76 lines
2.5 KiB
Rust
76 lines
2.5 KiB
Rust
use cargo_metadata::{Message::CompilerArtifact, MetadataCommand};
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use std::env;
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use std::ffi::OsStr;
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use std::mem;
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use std::path::PathBuf;
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use std::process::Command;
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pub struct BuildInfo {
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cargo_target_dir: PathBuf,
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}
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impl BuildInfo {
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pub fn new() -> Self {
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let data = MetadataCommand::new().exec().unwrap();
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Self {
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cargo_target_dir: data.target_directory,
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}
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}
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pub fn host_lib(&self) -> PathBuf {
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if let Some(path) = option_env!("HOST_LIBS") {
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PathBuf::from(path)
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} else {
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self.cargo_target_dir.join(env!("PROFILE"))
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}
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}
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pub fn target_lib(&self) -> PathBuf {
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if let Some(path) = option_env!("TARGET_LIBS") {
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path.into()
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} else {
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let mut dir = self.cargo_target_dir.clone();
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if let Some(target) = env::var_os("CARGO_BUILD_TARGET") {
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dir.push(target);
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}
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dir.push(env!("PROFILE"));
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dir
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}
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}
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pub fn clippy_driver_path(&self) -> PathBuf {
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if let Some(path) = option_env!("CLIPPY_DRIVER_PATH") {
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PathBuf::from(path)
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} else {
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self.target_lib().join("clippy-driver")
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}
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}
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// When we'll want to use `extern crate ..` for a dependency that is used
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// both by the crate and the compiler itself, we can't simply pass -L flags
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// as we'll get a duplicate matching versions. Instead, disambiguate with
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// `--extern dep=path`.
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// See https://github.com/rust-lang/rust-clippy/issues/4015.
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pub fn third_party_crates() -> Vec<(&'static str, PathBuf)> {
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const THIRD_PARTY_CRATES: [&str; 3] = ["serde", "regex", "clippy_lints"];
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let cargo = env::var_os("CARGO");
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let cargo = cargo.as_deref().unwrap_or_else(|| OsStr::new("cargo"));
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let output = Command::new(cargo)
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.arg("build")
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.arg("--test=compile-test")
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.arg("--message-format=json")
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.output()
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.unwrap();
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let mut crates = Vec::with_capacity(THIRD_PARTY_CRATES.len());
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for message in cargo_metadata::parse_messages(output.stdout.as_slice()) {
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if let CompilerArtifact(mut artifact) = message.unwrap() {
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if let Some(&krate) = THIRD_PARTY_CRATES.iter().find(|&&krate| krate == artifact.target.name) {
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crates.push((krate, mem::take(&mut artifact.filenames[0])));
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}
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}
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}
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crates
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}
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}
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