| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | // Qt-Security score:significant reason:default |
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| 4 | |
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| 5 | #ifndef QFILESYSTEMWATCHER_POLLING_P_H |
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| 6 | #define QFILESYSTEMWATCHER_POLLING_P_H |
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| 7 | |
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| 8 | // |
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| 9 | // W A R N I N G |
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| 10 | // ------------- |
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| 11 | // |
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| 12 | // This file is not part of the Qt API. It exists purely as an |
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| 13 | // implementation detail. This header file may change from version to |
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| 14 | // version without notice, or even be removed. |
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| 15 | // |
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| 16 | // We mean it. |
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| 17 | // |
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| 18 | |
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| 19 | #include <QtCore/qbasictimer.h> |
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| 20 | #include <QtCore/qfileinfo.h> |
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| 21 | #include <QtCore/qmutex.h> |
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| 22 | #include <QtCore/qdatetime.h> |
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| 23 | #include <QtCore/qdir.h> |
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| 24 | #include <QtCore/qdirlisting.h> |
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| 25 | #include <QtCore/qhash.h> |
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| 26 | |
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| 27 | #include "qfilesystemwatcher_p.h" |
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| 28 | |
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| 29 | QT_REQUIRE_CONFIG(filesystemwatcher); |
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| 30 | QT_BEGIN_NAMESPACE |
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| 31 | |
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| 32 | class QPollingFileSystemWatcherEngine : public QFileSystemWatcherEngine |
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| 33 | { |
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| 34 | Q_OBJECT |
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| 35 | |
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| 36 | class FileInfo |
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| 37 | { |
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| 38 | uint ownerId; |
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| 39 | uint groupId; |
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| 40 | QFile::Permissions permissions; |
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| 41 | QDateTime lastModified; |
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| 42 | QStringList entries; |
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| 43 | |
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| 44 | static QStringList dirEntryList(const QFileInfo &fileInfo) |
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| 45 | { |
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| 46 | Q_ASSERT(fileInfo.isDir()); |
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| 47 | |
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| 48 | QStringList fileNames; |
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| 49 | using F = QDirListing::IteratorFlag; |
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| 50 | constexpr auto flags = F::ExcludeOther | F::IncludeDotAndDotDot; |
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| 51 | for (const auto &entry : QDirListing(fileInfo.absoluteFilePath(), flags)) |
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| 52 | fileNames.emplace_back(args: entry.fileName()); |
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| 53 | return fileNames; |
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| 54 | } |
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| 55 | |
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| 56 | public: |
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| 57 | FileInfo(const QFileInfo &fileInfo) |
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| 58 | : ownerId(fileInfo.ownerId()), |
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| 59 | groupId(fileInfo.groupId()), |
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| 60 | permissions(fileInfo.permissions()), |
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| 61 | lastModified(fileInfo.lastModified(tz: QTimeZone::UTC)) |
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| 62 | { |
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| 63 | if (fileInfo.isDir()) |
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| 64 | entries = dirEntryList(fileInfo); |
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| 65 | } |
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| 66 | FileInfo &operator=(const QFileInfo &fileInfo) |
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| 67 | { |
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| 68 | *this = FileInfo(fileInfo); |
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| 69 | return *this; |
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| 70 | } |
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| 71 | |
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| 72 | bool operator!=(const QFileInfo &fileInfo) const |
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| 73 | { |
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| 74 | if (fileInfo.isDir() && entries != dirEntryList(fileInfo)) |
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| 75 | return true; |
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| 76 | return (ownerId != fileInfo.ownerId() |
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| 77 | || groupId != fileInfo.groupId() |
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| 78 | || permissions != fileInfo.permissions() |
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| 79 | || lastModified != fileInfo.lastModified(tz: QTimeZone::UTC)); |
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| 80 | } |
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| 81 | }; |
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| 82 | |
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| 83 | QHash<QString, FileInfo> files, directories; |
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| 84 | |
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| 85 | public: |
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| 86 | QPollingFileSystemWatcherEngine(QObject *parent); |
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| 87 | |
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| 88 | QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories) override; |
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| 89 | QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories) override; |
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| 90 | |
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| 91 | private: |
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| 92 | void timerEvent(QTimerEvent *) final; |
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| 93 | |
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| 94 | private: |
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| 95 | QBasicTimer timer; |
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| 96 | }; |
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| 97 | |
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| 98 | QT_END_NAMESPACE |
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| 99 | #endif // QFILESYSTEMWATCHER_POLLING_P_H |
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| 100 | |
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| 101 | |
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