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/*
SPDX-FileCopyrightText: 2017-2022 Krusader Krew <https://krusader.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "sizecalculator.h"
// QtCore
#include <QDebug>
#include <QTimer>
#include <KIO/StatJob>
#include "fileitem.h"
#include "virtualfilesystem.h"
SizeCalculator::SizeCalculator(const QList<QUrl> &urls)
: QObject(nullptr)
, m_urls(urls)
, m_nextUrls(urls)
, m_totalSize(0)
, m_totalFiles(0)
, m_totalDirs(0)
, m_canceled(false)
, m_directorySizeJob(nullptr)
{
QTimer::singleShot(0, this, &SizeCalculator::start);
}
SizeCalculator::~SizeCalculator()
{
if (m_directorySizeJob)
m_directorySizeJob->kill();
}
void SizeCalculator::start()
{
emit started();
nextUrl();
}
void SizeCalculator::add(const QUrl &url)
{
m_urls.append(url);
m_nextUrls.append(url);
emitProgress();
}
KIO::filesize_t SizeCalculator::totalSize() const
{
return m_totalSize + (m_directorySizeJob ? m_directorySizeJob->totalSize() : 0);
}
unsigned long SizeCalculator::totalFiles() const
{
return m_totalFiles + (m_directorySizeJob ? m_directorySizeJob->totalFiles() : 0);
}
unsigned long SizeCalculator::totalDirs() const
{
return m_totalDirs + (m_directorySizeJob ? m_directorySizeJob->totalSubdirs() : 0);
}
void SizeCalculator::cancel()
{
m_canceled = true;
if (m_directorySizeJob)
m_directorySizeJob->kill();
done();
}
void SizeCalculator::nextUrl()
{
if (m_canceled)
return;
emitProgress();
if (!m_currentUrl.isEmpty())
emit calculated(m_currentUrl, m_currentUrlSize);
m_currentUrlSize = 0;
if (m_nextUrls.isEmpty()) {
done();
return;
}
m_currentUrl = m_nextUrls.takeFirst();
if (m_currentUrl.scheme() == "virt") {
// calculate size of all files/directories in this virtual directory
auto *fs = new VirtualFileSystem();
if (!fs->scanDir(m_currentUrl)) {
qWarning() << "cannot scan virtual FS, URL=" << m_currentUrl.toDisplayString();
nextUrl();
return;
}
const QList<FileItem *> fileItems = fs->fileItems();
for (FileItem *file : fileItems)
m_nextSubUrls << file->getUrl();
delete fs;
} else {
m_nextSubUrls << m_currentUrl;
}
nextSubUrl();
}
void SizeCalculator::nextSubUrl()
{
if (m_canceled)
return;
if (m_nextSubUrls.isEmpty()) {
nextUrl();
return;
}
const QUrl url = m_nextSubUrls.takeFirst();
KIO::StatJob *statJob = KIO::stat(url, KIO::HideProgressInfo);
connect(statJob, &KIO::Job::result, this, &SizeCalculator::slotStatResult);
}
void SizeCalculator::slotStatResult(KJob *job)
{
if (m_canceled)
return;
if (job->error()) {
qWarning() << "stat job failed, error=" << job->error() << "; error string=" << job->errorString();
nextSubUrl();
return;
}
const KIO::StatJob *statJob = dynamic_cast<KIO::StatJob *>(job);
const QUrl &url = statJob->url();
const KFileItem kfi(statJob->statResult(), url, true);
if (kfi.isFile() || kfi.isLink()) {
m_totalFiles++;
m_totalSize += kfi.size();
m_currentUrlSize += kfi.size();
nextSubUrl();
return;
}
// URL should be a directory, we are always counting the directory itself
m_totalDirs++;
m_directorySizeJob = KIO::directorySize(url);
connect(m_directorySizeJob.data(), &KIO::Job::result, this, &SizeCalculator::slotDirectorySizeResult);
}
void SizeCalculator::slotDirectorySizeResult(KJob *)
{
if (!m_directorySizeJob->error()) {
m_totalSize += m_directorySizeJob->totalSize();
// do not count filesystem size of empty directories for this current directory
m_currentUrlSize += m_directorySizeJob->totalFiles() == 0 ? 0 : m_directorySizeJob->totalSize();
m_totalFiles += m_directorySizeJob->totalFiles();
m_totalDirs += m_directorySizeJob->totalSubdirs();
}
m_directorySizeJob = nullptr;
nextSubUrl();
}
void SizeCalculator::done()
{
emit finished(m_canceled);
deleteLater();
}
void SizeCalculator::emitProgress()
{
emit progressChanged(static_cast<int>(((m_urls.length() - m_nextUrls.length()) * 100) / m_urls.length()));
}
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