A library for extending Path
and PathBuf
in order to parse the path which contains dots.
Please read the following examples to know the parsing rules.
If a path starts with a single dot, the dot means current working directory.
```rust extern crate path_dedot;
use std::path::Path;
use path_dedot::*;
let p = Path::new("./path/to/123/456");
asserteq!(Path::join(&CWD, Path::new("path/to/123/456")).tostr().unwrap(), p.parsedot().unwrap().tostr().unwrap()); ```
If a path starts with a pair of dots, the dots means the parent of current working directory. If current working directory is root, the parent is still root.
```rust extern crate path_dedot;
use std::path::Path;
use path_dedot::*;
let p = Path::new("../path/to/123/456");
let cwd_parent = CWD.parent();
match cwdparent { Some(cwdparent) => { asserteq!(Path::join(&cwdparent, Path::new("path/to/123/456")).tostr().unwrap(), p.parsedot().unwrap().tostr().unwrap()); } None => { asserteq!(Path::join(Path::new("/"), Path::new("path/to/123/456")).tostr().unwrap(), p.parsedot().unwrap().to_str().unwrap()); } } ```
Besides starting with, the Single Dot and Double Dots can also be placed to other positions. Single Dot means noting and will be ignored. Double Dots means the parent.
```rust extern crate path_dedot;
use std::path::Path;
use path_dedot::*;
let p = Path::new("/path/to/../123/456/./777");
asserteq!("/path/123/456/777", p.parsedot().unwrap().to_str().unwrap()); ```
```rust extern crate path_dedot;
use std::path::Path;
use path_dedot::*;
let p = Path::new("/path/to/../123/456/./777/..");
asserteq!("/path/123/456", p.parsedot().unwrap().to_str().unwrap()); ```
You should notice that parse_dot
method does not aim to get an absolute path. For those paths which do not start with /, Single Dot and Double Dots are still do not have each of them after the parse_dot
method is used.
```rust extern crate path_dedot;
use std::path::Path;
use path_dedot::*;
let p = Path::new("path/to/../123/456/./777/..");
asserteq!("path/123/456", p.parsedot().unwrap().to_str().unwrap()); ```
Double Dots which is not placed at the start cannot get the parent beyond the original path. Why not? With this constraint, you can insert an absolute path to the start as a virtual root in order to protect your file system from being exposed.
```rust extern crate path_dedot;
use std::path::Path;
use path_dedot::*;
let p = Path::new("path/to/../../../../123/456/./777/..");
asserteq!("123/456", p.parsedot().unwrap().to_str().unwrap()); ```
```rust extern crate path_dedot;
use std::path::Path;
use path_dedot::*;
let p = Path::new("/path/to/../../../../123/456/./777/..");
asserteq!("/123/456", p.parsedot().unwrap().to_str().unwrap()); ```
https://crates.io/crates/path-dedot
https://docs.rs/path-dedot