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mod env;
mod error;
mod fs;
use std::{
ffi::{OsStr, OsString},
fmt, io,
io::Write,
path::Path,
process::Output,
process::Stdio,
};
use error::CmdErrorKind;
#[doc(hidden)]
pub use xshell_macros::__cmd;
pub use crate::{
env::{pushd, pushenv, Pushd, Pushenv},
error::{Error, Result},
fs::{cp, cwd, mkdir_p, read_dir, read_file, rm_rf, write_file},
};
#[macro_export]
macro_rules! cmd {
($cmd:tt) => {{
#[cfg(trick_rust_analyzer_into_highlighting_interpolated_bits)]
format_args!($cmd);
use $crate::Cmd as __CMD;
let cmd: $crate::Cmd = $crate::__cmd!(__CMD $cmd);
cmd
}};
}
#[must_use]
#[derive(Debug)]
pub struct Cmd {
args: Vec<OsString>,
stdin_contents: Option<Vec<u8>>,
}
impl fmt::Display for Cmd {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut space = "";
for arg in &self.args {
write!(f, "{}", space)?;
space = " ";
let arg = arg.to_string_lossy();
if arg.chars().any(|it| it.is_ascii_whitespace()) {
write!(f, "\"{}\"", arg.escape_default())?
} else {
write!(f, "{}", arg)?
};
}
Ok(())
}
}
impl From<Cmd> for std::process::Command {
fn from(cmd: Cmd) -> Self {
cmd.command()
}
}
impl Cmd {
pub fn new(program: impl AsRef<Path>) -> Cmd {
Cmd::_new(program.as_ref())
}
fn _new(program: &Path) -> Cmd {
Cmd { args: vec![program.as_os_str().to_owned()], stdin_contents: None }
}
pub fn arg(mut self, arg: impl AsRef<OsStr>) -> Cmd {
self._arg(arg.as_ref());
self
}
pub fn args<I>(mut self, args: I) -> Cmd
where
I: IntoIterator,
I::Item: AsRef<OsStr>,
{
args.into_iter().for_each(|it| self._arg(it.as_ref()));
self
}
pub fn arg_if(mut self, cond: bool, arg: impl AsRef<OsStr>) -> Cmd {
if cond {
self._arg(arg.as_ref())
}
self
}
fn _arg(&mut self, arg: &OsStr) {
self.args.push(arg.to_owned())
}
#[doc(hidden)]
pub fn __extend_arg(mut self, arg: impl AsRef<OsStr>) -> Cmd {
self.___extend_arg(arg.as_ref());
self
}
fn ___extend_arg(&mut self, arg: &OsStr) {
self.args.last_mut().unwrap().push(arg)
}
pub fn stdin(mut self, stdin: impl AsRef<[u8]>) -> Cmd {
self._stdin(stdin.as_ref());
self
}
fn _stdin(&mut self, stdin: &[u8]) {
self.stdin_contents = Some(stdin.to_vec());
}
pub fn read(self) -> Result<String> {
match self.read_raw() {
Ok(output) if output.status.success() => {
let mut stdout = String::from_utf8(output.stdout)
.map_err(|utf8_err| CmdErrorKind::NonUtf8Stdout(utf8_err).err(self))?;
if stdout.ends_with('\n') {
stdout.pop();
}
Ok(stdout)
}
Ok(output) => Err(CmdErrorKind::NonZeroStatus(output.status).err(self)),
Err(io_err) => Err(CmdErrorKind::Io(io_err).err(self)),
}
}
fn read_raw(&self) -> io::Result<Output> {
let mut child = self
.command()
.stdin(match &self.stdin_contents {
Some(_) => Stdio::piped(),
None => Stdio::null(),
})
.stderr(Stdio::piped())
.stdout(Stdio::piped())
.spawn()?;
if let Some(stdin_contents) = &self.stdin_contents {
let mut stdin = child.stdin.take().unwrap();
stdin.write_all(stdin_contents)?;
stdin.flush()?;
}
child.wait_with_output()
}
pub fn run(self) -> Result<()> {
println!("$ {}", self);
match self.command().status() {
Ok(status) if status.success() => Ok(()),
Ok(status) => Err(CmdErrorKind::NonZeroStatus(status).err(self)),
Err(io_err) => Err(CmdErrorKind::Io(io_err).err(self)),
}
}
fn command(&self) -> std::process::Command {
let mut res = std::process::Command::new(&self.args[0]);
res.args(&self.args[1..]);
res
}
}