shell::command_data

Struct Redirects

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pub struct Redirects { /* private fields */ }
Expand description

Contains a stack or redirects that can be processed in order to setup the file descriptors for a new process.

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impl Redirects

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pub fn new() -> Self

Create a new empty redirect stack.

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pub fn process(&self, jobs: &mut Jobs) -> Result<HashSet<FileDesc>, Error>

Process the stack in order and setup all the requested file descriptors. Returns a Set containing all the file descriptors setup (to avoid closing them on process start).

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pub fn set_in_internal_fd( &mut self, dest_fd: FileDesc, source_fd: FileDesc, push_back: bool, )

Push a fd to fd redirect onto the stack. This is for internally managed source FDs (for pipes etc). If push_back is true then push to the end else put on the front (useful for pipes).

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pub fn set_out_internal_fd( &mut self, dest_fd: FileDesc, source_fd: FileDesc, push_back: bool, )

Push a fd to fd redirect onto the stack. This is for internally managed source FDs (for pipes etc). If push_back is true then push to the end else put on the front (useful for pipes).

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pub fn set_in_fd(&mut self, dest_fd: FileDesc, source_fd: Arg, push_back: bool)

Push a fd to fd redirect onto the stack. If push_back is true then push to the end else put on the front (useful for pipes).

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pub fn set_out_fd(&mut self, dest_fd: FileDesc, source_fd: Arg, push_back: bool)

Push a fd to fd redirect onto the stack. If push_back is true then push to the end else put on the front (useful for pipes).

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pub fn set_in_out_fd(&mut self, dest_fd: FileDesc, source_fd: Arg)

Push a fd to fd redirect onto the stack.

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pub fn set_in_out_path(&mut self, dest_fd: FileDesc, path: Arg)

Push an input file path to the redirect stack for fd.

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pub fn set_in_path(&mut self, dest_fd: FileDesc, path: Arg)

Push an input file path to the redirect stack for fd.

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pub fn set_in_direct(&mut self, dest_fd: FileDesc, data: Arg)

Push input data to the redirect stack for fd.

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pub fn set_out_path(&mut self, dest_fd: FileDesc, path: Arg, overwrite: bool)

Push an output file path to the redirect stack for fd.

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pub fn clear(&mut self)

Clear the redirect stack.

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pub fn extend(&mut self, other: &Redirects)

Extend this redir stack with the redirs from other.

Trait Implementations§

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impl Clone for Redirects

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fn clone(&self) -> Redirects

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Redirects

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

Formats the value using the given formatter. Read more
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impl Default for Redirects

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Display for Redirects

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.