Crate commandext

Source
Expand description

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);
}

Structs§

Functions§

  • header
    Surround a message with 80 # character lines.
  • to_proc
    Generate a closure that returns a Child from the given command.
  • to_procout
    Generate a closure that returns a Output from the given command.
  • to_res
    Generate a closure that returns a Result with the exit code of the process.