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use std::{
fs::FileType,
path::{Path, PathBuf},
};
use anyhow::Result;
use xshell::rm_rf;
pub struct PreCacheCmd;
impl PreCacheCmd {
/// Cleans the `./target` dir after the build such that only
/// dependencies are cached on CI.
pub fn run(self) -> Result<()> {
let slow_tests_cookie = Path::new("./target/.slow_tests_cookie");
if !slow_tests_cookie.exists() {
panic!("slow tests were skipped on CI!")
}
rm_rf(slow_tests_cookie)?;
for path in read_dir("./target/debug", FileType::is_file)? {
// Can't delete yourself on windows :-(
if !path.ends_with("xtask.exe") {
rm_rf(&path)?
}
}
rm_rf("./target/.rustc_info.json")?;
let to_delete = read_dir("./crates", FileType::is_dir)?
.into_iter()
.map(|path| path.file_name().unwrap().to_string_lossy().replace('-', "_"))
.collect::<Vec<_>>();
for &dir in ["./target/debug/deps", "target/debug/.fingerprint"].iter() {
for path in read_dir(dir, |_file_type| true)? {
if path.ends_with("xtask.exe") {
continue;
}
let file_name = path.file_name().unwrap().to_string_lossy();
let (stem, _) = match rsplit_once(&file_name, '-') {
Some(it) => it,
None => {
rm_rf(path)?;
continue;
}
};
let stem = stem.replace('-', "_");
if to_delete.contains(&stem) {
rm_rf(path)?;
}
}
}
Ok(())
}
}
fn read_dir(path: impl AsRef<Path>, cond: impl Fn(&FileType) -> bool) -> Result<Vec<PathBuf>> {
read_dir_impl(path.as_ref(), &cond)
}
fn read_dir_impl(path: &Path, cond: &dyn Fn(&FileType) -> bool) -> Result<Vec<PathBuf>> {
let mut res = Vec::new();
for entry in path.read_dir()? {
let entry = entry?;
let file_type = entry.file_type()?;
if cond(&file_type) {
res.push(entry.path())
}
}
Ok(res)
}
fn rsplit_once(haystack: &str, delim: char) -> Option<(&str, &str)> {
let mut split = haystack.rsplitn(2, delim);
let suffix = split.next()?;
let prefix = split.next()?;
Some((prefix, suffix))
}
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