}
}
#[test]
fn single_file_root() {
let root = TempDir::new("single");
let p = root.0.join("file");
std::fs::write(&p, vec![0u8; 1234]).unwrap();
let t = run_scan(&p, Options::default());
assert_eq!(t.node(0).tot_size, 1234);
assert_eq!(t.node(0).kind, Kind::File);
}
}
rust/src/snapshot/compare.rs
+160
View File
@@ -0,0 +1,160 @@
use crate::inventory::{sat_add, NodeId, SizeMode, Tree, NO_NODE};
use std::collections::HashMap;
use std::fmt;
/// Relates two inventories by path. It owns the old tree; methods that need
/// the new one take it as a parameter. The new tree must not be mutated
/// while a Diff is in use (snapshots and finished scans satisfy this).
pub struct Diff {
pub old: Tree,
/// Maps a new NodeId to the matching old NodeId, or NO_NODE if the entry
/// is new.
pub old_of: Vec<NodeId>,
/// The topmost old nodes with no counterpart in the new tree.
pub removed: Vec<NodeId>,
/// Per new directory, the sizes of removed children ([allocated,
/// logical]) so growth colouring can account for them.
removed_under: HashMap<NodeId, [i64; 2]>,
}
/// Matches nodes by name, directory by directory, from the roots.
pub fn compare(old: Tree, new: &Tree) -> Diff {
let mut old_of = vec![NO_NODE; new.len()];
let mut removed = Vec::new();
let mut removed_under: HashMap<NodeId, [i64; 2]> = HashMap::new();
let mut stack = vec![(old.root(), new.root())];
while let Some((o, n)) = stack.pop() {
old_of[n as usize] = o;
if !old.node(o).is_dir() || !new.node(n).is_dir() {
continue;
}
let mut by_name: HashMap<&[u8], NodeId> = old.children(o).map(|(id, c)| (&c.name[..], id)).collect();
for (id, c) in new.children(n) {
if let Some(oid) = by_name.remove(&c.name[..]) {
stack.push((oid, id));
}
}
for oid in by_name.into_values() {
removed.push(oid);
let on = old.node(oid);
let r = removed_under.entry(n).or_default();
r[0] = sat_add(r[0], on.tot_alloc);
r[1] = sat_add(r[1], on.tot_size);
}
}
removed.sort_unstable();
Diff { old, old_of, removed, removed_under }
}
/// Classifies a node.
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum Status {
Unchanged,
Added,
Removed,
Grew,
Shrank,
}
impl Status {
pub fn name(self) -> &'static str {
["unchanged", "new", "removed", "increased", "decreased"][self as usize]
}
}
impl fmt::Display for Status {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(self.name())
}
}
/// One row in a change report.
#[derive(Clone, Debug)]
pub struct Change {
pub path: String,
pub status: Status,
pub delta: i64,
pub old: i64,
pub new: i64,
pub node: NodeId, // in the new tree (NO_NODE for removed)
}
impl Diff {
/// The matching old size of a new node, if it existed.
pub fn old_size(&self, id: NodeId, m: SizeMode) -> Option<i64> {
let o = self.old_of[id as usize];
(o != NO_NODE).then(|| self.old.node(o).total(m))
}
/// New minus old size for a new node (full size if new).
pub fn delta(&self, new: &Tree, id: NodeId, m: SizeMode) -> i64 {
new.node(id).total(m) - self.old_size(id, m).unwrap_or(0)
}
/// Classifies a new node.
pub fn status_of(&self, new: &Tree, id: NodeId, m: SizeMode) -> Status {
if self.old_of[id as usize] == NO_NODE {
return Status::Added;
}
match self.delta(new, id, m) {
d if d > 0 => Status::Grew,
d if d < 0 => Status::Shrank,
_ => Status::Unchanged,
}
}
/// The k most significant changes (all if k is 0). A directory is listed
/// only if its change is not almost entirely explained by a single
/// child, so the report points at /var/lib/postgresql rather than /,
/// /var and /var/lib.
pub fn changes(&self, new: &Tree, k: usize, m: SizeMode) -> Vec<Change> {
let mut out = Vec::new();
for id in 0..new.len() as NodeId {
let delta = self.delta(new, id, m);
if delta == 0 {
continue;
}
let n = new.node(id);
if self.old_of[id as usize] != NO_NODE && n.is_dir() && self.explained_by_child(new, id, delta, m) {
continue;
}
if n.parent != NO_NODE && self.old_of[n.parent as usize] == NO_NODE {
continue; // inside a wholly new directory; the directory is listed
}
out.push(Change {
path: new.path_string(id),
status: self.status_of(new, id, m),
delta,
old: self.old_size(id, m).unwrap_or(0),
new: n.total(m),
node: id,
});
}
for &oid in &self.removed {
let o = self.old.node(oid).total(m);
out.push(Change { path: self.old.path_string(oid), status: Status::Removed, delta: -o, old: o, new: 0, node: NO_NODE });
}
out.sort_by(|a, b| b.delta.unsigned_abs().cmp(&a.delta.unsigned_abs()).then_with(|| a.path.cmp(&b.path)));
if k > 0 {
out.truncate(k);
}
out
}
// Products are widened to i128 so saturated (untrusted) totals cannot wrap.
fn explained_by_child(&self, new: &Tree, id: NodeId, delta: i64, m: SizeMode) -> bool {
let whole = delta.unsigned_abs() as i128 * 8;
let by_child = new.children(id).any(|(c, _)| {
let cd = self.delta(new, c, m);
(cd > 0) == (delta > 0) && cd.unsigned_abs() as i128 * 10 >= whole
});
by_child
|| match self.removed_under.get(&id) {
Some(r) => {
let v = if m == SizeMode::Logical { r[1] } else { r[0] };
delta < 0 && v as i128 * 10 >= whole
}
None => false,
}
}
}
rust/src/snapshot/mod.rs
+989
View File
@@ -0,0 +1,989 @@
//! The versioned, checksummed binary inventory format and snapshot
//! comparison.
//!
//! Layout (all integers little-endian / varint):
//!
//! ```text
//! magic 8 bytes brand::SNAPSHOT_MAGIC
//! version uint16 currently 1
//! flags uint16 bit 0: body is gzip-compressed (always set by save)
//! body gzip stream of:
//! meta uvarint length + JSON (root, timestamps, counters, options)
//! exts uvarint count, then count × (uvarint length + bytes)
//! nodes uvarint count, then per node:
//! uvarint parentDelta (id-parent; 0 only for the root)
//! byte kind, byte category, uvarint flags
//! uvarint nameLen + name
//! varint size, varint alloc, varint mtime
//! uvarint mode, uid, gid, nlink, ext
//! errors uvarint count, then per record: uvarint node, byte kind,
//! uvarint len + name, uvarint len + message
//! sha256 32 bytes over the uncompressed body
//! ```
//!
//! Varints are Go's encoding/binary (zig-zag for signed). Nodes are written
//! in ID order; a parent always precedes its children, so a reader can
//! rebuild the tree in one pass and malformed input cannot create cycles.
//! Aggregates are recomputed on load, never trusted.
mod compare;
pub use compare::*;
use crate::brand;
use crate::inventory::{Category, ErrKind, ErrorRecord, Kind, NodeId, Tree, MAX_ERROR_RECORDS, NUM_CATEGORIES};
use crossbeam_channel::Receiver;
use flate2::{bufread::GzDecoder, write::GzEncoder, Compression};
use serde::{Deserialize, Serialize};
use sha2::{Digest, Sha256};
use std::fs::{self, File, OpenOptions};
use std::io::{self, BufReader, BufWriter, Read, Write};
use std::os::unix::fs::OpenOptionsExt;
use std::path::{Path, PathBuf};
use std::time::{Duration, SystemTime, UNIX_EPOCH};
/// The current format version.
pub const VERSION: u16 = 1;
// Limits applied when reading untrusted snapshots.
pub const MAX_NODES: u64 = (1 << 31) - 1;
pub const MAX_DEPTH: u16 = 4096; // far beyond any real path; bounds recursion in exporters
pub const MAX_SIZE: i64 = 1 << 60; // per-node size cap (1 EiB); keeps aggregates from overflowing
/// Caps the decompressed body for load. load_file uses a limit proportional
/// to the file size instead (see body_limit).
pub const DEFAULT_MAX_BODY: i64 = 4 << 30;
pub const MAX_NAME_LEN: u64 = 1 << 16;
pub const MAX_META_LEN: u64 = 16 << 20;
pub const MAX_EXT_LEN: u64 = 64;
pub const MAX_MSG_LEN: u64 = 4096;
const MAX_EXTS: u64 = (1 << 16) - 1;
const FLAG_GZIPPED: u16 = 1;
#[derive(Serialize, Deserialize, Default)]
#[serde(default)]
struct Meta {
root: String,
created: GoTime,
start: GoTime,
end: GoTime,
complete: bool,
cancelled: bool,
files: i64,
dirs: i64,
symlinks: i64,
others: i64,
err_counts: Option<Vec<i64>>,
excluded: i64,
skipped_mounts: i64,
virtual_skipped: i64,
loops_skipped: i64,
broken_links: i64,
hardlink_dups: i64,
unscanned: i64,
excludes: Option<Vec<String>>,
one_file_system: bool,
follow: String,
workers: i64,
host: String,
generator: String,
}
/// Reports whether path starts with the snapshot magic.
pub fn is_snapshot(path: &Path) -> bool {
let mut b = [0u8; 8];
File::open(path).and_then(|mut f| f.read_exact(&mut b)).is_ok() && &b == brand::SNAPSHOT_MAGIC
}
/// Accumulates the body; flushes it through the hash and gzip in chunks.
struct Writer<W: Write> {
gz: GzEncoder<W>,
h: Sha256,
buf: Vec<u8>,
}
impl<W: Write> Writer<W> {
fn bytes(&mut self, b: &[u8]) -> io::Result<()> {
self.buf.extend_from_slice(b);
if self.buf.len() >= 256 << 10 {
self.flush()?;
}
Ok(())
}
fn flush(&mut self) -> io::Result<()> {
self.h.update(&self.buf);
self.gz.write_all(&self.buf)?;
self.buf.clear();
Ok(())
}
fn uvarint(&mut self, mut v: u64) -> io::Result<()> {
let (mut b, mut i) = ([0u8; 10], 0);
while v >= 0x80 {
b[i] = v as u8 | 0x80;
v >>= 7;
i += 1;
}
b[i] = v as u8;
self.bytes(&b[..=i])
}
fn varint(&mut self, v: i64) -> io::Result<()> {
self.uvarint(((v << 1) ^ (v >> 63)) as u64) // zig-zag, as encoding/binary.PutVarint
}
fn str(&mut self, s: &[u8]) -> io::Result<()> {
self.uvarint(s.len() as u64)?;
self.bytes(s)
}
}
/// Writes t to out. The caller holds t's read lock.
pub fn save(out: &mut dyn Write, t: &Tree) -> io::Result<()> {
let mut bw = BufWriter::with_capacity(1 << 20, out);
bw.write_all(brand::SNAPSHOT_MAGIC)?;
bw.write_all(&VERSION.to_le_bytes())?;
bw.write_all(&FLAG_GZIPPED.to_le_bytes())?;
let mut w = Writer { gz: GzEncoder::new(bw, Compression::fast()), h: Sha256::new(), buf: Vec::with_capacity(256 << 10) };
let st = &t.stats;
let m = Meta {
root: String::from_utf8_lossy(&st.root).into_owned(),
created: GoTime::from_system(SystemTime::now()),
start: GoTime::from_system(st.start).local(),
end: st.end.map(|e| GoTime::from_system(e).local()).unwrap_or_default(),
complete: st.complete,
cancelled: st.cancelled,
files: st.files,
dirs: st.dirs,
symlinks: st.symlinks,
others: st.others,
err_counts: Some(st.err_counts.to_vec()),
excluded: st.excluded,
skipped_mounts: st.skipped_mounts,
virtual_skipped: st.virtual_skipped,
loops_skipped: st.loops_skipped,
broken_links: st.broken_links,
hardlink_dups: st.hardlink_dups,
unscanned: st.unscanned,
excludes: Some(st.excludes.clone()),
one_file_system: st.one_file_system,
follow: st.follow.clone(),
workers: st.workers as i64,
host: hostname(),
generator: format!("{} {}", brand::NAME, brand::VERSION),
};
let mb = serde_json::to_vec(&m)?;
w.uvarint(mb.len() as u64)?;
w.bytes(&mb)?;
w.uvarint(t.ext_count() as u64)?;
for i in 0..t.ext_count() {
w.str(t.ext_by_index(i).as_bytes())?;
}
w.uvarint(t.len() as u64)?;
for id in 0..t.len() as NodeId {
let n = t.node(id);
w.uvarint(if id == 0 { 0 } else { (id - n.parent) as u64 })?;
w.bytes(&[n.kind as u8, n.cat as u8])?;
w.uvarint(n.flags as u64)?;
w.str(&n.name)?;
w.varint(n.size)?;
w.varint(n.alloc)?;
w.varint(n.mtime)?;
for v in [n.mode, n.uid, n.gid, n.nlink, n.ext as u32] {
w.uvarint(v as u64)?;
}
}
w.uvarint(st.errors.len() as u64)?;
for e in &st.errors {
w.uvarint(e.node as u64)?;
w.bytes(&[e.kind as u8])?;
w.str(&e.name)?;
w.str(e.msg.as_bytes())?;
}
w.flush()?;
let mut bw = w.gz.finish()?;
bw.write_all(&w.h.finalize())?;
bw.flush()
}
/// Writes a snapshot atomically (temp file + rename).
pub fn save_file(path: &Path, t: &Tree) -> io::Result<()> {
let dir = match path.parent() {
Some(d) if !d.as_os_str().is_empty() => d,
_ => Path::new("."),
};
let (tmp, mut f) = create_temp(dir)?;
let res = save(&mut f, t).and_then(|_| {
drop(f);
fs::rename(&tmp, path)
});
if res.is_err() {
let _ = fs::remove_file(&tmp);
}
res
}
/// Creates a new 0600 file named .mapsize-*.tmp in dir (like os.CreateTemp).
fn create_temp(dir: &Path) -> io::Result<(PathBuf, File)> {
let seed = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default().subsec_nanos() ^ std::process::id();
for i in 0..10000u32 {
let p = dir.join(format!(".mapsize-{}.tmp", seed.wrapping_add(i.wrapping_mul(7919))));
match OpenOptions::new().write(true).create_new(true).mode(0o600).open(&p) {
Ok(f) => return Ok((p, f)),
Err(e) if e.kind() == io::ErrorKind::AlreadyExists => continue,
Err(e) => return Err(e),
}
}
Err(io::Error::new(io::ErrorKind::AlreadyExists, "snapshot: cannot create temporary file"))
}
fn hostname() -> String {
let mut b = [0u8; 256];
if unsafe { libc::gethostname(b.as_mut_ptr() as *mut libc::c_char, b.len()) } != 0 {
return String::new();
}
let n = b.iter().position(|&c| c == 0).unwrap_or(b.len());
String::from_utf8_lossy(&b[..n]).into_owned()
}
/// The decompressed body, fed in chunks by the decompressing thread.
struct Body {
rx: Receiver<Result<Vec<u8>, String>>,
buf: Vec<u8>,
pos: usize,
err: Option<String>,
}
const EOF: &str = "EOF";
const UNEXPECTED_EOF: &str = "unexpected EOF";
impl Body {
fn new(rx: Receiver<Result<Vec<u8>, String>>) -> Body {
Body { rx, buf: Vec::new(), pos: 0, err: None }
}
/// Ensures unread bytes are buffered; false at end of stream.
fn fill(&mut self) -> Result<bool, String> {
while self.pos == self.buf.len() {
if let Some(e) = &self.err {
return Err(e.clone());
}
match self.rx.recv() {
Ok(Ok(b)) => (self.buf, self.pos) = (b, 0),
Ok(Err(e)) => self.err = Some(e),
Err(_) => return Ok(false),
}
}
Ok(true)
}
/// The next byte; Err("EOF") at end of stream.
#[inline]
fn byte(&mut self) -> Result<u8, String> {
if self.pos == self.buf.len() && !self.fill()? {
return Err(EOF.into());
}
self.pos += 1;
Ok(self.buf[self.pos - 1])
}
/// Fills out completely (errors like io.ReadFull).
fn read_full(&mut self, out: &mut [u8]) -> Result<(), String> {
let mut done = 0;
while done < out.len() {
if !self.fill()? {
return Err(if done == 0 { EOF } else { UNEXPECTED_EOF }.into());
}
let k = (out.len() - done).min(self.buf.len() - self.pos);
out[done..done + k].copy_from_slice(&self.buf[self.pos..self.pos + k]);
self.pos += k;
done += k;
}
Ok(())
}
fn byte1(&mut self) -> Result<u8, String> {
self.byte().map_err(|e| format!("snapshot: truncated: {e}"))
}
fn uvarint(&mut self, max: u64, what: &str) -> Result<u64, String> {
let v = read_uvarint(self).map_err(|e| format!("snapshot: bad {what}: {e}"))?;
if v > max {
return Err(format!("snapshot: {what} {v} exceeds limit {max}"));
}
Ok(v)
}
fn varint(&mut self, what: &str) -> Result<i64, String> {
let ux = read_uvarint(self).map_err(|e| format!("snapshot: bad {what}: {e}"))?;
let v = (ux >> 1) as i64; // zig-zag, as encoding/binary.PutVarint
Ok(if ux & 1 != 0 { !v } else { v })
}
fn bytes_n(&mut self, n: u64) -> Result<Vec<u8>, String> {
let mut b = vec![0u8; n as usize];
self.read_full(&mut b).map_err(|e| format!("snapshot: truncated: {e}"))?;
Ok(b)
}
fn str(&mut self, max: u64, what: &str) -> Result<Vec<u8>, String> {
let n = self.uvarint(max, &format!("{what} length"))?;
self.bytes_n(n)
}
}
/// encoding/binary.ReadUvarint over the body.
fn read_uvarint(b: &mut Body) -> Result<u64, String> {
let (mut x, mut s) = (0u64, 0u32);
for i in 0..10 {
let c = match b.byte() {
Ok(c) => c,
Err(e) if i > 0 && e == EOF => return Err(UNEXPECTED_EOF.into()),
Err(e) => return Err(e),
};
if c < 0x80 {
if i == 9 && c > 1 {
break;
}
return Ok(x | (c as u64) << s);
}
x |= ((c & 0x7f) as u64) << s;
s += 7;
}
Err("varint overflows 64 bits".into())
}
const BOMB: &str = "snapshot: decompressed size exceeds limit (possible decompression bomb)";
/// Allows decompressed bodies up to 64× the compressed file size (real
/// snapshots compress ~6×), with a 64 MiB floor for tiny files.
fn body_limit(file_size: i64) -> i64 {
(64 << 20).max(file_size.saturating_mul(64))
}
/// Caps the node count for a file of file_size bytes. Real snapshots spend
/// ~15 compressed bytes per node; a crafted one describes a node in a
/// fraction of a byte, so without this a 1 MB file can demand gigabytes of
/// memory while staying within body_limit.
fn node_limit(file_size: i64) -> u64 {
(1u64 << 20).max(file_size.max(0) as u64)
}
/// Reads and validates a snapshot, allowing up to DEFAULT_MAX_BODY bytes of
/// decompressed data.
pub fn load(r: impl Read) -> Result<Tree, crate::Error> {
load_limit(r, DEFAULT_MAX_BODY)
}
/// load with an explicit decompressed-size limit.
pub fn load_limit(r: impl Read, max_body: i64) -> Result<Tree, crate::Error> {
load_inner(r, max_body, MAX_NODES).map_err(Into::into)
}
/// Opens and loads a snapshot file.
pub fn load_file(path: &Path) -> Result<Tree, crate::Error> {
let f = File::open(path)?;
let (limit, nodes) = match f.metadata() {
Ok(m) => (body_limit(m.len() as i64), node_limit(m.len() as i64)),
Err(_) => (DEFAULT_MAX_BODY, MAX_NODES),
};
load_inner(f, limit, nodes).map_err(Into::into)
}
fn load_inner(input: impl Read, max_body: i64, max_nodes: u64) -> Result<Tree, String> {
let mut br = BufReader::with_capacity(1 << 20, input);
let mut hdr = [0u8; 12];
br.read_exact(&mut hdr).map_err(|_| "snapshot: file too short".to_string())?;
if &hdr[..8] != brand::SNAPSHOT_MAGIC {
return Err(format!("snapshot: not a {} snapshot", brand::NAME));
}
let v = u16::from_le_bytes([hdr[8], hdr[9]]);
if v != VERSION {
return Err(format!("snapshot: unsupported version {v} (this build reads {VERSION})"));
}
if u16::from_le_bytes([hdr[10], hdr[11]]) & FLAG_GZIPPED == 0 {
return Err("snapshot: uncompressed bodies are not supported".into());
}
// Decompression and hashing run on this thread while a scoped thread
// parses, overlapping the two. The parser only sees end of stream once
// the channel's sender is dropped, i.e. after decompression finished.
let mut h = Sha256::new();
let res = {
let mut gz = GzDecoder::new(&mut br); // single member, like gz.Multistream(false)
std::thread::scope(|s| {
let (tx, rx) = crossbeam_channel::bounded(4);
let parser = s.spawn(move || parse(&mut Body::new(rx), max_nodes));
let mut left = max_body;
loop {
if left <= 0 {
let _ = tx.send(Err(BOMB.to_string()));
break;
}
let mut buf = vec![0u8; (256 << 10).min(left as usize)];
match gz.read(&mut buf) {
Ok(0) => break,
Ok(n) => {
buf.truncate(n);
left -= n as i64;
h.update(&buf);
if tx.send(Ok(buf)).is_err() {
break; // parser bailed out
}
}
Err(e) if e.kind() == io::ErrorKind::Interrupted => {}
Err(e) => {
let _ = tx.send(Err(format!("gzip: {e}")));
break;
}
}
}
drop(tx);
parser.join().unwrap_or_else(|p| std::panic::resume_unwind(p))
})
};
let (mut t, m) = res?;
// The checksum follows the gzip stream.
let mut sum = [0u8; 32];
br.read_exact(&mut sum).map_err(|_| "snapshot: missing checksum".to_string())?;
if sum[..] != h.finalize()[..] {
return Err("snapshot: checksum mismatch (file corrupt)".into());
}
t.recompute();
let st = &mut t.stats;
st.start = m.start.to_system();
st.end = (!m.end.is_zero()).then(|| m.end.to_system());
st.complete = true;
st.cancelled = m.cancelled;
(st.files, st.dirs, st.symlinks, st.others) = (m.files, m.dirs, m.symlinks, m.others);
for (d, s) in st.err_counts.iter_mut().zip(m.err_counts.unwrap_or_default()) {
*d = s;
}
(st.excluded, st.skipped_mounts, st.virtual_skipped) = (m.excluded, m.skipped_mounts, m.virtual_skipped);
(st.loops_skipped, st.broken_links, st.hardlink_dups, st.unscanned) =
(m.loops_skipped, m.broken_links, m.hardlink_dups, m.unscanned);
st.excludes = m.excludes.unwrap_or_default();
st.one_file_system = m.one_file_system;
st.follow = m.follow;
st.workers = m.workers.max(0) as usize;
st.from_snapshot = format!("{} ({}, {})", m.created.local_minutes(), m.host, m.generator);
Ok(t)
}
/// Parses the decompressed body up to (and including) its end.
fn parse(r: &mut Body, max_nodes: u64) -> Result<(Tree, Meta), String> {
let n = r.uvarint(MAX_META_LEN, "metadata length")?;
let mb = r.bytes_n(n)?;
let m: Meta = serde_json::from_slice(&mb).map_err(|e| format!("snapshot: metadata: {e}"))?;
let mut t = Tree::new(m.root.as_bytes(), Kind::Dir);
let n_ext = r.uvarint(MAX_EXTS, "extension count")?;
let mut exts = Vec::with_capacity(n_ext.min(1024) as usize);
for _ in 0..n_ext {
exts.push(String::from_utf8_lossy(&r.str(MAX_EXT_LEN, "extension")?).into_owned());
}
let n_nodes = r.uvarint(max_nodes, "node count")?;
if n_nodes == 0 {
return Err("snapshot: no root node".into());
}
let mut depth: Vec<u16> = vec![0]; // per node, for the depth limit; parents precede children
for i in 0..n_nodes {
let pd = r.uvarint(MAX_NODES, "parent")?;
let kind = r.byte1()?;
let cat = r.byte1()?;
let flags = r.uvarint((1 << 16) - 1, "flags")? as u16;
let name = r.str(MAX_NAME_LEN, "name")?;
let (size, alloc, mtime) = (r.varint("size")?, r.varint("alloc")?, r.varint("mtime")?);
let mode = r.uvarint(u32::MAX as u64, "mode")? as u32;
let uid = r.uvarint(u32::MAX as u64, "uid")? as u32;
let gid = r.uvarint(u32::MAX as u64, "gid")? as u32;
let nlink = r.uvarint(u32::MAX as u64, "nlink")? as u32;
let ext = r.uvarint(n_ext, "ext")?;
if kind > Kind::Other as u8 || cat as usize >= NUM_CATEGORIES {
return Err(format!("snapshot: node {i}: invalid kind/category"));
}
let kind = Kind::from_u8(kind);
if size < 0 || alloc < 0 || size > MAX_SIZE || alloc > MAX_SIZE {
return Err(format!("snapshot: node {i}: size out of range"));
}
let id = if i == 0 {
if pd != 0 || kind != Kind::Dir && n_nodes > 1 {
return Err("snapshot: invalid root".into());
}
t.node_mut(0).kind = kind;
0
} else {
if pd == 0 || pd > i {
return Err(format!("snapshot: node {i}: invalid parent reference"));
}
let parent = (i - pd) as NodeId;
if t.node(parent).kind != Kind::Dir {
return Err(format!("snapshot: node {i}: parent is not a directory"));
}
if !valid_name(&name) {
return Err(format!("snapshot: node {i}: invalid name {:?}", String::from_utf8_lossy(&name)));
}
let d = depth[parent as usize] + 1;
if d > MAX_DEPTH {
return Err(format!("snapshot: node {i}: deeper than {MAX_DEPTH} levels"));
}
depth.push(d);
t.add(parent, &name, kind)
};
let n = t.node_mut(id);
n.cat = Category::from_u8(cat);
n.flags = flags;
(n.size, n.alloc, n.mtime) = (size, alloc, mtime);
(n.mode, n.uid, n.gid, n.nlink) = (mode, uid, gid, nlink);
if kind != Kind::Dir && (ext as usize) < exts.len() {
let e = t.intern_ext(&exts[ext as usize]);
t.node_mut(id).ext = e;
}
}
let n_err = r.uvarint(MAX_ERROR_RECORDS as u64, "error count")?;
for _ in 0..n_err {
let node = r.uvarint(n_nodes - 1, "error node")? as NodeId;
let kind = ErrKind::from_u8(r.byte1()?); // out-of-range kinds become Other
let name = r.str(MAX_NAME_LEN, "error name")?;
let msg = String::from_utf8_lossy(&r.str(MAX_MSG_LEN, "error message")?).into_owned();
t.stats.errors.push(ErrorRecord { node, kind, name, msg });
}
// The body must end here.
if r.byte() != Err(EOF.into()) {
return Err("snapshot: trailing data in body".into());
}
Ok((t, m))
}
fn valid_name(s: &[u8]) -> bool {
!s.is_empty() && s != b"." && s != b".." && !s.iter().any(|&c| c == b'/' || c == 0)
}
/// A Go time.Time as JSON carries it: unix seconds plus nanoseconds, and
/// the UTC offset it is written with. The default is Go's zero time
/// (0001-01-01T00:00:00Z).
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
struct GoTime {
secs: i64,
nanos: u32,
off: i32, // seconds east of UTC; presentation only
}
const GO_ZERO_SECS: i64 = -62_135_596_800;
impl Default for GoTime {
fn default() -> Self {
GoTime { secs: GO_ZERO_SECS, nanos: 0, off: 0 }
}
}
impl GoTime {
fn from_system(t: SystemTime) -> GoTime {
match t.duration_since(UNIX_EPOCH) {
Ok(d) => GoTime { secs: d.as_secs() as i64, nanos: d.subsec_nanos(), off: 0 },
Err(e) => {
let d = e.duration();
let (s, n) = (d.as_secs() as i64, d.subsec_nanos());
let (secs, nanos) = if n == 0 { (-s, 0) } else { (-s - 1, 1_000_000_000 - n) };
GoTime { secs, nanos, off: 0 }
}
}
}
/// The same instant in the local time zone (as Go's time.Now()).
fn local(self) -> GoTime {
let off = localtime(self.secs).map_or(0, |tm| tm.tm_gmtoff as i32);
GoTime { off, ..self }
}
fn is_zero(self) -> bool {
(self.secs, self.nanos) == (GO_ZERO_SECS, 0)
}
fn to_system(self) -> SystemTime {
if self.secs >= 0 {
UNIX_EPOCH + Duration::new(self.secs as u64, self.nanos)
} else {
UNIX_EPOCH - Duration::from_secs(self.secs.unsigned_abs()) + Duration::from_nanos(self.nanos as u64)
}
}
/// RFC 3339 with trimmed nanoseconds, like Go's MarshalJSON.
fn format(self) -> String {
let secs = self.secs + self.off as i64;
let (y, mo, d) = civil_from_days(secs.div_euclid(86400));
let rem = secs.rem_euclid(86400);
let mut s = format!("{y:04}-{mo:02}-{d:02}T{:02}:{:02}:{:02}", rem / 3600, rem / 60 % 60, rem % 60);
if self.nanos != 0 {
s += format!(".{:09}", self.nanos).trim_end_matches('0');
}
if self.off == 0 {
return s + "Z";
}
let a = self.off.unsigned_abs() / 60;
format!("{s}{}{:02}:{:02}", if self.off < 0 { '-' } else { '+' }, a / 60, a % 60)
}
/// Parses RFC 3339 ("2026-10-08T10:40:00.123456789+01:00").
fn parse(s: &str) -> Option<GoTime> {
let b = s.as_bytes();
let num = |r: std::ops::Range<usize>| -> Option<i64> {
let p = b.get(r)?;
p.iter().all(u8::is_ascii_digit).then(|| p.iter().fold(0i64, |a, &c| a * 10 + (c - b'0') as i64))
};
if b.len() < 20 || b[4] != b'-' || b[7] != b'-' || b[10] != b'T' || b[13] != b':' || b[16] != b':' {
return None;
}
let (y, mo, d, h, mi, se) = (num(0..4)?, num(5..7)?, num(8..10)?, num(11..13)?, num(14..16)?, num(17..19)?);
if !(1..=12).contains(&mo) || !(1..=31).contains(&d) || h > 23 || mi > 59 || se > 59 {
return None;
}
let mut i = 19;
let mut nanos = 0u32;
if b[i] == b'.' {
let start = i + 1;
i = start;
while i < b.len() && b[i].is_ascii_digit() {
if i - start < 9 {
nanos = nanos * 10 + (b[i] - b'0') as u32;
}
i += 1;
}
if i == start {
return None;
}
for _ in (i - start)..9 {
nanos *= 10;
}
}
let off = match b.get(i)? {
b'Z' if b.len() == i + 1 => 0,
&c @ (b'+' | b'-') if b.len() == i + 6 && b[i + 3] == b':' => {
let (oh, om) = (num(i + 1..i + 3)?, num(i + 4..i + 6)?);
if oh > 23 || om > 59 {
return None;
}
(oh * 3600 + om * 60) * if c == b'-' { -1 } else { 1 }
}
_ => return None,
};
let secs = days_from_civil(y, mo, d) * 86400 + h * 3600 + mi * 60 + se - off;
Some(GoTime { secs, nanos, off: off as i32 })
}
/// "2006-01-02 15:04" in local time.
fn local_minutes(self) -> String {
let Some(tm) = localtime(self.secs) else { return self.format() };
format!("{:04}-{:02}-{:02} {:02}:{:02}", tm.tm_year as i64 + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min)
}
}
fn localtime(secs: i64) -> Option<libc::tm> {
let t = secs as libc::time_t;
let mut tm: libc::tm = unsafe { std::mem::zeroed() };
(!unsafe { libc::localtime_r(&t, &mut tm) }.is_null()).then_some(tm)
}
impl Serialize for GoTime {
fn serialize<S: serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
s.serialize_str(&self.format())
}
}
impl<'de> Deserialize<'de> for GoTime {
fn deserialize<D: serde::Deserializer<'de>>(d: D) -> Result<Self, D::Error> {
// null leaves the zero time, as in Go.
match Option::<String>::deserialize(d)? {
None => Ok(GoTime::default()),
Some(s) => GoTime::parse(&s).ok_or_else(|| serde::de::Error::custom(format!("parsing time {s:?}"))),
}
}
}
/// Civil-from-days (Howard Hinnant).
fn civil_from_days(days: i64) -> (i64, i64, i64) {
let z = days + 719468;
let era = z.div_euclid(146097);
let doe = z - era * 146097;
let yoe = (doe - doe / 1460 + doe / 36524 - doe / 146096) / 365;
let doy = doe - (365 * yoe + yoe / 4 - yoe / 100);
let mp = (5 * doy + 2) / 153;
let d = doy - (153 * mp + 2) / 5 + 1;
let m = if mp < 10 { mp + 3 } else { mp - 9 };
(yoe + era * 400 + (m <= 2) as i64, m, d)
}
fn days_from_civil(y: i64, m: i64, d: i64) -> i64 {
let y = if m <= 2 { y - 1 } else { y };
let era = y.div_euclid(400);
let yoe = y - era * 400;
let doy = (153 * ((m + 9) % 12) + 2) / 5 + d - 1;
let doe = yoe * 365 + yoe / 4 - yoe / 100 + doy;
era * 146097 + doe - 719468
}
#[cfg(test)]
mod tests {
use super::*;
use crate::inventory::{SizeMode, FLAG_SPARSE};
use std::collections::HashMap;
fn sample() -> Tree {
let mut t = Tree::new(b"/srv", Kind::Dir);
let a = t.add(0, b"a", Kind::Dir);
let b = t.add(0, b"b", Kind::Dir);
let f1 = t.add(a, b"x.iso", Kind::File);
(t.node_mut(f1).size, t.node_mut(f1).alloc) = (1000, 1024);
let f2 = t.add(b, b"y.log", Kind::File);
(t.node_mut(f2).size, t.node_mut(f2).alloc) = (50, 4096);
t.node_mut(f2).flags = FLAG_SPARSE;
t.recompute();
(t.stats.files, t.stats.dirs) = (2, 3);
t.stats.add_error(ErrorRecord { node: b, kind: ErrKind::Permission, msg: "denied".into(), ..Default::default() });
t
}
fn saved(t: &Tree) -> Vec<u8> {
let mut buf = Vec::new();
save(&mut buf, t).unwrap();
buf
}
#[test]
fn round_trip() {
let src = sample();
let got = load(&saved(&src)[..]).unwrap();
assert_eq!(got.len(), src.len());
for i in 0..src.len() as NodeId {
let (a, b) = (src.node(i), got.node(i));
assert!(
a.name == b.name && a.tot_size == b.tot_size && a.tot_alloc == b.tot_alloc && a.flags == b.flags
&& src.path(i) == got.path(i) && src.ext_name(a) == got.ext_name(b),
"node {i} differs: {a:?} vs {b:?}"
);
}
assert_eq!(got.stats.err_counts[ErrKind::Permission as usize], 1);
assert_eq!(got.stats.errors.len(), 1);
assert_eq!(got.stats.start, src.stats.start);
assert_eq!(got.stats.end, None);
}
#[test]
fn corruption_detected() {
let data = saved(&sample());
let mut bad = data.clone();
*bad.last_mut().unwrap() ^= 0xff; // flip a byte in the checksum trailer
assert!(load(&bad[..]).is_err(), "checksum corruption not detected");
// Every truncation must fail cleanly.
for i in (0..data.len() - 1).step_by(7) {
assert!(load(&data[..i]).is_err(), "truncation at {i} accepted");
}
}
#[test]
fn compare_trees() {
let old = sample();
let mut nw = Tree::new(b"/srv", Kind::Dir);
let a = nw.add(0, b"a", Kind::Dir);
let f1 = nw.add(a, b"x.iso", Kind::File);
(nw.node_mut(f1).size, nw.node_mut(f1).alloc) = (5000, 5120);
let c = nw.add(0, b"c", Kind::Dir);
let f3 = nw.add(c, b"z", Kind::File);
(nw.node_mut(f3).size, nw.node_mut(f3).alloc) = (10, 4096);
nw.recompute();
let d = compare(old, &nw);
let al = SizeMode::Allocated;
assert_eq!(d.status_of(&nw, f1, al), Status::Grew);
assert_eq!(d.delta(&nw, f1, al), 4096);
assert_eq!(d.status_of(&nw, c, al), Status::Added);
assert_eq!(d.removed.len(), 1);
assert_eq!(&d.old.node(d.removed[0]).name[..], b"b");
let ch = d.changes(&nw, 10, al);
let paths: HashMap<&str, Status> = ch.iter().map(|c| (c.path.as_str(), c.status)).collect();
assert_eq!(paths.get("/srv/a/x.iso"), Some(&Status::Grew), "{ch:?}");
assert_eq!(paths.get("/srv/b"), Some(&Status::Removed), "{ch:?}");
assert_eq!(paths.get("/srv/c"), Some(&Status::Added), "{ch:?}");
assert!(!paths.contains_key("/srv/a"), "/srv/a should be explained by its child");
assert!(!paths.contains_key("/srv/c/z"), "contents of new dirs should not be listed separately");
}
fn body(b: &[u8]) -> Body {
let (tx, rx) = crossbeam_channel::unbounded();
tx.send(Ok(b.to_vec())).unwrap();
Body::new(rx)
}
fn put_uvarint(v: u64) -> Vec<u8> {
let mut w = Writer { gz: GzEncoder::new(Vec::new(), Compression::fast()), h: Sha256::new(), buf: Vec::new() };
w.uvarint(v).unwrap();
w.buf
}
#[test]
fn read_uvarint_matches_go() {
for v in [0, 1, 127, 128, 300, 1 << 35, u64::MAX] {
assert_eq!(read_uvarint(&mut body(&put_uvarint(v))), Ok(v));
}
assert_eq!(put_uvarint(300), [0xac, 0x02]);
assert!(read_uvarint(&mut body(&[0xff; 11])).is_err(), "overflow not detected");
// Zig-zag as Go's PutVarint.
for (v, enc) in [(0i64, 0u64), (-1, 1), (1, 2), (-2, 3), (i64::MIN, u64::MAX)] {
assert_eq!(((v << 1) ^ (v >> 63)) as u64, enc);
assert_eq!(body(&put_uvarint(enc)).varint("v"), Ok(v));
}
}
#[test]
fn go_time_json() {
let t = GoTime::parse("2026-10-08T10:40:00.123456789+01:00").unwrap();
assert_eq!((t.secs, t.nanos, t.off), (1_791_452_400, 123_456_789, 3600));
assert_eq!(t.format(), "2026-10-08T10:40:00.123456789+01:00");
assert_eq!(GoTime { off: 0, ..t }.format(), "2026-10-08T09:40:00.123456789Z");
assert_eq!(GoTime { off: -5 * 3600 - 1800, ..t }.format(), "2026-10-08T04:10:00.123456789-05:30");
assert_eq!(GoTime::parse("2026-10-08T09:40:00.1Z").unwrap().format(), "2026-10-08T09:40:00.1Z");
assert_eq!(GoTime::parse("0001-01-01T00:00:00Z"), Some(GoTime::default()));
assert_eq!(GoTime::default().format(), "0001-01-01T00:00:00Z");
assert_eq!(GoTime::from_system(GoTime::default().to_system()), GoTime::default());
for bad in ["", "2026-10-08", "2026-13-08T00:00:00Z", "2026-10-08T00:00:00", "2026-10-08T00:00:00.Z"] {
assert_eq!(GoTime::parse(bad), None, "{bad}");
}
}
/// A tiny tree saved by the Go binary
/// (tree/{a/x.iso 10000 B, a/b/note.txt, c/y.log 3000 B, c/link -> ../a}).
#[test]
fn loads_go_snapshot() {
let t = load_file(Path::new(concat!(env!("CARGO_MANIFEST_DIR"), "/src/snapshot/testdata/go.msz"))).unwrap();
let r = t.node(0);
assert_eq!((r.tot_size, r.tot_alloc), (13310, 20480));
assert_eq!((t.stats.files, t.stats.dirs, t.stats.symlinks), (3, 4, 1));
assert_eq!(t.len(), 8);
assert!(t.stats.root.ends_with(b"/tree"));
assert!(t.stats.end.is_some() && t.stats.complete);
assert!(t.stats.from_snapshot.contains("mapsize"), "{}", t.stats.from_snapshot);
let iso = (0..t.len() as NodeId).find(|&i| &t.node(i).name[..] == b"x.iso").unwrap();
assert_eq!(t.node(iso).size, 10000);
assert_eq!(t.ext_name(t.node(iso)), "iso");
assert!(t.path_string(iso).ends_with("/tree/a/x.iso"));
// And it survives a Rust round trip unchanged.
let again = load(&saved(&t)[..]).unwrap();
assert_eq!((again.node(0).tot_size, again.len(), again.stats.start), (13310, 8, t.stats.start));
}
// Hostile input.
/// Builds a well-formed (correctly checksummed) but hostile snapshot.
fn craft(n: usize, meta: &str, rec: impl Fn(usize, &mut Writer<Vec<u8>>)) -> Vec<u8> {
let mut out = Vec::new();
out.extend_from_slice(brand::SNAPSHOT_MAGIC);
out.extend_from_slice(&VERSION.to_le_bytes());
out.extend_from_slice(&FLAG_GZIPPED.to_le_bytes());
let mut w = Writer { gz: GzEncoder::new(out, Compression::best()), h: Sha256::new(), buf: Vec::new() };
w.uvarint(meta.len() as u64).unwrap();
w.bytes(meta.as_bytes()).unwrap();
w.uvarint(1).unwrap();
w.str(b"").unwrap();
w.uvarint(n as u64).unwrap();
for i in 0..n {
rec(i, &mut w);
}
w.uvarint(0).unwrap();
w.flush().unwrap();
let mut out = w.gz.finish().unwrap();
let sum = w.h.finalize();
out.extend_from_slice(&sum);
out
}
fn node(w: &mut Writer<Vec<u8>>, pd: u64, kind: Kind, name: &str, size: i64) {
w.uvarint(pd).unwrap();
w.bytes(&[kind as u8, 0]).unwrap();
w.uvarint(0).unwrap();
w.str(name.as_bytes()).unwrap();
w.varint(size).unwrap();
w.varint(size).unwrap();
w.varint(0).unwrap();
for _ in 0..5 {
w.uvarint(0).unwrap();
}
}
fn chain(n: usize) -> Vec<u8> {
craft(n, r#"{"root":"/r"}"#, |i, w| if i == 0 { node(w, 0, Kind::Dir, "", 0) } else { node(w, 1, Kind::Dir, "a", 0) })
}
#[test]
fn deep_chain_rejected() {
load(&chain(MAX_DEPTH as usize + 1)[..]).expect("depth at the limit must load");
let err = load(&chain(MAX_DEPTH as usize + 2)[..]).err().expect("over-deep chain accepted");
assert!(err.to_string().contains("deeper"), "{err}");
}
#[test]
fn decompression_bomb_limited() {
let flat = craft(100_000, r#"{"root":"/r"}"#, |i, w| {
if i == 0 { node(w, 0, Kind::Dir, "", 0) } else { node(w, i as u64, Kind::File, "f", 0) }
});
let err = load_limit(&flat[..], 64 << 10).err().expect("bomb not limited");
assert!(err.to_string().contains("limit"), "{err}");
assert!(body_limit(flat.len() as i64) >= 64 << 20, "body_limit floor");
}
#[test]
fn huge_sizes_do_not_wrap() {
let data = craft(3, r#"{"root":"/r"}"#, |i, w| {
if i == 0 { node(w, 0, Kind::Dir, "", 0) } else { node(w, i as u64, Kind::File, "f", MAX_SIZE) }
});
let tr = load(&data[..]).unwrap();
assert!(tr.node(0).tot_size >= 0, "aggregate wrapped negative");
let over = craft(2, r#"{"root":"/r"}"#, |i, w| {
if i == 0 { node(w, 0, Kind::Dir, "", 0) } else { node(w, 1, Kind::File, "f", MAX_SIZE + 1) }
});
assert!(load(&over[..]).is_err(), "size above MAX_SIZE accepted");
}
#[test]
fn hostile_metadata_sanitised_in_summary() {
let data = craft(1, r#"{"root":"/r\u001b[2J","excludes":["\u001b]0;PWNED\u0007"],"excluded":1}"#, |_, w| {
node(w, 0, Kind::Dir, "", 0)
});
let mut tr = load(&data[..]).unwrap();
tr.stats.excluded = 1;
let mut b = Vec::new();
crate::export::summary(&mut b, &tr).unwrap();
assert!(!b.iter().any(|&c| c == 0x1b || c == 0x07), "raw control characters in summary: {:?}", String::from_utf8_lossy(&b));
}
/// Blocks of one directory plus K-1 files repeat byte for byte, so a
/// small file describes millions of nodes; load_file must refuse before
/// allocating.
#[test]
fn node_amplification_limited() {
const K: usize = 1000;
const N: usize = 1_200_001;
let data = craft(N, r#"{"root":"/r"}"#, |i, w| match i {
0 => node(w, 0, Kind::Dir, "", 0),
1 => node(w, 1, Kind::Dir, "d", 0),
_ if (i - 1) % K == 0 => node(w, K as u64, Kind::Dir, "d", 0),
_ => node(w, ((i - 1) % K) as u64, Kind::File, "f", 0),
});
load(&data[..]).expect("crafted tree is otherwise valid");
let p = std::env::temp_dir().join(format!("mapsize-amp-{}.msz", std::process::id()));
fs::write(&p, &data).unwrap();
let res = load_file(&p);
let _ = fs::remove_file(&p);
let err = res.err().unwrap_or_else(|| panic!("{N} nodes from a {}-byte file accepted", data.len()));
assert!(err.to_string().contains("node count"), "{err}");
}
#[test]
fn save_file_is_atomic_and_detected() {
let dir = std::env::temp_dir().join(format!("mapsize-save-{}", std::process::id()));
fs::create_dir_all(&dir).unwrap();
let p = dir.join("s.msz");
save_file(&p, &sample()).unwrap();
assert!(is_snapshot(&p));
assert_eq!(load_file(&p).unwrap().len(), 5);
assert_eq!(fs::read_dir(&dir).unwrap().count(), 1, "temp file left behind");
fs::remove_dir_all(&dir).unwrap();
}
}
rust/src/snapshot/testdata/go.msz
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rust/src/textutil.rs
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//! Display helpers: sanitising untrusted strings for the terminal,
//! width-aware truncation, and human-readable units.
use std::fmt::Write;
use std::sync::atomic::{AtomicBool, Ordering};
use std::time::Duration;
use unicode_segmentation::UnicodeSegmentation;
use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
/// Makes an untrusted string (a filename, snapshot data) safe to write to a
/// terminal. Control characters (C0, DEL, C1) and bidi overrides become
/// visible escapes; invalid UTF-8 becomes U+FFFD. Keep the original bytes
/// for filesystem operations.
pub fn sanitize_bytes(s: &[u8]) -> String {
if s.iter().all(|&c| (0x20..0x7f).contains(&c)) {
// SAFETY-free: printable ASCII is valid UTF-8.
return String::from_utf8(s.to_vec()).unwrap();
}
let mut b = String::with_capacity(s.len() + 8);
for chunk in s.utf8_chunks() {
for r in chunk.valid().chars() {
let c = r as u32;
if c < 0x20 || c == 0x7f || (0x80..=0x9f).contains(&c) {
let _ = write!(b, "\\x{c:02x}");
} else if is_bidi_control(c) {
let _ = write!(b, "\\u{c:04x}");
} else {
b.push(r);
}
}
for _ in chunk.invalid() {
b.push('\u{FFFD}');
}
}
b
}
/// sanitize_bytes for strings.
pub fn sanitize(s: &str) -> String {
sanitize_bytes(s.as_bytes())
}
fn is_bidi_control(r: u32) -> bool {
(0x202a..=0x202e).contains(&r) || (0x2066..=0x2069).contains(&r) || r == 0x200e || r == 0x200f || r == 0x061c
}
/// Calls f for each grapheme cluster of s with its display width. Clusters
/// whose width terminals disagree on (per-char wcwidth versus grapheme
/// width, e.g. emoji ZWJ sequences) are replaced by U+FFFD with width 1, and
/// zero-width clusters are dropped, so measuring and drawing always agree
/// with the terminal. f returns false to stop.
pub fn clusters(s: &str, mut f: impl FnMut(&str, usize) -> bool) {
for c in s.graphemes(true) {
let mut chars = c.chars();
let first = chars.next().unwrap();
let w = if chars.next().is_none() { first.width().unwrap_or(0) } else { c.width() };
if w == 0 {
continue;
}
let ok = if c.len() > 1 && c.chars().map(|r| r.width().unwrap_or(0)).sum::<usize>() != w {
f("\u{FFFD}", 1)
} else {
f(c, w)
};
if !ok {
return;
}
}
}
/// Display width of s in terminal cells.
pub fn width(s: &str) -> usize {
if s.bytes().all(|c| (0x20..0x7f).contains(&c)) {
return s.len();
}
let mut n = 0;
clusters(s, |_, w| {
n += w;
true
});
n
}
/// Clips s to at most w cells, appending "…" if anything was cut.
pub fn truncate(s: &str, w: usize) -> String {
if w == 0 {
return String::new();
}
if width(s) <= w {
return s.to_string();
}
clip(s, w - 1) + "…"
}
/// Clips from the left, prefixing "…" (for paths and breadcrumbs where the
/// tail is the informative part).
pub fn truncate_left(s: &str, w: usize) -> String {
if w == 0 {
return String::new();
}
let total = width(s);
if total <= w {
return s.to_string();
}
let mut skip = (total - (w - 1)) as isize;
let mut b = String::from("…");
clusters(s, |c, cw| {
if skip > 0 {
skip -= cw as isize;
if skip < 0 {
// A wide cluster overshot by one cell; pad to keep width exact.
b.push_str(&" ".repeat((-skip) as usize));
}
return true;
}
b.push_str(c);
true
});
b
}
/// The longest prefix of s that fits in w cells.
fn clip(s: &str, w: usize) -> String {
let mut b = String::new();
let mut used = 0;
clusters(s, |c, cw| {
if used + cw > w {
return false;
}
used += cw;
b.push_str(c);
true
});
b
}
/// Pads s with spaces to exactly w cells (truncating if longer).
pub fn pad_right(s: &str, w: usize) -> String {
let mut s = truncate(s, w);
let sw = width(&s);
if sw < w {
s.push_str(&" ".repeat(w - sw));
}
s
}
/// Right-aligns s in w cells.
pub fn pad_left(s: &str, w: usize) -> String {
let s = truncate(s, w);
let sw = width(&s);
if sw < w {
return " ".repeat(w - sw) + &s;
}
s
}
static SI: AtomicBool = AtomicBool::new(false);
/// Selects decimal units (kB, MB, …) instead of IEC (KiB, MiB, …). Set once
/// at start-up.
pub fn set_si(v: bool) {
SI.store(v, Ordering::Relaxed);
}
/// Whether decimal units are selected.
pub fn si() -> bool {
SI.load(Ordering::Relaxed)
}
const IEC_UNITS: [&str; 7] = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB"];
const SI_UNITS: [&str; 7] = ["B", "kB", "MB", "GB", "TB", "PB", "EB"];
fn scaled(n: i64) -> (f64, &'static str) {
let (base, units) = if si() { (1000.0, &SI_UNITS) } else { (1024.0, &IEC_UNITS) };
let neg = n < 0;
let mut v = (n as f64).abs();
let mut i = 0;
while v >= base && i < units.len() - 1 {
v /= base;
i += 1;
}
(if neg { -v } else { v }, units[i])
}
fn num(v: f64, unit: &str) -> String {
let a = v.abs();
if unit == "B" {
format!("{v:.0}")
} else if a < 10.0 {
format!("{v:.2}")
} else if a < 100.0 {
format!("{v:.1}")
} else {
format!("{v:.0}")
}
}
/// Formats a byte count, e.g. "86.4 GiB".
pub fn size(n: i64) -> String {
let (v, u) = scaled(n);
num(v, u) + " " + u
}
/// Formats a byte count in at most ~7 cells, e.g. "86GiB".
pub fn size_compact(n: i64) -> String {
let (v, u) = scaled(n);
if u != "B" && v.abs() < 10.0 {
format!("{v:.1}{u}")
} else {
format!("{v:.0}{u}")
}
}
/// Formats a delta with an explicit sign.
pub fn signed_size(n: i64) -> String {
match n {
n if n > 0 => "+".to_string() + &size(n),
n if n < 0 => "-".to_string() + &size(n.saturating_neg()),
_ => "±0 B".to_string(),
}
}
/// Formats an integer with thousands separators.
pub fn count(n: i64) -> String {
let s = n.unsigned_abs().to_string();
let mut out = String::with_capacity(s.len() + s.len() / 3 + 1);
if n < 0 {
out.push('-');
}
for (i, c) in s.chars().enumerate() {
if i > 0 && (s.len() - i) % 3 == 0 {
out.push(',');
}
out.push(c);
}
out
}
/// Formats an elapsed time as mm:ss or h:mm:ss.
pub fn duration(d: Duration) -> String {
let s = d.as_secs();
if s >= 3600 {
format!("{}:{:02}:{:02}", s / 3600, s / 60 % 60, s % 60)
} else {
format!("{:02}:{:02}", s / 60, s % 60)
}
}
/// Formats part/whole as a percentage.
pub fn percent(part: i64, whole: i64) -> String {
if whole <= 0 {
return "–".to_string();
}
let p = part as f64 * 100.0 / whole as f64;
if p < 10.0 {
format!("{p:.1}%")
} else {
format!("{p:.0}%")
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn sanitize_cases() {
let cases: [(&[u8], &str); 8] = [
(b"plain.txt", "plain.txt"),
(b"evil\x1b[2Jname", r"evil\x1b[2Jname"),
(b"bell\x07", r"bell\x07"),
("c1\u{009b}x".as_bytes(), r"c1\x9bx"),
(b"bad\xffutf8", "bad\u{FFFD}utf8"),
("rtl\u{202e}gnp.exe".as_bytes(), "rtl\\u202egnp.exe"),
("日本語".as_bytes(), "日本語"),
(b"tab\tnew\nline\rdel\x7f", r"tab\x09new\x0aline\x0ddel\x7f"),
];
for (input, want) in cases {
let got = sanitize_bytes(input);
assert_eq!(got, want);
assert!(!got.contains(['\x1b', '\x07', '\u{009b}']));
}
}
#[test]
fn truncation() {
assert_eq!(truncate("hello world", 5), "hell…");
assert!(width(&truncate("日本語テキスト", 5)) <= 5);
assert_eq!(truncate("abc", 3), "abc");
assert_eq!(truncate("abc", 0), "");
let got = truncate_left("/a/very/long/path", 8);
assert!(width(&got) == 8 && got.ends_with("path"), "{got}");
assert_eq!(width(&truncate_left("ab日本語", 4)), 4);
}
#[test]
fn sizes() {
for (n, want) in [(0, "0 B"), (1023, "1023 B"), (1024, "1.00 KiB"), (1536, "1.50 KiB"), (181 << 30, "181 GiB"), (1 << 62, "4.00 EiB")] {
assert_eq!(size(n), want);
}
assert_eq!(count(2184392), "2,184,392");
assert_eq!(signed_size(-2048), "-2.00 KiB");
}
#[test]
fn clusters_agree_with_width() {
for s in ["abc", "日本", "é", "👨‍👩‍👧", "🎉x", "\u{200b}"] {
let mut n = 0;
clusters(s, |_, w| {
n += w;
true
});
assert_eq!(n, width(s), "{s:?}");
}
}
}
/// Formats unix nanoseconds as an RFC 3339 UTC timestamp, e.g.
/// "2026-10-08T09:30:00Z".
pub fn rfc3339_utc(unix_nanos: i64) -> String {
let secs = unix_nanos.div_euclid(1_000_000_000);
let (days, rem) = (secs.div_euclid(86400), secs.rem_euclid(86400));
// Civil-from-days (Howard Hinnant).
let z = days + 719468;
let era = z.div_euclid(146097);
let doe = z - era * 146097;
let yoe = (doe - doe / 1460 + doe / 36524 - doe / 146096) / 365;
let doy = doe - (365 * yoe + yoe / 4 - yoe / 100);
let mp = (5 * doy + 2) / 153;
let d = doy - (153 * mp + 2) / 5 + 1;
let m = if mp < 10 { mp + 3 } else { mp - 9 };
let y = yoe + era * 400 + (m <= 2) as i64;
format!("{y:04}-{m:02}-{d:02}T{:02}:{:02}:{:02}Z", rem / 3600, rem / 60 % 60, rem % 60)
}
/// Formats a duration like Go's time.Duration.String after rounding to
/// milliseconds, e.g. "1.234s", "250ms", "2m3.5s".
pub fn go_duration(d: Duration) -> String {
let ms = (d.as_nanos() + 500_000) / 1_000_000;
if ms == 0 {
return "0s".into();
}
if ms < 1000 {
return format!("{ms}ms");
}
let (h, m, s) = (ms / 3_600_000, ms / 60_000 % 60, ms % 60_000);
let mut secs = format!("{}.{:03}", s / 1000, s % 1000);
while secs.ends_with('0') {
secs.pop();
}
if secs.ends_with('.') {
secs.pop();
}
match (h, m) {
(0, 0) => format!("{secs}s"),
(0, m) => format!("{m}m{secs}s"),
(h, m) => format!("{h}h{m}m{secs}s"),
}
}
#[cfg(test)]
mod time_tests {
use super::*;
#[test]
fn formats() {
assert_eq!(rfc3339_utc(0), "1970-01-01T00:00:00Z");
assert_eq!(rfc3339_utc(1_791_456_000 * 1_000_000_000), "2026-10-08T10:40:00Z");
assert_eq!(go_duration(Duration::from_micros(1_234_400)), "1.234s");
assert_eq!(go_duration(Duration::from_millis(250)), "250ms");
assert_eq!(go_duration(Duration::from_millis(123_500)), "2m3.5s");
}
}
rust/src/treemap/mod.rs
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//! Pure geometry: squarified layout on a cell grid, level-of-detail
//! selection and spatial neighbour search. No knowledge of filesystems or
//! terminals.
mod nav;
pub use nav::{neighbour, Direction};
/// An integer cell rectangle.
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
pub struct Rect {
pub x: i32,
pub y: i32,
pub w: i32,
pub h: i32,
}
impl Rect {
/// Whether the rectangle has no cells.
pub fn empty(&self) -> bool {
self.w <= 0 || self.h <= 0
}
/// w*h.
pub fn area(&self) -> i32 {
self.w.max(0) * self.h.max(0)
}
/// Whether the cell (x, y) is inside.
pub fn contains(&self, x: i32, y: i32) -> bool {
x >= self.x && x < self.x + self.w && y >= self.y && y < self.y + self.h
}
/// Shrinks by n cells on each side.
pub fn inset(&self, n: i32) -> Rect {
Rect { x: self.x + n, y: self.y + n, w: (self.w - 2 * n).max(0), h: (self.h - 2 * n).max(0) }
}
}
/// Something to lay out. Size must be > 0 to receive space.
#[derive(Clone, Copy, Debug)]
pub struct Item {
pub id: i64,
pub size: f64,
}
/// A laid-out item.
#[derive(Clone, Copy, Debug, PartialEq)]
pub struct Block {
pub id: i64,
pub rect: Rect,
}
/// Lays items out inside bounds using the squarified treemap algorithm
/// (Bruls, Huizing, van Wijk). Items with non-positive or non-finite size are
/// ignored. The output partitions bounds exactly: rectangle edges are snapped
/// to the grid by rounding shared float edges, so there are no gaps and no
/// overlaps. Items that round to zero width or height are omitted. The result
/// is deterministic for a given input set regardless of input order.
pub fn squarify(items: &[Item], bounds: Rect) -> Vec<Block> {
if bounds.empty() {
return Vec::new();
}
let mut its: Vec<Item> = items.iter().copied().filter(|it| it.size > 0.0 && it.size.is_finite()).collect();
let total: f64 = its.iter().map(|it| it.size).sum();
if its.is_empty() || total <= 0.0 {
return Vec::new();
}
its.sort_by(|a, b| b.size.total_cmp(&a.size).then(a.id.cmp(&b.id)));
let scale = bounds.w as f64 * bounds.h as f64 / total;
let areas: Vec<f64> = its.iter().map(|it| it.size * scale).collect();
let frs = layout(&areas, bounds.x as f64, bounds.y as f64, bounds.w as f64, bounds.h as f64);
let mut out = Vec::with_capacity(its.len());
for (it, f) in its.iter().zip(frs) {
let (x0, y0) = (f[0].round() as i32, f[1].round() as i32);
let x1 = ((f[0] + f[2]).round() as i32).min(bounds.x + bounds.w);
let y1 = ((f[1] + f[3]).round() as i32).min(bounds.y + bounds.h);
if x1 > x0 && y1 > y0 {
out.push(Block { id: it.id, rect: Rect { x: x0, y: y0, w: x1 - x0, h: y1 - y0 } });
}
}
out
}
/// The worst aspect ratio of a row with the given sum, largest and smallest
/// areas laid along a side of length side.
fn worst(sum: f64, largest: f64, smallest: f64, side: f64) -> f64 {
let (s2, w2) = (sum * sum, side * side);
(w2 * largest / s2).max(s2 / (w2 * smallest))
}
/// Float rectangles [x, y, w, h] for areas sorted descending.
fn layout(areas: &[f64], mut x: f64, mut y: f64, mut w: f64, mut h: f64) -> Vec<[f64; 4]> {
let n = areas.len();
let mut out = vec![[0.0; 4]; n];
let mut i = 0;
while i < n {
let short = w.min(h);
let mut j = i + 1;
let mut sum = areas[i];
let mut cur = worst(sum, areas[i], areas[i], short);
while j < n {
let s2 = sum + areas[j];
let nw = worst(s2, areas[i], areas[j], short);
if nw > cur {
break;
}
cur = nw;
sum = s2;
j += 1;
}
let last = j == n;
if w >= h {
let mut thick = sum / h;
if last || thick > w {
thick = w;
}
let mut yy = y;
for k in i..j {
let hh = if k == j - 1 { y + h - yy } else { areas[k] / sum * h };
out[k] = [x, yy, thick, hh];
yy += hh;
}
x += thick;
w -= thick;
} else {
let mut thick = sum / w;
if last || thick > h {
thick = h;
}
let mut xx = x;
for k in i..j {
let ww = if k == j - 1 { x + w - xx } else { areas[k] / sum * w };
out[k] = [xx, y, ww, thick];
xx += ww;
}
y += thick;
h -= thick;
}
i = j;
}
out
}
/// How many leading items of a size-sorted (descending) list deserve their
/// own block when area cells represent total: items are kept while each
/// would get at least min_area cells and fewer than max_items have been
/// kept. The remainder should be merged into one group block.
pub fn visible(sizes: &[f64], total: f64, area: i32, min_area: i32, max_items: usize) -> usize {
if total <= 0.0 || area <= 0 {
return 0;
}
let cells = |s: f64| s / total * area as f64;
let mut k = 0;
while k < sizes.len() && k < max_items {
if cells(sizes[k]) < min_area as f64 {
break;
}
k += 1;
}
// Grouping a single leftover item gains nothing; show it directly if it
// gets at least one cell.
if k + 1 == sizes.len() && k < max_items && cells(sizes[k]) >= 1.0 {
k += 1;
}
k
}
/// The block containing the cell (x, y).
pub fn at(blocks: &[Block], x: i32, y: i32) -> Option<i64> {
blocks.iter().find(|b| b.rect.contains(x, y)).map(|b| b.id)
}
#[cfg(test)]
pub(crate) mod tests {
use super::*;
pub fn r(x: i32, y: i32, w: i32, h: i32) -> Rect {
Rect { x, y, w, h }
}
pub fn it(id: i64, size: f64) -> Item {
Item { id, size }
}
/// Small deterministic PRNG for property checks (splitmix64).
pub struct Rng(u64);
impl Rng {
pub fn new(seed: u64) -> Rng {
Rng(seed)
}
pub fn intn(&mut self, n: u64) -> u64 {
self.0 = self.0.wrapping_add(0x9E3779B97F4A7C15);
let mut z = self.0;
z = (z ^ (z >> 30)).wrapping_mul(0xBF58476D1CE4E5B9);
z = (z ^ (z >> 27)).wrapping_mul(0x94D049BB133111EB);
(z ^ (z >> 31)) % n
}
}
fn check_partition(blocks: &[Block], b: Rect, exact: bool) {
let mut grid = vec![false; (b.w * b.h) as usize];
for bl in blocks {
let br = bl.rect;
assert!(br.w > 0 && br.h > 0, "non-positive block {bl:?}");
assert!(br.x >= b.x && br.y >= b.y && br.x + br.w <= b.x + b.w && br.y + br.h <= b.y + b.h, "block {bl:?} outside bounds {b:?}");
for y in br.y..br.y + br.h {
for x in br.x..br.x + br.w {
let i = ((y - b.y) * b.w + (x - b.x)) as usize;
assert!(!grid[i], "overlap at {x},{y}");
grid[i] = true;
}
}
}
if exact {
if let Some(i) = grid.iter().position(|v| !v) {
panic!("gap at {},{}", b.x + i as i32 % b.w, b.y + i as i32 / b.w);
}
}
}
#[test]
fn squarify_basic() {
let b = r(2, 3, 60, 20);
let items = [it(1, 6.0), it(2, 6.0), it(3, 4.0), it(4, 3.0), it(5, 2.0), it(6, 2.0), it(7, 1.0)];
let blocks = squarify(&items, b);
assert_eq!(blocks.len(), items.len());
check_partition(&blocks, b, true);
// Areas roughly proportional.
for bl in &blocks {
let want = b.area() as f64 * items[(bl.id - 1) as usize].size / 24.0;
let got = bl.rect.area() as f64;
assert!(got >= want * 0.6 - 4.0 && got <= want * 1.4 + 4.0, "block {} area {got} want ~{want}", bl.id);
}
// Deterministic regardless of input order.
let mut rev = items.to_vec();
rev.reverse();
assert_eq!(blocks, squarify(&rev, b), "layout depends on input order");
}
#[test]
fn squarify_edge_cases() {
assert!(squarify(&[], r(0, 0, 10, 10)).is_empty());
assert!(squarify(&[it(1, 0.0), it(2, -5.0)], r(0, 0, 10, 10)).is_empty(), "zero sizes should produce nothing");
assert!(squarify(&[it(1, f64::NAN), it(2, f64::INFINITY)], r(0, 0, 10, 10)).is_empty());
for b in [r(0, 0, 0, 0), r(0, 0, 1, 1), r(0, 0, 1, 50), r(0, 0, 50, 1), r(0, 0, -3, 4)] {
let bl = squarify(&[it(1, 5.0), it(2, 3.0), it(3, 1.0)], b);
if !b.empty() {
check_partition(&bl, b, true);
}
}
// One enormous item and many tiny ones.
let mut items = vec![it(0, 1e15)];
items.extend((1..500).map(|i| it(i, 1.0)));
check_partition(&squarify(&items, r(0, 0, 80, 24)), r(0, 0, 80, 24), true);
}
#[test]
fn resize_recomputes() {
let items = [it(1, 50.0), it(2, 30.0), it(3, 20.0)];
for b in [r(0, 0, 80, 24), r(0, 0, 120, 40), r(0, 0, 300, 80), r(0, 0, 70, 20), r(0, 0, 180, 50)] {
let bl = squarify(&items, b);
check_partition(&bl, b, true);
assert_eq!(bl.len(), 3, "{b:?}");
}
}
/// The Go fuzz target's property, run over fixed seeds.
#[test]
fn squarify_random_partitions() {
let mut rng = Rng::new(1);
for _ in 0..300 {
let (w, h, n) = (rng.intn(400) as i32, rng.intn(150) as i32, rng.intn(3000) as usize);
let items: Vec<Item> = (0..n)
.map(|i| {
let bits = rng.intn(40) + 1;
it(i as i64, rng.intn(1 << bits) as f64)
})
.collect();
let b = r(rng.intn(10) as i32, rng.intn(10) as i32, w, h);
let bl = squarify(&items, b);
if !b.empty() && !bl.is_empty() {
check_partition(&bl, b, true);
}
}
}
#[test]
fn visible_counts() {
let sizes = [100.0, 50.0, 10.0, 1.0, 1.0, 1.0];
assert_eq!(visible(&sizes, 163.0, 1630, 20, 100), 3);
assert_eq!(visible(&sizes, 163.0, 1630, 20, 2), 2, "max_items");
assert_eq!(visible(&[10.0, 1.0], 11.0, 1100, 200, 10), 2, "single leftover");
}
#[test]
fn at_finds_block() {
let bl = [Block { id: 1, rect: r(0, 0, 5, 5) }, Block { id: 2, rect: r(5, 0, 5, 5) }];
assert_eq!(at(&bl, 6, 2), Some(2));
assert_eq!(at(&bl, 10, 2), None);
}
}
rust/src/treemap/nav.rs
+141
View File
@@ -0,0 +1,141 @@
use super::Block;
/// An arrow-key direction.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum Direction {
Left,
Right,
Up,
Down,
}
/// Finds the block a user expects to reach by pressing an arrow key from the
/// block with id sel:
///
/// 1. Only blocks entirely beyond the selected block's edge in the
/// direction of travel are candidates.
/// 2. Blocks whose span overlaps the selected block's orthogonal span are
/// strongly preferred over all others.
/// 3. Then the smallest gap along the direction of travel wins.
/// 4. Then the largest overlap with the selected block's span.
/// 5. Then the block whose orthogonal span is closest to the selected
/// block's centre line (0 if it contains it).
/// 6. Ties break by position (top, then left) and finally id.
///
/// None if there is no block in that direction.
pub fn neighbour(blocks: &[Block], sel: i64, d: Direction) -> Option<i64> {
let s = blocks.iter().find(|b| b.id == sel)?.rect;
// Lexicographic score, smaller is better; overlap is negated so larger wins.
let mut best: Option<(i32, i32, i32, i32, i32, i32, i64)> = None;
for b in blocks {
if b.id == sel {
continue;
}
let c = b.rect;
let (ok, gap, lo, hi, clo, chi) = match d {
Direction::Right => (c.x >= s.x + s.w, c.x - (s.x + s.w), s.y, s.y + s.h, c.y, c.y + c.h),
Direction::Left => (c.x + c.w <= s.x, s.x - (c.x + c.w), s.y, s.y + s.h, c.y, c.y + c.h),
Direction::Down => (c.y >= s.y + s.h, c.y - (s.y + s.h), s.x, s.x + s.w, c.x, c.x + c.w),
Direction::Up => (c.y + c.h <= s.y, s.y - (c.y + c.h), s.x, s.x + s.w, c.x, c.x + c.w),
};
if !ok {
continue;
}
let ovl = hi.min(chi) - lo.max(clo);
let (tier, ovl) = if ovl > 0 { (0, ovl) } else { (1, 0) };
// Distance (doubled, to stay integral) from the selected centre line
// to the candidate's span; 0 if the span contains it.
let centre = lo + hi;
let off = if centre < 2 * clo {
2 * clo - centre
} else if centre > 2 * chi {
centre - 2 * chi
} else {
0
};
let sc = (tier, gap, -ovl, off, c.y, c.x, b.id);
if best.is_none_or(|b| sc < b) {
best = Some(sc);
}
}
best.map(|b| b.6)
}
#[cfg(test)]
mod tests {
use super::super::tests::{it, r, Rng};
use super::super::*;
use super::Direction::*;
fn blk(id: i64, x: i32, y: i32, w: i32, h: i32) -> Block {
Block { id, rect: r(x, y, w, h) }
}
// Layout:
//
// ┌───────┬───────┐
// │ A │ B │
// ├───┬───┴───────┤
// │ C │ D │
// └───┴───────────┘
#[test]
fn neighbour_basic() {
let a = blk(1, 0, 0, 8, 4);
let b = blk(2, 8, 0, 8, 4);
let c = blk(3, 0, 4, 4, 4);
let d = blk(4, 4, 4, 12, 4);
let bs = [d, c, b, a]; // order must not matter
let cases = [
(1, Right, Some(2)), (2, Left, Some(1)), (1, Down, Some(3)), (2, Down, Some(4)),
(3, Right, Some(4)), (4, Left, Some(3)), (3, Up, Some(1)), (4, Up, Some(2)),
(1, Left, None), (1, Up, None), (4, Right, None), (4, Down, None),
];
for (from, dir, want) in cases {
assert_eq!(neighbour(&bs, from, dir), want, "from {from} dir {dir:?}");
}
}
#[test]
fn neighbour_prefers_adjacent_over_array_order() {
// S is on the left; R is directly right; F is far right and lower but
// appears first in the slice.
let s = blk(1, 0, 0, 10, 5);
let rr = blk(2, 10, 0, 10, 5);
let f = blk(3, 10, 20, 30, 5);
assert_eq!(neighbour(&[f, s, rr], 1, Right), Some(2));
// Tall block on the left with three stacked blocks to the right: pick
// the one at the centre line.
let t = blk(10, 0, 0, 10, 9);
let r1 = blk(11, 10, 0, 10, 3);
let r2 = blk(12, 10, 3, 10, 3);
let r3 = blk(13, 10, 6, 10, 3);
assert_eq!(neighbour(&[r3, r1, r2, t], 10, Right), Some(12), "centre preference");
assert_eq!(neighbour(&[r3, r1, r2, t], 13, Left), Some(10), "back left");
}
#[test]
fn neighbour_random_layouts_always_adjacent() {
let mut rng = Rng::new(7);
for iter in 0..200 {
let n = 2 + rng.intn(30) as i64;
let items: Vec<Item> = (0..n).map(|i| it(i, (1 + rng.intn(1000)) as f64)).collect();
let bl = squarify(&items, r(0, 0, 120, 40));
for s in &bl {
for d in [Left, Right, Up, Down] {
let Some(id) = neighbour(&bl, s.id, d) else { continue };
let c = bl.iter().find(|b| b.id == id).unwrap().rect;
let s = s.rect;
// In a partition, if any block touches the edge in direction d
// with overlapping span, the chosen one must touch too.
let touch = match d {
Right => c.x == s.x + s.w,
Left => c.x + c.w == s.x,
Down => c.y == s.y + s.h,
Up => c.y + c.h == s.y,
};
assert!(touch, "iter {iter}: from {s:?} dir {d:?} chose non-adjacent {c:?}");
}
}
}
}
}
rust/src/tui/actions.rs
+268
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@@ -0,0 +1,268 @@
//! Mutating and long-running actions: trash/delete and duplicate search.
use super::canvas::{Canvas, Style, BOLD};
use super::modals::{new_info_modal, ConfirmModal};
use super::model::{Cmd, Model, Msg};
use super::san;
use super::table::{col, Table, TableRow};
use crate::cancel::Cancel;
use crate::duplicate::{self, Finder};
use crate::inventory::{Delta, NodeId, Tree, FLAG_DELETED, NO_NODE};
use crate::platform::{self, Expect};
use crate::textutil;
use crate::treemap::Rect;
use std::sync::{Arc, RwLock};
// ---- Trash ---------------------------------------------------------------
impl Model {
/// Asks for confirmation before moving the selection to the trash. On a
/// headless system (no desktop, so nobody empties the trash and the space
/// is never freed) it deletes permanently instead, after a confirmation
/// that says so.
pub fn request_trash(&mut self, tr: &Tree) -> Cmd {
if self.opts.read_only {
return self.warn("Read-only mode: modifying actions are disabled");
}
if self.snapshot {
return self.warn("Snapshot view: nothing to delete on the live filesystem");
}
if self.scanning {
return self.warn("Wait for the scan to finish before deleting items");
}
let id = self.selected_node(tr);
if id == NO_NODE || id == 0 {
return Cmd::None;
}
let n = tr.node(id);
let path = tr.path(id);
let want = Expect { uid: n.uid, mode: n.mode };
let what = if n.is_dir() { format!("directory with {} files", textutil::count(n.files as i64)) } else { "file".into() };
let mut body = vec![san(&tr.path_bytes(id)), String::new(), format!("{what} · {}", textutil::size(n.total(self.size_mode))), String::new()];
if platform::headless() {
body.push("This is a headless system (no X or Wayland display), so there is no trash:".into());
body.push("it will be permanently deleted and cannot be recovered.".into());
self.open_modal(Box::new(ConfirmModal {
ttl: "Delete permanently? Are you sure?".into(),
body,
yes: "delete permanently".into(),
on_yes: Some(Box::new(move |m: &mut Model| {
let t = m.tree.clone();
Cmd::run(move || {
let err = platform::delete(&path, want).err().map(|e| e.to_string());
Msg::TrashDone { tree: t, id, err, done: "Deleted".into() }
})
})),
}));
return Cmd::None;
}
body.push(format!("It will be moved to the {}, not permanently deleted.", platform::TRASH_NAME));
self.open_modal(Box::new(ConfirmModal {
ttl: "Move to trash?".into(),
body,
yes: format!("move to {}", platform::TRASH_NAME),
on_yes: Some(Box::new(move |m: &mut Model| {
let t = m.tree.clone();
Cmd::run(move || {
let err = platform::trash(&path, want).err().map(|e| e.to_string());
Msg::TrashDone { tree: t, id, err, done: format!("Moved to {}", platform::TRASH_NAME) }
})
})),
}));
Cmd::None
}
pub fn trash_done(&mut self, tree: Arc<RwLock<Tree>>, id: NodeId, err: Option<String>, done: String) -> Cmd {
if let Some(e) = err {
return self.warn(format!("Delete failed: {}", textutil::sanitize(&e)));
}
if !Arc::ptr_eq(&tree, &self.tree) || self.scanning {
// A rescan replaced the inventory; the new scan reflects the change.
return self.info(done);
}
// The scan has finished, so the UI thread is the tree's only writer.
let name = {
let mut t = self.tree.write().unwrap();
let n = t.node(id).clone();
let mut d = Delta { size: -n.tot_size, alloc: -n.tot_alloc, files: -(n.files as i64), dirs: -(n.dirs as i64), ..Default::default() };
if n.is_dir() {
d.dirs -= 1;
if let Some(cs) = t.cat_sizes(id) {
for (c, v) in d.cat.iter_mut().zip(cs) {
*c = -v;
}
}
} else {
d.files -= 1;
d.cat[n.cat as usize] = -n.tot_alloc;
}
t.propagate(n.parent, &d);
let nm = t.node_mut(id);
nm.flags |= FLAG_DELETED;
(nm.tot_size, nm.tot_alloc) = (0, 0);
n.name
};
self.invalidate();
self.info(format!("{done}: {}", san(&name)))
}
// ---- Duplicates ----------------------------------------------------------
pub fn start_duplicates(&mut self) -> Cmd {
if self.snapshot {
return self.warn("Duplicate detection needs the live filesystem");
}
if self.scanning {
return self.warn("Wait for the scan to finish first");
}
if self.dups.is_some() {
self.ensure_dup_view();
return Cmd::None;
}
self.open_modal(Box::new(ConfirmModal {
ttl: "Find duplicate files?".into(),
body: vec![
"Files are grouped by size, then sampled, then fully hashed with SHA-256.".into(),
"Only identical hashes are reported as duplicates.".into(),
String::new(),
"This reads file contents (it may take a while and can update access times).".into(),
],
yes: "start".into(),
on_yes: Some(Box::new(|m: &mut Model| {
let cancel = Cancel::new();
let f = Arc::new(Finder::default());
m.dups = Some(DupState { running: true, finder: f.clone(), groups: Vec::new(), err: None, cancel: cancel.clone() });
m.ensure_dup_view();
let t = m.tree.clone();
let tick = m.start_ticking();
Cmd::batch(vec![
tick,
Cmd::run(move || {
let g = f.find(&cancel, &t, duplicate::Options { min_size: 1, workers: 4 });
Msg::DupDone { finder: f, groups: g }
}),
])
})),
}));
Cmd::None
}
pub fn ensure_dup_view(&mut self) {
if let Some(i) = self.views.iter().position(|v| matches!(v, super::views::View::Dups(_))) {
self.set_view(i);
return;
}
self.views.push(super::views::View::Dups(DupView::default()));
self.set_view(self.views.len() - 1);
}
pub fn dup_done(&mut self, finder: Arc<Finder>, groups: Option<Vec<duplicate::Group>>) -> Cmd {
let Some(d) = self.dups.as_mut().filter(|d| Arc::ptr_eq(&d.finder, &finder)) else { return Cmd::None };
d.running = false;
d.err = groups.is_none().then(|| "cancelled".to_string());
d.groups = groups.unwrap_or_default();
let (n, wasted) = (d.groups.len(), d.groups.iter().map(|g| g.wasted()).sum::<i64>());
self.dirty = true;
self.info(format!("Duplicates: {n} verified groups, {} reclaimable", textutil::size(wasted)))
}
}
pub(crate) struct DupState {
pub running: bool,
pub finder: Arc<Finder>,
pub groups: Vec<duplicate::Group>,
pub err: Option<String>,
pub cancel: Cancel,
}
#[derive(Default)]
pub(crate) struct DupView {
pub tb: Table,
pub rows: Vec<(usize, NodeId)>, // (group, file); NO_NODE for a group header
}
impl DupView {
pub fn paint(&mut self, m: &mut Model, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = m.theme.clone();
let Some(d) = &m.dups else {
cv.text_centered(r.x, r.y + r.h / 2, r.w, "Press D to search for duplicates", t.muted());
return;
};
if d.running {
let p = d.finder.progress();
cv.fill(r, " ", t.base());
let y = r.y + r.h / 2 - 2;
cv.text_centered(r.x, y, r.w, &format!("Finding duplicates — {}…", p.stage), Style::new(t.accent, t.bg).with(BOLD));
cv.text_centered(r.x, y + 2, r.w,
&format!("{} candidate files in {} size groups", textutil::count(p.candidates), textutil::count(p.candidate_groups)), t.base());
if p.bytes_to_hash > 0 {
let frac = p.bytes_hashed as f64 / p.bytes_to_hash as f64;
let bw = 60.min(r.w - 10);
m.paint_bar(cv, r.x + (r.w - bw) / 2, y + 4, bw, frac, t.accent, false);
cv.text_centered(r.x, y + 5, r.w,
&format!("{} of {} hashed · {} skipped", textutil::size(p.bytes_hashed), textutil::size(p.bytes_to_hash), textutil::count(p.skipped)),
t.muted());
}
return;
}
self.rows.clear();
let mut rows = Vec::new();
for (gi, g) in d.groups.iter().enumerate() {
self.rows.push((gi, NO_NODE));
let hash: String = g.hash[..8].iter().map(|b| format!("{b:02x}")).collect();
rows.push(TableRow {
cells: vec![textutil::size(g.wasted()), format!("{} × {}", g.files.len(), textutil::size(g.size)),
format!("verified identical · sha256 {hash}…")],
styles: vec![Some(Style::new(t.warn, t.bg).with(BOLD)), Some(Style::new(t.fg, t.bg).with(BOLD)), Some(Style::new(t.ok, t.bg))],
bar: -1.0,
..Default::default()
});
for &id in &g.files {
self.rows.push((gi, id));
rows.push(TableRow { cells: vec![String::new(), String::new(), format!(" {}", san(&tr.path_bytes(id)))], bar: -1.0, ..Default::default() });
}
}
let mut title = format!("Duplicates — {} groups (Enter details · Space go to)", d.groups.len());
if let Some(e) = &d.err {
title += &format!(" — stopped: {}", textutil::sanitize(e));
}
let cols = [col("WASTED", 10, true, false), col("COPIES", 16, false, false), col("", 0, false, false)];
self.tb.paint(m, cv, r, &cols, &rows, &title);
}
pub fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd) {
if self.tb.key(k, self.rows.len()) {
return (true, Cmd::None);
}
if self.tb.at() < self.rows.len() {
let (g, mut id) = self.rows[self.tb.at()];
if id == NO_NODE {
if let Some(d) = m.dups.as_ref().filter(|d| g < d.groups.len()) {
id = d.groups[g].files[0];
}
}
if id != NO_NODE {
match k {
"enter" => {
let md = new_info_modal(m, tr, id);
m.open_modal(md);
return (true, Cmd::None);
}
"space" => {
m.jump_to(tr, id);
return (true, Cmd::None);
}
"c" | "o" | "d" => m.sel = id as i64,
_ => {}
}
}
}
if k == "esc" {
if let Some(d) = m.dups.as_ref().filter(|d| d.running) {
d.cancel.cancel();
return (true, Cmd::None);
}
}
(false, Cmd::None)
}
}
rust/src/tui/bench.rs
+126
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//! Benchmark hooks: the model driven with no terminal, rendering in
//! true colour, as the Go benchmarks do.
use super::model::{Key, Model, Msg, Options, Profile};
use crate::cancel::Cancel;
use crate::config::Settings;
use crate::inventory::{Category, Kind, NodeId, SizeMode, Tree};
use std::sync::{Arc, RwLock};
/// A model with no terminal. Every method that renders returns the frame
/// length so the work cannot be optimised away.
pub struct BenchModel {
m: Model,
}
pub(crate) fn opts_for(tree: Arc<RwLock<Tree>>) -> Options {
Options {
read_only: false,
theme: String::new(),
size_mode: SizeMode::Allocated,
mouse: false,
color: String::new(),
save: String::new(),
settings: Settings::default(),
start: Arc::new(move |_| Ok((None, tree.clone()))),
diff: None,
}
}
impl BenchModel {
pub fn new(tree: Arc<RwLock<Tree>>, w: u16, h: u16) -> BenchModel {
let mut m = Model::new(opts_for(tree.clone()), None, tree, Cancel::new());
m.profile = Profile::TrueColor;
m.update(Msg::Size(w as i32, h as i32));
BenchModel { m }
}
/// Invalidates the data caches and renders: sorting children, LOD
/// selection, layout and paint.
pub fn cold_frame(&mut self) -> usize {
self.m.invalidate();
self.m.view().len()
}
/// Resizes and renders (child lists stay cached).
pub fn resize(&mut self, w: u16, h: u16) -> usize {
self.m.update(Msg::Size(w as i32, h as i32));
self.m.view().len()
}
/// Sends a key ("right", "down", "left", "up", …) and renders.
pub fn key(&mut self, k: &str) -> usize {
self.m.update(Msg::Key(Key::from_name(k)));
self.m.view().len()
}
/// Makes the root's child with this name the zoom root.
pub fn zoom_to_child_named(&mut self, name: &[u8]) {
let t = self.m.tree.clone();
let g = t.read().unwrap();
if let Some((id, _)) = g.children(0).find(|(_, n)| &*n.name == name) {
self.m.zoom = id;
}
}
/// Sets the query and runs the filter synchronously.
pub fn apply_filter(&mut self, q: &str) {
self.m.search.ed.set(q);
let _ = self.m.query_changed();
for msg in self.m.apply_filter().run_sync() {
self.m.update(msg);
}
}
}
/// A small deterministic PRNG (splitmix64).
struct Rng(u64);
impl Rng {
fn next(&mut self) -> u64 {
self.0 = self.0.wrapping_add(0x9e37_79b9_7f4a_7c15);
let mut z = self.0;
z = (z ^ (z >> 30)).wrapping_mul(0xbf58_476d_1ce4_e5b9);
z = (z ^ (z >> 27)).wrapping_mul(0x94d0_49bb_1331_11eb);
z ^ (z >> 31)
}
/// Uniform in (0, 1].
fn unit(&mut self) -> f64 {
((self.next() >> 11) + 1) as f64 / (1u64 << 53) as f64
}
fn exp(&mut self) -> f64 {
-self.unit().ln()
}
fn intn(&mut self, n: u64) -> u64 {
self.next() % n
}
}
/// ~1M nodes in memory: 200 top-level dirs with 40 subdirectories of 100
/// files each, plus one flat directory with 200k files.
pub fn big_tree() -> Tree {
let mut r = Rng(1);
let mut t = Tree::new(b"/big", Kind::Dir);
let mut file = |t: &mut Tree, p: NodeId, i: usize| {
let id = t.add(p, format!("f{i}.dat").as_bytes(), Kind::File);
let n = t.node_mut(id);
n.size = (r.exp() * 1e6) as i64;
n.alloc = n.size;
n.cat = Category::from_u8(r.intn(crate::inventory::NUM_CATEGORIES as u64) as u8);
};
let flat = t.add(0, b"flat", Kind::Dir);
for i in 0..200_000 {
file(&mut t, flat, i);
}
for d in 0..200 {
let top = t.add(0, format!("dir{d}").as_bytes(), Kind::Dir);
for s in 0..40 {
let sub = t.add(top, format!("sub{s}").as_bytes(), Kind::Dir);
for f in 0..100 {
file(&mut t, sub, f);
}
}
}
t.recompute();
t
}
rust/src/tui/canvas.rs
+360
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//! An in-memory cell grid that every view paints into; serialised once per
//! frame with minimal SGR changes.
use super::color256::{quant16, quant256};
use crate::textutil;
use crate::treemap::Rect;
use std::fmt::Write;
/// 0 for the terminal default, otherwise 0x01RRGGBB.
#[derive(Clone, Copy, PartialEq, Eq, Hash, Default, Debug)]
pub(crate) struct Color(pub u32);
/// Builds a colour.
pub(crate) const fn rgb(r: u8, g: u8, b: u8) -> Color {
Color(1 << 24 | (r as u32) << 16 | (g as u32) << 8 | b as u32)
}
impl Color {
/// Parses "#rrggbb".
pub fn hex(s: &str) -> Option<Color> {
let s = s.strip_prefix('#').unwrap_or(s);
if s.len() != 6 || !s.bytes().all(|b| b.is_ascii_hexdigit()) {
return None;
}
u32::from_str_radix(s, 16).ok().map(|v| Color(1 << 24 | v))
}
pub fn is_default(self) -> bool {
self.0 == 0
}
pub fn r(self) -> u8 {
(self.0 >> 16) as u8
}
pub fn g(self) -> u8 {
(self.0 >> 8) as u8
}
pub fn b(self) -> u8 {
self.0 as u8
}
pub fn comps(self) -> (f64, f64, f64) {
(self.r() as f64 / 255.0, self.g() as f64 / 255.0, self.b() as f64 / 255.0)
}
/// Blends c towards o by t (0..1). Default colours are returned as-is.
pub fn mix(self, o: Color, t: f64) -> Color {
if self.0 == 0 || o.0 == 0 {
return self;
}
let (r1, g1, b1) = self.comps();
let (r2, g2, b2) = o.comps();
let f = |a: f64, b: f64| ((a + (b - a) * t) * 255.0) as u8;
rgb(f(r1, r2), f(g1, g2), f(b1, b2))
}
/// Perceived brightness 0..1.
pub fn luma(self) -> f64 {
let (r, g, b) = self.comps();
0.299 * r + 0.587 * g + 0.114 * b
}
}
/// Text attribute bit set.
pub(crate) type Attr = u8;
pub(crate) const BOLD: Attr = 1;
pub(crate) const FAINT: Attr = 2;
pub(crate) const ITALIC: Attr = 4;
pub(crate) const UNDERLINE: Attr = 8;
pub(crate) const REVERSE: Attr = 16;
/// A cell style.
#[derive(Clone, Copy, PartialEq, Eq, Default, Debug)]
pub(crate) struct Style {
pub fg: Color,
pub bg: Color,
pub attr: Attr,
}
impl Style {
pub const fn new(fg: Color, bg: Color) -> Style {
Style { fg, bg, attr: 0 }
}
pub const fn with(self, a: Attr) -> Style {
Style { attr: self.attr | a, ..self }
}
}
const INLINE: usize = 15;
const HEAP: u8 = 255;
/// One grid cell. The cluster is stored inline (n bytes) or, if longer,
/// in the canvas side table (n == HEAP, index in the first four bytes).
/// n == 0 marks the continuation of a wide cluster.
#[derive(Clone, Copy)]
struct Cell {
g: [u8; INLINE],
n: u8,
w: u8,
st: Style,
}
impl Cell {
fn space(st: Style) -> Cell {
let mut g = [0; INLINE];
g[0] = b' ';
Cell { g, n: 1, w: 1, st }
}
fn is_cont(&self) -> bool {
self.n == 0
}
fn set_space(&mut self) {
self.g[0] = b' ';
self.n = 1;
self.w = 1;
}
}
/// Box glyph sets.
#[derive(Clone, Copy)]
pub(crate) struct BoxChars {
pub h: &'static str,
pub v: &'static str,
pub tl: &'static str,
pub tr: &'static str,
pub bl: &'static str,
pub br: &'static str,
}
pub(crate) const BOX_LIGHT: BoxChars = BoxChars { h: "─", v: "│", tl: "┌", tr: "┐", bl: "└", br: "┘" };
pub(crate) const BOX_ROUND: BoxChars = BoxChars { h: "─", v: "│", tl: "╭", tr: "╮", bl: "╰", br: "╯" };
pub(crate) const BOX_DOUBLE: BoxChars = BoxChars { h: "═", v: "║", tl: "╔", tr: "╗", bl: "╚", br: "╝" };
pub(crate) const BOX_ASCII: BoxChars = BoxChars { h: "-", v: "|", tl: "+", tr: "+", bl: "+", br: "+" };
pub(crate) const BOX_ASCII_SEL: BoxChars = BoxChars { h: "=", v: "#", tl: "#", tr: "#", bl: "#", br: "#" };
/// Selects how colours are serialised.
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub(crate) enum Depth {
True,
C256,
C16,
None, // attributes only
}
/// An in-memory cell grid.
pub(crate) struct Canvas {
pub w: i32,
pub h: i32,
c: Vec<Cell>,
big: Vec<String>,
}
impl Canvas {
/// Creates a canvas filled with spaces in style st.
pub fn new(w: i32, h: i32, st: Style) -> Canvas {
let (w, h) = (w.max(0), h.max(0));
Canvas { w, h, c: vec![Cell::space(st); (w * h) as usize], big: Vec::new() }
}
fn inside(&self, x: i32, y: i32) -> bool {
x >= 0 && y >= 0 && x < self.w && y < self.h
}
fn cell_str<'a>(&'a self, c: &'a Cell) -> &'a str {
if c.n == HEAP {
let i = u32::from_le_bytes([c.g[0], c.g[1], c.g[2], c.g[3]]) as usize;
return &self.big[i];
}
// Only whole UTF-8 clusters are ever stored.
std::str::from_utf8(&c.g[..c.n as usize]).unwrap_or("?")
}
fn make(&mut self, s: &str, w: i32, st: Style) -> Cell {
let mut g = [0; INLINE];
let n = if s.len() <= INLINE {
g[..s.len()].copy_from_slice(s.as_bytes());
s.len() as u8
} else {
g[..4].copy_from_slice(&(self.big.len() as u32).to_le_bytes());
self.big.push(s.to_string());
HEAP
};
Cell { g, n, w: w as u8, st }
}
/// Writes one cluster of width w at (x, y), repairing any wide cluster
/// it overlaps so the grid never holds half a character.
fn put(&mut self, x: i32, y: i32, s: &str, w: i32, st: Style) {
if !self.inside(x, y) || x + w > self.w {
return;
}
let row = (y * self.w) as usize;
let (xu, wu, cw) = (x as usize, w as usize, self.w as usize);
for i in xu..xu + wu {
if self.c[row + i].is_cont() && i > 0 && i == xu {
// overwriting the tail of a wide cluster
self.c[row + i - 1].set_space();
}
let c = self.c[row + i];
if !c.is_cont() && c.w > 1 && i + 1 < cw && self.c[row + i + 1].is_cont() {
// overwriting its head
self.c[row + i + 1].set_space();
}
}
self.c[row + xu] = self.make(s, w, st);
for i in 1..wu {
self.c[row + xu + i] = Cell { g: [0; INLINE], n: 0, w: 0, st };
}
}
/// Draws s at (x, y), clipped to max_w cells and the canvas. Control
/// characters are replaced as a second line of defence (callers sanitise
/// untrusted strings first). It returns the number of cells used.
pub fn text(&mut self, x: i32, y: i32, s: &str, max_w: i32, st: Style) -> i32 {
if y < 0 || y >= self.h {
return 0;
}
let limit = (x + max_w).min(self.w);
let mut cx = x;
textutil::clusters(s, |c, w| {
let (mut c, mut w) = (c, w as i32);
let b = c.as_bytes();
if b[0] < 0x20 || b[0] == 0x7f || (b.len() > 1 && b[0] == 0xc2 && b[1] < 0xa0) {
(c, w) = ("?", 1);
}
if cx + w > limit {
// A wide cluster that does not fit leaves a blank cell.
while cx < limit {
if cx >= 0 {
self.put(cx, y, " ", 1, st);
}
cx += 1;
}
return false;
}
if cx >= 0 {
self.put(cx, y, c, w, st);
}
cx += w;
true
});
cx - x
}
/// Draws s centred within [x, x+w).
pub fn text_centered(&mut self, x: i32, y: i32, w: i32, s: &str, st: Style) {
let s = textutil::truncate(s, w.max(0) as usize);
self.text(x + (w - textutil::width(&s) as i32) / 2, y, &s, w, st);
}
/// Draws s right-aligned ending at x+w.
pub fn text_right(&mut self, x: i32, y: i32, w: i32, s: &str, st: Style) {
let s = textutil::truncate(s, w.max(0) as usize);
self.text(x + w - textutil::width(&s) as i32, y, &s, w, st);
}
/// Fills r with the single-cell cluster ch.
pub fn fill(&mut self, r: Rect, ch: &str, st: Style) {
for y in r.y.max(0)..(r.y + r.h).min(self.h) {
for x in r.x.max(0)..(r.x + r.w).min(self.w) {
self.put(x, y, ch, 1, st);
}
}
}
/// Applies f to the style of every cell in r.
pub fn restyle(&mut self, r: Rect, f: impl Fn(Style) -> Style) {
for y in r.y.max(0)..(r.y + r.h).min(self.h) {
for x in r.x.max(0)..(r.x + r.w).min(self.w) {
let c = &mut self.c[(y * self.w + x) as usize];
c.st = f(c.st);
}
}
}
/// Draws a border around r (which must be at least 2×2).
pub fn draw_box(&mut self, r: Rect, b: BoxChars, st: Style) {
if r.w < 2 || r.h < 2 {
return;
}
let (x1, y1) = (r.x + r.w - 1, r.y + r.h - 1);
for x in r.x + 1..x1 {
self.put(x, r.y, b.h, 1, st);
self.put(x, y1, b.h, 1, st);
}
for y in r.y + 1..y1 {
self.put(r.x, y, b.v, 1, st);
self.put(x1, y, b.v, 1, st);
}
self.put(r.x, r.y, b.tl, 1, st);
self.put(x1, r.y, b.tr, 1, st);
self.put(r.x, y1, b.bl, 1, st);
self.put(x1, y1, b.br, 1, st);
}
/// Draws a horizontal rule.
pub fn hline(&mut self, x: i32, y: i32, w: i32, ch: &str, st: Style) {
for i in x..x + w {
self.put(i, y, ch, 1, st);
}
}
/// Serialises the canvas as lines of text with SGR styling. For 256 and
/// 16 colours it quantizes with its own perceptual mapping (see
/// color256.rs); Depth::None keeps attributes only.
pub fn render(&self, depth: Depth) -> String {
let mut b = String::with_capacity((self.w * self.h * 4) as usize);
for y in 0..self.h {
if y > 0 {
b.push('\n');
}
let mut cur = Style::default();
let mut first = true;
for x in 0..self.w {
let c = &self.c[(y * self.w + x) as usize];
if c.is_cont() {
continue;
}
if first || c.st != cur {
sgr(&mut b, c.st, depth);
cur = c.st;
first = false;
}
b.push_str(self.cell_str(c));
}
b.push_str("\x1b[0m");
}
b
}
}
fn sgr(b: &mut String, st: Style, depth: Depth) {
b.push_str("\x1b[0");
for (bit, code) in [(BOLD, ";1"), (FAINT, ";2"), (ITALIC, ";3"), (UNDERLINE, ";4"), (REVERSE, ";7")] {
if st.attr & bit != 0 {
b.push_str(code);
}
}
let col = |b: &mut String, c: Color, bg: bool| {
if c.is_default() {
return;
}
let _ = match depth {
Depth::None => Ok(()),
Depth::C256 => write!(b, ";{};5;{}", if bg { 48 } else { 38 }, quant256(c)),
Depth::C16 => {
let n = quant16(c) as u32;
let mut code = if n >= 8 { 90 + n - 8 } else { 30 + n };
if bg {
code += 10;
}
write!(b, ";{code}")
}
Depth::True => write!(b, ";{};2;{};{};{}", if bg { 48 } else { 38 }, c.r(), c.g(), c.b()),
};
};
col(b, st.fg, false);
col(b, st.bg, true);
b.push('m');
}
rust/src/tui/color256.rs
+92
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//! The stock 256-colour conversion maps dark, slightly tinted colours to
//! saturated cube entries (olive, navy), which wrecks the subtle shading the
//! treemap relies on. quant256 picks the perceptually nearest entry (redmean
//! distance) among the cube and the grey ramp, never the palette-dependent
//! first 16 entries.
use super::canvas::Color;
use std::cell::RefCell;
use std::collections::HashMap;
const CUBE_LEVELS: [i32; 6] = [0, 95, 135, 175, 215, 255];
thread_local! {
static Q256: RefCell<HashMap<u32, u8>> = RefCell::new(HashMap::new());
static Q16: RefCell<HashMap<u32, u8>> = RefCell::new(HashMap::new());
}
fn redmean(r1: i32, g1: i32, b1: i32, r2: i32, g2: i32, b2: i32) -> i32 {
let rm = (r1 + r2) / 2;
let (dr, dg, db) = (r1 - r2, g1 - g2, b1 - b2);
(((512 + rm) * dr * dr) >> 8) + 4 * dg * dg + (((767 - rm) * db * db) >> 8)
}
pub(crate) fn quant256(c: Color) -> u8 {
if let Some(v) = Q256.with(|q| q.borrow().get(&c.0).copied()) {
return v;
}
let (r, g, b) = (c.r() as i32, c.g() as i32, c.b() as i32);
let (mut best, mut best_d) = (16, i32::MAX);
for i in 0..216 {
let (cr, cg, cb) = (CUBE_LEVELS[i / 36], CUBE_LEVELS[i / 6 % 6], CUBE_LEVELS[i % 6]);
let d = redmean(r, g, b, cr, cg, cb);
if d < best_d {
(best, best_d) = (16 + i, d);
}
}
for i in 0..24 {
let v = 8 + 10 * i as i32;
let d = redmean(r, g, b, v, v, v);
if d < best_d {
(best, best_d) = (232 + i, d);
}
}
Q256.with(|q| q.borrow_mut().insert(c.0, best as u8));
best as u8
}
/// Maps a colour to a basic colour. Dark shades become black and
/// unsaturated colours grey/white, so tints and shadows stay quiet;
/// saturated colours keep their hue (bright variant when light), so category
/// colours survive. The stock conversion instead turns dark tints into
/// bright yellow/cyan.
pub(crate) fn quant16(c: Color) -> u8 {
if let Some(v) = Q16.with(|q| q.borrow().get(&c.0).copied()) {
return v;
}
let (rf, gf, bf) = c.comps();
let (mx, mn) = (rf.max(gf).max(bf), rf.min(gf).min(bf));
let luma = c.luma();
let n = if luma < 0.2 {
0
} else if mx - mn < 0.12 {
// grey
if luma < 0.45 {
8
} else if luma < 0.8 {
7
} else {
15
}
} else {
// Hue in sixths: red, yellow, green, cyan, blue, magenta.
let mut h = if mx == rf {
((gf - bf) / (mx - mn)) % 6.0
} else if mx == gf {
(bf - rf) / (mx - mn) + 2.0
} else {
(rf - gf) / (mx - mn) + 4.0
};
if h < 0.0 {
h += 6.0
}
let ansi = [1u8, 3, 2, 6, 4, 5][h.round() as usize % 6];
if luma > 0.5 {
ansi + 8
} else {
ansi
}
};
Q16.with(|q| q.borrow_mut().insert(c.0, n));
n
}
rust/src/tui/data.rs
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//! Size lookups, the cached sorted child lists, selection upkeep and
//! colouring.
use super::canvas::Color;
use super::model::{group_id, group_parent, is_group, Model, NO_SEL};
use crate::inventory::{NodeId, Tree, FLAG_DELETED, NO_NODE};
use crate::snapshot::Status;
use std::collections::HashSet;
use std::rc::Rc;
/// A cached, size-sorted child list (zero-size entries removed).
#[derive(Default)]
pub(crate) struct Kids {
pub ids: Vec<NodeId>,
pub sizes: Vec<i64>,
pub total: i64,
}
impl Model {
/// The size that drives layout: the filtered size when a filter is
/// active, otherwise the aggregate in the current size mode.
pub fn size_of(&self, tr: &Tree, id: NodeId) -> i64 {
if let Some(r) = &self.search.result {
return r.size(id);
}
let n = tr.node(id);
if n.has(FLAG_DELETED) {
return 0;
}
n.total(self.size_mode)
}
/// The sorted children of id, cached until data changes.
pub fn kids_of(&mut self, tr: &Tree, id: NodeId) -> Rc<Kids> {
if self.kids_ver != self.data_ver {
self.kids_cache.clear();
self.kids_ver = self.data_ver;
}
if let Some(k) = self.kids_cache.get(&id) {
return k.clone();
}
let mut v: Vec<(i64, NodeId)> =
tr.children(id).map(|(c, _)| (self.size_of(tr, c), c)).filter(|&(s, _)| s > 0).collect();
v.sort_unstable_by(|a, b| b.0.cmp(&a.0).then(a.1.cmp(&b.1)));
let k = Rc::new(Kids {
total: v.iter().map(|e| e.0).sum(),
sizes: v.iter().map(|e| e.0).collect(),
ids: v.iter().map(|e| e.1).collect(),
});
self.kids_cache.insert(id, k.clone());
k
}
/// The selected inventory node (NO_NODE for groups).
pub fn selected_node(&self, tr: &Tree) -> NodeId {
if self.sel == NO_SEL || is_group(self.sel) || self.sel >= tr.len() as i64 {
return NO_NODE;
}
self.sel as NodeId
}
/// Keeps the selection meaningful after any change: if the selected node
/// is no longer a direct, visible child of the zoom root it falls back to
/// the visible ancestor, then the group containing it, then the largest
/// child.
pub fn ensure_selection(&mut self, tr: &Tree) {
let k = self.kids_of(tr, self.zoom);
if k.ids.is_empty() {
self.sel = NO_SEL;
return;
}
if !self.user_sel {
// Until the user picks something, follow the largest block (it
// changes while a scan is running).
self.sel = k.ids[0] as i64;
return;
}
if is_group(self.sel) {
if group_parent(self.sel) == self.zoom {
return;
}
self.sel = NO_SEL;
}
let id = self.selected_node(tr);
if id != NO_NODE {
// Walk up to the direct child of the zoom root.
let mut cur = id;
while cur != NO_NODE {
if tr.node(cur).parent == self.zoom {
if self.size_of(tr, cur) > 0 {
self.sel = cur as i64;
return;
}
break;
}
cur = tr.node(cur).parent;
}
}
self.sel = k.ids[0] as i64;
}
/// Maps the selection onto the treemap blocks: a node collapsed into the
/// LOD group selects the group.
pub fn visible_sel(&self, blocks: &HashSet<i64>) -> i64 {
if blocks.contains(&self.sel) {
return self.sel;
}
if !is_group(self.sel) && blocks.contains(&group_id(self.zoom)) {
return group_id(self.zoom);
}
self.sel
}
/// Makes dir the treemap root.
pub fn zoom_to(&mut self, tr: &Tree, dir: NodeId) {
if dir == self.zoom {
return;
}
let prev = self.zoom;
self.zoom = dir;
// Coming back out, keep the directory we left selected.
self.sel = if tr.is_ancestor(dir, prev) { prev as i64 } else { NO_SEL };
self.user_sel = self.sel != NO_SEL;
self.zoomed = true;
self.dirty = true;
}
pub fn set_view(&mut self, i: usize) {
if i < self.views.len() {
self.view = i;
self.dirty = true;
}
}
/// The base colour for a block.
pub fn color_of(&self, tr: &Tree, id: i64) -> Color {
let t = &self.theme;
if is_group(id) {
return t.group;
}
let nid = id as NodeId;
let n = tr.node(nid);
if let Some(d) = &self.opts.diff {
let total = n.total(self.size_mode);
return match d.status_of(tr, nid, self.size_mode) {
Status::Added => t.diff_new,
Status::Grew => {
let old = d.old_size(nid, self.size_mode).unwrap_or(0);
t.diff_same.mix(t.diff_grow, ratio(total - old, old))
}
Status::Shrank => {
let old = d.old_size(nid, self.size_mode).unwrap_or(0);
t.diff_same.mix(t.diff_shrink, ratio(old - total, old))
}
_ => t.diff_same,
};
}
if !n.is_dir() {
if let Some(c) = t.ext.as_ref().and_then(|e| e.get(tr.ext_name(n))) {
return *c;
}
return t.cat[n.cat as usize];
}
let (mut best, mut best_v) = (None, 0);
for (i, &v) in tr.cat_sizes(nid).into_iter().flatten().enumerate() {
if v > best_v {
(best, best_v) = (Some(i), v);
}
}
best.map_or(t.empty_dir, |b| t.cat[b])
}
}
/// Maps a relative change to 0.35..1 for colour intensity.
fn ratio(delta: i64, base: i64) -> f64 {
if base <= 0 {
return 1.0;
}
let r = delta as f64 / base as f64;
(0.35 + r * 0.65).min(1.0)
}
rust/src/tui/infoview.rs
+160
View File
@@ -0,0 +1,160 @@
//! The scan information view: statistics and the error list.
use super::canvas::{Canvas, Style, BOLD};
use super::model::{Cmd, Model};
use super::table::{col, Table, TableRow};
use super::san;
use crate::inventory::{ErrKind, Tree, FLAG_ALLOC_UNKNOWN};
use crate::textutil;
use crate::treemap::Rect;
#[derive(Default)]
pub(crate) struct InfoView {
pub tb: Table,
}
impl InfoView {
pub fn focus_errors(&mut self) {
self.tb.cursor = 0;
}
pub fn paint(&mut self, m: &mut Model, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = m.theme.clone();
cv.fill(r, " ", t.base());
let st = &tr.stats;
let root = tr.node(0);
let lw = if r.w < 100 { r.w - 2 } else { 52.min(r.w / 2) };
let mut y = r.y + 1;
let x = r.x + 2;
let label = Style::new(t.muted, t.bg);
let value = Style::new(t.fg, t.bg).with(BOLD);
let line = |cv: &mut Canvas, y: &mut i32, k: &str, val: &str, vs: Style| {
if *y >= r.y + r.h {
return;
}
cv.text(x, *y, k, 20, label);
cv.text(x + 20, *y, val, lw - 20, vs);
*y += 1;
};
let head = |cv: &mut Canvas, y: &mut i32, s: &str| {
if *y >= r.y + r.h - 1 {
return;
}
*y += 1;
cv.text(x, *y, s, lw, Style::new(t.accent, t.bg).with(BOLD));
*y += 1;
};
let (state, mut state_st) = ("Complete", Style::new(t.ok, t.bg).with(BOLD));
let state = if m.scanning {
state_st.fg = t.accent;
"Scanning…"
} else if st.cancelled {
state_st.fg = t.warn;
"Cancelled — totals incomplete"
} else if st.incomplete() {
state_st.fg = t.warn;
"Complete, with unreadable areas"
} else {
state
};
cv.text(x, y, "SCAN INFORMATION", lw, Style::new(t.accent, t.bg).with(BOLD));
y += 1;
line(cv, &mut y, "Root", &san(&st.root), value);
line(cv, &mut y, "State", state, state_st);
if !st.from_snapshot.is_empty() {
line(cv, &mut y, "Snapshot", &textutil::sanitize(&st.from_snapshot), value);
}
let files = st.files + st.symlinks + st.others;
line(cv, &mut y, "Items scanned", &textutil::count(files + st.dirs), value);
line(cv, &mut y, " Files", &textutil::count(st.files), value);
line(cv, &mut y, " Directories", &textutil::count(st.dirs), value);
line(cv, &mut y, " Symlinks", &textutil::count(st.symlinks), value);
line(cv, &mut y, " Special", &textutil::count(st.others), value);
line(cv, &mut y, "Logical size", &format!("{} ({} bytes)", textutil::size(root.tot_size), textutil::count(root.tot_size)), value);
line(cv, &mut y, "Allocated size", &format!("{} ({} bytes)", textutil::size(root.tot_alloc), textutil::count(root.tot_alloc)), value);
let el = st.elapsed();
if st.from_snapshot.is_empty() {
line(cv, &mut y, "Elapsed", &textutil::duration(el), value);
let rate = (files + st.dirs) as f64 / el.as_secs_f64().max(0.001);
line(cv, &mut y, "Rate", &(textutil::count(rate as i64) + " items/s"), value);
let cpus = std::thread::available_parallelism().map_or(1, |n| n.get());
line(cv, &mut y, "Workers", &format!("{} ({} CPUs)", st.workers, cpus), value);
}
head(cv, &mut y, "ERRORS AND OMISSIONS");
let mut any_issue = false;
for (k, &c) in st.err_counts.iter().enumerate() {
if c > 0 {
line(cv, &mut y, ErrKind::from_u8(k as u8).name(), &textutil::count(c), Style::new(t.err, t.bg).with(BOLD));
any_issue = true;
}
}
for (k, v) in [("Unscanned dirs", st.unscanned), ("Excluded", st.excluded), ("Other FS skipped", st.skipped_mounts),
("Virtual FS skipped", st.virtual_skipped), ("Loops skipped", st.loops_skipped), ("Broken symlinks", st.broken_links),
("Hard-link dups", st.hardlink_dups)]
{
if v > 0 {
line(cv, &mut y, k, &textutil::count(v), Style::new(t.warn, t.bg).with(BOLD));
any_issue = true;
}
}
if !any_issue {
line(cv, &mut y, "None", "every entry was read", Style::new(t.ok, t.bg));
}
head(cv, &mut y, "OPTIONS");
let excl = if st.excludes.is_empty() { "none".to_string() } else { textutil::sanitize(&st.excludes.join(", ")) };
line(cv, &mut y, "Exclusions", &excl, value);
line(cv, &mut y, "One filesystem", &st.one_file_system.to_string(), value);
line(cv, &mut y, "Follow symlinks", &textutil::sanitize(&st.follow), value);
line(cv, &mut y, "Size mode", m.size_mode.name(), value);
line(cv, &mut y, "Units", if crate::textutil::si() { "SI (1000)" } else { "IEC (1024)" }, value);
if root.has(FLAG_ALLOC_UNKNOWN) {
line(cv, &mut y, "Note", "allocated size unavailable on this platform", Style::new(t.warn, t.bg));
}
// Error list on the right (or below in narrow terminals).
let er = if r.w < 100 {
Rect { x: r.x, y: y + 1, w: r.w, h: r.y + r.h - y - 1 }
} else {
Rect { x: r.x + lw + 4, y: r.y, w: r.w - lw - 4, h: r.h }
};
if er.w < 30 || er.h < 4 {
return;
}
let rows: Vec<TableRow> = st
.errors
.iter()
.map(|e| {
let mut p = tr.path_bytes(e.node);
if !e.name.is_empty() {
p.push(b'/');
p.extend_from_slice(&e.name);
}
TableRow {
cells: vec![e.kind.name().into(), san(&p), textutil::sanitize(&e.msg)],
styles: vec![Some(Style::new(t.err, t.bg)), None, Some(Style::new(t.muted, t.bg))],
bar: -1.0,
..Default::default()
}
})
.collect();
let mut title = format!("ERROR LIST ({})", textutil::count(st.total_errors()));
if (st.errors.len() as i64) < st.total_errors() {
title += &format!(" — first {} shown", textutil::count(st.errors.len() as i64));
}
let cols = [col("KIND", 18, false, false), col("PATH", 0, false, true), col("DETAIL", 22, false, false)];
self.tb.paint(m, cv, er, &cols, &rows, &title);
}
pub fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd) {
let errs = &tr.stats.errors;
if self.tb.key(k, errs.len()) {
return (true, Cmd::None);
}
if self.tb.at() < errs.len() && (k == "enter" || k == "space") {
m.jump_to(tr, errs[self.tb.at()].node);
return (true, Cmd::None);
}
(false, Cmd::None)
}
}
rust/src/tui/keys.rs
+228
View File
@@ -0,0 +1,228 @@
//! Key dispatch and the actions keys trigger.
use super::model::{is_group, Cmd, Key, Model, Msg};
use super::modals::{new_group_modal, new_help_modal, new_info_modal, new_save_modal};
use super::theme::{load_theme, theme_names};
use super::views::View;
use super::{fmt_stamp_now, san};
use crate::brand;
use crate::inventory::{NodeId, SizeMode, Tree, NO_NODE};
use crate::platform;
use crate::snapshot;
use crate::textutil;
use std::ffi::OsStr;
use std::os::unix::ffi::OsStrExt;
use std::path::Path;
use std::rc::Rc;
impl Model {
/// Dispatches a key press. It holds the tree read lock for the whole
/// handler; helpers it calls must not lock again (a recursive read lock
/// can deadlock against a waiting writer).
pub fn handle_key(&mut self, key: &Key) -> Cmd {
let k = key.name.as_str();
if k == "ctrl+c" {
return self.ctrl_c_pressed();
}
let arc = self.tree.clone();
let tr = arc.read().unwrap();
self.ensure_selection(&tr);
if !self.modals.is_empty() {
return self.modal_key(&tr, key);
}
if self.search.editing {
return self.search_key(key);
}
let (handled, cmd) = self.view_key(&tr, k);
if handled {
return cmd;
}
match k {
"q" => self.quit = true,
"?" | "f1" => {
let md = new_help_modal();
self.open_modal(md);
}
"/" => self.search.begin(),
"esc" => {
if self.search.query.is_some() {
self.clear_filter();
} else if self.zoom != 0 {
self.zoom_out(&tr);
}
}
"tab" => self.set_view((self.view + 1) % self.views.len()),
"shift+tab" => self.set_view((self.view + self.views.len() - 1) % self.views.len()),
"1" | "2" | "3" | "4" | "5" | "6" | "7" => self.set_view((k.as_bytes()[0] - b'1') as usize),
"enter" => return self.inspect_selection(&tr),
"space" | "right" => return self.zoom_into_selection(&tr),
"backspace" | "left" => self.zoom_out(&tr),
"home" => self.zoom_to(&tr, 0),
"a" => {
self.size_mode = if self.size_mode == SizeMode::Allocated { SizeMode::Logical } else { SizeMode::Allocated };
self.invalidate();
let mut cmds = Vec::new();
if self.search.query.is_some() {
cmds.push(self.apply_filter());
}
let msg = format!("Sizing by {} size", self.size_mode.name());
cmds.push(self.info(msg));
return Cmd::batch(cmds);
}
"r" => return self.rescan(&tr),
"s" => {
let md = new_save_modal(&tr);
self.open_modal(md);
}
"e" => {
self.set_view_by_name("Scan");
if let View::Info(v) = &mut self.views[self.view] {
v.focus_errors();
}
}
"x" => self.set_view_by_name("Types"),
"g" => self.set_view_by_name("Top"),
"D" => return self.start_duplicates(),
"c" => return self.copy_selected(&tr),
"o" => return self.reveal(&tr),
"d" | "delete" => return self.request_trash(&tr),
"T" => {
let names = theme_names();
let cur = names.iter().position(|n| *n == self.theme.name).unwrap_or(0);
let ascii = self.theme.ascii;
let mut th = load_theme(names[(cur + 1) % names.len()], &self.opts.settings);
th.ascii = ascii;
self.theme = Rc::new(th);
let msg = format!("Theme: {}", self.theme.name);
return self.info(msg);
}
_ => {}
}
Cmd::None
}
pub fn inspect_selection(&mut self, tr: &Tree) -> Cmd {
if is_group(self.sel) {
if let Some(g) = self.group_info(self.sel) {
self.open_modal(new_group_modal(g));
}
return Cmd::None;
}
let id = self.selected_node(tr);
if id != NO_NODE {
let md = new_info_modal(self, tr, id);
self.open_modal(md);
}
Cmd::None
}
pub fn zoom_into_selection(&mut self, tr: &Tree) -> Cmd {
if is_group(self.sel) {
// Groups cannot be zoomed: show their members in the list view.
if let Some(g) = self.group_info(self.sel) {
if let Some(&first) = g.ids().first() {
self.sel = first as i64;
self.set_view_by_name("List");
}
}
return Cmd::None;
}
let id = self.selected_node(tr);
if id == NO_NODE {
return Cmd::None;
}
if !tr.node(id).is_dir() {
return self.info("Not a directory — Enter shows details");
}
if self.kids_of(tr, id).ids.is_empty() {
return self.info("Directory is empty");
}
self.zoom_to(tr, id);
Cmd::None
}
pub fn zoom_out(&mut self, tr: &Tree) {
let p = tr.node(self.zoom).parent;
if p != NO_NODE {
self.zoom_to(tr, p);
}
}
/// Zooms to a node's parent directory and selects it.
pub fn jump_to(&mut self, tr: &Tree, id: NodeId) {
let p = tr.node(id).parent;
if p == NO_NODE {
self.zoom_to(tr, id);
return;
}
self.zoom_to(tr, p);
self.sel = id as i64;
self.set_view_by_name("Map");
}
fn copy_selected(&mut self, tr: &Tree) -> Cmd {
let id = self.selected_node(tr);
if id == NO_NODE {
return Cmd::None;
}
self.copy_path(&tr.path_bytes(id))
}
/// Puts p on the clipboard (OSC 52). Paths that would not survive
/// display unchanged are refused: a newline in a hostile filename runs
/// commands when pasted into a shell, and bidi controls disguise them.
pub fn copy_path(&mut self, p: &[u8]) -> Cmd {
let s = san(p);
if s.as_bytes() != p {
return self.warn("Not copied: path contains control or bidi characters");
}
let i = self.info("Copied path to clipboard (OSC 52)");
Cmd::batch(vec![Cmd::Clipboard(s), i])
}
pub fn reveal(&mut self, tr: &Tree) -> Cmd {
if self.snapshot {
return self.warn("Snapshot — the files may not exist on this machine");
}
let id = self.selected_node(tr);
if id == NO_NODE {
return Cmd::None;
}
if platform::headless() {
// No file manager: show the folder in the map instead.
if tr.node(id).is_dir() && !self.kids_of(tr, id).ids.is_empty() {
self.zoom_to(tr, id);
self.set_view_by_name("Map");
} else {
self.jump_to(tr, id);
}
let msg = format!("Showing {}", san(&tr.path_bytes(self.zoom)));
return self.info(msg);
}
if let Err(e) = platform::reveal(&tr.path(id)) {
return self.warn(format!("Open failed: {}", textutil::sanitize(&e.to_string())));
}
self.info("Opened in file manager")
}
pub fn save_snapshot(&mut self, path: String) -> Cmd {
let t = self.tree.clone();
Cmd::run(move || {
let err = {
let g = t.read().unwrap();
snapshot::save_file(Path::new(&path), &g).err().map(|e| e.to_string())
};
Msg::SaveDone { path, err }
})
}
}
pub(crate) fn default_snapshot_name(root: &[u8]) -> String {
let p = Path::new(OsStr::from_bytes(root));
let base = match p.file_name() {
Some(b) => String::from_utf8_lossy(b.as_bytes()).into_owned(),
None => "root".into(),
};
let wd = std::env::current_dir().unwrap_or_default();
wd.join(format!("{base}-{}{}", fmt_stamp_now(), brand::SNAPSHOT_EXT)).to_string_lossy().into_owned()
}
rust/src/tui/mapview.rs
+383
View File
@@ -0,0 +1,383 @@
//! The treemap view: layout with level-of-detail grouping, nested previews
//! inside directories, painting and spatial navigation.
use super::canvas::{rgb, Canvas, Style, BOLD, BOX_ROUND, FAINT};
use super::data::Kids;
use super::model::{group_id, is_group, Cmd, Hit, HitAct, Model};
use super::render::kind_label;
use super::{san, trunc, tw};
use crate::inventory::{NodeId, Tree, NO_NODE};
use crate::textutil;
use crate::treemap::{self, Block, Direction, Item, Rect};
use std::collections::{HashMap, HashSet};
use std::rc::Rc;
/// The treemap geometry for one (zoom, rect, data version). It is recomputed
/// from scratch whenever any of those change — after a resize the layout
/// algorithm runs again for the new rectangle rather than scaling the old
/// one.
pub(crate) struct TmLayout {
pub zoom: NodeId,
pub rect: Rect,
pub ver: u64,
pub blocks: Vec<Block>, // top level: navigable
pub nested: Vec<Nested>, // previews inside directories: drawn only
pub groups: HashMap<i64, Group>,
pub visible: HashSet<i64>,
pub inner: HashSet<i64>, // top-level blocks with nested previews
}
#[derive(Clone, Copy)]
pub(crate) struct Nested {
pub id: i64,
pub r: Rect,
pub depth: i32,
pub alt: bool,
pub inner: bool, // has nested children drawn inside it
}
/// An LOD group: the children of parent from index `from` on.
#[derive(Clone)]
pub(crate) struct Group {
pub parent: NodeId,
kids: Rc<Kids>,
from: usize,
pub size: i64,
}
impl Group {
pub fn ids(&self) -> &[NodeId] {
&self.kids.ids[self.from..]
}
}
// LOD parameters.
pub(crate) const TOP_MIN_AREA: i32 = 12; // cells: room for a 4×3 framed block
const TOP_MAX_ITEMS: usize = 400;
const NEST_MIN_AREA: i32 = 3;
const NEST_MAX_ITEMS: usize = 120;
const MAX_NEST_DEPTH: i32 = 8; // block-size thresholds stop recursion long before this
const NEST_MIN_W: i32 = 4;
const NEST_MIN_H: i32 = 2;
const NEST_RECURSE_W: i32 = 14;
const NEST_RECURSE_H: i32 = 5;
impl Model {
pub fn layout_treemap(&mut self, tr: &Tree, r: Rect) -> Rc<TmLayout> {
if let Some(l) = &self.tm {
if l.zoom == self.zoom && l.rect == r && l.ver == self.data_ver {
return l.clone();
}
}
let mut l = TmLayout {
zoom: self.zoom, rect: r, ver: self.data_ver, blocks: Vec::new(), nested: Vec::new(),
groups: HashMap::new(), visible: HashSet::new(), inner: HashSet::new(),
};
l.blocks = self.layout_level(tr, &mut l, self.zoom, r, TOP_MIN_AREA, TOP_MAX_ITEMS);
for i in 0..l.blocks.len() {
let b = l.blocks[i];
l.visible.insert(b.id);
if b.id < 0 || b.rect.w < 3 || b.rect.h < 2 {
continue;
}
if tr.node(b.id as NodeId).is_dir() {
let inn = b.rect.inset(1);
if inn.w >= NEST_MIN_W && inn.h >= NEST_MIN_H {
let before = l.nested.len();
let end = self.chain_end(tr, b.id as NodeId);
self.layout_nested(tr, &mut l, end, inn, 2);
if l.nested.len() > before {
l.inner.insert(b.id);
}
}
}
}
let l = Rc::new(l);
self.tm = Some(l.clone());
l
}
/// Lays out the children of parent in r with level-of-detail grouping:
/// children too small to be useful collapse into one group block.
fn layout_level(&mut self, tr: &Tree, l: &mut TmLayout, parent: NodeId, r: Rect, min_area: i32, max_items: usize) -> Vec<Block> {
let k = self.kids_of(tr, parent);
if k.ids.is_empty() || r.empty() {
return Vec::new();
}
let sizes: Vec<f64> = k.sizes.iter().map(|&s| s as f64).collect();
let vis = treemap::visible(&sizes, k.total as f64, r.area(), min_area, max_items);
let mut items: Vec<Item> = (0..vis).map(|i| Item { id: k.ids[i] as i64, size: sizes[i] }).collect();
if vis < k.ids.len() {
let size = k.sizes[vis..].iter().sum();
let gid = group_id(parent);
l.groups.insert(gid, Group { parent, kids: k.clone(), from: vis, size });
items.push(Item { id: gid, size: size as f64 });
}
treemap::squarify(&items, r)
}
fn layout_nested(&mut self, tr: &Tree, l: &mut TmLayout, parent: NodeId, r: Rect, depth: i32) {
// Deeper levels need bigger blocks to stay legible rather than noisy.
let blocks = self.layout_level(tr, l, parent, r, NEST_MIN_AREA * (depth - 1), NEST_MAX_ITEMS);
for (i, b) in blocks.iter().enumerate() {
let idx = l.nested.len();
l.nested.push(Nested { id: b.id, r: b.rect, depth, alt: i % 2 == 1, inner: false });
let br = b.rect;
if depth < MAX_NEST_DEPTH && b.id >= 0 && br.w >= NEST_RECURSE_W && br.h >= NEST_RECURSE_H && tr.node(b.id as NodeId).is_dir() {
l.nested[idx].inner = true;
let end = self.chain_end(tr, b.id as NodeId);
self.layout_nested(tr, l, end, Rect { x: br.x, y: br.y + 1, w: br.w - 1, h: br.h - 2 }, depth + 1);
}
}
}
/// Follows directories whose only non-empty child is a directory
/// (mnt → raid → media), so nesting spends its space on the level that
/// actually branches instead of on full-size wrappers.
pub fn chain_end(&mut self, tr: &Tree, mut id: NodeId) -> NodeId {
loop {
let k = self.kids_of(tr, id);
if k.ids.len() != 1 || !tr.node(k.ids[0]).is_dir() {
return id;
}
id = k.ids[0];
}
}
/// The LOD group for a group ID in the current layout.
pub fn group_info(&self, id: i64) -> Option<Group> {
self.tm.as_ref()?.groups.get(&id).cloned()
}
/// A sanitised display name for a block.
pub fn block_name(&mut self, tr: &Tree, id: i64) -> String {
if is_group(id) {
return match self.group_info(id) {
Some(g) => textutil::count(g.ids().len() as i64) + " smaller items",
None => "smaller items".into(),
};
}
let mut nid = id as NodeId;
let n = tr.node(nid);
let mut name = san(&n.name);
if n.is_dir() && nid != 0 {
name.push('/');
let end = self.chain_end(tr, nid);
while nid != end {
nid = self.kids_of(tr, nid).ids[0];
name += &san(&tr.node(nid).name);
name.push('/');
}
}
name
}
fn block_size(&self, tr: &Tree, id: i64) -> i64 {
if is_group(id) {
return self.group_info(id).map_or(0, |g| g.size);
}
self.size_of(tr, id as NodeId)
}
/// The size of the folder a block sits in.
fn parent_size(&self, tr: &Tree, id: i64) -> i64 {
if is_group(id) {
return self.group_info(id).map_or(0, |g| self.size_of(tr, g.parent));
}
let p = tr.node(id as NodeId).parent;
if p != NO_NODE {
return self.size_of(tr, p);
}
0
}
fn paint_top(&mut self, tr: &Tree, cv: &mut Canvas, b: Block, sel: bool, hov: bool, total: i64) {
let t = self.theme.clone();
let base = self.color_of(tr, b.id);
let fill = base.mix(t.bg, 0.62);
let fill_ch = if !is_group(b.id) {
" "
} else if t.ascii {
"."
} else {
"░"
};
let name = self.block_name(tr, b.id);
let size = self.block_size(tr, b.id);
let r = b.rect;
if r.w < 3 || r.h < 2 {
// Too small for a frame: a solid tile.
let mut st = Style::new(base, base.mix(t.bg, 0.3));
let mut ch = fill_ch;
if sel {
st = Style::new(t.text_on(t.sel), t.sel).with(BOLD | self.mono_rev());
ch = if t.ascii { "#" } else { "◆" };
} else if t.mono {
ch = "▒";
}
cv.fill(r, " ", st);
cv.text(r.x + (r.w - 1) / 2, r.y + (r.h - 1) / 2, ch, 1, st);
return;
}
cv.fill(r, fill_ch, Style::new(base.mix(t.bg, 0.35), fill));
let mut frame = Style::new(base.mix(t.bg, 0.15), fill);
let mut bx = t.box_chars();
let mut title = Style::new(base.mix(rgb(255, 255, 255), 0.35), fill).with(BOLD);
if sel {
bx = t.sel_box();
frame = Style::new(t.sel, fill).with(BOLD);
title = Style::new(t.text_on(t.sel), t.sel).with(BOLD | self.mono_rev());
} else if hov {
frame.fg = base.mix(rgb(255, 255, 255), 0.5);
}
if t.mono && !sel {
title.attr = BOLD;
}
cv.draw_box(r, bx, frame);
cv.text(r.x + 1, r.y, &trunc(&format!(" {name} "), r.w - 2), r.w - 2, title);
let mut label = textutil::size(size);
let pct = textutil::percent(size, total);
if r.w - 2 >= tw(&label) + tw(&pct) + 5 {
label += &format!(" · {pct}");
} else if r.w - 2 < tw(&label) + 2 {
label = textutil::size_compact(size);
}
let label = format!(" {label} ");
if r.h >= 3 && tw(&label) <= r.w - 2 {
cv.text_right(r.x + 1, r.y + r.h - 1, r.w - 2, &label, Style { fg: frame.fg, bg: fill, attr: frame.attr });
}
// Interior labels for blocks without nested previews.
let inn = r.inset(1);
if inn.empty() || self.has_nested(b.id) {
return;
}
let mut lines = Vec::new();
if !is_group(b.id) {
let nd = tr.node(b.id as NodeId);
if !nd.is_dir() {
lines.push(kind_label(nd));
} else if nd.files > 0 {
lines.push(textutil::count(nd.files as i64) + " files");
}
}
if r.h < 4 || inn.w < 6 {
return;
}
let y0 = inn.y + (inn.h - lines.len() as i32) / 2;
for (i, s) in lines.iter().enumerate() {
cv.text_centered(inn.x, y0 + i as i32, inn.w, s, Style::new(base.mix(t.fg, 0.4), fill));
}
}
fn has_nested(&self, id: i64) -> bool {
self.tm.as_ref().is_some_and(|l| l.inner.contains(&id))
}
fn paint_nested(&mut self, tr: &Tree, cv: &mut Canvas, nb: &Nested) {
let t = self.theme.clone();
let base = self.color_of(tr, nb.id);
let mut f = (0.38 - 0.1 * (nb.depth - 2) as f64).max(0.1);
if nb.alt {
f += 0.07;
}
let bg = base.mix(t.bg, f);
let shadow = bg.mix(rgb(0, 0, 0), 0.45);
let mut st = Style::new(t.text_on(bg), bg);
let mut ch = " ";
if is_group(nb.id) {
ch = if t.ascii { "." } else { "░" };
st.fg = bg.mix(t.fg, 0.25);
}
let r = nb.r;
cv.fill(r, ch, st);
if t.mono {
// No colour: draw a light outline so neighbours stay distinguishable.
if r.w >= 2 && r.h >= 2 {
cv.draw_box(r, BOX_ROUND, Style::default().with(FAINT));
}
} else {
if r.w >= 4 {
cv.fill(Rect { x: r.x + r.w - 1, y: r.y, w: 1, h: r.h }, " ", Style::new(Default::default(), shadow));
}
if r.h >= 3 {
cv.fill(Rect { x: r.x, y: r.y + r.h - 1, w: r.w, h: 1 }, " ", Style::new(Default::default(), shadow));
}
}
let lw = if t.mono { r.w - 2 } else { r.w - 1 };
if lw < 5 {
return;
}
let lx = if t.mono { r.x + 1 } else { r.x };
let ly = if t.mono && r.h >= 3 { r.y + 1 } else { r.y };
let name = self.block_name(tr, nb.id);
if tw(&name) > lw && lw < 8 {
return; // a stub like "te…" is noise, not information
}
cv.text(lx, ly, &trunc(&name, lw), lw, Style::new(st.fg, bg).with(BOLD));
if !nb.inner && r.h >= 3 && lw >= 5 {
let size = self.block_size(tr, nb.id);
let mut label = textutil::size_compact(size);
let pct = textutil::percent(size, self.parent_size(tr, nb.id));
if tw(&label) + tw(&pct) + 3 <= lw {
label += &format!(" · {pct}");
}
cv.text(lx, ly + 1, &trunc(&label, lw), lw, Style::new(bg.mix(st.fg, 0.7), bg));
}
}
}
pub(crate) fn map_paint(m: &mut Model, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = m.theme.clone();
let l = m.layout_treemap(tr, r);
if l.blocks.is_empty() {
let z = tr.node(m.zoom);
let msg = if m.search.query.is_some() {
"No matches here — Esc clears the filter".to_string()
} else if m.scanning {
"Scanning…".to_string()
} else if !z.is_dir() {
format!("{} — {}", san(&z.name), textutil::size(m.size_of(tr, m.zoom)))
} else {
"Empty directory".to_string()
};
cv.text_centered(r.x, r.y + r.h / 2, r.w, &msg, t.muted());
return;
}
let sel = m.visible_sel(&l.visible);
let total = m.size_of(tr, m.zoom);
for b in &l.blocks {
let hov = b.id == m.hover;
m.paint_top(tr, cv, *b, b.id == sel, hov, total);
}
for nb in &l.nested {
m.paint_nested(tr, cv, nb);
}
for b in &l.blocks {
m.hits.push(Hit { r: b.rect, act: HitAct::Block(b.id) });
}
}
pub(crate) fn map_key(m: &mut Model, k: &str) -> (bool, Cmd) {
let d = match k {
"left" | "h" => Direction::Left,
"right" | "l" => Direction::Right,
"up" | "k" => Direction::Up,
"down" | "j" => Direction::Down,
_ => return (false, Cmd::None),
};
if let Some(l) = m.tm.clone() {
if let Some(id) = treemap::neighbour(&l.blocks, m.visible_sel(&l.visible), d) {
m.sel = id;
}
}
(true, Cmd::None)
}
pub(crate) fn map_wheel(m: &mut Model, tr: &Tree, up: bool) -> Cmd {
if up {
return m.zoom_into_selection(tr);
}
m.zoom_out(tr);
Cmd::None
}
rust/src/tui/mod.rs
+83
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//! The interactive terminal interface. All drawing goes to a Canvas; the
//! event loop (run.rs) only transports the finished frame to the terminal.
mod actions;
pub mod bench;
mod canvas;
mod color256;
mod data;
mod infoview;
mod keys;
mod mapview;
mod modal;
mod modals;
mod model;
mod mouse;
mod render;
mod run;
mod search;
mod side;
mod table;
mod theme;
mod views;
#[cfg(test)]
mod tests;
pub use model::{Options, StartFn};
pub use run::run;
use crate::textutil;
// Width-aware text helpers taking the canvas's signed cell counts.
pub(crate) fn tw(s: &str) -> i32 {
textutil::width(s) as i32
}
pub(crate) fn trunc(s: &str, w: i32) -> String {
textutil::truncate(s, w.max(0) as usize)
}
pub(crate) fn trunc_left(s: &str, w: i32) -> String {
textutil::truncate_left(s, w.max(0) as usize)
}
pub(crate) fn pad_left(s: &str, w: i32) -> String {
textutil::pad_left(s, w.max(0) as usize)
}
pub(crate) fn pad_right(s: &str, w: i32) -> String {
textutil::pad_right(s, w.max(0) as usize)
}
pub(crate) fn san(b: &[u8]) -> String {
textutil::sanitize_bytes(b)
}
fn local_tm(unix_nanos: i64) -> libc::tm {
let secs = unix_nanos.div_euclid(1_000_000_000) as libc::time_t;
let mut tm: libc::tm = unsafe { std::mem::zeroed() };
unsafe { libc::localtime_r(&secs, &mut tm) };
tm
}
/// Formats a timestamp as a local date ("2006-01-02").
pub(crate) fn fmt_date(unix_nanos: i64) -> String {
let t = local_tm(unix_nanos);
format!("{:04}-{:02}-{:02}", t.tm_year + 1900, t.tm_mon + 1, t.tm_mday)
}
/// Formats a timestamp as local date and time ("2006-01-02 15:04:05").
pub(crate) fn fmt_time(unix_nanos: i64) -> String {
let t = local_tm(unix_nanos);
format!("{:04}-{:02}-{:02} {:02}:{:02}:{:02}", t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec)
}
/// The current local time as "20060102-1504".
pub(crate) fn fmt_stamp_now() -> String {
let now = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap_or_default();
let t = local_tm(now.as_nanos() as i64);
format!("{:04}{:02}{:02}-{:02}{:02}", t.tm_year + 1900, t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min)
}
rust/src/tui/modal.rs
+229
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//! The generic modal frame: a centred, clamped, scrollable overlay.
use super::canvas::{rgb, Canvas, Style, BOLD, BOX_ASCII, BOX_ROUND, FAINT};
use super::model::{Cmd, Hit, HitAct, Key, Model};
use super::pad_right;
use super::search::LineEditor;
use crate::inventory::Tree;
use crate::textutil;
use crate::treemap::Rect;
/// A run of styled text; a line is a list of spans.
pub(crate) struct Span {
pub s: String,
pub st: Option<Style>, // None = modal default
}
pub(crate) type Line = Vec<Span>;
pub(crate) fn txt(s: impl Into<String>) -> Line {
vec![Span { s: s.into(), st: None }]
}
pub(crate) fn styled(s: impl Into<String>, st: Style) -> Line {
vec![Span { s: s.into(), st: Some(st) }]
}
pub(crate) fn kv(k: &str, v: impl Into<String>, kst: Style, vst: Style) -> Line {
vec![Span { s: pad_right(k, 18), st: Some(kst) }, Span { s: v.into(), st: Some(vst) }]
}
/// An overlay. Modals receive all keys while open; Esc always closes them
/// (handled by the frame before the modal sees it, unless the modal is
/// editing text).
pub(crate) trait Modal {
fn title(&self) -> String;
/// Rebuilt every frame, so resizes reflow.
fn content(&self, m: &mut Model, tr: &Tree, width: i32) -> Vec<Line>;
fn footer(&self, m: &Model) -> String;
fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd);
/// Preferred inner width.
fn width(&self) -> i32;
/// Modals that consume printable keys return their editor.
fn editor(&mut self) -> Option<&mut LineEditor> {
None
}
}
/// Wraps a modal with scroll state.
pub(crate) struct ModalFrame {
pub md: Box<dyn Modal>,
pub scroll: i32,
pub view_h: i32, // content rows visible in the last paint
pub content_n: i32,
}
impl ModalFrame {
pub fn clamp_scroll(&mut self) {
self.scroll = 0.max(self.scroll.min(self.content_n - self.view_h));
}
}
impl Model {
pub fn open_modal(&mut self, md: Box<dyn Modal>) {
self.modals.push(ModalFrame { md, scroll: 0, view_h: 0, content_n: 0 });
self.dirty = true;
}
pub fn close_modal(&mut self) {
self.modals.pop();
self.dirty = true;
}
pub fn modal_key(&mut self, tr: &Tree, key: &Key) -> Cmd {
let k = key.name.as_str();
let idx = self.modals.len() - 1;
let editing = self.modals[idx].md.editor().is_some();
if editing && k != "esc" && k != "enter" {
if let Some(ed) = self.modals[idx].md.editor() {
ed.key(key);
}
return Cmd::None;
}
if !editing {
let f = &mut self.modals[idx];
let page = (f.view_h - 1).max(1);
let scrolled = match k {
"esc" | "q" => {
self.close_modal();
return Cmd::None;
}
"up" | "k" => Some(f.scroll - 1),
"down" | "j" => Some(f.scroll + 1),
"pgup" => Some(f.scroll - page),
"pgdown" | "space" => Some(f.scroll + page),
"home" => Some(0),
"end" => Some(f.content_n),
_ => None,
};
if let Some(s) = scrolled {
f.scroll = s;
f.clamp_scroll();
return Cmd::None;
}
}
// Modal-specific keys. The frame is taken out while the modal runs;
// if it opens another modal, that one stacks above it.
let mut f = self.modals.remove(idx);
let (close, cmd) = f.md.key(self, tr, k);
if close {
self.dirty = true;
} else {
self.modals.insert(idx.min(self.modals.len()), f);
}
cmd
}
/// Dims the base screen and draws the top modal centred, clamped to the
/// terminal with a one-cell margin. Content that does not fit scrolls.
pub fn paint_modal(&mut self, tr: &Tree, cv: &mut Canvas) {
let t = self.theme.clone();
// Dim everything underneath.
cv.restyle(Rect { x: 0, y: 0, w: cv.w, h: cv.h }, |mut s| {
if t.mono {
s.attr |= FAINT;
return s;
}
s.fg = s.fg.mix(t.bg, 0.6);
s.bg = s.bg.mix(rgb(0, 0, 0), 0.45);
s.attr &= !BOLD;
s
});
let mut f = self.modals.pop().unwrap();
let max_w = cv.w - 2;
let w = (f.md.width() + 4).min(max_w).max(30.min(max_w));
let inner = w - 4;
let lines = f.md.content(self, tr, inner);
let foot = f.md.footer(self);
let mut chrome = 4; // border top/bottom, title rule
if !foot.is_empty() {
chrome += 2;
}
let h = (lines.len() as i32 + chrome).min(cv.h - 2).max((chrome + 1).min(cv.h));
let (x0, y0) = ((cv.w - w) / 2, (cv.h - h) / 2);
let r = Rect { x: x0, y: y0, w, h };
let bg = if t.panel_bg.is_default() { t.bg } else { t.panel_bg };
let base = Style::new(t.fg, bg);
// Drop shadow.
if !t.mono {
let black = |mut s: Style| {
s.bg = rgb(0, 0, 0);
s
};
cv.restyle(Rect { x: x0 + 1, y: y0 + h, w, h: 1 }, black);
cv.restyle(Rect { x: x0 + w, y: y0 + 1, w: 1, h }, black);
}
cv.fill(r, " ", base);
let border = Style::new(t.accent, bg).with(BOLD);
cv.draw_box(r, if t.ascii { BOX_ASCII } else { BOX_ROUND }, border);
cv.text(x0 + 2, y0 + 1, &f.md.title().to_uppercase(), inner, Style::new(t.accent, bg).with(BOLD));
let rule = if t.ascii { "-" } else { "─" };
cv.hline(x0 + 1, y0 + 2, w - 2, rule, Style::new(t.faint, bg));
f.view_h = h - chrome;
f.content_n = lines.len() as i32;
f.clamp_scroll();
let mut i = 0;
while i < f.view_h && ((f.scroll + i) as usize) < lines.len() {
let mut x = x0 + 2;
for sp in &lines[(f.scroll + i) as usize] {
let st = match sp.st {
Some(mut st) => {
if st.bg.is_default() {
st.bg = bg;
}
st
}
None => base,
};
x += cv.text(x, y0 + 3 + i, &sp.s, x0 + 2 + inner - x, st);
}
i += 1;
}
let n = lines.len() as i32;
if n > f.view_h && f.view_h > 0 {
let mut ind = format!(
"{}–{}/{}",
textutil::count(f.scroll as i64 + 1),
textutil::count((f.scroll + f.view_h).min(n) as i64),
textutil::count(n as i64)
);
if f.scroll > 0 {
ind = format!("▲ {ind}");
}
if f.scroll + f.view_h < n {
ind += " ▼";
}
cv.text_right(x0 + 1, y0 + 1, w - 3, &ind, Style::new(t.muted, bg));
}
if !foot.is_empty() {
cv.hline(x0 + 1, y0 + h - 3, w - 2, rule, Style::new(t.faint, bg));
cv.text(x0 + 2, y0 + h - 2, &foot, inner, Style::new(t.muted, bg));
}
self.modals.push(f);
self.hits.clear();
self.hits.push(Hit { r, act: HitAct::None });
}
}
/// Breaks s into chunks of at most w cells (used for long paths).
pub(crate) fn wrap(s: &str, w: i32) -> Vec<String> {
if w <= 0 {
return Vec::new();
}
let mut out = Vec::new();
let mut cur = String::new();
let mut cw = 0;
textutil::clusters(s, |c, cwid| {
if cw + cwid as i32 > w {
out.push(std::mem::take(&mut cur));
cw = 0;
}
cur.push_str(c);
cw += cwid as i32;
true
});
if !cur.is_empty() || out.is_empty() {
out.push(cur);
}
out
}
rust/src/tui/modals.rs
+438
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//! The concrete modals: item information, LOD group, help, confirmation and
//! save snapshot.
use super::canvas::{rgb, Style, BOLD};
use super::keys::default_snapshot_name;
use super::mapview::Group;
use super::modal::{kv, styled, txt, wrap, Line, Modal, Span};
use super::model::{Cmd, Model};
use super::search::LineEditor;
use super::{fmt_time, pad_left, pad_right, san, trunc, tw};
use crate::export;
use crate::filter;
use crate::inventory::{NodeId, Tree, FLAG_ALLOC_UNKNOWN, FLAG_HARDLINK_DUP, FLAG_INCOMPLETE, FLAG_LOOP, FLAG_SCANNED, FLAG_SKIPPED_FS, FLAG_SPARSE, FLAG_VIRTUAL_FS, NO_NODE};
use crate::platform;
use crate::textutil;
// ---- Item information -------------------------------------------------------
struct InfoModal {
id: NodeId,
btime: i64, // live birth time (0 if unknown)
}
pub(crate) fn new_info_modal(m: &Model, tr: &Tree, id: NodeId) -> Box<dyn Modal> {
let mut md = InfoModal { id, btime: 0 };
if !m.snapshot {
// Birth time is not kept in the inventory; read it live.
if let Ok(meta) = platform::lstat(&tr.path_bytes(id)) {
md.btime = meta.btime;
}
}
Box::new(md)
}
impl Modal for InfoModal {
fn width(&self) -> i32 {
72
}
fn title(&self) -> String {
"Item information".into()
}
fn footer(&self, m: &Model) -> String {
let mut s = format!("Esc close · c copy path · o {} · Space go to", reveal_verb());
if !m.opts.read_only && !m.snapshot {
s += &format!(" · d {}", delete_verb());
}
s
}
fn content(&self, m: &mut Model, tr: &Tree, w: i32) -> Vec<Line> {
let t = m.theme.clone();
let n = tr.node(self.id);
let ks = Style::new(t.muted, Default::default());
let vs = Style::new(t.fg, Default::default());
let bold = vs.with(BOLD);
let warn = Style::new(t.warn, Default::default()).with(BOLD);
let mut out: Vec<Line> = Vec::new();
let add = |out: &mut Vec<Line>, k: &str, v: String| out.push(kv(k, v, ks, vs));
let add_s = |out: &mut Vec<Line>, k: &str, v: String, st: Style| out.push(kv(k, v, ks, st));
let col = m.color_of(tr, self.id as i64);
let title = Style::new(col.mix(rgb(255, 255, 255), 0.3), Default::default()).with(BOLD);
for l in wrap(&san(&n.name), w) {
out.push(styled(l, title));
}
out.push(txt(""));
out.push(styled("Path", ks));
for l in wrap(&san(&tr.path_bytes(self.id)), w) {
out.push(styled(l, vs));
}
if san(&n.name).as_bytes() != &*n.name {
out.push(styled("Name contains control or invalid characters (shown escaped)", warn));
}
out.push(txt(""));
let mode = m.size_mode;
if n.is_dir() {
add_s(&mut out, "Total logical", format!("{} ({} bytes)", textutil::size(n.tot_size), textutil::count(n.tot_size)), bold);
add_s(&mut out, "Total allocated", format!("{} ({} bytes)", textutil::size(n.tot_alloc), textutil::count(n.tot_alloc)), bold);
add(&mut out, "Files", textutil::count(n.files as i64));
add(&mut out, "Directories", textutil::count(n.dirs as i64));
if n.parent != NO_NODE {
add(&mut out, "Of parent", textutil::percent(n.total(mode), tr.node(n.parent).total(mode)));
}
add(&mut out, "Of scan", textutil::percent(n.total(mode), tr.node(0).total(mode)));
let k = m.kids_of(tr, self.id);
if let Some(&first) = k.ids.first() {
add(&mut out, "Largest child", format!("{} ({})", san(&tr.node(first).name), textutil::size(k.sizes[0])));
}
if n.errors > 0 {
add_s(&mut out, "Errors beneath", textutil::count(n.errors as i64), Style::new(t.err, Default::default()).with(BOLD));
}
let state = if n.has(FLAG_INCOMPLETE) {
"incomplete (not fully read)"
} else if !n.has(FLAG_SCANNED) && m.scanning {
"scanning…"
} else if n.has(FLAG_SKIPPED_FS | FLAG_VIRTUAL_FS | FLAG_LOOP) {
"not descended"
} else {
"complete"
};
add(&mut out, "Scan state", state.into());
} else {
add_s(&mut out, "Logical size", format!("{} ({} bytes)", textutil::size(n.size), textutil::count(n.size)), bold);
let alloc = if n.has(FLAG_ALLOC_UNKNOWN) {
"unknown on this platform".to_string()
} else {
format!("{} ({} bytes)", textutil::size(n.alloc), textutil::count(n.alloc))
};
add_s(&mut out, "Allocated size", alloc, bold);
if n.parent != NO_NODE {
add(&mut out, "Of parent", textutil::percent(n.own(mode), tr.node(n.parent).total(mode)));
}
}
if let Some(r) = &m.search.result {
add(&mut out, "Matching filter", textutil::size(r.size(self.id)));
}
if let Some(d) = &m.opts.diff {
match d.old_size(self.id, mode) {
Some(old) => {
add(&mut out, "In old snapshot", textutil::size(old));
add_s(&mut out, "Change", textutil::signed_size(n.total(mode) - old), bold);
}
None => add_s(&mut out, "Change", "new since old snapshot".into(), Style::new(t.diff_new, Default::default()).with(BOLD)),
}
}
out.push(txt(""));
add(&mut out, "Type", n.kind.name().into());
if !n.is_dir() {
let e = tr.ext_name(n);
if !e.is_empty() {
add(&mut out, "Extension", textutil::sanitize(e));
}
add(&mut out, "Category", n.cat.name().into());
}
out.push(txt(""));
if n.mtime > 0 {
add(&mut out, "Modified", fmt_time(n.mtime));
}
if self.btime > 0 {
add(&mut out, "Created", fmt_time(self.btime));
}
out.push(txt(""));
add(&mut out, "Mode", platform::mode::string(n.mode));
add(&mut out, "Owner", textutil::sanitize(&platform::user_name(n.uid)));
add(&mut out, "Group", textutil::sanitize(&platform::group_name(n.gid)));
if !n.is_dir() {
add(&mut out, "Hard links", n.nlink.to_string());
let sparse = if n.has(FLAG_SPARSE) {
format!("Yes (or compressed) — {} not allocated", textutil::size(n.size - n.alloc))
} else {
"No".into()
};
add(&mut out, "Sparse", sparse);
}
let fl = export::flag_list(n.flags & !(FLAG_SCANNED | FLAG_SPARSE));
if !fl.is_empty() {
add_s(&mut out, "Flags", fl.join(", "), warn);
}
if n.has(FLAG_HARDLINK_DUP) {
out.push(styled("Another path to this inode was counted; this one adds nothing to totals.", ks));
}
if m.snapshot {
out.push(txt(""));
out.push(styled("From snapshot — metadata as recorded, not live.", ks));
}
out
}
fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd) {
match k {
"c" => (false, m.copy_path(&tr.path_bytes(self.id))),
"o" => {
m.sel = self.id as i64;
// Headless, o navigates the map, which the modal would cover.
let c = m.reveal(tr);
(platform::headless(), c)
}
"enter" => (true, Cmd::None),
"g" | "right" => {
m.jump_to(tr, self.id);
(true, Cmd::None)
}
"d" | "delete" => {
m.sel = self.id as i64;
(true, m.request_trash(tr))
}
_ => (false, Cmd::None),
}
}
}
// ---- LOD group ------------------------------------------------------------------
struct GroupModal {
g: Group,
}
pub(crate) fn new_group_modal(g: Group) -> Box<dyn Modal> {
Box::new(GroupModal { g })
}
impl Modal for GroupModal {
fn width(&self) -> i32 {
70
}
fn title(&self) -> String {
"Smaller items (grouped)".into()
}
fn footer(&self, _: &Model) -> String {
"Esc close · Space shows them in the list view".into()
}
fn content(&self, m: &mut Model, tr: &Tree, w: i32) -> Vec<Line> {
let t = m.theme.clone();
let ids = self.g.ids();
let mut out = vec![
txt(format!("{} items too small to draw individually at this size,", textutil::count(ids.len() as i64))),
txt(format!("totalling {}. Zoom in or enlarge the terminal to see them.", textutil::size(self.g.size))),
txt(""),
];
for (i, &id) in ids.iter().enumerate() {
if i == 200 {
out.push(styled(format!("… and {} more", textutil::count(ids.len() as i64 - 200)), Style::new(t.muted, Default::default())));
break;
}
let n = tr.node(id);
let mut name = san(&n.name);
if n.is_dir() {
name.push('/');
}
out.push(vec![
Span { s: pad_left(&textutil::size(m.size_of(tr, id)), 11) + " ", st: Some(Style::new(t.muted, Default::default())) },
Span { s: trunc(&name, w - 13), st: Some(Style::new(m.color_of(tr, id as i64).mix(t.fg, 0.4), Default::default())) },
]);
}
out
}
fn key(&mut self, m: &mut Model, _: &Tree, k: &str) -> (bool, Cmd) {
if k == "enter" {
m.sel = self.g.ids()[0] as i64;
m.set_view_by_name("List");
return (true, Cmd::None);
}
(false, Cmd::None)
}
}
// ---- Help ---------------------------------------------------------------------
struct HelpModal;
pub(crate) fn new_help_modal() -> Box<dyn Modal> {
Box::new(HelpModal)
}
impl Modal for HelpModal {
fn width(&self) -> i32 {
78
}
fn title(&self) -> String {
"Keyboard reference".into()
}
fn footer(&self, _: &Model) -> String {
"Esc close · ↑↓ scroll".into()
}
fn content(&self, m: &mut Model, _: &Tree, _: i32) -> Vec<Line> {
let t = m.theme.clone();
let h = Style::new(t.accent, Default::default()).with(BOLD);
let k = Style::new(t.sel, Default::default()).with(BOLD);
let d = Style::new(t.fg, Default::default());
let muted = Style::new(t.muted, Default::default());
let mut out: Vec<Line> = Vec::new();
let sec = |out: &mut Vec<Line>, s: &str| {
if !out.is_empty() {
out.push(txt(""));
}
out.push(styled(s, h));
};
let row = |out: &mut Vec<Line>, keys: &str, desc: &str| {
out.push(vec![Span { s: format!(" {}", pad_right(keys, 19)), st: Some(k) }, Span { s: desc.into(), st: Some(d) }]);
};
sec(&mut out, "NAVIGATION");
row(&mut out, "↑ ↓ ← → hjkl", "move spatially through the treemap");
row(&mut out, "Enter", "inspect the selected item");
row(&mut out, "Space →", "zoom into the selected directory");
row(&mut out, "Backspace ←", "zoom out one level");
row(&mut out, "Home", "back to the scan root");
row(&mut out, "click / dbl-click", "select / zoom (mouse)");
row(&mut out, "wheel", "zoom in/out (map), scroll (lists)");
sec(&mut out, "SEARCH & FILTER");
row(&mut out, "/", "search or filter; the map shows only matches");
row(&mut out, "Esc", "clear the filter");
out.push(styled(" ubuntu *.iso size > 5GB ext IN (iso,qcow2) age > 365d", muted));
out.push(styled(" path contains cache AND NOT type = dir owner = andy flag = sparse", muted));
let fields: Vec<&str> = filter::FIELDS.split_whitespace().collect();
let split = 7.min(fields.len());
out.push(styled(format!(" fields: {}", fields[..split].join(" ")), muted));
out.push(styled(format!(" {}", fields[split..].join(" ")), muted));
out.push(styled(" sizes: KiB/MiB/GiB (1024), kB/MB/GB (1000); ages: s min h d w mo y", muted));
sec(&mut out, "VIEWS");
row(&mut out, "Tab Shift+Tab", "next / previous view");
row(&mut out, "1 – 7", "jump to a view");
row(&mut out, "x", "file types (extension statistics)");
row(&mut out, "g", "top lists: largest, oldest, sparse, hard links …");
row(&mut out, "e", "scan information and errors");
row(&mut out, "D", "find duplicate files (reads file contents)");
sec(&mut out, "APPLICATION");
row(&mut out, "a", "toggle allocated / logical (apparent) size");
row(&mut out, "c", "copy path to clipboard");
row(&mut out, "o", reveal_verb());
if !m.opts.read_only {
row(&mut out, "d", &format!("{} (asks first)", delete_verb()));
}
row(&mut out, "s", "save snapshot");
row(&mut out, "r", "rescan");
row(&mut out, "T", "cycle colour theme");
row(&mut out, "Ctrl+C", "cancel scan; press again to quit");
row(&mut out, "q", "quit");
out.push(txt(""));
let units = if crate::textutil::si() { "SI (kB = 1000 bytes)" } else { "IEC (KiB = 1024 bytes)" };
out.push(styled(format!("Sizes: {} · units: {units}", m.size_mode.name()), muted));
out
}
fn key(&mut self, _: &mut Model, _: &Tree, _: &str) -> (bool, Cmd) {
(false, Cmd::None)
}
}
// ---- Confirmation -------------------------------------------------------------
pub(crate) type OnYes = Box<dyn FnOnce(&mut Model) -> Cmd>;
pub(crate) struct ConfirmModal {
pub ttl: String,
pub body: Vec<String>,
pub yes: String,
pub on_yes: Option<OnYes>,
}
impl Modal for ConfirmModal {
fn width(&self) -> i32 {
self.body.iter().map(|b| tw(b)).fold(40, i32::max).min(90)
}
fn title(&self) -> String {
self.ttl.clone()
}
fn footer(&self, _: &Model) -> String {
format!("y {} · n / Esc cancel", self.yes)
}
fn content(&self, _: &mut Model, _: &Tree, w: i32) -> Vec<Line> {
self.body.iter().flat_map(|b| wrap(b, w)).map(txt).collect()
}
fn key(&mut self, m: &mut Model, _: &Tree, k: &str) -> (bool, Cmd) {
match k {
"y" | "Y" => (true, self.on_yes.take().map_or(Cmd::None, |f| f(m))),
"n" | "N" | "enter" => (true, Cmd::None),
_ => (false, Cmd::None),
}
}
}
// ---- Save snapshot ---------------------------------------------------------------
struct SaveModal {
ed: LineEditor,
}
pub(crate) fn new_save_modal(tr: &Tree) -> Box<dyn Modal> {
let mut md = SaveModal { ed: LineEditor::default() };
md.ed.set(&default_snapshot_name(&tr.stats.root));
Box::new(md)
}
impl Modal for SaveModal {
fn editor(&mut self) -> Option<&mut LineEditor> {
Some(&mut self.ed)
}
fn width(&self) -> i32 {
70
}
fn title(&self) -> String {
"Save snapshot".into()
}
fn footer(&self, _: &Model) -> String {
"Enter save · Esc cancel".into()
}
fn content(&self, m: &mut Model, _: &Tree, w: i32) -> Vec<Line> {
let t = &m.theme;
let mut out = vec![txt("File:")];
let s = textutil::sanitize(&self.ed.text());
for l in wrap(&(s + "█"), w) {
out.push(styled(l, Style::new(t.fg, Default::default()).with(BOLD)));
}
if m.scanning {
out.push(txt(""));
out.push(styled("The scan is still running: the snapshot will be marked incomplete.", Style::new(t.warn, Default::default())));
}
out
}
fn key(&mut self, m: &mut Model, _: &Tree, k: &str) -> (bool, Cmd) {
match k {
"esc" => (true, Cmd::None),
"enter" => {
let p = self.ed.text().trim().to_string();
if p.is_empty() {
return (false, Cmd::None);
}
let s = m.save_snapshot(p);
let i = m.info("Saving snapshot…");
(true, Cmd::batch(vec![s, i]))
}
_ => (false, Cmd::None),
}
}
}
/// Describe o and d, which change meaning on a headless system.
pub(crate) fn reveal_verb() -> &'static str {
if platform::headless() {
"show folder in map"
} else {
"reveal in file manager"
}
}
pub(crate) fn delete_verb() -> String {
if platform::headless() {
return "delete permanently".into();
}
format!("move to {}", platform::TRASH_NAME)
}
rust/src/tui/model.rs
+572
View File
@@ -0,0 +1,572 @@
//! The model: all UI state, the message handler and the frame cache.
//!
//! Threading: update and view run on the event-loop thread. The scan
//! controller mutates the inventory concurrently, so every read of tree data
//! happens under the tree's read lock, taken once per entry point (view,
//! handle_key, mouse handlers) and passed down as `&Tree`; helpers never lock
//! again (a recursive read lock can deadlock against a waiting writer). The
//! model itself is only touched on the event-loop thread.
use super::actions::DupState;
use super::canvas::Style;
use super::canvas::BOLD;
use super::data::Kids;
use super::mapview::TmLayout;
use super::modal::ModalFrame;
use super::search::SearchState;
use super::theme::{load_theme, Theme};
use super::views::View;
use crate::cancel::Cancel;
use crate::config::Settings;
use crate::duplicate;
use crate::filter::FilterResult;
use crate::inventory::{NodeId, SizeMode, Tree};
use crate::scan::Scanner;
use crate::snapshot;
use crate::textutil;
use crate::treemap::Rect;
use std::collections::HashMap;
use std::rc::Rc;
use std::sync::{Arc, RwLock};
use std::time::{Duration, Instant};
/// Begins a scan (or returns a loaded tree with no scanner). Called again
/// on rescan.
pub type StartFn = Arc<dyn Fn(Cancel) -> Result<(Option<Scanner>, Arc<RwLock<Tree>>), crate::Error> + Send + Sync>;
/// Configures the interactive session.
pub struct Options {
pub read_only: bool,
pub theme: String,
pub size_mode: SizeMode,
pub mouse: bool,
pub color: String, // auto, truecolor, 256, 16, none
pub save: String, // save a snapshot here when the scan completes
pub settings: Settings,
pub start: StartFn,
pub diff: Option<snapshot::Diff>, // compare mode
}
/// The colour capability of the terminal.
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub(crate) enum Profile {
TrueColor,
Ansi256,
Ansi,
Ascii,
}
/// A key press. name follows Bubble Tea's keystroke names ("a", "G",
/// "ctrl+c", "shift+tab", "space", "pgdown", …); text is the inserted
/// text for printable keys.
#[derive(Clone, Debug, Default)]
pub(crate) struct Key {
pub name: String,
pub text: String,
pub ctrl_alt: bool,
}
impl Key {
/// A key from its keystroke name, as the Go tests build them: single
/// characters insert themselves, "space" inserts " ".
pub fn from_name(s: &str) -> Key {
let text = match s {
"space" => " ".to_string(),
_ if s.chars().count() == 1 => s.to_string(),
_ => String::new(),
};
Key { name: s.to_string(), text, ctrl_alt: s.starts_with("ctrl+") || s.starts_with("alt+") }
}
}
#[derive(Clone, Copy, PartialEq, Eq, Debug)]
pub(crate) enum Button {
Left,
Right,
Middle,
}
/// Messages delivered to update.
pub(crate) enum Msg {
Size(i32, i32),
Tick,
ScanDone(Arc<RwLock<Tree>>), // identifies the scan by its tree
Filter { gen: u64, res: Option<FilterResult> },
FilterDebounce(u64),
DupDone { finder: Arc<duplicate::Finder>, groups: Option<Vec<duplicate::Group>> },
TrashDone { tree: Arc<RwLock<Tree>>, id: NodeId, err: Option<String>, done: String },
SaveDone { path: String, err: Option<String> },
Key(Key),
Click { x: i32, y: i32, button: Button },
Wheel { x: i32, y: i32, up: bool },
Motion { x: i32, y: i32 },
Quit, // SIGTERM
}
/// Side effects requested by update, executed by the event loop.
pub(crate) enum Cmd {
None,
Batch(Vec<Cmd>),
/// Runs on a background thread; its message is delivered to update.
Run(Box<dyn FnOnce() -> Msg + Send>),
/// Delivers the message after the delay.
Tick(Duration, Msg),
/// Puts text on the clipboard (OSC 52).
Clipboard(String),
}
impl Cmd {
pub fn run(f: impl FnOnce() -> Msg + Send + 'static) -> Cmd {
Cmd::Run(Box::new(f))
}
pub fn batch(v: Vec<Cmd>) -> Cmd {
let v: Vec<Cmd> = v.into_iter().filter(|c| !matches!(c, Cmd::None)).collect();
if v.is_empty() {
Cmd::None
} else {
Cmd::Batch(v)
}
}
/// Runs background commands synchronously and returns their messages
/// (ticks and clipboard writes are dropped). For tests and benchmarks.
pub fn run_sync(self) -> Vec<Msg> {
match self {
Cmd::Run(f) => vec![f()],
Cmd::Batch(v) => v.into_iter().flat_map(Cmd::run_sync).collect(),
_ => Vec::new(),
}
}
}
/// A clickable region recorded while painting.
pub(crate) struct Hit {
pub r: Rect,
pub act: HitAct,
}
#[derive(Clone, Copy)]
pub(crate) enum HitAct {
None,
SetView(usize),
ZoomTo(NodeId),
Block(i64),
Row(usize), // a row of the current view's table
}
pub(crate) fn group_id(parent: NodeId) -> i64 {
-1 - parent as i64
}
pub(crate) fn is_group(id: i64) -> bool {
id < 0
}
pub(crate) fn group_parent(id: i64) -> NodeId {
(-1 - id) as NodeId
}
pub(crate) const NO_SEL: i64 = 1 << 62;
/// MAPSIZE_DEBUG_PANIC=ui panics on the first key press; =scanner panics in
/// a background thread shortly after start. Lets developers verify terminal
/// restoration on crashes.
pub(crate) fn debug_panic() -> String {
std::env::var("MAPSIZE_DEBUG_PANIC").unwrap_or_default()
}
pub(crate) struct Model {
pub opts: Options,
pub theme: Rc<Theme>,
pub scanner: Option<Scanner>,
pub tree: Arc<RwLock<Tree>>,
pub cancel: Cancel,
pub scanning: bool,
pub snapshot: bool, // tree was loaded from a snapshot (not the live filesystem)
pub ctrl_c: bool, // a Ctrl+C already cancelled the scan
pub w: i32,
pub h: i32,
pub profile: Profile,
pub size_mode: SizeMode,
pub views: Vec<View>,
pub view: usize,
pub zoom: NodeId,
pub sel: i64, // selected block: NodeId, or group_id(parent) for an LOD group
// user_sel is set once the user has chosen a selection; before that the
// selection follows the largest block.
pub user_sel: bool,
pub zoomed: bool, // zoom changed during this message (zoom_to set user_sel)
pub search: SearchState,
pub modals: Vec<ModalFrame>,
pub toast: String,
pub toast_style: Style,
pub toast_until: Instant,
// Frame and data caches.
pub dirty: bool,
pub frame: String,
pub data_ver: u64, // bumped when sizes/filters change; invalidates caches
pub last_data: Option<Instant>, // last time data_ver advanced during a scan
pub kids_cache: HashMap<NodeId, Rc<Kids>>,
pub kids_ver: u64,
pub tm: Option<Rc<TmLayout>>,
pub hits: Vec<Hit>, // clickable regions from the last frame
pub hover: i64,
pub last_click: Option<Instant>,
pub last_click_i: i64,
pub ticking: bool,
pub pending_zoom: Option<Vec<u8>>, // path to re-zoom after a rescan
pub dups: Option<DupState>,
pub quit: bool,
}
impl Model {
pub fn new(opts: Options, s: Option<Scanner>, t: Arc<RwLock<Tree>>, cancel: Cancel) -> Model {
let mut name = opts.theme.clone();
if (name.is_empty() || name == "default") && std::env::var_os("NO_COLOR").is_some() {
name = "mono".into();
}
let mut theme = load_theme(&name, &opts.settings);
if std::env::var("TERM").is_ok_and(|v| v.eq_ignore_ascii_case("linux"))
|| std::env::var_os("MAPSIZE_ASCII").is_some_and(|v| !v.is_empty())
{
theme.ascii = true;
}
let mut views = vec![View::Map, View::List(Default::default()), View::Ext(Default::default()),
View::Top(Default::default()), View::Info(Default::default())];
if opts.diff.is_some() {
views.push(View::Changes(Default::default()));
}
let scanning = s.is_some();
Model {
size_mode: opts.size_mode,
opts,
theme: Rc::new(theme),
scanner: s,
tree: t,
cancel,
scanning,
snapshot: !scanning,
ctrl_c: false,
w: 0,
h: 0,
profile: Profile::TrueColor,
views,
view: 0,
zoom: 0,
sel: NO_SEL,
user_sel: false,
zoomed: false,
search: SearchState::default(),
modals: Vec::new(),
toast: String::new(),
toast_style: Style::default(),
toast_until: Instant::now(),
dirty: true,
frame: String::new(),
data_ver: 0,
last_data: None,
kids_cache: HashMap::new(),
kids_ver: 0,
tm: None,
hits: Vec::new(),
hover: NO_SEL,
last_click: None,
last_click_i: NO_SEL,
ticking: false,
pending_zoom: None,
dups: None,
quit: false,
}
}
/// Starts ticking and waits for scan completion.
pub fn init(&mut self) -> Cmd {
if self.scanning {
let w = self.wait_scan();
let t = self.start_ticking();
return Cmd::batch(vec![w, t]);
}
Cmd::None
}
fn wait_scan(&self) -> Cmd {
let Some(s) = &self.scanner else { return Cmd::None };
let (rx, tree) = (s.done().clone(), s.tree.clone());
Cmd::run(move || {
let _ = rx.recv();
Msg::ScanDone(tree)
})
}
pub fn refresh_interval(&self) -> Duration {
let hz = if self.opts.settings.refresh_hz <= 0 { 10 } else { self.opts.settings.refresh_hz };
Duration::from_secs(1) / hz as u32
}
/// Returns a tick command unless one is already pending.
pub fn start_ticking(&mut self) -> Cmd {
if self.ticking {
return Cmd::None;
}
self.ticking = true;
Cmd::Tick(self.refresh_interval(), Msg::Tick)
}
fn needs_ticks(&self) -> bool {
self.scanning || Instant::now() < self.toast_until || self.dups.as_ref().is_some_and(|d| d.running)
}
/// Shows a transient status message.
pub fn notify(&mut self, s: String, st: Style) -> Cmd {
self.toast = s;
self.toast_style = st;
self.toast_until = Instant::now() + Duration::from_secs(4);
self.dirty = true;
self.start_ticking()
}
pub fn info(&mut self, s: impl Into<String>) -> Cmd {
let st = Style::new(self.theme.fg, self.theme.status_bg);
self.notify(s.into(), st)
}
pub fn warn(&mut self, s: impl Into<String>) -> Cmd {
let st = Style::new(self.theme.warn, self.theme.status_bg).with(BOLD);
self.notify(s.into(), st)
}
/// Marks size-dependent caches stale.
pub fn invalidate(&mut self) {
self.data_ver += 1;
self.dirty = true;
}
/// Handles one message.
pub fn update(&mut self, msg: Msg) -> Cmd {
match msg {
Msg::Size(w, h) => {
// Only record the size; layout is recomputed lazily in view,
// so a storm of resize events costs at most one layout per
// frame.
if w != self.w || h != self.h {
(self.w, self.h) = (w, h);
self.dirty = true;
}
Cmd::None
}
Msg::Tick => {
self.ticking = false;
if self.scanning {
self.dirty = true;
if self.last_data.is_none_or(|t| t.elapsed() >= Duration::from_millis(400)) {
self.invalidate();
self.last_data = Some(Instant::now());
}
self.resolve_pending_zoom();
}
if !self.toast.is_empty() && Instant::now() > self.toast_until {
self.toast.clear();
self.dirty = true;
}
let mut cmds = Vec::new();
if self.scanning
&& self.search.query.is_some()
&& self.search.applied_at.is_none_or(|t| t.elapsed() > Duration::from_secs(1))
{
cmds.push(self.apply_filter());
}
if self.dups.as_ref().is_some_and(|d| d.running) {
self.dirty = true;
}
if self.needs_ticks() {
cmds.push(self.start_ticking());
}
Cmd::batch(cmds)
}
Msg::ScanDone(t) => {
if !Arc::ptr_eq(&t, &self.tree) {
return Cmd::None; // a superseded scan
}
self.scan_finished()
}
Msg::Filter { gen, res } => self.filter_result(gen, res),
Msg::FilterDebounce(gen) => {
if gen == self.search.gen {
return self.apply_filter();
}
Cmd::None
}
Msg::DupDone { finder, groups } => self.dup_done(finder, groups),
Msg::TrashDone { tree, id, err, done } => self.trash_done(tree, id, err, done),
Msg::SaveDone { path, err } => match err {
Some(e) => self.warn(format!("Snapshot save failed: {}", textutil::sanitize(&e))),
None => self.info(format!("Saved snapshot {}", textutil::sanitize(&path))),
},
Msg::Key(k) => {
if debug_panic() == "ui" {
panic!("MAPSIZE_DEBUG_PANIC=ui: deliberate panic to test terminal restoration");
}
self.dirty = true;
let prev = self.sel;
self.zoomed = false;
let cmd = self.handle_key(&k);
self.note_selection(prev);
cmd
}
Msg::Click { x, y, button } => {
let prev = self.sel;
self.zoomed = false;
let cmd = self.mouse_click(x, y, button);
self.note_selection(prev);
cmd
}
Msg::Wheel { x, y, up } => self.mouse_wheel(x, y, up),
Msg::Motion { x, y } => {
self.mouse_motion(x, y);
Cmd::None
}
Msg::Quit => {
self.quit = true;
Cmd::None
}
}
}
/// Records that the user chose a selection explicitly.
fn note_selection(&mut self, prev: i64) {
if !self.zoomed && self.sel != prev && self.sel != NO_SEL {
self.user_sel = true;
}
}
fn scan_finished(&mut self) -> Cmd {
self.scanning = false;
self.invalidate();
self.resolve_pending_zoom();
let (total, files, dirs, errs, el, cancelled) = {
let t = self.tree.read().unwrap();
let st = &t.stats;
(t.node(0).total(self.size_mode), st.files + st.symlinks + st.others, st.dirs, st.total_errors(), st.elapsed(), st.cancelled)
};
let mut cmds = Vec::new();
let rate = (files + dirs) as f64 / el.as_secs_f64().max(0.001);
let mut msg = format!(
"✓ Scan complete {} · {} files · {} dirs · {} · {}/s",
textutil::duration(el), textutil::count(files), textutil::count(dirs), textutil::size(total), textutil::count(rate as i64)
);
if cancelled {
msg = "✗ Scan cancelled — totals are incomplete".into();
}
if errs > 0 {
msg += &format!(" · {} errors (e)", textutil::count(errs));
}
if cancelled || errs > 0 {
cmds.push(self.warn(msg));
} else {
let st = Style::new(self.theme.ok, self.theme.status_bg).with(BOLD);
cmds.push(self.notify(msg, st));
}
if !self.opts.save.is_empty() && !cancelled {
let p = self.opts.save.clone();
cmds.push(self.save_snapshot(p));
}
if self.search.query.is_some() {
cmds.push(self.apply_filter());
}
Cmd::batch(cmds)
}
/// First press cancels a running scan, second quits.
pub fn ctrl_c_pressed(&mut self) -> Cmd {
if self.scanning && !self.ctrl_c {
self.ctrl_c = true;
self.cancel.cancel();
return self.warn("Cancelling scan… press Ctrl+C again to quit");
}
self.quit = true;
Cmd::None
}
/// Called from handle_key, which holds the old tree's read lock (tr).
pub fn rescan(&mut self, tr: &Tree) -> Cmd {
if self.snapshot {
return self.warn("Snapshot loaded — nothing to rescan");
}
self.pending_zoom = Some(tr.path_bytes(self.zoom));
self.cancel.cancel();
let cancel = Cancel::new();
let (s, t) = match (self.opts.start)(cancel.clone()) {
Ok(v) => v,
Err(e) => {
cancel.cancel();
return self.warn(format!("Rescan failed: {}", textutil::sanitize(&e.to_string())));
}
};
self.scanning = s.is_some();
(self.scanner, self.tree, self.cancel, self.ctrl_c) = (s, t, cancel, false);
(self.zoom, self.sel) = (0, NO_SEL);
self.kids_cache.clear();
self.tm = None;
if let Some(d) = self.dups.take() {
d.cancel.cancel();
// Drop the duplicates view: its rows referred to the old tree.
if let Some(i) = self.views.iter().position(|v| matches!(v, View::Dups(_))) {
self.views.remove(i);
self.view = 0;
}
}
self.search.result = None;
self.search.gen += 1; // results computed against the old tree are discarded
self.invalidate();
let w = self.wait_scan();
let tk = self.start_ticking();
let i = self.info("Rescanning…");
let f = self.apply_filter();
Cmd::batch(vec![w, tk, i, f])
}
/// Re-zooms into the remembered directory once the new scan has
/// discovered it. Takes the read lock itself.
pub fn resolve_pending_zoom(&mut self) {
let Some(pz) = self.pending_zoom.clone() else { return };
let arc = self.tree.clone();
let t = arc.read().unwrap();
let root = t.path_bytes(0);
let rel: &[u8] = if pz == root {
b""
} else if let Some(r) = pz.strip_prefix(root.as_slice()).filter(|r| root.ends_with(b"/") || r.starts_with(b"/")) {
r
} else {
self.pending_zoom = None;
return;
};
let mut id = 0;
for part in rel.split(|&b| b == b'/').filter(|p| !p.is_empty()) {
match t.children(id).find(|(_, n)| &*n.name == part) {
Some((c, _)) => id = c,
None => return, // not discovered yet
}
}
self.zoom = id;
self.pending_zoom = None;
self.dirty = true;
}
/// Renders the frame. Expensive work happens only when something
/// changed; otherwise the cached frame is returned.
pub fn view(&mut self) -> &str {
if self.dirty || self.frame.is_empty() {
self.frame = self.render();
self.dirty = false;
}
&self.frame
}
}
rust/src/tui/mouse.rs
+121
View File
@@ -0,0 +1,121 @@
//! Mouse handling: clicks on recorded hit regions, wheel zoom/scroll and
//! hover.
use super::model::{is_group, Button, Cmd, HitAct, Model, NO_SEL};
use crate::inventory::{NodeId, Tree};
use std::time::{Duration, Instant};
const DOUBLE_CLICK: Duration = Duration::from_millis(400);
impl Model {
pub fn mouse_click(&mut self, x: i32, y: i32, button: Button) -> Cmd {
let arc = self.tree.clone();
let tr = arc.read().unwrap();
self.dirty = true;
if !self.modals.is_empty() {
// Clicking outside the modal closes it.
if self.hits.first().is_some_and(|h| !h.r.contains(x, y)) {
self.close_modal();
}
return Cmd::None;
}
if button == Button::Right {
if let Some(act) = self.hits.iter().find(|h| h.r.contains(x, y)).map(|h| h.act) {
let _ = self.run_hit(&tr, act, false);
return self.inspect_selection(&tr);
}
return Cmd::None;
}
if button != Button::Left {
return Cmd::None;
}
for i in (0..self.hits.len()).rev() {
if self.hits[i].r.contains(x, y) {
let key = (y as i64) << 32 | i as i64;
let double = self.last_click.is_some_and(|t| t.elapsed() < DOUBLE_CLICK) && self.last_click_i == key;
(self.last_click, self.last_click_i) = (Some(Instant::now()), key);
if double {
self.last_click_i = NO_SEL;
}
let act = self.hits[i].act;
return self.run_hit(&tr, act, double);
}
}
Cmd::None
}
fn run_hit(&mut self, tr: &Tree, act: HitAct, double: bool) -> Cmd {
match act {
HitAct::None => Cmd::None,
HitAct::SetView(i) => {
self.set_view(i);
Cmd::None
}
HitAct::ZoomTo(id) => {
self.zoom_to(tr, id);
Cmd::None
}
HitAct::Block(id) => self.click_block(tr, id, double),
HitAct::Row(i) => {
if let Some(tb) = self.views[self.view].table_mut() {
tb.cursor = i as i32;
}
if double {
return self.handle_key_name(tr, "enter");
}
Cmd::None
}
}
}
/// Selects a treemap block; a double click zooms (or inspects).
fn click_block(&mut self, tr: &Tree, id: i64, double: bool) -> Cmd {
self.sel = id;
if !double {
return Cmd::None;
}
if !is_group(id) && !tr.node(id as NodeId).is_dir() {
return self.inspect_selection(tr);
}
self.zoom_into_selection(tr)
}
pub fn mouse_wheel(&mut self, x: i32, y: i32, up: bool) -> Cmd {
let arc = self.tree.clone();
let tr = arc.read().unwrap();
self.dirty = true;
if let Some(f) = self.modals.last_mut() {
f.scroll += if up { -3 } else { 3 };
f.clamp_scroll();
return Cmd::None;
}
if up {
// Zoom towards the block under the pointer.
if let Some(l) = self.tm.clone() {
if self.view == 0 {
for b in &l.blocks {
if b.rect.contains(x, y) {
self.sel = b.id;
}
}
}
}
}
self.view_wheel(&tr, up)
}
pub fn mouse_motion(&mut self, x: i32, y: i32) {
let mut h = NO_SEL;
if let Some(l) = &self.tm {
if self.view == 0 && self.modals.is_empty() {
if let Some(b) = l.blocks.iter().find(|b| b.rect.contains(x, y)) {
h = b.id;
}
}
}
if h != self.hover {
self.hover = h;
self.dirty = true;
}
}
}
rust/src/tui/render.rs
+378
View File
@@ -0,0 +1,378 @@
//! Frame composition: panel geometry, tabs, breadcrumbs, info and status
//! lines.
use super::canvas::{Canvas, Color, Depth, Style, Attr, BOLD, REVERSE, UNDERLINE};
use super::model::{is_group, Hit, HitAct, Model, Profile};
use super::{fmt_date, san, tw, trunc_left};
use crate::brand;
use crate::inventory::{Kind, Node, Tree, FLAG_SCANNED, NO_NODE};
use crate::textutil;
use crate::treemap::Rect;
/// Minimum usable terminal size.
pub(crate) const MIN_W: i32 = 40;
pub(crate) const MIN_H: i32 = 10;
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
pub(crate) enum SizeClass {
TooSmall,
Small,
Medium,
Large,
}
/// The panel layout for one terminal size. It is recomputed from scratch for
/// every frame, so resizing can never leave stale geometry.
#[derive(Default)]
pub(crate) struct Geometry {
pub tabs: Rect, // empty in the small layout
pub crumbs: Rect,
pub main: Rect,
pub side: Rect,
pub info: Rect,
pub stat: Rect,
}
pub(crate) fn compute_geometry(w: i32, h: i32) -> (SizeClass, Geometry) {
let mut g = Geometry::default();
let class = if w < MIN_W || h < MIN_H {
return (SizeClass::TooSmall, g);
} else if w >= 150 && h >= 36 {
SizeClass::Large
} else if w >= 90 && h >= 22 {
SizeClass::Medium
} else {
SizeClass::Small
};
let mut y = 0;
if class >= SizeClass::Medium {
g.tabs = Rect { x: 0, y: 0, w, h: 1 };
y = 1;
}
g.crumbs = Rect { x: 0, y, w, h: 1 };
y += 1;
let mut bottom = h - 1;
g.stat = Rect { x: 0, y: h - 1, w, h: 1 };
if class >= SizeClass::Medium {
g.info = Rect { x: 0, y: h - 2, w, h: 1 };
bottom = h - 2;
}
g.main = Rect { x: 0, y, w, h: bottom - y };
if class == SizeClass::Large {
let sw = 40.min(w / 5);
g.side = Rect { x: 0, y, w: sw, h: g.main.h };
(g.main.x, g.main.w) = (sw, w - sw);
}
(class, g)
}
const SPINNER: [&str; 10] = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"];
impl Model {
pub fn render(&mut self) -> String {
let t = self.theme.clone();
let mut cv = Canvas::new(self.w, self.h, t.base());
self.hits.clear();
let (class, g) = compute_geometry(self.w, self.h);
if class == SizeClass::TooSmall {
self.render_too_small(&mut cv);
return cv.render(self.depth());
}
let arc = self.tree.clone();
let tr = arc.read().unwrap();
self.ensure_selection(&tr);
if g.tabs.w > 0 {
self.paint_tabs(&tr, &mut cv, g.tabs);
}
self.paint_crumbs(&tr, &mut cv, g.crumbs);
if !g.side.empty() {
self.paint_side(&tr, &mut cv, g.side);
}
self.paint_view(&tr, &mut cv, g.main);
if !g.info.empty() {
self.paint_info_line(&tr, &mut cv, g.info);
}
self.paint_status(&tr, &mut cv, g.stat, class);
if class == SizeClass::Small && self.search.editing {
self.paint_search(&mut cv, g.stat);
}
if !self.modals.is_empty() {
self.paint_modal(&tr, &mut cv);
}
cv.render(self.depth())
}
pub fn depth(&self) -> Depth {
match self.profile {
Profile::Ansi256 => Depth::C256,
Profile::Ansi => Depth::C16,
Profile::Ascii => Depth::None,
Profile::TrueColor => Depth::True,
}
}
fn render_too_small(&self, cv: &mut Canvas) {
let st = self.theme.muted();
let lines = ["Terminal too small".to_string(), format!("{}×{} — need {}×{}", self.w, self.h, MIN_W, MIN_H), "q quits".to_string()];
let y0 = 0.max((self.h - lines.len() as i32) / 2);
for (i, l) in lines.iter().enumerate() {
cv.text_centered(0, y0 + i as i32, self.w, l, st);
}
}
pub fn mono_rev(&self) -> Attr {
if self.theme.mono {
REVERSE
} else {
0
}
}
/// Draws the view tabs and mode chips.
fn paint_tabs(&mut self, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = self.theme.clone();
cv.fill(r, " ", t.header());
let badge = if t.ascii { format!(" {} ", brand::NAME) } else { format!(" ◧ {} ", brand::NAME) };
let mut x = cv.text(r.x, r.y, &badge, r.w, Style::new(t.text_on(t.accent), t.accent).with(BOLD | self.mono_rev()));
x += 1;
let names: Vec<&'static str> = self.views.iter().map(|v| v.name()).collect();
for (i, name) in names.iter().enumerate() {
let label = format!(" {name} ");
let st = if i == self.view {
Style::new(t.fg, t.bg).with(BOLD | UNDERLINE)
} else {
Style::new(t.muted, t.header_bg)
};
if x + tw(&label) >= r.w - 30 {
break;
}
let w = cv.text(x, r.y, &label, r.w - x, st);
self.hits.push(Hit { r: Rect { x, y: r.y, w, h: 1 }, act: HitAct::SetView(i) });
x += w;
}
// Right-aligned chips.
let mut chips: Vec<(String, Color)> = Vec::new();
if self.opts.read_only {
chips.push(("READ ONLY".into(), t.err));
}
if self.snapshot {
chips.push(("SNAPSHOT".into(), t.accent));
}
if self.opts.diff.is_some() {
chips.push(("COMPARE".into(), t.diff_new));
}
if self.search.query.is_some() {
chips.push(("FILTER".into(), t.warn));
}
if !tr.stats.excludes.is_empty() {
chips.push((format!("EXCL {}", tr.stats.excludes.len()), t.faint));
}
chips.push((self.size_mode.name().to_uppercase(), t.faint));
let mut rx = r.x + r.w;
for (s, bg) in chips.iter().rev() {
let s = format!(" {s} ");
let w = tw(&s);
if rx - w - 1 < x {
break;
}
rx -= w;
cv.text(rx, r.y, &s, w, Style::new(t.text_on(*bg), *bg).with(BOLD | self.mono_rev()));
rx -= 1;
}
}
/// Draws "/ › home › andy" breadcrumbs, truncated from the left, with the
/// zoom root's size on the right.
fn paint_crumbs(&mut self, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = self.theme.clone();
cv.fill(r, " ", t.header());
let z = tr.node(self.zoom);
let size = self.size_of(tr, self.zoom);
let mut right = format!(" {}", textutil::size(size));
let root = self.size_of(tr, 0);
if self.zoom != 0 && root > 0 {
right += &format!(" {} of scan", textutil::percent(size, root));
}
if let Some(res) = &self.search.result {
right += &format!(" ({} matches)", textutil::count(res.count));
}
if z.is_dir() {
right += &format!(" {} files", textutil::count(z.files as i64));
}
right += " ";
let mut rw = tw(&right);
if rw > r.w / 2 {
right = format!(" {} ", textutil::size_compact(size));
rw = tw(&right);
}
cv.text_right(r.x, r.y, r.w, &right, Style::new(t.header_fg, t.header_bg).with(BOLD));
let sep = if t.ascii { " > " } else { " › " };
let segs: Vec<(u32, String)> = tr.ancestors(self.zoom).into_iter().map(|id| (id, san(&tr.node(id).name))).collect();
let avail = r.w - rw - 2;
// Drop leading segments until the rest fits; keep at least the last.
let total = |from: usize| {
let mut w = 0;
for i in from..segs.len() {
w += tw(&segs[i].1);
if i > from {
w += tw(sep);
}
}
if from > 0 {
w += tw(&format!("…{sep}"));
}
w
};
let mut from = 0;
while from + 1 < segs.len() && total(from) > avail {
from += 1;
}
let mut x = r.x + 1;
if from > 0 {
x += cv.text(x, r.y, &format!("…{sep}"), avail, Style::new(t.muted, t.header_bg));
}
for i in from..segs.len() {
if i > from {
x += cv.text(x, r.y, sep, r.x + 1 + avail - x, Style::new(t.faint, t.header_bg));
}
let last = i == segs.len() - 1;
let st = if last { Style::new(t.fg, t.header_bg).with(BOLD) } else { Style::new(t.muted, t.header_bg) };
let s = if last { trunc_left(&segs[i].1, 1.max(r.x + 1 + avail - x)) } else { segs[i].1.clone() };
let w = cv.text(x, r.y, &s, r.x + 1 + avail - x, st);
self.hits.push(Hit { r: Rect { x, y: r.y, w, h: 1 }, act: HitAct::ZoomTo(segs[i].0) });
x += w;
}
}
/// Describes the selection (or shows the search editor).
fn paint_info_line(&mut self, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = self.theme.clone();
cv.fill(r, " ", t.panel());
if self.search.editing {
self.paint_search(cv, r);
return;
}
if self.search.query.is_some() {
self.paint_filter_summary(tr, cv, r);
return;
}
let d = self.describe_selection(tr);
cv.text(r.x + 1, r.y, &d, r.w - 2, t.panel());
}
pub fn describe_selection(&mut self, tr: &Tree) -> String {
let id = self.selected_node(tr);
if is_group(self.sel) {
if let Some(g) = self.group_info(self.sel) {
return format!(
"▸ {} smaller items · {} · {} of {} · Enter lists them",
textutil::count(g.ids().len() as i64),
textutil::size(g.size),
textutil::percent(g.size, self.size_of(tr, self.zoom)),
san(&tr.node(self.zoom).name)
);
}
}
if id == NO_NODE {
return "Nothing selected".into();
}
let n = tr.node(id);
let mut parts = vec![format!("▸ {}", san(&n.name)), textutil::size(self.size_of(tr, id))];
if n.parent != NO_NODE {
parts.push(textutil::percent(self.size_of(tr, id), self.size_of(tr, n.parent)) + " of parent");
}
if n.is_dir() {
parts.push(textutil::count(n.files as i64) + " files");
parts.push(textutil::count(n.dirs as i64) + " dirs");
if !n.has(FLAG_SCANNED) && self.scanning {
parts.push("scanning…".into());
}
} else {
parts.push(kind_label(n));
}
if n.mtime > 0 {
parts.push("modified ".to_string() + &fmt_date(n.mtime));
}
if n.errors > 0 {
parts.push(format!("{} errors", n.errors));
}
if let Some(d) = &self.opts.diff {
parts.push(textutil::signed_size(d.delta(tr, id, self.size_mode)) + " vs old snapshot");
}
parts.join(" · ")
}
/// Draws the live status bar.
fn paint_status(&mut self, tr: &Tree, cv: &mut Canvas, r: Rect, class: SizeClass) {
let t = self.theme.clone();
cv.fill(r, " ", t.status());
let help = if class == SizeClass::Small { " ? " } else { " ? help " };
let hw = cv.text(r.x + r.w - tw(help), r.y, help, r.w, Style::new(t.muted, t.status_bg));
let avail = r.w - hw - 1;
if !self.toast.is_empty() {
cv.text(r.x + 1, r.y, &self.toast, avail - 1, self.toast_style);
return;
}
let st = &tr.stats;
let root = tr.node(0);
let files = st.files + st.symlinks + st.others;
let mut parts: Vec<(String, Color)> = Vec::new();
if self.scanning {
let ms = std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap_or_default().as_millis();
let frame = if t.ascii { "*" } else { SPINNER[(ms / 100) as usize % SPINNER.len()] };
parts.push((format!("{frame} scanning"), t.accent));
} else if st.cancelled {
parts.push(("✗ cancelled".into(), t.warn));
} else if self.snapshot {
parts.push(("◉ snapshot".into(), t.accent));
} else {
parts.push(("✓ complete".into(), t.ok));
}
parts.push((textutil::count(files) + " files", t.status_fg));
parts.push((textutil::size(root.total(self.size_mode)), t.status_fg));
if self.scanning {
let el = st.elapsed();
let p = self.scanner.as_ref().map(|s| s.progress()).unwrap_or_default();
parts.push((textutil::count((p.entries as f64 / el.as_secs_f64().max(0.001)) as i64) + "/s", t.status_fg));
if class != SizeClass::Small {
parts.push((format!("{} workers", p.workers), t.muted));
parts.push((format!("queue {}", textutil::count(p.pending)), t.muted));
}
parts.push((textutil::duration(el), t.muted));
} else if !self.snapshot && class != SizeClass::Small {
parts.push((textutil::duration(st.elapsed()), t.muted));
}
let e = st.total_errors();
if e > 0 {
parts.push((format!("{} errors", textutil::count(e)), t.err));
}
if st.excluded > 0 {
parts.push((format!("{} excluded", textutil::count(st.excluded)), t.warn));
}
if st.incomplete() && !self.scanning && class != SizeClass::Small {
parts.push(("totals incomplete".into(), t.warn));
}
let mut x = r.x + 1;
for (i, (s, fg)) in parts.iter().enumerate() {
let s = if i > 0 { format!(" {s}") } else { s.clone() };
if x + tw(&s) > r.x + avail {
break;
}
let mut st = Style::new(*fg, t.status_bg);
if i == 0 {
st.attr = BOLD;
}
x += cv.text(x, r.y, &s, avail - x, st);
}
}
}
pub(crate) fn kind_label(n: &Node) -> String {
match n.kind {
Kind::File => n.cat.name().to_string(),
Kind::Symlink => "symlink".into(),
k => k.name().to_string(),
}
}
rust/src/tui/run.rs
+474
View File
@@ -0,0 +1,474 @@
//! The terminal runtime: raw mode and alternate screen, an input thread,
//! timers and background commands feeding one message loop, and a
//! line-diffing frame writer.
//!
//! The terminal is restored on every exit path: normal quit, errors and
//! panics (a panic hook restores it before the default hook prints; the
//! scanner aborts the process on worker panics after the hook has run).
use super::model::{debug_panic, Button, Cmd, Key, Model, Msg, Options, Profile};
use crate::brand;
use crate::cancel::Cancel;
use crate::textutil;
use crossbeam_channel::{after, select, Receiver, Sender};
use crossterm::event::{self, Event, KeyCode, KeyEvent, KeyEventKind, KeyModifiers, MouseButton, MouseEventKind};
use crossterm::{cursor, execute, terminal};
use std::fmt::Write as _;
use std::io::{self, Write};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::{Arc, Once};
use std::time::{Duration, Instant};
/// Whether the terminal is currently in TUI mode (raw, alternate screen).
static ACTIVE: AtomicBool = AtomicBool::new(false);
/// Set by the SIGTERM handler; the input thread turns it into a quit.
static TERMINATED: AtomicBool = AtomicBool::new(false);
/// Mouse off (1000/1002/1003/1015/1006), bracketed paste off, cursor on,
/// main screen.
const RESTORE: &str = "\x1b[?1006l\x1b[?1015l\x1b[?1003l\x1b[?1002l\x1b[?1000l\x1b[?2004l\x1b[?25h\x1b[?1049l";
fn write_raw(s: &str) {
let mut b = s.as_bytes();
while !b.is_empty() {
let n = unsafe { libc::write(1, b.as_ptr().cast(), b.len()) };
if n <= 0 {
return;
}
b = &b[n as usize..];
}
}
/// Leaves TUI mode. Safe to call repeatedly and from the panic hook (it
/// writes directly to fd 1, so it cannot block on a stdout lock).
fn restore_terminal() {
if ACTIVE.swap(false, Ordering::SeqCst) {
write_raw(RESTORE);
let _ = terminal::disable_raw_mode();
}
}
fn install_panic_hook() {
static ONCE: Once = Once::new();
ONCE.call_once(|| {
let prev = std::panic::take_hook();
std::panic::set_hook(Box::new(move |info| {
restore_terminal();
prev(info);
}));
extern "C" fn on_term(_: libc::c_int) {
TERMINATED.store(true, Ordering::SeqCst);
}
unsafe { libc::signal(libc::SIGTERM, on_term as *const () as libc::sighandler_t) };
});
}
fn forced_profile(c: &str) -> Option<Profile> {
match c {
"truecolor" | "24bit" => Some(Profile::TrueColor),
"256" => Some(Profile::Ansi256),
"16" => Some(Profile::Ansi),
"none" => Some(Profile::Ascii),
_ => None,
}
}
/// Detects the colour profile from the environment (NO_COLOR, COLORTERM,
/// TERM). Over SSH COLORTERM is often not forwarded; --color overrides.
fn detect_profile() -> Profile {
let env = |k: &str| std::env::var(k).unwrap_or_default().to_lowercase();
let (term, ct) = (env("TERM"), env("COLORTERM"));
if !env("NO_COLOR").is_empty() || term == "dumb" {
return Profile::Ascii;
}
if ct == "truecolor" || ct == "24bit" || term.ends_with("-direct") {
return Profile::TrueColor;
}
if ["kitty", "alacritty", "wezterm", "ghostty", "foot", "contour", "rio"].iter().any(|t| term.contains(t)) {
return Profile::TrueColor;
}
if term.contains("256color") || !ct.is_empty() {
return Profile::Ansi256;
}
Profile::Ansi
}
/// Starts the interactive UI.
pub fn run(opts: Options) -> Result<(), crate::Error> {
let cancel = Cancel::new();
let (s, t) = (opts.start)(cancel.clone())?;
let forced = forced_profile(&opts.color);
if forced.is_none() && !opts.color.is_empty() && opts.color != "auto" {
cancel.cancel();
return Err(format!("invalid --color {:?} (auto, truecolor, 256, 16, none)", opts.color).into());
}
let mouse = opts.mouse;
let mut m = Model::new(opts, s, t, cancel.clone());
m.profile = forced.unwrap_or_else(detect_profile);
install_panic_hook();
if debug_panic() == "scanner" {
std::thread::spawn(|| {
std::thread::sleep(Duration::from_millis(500));
// Mirrors the scanner's guard: a worker panic aborts after the hook.
if std::panic::catch_unwind(|| panic!("MAPSIZE_DEBUG_PANIC=scanner: deliberate panic to test terminal restoration")).is_err() {
std::process::abort();
}
});
}
let res = enter_terminal(mouse).and_then(|_| event_loop(&mut m));
restore_terminal();
cancel.cancel();
m.cancel.cancel(); // a rescan may have replaced the token
Ok(res?)
}
fn enter_terminal(mouse: bool) -> io::Result<()> {
terminal::enable_raw_mode()?;
ACTIVE.store(true, Ordering::SeqCst);
let mut out = io::stdout();
execute!(out, terminal::EnterAlternateScreen, cursor::Hide, event::EnableBracketedPaste, terminal::SetTitle(brand::NAME))?;
if mouse {
execute!(out, event::EnableMouseCapture)?;
}
Ok(())
}
/// Bubble Tea keystroke name for a key event.
fn convert_key(ev: KeyEvent) -> Option<Key> {
if ev.kind == KeyEventKind::Release {
return None;
}
let m = ev.modifiers;
let (ctrl, alt, shift) = (m.contains(KeyModifiers::CONTROL), m.contains(KeyModifiers::ALT), m.contains(KeyModifiers::SHIFT));
let mut prefix = String::new();
if ctrl {
prefix += "ctrl+";
}
if alt {
prefix += "alt+";
}
let named = |n: &str| Some(Key { name: format!("{prefix}{}{n}", if shift { "shift+" } else { "" }), text: String::new(), ctrl_alt: ctrl || alt });
match ev.code {
KeyCode::Char(c) => {
let base = if c == ' ' { "space".to_string() } else if ctrl || alt { c.to_lowercase().collect() } else { c.to_string() };
let text = if ctrl || alt { String::new() } else { c.to_string() };
Some(Key { name: prefix + &base, text, ctrl_alt: ctrl || alt })
}
KeyCode::BackTab => Some(Key { name: format!("{prefix}shift+tab"), ..Default::default() }),
KeyCode::Enter => named("enter"),
KeyCode::Esc => named("esc"),
KeyCode::Tab => named("tab"),
KeyCode::Backspace => named("backspace"),
KeyCode::Delete => named("delete"),
KeyCode::Insert => named("insert"),
KeyCode::Home => named("home"),
KeyCode::End => named("end"),
KeyCode::PageUp => named("pgup"),
KeyCode::PageDown => named("pgdown"),
KeyCode::Up => named("up"),
KeyCode::Down => named("down"),
KeyCode::Left => named("left"),
KeyCode::Right => named("right"),
KeyCode::F(n) => named(&format!("f{n}")),
_ => None,
}
}
fn convert(ev: Event) -> Option<Msg> {
match ev {
Event::Key(k) => convert_key(k).map(Msg::Key),
Event::Resize(w, h) => Some(Msg::Size(w as i32, h as i32)),
Event::Mouse(me) => {
let (x, y) = (me.column as i32, me.row as i32);
match me.kind {
MouseEventKind::Down(b) => {
let button = match b {
MouseButton::Left => Button::Left,
MouseButton::Right => Button::Right,
MouseButton::Middle => Button::Middle,
};
Some(Msg::Click { x, y, button })
}
MouseEventKind::ScrollUp => Some(Msg::Wheel { x, y, up: true }),
MouseEventKind::ScrollDown => Some(Msg::Wheel { x, y, up: false }),
MouseEventKind::Moved | MouseEventKind::Drag(_) => Some(Msg::Motion { x, y }),
_ => None,
}
}
// Pastes are ignored, as in the Go version.
_ => None,
}
}
/// Reads terminal events until stopped.
fn input_thread(tx: Sender<Msg>, stop: Arc<AtomicBool>) {
while !stop.load(Ordering::Relaxed) {
if TERMINATED.load(Ordering::SeqCst) {
let _ = tx.send(Msg::Quit);
return;
}
match event::poll(Duration::from_millis(100)) {
Ok(true) => match event::read() {
Ok(ev) => {
if let Some(msg) = convert(ev) {
if tx.send(msg).is_err() {
return;
}
}
}
Err(_) => return,
},
Ok(false) => {}
Err(_) => return,
}
}
}
/// Executes commands: background closures on threads, timers in the loop,
/// clipboard writes into the output.
struct Runtime {
tx: Sender<Msg>,
timers: Vec<(Instant, Msg)>,
out: String, // pending escape sequences (clipboard)
}
impl Runtime {
fn exec(&mut self, cmd: Cmd) {
match cmd {
Cmd::None => {}
Cmd::Batch(v) => v.into_iter().for_each(|c| self.exec(c)),
Cmd::Run(f) => {
let tx = self.tx.clone();
std::thread::spawn(move || {
let _ = tx.send(f());
});
}
Cmd::Tick(d, msg) => self.timers.push((Instant::now() + d, msg)),
Cmd::Clipboard(s) => {
let _ = write!(self.out, "\x1b]52;c;{}\x07", base64(s.as_bytes()));
}
}
}
}
fn base64(b: &[u8]) -> String {
const A: &[u8; 64] = b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
let mut s = String::with_capacity(b.len().div_ceil(3) * 4);
for c in b.chunks(3) {
let n = (c[0] as u32) << 16 | (*c.get(1).unwrap_or(&0) as u32) << 8 | *c.get(2).unwrap_or(&0) as u32;
for i in 0..4 {
if i <= c.len() {
s.push(A[(n >> (18 - 6 * i) & 63) as usize] as char);
} else {
s.push('=');
}
}
}
s
}
/// Writes frames, rewriting only what changed since the last one: within a
/// changed line, the span between the first and last differing style run.
#[derive(Default)]
struct Screen {
prev: Vec<String>,
size: (i32, i32),
buf: String,
}
/// Splits a serialised line into its SGR-led runs as (start byte, start
/// column). The canvas emits an escape only to start a run (text is
/// sanitised), and the trailing reset is a zero-width run.
fn runs(l: &str) -> Vec<(usize, usize)> {
let starts: Vec<usize> = l.match_indices("\x1b[").map(|(i, _)| i).collect();
let mut col = 0;
let mut out = Vec::with_capacity(starts.len());
for (k, &s) in starts.iter().enumerate() {
let seg = &l[s..starts.get(k + 1).copied().unwrap_or(l.len())];
out.push((s, col));
col += textutil::width(&seg[seg.find('m').map_or(seg.len(), |p| p + 1)..]);
}
out
}
/// The changed parts of a line as (column, byte range of new): runs of new
/// that do not appear unchanged at the same column in old, grouped into
/// contiguous segments. Empty if the lines are equal.
fn line_diff(old: &str, new: &str) -> Vec<(usize, std::ops::Range<usize>)> {
if old == new {
return Vec::new();
}
let (ro, rn) = (runs(old), runs(new));
let end = |l: &str, r: &[(usize, usize)], k: usize| r.get(k + 1).map_or(l.len(), |x| x.0);
let mut changed = vec![true; rn.len()];
let (mut i, mut j) = (0, 0);
while i < ro.len() && j < rn.len() {
let (co, cn) = (ro[i].1, rn[j].1);
if co == cn {
changed[j] = old[ro[i].0..end(old, &ro, i)] != new[rn[j].0..end(new, &rn, j)];
(i, j) = (i + 1, j + 1);
} else if co < cn {
i += 1;
} else {
j += 1;
}
}
let mut out: Vec<(usize, std::ops::Range<usize>)> = Vec::new();
for (k, &c) in changed.iter().enumerate() {
if !c {
continue;
}
let r = rn[k].0..end(new, &rn, k);
match out.last_mut() {
Some(last) if last.1.end == r.start => last.1.end = r.end,
_ => out.push((rn[k].1, r)),
}
}
if out.is_empty() {
out.push((0, 0..new.len())); // a line without runs (cannot happen)
}
out
}
impl Screen {
fn draw(&mut self, out: &mut impl Write, frame: &str, w: i32, h: i32, extra: &str) -> io::Result<()> {
self.buf.clear();
self.buf.push_str("\x1b[?2026h"); // synchronized output, where supported
if (w, h) != self.size {
self.buf.push_str("\x1b[0m\x1b[2J");
self.prev.clear();
self.size = (w, h);
}
let mut n = 0;
for (y, l) in frame.split('\n').enumerate() {
match self.prev.get_mut(y) {
Some(p) => {
let d = line_diff(p, l);
for (col, r) in &d {
let _ = write!(self.buf, "\x1b[{};{}H{}", y + 1, col + 1, &l[r.clone()]);
}
if !d.is_empty() {
p.clear();
p.push_str(l);
}
}
None => {
let _ = write!(self.buf, "\x1b[{};1H{l}", y + 1);
self.prev.push(l.to_string());
}
}
n = y + 1;
}
self.prev.truncate(n);
self.buf.push_str(extra);
self.buf.push_str("\x1b[?2026l");
out.write_all(self.buf.as_bytes())?;
out.flush()
}
}
fn next_msg(rx: &Receiver<Msg>, timers: &[(Instant, Msg)]) -> Option<Msg> {
match timers.iter().map(|t| t.0).min() {
Some(d) => select! {
recv(rx) -> msg => msg.ok(),
recv(after(d.saturating_duration_since(Instant::now()))) -> _ => None,
},
None => rx.recv().ok(),
}
}
fn event_loop(m: &mut Model) -> io::Result<()> {
let (tx, rx) = crossbeam_channel::unbounded::<Msg>();
let stop = Arc::new(AtomicBool::new(false));
{
let (tx, stop) = (tx.clone(), stop.clone());
std::thread::spawn(move || input_thread(tx, stop));
}
let (w, h) = terminal::size()?;
let mut rt = Runtime { tx, timers: Vec::new(), out: String::new() };
rt.exec(m.update(Msg::Size(w as i32, h as i32)));
let init = m.init();
rt.exec(init);
let mut screen = Screen::default();
let mut stdout = io::stdout();
let mut last = String::new();
let res = loop {
if m.quit {
break Ok(());
}
let (w, h) = (m.w, m.h);
let frame = m.view();
if frame != last || !rt.out.is_empty() {
if let Err(e) = screen.draw(&mut stdout, frame, w, h, &rt.out) {
break Err(e);
}
last.clear();
last.push_str(frame);
rt.out.clear();
}
if let Some(msg) = next_msg(&rx, &rt.timers) {
let c = m.update(msg);
rt.exec(c);
}
// Fire due timers, then drain whatever else is queued before the next
// frame, so bursts (resize storms) cost one render.
let now = Instant::now();
let (due, later): (Vec<_>, Vec<_>) = std::mem::take(&mut rt.timers).into_iter().partition(|t| t.0 <= now);
rt.timers = later;
for (_, msg) in due {
let c = m.update(msg);
rt.exec(c);
}
while let Ok(msg) = rx.try_recv() {
if m.quit {
break;
}
let c = m.update(msg);
rt.exec(c);
}
};
stop.store(true, Ordering::Relaxed);
res
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn base64_matches_rfc4648() {
for (i, o) in [("", ""), ("f", "Zg=="), ("fo", "Zm8="), ("foo", "Zm9v"), ("foob", "Zm9vYg=="), ("foobar", "Zm9vYmFy")] {
assert_eq!(base64(i.as_bytes()), o);
}
}
#[test]
fn screen_rewrites_only_changed_lines() {
let mut s = Screen::default();
let mut out = Vec::new();
s.draw(&mut out, "a\nb\nc", 1, 3, "").unwrap();
out.clear();
s.draw(&mut out, "a\nX\nc", 1, 3, "").unwrap();
assert_eq!(String::from_utf8(out).unwrap(), "\x1b[?2026h\x1b[2;1HX\x1b[?2026l");
// Within a line only the differing style runs are rewritten.
let a = "\x1b[0;1mab\x1b[0;7m日x\x1b[0mcd\x1b[0m";
let b = "\x1b[0;1mab\x1b[0;7m日y\x1b[0mcd\x1b[0m";
assert_eq!(line_diff(a, b), vec![(2, 8..18)]);
assert_eq!(&b[8..18], "\x1b[0;7m日y");
assert!(line_diff(a, a).is_empty());
let c = "\x1b[0;2mab\x1b[0;7m日x\x1b[0mcz\x1b[0m";
assert_eq!(line_diff(a, c), vec![(0, 0..8), (5, 18..24)]);
}
#[test]
fn keys_use_bubbletea_names() {
let k = |code, m| convert_key(KeyEvent::new(code, m)).unwrap().name;
assert_eq!(k(KeyCode::Char('c'), KeyModifiers::CONTROL), "ctrl+c");
assert_eq!(k(KeyCode::Char('G'), KeyModifiers::SHIFT), "G");
assert_eq!(k(KeyCode::Char(' '), KeyModifiers::NONE), "space");
assert_eq!(k(KeyCode::BackTab, KeyModifiers::SHIFT), "shift+tab");
assert_eq!(k(KeyCode::PageDown, KeyModifiers::NONE), "pgdown");
assert_eq!(k(KeyCode::Backspace, KeyModifiers::ALT), "alt+backspace");
}
}
rust/src/tui/search.rs
+277
View File
@@ -0,0 +1,277 @@
//! The search/filter editor and background filter evaluation.
use super::canvas::{Canvas, Style, BOLD};
use super::model::{Cmd, Key, Model, Msg};
use super::{tw, trunc};
use crate::cancel::Cancel;
use crate::filter::{self, FilterResult, Query};
use crate::inventory::Tree;
use crate::textutil;
use crate::treemap::Rect;
use std::sync::Arc;
use std::time::{Duration, Instant, SystemTime};
/// A minimal single-line text editor.
#[derive(Default)]
pub(crate) struct LineEditor {
pub buf: Vec<char>,
pub cur: usize,
}
impl LineEditor {
pub fn text(&self) -> String {
self.buf.iter().collect()
}
pub fn set(&mut self, s: &str) {
self.buf = s.chars().collect();
self.cur = self.buf.len();
}
/// Applies an editing key; it reports whether the text changed and
/// whether the key was handled.
pub fn key(&mut self, k: &Key) -> (bool, bool) {
match k.name.as_str() {
"left" | "ctrl+b" => self.cur = self.cur.saturating_sub(1),
"right" | "ctrl+f" => self.cur = self.buf.len().min(self.cur + 1),
"home" | "ctrl+a" => self.cur = 0,
"end" | "ctrl+e" => self.cur = self.buf.len(),
"backspace" | "ctrl+h" => {
if self.cur > 0 {
self.buf.remove(self.cur - 1);
self.cur -= 1;
return (true, true);
}
}
"delete" | "ctrl+d" => {
if self.cur < self.buf.len() {
self.buf.remove(self.cur);
return (true, true);
}
}
"ctrl+u" => {
self.buf.drain(..self.cur);
self.cur = 0;
return (true, true);
}
"ctrl+k" => {
self.buf.truncate(self.cur);
return (true, true);
}
"ctrl+w" | "alt+backspace" => {
let mut i = self.cur;
while i > 0 && self.buf[i - 1] == ' ' {
i -= 1;
}
while i > 0 && self.buf[i - 1] != ' ' {
i -= 1;
}
self.buf.drain(i..self.cur);
self.cur = i;
return (true, true);
}
_ => {
if k.text.is_empty() || k.ctrl_alt {
return (false, false);
}
let rs: Vec<char> = k.text.chars().filter(|&r| r >= ' ' && r != '\x7f').collect();
if rs.is_empty() || self.buf.len() + rs.len() > 1024 {
return (false, true);
}
let n = rs.len();
self.buf.splice(self.cur..self.cur, rs);
self.cur += n;
return (true, true);
}
}
(false, true)
}
}
#[derive(Default)]
pub(crate) struct SearchState {
pub editing: bool,
pub ed: LineEditor,
pub query: Option<Arc<Query>>,
pub result: Option<FilterResult>,
pub err: String,
pub gen: u64,
pub busy: bool,
pub applied_at: Option<Instant>,
pub cancel: Option<Cancel>,
}
impl SearchState {
pub fn begin(&mut self) {
self.editing = true;
if let Some(q) = &self.query {
let s = q.to_string();
self.ed.set(&s);
}
}
}
impl Model {
pub fn search_key(&mut self, k: &Key) -> Cmd {
match k.name.as_str() {
"esc" => {
self.search.editing = false;
self.clear_filter();
return Cmd::None;
}
"enter" => {
self.search.editing = false;
if !self.search.err.is_empty() {
let e = format!("Invalid query: {}", self.search.err);
return self.warn(e);
}
return Cmd::None;
}
_ => {}
}
let (changed, _) = self.search.ed.key(k);
if changed {
return self.query_changed();
}
Cmd::None
}
/// Parses the editor contents and schedules a debounced apply.
pub fn query_changed(&mut self) -> Cmd {
let s = &mut self.search;
s.gen += 1;
let text = s.ed.text();
if text.is_empty() {
s.err.clear();
self.drop_filter();
return Cmd::None;
}
match filter::parse(&text, SystemTime::now()) {
Err(e) => {
s.err = e;
Cmd::None
}
Ok(q) => {
s.err.clear();
s.query = Some(Arc::new(q));
Cmd::Tick(Duration::from_millis(120), Msg::FilterDebounce(s.gen))
}
}
}
/// Replaces the filter with q and applies it immediately.
pub fn set_filter(&mut self, q: &str) -> Cmd {
self.search.ed.set(q);
self.search.editing = false;
let _ = self.query_changed();
if !self.search.err.is_empty() {
let e = format!("Invalid query: {}", self.search.err);
return self.warn(e);
}
self.apply_filter()
}
/// Evaluates the current query in the background. The tree is
/// read-locked by the worker; stale results are discarded by generation.
pub fn apply_filter(&mut self) -> Cmd {
let Some(q) = self.search.query.clone() else { return Cmd::None };
if let Some(c) = self.search.cancel.take() {
c.cancel();
}
let c = Cancel::new();
self.search.cancel = Some(c.clone());
self.search.busy = true;
self.search.applied_at = Some(Instant::now());
let (t, mode, gen) = (self.tree.clone(), self.size_mode, self.search.gen);
Cmd::run(move || {
let res = {
let g = t.read().unwrap();
filter::apply(&c, &g, q, mode)
};
Msg::Filter { gen, res }
})
}
pub fn filter_result(&mut self, gen: u64, res: Option<FilterResult>) -> Cmd {
let s = &mut self.search;
if gen != s.gen || s.query.is_none() {
return Cmd::None;
}
s.busy = false;
let Some(res) = res else { return Cmd::None };
s.result = Some(res);
self.invalidate();
Cmd::None
}
/// Removes the active filter but keeps the editor open.
pub fn drop_filter(&mut self) {
let s = &mut self.search;
if let Some(c) = &s.cancel {
c.cancel();
}
(s.query, s.result, s.busy) = (None, None, false);
self.invalidate();
}
pub fn clear_filter(&mut self) {
self.drop_filter();
self.search.ed.set("");
self.search.err.clear();
self.search.gen += 1;
}
pub fn paint_search(&self, cv: &mut Canvas, r: Rect) {
let t = &self.theme;
let s = &self.search;
let st = Style::new(t.fg, t.panel_bg);
cv.fill(r, " ", st);
let mut x = r.x + 1;
x += cv.text(x, r.y, "/ ", 2, Style::new(t.accent, t.panel_bg).with(BOLD));
let mut status_st = Style::new(t.muted, t.panel_bg);
let status = if !s.err.is_empty() {
status_st.fg = t.err;
format!("✗ {}", s.err)
} else if s.busy {
"filtering…".into()
} else if let Some(res) = &s.result {
format!("{} matches · {}", textutil::count(res.count), textutil::size(res.total))
} else if s.ed.buf.is_empty() {
"name, *.iso, size > 1GB, ext IN (iso,vmdk), age > 365d … Enter keep · Esc clear".into()
} else {
String::new()
};
let sw = tw(&status).min(r.w / 2);
let avail = r.w - (x - r.x) - sw - 3;
// Scroll the text so the cursor stays visible.
let text = &s.ed.buf;
let start = if s.ed.cur as i32 > avail - 1 { (s.ed.cur as i32 - avail + 1) as usize } else { 0 };
let end = text.len().min(start + avail.max(0) as usize).max(start);
let vis: String = text[start..end].iter().collect();
cv.text(x, r.y, &textutil::sanitize(&vis), avail, st);
let before: String = text[start..s.ed.cur].iter().collect();
let cx = x + tw(&textutil::sanitize(&before));
let under = if s.ed.cur < text.len() { textutil::sanitize(&text[s.ed.cur].to_string()) } else { " ".into() };
cv.text(cx, r.y, &under, 2, Style::new(t.panel_bg, t.fg).with(self.mono_rev()));
cv.text_right(r.x, r.y, r.w - 1, &trunc(&status, sw), status_st);
}
pub fn paint_filter_summary(&self, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = &self.theme;
let s = &self.search;
let mut x = r.x + 1;
x += cv.text(x, r.y, " FILTER ", 8, Style::new(t.text_on(t.warn), t.warn).with(BOLD | self.mono_rev()));
let q = s.query.as_ref().map(|q| q.to_string()).unwrap_or_default();
x += cv.text(x + 1, r.y, &textutil::sanitize(&q), r.w / 2, Style::new(t.fg, t.panel_bg).with(BOLD)) + 1;
let mut info = "filtering…".to_string();
if let (Some(res), false) = (&s.result, s.busy) {
info = format!(
"{} matches · {} of {} · / edit · Esc clear",
textutil::count(res.count),
textutil::size(res.total),
textutil::size(tr.node(0).total(self.size_mode))
);
}
cv.text(x + 2, r.y, &info, r.x + r.w - x - 3, Style::new(t.muted, t.panel_bg));
}
}
rust/src/tui/side.rs
+111
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@@ -0,0 +1,111 @@
//! The large-layout side panel: directory summary, category breakdown and
//! the selected item.
use super::canvas::{Canvas, Style, BOLD};
use super::modal::wrap;
use super::model::{is_group, Model};
use super::render::kind_label;
use super::san;
use crate::inventory::{Category, Tree, NO_NODE};
use crate::textutil;
use crate::treemap::Rect;
impl Model {
pub fn paint_side(&mut self, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = self.theme.clone();
let ps = t.panel();
cv.fill(r, " ", ps);
cv.fill(Rect { x: r.x + r.w - 1, y: r.y, w: 1, h: r.h }, "│", Style::new(t.faint, t.panel_bg));
let w = r.w - 3;
let x = r.x + 1;
let mut y = r.y + 1;
let end = r.y + r.h;
let head = |cv: &mut Canvas, y: &mut i32, s: &str| {
if *y < end {
cv.text(x, *y, s, w, Style::new(t.accent, t.panel_bg).with(BOLD));
*y += 1;
}
};
let kvl = |cv: &mut Canvas, y: &mut i32, k: &str, v: &str, vs: Style| {
if *y < end {
cv.text(x, *y, k, w, Style::new(t.muted, t.panel_bg));
cv.text_right(x, *y, w, v, vs);
*y += 1;
}
};
let val = Style::new(t.fg, t.panel_bg).with(BOLD);
let plain = Style::new(t.fg, t.panel_bg);
let z = tr.node(self.zoom);
head(cv, &mut y, "DIRECTORY");
for l in wrap(&san(&z.name), w) {
if y < end {
cv.text(x, y, &l, w, Style::new(t.fg, t.panel_bg).with(BOLD));
y += 1;
}
}
y += 1;
kvl(cv, &mut y, "Size", &textutil::size(self.size_of(tr, self.zoom)), val);
kvl(cv, &mut y, "Logical", &textutil::size(z.tot_size), plain);
kvl(cv, &mut y, "Allocated", &textutil::size(z.tot_alloc), plain);
kvl(cv, &mut y, "Files", &textutil::count(z.files as i64), plain);
kvl(cv, &mut y, "Directories", &textutil::count(z.dirs as i64), plain);
if z.errors > 0 {
kvl(cv, &mut y, "Errors", &textutil::count(z.errors as i64), Style::new(t.err, t.panel_bg).with(BOLD));
}
y += 1;
// Category breakdown with proportional bars.
if let Some(cs) = tr.cat_sizes(self.zoom) {
head(cv, &mut y, "CATEGORIES");
let mut cats: Vec<(Category, i64)> =
cs.iter().enumerate().filter(|(_, &v)| v > 0).map(|(i, &v)| (Category::from_u8(i as u8), v)).collect();
let total: i64 = cats.iter().map(|c| c.1).sum();
cats.sort_by(|a, b| b.1.cmp(&a.1));
for &(c, v) in &cats {
if y >= end - 8 {
break;
}
let col = t.cat[c as usize];
let sw = if t.mono || t.ascii { " " } else { "██ " };
cv.text(x, y, sw, 3, Style::new(col, t.panel_bg));
cv.text(x + 3, y, c.name(), w - 3, plain);
cv.text_right(x, y, w, &textutil::percent(v, total), Style::new(t.muted, t.panel_bg));
y += 1;
self.paint_bar(cv, x + 3, y, w - 3, v as f64 / cats[0].1 as f64, col, false);
y += 1;
}
y += 1;
}
// Selected item.
if y < end - 4 {
head(cv, &mut y, "SELECTED");
let mut desc = Vec::new();
if is_group(self.sel) {
if let Some(g) = self.group_info(self.sel) {
desc.push(format!("{} smaller items", textutil::count(g.ids().len() as i64)));
desc.push(textutil::size(g.size));
}
} else {
let id = self.selected_node(tr);
if id != NO_NODE {
let n = tr.node(id);
desc.extend(wrap(&san(&n.name), w));
desc.push(textutil::size(self.size_of(tr, id)) + " · " + &textutil::percent(self.size_of(tr, id), self.size_of(tr, self.zoom)));
if n.is_dir() {
desc.push(textutil::count(n.files as i64) + " files");
} else {
desc.push(kind_label(n));
}
}
}
for d in desc {
if y < end {
cv.text(x, y, &d, w, plain);
y += 1;
}
}
}
}
}
rust/src/tui/table.rs
+190
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@@ -0,0 +1,190 @@
//! A scrollable list with a cursor, shared by the list-style views.
use super::canvas::{rgb, Canvas, Color, Style, BOLD};
use super::model::{Cmd, Hit, HitAct, Model};
use super::{pad_left, trunc, trunc_left};
use crate::inventory::Tree;
use crate::textutil;
use crate::treemap::Rect;
/// Describes one table column.
pub(crate) struct Column {
pub title: &'static str,
pub width: i32, // 0 = flexible (takes the remaining space)
pub right: bool,
pub clip_left: bool, // truncate from the left (paths: the tail matters)
}
pub(crate) const fn col(title: &'static str, width: i32, right: bool, clip_left: bool) -> Column {
Column { title, width, right, clip_left }
}
/// One rendered row: cell strings plus optional per-cell styles.
#[derive(Default)]
pub(crate) struct TableRow {
pub cells: Vec<String>,
pub styles: Vec<Option<Style>>, // None = default
pub bar: f64, // 0..1 for an optional bar column (-1 = none)
pub bar_col: Color,
}
#[derive(Default)]
pub(crate) struct Table {
pub cursor: i32,
pub offset: i32,
pub height: i32, // rows visible in the last paint
}
impl Table {
/// Moves the cursor three rows for a mouse wheel step.
pub fn scroll(&mut self, up: bool, n: usize) {
self.mv(if up { -3 } else { 3 }, n);
}
fn mv(&mut self, d: i32, n: usize) {
if n == 0 {
self.cursor = 0;
return;
}
self.cursor = (self.cursor + d).max(0).min(n as i32 - 1);
}
/// Handles navigation keys common to all tables.
pub fn key(&mut self, k: &str, n: usize) -> bool {
let page = (self.height - 1).max(1);
match k {
"up" | "k" => self.mv(-1, n),
"down" | "j" => self.mv(1, n),
"pgup" | "ctrl+b" => self.mv(-page, n),
"pgdown" | "ctrl+f" => self.mv(page, n),
"end" | "G" => self.mv(n as i32, n),
"g" => self.cursor = 0,
_ => return false,
}
true
}
/// The cursor as an index (it is never negative).
pub fn at(&self) -> usize {
self.cursor.max(0) as usize
}
pub fn paint(&mut self, m: &mut Model, cv: &mut Canvas, r: Rect, cols: &[Column], rows: &[TableRow], title: &str) {
let t = m.theme.clone();
cv.fill(r, " ", t.base());
if r.h < 3 {
return;
}
let mut y = r.y;
if !title.is_empty() {
cv.text(r.x + 1, y, title, r.w - 2, Style::new(t.accent, t.bg).with(BOLD));
y += 1;
}
// Resolve flexible width.
let fixed: i32 = cols.iter().map(|c| c.width + 1).sum();
let flex = (r.w - 2 - fixed).max(8);
let width = |c: &Column| if c.width == 0 { flex } else { c.width };
let mut x = r.x + 1;
let hdr = Style::new(t.muted, t.bg).with(BOLD);
for c in cols {
let w = width(c);
let s = if c.right { pad_left(c.title, w) } else { c.title.to_string() };
cv.text(x, y, &s, w, hdr);
x += w + 1;
}
y += 1;
cv.hline(r.x + 1, y, r.w - 2, "─", Style::new(t.faint, t.bg));
y += 1;
self.height = r.y + r.h - y;
let n = rows.len() as i32;
if self.cursor >= n {
self.cursor = (n - 1).max(0);
}
if self.cursor < self.offset {
self.offset = self.cursor;
}
if self.cursor >= self.offset + self.height {
self.offset = self.cursor - self.height + 1;
}
self.offset = 0.max(self.offset.min(n - self.height));
let mut i = self.offset;
while i < n && y < r.y + r.h {
let row = &rows[i as usize];
let sel = i == self.cursor;
let mut base = t.base();
if sel {
base = Style::new(t.text_on(t.sel), t.sel).with(BOLD | m.mono_rev());
cv.fill(Rect { x: r.x, y, w: r.w, h: 1 }, " ", base);
}
let mut x = r.x + 1;
for (ci, c) in cols.iter().enumerate() {
let w = width(c);
let s = row.cells.get(ci).map_or("", |s| s.as_str());
let st = match row.styles.get(ci) {
Some(Some(st)) if !sel => *st,
_ => base,
};
if c.title.is_empty() && row.bar >= 0.0 {
m.paint_bar(cv, x, y, w, row.bar, row.bar_col, sel);
} else if c.right {
cv.text(x, y, &pad_left(s, w), w, st);
} else if c.clip_left {
cv.text(x, y, &trunc_left(s, w), w, st);
} else {
cv.text(x, y, &trunc(s, w), w, st);
}
x += w + 1;
}
m.hits.push(Hit { r: Rect { x: r.x, y, w: r.w, h: 1 }, act: HitAct::Row(i as usize) });
y += 1;
i += 1;
}
if rows.is_empty() {
cv.text_centered(r.x, r.y + r.h / 2, r.w, "Nothing to show", t.muted());
}
if n > self.height && self.height > 0 {
let pos = format!("{}/{}", textutil::count(self.cursor as i64 + 1), textutil::count(n as i64));
cv.text_right(r.x, r.y, r.w - 1, &pos, t.muted());
}
}
}
impl Model {
/// Draws a proportional bar with eighth-block precision.
#[allow(clippy::too_many_arguments)]
pub fn paint_bar(&self, cv: &mut Canvas, x: i32, y: i32, w: i32, frac: f64, col: Color, sel: bool) {
let t = &self.theme;
let col = if col.is_default() { t.accent } else { col };
let bg = if sel { t.sel.mix(rgb(0, 0, 0), 0.25) } else { t.bg.mix(t.fg, 0.08) };
let mut eighths = (frac * (w * 8) as f64 + 0.5) as i64;
const PARTS: [&str; 8] = ["", "▏", "▎", "▍", "▌", "▋", "▊", "▉"];
for i in 0..w {
let mut ch = if eighths >= 8 {
"█"
} else if eighths > 0 {
PARTS[eighths as usize]
} else {
" "
};
if t.ascii {
ch = if eighths >= 4 { "#" } else { " " };
}
eighths -= 8;
let st = if t.mono { Style::default() } else { Style::new(col, bg) };
cv.text(x + i, y, ch, 1, st);
}
}
/// Lets mouse actions reuse key handling (lock already held).
pub fn handle_key_name(&mut self, tr: &Tree, k: &str) -> Cmd {
let (handled, cmd) = self.view_key(tr, k);
if handled {
return cmd;
}
match k {
"enter" => self.inspect_selection(tr),
"space" => self.zoom_into_selection(tr),
_ => Cmd::None,
}
}
}
rust/src/tui/tests.rs
+513
View File
@@ -0,0 +1,513 @@
//! Headless model tests (ports of tui_test.go, nest_test.go, live_test.go).
use super::bench::opts_for;
use super::color256::{quant16, quant256};
use super::canvas::rgb;
use super::mapview::TOP_MIN_AREA;
use super::model::*;
use super::modals::new_info_modal;
use crate::cancel::Cancel;
use crate::inventory::{category_for, ext, Kind, NodeId, Tree, FLAG_SCANNED};
use crate::scan;
use crate::textutil;
use crate::treemap::Block;
use std::os::unix::ffi::OsStrExt;
use std::sync::{Arc, RwLock};
use std::time::{Duration, Instant};
const HOSTILE: &[u8] = b"evil\x1b]0;pwned\x07\x1b[2J.iso";
fn add_file(t: &mut Tree, p: NodeId, name: &[u8], size: i64) -> NodeId {
let id = t.add(p, name, Kind::File);
let n = t.node_mut(id);
(n.size, n.alloc) = (size, size);
n.cat = category_for(&ext(name), false, false);
id
}
fn add_dir(t: &mut Tree, p: NodeId, name: &[u8]) -> NodeId {
let id = t.add(p, name, Kind::Dir);
t.node_mut(id).flags |= FLAG_SCANNED;
id
}
fn test_tree() -> Tree {
let mut t = Tree::new(b"/srv", Kind::Dir);
let file = |t: &mut Tree, p, name: &[u8], size| {
let id = add_file(t, p, name, size);
t.node_mut(id).mtime = 1_700_000_000_000_000_000;
};
let backups = add_dir(&mut t, 0, b"backups");
for i in 0..40i64 {
file(&mut t, backups, format!("dump-{i:02}.tar.gz").as_bytes(), (1 + i) << 30);
}
let vms = add_dir(&mut t, 0, b"vms");
file(&mut t, vms, b"ubuntu.qcow2", 86 << 30);
file(&mut t, vms, b"win.vmdk", 40 << 30);
let media = add_dir(&mut t, 0, b"media");
let photos = add_dir(&mut t, media, "photos 日本語".as_bytes());
for i in 0..300i64 {
file(&mut t, photos, format!("img{i:03}.jpg").as_bytes(), (i + 1) << 20);
}
file(&mut t, media, HOSTILE, 9 << 30);
file(&mut t, media, "👨‍👩‍👧 family.mp4".as_bytes(), 12 << 30);
let tiny = add_dir(&mut t, 0, b"tiny");
for i in 0..2000 {
file(&mut t, tiny, format!("f{i}").as_bytes(), 100);
}
file(&mut t, 0, b"README", 10);
t.recompute();
t.stats.complete = true;
t
}
fn model_for(t: Tree) -> Model {
let tr = Arc::new(RwLock::new(t));
let mut m = Model::new(opts_for(tr.clone()), None, tr, Cancel::new());
m.profile = Profile::TrueColor;
m
}
fn new_test_model() -> Model {
model_for(test_tree())
}
fn send(m: &mut Model, msgs: Vec<Msg>) {
for msg in msgs {
m.update(msg);
}
}
fn key(s: &str) -> Msg {
Msg::Key(Key::from_name(s))
}
fn size(w: i32, h: i32) -> Msg {
Msg::Size(w, h)
}
/// Removes CSI sequences.
fn strip(s: &str) -> String {
let mut out = String::with_capacity(s.len());
let mut it = s.chars();
while let Some(c) = it.next() {
if c == '\x1b' && it.clone().next() == Some('[') {
it.next();
for c in it.by_ref() {
if ('\x40'..='\x7e').contains(&c) {
break;
}
}
continue;
}
out.push(c);
}
out
}
/// Verifies the rendered frame exactly fills w×h cells and that no filename
/// control sequence leaked through.
fn check_frame(m: &mut Model, w: i32, h: i32) -> String {
let content = m.view().to_string();
assert!(
!content.contains("\x1b]") && !content.contains('\x07') && !content.contains("\x1b[2J"),
"terminal control sequence from a filename leaked into the frame"
);
let lines: Vec<&str> = content.split('\n').collect();
assert_eq!(lines.len() as i32, h, "{w}x{h}: frame has {} lines", lines.len());
for (i, l) in lines.iter().enumerate() {
let got = textutil::width(&strip(l)) as i32;
assert_eq!(got, w, "{w}x{h}: line {i} has width {got}: {:?}", strip(l));
}
strip(&content)
}
fn find(m: &Model, name: &[u8]) -> NodeId {
let t = m.tree.read().unwrap();
let mut found = None;
t.walk(0, |id, n| {
if &*n.name == name {
found = Some(id);
}
true
});
found.expect("node not found")
}
fn find_block(bs: &[Block], id: i64) -> Block {
bs.iter().copied().find(|b| b.id == id).unwrap_or(Block { id: 0, rect: Default::default() })
}
#[test]
fn resize_transitions_preserve_state() {
let mut m = new_test_model();
send(&mut m, vec![size(120, 40)]);
check_frame(&mut m, 120, 40);
// Zoom into media and select something that is not the default.
let media = find(&m, b"media");
(m.sel, m.user_sel) = (media as i64, true);
send(&mut m, vec![key("space")]);
assert_eq!(m.zoom, media);
check_frame(&mut m, 120, 40);
send(&mut m, vec![key("right")]);
let sel = m.sel;
for (w, h) in [(80, 24), (120, 40), (300, 80), (70, 20), (180, 50), (40, 10), (39, 9), (200, 60)] {
send(&mut m, vec![size(w, h)]);
check_frame(&mut m, w, h);
assert_eq!(m.zoom, media, "{w}x{h}: zoom lost");
assert!(m.sel == sel || is_group(m.sel), "{w}x{h}: selection changed from {sel} to {}", m.sel);
}
// The layout must be recomputed for the new geometry, not stretched.
let l = m.tm.clone().unwrap();
assert!(l.rect.w <= 200 && l.rect.h <= 60, "layout not recomputed for final size: {:?}", l.rect);
let r = l.rect;
for b in &l.blocks {
let br = b.rect;
assert!(br.x >= r.x && br.y >= r.y && br.x + br.w <= r.x + r.w && br.y + br.h <= r.y + r.h, "block {b:?} outside treemap {r:?}");
}
}
#[test]
fn resize_storm() {
let mut m = new_test_model();
let mut rnd = 1u64;
let mut intn = |n: u64| {
rnd = rnd.wrapping_mul(6364136223846793005).wrapping_add(1442695040888963407);
(rnd >> 33) % n
};
send(&mut m, vec![size(120, 40)]);
m.view();
send(&mut m, vec![key("right"), key("down")]);
let sel = m.sel;
for i in 0..300 {
let (w, h) = (20 + intn(300) as i32, 5 + intn(90) as i32);
send(&mut m, vec![size(w, h)]);
if i % 7 == 0 {
m.view(); // renders interleave with resizes like the real event loop
}
}
send(&mut m, vec![size(150, 45)]);
check_frame(&mut m, 150, 45);
assert_eq!(m.sel, sel, "selection lost in resize storm");
}
#[test]
fn modal_survives_resize() {
let mut m = new_test_model();
send(&mut m, vec![size(120, 40), key("enter")]);
assert_eq!(m.modals.len(), 1, "Enter should open the info modal");
for (w, h) in [(120, 40), (60, 14), (41, 10), (300, 80), (45, 12)] {
send(&mut m, vec![size(w, h)]);
let out = check_frame(&mut m, w, h);
assert!(out.contains("ITEM INFORMATION"), "{w}x{h}: modal title missing:\n{out}");
let f = &m.modals[0];
assert!(f.view_h >= 1 && f.view_h <= h, "{w}x{h}: modal viewport {}", f.view_h);
}
// Scrolling in a tiny terminal must stay in range.
send(&mut m, vec![size(45, 12)]);
for _ in 0..100 {
send(&mut m, vec![key("down")]);
}
check_frame(&mut m, 45, 12);
let f = &m.modals[0];
assert!(f.scroll >= 0 && f.scroll <= f.content_n, "scroll out of range: {} of {}", f.scroll, f.content_n);
send(&mut m, vec![key("esc")]);
assert!(m.modals.is_empty(), "Esc should close the modal");
}
#[test]
fn spatial_navigation_uses_geometry() {
let mut m = new_test_model();
send(&mut m, vec![size(160, 45)]);
m.view();
let blocks = m.tm.clone().unwrap().blocks.clone();
for dir in ["right", "down", "left", "up"] {
let before = m.sel;
send(&mut m, vec![key(dir)]);
m.view();
if m.sel == before {
continue; // edge of the map
}
let (a, b) = (find_block(&blocks, before).rect, find_block(&blocks, m.sel).rect);
let ok = match dir {
"right" => b.x >= a.x + a.w,
"left" => b.x + b.w <= a.x,
"down" => b.y >= a.y + a.h,
_ => b.y + b.h <= a.y,
};
assert!(ok, "{dir} moved to a block that is not in that direction: {a:?} -> {b:?}");
}
}
#[test]
fn zoom_breadcrumbs_and_home() {
let mut m = new_test_model();
send(&mut m, vec![size(100, 30)]);
let media = find(&m, b"media");
let photos = find(&m, "photos 日本語".as_bytes());
(m.sel, m.user_sel) = (media as i64, true);
send(&mut m, vec![key("space")]);
m.sel = photos as i64;
send(&mut m, vec![key("space")]);
assert_eq!(m.zoom, photos, "did not zoom into photos");
let out = check_frame(&mut m, 100, 30);
assert!(out.contains("media › photos 日本語"), "breadcrumbs missing:\n{out}");
// Narrow terminal: breadcrumbs truncate from the left, keeping the tail.
send(&mut m, vec![size(42, 12)]);
let out = check_frame(&mut m, 42, 12);
assert!(out.contains("photos"), "breadcrumb tail missing:\n{out}");
send(&mut m, vec![key("backspace")]);
assert!(m.zoom == media && m.sel == photos as i64, "backspace: zoom {} sel {}", m.zoom, m.sel);
send(&mut m, vec![key("home")]);
assert_eq!(m.zoom, 0, "home did not return to root");
}
#[test]
fn filter_transforms_map() {
let mut m = new_test_model();
send(&mut m, vec![size(120, 40), key("/")]);
for c in "ext = gz".chars() {
send(&mut m, vec![Msg::Key(Key { name: c.to_string(), text: c.to_string(), ctrl_alt: false })]);
}
assert!(m.search.err.is_empty() && m.search.query.is_some(), "query not parsed: {:?}", m.search.err);
let msgs = m.apply_filter().run_sync();
send(&mut m, msgs);
send(&mut m, vec![key("enter")]);
assert!(m.search.result.is_some(), "no filter result");
let out = check_frame(&mut m, 120, 40);
assert!(!out.contains("vms/") && out.contains("backups/"), "filter not applied to the map:\n{out}");
assert!(out.contains("FILTER"), "filter indicator missing");
send(&mut m, vec![key("esc")]);
assert!(m.search.query.is_none() && m.search.result.is_none(), "Esc should clear the filter");
let out = check_frame(&mut m, 120, 40);
assert!(out.contains("vms/"), "map not restored after clearing filter:\n{out}");
}
#[test]
fn hostile_name_sanitised_in_modal() {
let mut m = new_test_model();
send(&mut m, vec![size(120, 40)]);
let id = find(&m, HOSTILE);
let t = m.tree.clone();
let md = new_info_modal(&m, &t.read().unwrap(), id);
m.open_modal(md);
let out = check_frame(&mut m, 120, 40);
assert!(out.contains(r"\x1b]0;pwned\x07"), "escaped name not shown:\n{out}");
}
#[test]
fn views_render_at_many_sizes() {
let mut m = new_test_model();
for _ in 0..m.views.len() {
for (w, h) in [(40, 10), (80, 24), (150, 45), (91, 22)] {
send(&mut m, vec![size(w, h)]);
check_frame(&mut m, w, h);
send(&mut m, vec![key("down"), key("down")]);
check_frame(&mut m, w, h);
}
send(&mut m, vec![key("tab")]);
}
send(&mut m, vec![key("?")]);
send(&mut m, vec![size(60, 15)]);
check_frame(&mut m, 60, 15);
}
#[test]
fn level_of_detail_groups_tiny_files() {
let mut m = new_test_model();
send(&mut m, vec![size(100, 30)]);
let tiny = find(&m, b"tiny");
let t = m.tree.clone();
m.zoom_to(&t.read().unwrap(), tiny);
m.view();
let l = m.tm.clone().unwrap();
assert!(l.blocks.len() as i32 <= 100 * 30 / TOP_MIN_AREA + 1, "{} blocks for 2000 equal files: LOD not applied", l.blocks.len());
assert!(l.groups.contains_key(&group_id(tiny)), "expected a group block for small items");
}
#[test]
fn ctrl_c_quits_when_idle() {
let mut m = new_test_model();
send(&mut m, vec![size(80, 24)]);
m.update(Msg::Key(Key { name: "ctrl+c".into(), text: String::new(), ctrl_alt: true }));
assert!(m.quit, "Ctrl+C should quit when no scan runs");
}
#[test]
fn mouse() {
let mut m = new_test_model();
send(&mut m, vec![size(120, 40)]);
m.view();
// Click the centre of a block other than the selected one.
let target = {
let t = m.tree.read().unwrap();
m.tm.as_ref().unwrap().blocks.iter().copied()
.find(|b| b.id != m.sel && b.id >= 0 && t.node(b.id as NodeId).is_dir() && b.rect.w > 4)
.unwrap()
};
let click = || Msg::Click { x: target.rect.x + target.rect.w / 2, y: target.rect.y + target.rect.h / 2, button: Button::Left };
send(&mut m, vec![click()]);
assert_eq!(m.sel, target.id, "click selected the wrong block");
m.view();
send(&mut m, vec![click()]); // second click within the double-click window
assert_eq!(m.zoom as i64, target.id, "double click should zoom");
m.view();
send(&mut m, vec![Msg::Wheel { x: 50, y: 20, up: false }]);
assert_eq!(m.zoom, 0, "wheel down should zoom out");
// A modal swallows clicks; clicking outside closes it.
send(&mut m, vec![key("?")]);
m.view();
send(&mut m, vec![Msg::Click { x: 0, y: 39, button: Button::Left }]);
assert!(m.modals.is_empty(), "click outside modal should close it");
}
#[test]
fn quantizers() {
assert_eq!(quant16(rgb(10, 12, 8)), 0, "near-black should map to black");
let n = quant16(rgb(0xe0, 0x6c, 0x75));
assert!(n == 1 || n == 9, "red-ish mapped to {n}");
let n = quant256(rgb(40, 48, 30));
assert!(n >= 16, "256 quantizer used palette-dependent index {n}");
// A dark, slightly tinted shade must land on the grey ramp or a dark
// cube entry, not a saturated one like olive (58) or navy (17).
assert!(![58, 17, 22].contains(&n), "dark tint mapped to saturated {n}");
}
#[test]
fn colour_depths_render_same_geometry() {
for p in [Profile::TrueColor, Profile::Ansi256, Profile::Ansi, Profile::Ascii] {
let mut m = new_test_model();
m.profile = p;
send(&mut m, vec![size(100, 30)]);
check_frame(&mut m, 100, 30);
}
}
// A filename with a newline would run commands when pasted into a shell.
#[test]
fn copy_refuses_control_characters() {
let mut m = new_test_model();
m.copy_path(b"/srv/x\ncurl evil | sh\n");
assert!(m.toast.starts_with("Not copied"), "hostile path copied: {:?}", m.toast);
m.copy_path(&[b"/srv/media/".as_slice(), HOSTILE].concat());
assert!(m.toast.starts_with("Not copied"), "escape sequence copied: {:?}", m.toast);
m.copy_path("/srv/photos 日本語/img001.jpg".as_bytes());
assert!(m.toast.starts_with("Copied"), "plain path refused: {:?}", m.toast);
}
// ---- nest_test.go -----------------------------------------------------------
fn root_tree() -> Tree {
let mut t = Tree::new(b"/", Kind::Dir);
let mnt = add_dir(&mut t, 0, b"mnt");
let raid = add_dir(&mut t, mnt, b"raid");
let media = add_dir(&mut t, raid, b"media");
for show in ["X-Files", "Simpsons", "Frasier"] {
let s = add_dir(&mut t, media, show.as_bytes());
for i in 1..=5 {
let se = add_dir(&mut t, s, format!("S{i:02}").as_bytes());
for e in 1..=20i64 {
add_file(&mut t, se, format!("E{e:02}.mkv").as_bytes(), e << 28);
}
}
}
let usr = add_dir(&mut t, 0, b"usr");
let lib = add_dir(&mut t, usr, b"lib");
for i in 0..50i64 {
add_file(&mut t, lib, format!("lib{i}.so").as_bytes(), (i + 1) << 22);
}
let v = add_dir(&mut t, 0, b"var");
let log = add_dir(&mut t, v, b"log");
add_file(&mut t, log, b"syslog", 2 << 30);
t.recompute();
t.stats.complete = true;
t
}
// A single-child chain (mnt → raid → media) must not use up the nesting
// budget: the map at / should reach the seasons and their episodes.
#[test]
fn nesting_reaches_deep_media() {
let mut m = model_for(root_tree());
send(&mut m, vec![size(160, 45)]);
let out = strip(m.view());
assert!(out.contains("mnt/raid/media/") && out.contains("S01/"), "chain or seasons missing:\n{out}");
let t = m.tree.read().unwrap();
let files = m.tm.as_ref().unwrap().nested.iter().filter(|nb| nb.id >= 0 && !t.node(nb.id as NodeId).is_dir()).count();
assert!(files >= 50, "only {files} episode blocks drawn");
}
// Headless, o shows the selected folder in the map instead of launching a
// file manager.
#[test]
fn reveal_headless_zooms_map() {
std::env::set_var("DISPLAY", "");
std::env::set_var("WAYLAND_DISPLAY", "");
let mut m = model_for(root_tree());
send(&mut m, vec![size(160, 45)]);
let mnt = {
let t = m.tree.clone();
let g = t.read().unwrap();
m.kids_of(&g, m.zoom).ids[0]
};
m.snapshot = false; // reveal is refused for snapshots
(m.sel, m.user_sel) = (mnt as i64, true);
send(&mut m, vec![key("o")]);
assert_eq!(m.zoom, mnt, "zoom = {}, want mnt", m.tree.read().unwrap().path_string(m.zoom));
}
// ---- live_test.go -----------------------------------------------------------
/// Renders, navigates, filters and resizes while the scanner mutates the
/// inventory, verifying the locking discipline.
#[test]
fn live_scan_rendering() {
let root = scan::tests::TempDir::new("tui-live");
for i in 0..30 {
let d = root.0.join(format!("d{i:02}")).join("sub");
std::fs::create_dir_all(&d).unwrap();
for j in 0..40 {
std::fs::write(d.join(format!("f{j}.log")), vec![0u8; (i + 1) * (j + 1) * 100]).unwrap();
}
}
let path = root.0.as_os_str().as_bytes().to_vec();
let start: StartFn = Arc::new(move |c: Cancel| {
let s = scan::start(&path, scan::Options { workers: 4, chunk_size: 3, ..Default::default() }, c)?;
let t = s.tree.clone();
Ok((Some(s), t))
});
let cancel = Cancel::new();
let (s, tr) = start(cancel.clone()).unwrap();
let mut opts = opts_for(tr.clone());
opts.start = start;
let mut m = Model::new(opts, s, tr, cancel.clone());
let sizes = [(120, 40), (80, 24), (200, 60), (45, 12)];
let deadline = Instant::now() + Duration::from_secs(20);
let mut i = 0;
loop {
let (w, h) = sizes[i % sizes.len()];
send(&mut m, vec![size(w, h), Msg::Tick]);
send(&mut m, vec![key(["right", "down", "left", "up"][i % 4])]);
if i % 5 == 0 {
send(&mut m, vec![key("tab")]);
}
if i == 3 {
m.search.ed.set("ext = log");
let _ = m.query_changed();
let msgs = m.apply_filter().run_sync();
send(&mut m, msgs);
}
m.dirty = true;
m.view();
if m.scanner.as_ref().unwrap().is_done() {
let t = m.tree.clone();
send(&mut m, vec![Msg::ScanDone(t)]);
m.view();
assert!(!m.scanning, "scan should be finished");
break;
}
assert!(Instant::now() < deadline, "scan did not finish");
i += 1;
}
cancel.cancel();
}
rust/src/tui/theme.rs
+193
View File
@@ -0,0 +1,193 @@
//! Colour themes. Nothing else in the TUI hard-codes colours.
use super::canvas::{rgb, BoxChars, Color, Style, BOX_ASCII, BOX_ASCII_SEL, BOX_DOUBLE, BOX_LIGHT};
use crate::config::Settings;
use crate::inventory::{parse_category, NUM_CATEGORIES};
use std::collections::HashMap;
/// Every colour the UI uses.
#[derive(Clone, Default)]
pub(crate) struct Theme {
pub name: &'static str,
pub mono: bool, // no colour: rely on attributes and glyphs
pub ascii: bool, // no box-drawing glyphs
pub bg: Color,
pub fg: Color,
pub muted: Color,
pub faint: Color,
pub accent: Color,
pub sel: Color,
pub header_bg: Color,
pub header_fg: Color,
pub status_bg: Color,
pub status_fg: Color,
pub panel_bg: Color,
pub warn: Color,
pub err: Color,
pub ok: Color,
pub group: Color,
pub empty_dir: Color,
pub cat: [Color; NUM_CATEGORIES],
pub diff_grow: Color,
pub diff_shrink: Color,
pub diff_new: Color,
pub diff_same: Color,
pub ext: Option<HashMap<String, Color>>,
}
/// Lists built-in themes (sorted).
pub(crate) fn theme_names() -> Vec<&'static str> {
vec!["dark", "default", "high-contrast", "mono"]
}
fn default_theme() -> Theme {
Theme {
name: "default",
bg: rgb(0x16, 0x18, 0x1d),
fg: rgb(0xdc, 0xdf, 0xe4),
muted: rgb(0x8a, 0x91, 0x9c),
faint: rgb(0x4a, 0x50, 0x5a),
accent: rgb(0x61, 0xaf, 0xef),
sel: rgb(0xff, 0xd8, 0x66),
header_bg: rgb(0x21, 0x25, 0x2b),
header_fg: rgb(0xdc, 0xdf, 0xe4),
status_bg: rgb(0x2c, 0x31, 0x3a),
status_fg: rgb(0xc8, 0xcc, 0xd4),
panel_bg: rgb(0x1c, 0x1f, 0x25),
warn: rgb(0xe5, 0xc0, 0x7b),
err: rgb(0xe0, 0x6c, 0x75),
ok: rgb(0x98, 0xc3, 0x79),
group: rgb(0x5c, 0x63, 0x70),
empty_dir: rgb(0x4b, 0x52, 0x63),
// Other, Image, Video, Audio, Archive, DiskImage, Database, Code,
// Document, Executable, Log, Cache
cat: [
rgb(0x7f, 0x8c, 0x9d),
rgb(0xe5, 0xc0, 0x7b),
rgb(0xe0, 0x6c, 0x75),
rgb(0xd1, 0x9a, 0x66),
rgb(0xc6, 0x78, 0xdd),
rgb(0x8e, 0x7c, 0xf0),
rgb(0x56, 0xb6, 0xc2),
rgb(0x98, 0xc3, 0x79),
rgb(0x61, 0xaf, 0xef),
rgb(0xbe, 0x50, 0x46),
rgb(0xa3, 0xa8, 0x6a),
rgb(0x6b, 0x77, 0x88),
],
diff_grow: rgb(0xf0, 0x5a, 0x5a),
diff_shrink: rgb(0x5a, 0xd0, 0x7a),
diff_new: rgb(0x4f, 0xa8, 0xff),
diff_same: rgb(0x50, 0x56, 0x60),
..Theme::default()
}
}
fn dark_theme() -> Theme {
let mut t = default_theme();
t.name = "dark";
(t.bg, t.panel_bg) = (rgb(0, 0, 0), rgb(0x0c, 0x0c, 0x0e));
(t.header_bg, t.status_bg) = (rgb(0x12, 0x12, 0x16), rgb(0x1a, 0x1a, 0x20));
for c in t.cat.iter_mut() {
*c = c.mix(rgb(0, 0, 0), 0.2);
}
t
}
fn high_contrast_theme() -> Theme {
let mut t = default_theme();
t.name = "high-contrast";
(t.bg, t.fg, t.muted) = (rgb(0, 0, 0), rgb(0xff, 0xff, 0xff), rgb(0xd0, 0xd0, 0xd0));
(t.header_bg, t.status_bg, t.panel_bg) = (rgb(0, 0, 0), rgb(0x20, 0x20, 0x20), rgb(0, 0, 0));
(t.sel, t.accent) = (rgb(0xff, 0xff, 0x00), rgb(0x00, 0xff, 0xff));
t.cat = [
rgb(0xb0, 0xb0, 0xb0),
rgb(0xff, 0xd7, 0x00),
rgb(0xff, 0x30, 0x30),
rgb(0xff, 0x8c, 0x00),
rgb(0xff, 0x00, 0xff),
rgb(0x9b, 0x7b, 0xff),
rgb(0x00, 0xe5, 0xff),
rgb(0x00, 0xff, 0x00),
rgb(0x40, 0x9c, 0xff),
rgb(0xff, 0x55, 0x55),
rgb(0xc8, 0xff, 0x00),
rgb(0x90, 0x90, 0xa0),
];
t
}
fn mono_theme() -> Theme {
Theme { name: "mono", mono: true, ..Theme::default() }
}
/// Returns a built-in theme with user overrides applied.
pub(crate) fn load_theme(name: &str, s: &Settings) -> Theme {
let mut t = match name.to_lowercase().as_str() {
"dark" => dark_theme(),
"high-contrast" => high_contrast_theme(),
"mono" => mono_theme(),
_ => default_theme(),
};
if t.mono {
return t;
}
for (k, v) in &s.category_colors {
if let (Some(c), Some(col)) = (parse_category(k), Color::hex(v)) {
t.cat[c as usize] = col;
}
}
for (k, v) in &s.extension_colors {
if let Some(col) = Color::hex(v) {
let key = k.strip_prefix('.').unwrap_or(k).to_lowercase();
t.ext.get_or_insert_with(HashMap::new).insert(key, col);
}
}
t
}
impl Theme {
pub fn base(&self) -> Style {
Style::new(self.fg, self.bg)
}
pub fn muted(&self) -> Style {
Style::new(self.muted, self.bg)
}
pub fn header(&self) -> Style {
Style::new(self.header_fg, self.header_bg)
}
pub fn status(&self) -> Style {
Style::new(self.status_fg, self.status_bg)
}
pub fn panel(&self) -> Style {
Style::new(self.fg, self.panel_bg)
}
pub fn box_chars(&self) -> BoxChars {
if self.ascii {
BOX_ASCII
} else {
BOX_LIGHT
}
}
pub fn sel_box(&self) -> BoxChars {
if self.ascii {
BOX_ASCII_SEL
} else {
BOX_DOUBLE
}
}
/// Picks a readable text colour for a background.
pub fn text_on(&self, bg: Color) -> Color {
if bg.is_default() {
return self.fg;
}
if bg.luma() > 0.55 {
return rgb(0x10, 0x12, 0x16);
}
rgb(0xf2, 0xf4, 0xf7)
}
}
rust/src/tui/views.rs
+535
View File
@@ -0,0 +1,535 @@
//! The Tab-cycled main views and their dispatch.
use super::actions::DupView;
use super::canvas::{Canvas, Color, Style, BOLD};
use super::infoview::InfoView;
use super::mapview::{map_key, map_paint, map_wheel};
use super::model::{Cmd, Model};
use super::modals::new_info_modal;
use super::table::{col, Table, TableRow};
use super::{fmt_date, san};
use crate::inventory::{ExtStat, Kind, NodeId, SizeMode, TopK, Tree, FLAG_DELETED, FLAG_HARDLINKED, FLAG_HARDLINK_DUP, FLAG_SPARSE, NO_NODE};
use crate::snapshot::{Change, Status};
use crate::textutil;
use crate::treemap::Rect;
use std::collections::HashMap;
use std::rc::Rc;
/// One of the Tab-cycled main views. Taken is a placeholder while a view
/// is borrowed out of the model to run one of its methods.
pub(crate) enum View {
Map,
List(ListView),
Ext(ExtView),
Top(TopView),
Info(InfoView),
Changes(ChangesView),
Dups(DupView),
Taken,
}
impl View {
pub fn name(&self) -> &'static str {
match self {
View::Map => "Map",
View::List(_) => "List",
View::Ext(_) => "Types",
View::Top(_) => "Top",
View::Info(_) => "Scan",
View::Changes(_) => "Changes",
View::Dups(_) => "Dups",
View::Taken => "",
}
}
pub fn table_mut(&mut self) -> Option<&mut Table> {
match self {
View::List(v) => Some(&mut v.tb),
View::Ext(v) => Some(&mut v.tb),
View::Top(v) => Some(&mut v.tb),
View::Info(v) => Some(&mut v.tb),
View::Changes(v) => Some(&mut v.tb),
View::Dups(v) => Some(&mut v.tb),
View::Map | View::Taken => None,
}
}
}
impl Model {
/// Runs f on the current view, temporarily moved out of the model.
fn with_view<R>(&mut self, f: impl FnOnce(&mut View, &mut Model) -> R) -> R {
let i = self.view;
let mut v = std::mem::replace(&mut self.views[i], View::Taken);
let r = f(&mut v, self);
self.views[i] = v;
r
}
pub fn paint_view(&mut self, tr: &Tree, cv: &mut Canvas, r: Rect) {
self.with_view(|v, m| match v {
View::Map => map_paint(m, tr, cv, r),
View::List(v) => v.paint(m, tr, cv, r),
View::Ext(v) => v.paint(m, tr, cv, r),
View::Top(v) => v.paint(m, tr, cv, r),
View::Info(v) => v.paint(m, tr, cv, r),
View::Changes(v) => v.paint(m, tr, cv, r),
View::Dups(v) => v.paint(m, tr, cv, r),
View::Taken => {}
})
}
pub fn view_key(&mut self, tr: &Tree, k: &str) -> (bool, Cmd) {
self.with_view(|v, m| match v {
View::Map => map_key(m, k),
View::List(v) => v.key(m, tr, k),
View::Ext(v) => v.key(m, tr, k),
View::Top(v) => v.key(m, tr, k),
View::Info(v) => v.key(m, tr, k),
View::Changes(v) => v.key(m, tr, k),
View::Dups(v) => v.key(m, tr, k),
View::Taken => (false, Cmd::None),
})
}
pub fn view_wheel(&mut self, tr: &Tree, up: bool) -> Cmd {
self.with_view(|v, m| {
match v {
View::Map => return map_wheel(m, tr, up),
View::List(v) => v.wheel(m, tr, up),
View::Ext(v) => {
let n = v.stats(m, tr).len();
v.tb.scroll(up, n)
}
View::Top(v) => v.tb.scroll(up, v.ids.len()),
View::Info(v) => v.tb.scroll(up, tr.stats.errors.len()),
View::Changes(v) => v.tb.scroll(up, v.rows.as_ref().map_or(0, |r| r.len())),
View::Dups(v) => v.tb.scroll(up, v.rows.len()),
View::Taken => {}
}
Cmd::None
})
}
pub fn set_view_by_name(&mut self, n: &str) {
for i in 0..self.views.len() {
if self.views[i].name() == n {
self.set_view(i);
}
}
}
}
// ---- Directory list -------------------------------------------------------
#[derive(Default)]
pub(crate) struct ListView {
tb: Table,
last_sel: i64,
}
impl ListView {
/// Reconciles the table cursor with the shared selection: if the
/// selection changed elsewhere (treemap, jump) the cursor follows it;
/// otherwise the cursor (moved by keys or clicks) drives the selection.
fn sync(&mut self, m: &mut Model, tr: &Tree) {
let k = m.kids_of(tr, m.zoom);
if m.sel != self.last_sel {
for (i, &id) in k.ids.iter().enumerate() {
if id as i64 == m.sel {
self.tb.cursor = i as i32;
}
}
} else if self.tb.at() < k.ids.len() {
m.sel = k.ids[self.tb.at()] as i64;
}
self.last_sel = m.sel;
}
fn paint(&mut self, m: &mut Model, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = m.theme.clone();
let k = m.kids_of(tr, m.zoom);
self.sync(m, tr);
let total = m.size_of(tr, m.zoom);
let mut rows: Vec<TableRow> = Vec::with_capacity(k.ids.len());
for (i, &id) in k.ids.iter().enumerate() {
let n = tr.node(id);
let mut name = san(&n.name);
let mut files = String::new();
if n.is_dir() {
name.push('/');
files = textutil::count(n.files as i64);
}
let modified = if n.mtime > 0 { fmt_date(n.mtime) } else { String::new() };
let c = m.color_of(tr, id as i64);
let mut name_st = Style::new(c.mix(t.fg, 0.45), t.bg);
if n.is_dir() {
name_st.attr = BOLD;
}
let frac = if k.sizes[0] > 0 { k.sizes[i] as f64 / k.sizes[0] as f64 } else { 0.0 };
let muted = Some(Style::new(t.muted, t.bg));
let mut row = TableRow {
cells: vec![textutil::size(k.sizes[i]), textutil::percent(k.sizes[i], total), String::new(), files, modified, name],
styles: vec![None, muted, None, muted, muted, Some(name_st)],
bar: frac,
bar_col: c,
};
if let Some(d) = &m.opts.diff {
row.cells[4] = textutil::signed_size(d.delta(tr, id, m.size_mode));
}
rows.push(row);
}
let mut cols = vec![col("SIZE", 10, true, false), col("%", 5, true, false), col("", 12, false, false),
col("FILES", 10, true, false), col("MODIFIED", 10, false, false), col("NAME", 0, false, false)];
if m.opts.diff.is_some() {
cols[4] = col("CHANGE", 12, true, false);
}
if r.w < 70 {
cols = vec![col("SIZE", 10, true, false), col("%", 5, true, false), col("NAME", 0, false, false)];
for row in rows.iter_mut() {
row.cells = vec![std::mem::take(&mut row.cells[0]), std::mem::take(&mut row.cells[1]), std::mem::take(&mut row.cells[5])];
row.styles = vec![None, row.styles[1], row.styles[5]];
}
}
self.tb.paint(m, cv, r, &cols, &rows, "");
self.sync(m, tr);
}
fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd) {
self.sync(m, tr);
let n = m.kids_of(tr, m.zoom).ids.len();
let handled = self.tb.key(k, n);
self.sync(m, tr);
(handled, Cmd::None)
}
fn wheel(&mut self, m: &mut Model, tr: &Tree, up: bool) {
self.sync(m, tr);
let n = m.kids_of(tr, m.zoom).ids.len();
self.tb.scroll(up, n);
self.sync(m, tr);
}
}
// ---- Extension statistics ------------------------------------------------
#[derive(Default)]
pub(crate) struct ExtView {
tb: Table,
cache: Option<Rc<Vec<ExtStat>>>,
cache_key: (NodeId, u64),
}
fn pick(m: &Model, s: &ExtStat) -> i64 {
if m.size_mode == SizeMode::Logical {
s.size
} else {
s.alloc
}
}
impl ExtView {
fn stats(&mut self, m: &Model, tr: &Tree) -> Rc<Vec<ExtStat>> {
let k = (m.zoom, m.data_ver * 2 + m.size_mode as u64);
if self.cache.is_none() || self.cache_key != k {
let mut v = tr.ext_stats(m.zoom);
v.sort_by(|a, b| pick(m, b).cmp(&pick(m, a)).then_with(|| a.ext.cmp(&b.ext)));
self.cache = Some(Rc::new(v));
self.cache_key = k;
}
self.cache.clone().unwrap()
}
fn paint(&mut self, m: &mut Model, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = m.theme.clone();
let st = self.stats(m, tr);
let total: i64 = st.iter().map(|s| pick(m, s)).sum();
let v0 = st.first().map_or(0, |s| pick(m, s));
let rows: Vec<TableRow> = st
.iter()
.map(|s| {
let ext = if s.ext.is_empty() { "(none)".to_string() } else { format!(".{}", s.ext) };
let c = t.ext.as_ref().and_then(|e| e.get(&s.ext)).copied().unwrap_or(t.cat[s.cat as usize]);
let frac = if v0 > 0 { pick(m, s) as f64 / v0 as f64 } else { 0.0 };
TableRow {
cells: vec![textutil::sanitize(&ext), s.cat.name().into(), textutil::count(s.count), textutil::size(pick(m, s)),
textutil::percent(pick(m, s), total), String::new()],
styles: vec![Some(Style::new(c, t.bg).with(BOLD)), Some(Style::new(t.muted, t.bg)), None, None,
Some(Style::new(t.muted, t.bg)), None],
bar: frac,
bar_col: c,
}
})
.collect();
let cols = [col("EXTENSION", 14, false, false), col("CATEGORY", 12, false, false), col("FILES", 11, true, false),
col("SIZE", 10, true, false), col("%", 5, true, false), col("", 0, false, false)];
let title = format!("File types under {} — Enter filters the map by extension", san(&tr.node(m.zoom).name));
self.tb.paint(m, cv, r, &cols, &rows, &title);
}
fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd) {
let st = self.stats(m, tr);
if self.tb.key(k, st.len()) {
return (true, Cmd::None);
}
if (k == "enter" || k == "space") && self.tb.at() < st.len() {
let e = &st[self.tb.at()].ext;
let q = if e.is_empty() { "type = file AND ext = \"\"".to_string() } else { format!("ext = \"{e}\"") };
m.set_view_by_name("Map");
return (true, m.set_filter(&q));
}
(false, Cmd::None)
}
}
// ---- Top-N investigation views --------------------------------------------
#[derive(Clone, Copy, PartialEq, Eq, Default)]
enum TopMode {
#[default]
Files,
Dirs,
Old,
New,
Count,
Sparse,
Hardlinks,
}
const TOP_MODES: [TopMode; 7] = [TopMode::Files, TopMode::Dirs, TopMode::Old, TopMode::New, TopMode::Count, TopMode::Sparse, TopMode::Hardlinks];
const TOP_NAMES: [&str; 7] = ["Largest files", "Largest directories (own files)", "Oldest large files", "Newest large files",
"Most files", "Sparse files", "Hard-linked files"];
const TOP_LIMIT: usize = 500;
#[derive(Default)]
pub(crate) struct TopView {
tb: Table,
mode: TopMode,
ids: Vec<NodeId>,
vals: Vec<i64>,
computed: bool,
cache_key: (NodeId, u64, u8),
}
impl TopView {
fn compute(&mut self, m: &Model, tr: &Tree) {
let k = (m.zoom, m.data_ver * 2 + m.size_mode as u64, self.mode as u8);
if self.computed && self.cache_key == k {
return;
}
(self.cache_key, self.computed) = (k, true);
let is_file = |n: &crate::inventory::Node| n.kind == Kind::File && n.flags & (FLAG_HARDLINK_DUP | FLAG_DELETED) == 0;
let matches = |id: NodeId| m.search.result.as_ref().is_none_or(|r| r.size(id) > 0);
let mut tk = TopK::new(TOP_LIMIT);
let mut val: HashMap<NodeId, i64> = HashMap::new();
const LARGE_FILE: i64 = 1 << 20;
match self.mode {
TopMode::Dirs => {
let mut own: HashMap<NodeId, i64> = HashMap::new();
tr.walk(m.zoom, |id, n| {
if is_file(n) && matches(id) {
*own.entry(n.parent).or_default() += n.own(m.size_mode);
}
true
});
for (id, s) in own {
tk.offer(id, s);
val.insert(id, s);
}
}
TopMode::Count => tr.walk(m.zoom, |id, n| {
if n.is_dir() && matches(id) {
let c = tr.child_count(id) as i64;
tk.offer(id, c);
val.insert(id, c);
}
true
}),
mode => tr.walk(m.zoom, |id, n| {
if !is_file(n) || !matches(id) {
return true;
}
let sz = n.own(m.size_mode);
match mode {
TopMode::Files => {
tk.offer(id, sz);
val.insert(id, sz);
}
TopMode::Old | TopMode::New => {
if sz >= LARGE_FILE && n.mtime > 0 {
tk.offer(id, if mode == TopMode::Old { -n.mtime } else { n.mtime });
val.insert(id, sz);
}
}
TopMode::Sparse => {
if n.has(FLAG_SPARSE) {
tk.offer(id, n.size - n.alloc);
val.insert(id, n.size - n.alloc);
}
}
TopMode::Hardlinks => {
if n.has(FLAG_HARDLINKED) {
tk.offer(id, n.size);
val.insert(id, n.size);
}
}
_ => {}
}
true
}),
}
self.ids = tk.sorted();
self.vals = self.ids.iter().map(|id| val[id]).collect();
}
fn paint(&mut self, m: &mut Model, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = m.theme.clone();
self.compute(m, tr);
let first = self.vals.first().copied().unwrap_or(0);
let mut rows = Vec::with_capacity(self.ids.len());
for (i, &id) in self.ids.iter().enumerate() {
let n = tr.node(id);
let val = if self.mode == TopMode::Count { textutil::count(self.vals[i]) } else { textutil::size(self.vals[i]) };
let modified = if n.mtime > 0 { fmt_date(n.mtime) } else { String::new() };
let frac = if first > 0 && self.mode != TopMode::Old && self.mode != TopMode::New {
self.vals[i] as f64 / first as f64
} else {
0.0
};
let c = m.color_of(tr, id as i64);
rows.push(TableRow {
cells: vec![val, modified, String::new(), san(&tr.path_bytes(id))],
styles: vec![None, Some(Style::new(t.muted, t.bg)), None, Some(Style::new(c.mix(t.fg, 0.45), t.bg))],
bar: frac,
bar_col: c,
});
}
let mut title = format!("◂ {} ▸ (←/→ change list · Enter details · Space jump to it)", TOP_NAMES[self.mode as usize]);
if m.search.result.is_some() {
title += " · filtered";
}
let val_title = match self.mode {
TopMode::Count => "ENTRIES",
TopMode::Sparse => "SAVED",
_ => "SIZE",
};
let cols = [col(val_title, 10, true, false), col("MODIFIED", 10, false, false), col("", 10, false, false), col("PATH", 0, false, true)];
self.tb.paint(m, cv, r, &cols, &rows, &title);
}
fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd) {
self.compute(m, tr);
let n = TOP_MODES.len();
match k {
"left" | "h" => {
self.mode = TOP_MODES[(self.mode as usize + n - 1) % n];
self.tb.cursor = 0;
return (true, Cmd::None);
}
"right" | "l" => {
self.mode = TOP_MODES[(self.mode as usize + 1) % n];
self.tb.cursor = 0;
return (true, Cmd::None);
}
_ => {}
}
if self.tb.key(k, self.ids.len()) {
return (true, Cmd::None);
}
if self.tb.at() < self.ids.len() {
let id = self.ids[self.tb.at()];
match k {
"enter" => {
let md = new_info_modal(m, tr, id);
m.open_modal(md);
return (true, Cmd::None);
}
"space" => {
m.jump_to(tr, id);
return (true, Cmd::None);
}
"c" | "o" | "d" => m.sel = id as i64,
_ => {}
}
}
(false, Cmd::None)
}
}
// ---- Snapshot comparison -----------------------------------------------------
#[derive(Default)]
pub(crate) struct ChangesView {
tb: Table,
rows: Option<Vec<Change>>,
cache_key: Option<SizeMode>,
}
impl ChangesView {
fn paint(&mut self, m: &mut Model, tr: &Tree, cv: &mut Canvas, r: Rect) {
let t = m.theme.clone();
let Some(d) = &m.opts.diff else { return };
if self.rows.is_none() || self.cache_key != Some(m.size_mode) {
self.rows = Some(d.changes(tr, 1000, m.size_mode));
self.cache_key = Some(m.size_mode);
}
let changes = self.rows.as_ref().unwrap();
let max_abs = changes.iter().map(|c| c.delta.abs()).fold(1, i64::max);
let rows: Vec<TableRow> = changes
.iter()
.map(|c| {
let col = match c.status {
Status::Added => t.diff_new,
Status::Removed => t.muted,
Status::Grew => t.diff_grow,
Status::Shrank => t.diff_shrink,
Status::Unchanged => Color::default(),
};
TableRow {
cells: vec![textutil::signed_size(c.delta), c.status.name().into(), textutil::size(c.old), textutil::size(c.new),
String::new(), textutil::sanitize(&c.path)],
styles: vec![Some(Style::new(col, t.bg).with(BOLD)), Some(Style::new(col, t.bg)), Some(Style::new(t.muted, t.bg)), None, None, None],
bar: c.delta.abs() as f64 / max_abs as f64,
bar_col: col,
}
})
.collect();
let cols = [col("CHANGE", 13, true, false), col("STATUS", 9, false, false), col("OLD", 10, true, false),
col("NEW", 10, true, false), col("", 10, false, false), col("PATH", 0, false, true)];
let (ro, rn) = (d.old.node(0).total(m.size_mode), tr.node(0).total(m.size_mode));
let title = format!("Changes {} → {} ({})", textutil::size(ro), textutil::size(rn), textutil::signed_size(rn - ro));
self.tb.paint(m, cv, r, &cols, &rows, &title);
}
fn key(&mut self, m: &mut Model, tr: &Tree, k: &str) -> (bool, Cmd) {
let n = self.rows.as_ref().map_or(0, |r| r.len());
if self.tb.key(k, n) {
return (true, Cmd::None);
}
if self.tb.at() < n {
let c = &self.rows.as_ref().unwrap()[self.tb.at()];
if c.node == NO_NODE {
if k == "enter" || k == "space" {
let msg = format!("Removed since the old snapshot: {}", textutil::sanitize(&c.path));
return (true, m.info(msg));
}
return (false, Cmd::None);
}
let id = c.node;
match k {
"enter" => {
let md = new_info_modal(m, tr, id);
m.open_modal(md);
return (true, Cmd::None);
}
"space" => {
m.jump_to(tr, id);
return (true, Cmd::None);
}
_ => {}
}
}
(false, Cmd::None)
}
}