| 1 | // Copyright (C) 2022 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0 |
| 3 | |
| 4 | #include "filesignificancecheck.h" |
| 5 | |
| 6 | #include <mutex> |
| 7 | |
| 8 | QT_BEGIN_NAMESPACE |
| 9 | |
| 10 | FileSignificanceCheck *FileSignificanceCheck::m_instance = nullptr; |
| 11 | |
| 12 | void FileSignificanceCheck::setRootDirectories(const QStringList &paths) |
| 13 | { |
| 14 | const size_t pathsSize = static_cast<size_t>(paths.size()); |
| 15 | m_rootDirs.resize(new_size: pathsSize); |
| 16 | for (size_t i = 0; i < pathsSize; ++i) |
| 17 | m_rootDirs[i].setPath(paths.at(i)); |
| 18 | } |
| 19 | |
| 20 | void FileSignificanceCheck::setExclusionPatterns(const QStringList &patterns) |
| 21 | { |
| 22 | const size_t patternsSize = static_cast<size_t>(patterns.size()); |
| 23 | m_exclusionRegExes.resize(new_size: patternsSize); |
| 24 | for (size_t i = 0; i < patternsSize; ++i) |
| 25 | m_exclusionRegExes[i] = QRegularExpression::fromWildcard(pattern: patterns.at(i)); |
| 26 | } |
| 27 | |
| 28 | /* |
| 29 | * Return true if the given source file is significant for lupdate. |
| 30 | * A file is considered insignificant if |
| 31 | * - it's not within any project root |
| 32 | * - it's excluded |
| 33 | * |
| 34 | * This method is called from multiple threads. |
| 35 | * Results are cached. |
| 36 | */ |
| 37 | bool FileSignificanceCheck::isFileSignificant(const std::string &filePath) const |
| 38 | { |
| 39 | // cache lookup |
| 40 | std::shared_lock<std::shared_mutex> readLock(m_cacheMutex); |
| 41 | auto it = m_cache.find(x: filePath); |
| 42 | if (it != m_cache.end()) |
| 43 | return it->second; |
| 44 | |
| 45 | // cache miss |
| 46 | readLock.unlock(); |
| 47 | std::unique_lock<std::shared_mutex> writeLock(m_cacheMutex); |
| 48 | QString file = QString::fromUtf8(utf8: filePath); |
| 49 | QString cleanFile = QDir::cleanPath(path: file); |
| 50 | for (const QRegularExpression &rx : m_exclusionRegExes) { |
| 51 | if (rx.match(subject: cleanFile).hasMatch()) { |
| 52 | m_cache.insert(x: {filePath, false}); |
| 53 | return false; |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | for (const QDir &rootDir : m_rootDirs) { |
| 58 | QString relativeFilePath = rootDir.relativeFilePath(fileName: file); |
| 59 | if (!relativeFilePath.startsWith(s: QLatin1String("../")) |
| 60 | && QFileInfo(relativeFilePath).isRelative()) { |
| 61 | m_cache.insert(x: {filePath, true}); |
| 62 | return true; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | m_cache.insert(x: {filePath, false}); |
| 67 | return false; |
| 68 | } |
| 69 | |
| 70 | QT_END_NAMESPACE |
| 71 |