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74 lines
2.4 KiB
Rust
74 lines
2.4 KiB
Rust
#[cfg(not(feature = "include-data"))]
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fn main() {}
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#[cfg(feature = "include-data")]
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fn main() {
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data_repo::init_repo();
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}
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#[cfg(feature = "include-data")]
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mod data_repo {
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use std::{env, fs, path::PathBuf};
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use cargo_toml::Manifest;
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use git2::{Oid, Repository};
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use serde::Deserialize;
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#[derive(Clone, Debug, Deserialize)]
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struct Metadata {
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minecraft_data_repo: String,
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minecraft_data_commit: String,
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}
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pub fn init_repo() {
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println!("cargo:rerun-if-env-changed=MINECRAFT_DATA_REPO_PATH");
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println!("cargo:rerun-if-changed=Cargo.toml");
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let manifest = Manifest::<Metadata>::from_path_with_metadata(PathBuf::from("Cargo.toml"))
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.expect("Failed to read manifest (Cargo.toml)");
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let metadata = manifest
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.package
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.expect("missing package info in Cargo.toml")
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.metadata
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.expect("missing package.metadata in Cargo.toml");
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let repo_path = env::var("MINECRAFT_DATA_REPO_PATH")
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.map(PathBuf::from)
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.ok()
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.or_else(|| dirs::cache_dir().map(|p| p.join("minecraft-data")))
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.unwrap_or_else(|| PathBuf::from("minecraft-data"));
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println!(
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"cargo:rustc-env=MINECRAFT_DATA_PATH_INTERNAL={}",
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repo_path.to_string_lossy()
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);
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let version_oid = Oid::from_str(&metadata.minecraft_data_commit).expect("invalid oid");
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let repo = if repo_path.exists() {
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let repo = Repository::open(&repo_path).expect("failed to open git repo");
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let head_oid = repo
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.head()
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.expect("no head found in repo")
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.peel_to_commit()
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.expect("head is not a commit")
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.as_object()
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.id();
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if head_oid != version_oid {
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fs::remove_dir_all(&repo_path).expect("could not delete repository");
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Repository::clone(&metadata.minecraft_data_repo, repo_path)
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.expect("failed to clone repo")
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} else {
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repo
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}
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} else {
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Repository::clone(&metadata.minecraft_data_repo, repo_path)
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.expect("failed to clone repo")
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};
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repo.set_head_detached(version_oid)
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.expect("failed set head");
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repo.checkout_head(None).expect("failed checkout index")
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}
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}
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