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#[macro_export]
/// Fork into a process from a Verse
///
/// Figures out whether or not the given Verse is a couplet. If it is, fork
/// into a process, and pipe the contents of out `out` into STDIN. If not, then
/// simply fork into the process.
///
/// # Arguments
/// * `$verse: &Verse` - The verse to fork into
/// * `$out: &mut String` - If the $verse is a couplet, the contents of STDOUT from the last verse
macro_rules! task {
($verse:expr, $out:expr) => {
if $verse.couplet {
let mut child = Command::new($verse.verb())
.args($verse.clause())
.stdin(Stdio::piped())
.spawn()?;
let stdin = child.stdin.as_mut().ok_or(io::ErrorKind::BrokenPipe)?;
stdin.write_all(&$out.as_bytes())?;
$out.clear();
child
} else {
Command::new($verse.verb()).args($verse.clause()).spawn()?
}
};
}
/// Fork into a process from a Verse, and capture STDOUT
///
/// Figures out whether or not the given Verse is a couplet. If it is, fork
/// into a process, and pipe the contents of out `out` into STDIN. If not, then
/// simply fork into the process. Additionally, this function will capture
/// STDOUT of the process specified by the Verse, and store it in `out`.
///
/// # Arguments
/// * `$verse: &Verse` - The verse to fork into
/// * `$out: &mut String` - If the $verse is a couplet, the contents of STDOUT from the last verse
#[macro_export()]
macro_rules! ctask {
($verse:expr, $out:expr) => {
if $verse.couplet {
let mut child = Command::new($verse.verb())
.args($verse.clause())
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()?;
let stdin = child.stdin.as_mut().ok_or(io::ErrorKind::BrokenPipe)?;
stdin.write_all(&$out.as_bytes())?;
$out.clear();
child
} else {
Command::new($verse.verb())
.args($verse.clause())
.stdout(Stdio::piped())
.spawn()?
}
};
}
#[macro_export]
/// Fork into a background process from a Verse
///
/// Figures out whether or not the given Verse is a couplet. If it is, fork
/// into a backgournd process, and pipe the contents of out `out` into STDIN.
/// If not, then simply fork into the background process.
///
/// # Arguments
/// * `$verse: &Verse` - The verse to fork into
/// * `$out: &mut String` - If the $verse is a couplet, the contents of STDOUT from the last verse
macro_rules! btask {
($verse:expr, $out:expr) => {
if $verse.couplet {
let mut child = Command::new($verse.verb())
.args($verse.clause())
.stdin(Stdio::piped())
.process_group(0)
.spawn()?;
let stdin = child.stdin.as_mut().ok_or(io::ErrorKind::BrokenPipe)?;
stdin.write_all(&$out.as_bytes())?;
$out.clear();
child
} else {
Command::new($verse.verb())
.args($verse.clause())
.process_group(0)
.spawn()?
}
};
}
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