Permalink
Fetching contributors…
Cannot retrieve contributors at this time
58 lines (48 sloc) 1.18 KB
use std::env;
use std::error::Error;
use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
use std::process::Command;
struct Some {}
impl<E> From<E> for Some
where
E: Error,
{
fn from(_: E) -> Some {
Some {}
}
}
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();
}
fn commit_info() -> String {
match (commit_hash(), commit_date()) {
(Ok(hash), Ok(date)) => format!(" ({} {})", hash.trim(), date.trim()),
_ => String::new(),
}
}
fn commit_hash() -> Result<String, Some> {
let output = Command::new("git")
.args(&["rev-parse", "--short", "HEAD"])
.output()?;
if output.status.success() {
Ok(String::from_utf8(output.stdout)?)
} else {
Err(Some {})
}
}
fn commit_date() -> Result<String, Some> {
let output = Command::new("git")
.args(&["log", "-1", "--date=short", "--pretty=format:%cd"])
.output()?;
if output.status.success() {
Ok(String::from_utf8(output.stdout)?)
} else {
Err(Some {})
}
}