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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use std::env;
use std::fs::File;
use std::io::{Read, Write};
use std::path::Path;
fn main() {
let lockfile_path = Path::new(&env::var("CARGO_MANIFEST_DIR").unwrap())
.join("..")
.join("..")
.join("Cargo.lock");
let revision_file_path =
Path::new(&env::var_os("OUT_DIR").unwrap()).join("webrender_revision.rs");
let mut lockfile = String::new();
File::open(lockfile_path)
.expect("Cannot open lockfile")
.read_to_string(&mut lockfile)
.expect("Failed to read lockfile");
match toml::from_str::<toml::value::Table>(&lockfile) {
Ok(result) => {
let packages = result
.get("package")
.expect("Cargo lockfile should contain package list");
match *packages {
toml::Value::Array(ref arr) => {
let source = arr
.iter()
.find(|pkg| {
pkg.get("name").and_then(|name| name.as_str()).unwrap_or("") ==
"webrender"
})
.and_then(|pkg| pkg.get("source").and_then(|source| source.as_str()))
.unwrap_or("unknown");
let parsed: Vec<&str> = source.split('#').collect();
let revision = if parsed.len() > 1 { parsed[1] } else { source };
let mut revision_module_file = File::create(revision_file_path).unwrap();
write!(&mut revision_module_file, "\"{}\"", revision).unwrap();
},
_ => panic!("Cannot find package definitions in lockfile"),
}
},
Err(e) => panic!("{}", e),
}
}
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