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[diskusage] Add DiskUsage QML component
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/* | ||
* Copyright (C) 2015 Jolla Ltd. | ||
* Contact: Thomas Perl <thomas.perl@jolla.com> | ||
* | ||
* You may use this file under the terms of the BSD license as follows: | ||
* | ||
* "Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions are | ||
* met: | ||
* * Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* * Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in | ||
* the documentation and/or other materials provided with the | ||
* distribution. | ||
* * Neither the name of Nemo Mobile nor the names of its contributors | ||
* may be used to endorse or promote products derived from this | ||
* software without specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." | ||
*/ | ||
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#include "diskusage.h" | ||
#include "diskusage_p.h" | ||
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#include <QThread> | ||
#include <QDir> | ||
#include <QProcess> | ||
#include <QDebug> | ||
#include <QJSEngine> | ||
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DiskUsageWorker::DiskUsageWorker(QObject *parent) | ||
: QObject(parent) | ||
, m_quit(false) | ||
{ | ||
} | ||
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DiskUsageWorker::~DiskUsageWorker() | ||
{ | ||
} | ||
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static quint64 calculateSize(const QString &directory) | ||
{ | ||
QDir d(directory); | ||
if (!d.exists() || !d.isReadable()) { | ||
return 0L; | ||
} | ||
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QProcess du; | ||
du.start("du", QStringList() << "-sb" << directory, QIODevice::ReadOnly); | ||
du.waitForFinished(); | ||
if (du.exitStatus() != QProcess::NormalExit) { | ||
qWarning() << "Could not determine size of:" << directory; | ||
return 0L; | ||
} | ||
QStringList size_directory = QString::fromUtf8(du.readAll()).split('\t'); | ||
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if (size_directory.size() > 1) { | ||
return size_directory[0].toULongLong(); | ||
} | ||
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return 0L; | ||
} | ||
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void DiskUsageWorker::submit(QStringList paths, QJSValue *callback) | ||
{ | ||
QVariantMap usage; | ||
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foreach (const QString &path, paths) { | ||
usage[path] = calculateSize(path); | ||
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if (m_quit) { | ||
break; | ||
} | ||
} | ||
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for (QVariantMap::iterator it = usage.begin(); it != usage.end(); ++it) { | ||
const QString &path = it.key(); | ||
qlonglong bytes = it.value().toLongLong(); | ||
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for (QVariantMap::const_iterator it2 = usage.cbegin(); it2 != usage.cend(); ++it2) { | ||
const QString &subpath = it2.key(); | ||
const qlonglong subbytes = it2.value().toLongLong(); | ||
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if (subpath.length() > path.length() && subpath.indexOf(path) == 0) { | ||
bytes -= subbytes; | ||
} | ||
} | ||
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if (it.value() != bytes) { | ||
it.value() = bytes; | ||
} | ||
} | ||
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emit finished(usage, callback); | ||
} | ||
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class DiskUsagePrivate | ||
{ | ||
Q_DISABLE_COPY(DiskUsagePrivate) | ||
Q_DECLARE_PUBLIC(DiskUsage) | ||
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DiskUsage * const q_ptr; | ||
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public: | ||
DiskUsagePrivate(DiskUsage *usage); | ||
~DiskUsagePrivate(); | ||
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private: | ||
QThread m_thread; | ||
DiskUsageWorker *m_worker; | ||
}; | ||
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DiskUsagePrivate::DiskUsagePrivate(DiskUsage *usage) | ||
: q_ptr(usage) | ||
, m_thread() | ||
, m_worker(new DiskUsageWorker()) | ||
{ | ||
m_worker->moveToThread(&m_thread); | ||
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QObject::connect(usage, SIGNAL(submit(QStringList, QJSValue *)), | ||
m_worker, SLOT(submit(QStringList, QJSValue *))); | ||
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QObject::connect(m_worker, SIGNAL(finished(QVariantMap, QJSValue *)), | ||
usage, SLOT(finished(QVariantMap, QJSValue *))); | ||
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m_thread.start(); | ||
} | ||
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DiskUsagePrivate::~DiskUsagePrivate() | ||
{ | ||
// Make sure the worker quits as soon as possible | ||
m_worker->scheduleQuit(); | ||
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// Wait for thread to shut down | ||
m_thread.quit(); | ||
if (!m_thread.wait(10 * 1000)) { | ||
qWarning("Worker thread did not quit in time"); | ||
} | ||
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m_worker->deleteLater(); | ||
} | ||
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DiskUsage::DiskUsage(QObject *parent) | ||
: QObject(parent) | ||
, d_ptr(new DiskUsagePrivate(this)) | ||
, m_working(false) | ||
{ | ||
} | ||
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DiskUsage::~DiskUsage() | ||
{ | ||
} | ||
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void DiskUsage::calculate(const QStringList &paths, QJSValue callback) | ||
{ | ||
QJSValue *cb = 0; | ||
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if (!callback.isNull() && !callback.isUndefined() && callback.isCallable()) { | ||
cb = new QJSValue(callback); | ||
} | ||
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setWorking(true); | ||
emit submit(paths, cb); | ||
} | ||
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void DiskUsage::finished(QVariantMap usage, QJSValue *callback) | ||
{ | ||
if (callback) { | ||
callback->call(QJSValueList() << callback->engine()->toScriptValue(usage)); | ||
delete callback; | ||
} | ||
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setWorking(false); | ||
} |
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@@ -0,0 +1,85 @@ | ||
/* | ||
* Copyright (C) 2015 Jolla Ltd. | ||
* Contact: Thomas Perl <thomas.perl@jolla.com> | ||
* | ||
* You may use this file under the terms of the BSD license as follows: | ||
* | ||
* "Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions are | ||
* met: | ||
* * Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* * Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in | ||
* the documentation and/or other materials provided with the | ||
* distribution. | ||
* * Neither the name of Nemo Mobile nor the names of its contributors | ||
* may be used to endorse or promote products derived from this | ||
* software without specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." | ||
*/ | ||
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#ifndef DISKUSAGE_H | ||
#define DISKUSAGE_H | ||
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#include <QObject> | ||
#include <QVariant> | ||
#include <QJSValue> | ||
#include <QScopedPointer> | ||
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class DiskUsagePrivate; | ||
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class DiskUsage : public QObject | ||
{ | ||
Q_OBJECT | ||
Q_DECLARE_PRIVATE(DiskUsage) | ||
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// True while calculation takes place | ||
Q_PROPERTY(bool working | ||
READ working | ||
NOTIFY workingChanged) | ||
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public: | ||
explicit DiskUsage(QObject *parent=0); | ||
virtual ~DiskUsage(); | ||
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// Calculate the disk usage of the given paths, then call | ||
// callback with a QVariantMap (mapping paths to usages in bytes) | ||
Q_INVOKABLE void calculate(const QStringList &paths, QJSValue callback); | ||
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signals: | ||
void workingChanged(); | ||
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signals: | ||
void submit(QStringList paths, QJSValue *callback); | ||
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private slots: | ||
void finished(QVariantMap usage, QJSValue *callback); | ||
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private: | ||
bool working() const { return m_working; } | ||
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void setWorking(bool working) { | ||
if (m_working != working) { | ||
m_working = working; | ||
emit workingChanged(); | ||
} | ||
} | ||
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private: | ||
QScopedPointer<DiskUsagePrivate> const d_ptr; | ||
bool m_working; | ||
}; | ||
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#endif /* DISKUSAGE_H */ |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,60 @@ | ||
/* | ||
* Copyright (C) 2015 Jolla Ltd. | ||
* Contact: Thomas Perl <thomas.perl@jolla.com> | ||
* | ||
* You may use this file under the terms of the BSD license as follows: | ||
* | ||
* "Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions are | ||
* met: | ||
* * Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* * Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in | ||
* the documentation and/or other materials provided with the | ||
* distribution. | ||
* * Neither the name of Nemo Mobile nor the names of its contributors | ||
* may be used to endorse or promote products derived from this | ||
* software without specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." | ||
*/ | ||
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#ifndef DISKUSAGE_P_H | ||
#define DISKUSAGE_P_H | ||
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#include <QObject> | ||
#include <QVariant> | ||
#include <QJSValue> | ||
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class DiskUsageWorker : public QObject | ||
{ | ||
Q_OBJECT | ||
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public: | ||
explicit DiskUsageWorker(QObject *parent=0); | ||
virtual ~DiskUsageWorker(); | ||
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void scheduleQuit() { m_quit = true; } | ||
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public slots: | ||
void submit(QStringList paths, QJSValue *callback); | ||
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signals: | ||
void finished(QVariantMap usage, QJSValue *callback); | ||
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private: | ||
bool m_quit; | ||
}; | ||
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#endif /* DISKUSAGE_P_H */ |
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