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#[cfg(feature = "alloc")] use alloc::vec::Vec; /// Converts the given slice to its ASCII upper case equivalent in-place. /// /// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', but non-ASCII letters are /// unchanged. /// /// This function can be used to implement [`String#upcase!`] for ASCII strings /// in Ruby. /// /// To return a new uppercased value without modifying the existing one, use /// [`to_ascii_uppercase`]. /// /// See also [`<[u8]>::make_ascii_uppercase`][slice-primitive]. /// /// # Examples /// /// ``` /// # use roe::make_ascii_uppercase; /// let mut buf = *b"ABCxyz"; /// make_ascii_uppercase(&mut buf); /// assert_eq!(buf, *b"ABCXYZ"); /// /// let mut buf = *b"1234%&*"; /// make_ascii_uppercase(&mut buf); /// assert_eq!(buf, *b"1234%&*"); /// ``` /// /// [`String#upcase!`]: https://ruby-doc.org/core-2.6.3/String.html#method-i-upcase-21 /// [slice-primitive]: https://doc.rust-lang.org/std/primitive.u8.html#method.make_ascii_uppercase #[inline] #[allow(clippy::module_name_repetitions)] pub fn make_ascii_uppercase<T: AsMut<[u8]>>(slice: &mut T) { let slice = slice.as_mut(); slice.make_ascii_uppercase(); } /// Returns a vector containing a copy of the given slice where each byte is /// mapped to its ASCII upper case equivalent. /// /// ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', but non-ASCII letters are /// unchanged. /// /// This function can be used to implement [`String#upcase`] and /// [`Symbol#upcase`] for ASCII strings in Ruby. /// /// To uppercase the value in-place, use [`make_ascii_uppercase`]. /// /// See also [`<[u8]>::to_ascii_uppercase`][slice-primitive]. /// /// # Examples /// /// ``` /// # use roe::to_ascii_uppercase; /// assert_eq!(to_ascii_uppercase("ABCxyz"), &b"ABCXYZ"[..]); /// assert_eq!(to_ascii_uppercase("1234%&*"), &b"1234%&*"[..]); /// ``` /// /// [`String#upcase`]: https://ruby-doc.org/core-2.6.3/String.html#method-i-upcase /// [`Symbol#upcase`]: https://ruby-doc.org/core-2.6.3/Symbol.html#method-i-upcase /// [slice-primitive]: https://doc.rust-lang.org/std/primitive.slice.html#method.to_ascii_uppercase #[inline] #[cfg(feature = "alloc")] #[cfg_attr(docsrs, doc(cfg(feature = "alloc")))] #[allow(clippy::module_name_repetitions)] pub fn to_ascii_uppercase<T: AsRef<[u8]>>(slice: T) -> Vec<u8> { let slice = slice.as_ref(); slice.to_ascii_uppercase() } #[cfg(test)] mod tests { #[test] fn make_ascii_uppercase_empty() { let mut buf = *b""; super::make_ascii_uppercase(&mut buf); assert_eq!(buf, *b""); } #[test] #[cfg(feature = "alloc")] fn to_ascii_uppercase_empty() { assert_eq!(super::to_ascii_uppercase(""), b""); } }