mirror of
https://github.com/Llewellynvdm/exa.git
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f8df02dae7
I read through every file and applied a couple of rustfmt suggestions. The brace placement and alignment of items on similar lines has been made consistent, even if neither are rustfmt's default style (a file has been put in place to enforce this). Other changes are: • Alphabetical imports and modules • Comma placement at the end of match blocks • Use newlines and indentation judiciously • Spaces around associated types • Spaces after negations (it makes it more clear imho) • Comment formatting • Use early-returns and Optional `?` where appropriate
65 lines
1.8 KiB
Rust
65 lines
1.8 KiB
Rust
/// The version string isn’t the simplest: we want to show the version,
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/// current Git hash, and compilation date when building *debug* versions, but
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/// just the version for *release* versions so the builds are reproducible.
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///
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/// This script generates the string from the environment variables that Cargo
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/// adds (http://doc.crates.io/environment-variables.html) and runs `git` to
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/// get the SHA1 hash. It then writes the string into a file, which exa then
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/// includes at build-time.
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///
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/// - https://stackoverflow.com/q/43753491/3484614
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/// - https://crates.io/crates/vergen
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extern crate datetime;
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use std::env;
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use std::io::Result as IOResult;
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fn git_hash() -> String {
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use std::process::Command;
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String::from_utf8_lossy(
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&Command::new("git")
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.args(&["rev-parse", "--short", "HEAD"])
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.output().unwrap()
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.stdout).trim().to_string()
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}
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fn main() {
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write_statics().unwrap();
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}
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fn is_development_version() -> bool {
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// Both weekly releases and actual releases are --release releases,
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// but actual releases will have a proper version number
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cargo_version().ends_with("-pre") || env::var("PROFILE").unwrap() == "debug"
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}
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fn cargo_version() -> String {
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env::var("CARGO_PKG_VERSION").unwrap()
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}
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fn build_date() -> String {
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use datetime::{LocalDateTime, ISO};
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let now = LocalDateTime::now();
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format!("{}", now.date().iso())
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}
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fn write_statics() -> IOResult<()> {
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use std::fs::File;
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use std::io::Write;
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use std::path::PathBuf;
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let ver = if is_development_version() {
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format!("exa v{} ({} built on {})", cargo_version(), git_hash(), build_date())
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}
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else {
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format!("exa v{}", cargo_version())
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};
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let out = PathBuf::from(env::var("OUT_DIR").unwrap());
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let mut f = File::create(&out.join("version_string.txt"))?;
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write!(f, "{:?}", ver)
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}
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