Struct OpenFiles 

pub struct OpenFiles { /* private fields */ }

Represents the open files in a shell context.

Implementations

impl OpenFiles

pub const STDIN_FD: u32 = 0u32

File descriptor used for standard input.

pub const STDOUT_FD: u32 = 1u32

File descriptor used for standard output.

pub const STDERR_FD: u32 = 2u32

File descriptor used for standard error.

pub fn try_clone(&self) -> Result<Self, Error>

Tries to clone the open files.

pub fn stdin(&self) -> Option<&OpenFile>

Retrieves the file backing standard input in this context.

pub fn stdout(&self) -> Option<&OpenFile>

Retrieves the file backing standard output in this context.

pub fn stderr(&self) -> Option<&OpenFile>

Retrieves the file backing standard error in this context.

pub fn remove(&mut self, fd: u32) -> Option<OpenFile>

Tries to remove an open file by its file descriptor. If the file descriptor is not used, None will be returned; otherwise, the removed file will be returned.

Arguments:

• fd: The file descriptor to remove.

pub fn get(&self, fd: u32) -> Option<&OpenFile>

Tries to lookup the OpenFile associated with a file descriptor. If the file descriptor is not used, None will be returned; otherwise, a reference to the OpenFile will be returned.

Arguments:

• fd: The file descriptor to lookup.

pub fn contains(&self, fd: u32) -> bool

Checks if the given file descriptor is in use.

pub fn is_empty(&self) -> bool

Checks if there are no open files in this context.

pub fn set(&mut self, fd: u32, file: OpenFile) -> Option<OpenFile>

Associates the given file descriptor with the provided file. If the file descriptor is already in use, the previous file will be returned; otherwise, None will be returned.

Arguments:

• fd: The file descriptor to associate with the file.
• file: The file to associate with the file descriptor.

Trait Implementations

impl Clone for OpenFiles

fn clone(&self) -> OpenFiles

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for OpenFiles

fn default() -> Self

Returns the “default value” for a type.

impl IntoIterator for OpenFiles

type Item = (u32, OpenFile)

The type of the elements being iterated over.

type IntoIter = <HashMap<u32, OpenFile> as IntoIterator>::IntoIter

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.