89 lines
3.2 KiB
Rust
89 lines
3.2 KiB
Rust
//
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// Copyright 2021 Google, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at:
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use std::env;
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use std::path::{Path, PathBuf};
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use std::process::Command;
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fn main() {
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let packets_prebuilt = match env::var("HCI_PACKETS_PREBUILT") {
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Ok(dir) => PathBuf::from(dir),
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Err(_) => PathBuf::from("hci_packets.rs"),
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};
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if Path::new(packets_prebuilt.as_os_str()).exists() {
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let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
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let outputted = out_dir.join("../../hci/hci_packets.rs");
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std::fs::copy(
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packets_prebuilt.as_os_str().to_str().unwrap(),
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out_dir.join(outputted.file_name().unwrap()).as_os_str().to_str().unwrap(),
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)
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.unwrap();
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} else {
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generate_packets();
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}
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}
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fn generate_packets() {
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let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
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let gd_root = match env::var("PLATFORM_SUBDIR") {
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Ok(dir) => PathBuf::from(dir).join("bt/gd"),
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// Currently at //platform2/gd/rust/rust/packets
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Err(_) => PathBuf::from(env::current_dir().unwrap()).join("../..").canonicalize().unwrap(),
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};
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let input_files = [gd_root.join("hci/hci_packets.pdl")];
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let outputted = [out_dir.join("../../hci/hci_packets.rs")];
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// Find the packetgen tool. Expecting it at CARGO_HOME/bin
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let packetgen = match env::var("CARGO_HOME") {
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Ok(dir) => PathBuf::from(dir).join("bin").join("bluetooth_packetgen"),
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Err(_) => PathBuf::from("bluetooth_packetgen"),
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};
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if !Path::new(packetgen.as_os_str()).exists() {
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panic!(
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"Unable to locate bluetooth packet generator:{:?}",
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packetgen.as_os_str().to_str().unwrap()
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);
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}
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for i in 0..input_files.len() {
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println!("cargo:rerun-if-changed={}", input_files[i].display());
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let output = Command::new(packetgen.as_os_str().to_str().unwrap())
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.arg("--source_root=".to_owned() + gd_root.as_os_str().to_str().unwrap())
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.arg("--out=".to_owned() + out_dir.as_os_str().to_str().unwrap())
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.arg("--include=bt/gd")
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.arg("--rust")
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.arg(input_files[i].as_os_str().to_str().unwrap())
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.output()
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.unwrap();
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println!(
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"Status: {}, stdout: {}, stderr: {}",
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output.status,
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String::from_utf8_lossy(output.stdout.as_slice()),
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String::from_utf8_lossy(output.stderr.as_slice())
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);
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// File will be at ${OUT_DIR}/../../${input_files[i].strip('.pdl')}.rs
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std::fs::rename(
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outputted[i].as_os_str().to_str().unwrap(),
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out_dir.join(outputted[i].file_name().unwrap()).as_os_str().to_str().unwrap(),
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)
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.unwrap();
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}
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}
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