1 use std::path::PathBuf;
2 use std::process::Command;
4 // represents an archive we download from crates.io
11 // represents the extracted sourcecode of a crate
20 fn new(version: &str, name: &str) -> Self {
22 version: version.into(),
26 fn download_and_extract(&self) -> Krate {
27 let extract_dir = PathBuf::from("target/crater/crates");
30 let krate_download_dir = PathBuf::from("target/crater/downloads");
33 "https://crates.io/api/v1/crates/{}/{}/download",
34 self.name, self.version
36 print!("Downloading {}, {}", self.name, self.version);
38 let krate_name = format!("{}-{}.crate", &self.name, &self.version);
39 let mut krate_dest = std::fs::File::create(krate_download_dir.join(krate_name)).unwrap();
40 let mut krate_req = ureq::get(&url).call().unwrap().into_reader();
41 std::io::copy(&mut krate_req, &mut krate_dest).unwrap();
44 let krate = krate_dest;
45 let tar = flate2::read::GzDecoder::new(krate);
46 let mut archiv = tar::Archive::new(tar);
47 let extracted_path = extract_dir.join(format!("{}-{}/", self.name, self.version));
48 archiv.unpack(&extracted_path).expect("Failed to extract!");
51 version: self.version.clone(),
52 name: self.name.clone(),
59 fn run_clippy_lints(&self) -> String {
68 .expect("Failed to build clippy!");
73 let cargo_clippy_path: PathBuf = PathBuf::from("target/debug/cargo-clippy");
74 let clippy_driver_path: PathBuf = PathBuf::from("target/debug/cargo-driver");
76 // crates we want to check:
77 let krates: Vec<KrateSource> = vec![KrateSource::new("cargo", "0.49.0"), KrateSource::new("regex", "1.4.2")];
80 // assert that clippy is found
82 cargo_clippy_path.is_file(),
83 "target/debug/cargo-clippy binary not found!"
86 clippy_driver_path.is_file(),
87 "target/debug/clippy-driver binary not found!"
90 // download and extract the crates, then run clippy on them and collect clippys warnings
91 let clippy_lint_results: Vec<String> = krates
93 .map(|krate| krate.download_and_extract())
94 .map(|krate| krate.run_clippy_lints())
95 .collect::<Vec<String>>();