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version-helper: Also try parsing release date from Cargo.toml

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The `package.metadata.gstreamer.release_date` date string can be used to
specify the release date.

This is used if there's no git repository as a fallback before using the
mtime of the Cargo.toml. Using the mtime will fail when building a crate
packaged by cargo because cargo sets the mtimes to bogus values.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/440

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1350>
This commit is contained in:
Sebastian Dröge 2023-09-28 19:56:51 +03:00
parent 4a1a7864cf
commit d384999b0c
2 changed files with 40 additions and 4 deletions
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1
version-helper/Cargo.toml
View file

@ -14,3 +14,4 @@ rust-version = "1.64"
[dependencies]
chrono = { version = "0.4.23", default-features = false, features = ["std", "clock"] }
toml_edit = { version = "0.20", default-features = false }

43
version-helper/src/lib.rs
View file

@ -50,7 +50,12 @@ use std::{env, fs, path};
/// commit.
///
/// - If not, `COMMIT_ID` will be set to the string `RELEASE` and the
/// `BUILD_REL_DATE` variable will be set to the mtime of `Cargo.toml`.
/// `BUILD_REL_DATE` variable will be set to the `package.metadata.gstreamer.release_date` key of
/// `Cargo.toml`, if it exists.
///
/// - If not, `COMMIT_ID` will be set to the string `RELEASE` and the `BUILD_REL_DATE` variable
/// will be set to the mtime of `Cargo.toml`. Note that the crates created by `cargo package` and
/// `cargo publish` have bogus mtimes for all files and won't be used.
///
/// - If neither is possible, `COMMIT_ID` is set to the string `UNKNOWN` and `BUILD_REL_DATE` to the
/// current date.
@ -70,7 +75,9 @@ pub fn info() {
// If there is a git repository, extract the version information from there.
// Otherwise assume this is a release and use Cargo.toml mtime as date.
let (commit_id, commit_date) = git_info.unwrap_or_else(|| {
let date = cargo_mtime_date(crate_dir).unwrap_or_else(chrono::Utc::now);
let date = cargo_metadata_release_date(&crate_dir)
.or_else(|| cargo_mtime_date(&crate_dir))
.unwrap_or_else(chrono::Utc::now);
("RELEASE".into(), date.format("%Y-%m-%d").to_string())
});
@ -78,8 +85,36 @@ pub fn info() {
println!("cargo:rustc-env=BUILD_REL_DATE={commit_date}");
}
fn cargo_mtime_date(crate_dir: path::PathBuf) -> Option<chrono::DateTime<chrono::Utc>> {
let mut cargo_toml = crate_dir;
fn cargo_metadata_release_date(crate_dir: &path::Path) -> Option<chrono::DateTime<chrono::Utc>> {
use std::io::prelude::*;
let mut cargo_toml = path::PathBuf::from(crate_dir);
cargo_toml.push("Cargo.toml");
let mut file = fs::File::open(&cargo_toml).ok()?;
let mut contents = String::new();
file.read_to_string(&mut contents).ok()?;
let doc = contents.parse::<toml_edit::Document>().ok()?;
let release_date = doc
.get("package")
.and_then(|package| package.as_table_like())
.and_then(|package| package.get("metadata"))
.and_then(|metadata| metadata.as_table_like())
.and_then(|metadata| metadata.get("gstreamer"))
.and_then(|gstreamer| gstreamer.as_table_like())
.and_then(|gstreamer| gstreamer.get("release_date"))
.and_then(|release_date| release_date.as_str())?;
let release_date = release_date.parse::<chrono::NaiveDate>().ok()?;
Some(chrono::DateTime::from_naive_utc_and_offset(
release_date.and_hms_opt(0, 0, 0)?,
chrono::Utc,
))
}
fn cargo_mtime_date(crate_dir: &path::Path) -> Option<chrono::DateTime<chrono::Utc>> {
let mut cargo_toml = path::PathBuf::from(crate_dir);
cargo_toml.push("Cargo.toml");
let metadata = fs::metadata(&cargo_toml).ok()?;