simexec(1): Merge in pschdir(1) functionality

src/pschdir.rs

@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2023_2024 DTB <trinity@trinity.moe>
- * SPDX-License-Identifier: AGPL-3.0-or-later
- *
- * This program is free software: you can redistribute it and/or modify it under
- * the terms of the GNU Affero General Public License as published by the Free
- * Software Foundation, either version 3 of the License, or (at your option) any
- * later version.
- * 
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
- * details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see https://www.gnu.org/licenses/.
- */
-
-use std::{ env::args, io::Error, process::{ Command, ExitCode } };
-
-extern crate strerror;
-use strerror::StrError;
-
-extern crate sysexits;
-use sysexits::{ EX_UNAVAILABLE, EX_USAGE };
-
-fn error(p: &str, n: &str, e: Error) -> ExitCode {
-	eprintln!("{}: {}: {}", p, n, e.strerror());
-	ExitCode::from(EX_UNAVAILABLE as u8)
-}
-
-fn main() -> ExitCode {
-	let argv = args().collect::<Vec<String>>();
-
-	if argv.len() < 3 {
-		eprintln!("Usage: {} directory command [argument]", argv[0]);
-		return ExitCode::from(EX_USAGE as u8);
-	}
-
-	let cmdargs = argv.iter().clone().skip(3).collect::<Vec<&String>>();
-
-	match Command::new(argv[2].clone())
-			.current_dir(argv[1].clone())
-			.args(cmdargs)
-			.spawn() {
-		Ok(mut child) => match child.wait() {
-			Ok(status) => {
-				match status.code() {
-					Some(code) => ExitCode::from(code as u8),
-					None => {
-						eprintln!("{}: {}: process terminated by signal",
-							argv[0], argv[2]);
-						ExitCode::FAILURE
-					}
-				}
-			},
-			Err(e) => error(&argv[0], &argv[2], e)
-		},
-		Err(e) => error(&argv[0], &argv[2], e)
-	}
-}

src/simexec.rs

@@ -23,6 +23,9 @@ use std::{
 	process::{ Command, ExitCode }
 };
 
+extern crate getopt;
+use getopt::GetOpt;
+
 extern crate strerror;
 use strerror::StrError;
 
@@ -34,19 +37,41 @@ fn error(p: &str, n: &str, e: Error) -> ExitCode {
 	ExitCode::from(EX_UNAVAILABLE as u8)
 }
 
-fn main() -> ExitCode {
-	let argv = args().collect::<Vec<String>>();
-
-	if argv.len() < 2 {
-		eprintln!("Usage: {} binary argv...", argv[0]);
-		return ExitCode::from(EX_USAGE as u8);
+fn usage(s: &str) -> ExitCode {
+	eprintln!("Usage: {} command [argument...]");
+	ExitCode::from(EX_USAGE as u8)
 }
 
-	let mut cmd = Command::new(argv[1].clone());
+fn main() -> ExitCode {
+	let argv = args().collect::<Vec<String>>();
+	let mut optind = 0;
 
-	if argv.len() > 2 { cmd.arg0(argv[2].clone()); }
-	if argv.len() > 3 {
-		let cmdargs = argv.iter().clone().skip(3).collect::<Vec<&String>>();
+	let mut arg0: Option<String> = None;
+	let mut dir = String::from(".");
+
+	let mut cmd;
+
+	while let Some(opt) = argv.getopt("C:n") {
+		match opt.opt() {
+			Ok("C") => dir = opt.arg().unwrap(),
+			Ok("n") => arg0 = Some(opt.arg().unwrap()),
+			_ => { return usage(&argv[0]); }
+		}
+		optind = opt.ind();
+	}
+
+	if argv.len() - optind < 1 { return usage(&argv[0]); }
+
+	cmd = Command::new(argv[optind].clone()).current_dir(argv[1].clone());
+
+	if let Some(a) = arg0 { cmd.arg0(a); }
+
+	if argv.len() - optind > 2 {
+		let cmdargs = argv
+			.iter()
+			.clone()
+			.skip(optind + 1)
+			.collect::<Vec<&String>>();
 		cmd.args(cmdargs);
 	}