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use crate::cargo::Cargo; use crate::engine::Build; use crate::error::Error; use std::path::{Path, PathBuf}; use std::process::Command; pub struct Flutter { root: PathBuf, } impl Flutter { pub fn new() -> Result<Self, Error> { let root = if let Ok(root) = std::env::var("FLUTTER_ROOT") { PathBuf::from(root) } else { let flutter = which::which("flutter").expect("flutter not found"); let flutter = std::fs::canonicalize(flutter)?; flutter .parent() .ok_or(Error::FlutterNotFound)? .parent() .ok_or(Error::FlutterNotFound)? .to_owned() }; Ok(Flutter { root }) } pub fn root(&self) -> &Path { &self.root } pub fn engine_version(&self) -> Result<String, Error> { let path = self .root .join("bin") .join("internal") .join("engine.version"); Ok(std::fs::read_to_string(path).map(|v| v.trim().to_owned())?) } pub fn bundle(&self, cargo: &Cargo, build: Build) -> Result<(), Error> { let flag = match build { Build::Debug => "--debug", Build::Release => "--release", Build::Profile => "--profile", }; let status = Command::new("flutter") .current_dir(cargo.workspace().root()) .arg("build") .arg("bundle") .arg(flag) .arg("--track-widget-creation") .arg("--asset-dir") .arg(cargo.build_dir().join("flutter_assets")) .arg("--depfile") .arg(cargo.build_dir().join("snapshot_blob.bin.d")) .status() .expect("flutter build bundle"); if status.code() != Some(0) { return Err(Error::FlutterError); } Ok(()) } pub fn attach(&self, cargo: &Cargo, debug_uri: &str) -> Result<(), Error> { let debug_uri = format!("--debug-uri={}", debug_uri); let status = Command::new("flutter") .current_dir(cargo.workspace().root()) .arg("attach") .arg("--device-id=flutter-tester") .arg(debug_uri) .status() .expect("Success"); if status.code() != Some(0) { return Err(Error::FlutterError); } Ok(()) } pub fn aot( &self, cargo: &Cargo, host_engine_path: &Path, target_engine_path: &Path, ) -> Result<(), Error> { let root = cargo.workspace().root(); let build_dir = cargo.build_dir(); let host_engine_dir = host_engine_path.parent().unwrap(); let target_engine_dir = target_engine_path.parent().unwrap(); let snapshot = build_dir.join("kernel_snapshot.dill"); let status = Command::new(host_engine_dir.join("dart")) .current_dir(root) .arg( host_engine_dir .join("gen") .join("frontend_server.dart.snapshot"), ) .arg("--sdk-root") .arg(host_engine_dir.join("flutter_patched_sdk")) .arg("--target=flutter") .arg("--aot") .arg("--tfa") .arg("-Ddart.vm.product=true") .arg("--packages") .arg(".packages") .arg("--output-dill") .arg(&snapshot) .arg(root.join("lib").join("main.dart")) .status() .expect("Success"); if status.code() != Some(0) { return Err(Error::FlutterError); } let gen_snapshot = [ "gen_snapshot", "gen_snapshot_x64", "gen_snapshot_x86", "gen_snapshot_host_targeting_host", ] .iter() .map(|bin| target_engine_dir.join(bin)) .find(|path| path.exists()) .ok_or(Error::GenSnapshotNotFound)?; let status = Command::new(gen_snapshot) .current_dir(root) .arg("--causal_async_stacks") .arg("--deterministic") .arg("--snapshot_kind=app-aot-elf") .arg("--strip") .arg(format!("--elf={}", build_dir.join("app.so").display())) .arg(&snapshot) .status() .expect("Success"); if status.code() != Some(0) { return Err(Error::FlutterError); } Ok(()) } }