commandext

A Command extension suitable for use by Rust Builders.

Version

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT) at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

Defines the CommandExt type.

CommandExt wraps Command and enhances it.

A CommandExt is built similar to a Command. Supply the command name, add args, set enviroment variables, etc. The exec function takes a closure that executes the command and returns the given result T.

Examples

use commandext::{CommandExt,to_procout};

let mut cmd = CommandExt::new("echo");
cmd.env("DEBUG", "true");
cmd.arg("test");

let output = cmd.exec(to_procout());

// Execute "echo 'Testing Spawn'" via spawn and verify the exit code was 0.
// As a side effect, you would see 'Testing Spawn' on stdout.
use commandext::{CommandExt,to_res};

let res = CommandExt::new("echo").arg("Testing Spawn").exec(to_res());

assert_eq!(Ok(0), res);

// Exeute "echo test" via output and verify the output is indeed "test\n".
// In this case there is nothing on stdout.  The output is consumed here.
extern crate sodium_sys;
extern crate commandext;

use commandext::{CommandExt,to_procout};
use sodium_sys::crypto::utils::secmem;

fn main() {
    let cmd = CommandExt::new("echo").arg("test").exec(to_procout());
    let output = cmd.unwrap();

    assert_eq!(secmem::memcmp(&[116, 101, 115, 116, 10], &output.stdout[..]), 0);
}