Enum std::path::Prefix

pub enum Prefix<'a> {
    Verbatim(&'a OsStr),
    VerbatimUNC(&'a OsStr, &'a OsStr),
    VerbatimDisk(u8),
    DeviceNS(&'a OsStr),
    UNC(&'a OsStr, &'a OsStr),
    Disk(u8),
}

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

Windows uses a variety of path prefix styles, including references to drive volumes (like C:), network shared folders (like \\server\share), and others. In addition, some path prefixes are “verbatim” (i.e., prefixed with \\?\), in which case / is not treated as a separator and essentially no normalization is performed.

Examples

use std::path::{Component, Path, Prefix};
use std::path::Prefix::*;
use std::ffi::OsStr;

fn get_path_prefix(s: &str) -> Prefix {
    let path = Path::new(s);
    match path.components().next().unwrap() {
        Component::Prefix(prefix_component) => prefix_component.kind(),
        _ => panic!(),
    }
}

assert_eq!(Verbatim(OsStr::new("pictures")),
           get_path_prefix(r"\\?\pictures\kittens"));
assert_eq!(VerbatimUNC(OsStr::new("server"), OsStr::new("share")),
           get_path_prefix(r"\\?\UNC\server\share"));
assert_eq!(VerbatimDisk(b'C'), get_path_prefix(r"\\?\c:\"));
assert_eq!(DeviceNS(OsStr::new("BrainInterface")),
           get_path_prefix(r"\\.\BrainInterface"));
assert_eq!(UNC(OsStr::new("server"), OsStr::new("share")),
           get_path_prefix(r"\\server\share"));
assert_eq!(Disk(b'C'), get_path_prefix(r"C:\Users\Rust\Pictures\Ferris"));

Variants

Verbatim prefix, e.g., \\?\cat_pics.

Verbatim prefixes consist of \\?\ immediately followed by the given component.

Verbatim prefix using Windows’ Uniform Naming Convention, e.g., \\?\UNC\server\share.

Verbatim UNC prefixes consist of \\?\UNC\ immediately followed by the server’s hostname and a share name.

Verbatim disk prefix, e.g., \\?\C:.

Verbatim disk prefixes consist of \\?\ immediately followed by the drive letter and :.

Device namespace prefix, e.g., \\.\COM42.

Device namespace prefixes consist of \\.\ immediately followed by the device name.

Prefix using Windows’ Uniform Naming Convention, e.g. \\server\share.

UNC prefixes consist of the server’s hostname and a share name.

Prefix C: for the given disk drive.

Implementations

use std::path::Prefix::*;
use std::ffi::OsStr;

assert!(Verbatim(OsStr::new("pictures")).is_verbatim());
assert!(VerbatimUNC(OsStr::new("server"), OsStr::new("share")).is_verbatim());
assert!(VerbatimDisk(b'C').is_verbatim());
assert!(!DeviceNS(OsStr::new("BrainInterface")).is_verbatim());
assert!(!UNC(OsStr::new("server"), OsStr::new("share")).is_verbatim());
assert!(!Disk(b'C').is_verbatim());

Trait Implementations

Auto Trait Implementations

Blanket Implementations