taskcmd 0.1.3

Task commander
Documentation 
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use super::errors::*;
use std::ffi::OsStr;
use std::path::Path;
use std::process::{Command, ExitStatus, Stdio};

/// Executes a given command in shell.
pub fn execute(arg: impl AsRef<OsStr>, dir: impl AsRef<Path>) -> Result<ExitStatus> {
  let mut command = Command::new(get_shell_command());
  let mut child = command
    .args(get_shell_args())
    .arg(arg)
    .current_dir(dir)
    .stdin(Stdio::inherit())
    .stdout(Stdio::inherit())
    .stderr(Stdio::inherit())
    .spawn()
    .map_err(|e| err_command_spawn(e.to_string()))?;
  // It is rare for the following command to fail.
  // If it does, let the code panic.
  Ok(child.wait().expect("failed to wait for child process"))
}

/// Returns a shell command specific for the operating system.
#[cfg(target_os = "macos")]
fn get_shell_command() -> &'static str {
  "/bin/zsh"
}

#[cfg(target_os = "linux")]
fn get_shell_command() -> &'static str {
  "/bin/sh"
}

#[cfg(target_os = "windows")]
fn get_shell_command() -> &'static str {
  "cmd"
}

/// Returns options required by a shell command.
#[cfg(unix)]
fn get_shell_args() -> &'static [&'static str] {
  &["-c"]
}

#[cfg(target_os = "windows")]
fn get_shell_args() -> &'static [&'static str] {
  &["/c"]
}