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minor: standard snippet

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This commit is contained in:
Aleksey Kladov 2021-05-07 21:46:25 +03:00
parent a8da2ca3a1
commit 189f785749
1 changed files with 13 additions and 6 deletions
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19
crates/rust-analyzer/build.rs
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@ -51,16 +51,23 @@ fn rev() -> String {
}
fn commit_hash() -> Option<String> {
output_to_string("git rev-parse --short HEAD")
exec("git rev-parse --short HEAD").ok()
}
fn build_date() -> Option<String> {
output_to_string("date -u +%Y-%m-%d")
exec("date -u +%Y-%m-%d").ok()
}
fn output_to_string(command: &str) -> Option<String> {
fn exec(command: &str) -> std::io::Result<String> {
let args = command.split_ascii_whitespace().collect::<Vec<_>>();
let output = Command::new(args[0]).args(&args[1..]).output().ok()?;
let stdout = String::from_utf8(output.stdout).ok()?;
Some(stdout.trim().to_string())
let output = Command::new(args[0]).args(&args[1..]).output()?;
if !output.status.success() {
return Err(std::io::Error::new(
std::io::ErrorKind::InvalidData,
format!("command {:?} returned non-zero code", command,),
));
}
let stdout = String::from_utf8(output.stdout)
.map_err(|err| std::io::Error::new(std::io::ErrorKind::InvalidData, err))?;
Ok(stdout.trim().to_string())
}