cobalt/cobalt_model/
slug.rs

1use std::sync::LazyLock;
2
3use deunicode;
4use itertools::Itertools;
5use regex::Regex;
6
7static SLUG_INVALID_CHARS: LazyLock<Regex> =
8    LazyLock::new(|| Regex::new(r"([^a-zA-Z0-9]+)").unwrap());
9
10/// Create a slug for a given file.  Correlates to Jekyll's :slug path tag
11pub fn slugify<S: AsRef<str>>(name: S) -> String {
12    slugify_str(name.as_ref())
13}
14
15fn slugify_str(name: &str) -> String {
16    let name = deunicode::deunicode_with_tofu(name, "-");
17    let slug = SLUG_INVALID_CHARS.replace_all(&name, "-");
18    slug.trim_matches('-').to_lowercase()
19}
20
21/// Title-case a single word
22fn title_case(s: &str) -> String {
23    let mut c = s.chars();
24    match c.next() {
25        None => String::new(),
26        Some(f) => f
27            .to_uppercase()
28            .chain(c.flat_map(|t| t.to_lowercase()))
29            .collect(),
30    }
31}
32
33/// Format a user-visible title out of a slug.  Correlates to Jekyll's "title" attribute
34pub fn titleize_slug<S: AsRef<str>>(slug: S) -> String {
35    titleize_slug_str(slug.as_ref())
36}
37
38fn titleize_slug_str(slug: &str) -> String {
39    slug.split('-').map(title_case).join(" ")
40}
41
42#[test]
43fn test_slugify() {
44    let actual = slugify("___filE-worldD-__09___");
45    assert_eq!(actual, "file-worldd-09");
46}
47
48#[test]
49fn test_slugify_unicode() {
50    let actual = slugify("__Æneid__北亰-worldD-__09___");
51    assert_eq!(actual, "aeneid-bei-jing-worldd-09");
52}
53
54#[test]
55fn test_titleize_slug() {
56    let actual = titleize_slug("tItLeIzE-sLuG");
57    assert_eq!(actual, "Titleize Slug");
58}
cobalt/cobalt_model/slug.rs

cobalt/cobalt_model/
slug.rs
