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/*
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "TextExtractionURLCache.h"
namespace WebKit {
void TextExtractionURLCache::clear()
{
m_shortenedStringToURLMap.clear();
m_urlToShortenedStringMap.clear();
m_shortenedStringCounts.clear();
}
String TextExtractionURLCache::add(const String& shortenedString, const URL& originalURL, ExtractedURLType type)
{
if (shortenedString.isEmpty() || originalURL.isEmpty())
return shortenedString;
if (auto existingString = m_urlToShortenedStringMap.get(originalURL); !existingString.isEmpty())
return existingString;
auto addSuffix = [&](StringView string, unsigned suffix) {
auto fullStopIndex = string.reverseFind('.');
if (isASCIIDigit(string[string.length() - 1]))
return makeString(string, '-', suffix);
if (type == ExtractedURLType::Link) {
auto slashIndex = string.reverseFind('/');
if ((slashIndex == notFound) || (fullStopIndex != notFound && slashIndex > fullStopIndex))
return makeString(string, suffix);
}
if (fullStopIndex == notFound)
return makeString(string, suffix);
if (fullStopIndex && isASCIIDigit(string[fullStopIndex - 1]))
return makeString(string.left(fullStopIndex), '-', suffix, string.right(string.length() - fullStopIndex));
return makeString(string.left(fullStopIndex), suffix, string.right(string.length() - fullStopIndex));
};
m_shortenedStringCounts.add(shortenedString);
if (auto addResult = m_shortenedStringToURLMap.add(shortenedString, originalURL); addResult.isNewEntry) {
m_urlToShortenedStringMap.set(originalURL, shortenedString);
return shortenedString;
}
auto count = m_shortenedStringCounts.count(shortenedString);
String newShortenedString;
do {
newShortenedString = addSuffix(shortenedString, count++);
} while (!m_shortenedStringToURLMap.add(newShortenedString, originalURL).isNewEntry);
m_urlToShortenedStringMap.add(originalURL, newShortenedString);
return newShortenedString;
}
URL TextExtractionURLCache::urlForShortenedString(const String& string) const
{
if (string.isEmpty())
return { };
return m_shortenedStringToURLMap.get(string);
}
} // namespace WebKit
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