Enum cap_std::path::Component

pub enum Component<'a> {
    Prefix(PrefixComponent<'a>),
    RootDir,
    CurDir,
    ParentDir,
    Normal(&'a OsStr),
}

A single component of a path.

A Component roughly corresponds to a substring between path separators (/ or \).

This enum is created by iterating over Components, which in turn is created by the components method on Path.

Examples

use std::path::{Component, Path};

let path = Path::new("/tmp/foo/bar.txt");
let components = path.components().collect::<Vec<_>>();
assert_eq!(&components, &[
    Component::RootDir,
    Component::Normal("tmp".as_ref()),
    Component::Normal("foo".as_ref()),
    Component::Normal("bar.txt".as_ref()),
]);

Variants

Prefix(PrefixComponent<'a>)

A Windows path prefix, e.g., C: or \\server\share.

There is a large variety of prefix types, see Prefix’s documentation for more.

Does not occur on Unix.

RootDir

The root directory component, appears after any prefix and before anything else.

It represents a separator that designates that a path starts from root.

CurDir

A reference to the current directory, i.e., ..

ParentDir

A reference to the parent directory, i.e., ...

Normal(&'a OsStr)

A normal component, e.g., a and b in a/b.

This variant is the most common one, it represents references to files or directories.

Implementations

impl<'a> Component<'a>

pub fn as_os_str(self) -> &'a OsStr

Extracts the underlying OsStr slice.

Examples

use std::path::Path;

let path = Path::new("./tmp/foo/bar.txt");
let components: Vec<_> = path.components().map(|comp| comp.as_os_str()).collect();
assert_eq!(&components, &[".", "tmp", "foo", "bar.txt"]);

Trait Implementations

impl<'a> Arg for Component<'a>

This is supported on crate feature std only.

pub fn as_str(&self) -> Result<&str, Error>

Returns a view of this string as a string slice.

pub fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.

pub fn as_cow_z_str(&self) -> Result<Cow<'_, CStr>, Error>

Returns a view of this string as a maybe-owned ZStr.

pub fn into_z_str<'b>(self) -> Result<Cow<'b, CStr>, Error> where
    Component<'a>: 'b, 

Consumes self and returns a view of this string as a maybe-owned ZStr.

pub fn into_with_z_str<T, F>(self, f: F) -> Result<T, Error> where
    F: FnOnce(&CStr) -> Result<T, Error>,
    Component<'a>: Sized, 

Runs a closure with self passed in as a &ZStr.

fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Error>

This is supported on non-crate feature rustc-dep-of-std only.

Returns a view of this string as a maybe-owned ZStr.

fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Error> where
    Self: 'b, 

This is supported on non-crate feature rustc-dep-of-std only.

Consumes self and returns a view of this string as a maybe-owned ZStr.

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Error> where
    F: FnOnce(&CStr) -> Result<T, Error>, 

This is supported on non-crate feature rustc-dep-of-std only.

Runs a closure with self passed in as a &ZStr.

impl<'a> Arg for Component<'a>

This is supported on crate feature std only.

pub fn as_str(&self) -> Result<&str, Error>

Returns a view of this string as a string slice.

pub fn to_string_lossy(&self) -> Cow<'_, str>

Returns a potentially-lossy rendering of this string as a Cow<'_, str>.

pub fn as_cow_z_str(&self) -> Result<Cow<'_, CStr>, Error>

Returns a view of this string as a maybe-owned ZStr.

pub fn into_z_str<'b>(self) -> Result<Cow<'b, CStr>, Error> where
    Component<'a>: 'b, 

Consumes self and returns a view of this string as a maybe-owned ZStr.

pub fn into_with_z_str<T, F>(self, f: F) -> Result<T, Error> where
    F: FnOnce(&CStr) -> Result<T, Error>,
    Component<'a>: Sized, 

Runs a closure with self passed in as a &ZStr.

fn as_cow_c_str(&self) -> Result<Cow<'_, CStr>, Error>

This is supported on non-crate feature rustc-dep-of-std only.

Returns a view of this string as a maybe-owned ZStr.

fn into_c_str<'b>(self) -> Result<Cow<'b, CStr>, Error> where
    Self: 'b, 

This is supported on non-crate feature rustc-dep-of-std only.

Consumes self and returns a view of this string as a maybe-owned ZStr.

fn into_with_c_str<T, F>(self, f: F) -> Result<T, Error> where
    F: FnOnce(&CStr) -> Result<T, Error>, 

This is supported on non-crate feature rustc-dep-of-std only.

Runs a closure with self passed in as a &ZStr.

impl<'_> AsRef<OsStr> for Component<'_>

pub fn as_ref(&self) -> &OsStr

Performs the conversion.

impl<'_> AsRef<Path> for Component<'_>

pub fn as_ref(&self) -> &Path

Performs the conversion.

impl<'a> Clone for Component<'a>

pub fn clone(&self) -> Component<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Component<'a>

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

Formats the value using the given formatter.

impl<'a> Hash for Component<'a>

pub fn hash<__H>(&self, state: &mut __H) where
    __H: Hasher, 

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<'a> Ord for Component<'a>

pub fn cmp(&self, other: &Component<'a>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<'a> PartialEq<Component<'a>> for Component<'a>

pub fn eq(&self, other: &Component<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &Component<'a>) -> bool

This method tests for !=.

impl<'a> PartialOrd<Component<'a>> for Component<'a>

pub fn partial_cmp(&self, other: &Component<'a>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a> Copy for Component<'a>

impl<'a> Eq for Component<'a>

impl<'a> StructuralEq for Component<'a>

impl<'a> StructuralPartialEq for Component<'a>