perf(cli): use args_os (#23039)

Extracted from #22718

cli/args/flags.rs

@@ -17,6 +17,7 @@ use deno_runtime::permissions::parse_sys_kind;
 use log::debug;
 use log::Level;
 use std::env;
+use std::ffi::OsString;
 use std::net::SocketAddr;
 use std::num::NonZeroU32;
 use std::num::NonZeroU8;
@@ -909,7 +910,7 @@ To evaluate code in the shell:
 );
 
 /// Main entry point for parsing deno's command line flags.
-pub fn flags_from_vec(args: Vec<String>) -> clap::error::Result<Flags> {
+pub fn flags_from_vec(args: Vec<OsString>) -> clap::error::Result<Flags> {
   let mut app = clap_root();
   let mut matches = app.try_get_matches_from_mut(&args)?;
 
@@ -4294,7 +4295,7 @@ mod tests {
 
   /// Creates vector of strings, Vec<String>
   macro_rules! svec {
-    ($($x:expr),* $(,)?) => (vec![$($x.to_string()),*]);
+    ($($x:expr),* $(,)?) => (vec![$($x.to_string().into()),*]);
   }
 
   #[test]

cli/lsp/testing/execution.rs

@@ -212,7 +212,7 @@ impl TestRun {
   ) -> Result<(), AnyError> {
     let args = self.get_args();
     lsp_log!("Executing test run with arguments: {}", args.join(" "));
-    let flags = flags_from_vec(args.into_iter().map(String::from).collect())?;
+    let flags = flags_from_vec(args.into_iter().map(From::from).collect())?;
     let factory = CliFactory::from_flags(flags)?;
     // Various test files should not share the same permissions in terms of
     // `PermissionsContainer` - otherwise granting/revoking permissions in one

cli/main.rs

@@ -320,7 +320,7 @@ pub fn main() {
     Box::new(util::draw_thread::DrawThread::show),
   );
 
-  let args: Vec<String> = env::args().collect();
+  let args: Vec<_> = env::args_os().collect();
 
   // NOTE(lucacasonato): due to new PKU feature introduced in V8 11.6 we need to
   // initialize the V8 platform on a parent thread of all threads that will spawn

cli/mainrt.rs

@@ -68,10 +68,9 @@ fn unwrap_or_exit<T>(result: Result<T, AnyError>) -> T {
 }
 
 fn main() {
-  let args: Vec<String> = env::args().collect();
+  let args: Vec<_> = env::args_os().collect();
   let current_exe_path = current_exe().unwrap();
-  let standalone =
-    standalone::extract_standalone(&current_exe_path, args.clone());
+  let standalone = standalone::extract_standalone(&current_exe_path, args);
   let future = async move {
     match standalone {
       Ok(Some(future)) => {

cli/standalone/binary.rs

@@ -2,6 +2,7 @@
 
 use std::collections::BTreeMap;
 use std::env::current_exe;
+use std::ffi::OsString;
 use std::fs;
 use std::future::Future;
 use std::io::Read;
@@ -239,7 +240,7 @@ pub fn is_standalone_binary(exe_path: &Path) -> bool {
 /// the bundle is executed. If not, this function exits with `Ok(None)`.
 pub fn extract_standalone(
   exe_path: &Path,
-  cli_args: Vec<String>,
+  cli_args: Vec<OsString>,
 ) -> Result<
   Option<impl Future<Output = Result<(Metadata, eszip::EszipV2), AnyError>>>,
   AnyError,
@@ -281,7 +282,10 @@ pub fn extract_standalone(
       .context("Failed to read metadata from the current executable")?;
 
     let mut metadata: Metadata = serde_json::from_str(&metadata).unwrap();
-    metadata.argv.append(&mut cli_args[1..].to_vec());
+    metadata.argv.reserve(cli_args.len() - 1);
+    for arg in cli_args.into_iter().skip(1) {
+      metadata.argv.push(arg.into_string().unwrap());
+    }
 
     Ok((metadata, eszip))
   }))