54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
use clap::{Arg, Command, ArgAction};
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use std::io;
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use super::Cmd;
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#[derive(Debug)]
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pub struct Nproc {
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name: &'static str,
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path: Option<crate::Path>,
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}
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impl Default for Nproc {
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fn default() -> Self {
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Self {
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name: "nproc",
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path: Some(crate::Path::UsrBin),
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}
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}
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}
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impl Cmd for Nproc {
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fn name(&self) -> &str {
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self.name
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}
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fn cli(&self) -> clap::Command {
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Command::new(self.name)
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.author("Nathan Fisher")
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.about("Print the number of processing units available")
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.arg(
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Arg::new("ALL")
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.help("Print the number of installed processors")
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.short('a')
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.long("all")
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.action(ArgAction::SetTrue),
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)
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}
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fn run(&self, matches: Option<&clap::ArgMatches>) -> Result<(), Box<dyn std::error::Error>> {
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let Some(matches) = matches else {
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return Err(Box::new(io::Error::new(io::ErrorKind::Other, "no input")));
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};
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if matches.get_flag("ALL") {
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println!("{}", num_cpus::get());
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} else {
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println!("{}", num_cpus::get_physical());
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}
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Ok(())
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}
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fn path(&self) -> Option<crate::Path> {
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self.path
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}
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}
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