74 lines
1.9 KiB
Rust
74 lines
1.9 KiB
Rust
//! Construct version in the `commit-hash date chanel` format
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use std::{env, path::PathBuf, process::Command};
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fn main() {
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set_rerun();
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println!("cargo:rustc-env=REV={}", rev());
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}
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fn set_rerun() {
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println!("cargo:rerun-if-env-changed=RUST_ANALYZER_REV");
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let mut manifest_dir = PathBuf::from(
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env::var("CARGO_MANIFEST_DIR").expect("`CARGO_MANIFEST_DIR` is always set by cargo."),
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);
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while manifest_dir.parent().is_some() {
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let head_ref = manifest_dir.join(".git/HEAD");
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if head_ref.exists() {
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println!("cargo:rerun-if-changed={}", head_ref.display());
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return;
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}
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manifest_dir.pop();
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}
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println!("cargo:warning=Could not find `.git/HEAD` from manifest dir!");
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}
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fn rev() -> String {
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if let Ok(rev) = env::var("RUST_ANALYZER_REV") {
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return rev;
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}
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if let Some(commit_hash) = commit_hash() {
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let mut buf = commit_hash;
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if let Some(date) = build_date() {
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buf.push(' ');
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buf.push_str(&date);
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}
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let channel = env::var("RUST_ANALYZER_CHANNEL").unwrap_or_else(|_| "dev".to_string());
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buf.push(' ');
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buf.push_str(&channel);
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return buf;
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}
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"???????".to_string()
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}
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fn commit_hash() -> Option<String> {
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exec("git rev-parse --short HEAD").ok()
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}
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fn build_date() -> Option<String> {
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exec("date -u +%Y-%m-%d").ok()
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}
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fn exec(command: &str) -> std::io::Result<String> {
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let args = command.split_ascii_whitespace().collect::<Vec<_>>();
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let output = Command::new(args[0]).args(&args[1..]).output()?;
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if !output.status.success() {
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return Err(std::io::Error::new(
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std::io::ErrorKind::InvalidData,
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format!("command {:?} returned non-zero code", command,),
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));
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}
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let stdout = String::from_utf8(output.stdout)
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.map_err(|err| std::io::Error::new(std::io::ErrorKind::InvalidData, err))?;
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Ok(stdout.trim().to_string())
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}
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