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//! Workspace tooling: `cargo xtask <command>`.
//!
//! Pure Rust (std + serde_json). External tools (`cargo`, `curl`, `tar`) are
//! invoked through `std::process::Command`.
mod ico;
mod layers;
mod psd_tools;
mod sha256;
mod stats;
mod version;
use std::path::{Path, PathBuf};
use std::process::{Command, ExitCode};
const USAGE: &str = "\
usage: cargo xtask <command>
commands:
layers enforce the crate dependency layering (plan/architecture.md §3)
wasm cargo check --target wasm32-unknown-unknown for the wasm-safe crates
ci fmt --check, clippy -D warnings, test, layers, wasm (stops at first failure)
corpus [--download] [--psd-tools [--update-manifest]]
show where test corpora live; --download fetches PngSuite into corpus/pngsuite;
--psd-tools fetches the psd-tools PSDs (MIT, pinned commit, sha256-verified)
into corpus/psd-tools
stats [--exact] count tests and lines per crate (--exact: ask the test harness via `-- --list`)
parity Photoshop menu parity; rewrites docs/parity.md
version [set X.Y.Z[-pre]]
print the workspace version, or set it (Cargo.toml + Cargo.lock)
ico <out.ico> <in.png>...
pack square PNGs (<= 256 px) into a Windows .ico (see packaging/icons.sh)
";
fn main() -> ExitCode {
let args: Vec<String> = std::env::args().skip(1).collect();
let rest: Vec<&str> = args.iter().skip(1).map(String::as_str).collect();
let result = match args.first().map(String::as_str) {
Some("layers") => cmd_layers(),
Some("wasm") => cmd_wasm(),
Some("ci") => cmd_ci(),
Some("corpus") if rest.contains(&"--psd-tools") => psd_tools::fetch(rest.contains(&"--update-manifest")),
Some("corpus") => cmd_corpus(rest.contains(&"--download")),
Some("stats") => stats::run(&root(), rest.contains(&"--exact")),
Some("parity") => cmd_parity(),
Some("version") => version::run(&root(), &rest),
Some("ico") => ico::run(&rest),
Some("-h" | "--help" | "help") | None => {
print!("{USAGE}");
Ok(())
}
Some(other) => Err(format!("unknown command `{other}`\n\n{USAGE}")),
};
match result {
Ok(()) => ExitCode::SUCCESS,
Err(e) => {
eprintln!("error: {e}");
ExitCode::FAILURE
}
}
}
/// Workspace root (parent of the xtask crate).
pub fn root() -> PathBuf {
Path::new(env!("CARGO_MANIFEST_DIR")).parent().expect("xtask has a parent dir").to_path_buf()
}
pub fn cargo() -> Command {
let mut c = Command::new(std::env::var("CARGO").unwrap_or_else(|_| "cargo".into()));
c.current_dir(root());
c
}
fn run(mut cmd: Command, what: &str) -> Result<(), String> {
eprintln!("$ {what}");
let status = cmd.status().map_err(|e| format!("{what}: failed to spawn: {e}"))?;
if status.success() { Ok(()) } else { Err(format!("{what}: exited with {status}")) }
}
pub fn metadata() -> Result<serde_json::Value, String> {
let out = cargo().args(["metadata", "--format-version", "1", "--no-deps"]).output().map_err(|e| format!("cargo metadata: {e}"))?;
if !out.status.success() {
return Err(format!("cargo metadata failed:\n{}", String::from_utf8_lossy(&out.stderr)));
}
serde_json::from_slice(&out.stdout).map_err(|e| format!("cargo metadata: bad JSON: {e}"))
}
fn cmd_layers() -> Result<(), String> {
let crates = layers::from_metadata(&metadata()?)?;
println!("Dependency layering (plan/architecture.md §3)\n");
println!("{:<28} {:<14} workspace deps", "crate", "layer");
for c in &crates {
let ws: Vec<String> = c
.deps
.iter()
.filter(|d| d.workspace)
.map(|d| {
let k = match d.kind {
layers::DepKind::Normal => "",
layers::DepKind::Dev => " (dev)",
layers::DepKind::Build => " (build)",
};
format!("{}{k}", layers::short_name(&d.name))
})
.collect();
println!("{:<28} {:<14} {}", c.name, layers::describe(layers::classify(&c.name)), ws.join(", "));
}
let violations = layers::check(&crates);
println!();
if violations.is_empty() {
println!("OK: {} crates, no layering violations.", crates.len());
Ok(())
} else {
println!("{} violation(s):", violations.len());
for v in &violations {
println!(" - {v}");
}
Err(format!("{} layering violation(s)", violations.len()))
}
}
/// Workspace packages that must build for wasm32: all L0–L5 crates plus
/// the egui shell.
fn wasm_set() -> Result<Vec<String>, String> {
let crates = layers::from_metadata(&metadata()?)?;
Ok(crates
.into_iter()
.filter(|c| match layers::classify(&c.name) {
Some(layers::Class::Layer(l)) => l <= 5 || layers::short_name(&c.name) == "ui-egui",
Some(layers::Class::Standalone) => true,
_ => false,
})
.map(|c| c.name)
.collect())
}
fn cmd_wasm() -> Result<(), String> {
let set = wasm_set()?;
let mut results = Vec::new();
for pkg in &set {
let mut c = cargo();
c.args(["check", "--target", "wasm32-unknown-unknown", "-p", pkg]);
let ok = run(c, &format!("cargo check --target wasm32-unknown-unknown -p {pkg}")).is_ok();
results.push((pkg.clone(), ok));
}
println!("\nwas
982B
m32-unknown-unknown check:");
for (p, ok) in &results {
println!(" {:<6} {p}", if *ok { "ok" } else { "FAIL" });
}
let failed = results.iter().filter(|r| !r.1).count();
if failed == 0 { Ok(()) } else { Err(format!("{failed} crate(s) failed the wasm check")) }
}
fn cmd_parity() -> Result<(), String> {
let mut c = cargo();
c.args(["run", "-q", "-p", "photocraft-ui-egui", "--example", "parity", "--", "--write", "docs/parity.md"]);
run(c, "cargo run -p photocraft-ui-egui --example parity")
}
fn cmd_ci() -> Result<(), String> {
type Step = (&'static str, Box<dyn Fn() -> Result<(), String>>);
let steps: Vec<Step> = vec![
(
"fmt",
Box::new(|| {
let mut c = cargo();
c.args(["fmt", "--all", "--", "--check"]);
run(c, "cargo fmt --all -- --check")
}),
),
(
"clippy",
Box::new(|| {
let mut c = cargo();
c.args(["clippy", "--workspace", "--all-targets", "--", "-D", "warnings"]);
run(c, "cargo clippy --workspace --all-targets -- -D warnings")
}),
),
(
"test",
Box::new(|| {
let mut c = cargo();
c.args(["test", "--workspace"]);
run(c, "cargo test --workspace")
}),
),
("layers", Box::new(cmd_layers)),
("wasm", Box::new(cmd_wasm)),
];
let mut done = Vec::new();
for (name, f) in &steps {
eprintln!("\n=== ci: {name} ===");
if let Err(e) = f() {
println!("\nCI summary:");
for d in &done {
println!(" ok {d}");
}
println!(" FAIL {name}: {e}");
for (n, _) in steps.iter().skip(done.len() + 1) {
println!(" skip {n}");
}
return Err(format!("ci failed at `{name}`"));
}
done.push(*name);
}
println!("\nCI summary: all {} steps passed ({})", done.len(), done.join(", "));
Ok(())
}
const PNGSUITE_URL: &str = "http://www.schaik.com/pngsuite/PngSuite-2017jul19.tgz";
fn cmd_corpus(download: bool) -> Result<(), String> {
let corpus = root().join("corpus");
println!(
"Test corpora live under {} (git-ignored, never committed).
Tests that use a corpus skip cleanly when it is absent.
corpus/pngsuite/ PngSuite (public domain) — photocraft-codecs compares every file
against the `image` crate. Fetch: cargo xtask corpus --download
corpus/psd/ PSD samples from MIT/BSD projects (ag-psd, psd-tools test data).
Copy files in manually; licences must be MIT/BSD/CC0.
corpus/psd-tools/ the full psd-tools test set (MIT) at a pinned commit, verified
against xtask/psd-tools-corpus.sha256. Fetch: cargo xtask corpus --psd-tools
Run: PHOTOCRAFT_PSDTOOLS_CORPUS=1 cargo test --release -p photocraft-io --test corpus
corpus/tiff/ libtiff pics (optional)
corpus/exr/ OpenEXR sample images (optional)
corpus/raw/ raw.pixls.us samples, CC0 (optional)
",
corpus.display()
);
if !download {
return Ok(());
}
let dest = corpus.join("pngsuite");
std::fs::create_dir_all(&dest).map_err(|e| format!("create {}: {e}", dest.display()))?;
let tgz = corpus.join("PngSuite-2017jul19.tgz");
let mut curl = Command::new("curl");
curl.args(["-fsSL", "-o"]).arg(&tgz).arg(PNGSUITE_URL);
run(curl, &format!("curl {PNGSUITE_URL}"))?;
let mut tar = Command::new("tar");
tar.arg("-xzf").arg(&tgz).arg("-C").arg(&dest);
run(tar, "tar -xzf PngSuite-2017jul19.tgz")?;
let _ = std::fs::remove_file(&tgz);
let n = std::fs::read_dir(&dest).map(|d| d.flatten().filter(|e| e.path().extension().is_some_and(|x| x == "png")).count()).unwrap_or(0);
println!("PngSuite: {n} PNG files in {}", dest.display());
if n == 0 { Err("no PNG files extracted".into()) } else { Ok(()) }
}