50 lines
1.5 KiB
Rust
50 lines
1.5 KiB
Rust
|
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
|
||
|
|
// file at the top-level directory of this distribution and at
|
||
|
|
// http://rust-lang.org/COPYRIGHT.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
|
|
// option. This file may not be copied, modified, or distributed
|
||
|
|
// except according to those terms.
|
||
|
|
|
||
|
|
use std::env;
|
||
|
|
use std::fs::File;
|
||
|
|
use std::io::Write;
|
||
|
|
use std::path::PathBuf;
|
||
|
|
use std::process::Command;
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
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 (commit_hash(), commit_date()) {
|
||
|
|
(Some(hash), Some(date)) => format!(" ({} {})", hash.trim_right(), date),
|
||
|
|
_ => String::new(),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn commit_hash() -> Option<String> {
|
||
|
|
Command::new("git")
|
||
|
|
.args(&["rev-parse", "--short", "HEAD"])
|
||
|
|
.output()
|
||
|
|
.ok()
|
||
|
|
.and_then(|r| String::from_utf8(r.stdout).ok())
|
||
|
|
}
|
||
|
|
|
||
|
|
fn commit_date() -> Option<String> {
|
||
|
|
Command::new("git")
|
||
|
|
.args(&["log", "-1", "--date=short", "--pretty=format:%cd"])
|
||
|
|
.output()
|
||
|
|
.ok()
|
||
|
|
.and_then(|r| String::from_utf8(r.stdout).ok())
|
||
|
|
}
|