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use std::env;
use std::fs;
use std::io::Write;
use std::path::Path;
use std::process::{self, Command, Stdio};
pub(crate) fn cargo_command(
cargo: impl AsRef<Path>,
subcommand: &str,
triple: Option<&str>,
source_dir: &Path,
) -> Command {
let mut cmd = Command::new(cargo.as_ref());
cmd.arg(subcommand)
.arg("--manifest-path")
.arg(source_dir.join("Cargo.toml"))
.arg("--target-dir")
.arg(source_dir.join("target"));
if let Some(triple) = triple {
cmd.arg("--target").arg(triple);
}
cmd
}
pub(crate) fn hyperfine_command(
warmup: u64,
runs: u64,
prepare: Option<Command>,
a: Command,
b: Command,
) -> Command {
let mut bench = Command::new("hyperfine");
if warmup != 0 {
bench.arg("--warmup").arg(warmup.to_string());
}
if runs != 0 {
bench.arg("--runs").arg(runs.to_string());
}
if let Some(prepare) = prepare {
bench.arg("--prepare").arg(format!("{:?}", prepare));
}
bench.arg(format!("{:?}", a)).arg(format!("{:?}", b));
bench
}
#[track_caller]
pub(crate) fn try_hard_link(src: impl AsRef<Path>, dst: impl AsRef<Path>) {
let src = src.as_ref();
let dst = dst.as_ref();
if let Err(_) = fs::hard_link(src, dst) {
fs::copy(src, dst).unwrap(); // Fallback to copying if hardlinking failed
}
}
#[track_caller]
pub(crate) fn spawn_and_wait(mut cmd: Command) {
if !cmd.spawn().unwrap().wait().unwrap().success() {
process::exit(1);
}
}
#[track_caller]
pub(crate) fn spawn_and_wait_with_input(mut cmd: Command, input: String) -> String {
let mut child = cmd
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
.expect("Failed to spawn child process");
let mut stdin = child.stdin.take().expect("Failed to open stdin");
std::thread::spawn(move || {
stdin.write_all(input.as_bytes()).expect("Failed to write to stdin");
});
let output = child.wait_with_output().expect("Failed to read stdout");
if !output.status.success() {
process::exit(1);
}
String::from_utf8(output.stdout).unwrap()
}
pub(crate) fn copy_dir_recursively(from: &Path, to: &Path) {
for entry in fs::read_dir(from).unwrap() {
let entry = entry.unwrap();
let filename = entry.file_name();
if filename == "." || filename == ".." {
continue;
}
if entry.metadata().unwrap().is_dir() {
fs::create_dir(to.join(&filename)).unwrap();
copy_dir_recursively(&from.join(&filename), &to.join(&filename));
} else {
fs::copy(from.join(&filename), to.join(&filename)).unwrap();
}
}
}
pub(crate) fn is_ci() -> bool {
env::var("CI").as_ref().map(|val| &**val) == Ok("true")
}
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