【Rust】管道
环境
- Rust 1.56.1
- VSCode 1.61.2
概念
参考:https://doc.rust-lang.org/stable/rust-by-example/std_misc/process/pipe.html
示例
main.rs
use std::{
io::{Read, Write},
process::{Command, Stdio},
};
static PANGRAM: &str = "the quick brown fox jumped over the lazy dog\n";
fn main() {
// Spawn the `wc` command
let process = match Command::new("wc")
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
{
Err(why) => panic!("couldn't spawn wc: {}", why),
Ok(process) => process,
};
match process.stdin.unwrap().write_all(PANGRAM.as_bytes()) {
Err(why) => panic!("couldn't write to wc stdin: {}", why),
Ok(_) => println!("sent pangram to wc"),
}
let mut s = String::new();
match process.stdout.unwrap().read_to_string(&mut s) {
Err(why) => panic!("couldn't read wc stdout: {}", why),
Ok(_) => print!("wc responded with:\n{}", s),
}
}
总结
了解了 Rust 中管道的使用方式。
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