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use std::collections::hash_map::DefaultHasher;
use std::env;
use std::hash::Hasher;
use std::path::PathBuf;
use std::process::Command;
fn main() {
set_schema_version_env_var();
let rev = Command::new("git")
.arg("rev-parse")
.arg("HEAD")
.output()
.ok()
.map(|s| s.stdout)
.and_then(|s| String::from_utf8(s).ok());
if let Some(rev) = rev {
if rev.len() >= 9 {
println!("cargo:rustc-env=WBG_VERSION={}", &rev[..9]);
}
}
}
fn set_schema_version_env_var() {
let cargo_manifest_dir = env::var("CARGO_MANIFEST_DIR").expect(
"The `CARGO_MANIFEST_DIR` environment variable is needed to locate the schema file",
);
let schema_file = PathBuf::from(cargo_manifest_dir).join("src/lib.rs");
let schema_file = std::fs::read(schema_file).unwrap();
let mut hasher = DefaultHasher::new();
hasher.write(&schema_file);
println!("cargo:rustc-env=SCHEMA_FILE_HASH={}", hasher.finish());
}
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