std::path - Rust
Description: API documentation for the Rust `path` mod in crate `std`.
Keywords: rust, rustlang, rust-lang, path

# 1.0.0[−][src]Module std::path

Cross-platform path manipulation.

This module provides two types, `PathBuf` and `Path` (akin to `String` and `str`), for working with paths abstractly. These types are thin wrappers around `OsString` and `OsStr` respectively, meaning that they work directly on strings according to the local platform's path syntax.

Paths can be parsed into `Component`s by iterating over the structure returned by the `components` method on `Path`. `Component`s roughly correspond to the substrings between path separators (`/` or `\`). You can reconstruct an equivalent path from components with the `push` method on `PathBuf`; note that the paths may differ syntactically by the normalization described in the documentation for the `components` method.

## Simple usage

Path manipulation includes both parsing components from slices and building new owned paths.

To parse a path, you can create a `Path` slice from a `str` slice and start asking questions:

    use std::path::Path;
    use std::ffi::OsStr;

    let path = Path::new("/tmp/foo/bar.txt");

    let parent = path.parent();
    assert_eq!(parent, Some(Path::new("/tmp/foo")));

    let file_stem = path.file_stem();
    assert_eq!(file_stem, Some(OsStr::new("bar")));

    let extension = path.extension();
    assert_eq!(extension, Some(OsStr::new("txt")));Run

To build or modify paths, use `PathBuf`:

    use std::path::PathBuf;

    // This way works...
    let mut path = PathBuf::from("c:\\");

    path.push("windows");
    path.push("system32");

    path.set_extension("dll");

    // ... but push is best used if you don't know everything up
    // front. If you do, this way is better:
    let path: PathBuf = ["c:\\", "windows", "system32.dll"].iter().collect();Run

## Structs

Ancestors | An iterator over `Path` and its ancestors.
Components | An iterator over the `Component`s of a `Path`.
Display | Helper struct for safely printing paths with `format!` and `{}`.
Iter | An iterator over the `Component`s of a `Path`, as `OsStr` slices.
Path | A slice of a path (akin to `str`).
PathBuf | An owned, mutable path (akin to `String`).
PrefixComponent | A structure wrapping a Windows path prefix as well as its unparsed string representation.
StripPrefixError | An error returned from `Path::strip_prefix` if the prefix was not found.

## Enums

Component | A single component of a path.
Prefix | Windows path prefixes, e.g., `C:` or `\\server\share`.

## Constants

MAIN_SEPARATOR | The primary separator of path components for the current platform.

## Functions

is_separator | Determines whether the character is one of the permitted path separators for the current platform.

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)