1 // Copyright 2022, The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 use std::path::Path;
16 use std::process::Command;
17
main()18 fn main() {
19 let out_dir = std::env::var_os("OUT_DIR").unwrap();
20 let generated_file = "uci_packets.rs";
21 let dst_path = Path::new(&out_dir).join(generated_file);
22
23 if Path::new(generated_file).exists() {
24 // Copy the rust code directly if the file exists.
25 let result = std::fs::copy(generated_file, &dst_path);
26 eprintln!("{} exists, copy to {:?}: {:?}", generated_file, dst_path, result);
27 return;
28 }
29
30 // The binary should be compiled by `m pdlc` before calling cargo.
31 let output = Command::new("env")
32 .arg("pdlc")
33 .arg("--output-format")
34 .arg("rust")
35 .arg("uci_packets.pdl")
36 .output()
37 .unwrap();
38
39 std::fs::write(&dst_path, &output.stdout)
40 .expect(&format!("Could not write {}", dst_path.display()));
41
42 eprintln!(
43 "Status: {}, stdout: {}, stderr: {}",
44 output.status,
45 String::from_utf8_lossy(output.stdout.as_slice()),
46 String::from_utf8_lossy(output.stderr.as_slice())
47 );
48 }
49