File indexing completed on 2023-09-24 04:08:30

 /*
     This file is part of the KDE libraries
     SPDX-FileCopyrightText: 2000, 2006 David Faure <faure@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "directorysizejob.h"
 #include "global.h"
 #include "listjob.h"
 #include <QDebug>
 #include <QTimer>
 #include <kio/jobuidelegatefactory.h>
 
 #include "job_p.h"
 
 #include <set>
 
 namespace KIO
 {
 class DirectorySizeJobPrivate : public KIO::JobPrivate
 {
 public:
     DirectorySizeJobPrivate()
         : m_totalSize(0L)
         , m_totalFiles(0L)
         , m_totalSubdirs(0L)
         , m_currentItem(0)
     {
     }
     explicit DirectorySizeJobPrivate(const KFileItemList &lstItems)
         : m_totalSize(0L)
         , m_totalFiles(0L)
         , m_totalSubdirs(0L)
         , m_lstItems(lstItems)
         , m_currentItem(0)
     {
     }
     KIO::filesize_t m_totalSize;
     KIO::filesize_t m_totalFiles;
     KIO::filesize_t m_totalSubdirs;
     KFileItemList m_lstItems;
     int m_currentItem;
     QHash<long, std::set<long>> m_visitedInodes; // device -> set of inodes
 
     void startNextJob(const QUrl &url);
     void slotEntries(KIO::Job *, const KIO::UDSEntryList &);
     void processNextItem();
 
     Q_DECLARE_PUBLIC(DirectorySizeJob)
 
     static inline DirectorySizeJob *newJob(const QUrl &directory)
     {
         DirectorySizeJobPrivate *d = new DirectorySizeJobPrivate;
         DirectorySizeJob *job = new DirectorySizeJob(*d);
         job->setUiDelegate(KIO::createDefaultJobUiDelegate());
         d->startNextJob(directory);
         return job;
     }
 
     static inline DirectorySizeJob *newJob(const KFileItemList &lstItems)
     {
         DirectorySizeJobPrivate *d = new DirectorySizeJobPrivate(lstItems);
         DirectorySizeJob *job = new DirectorySizeJob(*d);
         job->setUiDelegate(KIO::createDefaultJobUiDelegate());
         QTimer::singleShot(0, job, [d]() {
             d->processNextItem();
         });
         return job;
     }
 };
 
 } // namespace KIO
 
 using namespace KIO;
 
 DirectorySizeJob::DirectorySizeJob(DirectorySizeJobPrivate &dd)
     : KIO::Job(dd)
 {
 }
 
 DirectorySizeJob::~DirectorySizeJob()
 {
 }
 
 KIO::filesize_t DirectorySizeJob::totalSize() const
 {
     return d_func()->m_totalSize;
 }
 
 KIO::filesize_t DirectorySizeJob::totalFiles() const
 {
     return d_func()->m_totalFiles;
 }
 
 KIO::filesize_t DirectorySizeJob::totalSubdirs() const
 {
     return d_func()->m_totalSubdirs;
 }
 
 void DirectorySizeJobPrivate::processNextItem()
 {
     Q_Q(DirectorySizeJob);
     while (m_currentItem < m_lstItems.count()) {
         const KFileItem item = m_lstItems[m_currentItem++];
         // qDebug() << item;
         if (!item.isLink()) {
             if (item.isDir()) {
                 // qDebug() << "dir -> listing";
                 startNextJob(item.targetUrl());
                 return; // we'll come back later, when this one's finished
             } else {
                 m_totalSize += item.size();
                 m_totalFiles++;
                 // qDebug() << "file -> " << m_totalSize;
             }
         } else {
             m_totalFiles++;
         }
     }
     // qDebug() << "finished";
     q->emitResult();
 }
 
 void DirectorySizeJobPrivate::startNextJob(const QUrl &url)
 {
     Q_Q(DirectorySizeJob);
     // qDebug() << url;
     KIO::ListJob *listJob = KIO::listRecursive(url, KIO::HideProgressInfo);
 #if KIOCORE_BUILD_DEPRECATED_SINCE(5, 69)
     // TODO KF6: remove legacy details code path
     listJob->addMetaData(QStringLiteral("details"), QStringLiteral("3"));
 #endif
     listJob->addMetaData(QStringLiteral("statDetails"), QString::number(KIO::StatBasic | KIO::StatResolveSymlink | KIO::StatInode));
     q->connect(listJob, &KIO::ListJob::entries, q, [this](KIO::Job *job, const KIO::UDSEntryList &list) {
         slotEntries(job, list);
     });
     q->addSubjob(listJob);
 }
 
 void DirectorySizeJobPrivate::slotEntries(KIO::Job *, const KIO::UDSEntryList &list)
 {
     KIO::UDSEntryList::ConstIterator it = list.begin();
     const KIO::UDSEntryList::ConstIterator end = list.end();
     for (; it != end; ++it) {
         const KIO::UDSEntry &entry = *it;
 
         const long device = entry.numberValue(KIO::UDSEntry::UDS_DEVICE_ID, 0);
         if (device && !entry.isLink()) {
             // Hard-link detection (#67939)
             const long inode = entry.numberValue(KIO::UDSEntry::UDS_INODE, 0);
             std::set<long> &visitedInodes = m_visitedInodes[device]; // find or insert
             const auto [it, isNewInode] = visitedInodes.insert(inode);
             if (!isNewInode) {
                 continue;
             }
         }
         const KIO::filesize_t size = entry.numberValue(KIO::UDSEntry::UDS_SIZE, 0);
         const QString name = entry.stringValue(KIO::UDSEntry::UDS_NAME);
         if (name == QLatin1Char('.')) {
             m_totalSize += size;
             // qDebug() << "'.': added" << size << "->" << m_totalSize;
         } else if (name != QLatin1String("..")) {
             if (!entry.isLink()) {
                 m_totalSize += size;
             }
             if (!entry.isDir()) {
                 m_totalFiles++;
             } else {
                 m_totalSubdirs++;
             }
             // qDebug() << name << ":" << size << "->" << m_totalSize;
         }
     }
 }
 
 void DirectorySizeJob::slotResult(KJob *job)
 {
     Q_D(DirectorySizeJob);
     // qDebug() << d->m_totalSize;
     removeSubjob(job);
     if (d->m_currentItem < d->m_lstItems.count()) {
         d->processNextItem();
     } else {
         if (job->error()) {
             setError(job->error());
             setErrorText(job->errorText());
         }
         emitResult();
     }
 }
 
 // static
 DirectorySizeJob *KIO::directorySize(const QUrl &directory)
 {
     return DirectorySizeJobPrivate::newJob(directory); // useless - but consistent with other jobs
 }
 
 // static
 DirectorySizeJob *KIO::directorySize(const KFileItemList &lstItems)
 {
     return DirectorySizeJobPrivate::newJob(lstItems);
 }
 
 #include "moc_directorysizejob.cpp"