| use std::fmt; |
| |
| use crate::{transform, uppercase}; |
| |
| /// This trait defines a shouty kebab case conversion. |
| /// |
| /// In SHOUTY-KEBAB-CASE, word boundaries are indicated by hyphens and all |
| /// words are in uppercase. |
| /// |
| /// ## Example: |
| /// |
| /// ```rust |
| /// use heck::ToShoutyKebabCase; |
| /// |
| /// let sentence = "We are going to inherit the earth."; |
| /// assert_eq!(sentence.to_shouty_kebab_case(), "WE-ARE-GOING-TO-INHERIT-THE-EARTH"); |
| /// ``` |
| pub trait ToShoutyKebabCase: ToOwned { |
| /// Convert this type to shouty kebab case. |
| fn to_shouty_kebab_case(&self) -> Self::Owned; |
| } |
| |
| impl ToShoutyKebabCase for str { |
| fn to_shouty_kebab_case(&self) -> Self::Owned { |
| AsShoutyKebabCase(self).to_string() |
| } |
| } |
| |
| /// This wrapper performs a kebab case conversion in [`fmt::Display`]. |
| /// |
| /// ## Example: |
| /// |
| /// ``` |
| /// use heck::AsShoutyKebabCase; |
| /// |
| /// let sentence = "We are going to inherit the earth."; |
| /// assert_eq!(format!("{}", AsShoutyKebabCase(sentence)), "WE-ARE-GOING-TO-INHERIT-THE-EARTH"); |
| /// ``` |
| pub struct AsShoutyKebabCase<T: AsRef<str>>(pub T); |
| |
| impl<T: AsRef<str>> fmt::Display for AsShoutyKebabCase<T> { |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { |
| transform(self.0.as_ref(), uppercase, |f| write!(f, "-"), f) |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use super::ToShoutyKebabCase; |
| |
| macro_rules! t { |
| ($t:ident : $s1:expr => $s2:expr) => { |
| #[test] |
| fn $t() { |
| assert_eq!($s1.to_shouty_kebab_case(), $s2) |
| } |
| }; |
| } |
| |
| t!(test1: "CamelCase" => "CAMEL-CASE"); |
| t!(test2: "This is Human case." => "THIS-IS-HUMAN-CASE"); |
| t!(test3: "MixedUP CamelCase, with some Spaces" => "MIXED-UP-CAMEL-CASE-WITH-SOME-SPACES"); |
| t!(test4: "mixed_up_ snake_case with some _spaces" => "MIXED-UP-SNAKE-CASE-WITH-SOME-SPACES"); |
| t!(test5: "kebab-case" => "KEBAB-CASE"); |
| t!(test6: "SHOUTY_SNAKE_CASE" => "SHOUTY-SNAKE-CASE"); |
| t!(test7: "snake_case" => "SNAKE-CASE"); |
| t!(test8: "this-contains_ ALLKinds OfWord_Boundaries" => "THIS-CONTAINS-ALL-KINDS-OF-WORD-BOUNDARIES"); |
| #[cfg(feature = "unicode")] |
| t!(test9: "XΣXΣ baffle" => "XΣXΣ-BAFFLE"); |
| t!(test10: "XMLHttpRequest" => "XML-HTTP-REQUEST"); |
| t!(test11: "SHOUTY-KEBAB-CASE" => "SHOUTY-KEBAB-CASE"); |
| } |