Oleksandr Kozachuk
35 lines
1.3 KiB
Rust
35 lines
1.3 KiB
Rust
use std::io;
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use std::io::{Read, Write};
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use std::process::{Command, Stdio};
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pub fn call_cmd_with_input(cmd: &str, args: Vec<&str>, input: &str) -> io::Result<String> {
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let mut cmd = Command::new(cmd).args(args).stdin(Stdio::piped()).stdout(Stdio::piped()).spawn()?;
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let mut stdin = cmd.stdin.take().unwrap();
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let stdout = cmd.stdout.as_mut().unwrap();
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let in_data = input.to_string();
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let write_handle = std::thread::spawn(move || stdin.write_all(in_data.as_bytes()));
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let mut output = Vec::new();
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stdout.read_to_end(&mut output)?;
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match write_handle.join() {
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Ok(_) => (),
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Err(_) => return Err(io::Error::new(io::ErrorKind::Other, "Failed to run command")),
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}
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match String::from_utf8(output) {
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Ok(x) => Ok(x),
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Err(err) => Err(io::Error::new(io::ErrorKind::InvalidData, err.utf8_error())),
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn cmd_exec_test() {
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assert_eq!(call_cmd_with_input("true", vec![], "").unwrap(), "".to_string());
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assert_eq!(call_cmd_with_input("cat", vec![], "ok").unwrap(), "ok".to_string());
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assert_ne!(call_cmd_with_input("cat", vec![], "notok").unwrap(), "ok".to_string());
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assert_eq!(call_cmd_with_input("echo", vec!["-n", "test is ok"], "").unwrap(), "test is ok".to_string());
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}
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}
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