Expand description
§Path Calculate
This is a library help you to calculate with Path
or PathBuf
, such as get absolute path, get the relate root or the relative path between two pathes, get the ‘~’(home_dir) if it exist.
This is based on path_absolutize library, I’ve use as_absolute_path
replace the row absolutize
, because it do not support ‘~’ which is use recently, at least in UNIX System.
The following examples show the usage about this crate.
§Examples
There are some methods you can use.
§home_dir
Get the current user’s HOME if it exist in your env, or it return an error(I’m lazy, so just put this method in the Calculate trait).
extern crate path_calculate;
use std::path::Path;
use path_calculate::*;
let p = Path::new("/tmp");
if let Ok(home_dir) = p.home_dir() {
println!("Home path: {:?}", home_dir);
}
§as_absolute_path
This is almost like a shadow of the absolutize
in path-absolutize
, I only add ~
($HOME) support in the method(Unix or Windnows).
extern crate path_calculate;
use std::path::Path;
use path_calculate::*;
// If u have $HOME, test `~` support
let p = Path::new("./whatever");
if let Ok(home_dir) = p.home_dir() {
let p = Path::new("~");
assert_eq!(home_dir.to_str().unwrap(), p.as_absolute_path().unwrap().to_str().unwrap());
}
let p2 = Path::new("/tmp/a/b/c/../../e/f");
assert_eq!("/tmp/a/e/f", p2.as_absolute_path().unwrap().to_str().unwrap());
§relative_root_with
Sometimes I would use the relative root of pathes, it return an absolutize relative_root path.
Behold, in Windows, it can not calculate the relative_root on different disks(C:\, D:\,,,), when you try to use this method it return an ioerror such as io::ErrorKind::InvalidInput
.
extern crate path_calculate;
use std::path::Path;
use path_calculate::*;
let p1 = Path::new("/home/gits/mkisos");
let p2 = Path::new("/home/cc/trash");
let relative_root = p1.relative_root_with(&p2);
assert_eq!("/home", relative_root.unwrap().to_str().unwrap())
extern crate path_calculate;
use std::io::ErrorKind;
use std::path::Path;
use path_calculate::*;
// Pass Test when in Unix
if cfg!(target_os = "windows") {
// Windows ok
let d1 = Path::new("D:\\Games\\Videos\\Replays");
let d2 = Path::new("D:\\Games\\Dota2");
assert_eq!("D:\\Games", d1.relative_root_with(&d2).unwrap().to_str().unwrap());
// Windows err
let c1 = Path::new("~");
assert_eq!(ErrorKind::InvalidInput, c1.relative_root_with(&d1).unwrap_err().kind());
}
§related_to
This method is used to calculate the dst_path’s relative path from the src_path.
extern crate path_calculate;
use std::path::Path;
use path_calculate::*;
// $HOME="/home/chao"
let dst_path = Path::new("/home/chao/works/demo/src");
let src_path = Path::new("/home/chao/trash");
assert_eq!("../works/demo/src", dst_path.related_to(&src_path).unwrap().to_str().unwrap());
Re-exports§
pub extern crate path_absolutize;
pub use calculate::*;