rust/src/bootstrap/format.rs
Mark Rousskov b9e4174d8c Do not run if rustfmt.toml does not exist
distcheck (and generally publishing tarballs) will not package
rustfmt.toml and we for now still support running tidy etc in those
tarballs.
2019-12-22 07:44:09 -05:00

64 lines
2.1 KiB
Rust

//! Runs rustfmt on the repository.
use crate::Build;
use std::process::Command;
use ignore::WalkBuilder;
use std::path::Path;
use build_helper::t;
fn rustfmt(build: &Build, path: &Path, check: bool) {
let rustfmt_path = build.config.initial_rustfmt.as_ref().unwrap_or_else(|| {
eprintln!("./x.py fmt is not supported on this channel");
std::process::exit(1);
});
let mut cmd = Command::new(&rustfmt_path);
// avoid the submodule config paths from coming into play,
// we only allow a single global config for the workspace for now
cmd.arg("--config-path").arg(&build.src.canonicalize().unwrap());
cmd.arg("--unstable-features");
cmd.arg("--skip-children");
if check {
cmd.arg("--check");
}
cmd.arg(&path);
let cmd_debug = format!("{:?}", cmd);
let status = cmd.status().expect("executing rustfmt");
assert!(status.success(), "running {} successful", cmd_debug);
}
#[derive(serde::Deserialize)]
struct RustfmtConfig {
ignore: Vec<String>,
}
pub fn format(build: &Build, check: bool) {
let mut builder = ignore::types::TypesBuilder::new();
builder.add_defaults();
builder.select("rust");
let matcher = builder.build().unwrap();
let rustfmt_config = build.src.join("rustfmt.toml");
if !rustfmt_config.exists() {
eprintln!("Not running formatting checks; rustfmt.toml does not exist.");
eprintln!("This may happen in distributed tarballs.");
return;
}
let rustfmt_config = t!(std::fs::read_to_string(&rustfmt_config));
let rustfmt_config: RustfmtConfig = t!(toml::from_str(&rustfmt_config));
let mut ignore_fmt = ignore::overrides::OverrideBuilder::new(&build.src);
for ignore in rustfmt_config.ignore {
ignore_fmt.add(&format!("!{}", ignore)).expect(&ignore);
}
let ignore_fmt = ignore_fmt.build().unwrap();
let walker = WalkBuilder::new(&build.src)
.types(matcher)
.overrides(ignore_fmt)
.build();
for entry in walker {
let entry = t!(entry);
if entry.file_type().map_or(false, |t| t.is_file()) {
rustfmt(build, &entry.path(), check);
}
}
}