mirror of
https://github.com/RGBCube/serenity
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507dea5fdd
This currently holds a helper to create a new string which collapses all consecutive whitespace to a single ASCII space.
55 lines
1.4 KiB
Text
55 lines
1.4 KiB
Text
/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/CharacterTypes.h>
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#include <AK/StringView.h>
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#include <AK/Utf8View.h>
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#include <LibUnicode/CharacterTypes.h>
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#import <Utilities/Conversions.h>
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#import <Utilities/NSString+Ladybird.h>
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static BOOL code_point_is_whitespace(u32 code_point)
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{
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static auto white_space_category = Unicode::property_from_string("White_Space"sv);
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if (!white_space_category.has_value())
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return is_ascii_space(code_point);
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return Unicode::code_point_has_property(code_point, *white_space_category);
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}
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@implementation NSString (Ladybird)
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- (NSString*)stringByCollapsingConsecutiveWhitespace
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{
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auto* result = [NSMutableString string];
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auto const* string = [self UTF8String];
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Utf8View code_points { StringView { string, strlen(string) } };
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bool currently_skipping_spaces = false;
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for (auto code_point : code_points) {
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if (code_point_is_whitespace(code_point)) {
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if (!currently_skipping_spaces) {
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currently_skipping_spaces = true;
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[result appendString:@" "];
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}
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continue;
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}
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auto code_point_string = String::from_code_point(code_point);
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[result appendString:Ladybird::string_to_ns_string(code_point_string)];
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currently_skipping_spaces = false;
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}
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return result;
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}
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@end
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