42 lines
1.0 KiB
Rust
42 lines
1.0 KiB
Rust
use crate::Path;
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use clap::{Arg, Command};
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use std::env;
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pub const PATH: Path = Path::Bin;
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pub fn cli() -> Command {
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Command::new("echo")
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.about("Display a line of text")
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.long_about("Echo the STRING(s) to standard output")
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.version(env!("CARGO_PKG_VERSION"))
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.author("Nathan Fisher")
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.args([
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Arg::new("inline")
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.short('n')
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.help("Do not output a trailing newline"),
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Arg::new("STRING").num_args(1..),
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])
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}
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pub fn run() {
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let args: Vec<String> = env::args().collect();
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let idx = match crate::progname() {
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Some(s) if s.as_str() == "echo" => 1,
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Some(_) => 2,
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None => unreachable!(),
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};
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let len = args.len();
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let n = len > idx && args[idx] == "-n";
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let i = if n { idx + 1 } else { idx };
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for (index, arg) in args.iter().enumerate().skip(i) {
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if index < len - 1 {
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print!("{} ", arg);
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} else {
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print!("{}", arg);
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}
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}
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if !n {
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println!();
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}
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}
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