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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "filesignificancecheck.h"
#include <mutex>
QT_BEGIN_NAMESPACE
FileSignificanceCheck *FileSignificanceCheck::m_instance = nullptr;
void FileSignificanceCheck::setRootDirectories(const QStringList &paths)
{
const size_t pathsSize = static_cast<size_t>(paths.size());
m_rootDirs.resize(pathsSize);
for (size_t i = 0; i < pathsSize; ++i)
m_rootDirs[i].setPath(paths.at(i));
}
void FileSignificanceCheck::setExclusionPatterns(const QStringList &patterns)
{
const size_t patternsSize = static_cast<size_t>(patterns.size());
m_exclusionRegExes.resize(patternsSize);
for (size_t i = 0; i < patternsSize; ++i)
m_exclusionRegExes[i] = QRegularExpression::fromWildcard(patterns.at(i));
}
/*
* Return true if the given source file is significant for lupdate.
* A file is considered insignificant if
* - it's not within any project root
* - it's excluded
*
* This method is called from multiple threads.
* Results are cached.
*/
bool FileSignificanceCheck::isFileSignificant(const std::string &filePath) const
{
// cache lookup
std::shared_lock<std::shared_mutex> readLock(m_cacheMutex);
auto it = m_cache.find(filePath);
if (it != m_cache.end())
return it->second;
// cache miss
readLock.unlock();
std::unique_lock<std::shared_mutex> writeLock(m_cacheMutex);
QString file = QString::fromUtf8(filePath);
QString cleanFile = QDir::cleanPath(file);
for (const QRegularExpression &rx : m_exclusionRegExes) {
if (rx.match(cleanFile).hasMatch()) {
m_cache.insert({filePath, false});
return false;
}
}
for (const QDir &rootDir : m_rootDirs) {
QString relativeFilePath = rootDir.relativeFilePath(file);
if (!relativeFilePath.startsWith(QLatin1String("../"))
&& QFileInfo(relativeFilePath).isRelative()) {
m_cache.insert({filePath, true});
return true;
}
}
m_cache.insert({filePath, false});
return false;
}
QT_END_NAMESPACE
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