use crate::child;
use crate::install::{self, Tool};
use crate::PBAR;
use binary_install::{Cache, Download};
use std::path::Path;
use std::process::Command;
pub fn run(
cache: &Cache,
out_dir: &Path,
args: &[String],
install_permitted: bool,
) -> Result<(), failure::Error> {
let wasm_opt = match find_wasm_opt(cache, install_permitted)? {
install::Status::Found(path) => path,
install::Status::CannotInstall => {
PBAR.info("Skipping wasm-opt as no downloading was requested");
return Ok(());
}
install::Status::PlatformNotSupported => {
PBAR.info("Skipping wasm-opt because it is not supported on this platform");
return Ok(());
}
};
let wasm_opt_path = wasm_opt.binary(&Tool::WasmOpt.to_string())?;
PBAR.info("Optimizing wasm binaries with `wasm-opt`...");
for file in out_dir.read_dir()? {
let file = file?;
let path = file.path();
if path.extension().and_then(|s| s.to_str()) != Some("wasm") {
continue;
}
let tmp = path.with_extension("wasm-opt.wasm");
let mut cmd = Command::new(&wasm_opt_path);
cmd.arg(&path).arg("-o").arg(&tmp).args(args);
child::run(cmd, "wasm-opt")?;
std::fs::rename(&tmp, &path)?;
}
Ok(())
}
pub fn find_wasm_opt(
cache: &Cache,
install_permitted: bool,
) -> Result<install::Status, failure::Error> {
if let Ok(path) = which::which("wasm-opt") {
PBAR.info(&format!("found wasm-opt at {:?}", path));
match path.as_path().parent() {
Some(path) => return Ok(install::Status::Found(Download::at(path))),
None => {}
}
}
let version = "version_78";
Ok(install::download_prebuilt(
&install::Tool::WasmOpt,
cache,
version,
install_permitted,
)?)
}