accepted 0.2.0

A text editor to be ACCEPTED.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

use ropey::{Rope, RopeSlice};

pub trait RopeSliceExt {
    fn trim_end(self) -> Self;
}

pub trait RopeExt {
    fn l(&self, line_idx: usize) -> RopeSlice;
}

pub fn is_line_end(c: char) -> bool {
    [
        '\u{000a}', '\u{000b}', '\u{000c}', '\u{000d}', '\u{0085}', '\u{2028}', '\u{2029}',
    ]
    .contains(&c)
}

impl<'a> RopeSliceExt for RopeSlice<'a> {
    fn trim_end(self) -> Self {
        let mut i = self.len_chars();
        while i > 0 && is_line_end(self.char(i - 1)) {
            i -= 1;
        }

        self.slice(..i)
    }
}

impl RopeExt for Rope {
    fn l(&self, line_idx: usize) -> RopeSlice {
        self.line(line_idx).trim_end()
    }
}