use std::env;
use std::fs::File;
use std::io::Write;
use std::path::Path;
use std::process::Command;
fn main() {
let out_dir = env::var("OUT_DIR").unwrap();
let dest_path = Path::new(&out_dir).join("version.rs");
let mut f = File::create(&dest_path).unwrap();
let git =
env::var("GIT").unwrap_or("git".into());
let description =
Command::new(git)
.arg("describe")
.arg("--dirty")
.arg("--tags")
.arg("--match")
.arg("v*")
.output();
let cargo_version = env!("CARGO_PKG_VERSION").to_owned();
let mut version =
match description {
Ok(output) => {
if output.status.success() {
format!("git-{}",
String::from_utf8(output.stdout).unwrap())
} else {
cargo_version
}
}
_ => cargo_version,
};
if let Some(l) = version.find('\n') {
version.truncate(l);
}
writeln!(f, "pub const VERSION: &'static str = \
\"{}\";", version).unwrap();
writeln!(f, "pub const VERSION_CSTR: &'static str = \
\"{}\\0\";", version).unwrap();
}