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The slugify function is used to convert input into URL-friendly slugs. It processes each character in the input, keeping ascii alpha characters after lowercase and replacing non-alphanum characters with the glue character or a space if multiple spaces are encountered consecutively. The resulting string is trimmed of leading and trailing whitespace, and any internal whitespace is replaced with the glue character. It is currently used in LibMarkdown headings generation code.
34 lines
952 B
C++
34 lines
952 B
C++
/*
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* Copyright (c) 2023, Gurkirat Singh <tbhaxor@gmail.com>
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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/Slugify.h>
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#include <AK/StringView.h>
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namespace AK {
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ErrorOr<String> slugify(String const& input, char const glue)
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{
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StringBuilder sb;
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bool just_processed_space = false;
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for (auto const& code_point : input.code_points()) {
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if (is_ascii_alphanumeric(code_point)) {
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sb.append_code_point(to_ascii_lowercase(code_point));
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just_processed_space = false;
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} else if ((code_point == static_cast<u32>(glue) || is_ascii_space(code_point)) && !just_processed_space) {
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sb.append_code_point(glue);
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just_processed_space = true;
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}
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}
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auto output = TRY(sb.to_string());
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if (output.ends_with(static_cast<u32>(glue))) {
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return output.trim(StringView { &glue, 1 }, TrimMode::Right);
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}
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return output;
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}
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}
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