mirror of
https://github.com/Llewellynvdm/exa.git
synced 2024-11-16 17:25:11 +00:00
63 lines
1.8 KiB
Rust
63 lines
1.8 KiB
Rust
/// The version string isn’t the simplest: we want to show the version,
|
||
/// current Git hash, and compilation date when building *debug* versions, but
|
||
/// just the version for *release* versions so the builds are reproducible.
|
||
///
|
||
/// This script generates the string from the environment variables that Cargo
|
||
/// adds (http://doc.crates.io/environment-variables.html) and runs `git` to
|
||
/// get the SHA1 hash. It then writes the string into a file, which exa then
|
||
/// includes at build-time.
|
||
///
|
||
/// - https://stackoverflow.com/q/43753491/3484614
|
||
/// - https://crates.io/crates/vergen
|
||
|
||
extern crate datetime;
|
||
use std::io::Result as IOResult;
|
||
use std::env;
|
||
|
||
fn git_hash() -> String {
|
||
use std::process::Command;
|
||
|
||
String::from_utf8_lossy(
|
||
&Command::new("git")
|
||
.args(&["rev-parse", "--short", "HEAD"])
|
||
.output().unwrap()
|
||
.stdout).trim().to_string()
|
||
}
|
||
|
||
fn main() {
|
||
write_statics().unwrap();
|
||
}
|
||
|
||
fn is_development_version() -> bool {
|
||
// Both weekly releases and actual releases are --release releases,
|
||
// but actual releases will have a proper version number
|
||
cargo_version().ends_with("-pre") || env::var("PROFILE").unwrap() == "debug"
|
||
}
|
||
|
||
fn cargo_version() -> String {
|
||
env::var("CARGO_PKG_VERSION").unwrap()
|
||
}
|
||
|
||
fn build_date() -> String {
|
||
use datetime::{LocalDateTime, ISO};
|
||
|
||
let now = LocalDateTime::now();
|
||
format!("{}", now.date().iso())
|
||
}
|
||
|
||
fn write_statics() -> IOResult<()> {
|
||
use std::fs::File;
|
||
use std::io::Write;
|
||
use std::path::PathBuf;
|
||
|
||
let ver = if is_development_version() {
|
||
format!("exa v{} ({} built on {})", cargo_version(), git_hash(), build_date())
|
||
} else {
|
||
format!("exa v{}", cargo_version())
|
||
};
|
||
|
||
let out = PathBuf::from(env::var("OUT_DIR").unwrap());
|
||
let mut f = File::create(&out.join("version_string.txt"))?;
|
||
write!(f, "{:?}", ver)
|
||
}
|