use std::fmt;
use crate::{capitalize, transform};
pub trait ToTitleCase: ToOwned {
fn to_title_case(&self) -> Self::Owned;
}
impl ToTitleCase for str {
fn to_title_case(&self) -> String {
AsTitleCase(self).to_string()
}
}
pub struct AsTitleCase<T: AsRef<str>>(pub T);
impl<T: AsRef<str>> fmt::Display for AsTitleCase<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
transform(self.0.as_ref(), capitalize, |f| write!(f, " "), f)
}
}
#[cfg(test)]
mod tests {
use super::ToTitleCase;
macro_rules! t {
($t:ident : $s1:expr => $s2:expr) => {
#[test]
fn $t() {
assert_eq!($s1.to_title_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");
}