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
34
35
36
37
38
39
40
41
42
43
44
45
46
47
/// Converts string to snake case.
///
/// # Arguments
///
/// * `s` - The string to convert.
///
/// # Returns
///
/// Returns the snake cased string.
///
/// # Examples
///
/// ```
/// use rufl::string;
///
/// assert_eq!("foo_bar", string::snake_case("Foo Bar"));
///
/// assert_eq!("foo_bar", string::snake_case("fooBar".to_string()));
///
/// assert_eq!("foo_bar", string::snake_case("__FOO_BAR__"));
///
/// ```
pub fn snake_case(s: impl AsRef<str>) -> String {
match s.as_ref().len() {
0 => s.as_ref().to_string(),
_ => crate::string::split_words(s)
.into_iter()
.map(|item| item.to_lowercase())
.collect::<Vec<String>>()
.join("_"),
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_snake_case() {
assert_eq!("foo_bar", snake_case("Foo Bar"));
assert_eq!("foo_bar", snake_case("fooBar"));
assert_eq!("foo_bar", snake_case("__FOO_BAR__"));
assert_eq!("foo_bar_123", snake_case("foo-bar123"));
assert_eq!("foo_1_1_bar", snake_case("Foo-#1😄$_%^&*(1bar"));
}
}