Struct ubend::Chain

pub struct Chain { /* private fields */ }

Represents a pipe chain.

Implementations

impl Chain

pub fn kill_all(&mut self, sig: c_int) -> Result<(), KillError>

Send signal sig to all child processes.

pub fn new(pipes: Vec<Command>) -> Result<Self>

Create a new pipe chain. This function is called by the ubend!() macro.

pub fn stdin(&mut self) -> Option<File>

Take ownership of stdin of the first process in the chain.

If the setup didn’t create a pipe at the given location or the pipe was already taken this function returns None.

pub fn stdout(&mut self) -> Option<File>

Take ownership of stdout of the last process in the chain.

If the setup didn’t create a pipe at the given location or the pipe was already taken this function returns None.

pub fn stderr(&mut self) -> Option<File>

Take ownership of stderr of the last process in the chain.

If the setup didn’t create a pipe at the given location or the pipe was already taken this function returns None.

pub fn stdin_at(&mut self, index: usize) -> Option<File>

Take ownership of stdin of the process at index in the chain.

If the index is out of bounds or the setup didn’t create a pipe at the given location or the pipe was already taken this function returns None.

pub fn stdout_at(&mut self, index: usize) -> Option<File>

Take ownership of stdout of the process at index in the chain.

If the index is out of bounds or the setup didn’t create a pipe at the given location or the pipe was already taken this function returns None.

pub fn stderr_at(&mut self, index: usize) -> Option<File>

Take ownership of stderr of the process at index in the chain.

If the index is out of bounds or the setup didn’t create a pipe at the given location or the pipe was already taken this function returns None.

pub fn children(&self) -> &[Child]

pub fn children_mut(&mut self) -> &mut [Child]

pub fn wait_all(&mut self) -> Vec<WaitResult>

Wait for all child processes to finish.

pub fn wait_last(&mut self) -> WaitResult

Wait for the last child process to finish.

pub fn output(self) -> Result<Output, OutputError>

Close stdin of the first child process and read stdout and stderr of the last child process (if possible) and wait for the last child process to finish.

Trait Implementations

impl Debug for Chain

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.