77 lines
2.7 KiB
Rust
77 lines
2.7 KiB
Rust
use std::process::Command;
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use std::env;
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fn main() {
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// This allow using #[cfg(sqlite)] instead of #[cfg(feature = "sqlite")], which helps when trying to add them through macros
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#[cfg(feature = "sqlite")]
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println!("cargo:rustc-cfg=sqlite");
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#[cfg(feature = "mysql")]
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println!("cargo:rustc-cfg=mysql");
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#[cfg(feature = "postgresql")]
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println!("cargo:rustc-cfg=postgresql");
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#[cfg(not(any(feature = "sqlite", feature = "mysql", feature = "postgresql")))]
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compile_error!("You need to enable one DB backend. To build with previous defaults do: cargo build --features sqlite");
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if let Ok(version) = env::var("BWRS_VERSION") {
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println!("cargo:rustc-env=BWRS_VERSION={}", version);
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println!("cargo:rustc-env=CARGO_PKG_VERSION={}", version);
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} else {
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read_git_info().ok();
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}
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}
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fn run(args: &[&str]) -> Result<String, std::io::Error> {
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let out = Command::new(args[0]).args(&args[1..]).output()?;
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if !out.status.success() {
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use std::io::{Error, ErrorKind};
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return Err(Error::new(ErrorKind::Other, "Command not successful"));
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}
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Ok(String::from_utf8(out.stdout).unwrap().trim().to_string())
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}
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/// This method reads info from Git, namely tags, branch, and revision
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fn read_git_info() -> Result<(), std::io::Error> {
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// The exact tag for the current commit, can be empty when
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// the current commit doesn't have an associated tag
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let exact_tag = run(&["git", "describe", "--abbrev=0", "--tags", "--exact-match"]).ok();
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if let Some(ref exact) = exact_tag {
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println!("cargo:rustc-env=GIT_EXACT_TAG={}", exact);
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}
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// The last available tag, equal to exact_tag when
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// the current commit is tagged
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let last_tag = run(&["git", "describe", "--abbrev=0", "--tags"])?;
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println!("cargo:rustc-env=GIT_LAST_TAG={}", last_tag);
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// The current branch name
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let branch = run(&["git", "rev-parse", "--abbrev-ref", "HEAD"])?;
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println!("cargo:rustc-env=GIT_BRANCH={}", branch);
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// The current git commit hash
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let rev = run(&["git", "rev-parse", "HEAD"])?;
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let rev_short = rev.get(..8).unwrap_or_default();
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println!("cargo:rustc-env=GIT_REV={}", rev_short);
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// Combined version
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let version = if let Some(exact) = exact_tag {
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exact
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} else if &branch != "master" {
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format!("{}-{} ({})", last_tag, rev_short, branch)
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} else {
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format!("{}-{}", last_tag, rev_short)
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};
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println!("cargo:rustc-env=BWRS_VERSION={}", version);
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println!("cargo:rustc-env=CARGO_PKG_VERSION={}", version);
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// To access these values, use:
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// env!("GIT_EXACT_TAG")
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// env!("GIT_LAST_TAG")
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// env!("GIT_BRANCH")
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// env!("GIT_REV")
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// env!("BWRS_VERSION")
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Ok(())
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}
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