113 lines
3.0 KiB
Rust
113 lines
3.0 KiB
Rust
#![cfg_attr(feature = "deny-warnings", deny(warnings))]
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use rustc_tools_util::*;
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const CARGO_CLIPPY_HELP: &str = r#"Checks a package to catch common mistakes and improve your Rust code.
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Usage:
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cargo clippy [options] [--] [<opts>...]
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Common options:
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-h, --help Print this message
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-V, --version Print version info and exit
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Other options are the same as `cargo check`.
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To allow or deny a lint from the command line you can use `cargo clippy --`
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with:
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-W --warn OPT Set lint warnings
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-A --allow OPT Set lint allowed
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-D --deny OPT Set lint denied
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-F --forbid OPT Set lint forbidden
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You can use tool lints to allow or deny lints from your code, eg.:
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#[allow(clippy::needless_lifetimes)]
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"#;
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fn show_help() {
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println!("{}", CARGO_CLIPPY_HELP);
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}
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fn show_version() {
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let version_info = rustc_tools_util::get_version_info!();
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println!("{}", version_info);
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}
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pub fn main() {
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// Check for version and help flags even when invoked as 'cargo-clippy'
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if std::env::args().any(|a| a == "--help" || a == "-h") {
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show_help();
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return;
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}
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if std::env::args().any(|a| a == "--version" || a == "-V") {
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show_version();
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return;
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}
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if let Err(code) = process(std::env::args().skip(2)) {
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std::process::exit(code);
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}
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}
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fn process<I>(mut old_args: I) -> Result<(), i32>
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where
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I: Iterator<Item = String>,
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{
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let mut args = vec!["check".to_owned()];
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for arg in old_args.by_ref() {
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if arg == "--" {
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break;
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}
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args.push(arg);
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}
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let clippy_args: String = old_args.map(|arg| format!("{}__CLIPPY_HACKERY__", arg)).collect();
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let mut path = std::env::current_exe()
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.expect("current executable path invalid")
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.with_file_name("clippy-driver");
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if cfg!(windows) {
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path.set_extension("exe");
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}
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let target_dir = std::env::var_os("CLIPPY_DOGFOOD")
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.map(|_| {
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std::env::var_os("CARGO_MANIFEST_DIR").map_or_else(
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|| std::ffi::OsString::from("clippy_dogfood"),
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|d| {
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std::path::PathBuf::from(d)
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.join("target")
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.join("dogfood")
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.into_os_string()
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},
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)
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})
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.map(|p| ("CARGO_TARGET_DIR", p));
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// Run the dogfood tests directly on nightly cargo. This is required due
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// to a bug in rustup.rs when running cargo on custom toolchains. See issue #3118.
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if std::env::var_os("CLIPPY_DOGFOOD").is_some() && cfg!(windows) {
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args.insert(0, "+nightly".to_string());
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}
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let exit_status = std::process::Command::new("cargo")
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.args(&args)
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.env("RUSTC_WRAPPER", path)
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.env("CLIPPY_ARGS", clippy_args)
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.envs(target_dir)
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.spawn()
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.expect("could not run cargo")
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.wait()
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.expect("failed to wait for cargo?");
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if exit_status.success() {
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Ok(())
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} else {
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Err(exit_status.code().unwrap_or(-1))
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}
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}
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