str_utils/
ends_with_ignore_case.rs

1use crate::{ToLowercase, ToUppercase};
2
3/// To extend `str` to have a `ends_with_ignore_case` method.
4pub trait EndsWithIgnoreCase {
5    /// Returns `true` if the given string slice case-insensitively (using case-folding) matches a suffix of this string slice.
6    ///
7    /// NOTE: This method may allocate heap memory.
8    fn ends_with_ignore_case<S: AsRef<str>>(&self, b: S) -> bool;
9}
10
11impl EndsWithIgnoreCase for str {
12    #[inline]
13    fn ends_with_ignore_case<S: AsRef<str>>(&self, b: S) -> bool {
14        let a = self;
15        let b = b.as_ref();
16
17        if b.is_empty() {
18            return true;
19        }
20
21        {
22            let au = a.to_uppercase_cow();
23            let bu = b.to_uppercase_cow();
24
25            if au.as_bytes().ends_with(bu.as_bytes()) {
26                return true;
27            }
28        }
29
30        let al = a.to_lowercase_cow();
31        let bl = b.to_lowercase_cow();
32
33        al.as_bytes().ends_with(bl.as_bytes())
34    }
35}
str_utils/ends_with_ignore_case.rs

str_utils/
ends_with_ignore_case.rs
