Enum Redirection 

pub enum Redirection {
    Input(String),
    Output(String),
    OutputClobber(String),
    Append(String),
    FdInput(i32, String),
    FdOutput(i32, String),
    FdOutputClobber(i32, String),
    FdAppend(i32, String),
    FdDuplicate(i32, i32),
    FdClose(i32),
    FdInputOutput(i32, String),
    HereDoc(String, String),
    HereString(String),
}

Represents a single I/O redirection operation.

Redirections are processed in left-to-right order as they appear in the command, per POSIX specification. Each redirection modifies the file descriptor table before command execution.

Variants

Input(String)

Input from file: < file or 0< file.

Redirects standard input (fd 0) from the specified file.

Output(String)

Output to file: > file or 1> file.

Redirects standard output (fd 1) to the specified file, truncating it. Respects the noclobber option if set.

OutputClobber(String)

Output to file with noclobber override: >| file.

Redirects standard output to the specified file, truncating it. Ignores the noclobber option.

Append(String)

Append to file: >> file or 1>> file.

Redirects standard output (fd 1) to the specified file, appending to it.

FdInput(i32, String)

Input from file with explicit fd: N< file.

Redirects the specified file descriptor from the file.

FdOutput(i32, String)

Output to file with explicit fd: N> file.

Redirects the specified file descriptor to the file, truncating it. Respects the noclobber option if set.

FdOutputClobber(i32, String)

Output to file with explicit fd and noclobber override: N>| file.

Redirects the specified file descriptor to the file, truncating it. Ignores the noclobber option.

FdAppend(i32, String)

Append to file with explicit fd: N>> file.

Redirects the specified file descriptor to the file, appending to it.

FdDuplicate(i32, i32)

Duplicate file descriptor: N>&M or N<&M.

Makes file descriptor N a copy of file descriptor M. Both descriptors refer to the same open file description.

FdClose(i32)

Close file descriptor: N>&- or N<&-.

Closes the specified file descriptor.

FdInputOutput(i32, String)

Open file for read/write: N<> file.

Opens the file for both reading and writing on the specified fd.

HereDoc(String, String)

Here-document: << EOF ... EOF.

Provides input from a multi-line string literal. The first string is the delimiter, the second is the content. The boolean indicates whether the delimiter was quoted (affects expansion).

HereString(String)

Here-string: <<< "string".

Provides input from a single-line string.

Trait Implementations

impl Clone for Redirection

fn clone(&self) -> Redirection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Redirection

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

Formats the value using the given formatter.

impl PartialEq for Redirection

fn eq(&self, other: &Redirection) -> 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 Eq for Redirection

impl StructuralPartialEq for Redirection