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AK+LibUnicode: Implement String::equals_ignoring_case without allocating

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We currently fully casefold the left- and right-hand sides to compare
two strings with case-insensitivity. Now, we casefold one code point at
a time, storing the result in a view for comparison, until we exhaust
both strings.
This commit is contained in:
Timothy Flynn 2023-03-08 13:03:04 -05:00 • committed by Linus Groh
parent 4aee4e80bd
commit 1393ed2000
6 changed files with 150 additions and 52 deletions
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2
AK/String.h
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@ -109,7 +109,7 @@ public:
ErrorOr<String> to_casefold() const;
// Compare this String against another string with caseless matching. Using this method requires linking LibUnicode into your application.
ErrorOr<bool> equals_ignoring_case(String const&) const;
[[nodiscard]] bool equals_ignoring_case(String const&) const;
[[nodiscard]] bool starts_with(u32 code_point) const;
[[nodiscard]] bool starts_with_bytes(StringView) const;