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LibWeb: Implement ASCII case-insensitive matching

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While DeprecatedString and StringView use ASCII case-insensitivity when
matching, String uses the Unicode rules, so in order to match the spec,
we need to *not* use `String::equals_ignoring_case()`.

This function needs to be used everywhere that the spec refers to
an "ASCII case-insensitive match".
This commit is contained in:
Sam Atkins 2023-02-15 13:56:37 +00:00 • committed by Tim Flynn
parent 1453ac79e7
commit a419039bb2
2 changed files with 28 additions and 0 deletions
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2
Userland/Libraries/LibWeb/Infra/Strings.h
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@ -2,6 +2,7 @@
* Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2022, networkException <networkexception@serenityos.org>
* Copyright (c) 2023, Kenneth Myhra <kennethmyhra@serenityos.org>
* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -12,6 +13,7 @@
namespace Web::Infra {
bool is_ascii_case_insensitive_match(StringView a, StringView b);
DeprecatedString strip_and_collapse_whitespace(StringView string);
bool is_code_unit_prefix(StringView potential_prefix, StringView input);
ErrorOr<String> convert_to_scalar_value_string(StringView string);