File indexing completed on 2024-04-21 03:51:40

 /*
     This file is part of the KDE Baloo Project
     SPDX-FileCopyrightText: 2015 Vishesh Handa <vhanda@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef BALOO_ID_UTILS_
 #define BALOO_ID_UTILS_
 
 #include <qplatformdefs.h>
 #include <qglobal.h>
 
 #ifdef Q_OS_WIN
 # include <QFileInfo>
 #else
 # include <sys/statvfs.h>
 #endif
 
 namespace Baloo {
 
 inline quint64 devIdAndInodeToId(quint32 devId, quint32 inode)
 {
     quint64 res;
     quint32 arr[2];
     arr[0] = devId;
     arr[1] = inode;
 
     memcpy(&res, arr, sizeof(arr));
     return res;
 }
 
 /**
  * Convert the QT_STATBUF into a 64 bit unique identifier for the file.
  * This identifier is combination of the device id and inode number.
  */
 inline quint64 statBufToId(const QT_STATBUF& stBuf)
 {
     // We're losing 32 bits of info, so this could potentially break
     // on file systems with really large inode and device ids
     return devIdAndInodeToId(static_cast<quint32>(stBuf.st_dev),
                              static_cast<quint32>(stBuf.st_ino));
 }
 
 #ifndef Q_OS_WIN
 inline int statWithFsid(const char* path, QT_STATBUF* statBuf)
 {
     int ret = QT_LSTAT(path, statBuf);
     if (ret != 0) {
         return ret;
     }
 
     struct statvfs fsBuf;
     ret = statvfs(path, &fsBuf);
     if (ret == 0 && fsBuf.f_fsid != 0) {
         // Fold FSID into 32 bits, statBufToId would discard anything else
         statBuf->st_dev = static_cast<quint32>(fsBuf.f_fsid ^ (fsBuf.f_fsid >> 32));
     }
     return ret;
 }
 #endif
 
 inline int filePathToStat(const QByteArray& filePath, QT_STATBUF& statBuf)
 {
 #ifndef Q_OS_WIN
     return statWithFsid(filePath.constData(), &statBuf);
 #else
     const int ret = QT_STAT(filePath.constData(), &statBuf);
     const QString filePathStr = QString::fromUtf8(filePath);
     if (ret == 0 && QFileInfo(filePathStr).isSymLink()) {
         return QT_STAT(QFileInfo(filePathStr).symLinkTarget().toUtf8().constData(), &statBuf);
     } else {
         return ret;
     }
 #endif
 }
 
 inline quint64 filePathToId(const QByteArray& filePath)
 {
     QT_STATBUF statBuf;
     const int ret = filePathToStat(filePath, statBuf);
     return ret ? 0 : statBufToId(statBuf);
 }
 
 inline quint32 idToInode(quint64 id)
 {
     quint32* arr = reinterpret_cast<quint32*>(&id);
     return arr[1];
 }
 
 inline quint32 idToDeviceId(quint64 id)
 {
     quint32* arr = reinterpret_cast<quint32*>(&id);
     return arr[0];
 }
 
 template<typename T, typename V>
 inline void sortedIdInsert(T& vec, const V& id)
 {
     /**
      * search with normal <
      */
     const auto i(std::lower_bound(vec.begin(), vec.end(), id));
 
     /**
      * end reached or element found smaller?
      * => insert new element!
      */
     if (i == vec.end() || (id != *i))
         vec.insert(i, id);
 }
 
 template<typename T, typename V>
 inline void sortedIdRemove(T& vec, const V& id)
 {
     const int idx = vec.indexOf(id);
     if (idx >= 0) {
         vec.remove(idx);
     }
 }
 
 }
 
 #endif