59 lines
1.7 KiB
Rust
59 lines
1.7 KiB
Rust
use std::env;
|
|
use std::fs::File;
|
|
use std::io::Write;
|
|
use std::path::{Path, PathBuf};
|
|
use std::process::Command;
|
|
|
|
fn main() {
|
|
// Only check .git/HEAD dirty status if it exists - doing so when
|
|
// building dependent crates may lead to false positives and rebuilds
|
|
if Path::new(".git/HEAD").exists() {
|
|
println!("cargo:rerun-if-changed=.git/HEAD");
|
|
}
|
|
|
|
println!("cargo:rerun-if-env-changed=CFG_RELEASE_CHANNEL");
|
|
|
|
let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
|
|
|
|
File::create(out_dir.join("commit-info.txt"))
|
|
.unwrap()
|
|
.write_all(commit_info().as_bytes())
|
|
.unwrap();
|
|
}
|
|
|
|
// Try to get hash and date of the last commit on a best effort basis. If anything goes wrong
|
|
// (git not installed or if this is not a git repository) just return an empty string.
|
|
fn commit_info() -> String {
|
|
match (channel(), commit_hash(), commit_date()) {
|
|
(channel, Some(hash), Some(date)) => format!("{} ({} {})", channel, hash, date),
|
|
_ => String::new(),
|
|
}
|
|
}
|
|
|
|
fn channel() -> String {
|
|
if let Ok(channel) = env::var("CFG_RELEASE_CHANNEL") {
|
|
channel
|
|
} else {
|
|
"nightly".to_owned()
|
|
}
|
|
}
|
|
|
|
fn commit_hash() -> Option<String> {
|
|
let output = Command::new("git")
|
|
.args(["rev-parse", "HEAD"])
|
|
.output()
|
|
.ok()?;
|
|
let mut stdout = output.status.success().then_some(output.stdout)?;
|
|
stdout.truncate(10);
|
|
String::from_utf8(stdout).ok()
|
|
}
|
|
|
|
fn commit_date() -> Option<String> {
|
|
let output = Command::new("git")
|
|
.args(["log", "-1", "--date=short", "--pretty=format:%cd"])
|
|
.output()
|
|
.ok()?;
|
|
let stdout = output.status.success().then_some(output.stdout)?;
|
|
String::from_utf8(stdout).ok()
|
|
}
|