Struct FileDescEnv 

pub struct FileDescEnv<T> { /* private fields */ }

An environment module for setting and getting shell file descriptors.

Implementations

impl<T> FileDescEnv<T>

pub fn new() -> Self

Constructs a new environment with no open file descriptors.

pub fn with_capacity(capacity: usize) -> Self

Constructs a new environment with no open file descriptors, but with a specified capacity for storing open file descriptors.

pub fn with_process_stdio() -> Result<Self>

where T: From<FileDesc>,

Constructs a new environment and initializes it with duplicated stdio file descriptors or handles of the current process.

pub fn with_fds<I: IntoIterator<Item = (Fd, T, Permissions)>>(iter: I) -> Self

Constructs a new environment with a provided collection of provided file descriptors in the form (shell_fd, handle, permissions).

Trait Implementations

impl<T> Clone for FileDescEnv<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for FileDescEnv<T>

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

Formats the value using the given formatter.

impl<T> Default for FileDescEnv<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: Clone + Eq> FileDescEnvironment for FileDescEnv<T>

type FileHandle = T

A file handle (or wrapper) to associate with shell file descriptors.

fn file_desc(&self, fd: Fd) -> Option<(&Self::FileHandle, Permissions)>

Get the permissions and a handle associated with an opened file descriptor.

fn set_file_desc( &mut self, fd: Fd, handle: Self::FileHandle, perms: Permissions, )

Associate a file descriptor with a given handle and permissions.

fn close_file_desc(&mut self, fd: Fd)

Treat the specified file descriptor as closed for the current environment.

impl<T: PartialEq> PartialEq for FileDescEnv<T>

fn eq(&self, other: &FileDescEnv<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> SubEnvironment for FileDescEnv<T>

fn sub_env(&self) -> Self

Create a new sub-environment, which starts out idential to its parent, but any changes on the new environment will not be reflected on the parent.

impl<T: Eq> Eq for FileDescEnv<T>

impl<T> StructuralPartialEq for FileDescEnv<T>