76 lines
2.4 KiB
Rust
76 lines
2.4 KiB
Rust
use core::fmt;
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use alloc::{borrow::ToOwned, string::ToString};
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use crate::{lowercase, transform};
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/// This trait defines a kebab case conversion.
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///
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/// In kebab-case, word boundaries are indicated by hyphens.
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///
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/// ## Example:
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///
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/// ```rust
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/// use heck::ToKebabCase;
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///
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/// let sentence = "We are going to inherit the earth.";
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/// assert_eq!(sentence.to_kebab_case(), "we-are-going-to-inherit-the-earth");
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/// ```
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pub trait ToKebabCase: ToOwned {
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/// Convert this type to kebab case.
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fn to_kebab_case(&self) -> Self::Owned;
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}
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impl ToKebabCase for str {
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fn to_kebab_case(&self) -> Self::Owned {
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AsKebabCase(self).to_string()
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}
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}
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/// This wrapper performs a kebab case conversion in [`fmt::Display`].
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///
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/// ## Example:
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///
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/// ```
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/// use heck::AsKebabCase;
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///
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/// let sentence = "We are going to inherit the earth.";
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/// assert_eq!(format!("{}", AsKebabCase(sentence)), "we-are-going-to-inherit-the-earth");
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/// ```
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pub struct AsKebabCase<T: AsRef<str>>(pub T);
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impl<T: AsRef<str>> fmt::Display for AsKebabCase<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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transform(self.0.as_ref(), lowercase, |f| write!(f, "-"), f)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::ToKebabCase;
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macro_rules! t {
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($t:ident : $s1:expr => $s2:expr) => {
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#[test]
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fn $t() {
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assert_eq!($s1.to_kebab_case(), $s2)
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}
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};
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}
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t!(test1: "CamelCase" => "camel-case");
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t!(test2: "This is Human case." => "this-is-human-case");
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t!(test3: "MixedUP CamelCase, with some Spaces" => "mixed-up-camel-case-with-some-spaces");
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t!(test4: "mixed_up_ snake_case with some _spaces" => "mixed-up-snake-case-with-some-spaces");
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t!(test5: "kebab-case" => "kebab-case");
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t!(test6: "SHOUTY_SNAKE_CASE" => "shouty-snake-case");
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t!(test7: "snake_case" => "snake-case");
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t!(test8: "this-contains_ ALLKinds OfWord_Boundaries" => "this-contains-all-kinds-of-word-boundaries");
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t!(test9: "XΣXΣ baffle" => "xσxς-baffle");
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t!(test10: "XMLHttpRequest" => "xml-http-request");
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t!(test11: "لِنَذْهَبْ إِلَى السِّيْنَمَا" => "لِنَذْهَبْ-إِلَى-السِّيْنَمَا");
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// Japanese and Chinese do not have word separation.
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t!(test12: "ファイルを読み込み" => "ファイルを読み込み");
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t!(test13: "祝你一天过得愉快" => "祝你一天过得愉快");
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}
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