| //! Runs rustfmt on the repository. |
| |
| use crate::Build; |
| use build_helper::t; |
| use ignore::WalkBuilder; |
| use std::path::Path; |
| use std::process::Command; |
| |
| fn rustfmt(src: &Path, rustfmt: &Path, path: &Path, check: bool) { |
| let mut cmd = Command::new(&rustfmt); |
| // 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(&src.canonicalize().unwrap()); |
| cmd.arg("--edition").arg("2018"); |
| 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"); |
| if !status.success() { |
| eprintln!( |
| "Running `{}` failed.\nIf you're running `tidy`, \ |
| try again with `--bless` flag. Or, you just want to format \ |
| code, run `./x.py fmt` instead.", |
| cmd_debug, |
| ); |
| std::process::exit(1); |
| } |
| } |
| |
| #[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 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 src = build.src.clone(); |
| let walker = WalkBuilder::new(&build.src).types(matcher).overrides(ignore_fmt).build_parallel(); |
| walker.run(|| { |
| let src = src.clone(); |
| let rustfmt_path = rustfmt_path.clone(); |
| Box::new(move |entry| { |
| let entry = t!(entry); |
| if entry.file_type().map_or(false, |t| t.is_file()) { |
| rustfmt(&src, &rustfmt_path, &entry.path(), check); |
| } |
| ignore::WalkState::Continue |
| }) |
| }); |
| } |