131 lines
3.1 KiB
C++
131 lines
3.1 KiB
C++
/*
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SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
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SPDX-FileCopyrightText: 2012-2018 Andrius Štikonas <andrius@stikonas.eu>
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SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "util/capacity.h"
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#include "core/partition.h"
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#include "core/device.h"
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#include <KFormat>
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#include <KLocalizedString>
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#include <QDebug>
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const QString Capacity::m_InvalidString = QStringLiteral("---");
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/** Creates a new Capacity instance.
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@param size the size in bytes
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*/
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Capacity::Capacity(qint64 size) :
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m_Size(size)
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{
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}
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/** Creates a new Capacity instance.
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@param p the Partition
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@param t type of Capacity
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*/
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Capacity::Capacity(const Partition& p, Type t) :
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m_Size(-1)
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{
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switch (t) {
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case Type::Used: m_Size = p.used(); break;
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case Type::Available: m_Size = p.available(); break;
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case Type::Total: m_Size = p.capacity();
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}
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}
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/** Creates a new Capacity instance.
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@param d the Device
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*/
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Capacity::Capacity(const Device& d) :
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m_Size(d.capacity())
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{
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}
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/** Returns the Capacity as qint64 converted to the given Unit.
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@param u the Unit to use
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@return the Capacity in the given Unit as qint64
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*/
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qint64 Capacity::toInt(Unit u) const
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{
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return static_cast<qint64>(m_Size / unitFactor(Unit::Byte, u));
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}
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/** Returns the Capacity as double converted to the given Unit.
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@param u the Unit to use
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@return the Capacity in the given Unit as double
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*/
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double Capacity::toDouble(Unit u) const
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{
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return static_cast<double>(m_Size) / unitFactor(Unit::Byte, u);
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}
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/** Returns a factor to convert between two Units.
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@param from the Unit to convert from
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@param to the Unit to convert to
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@return the factor to use for conversion
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*/
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qint64 Capacity::unitFactor(Unit from, Unit to)
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{
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Q_ASSERT(from <= to);
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if (from > to) {
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qWarning() << "from: " << static_cast<uint>(from) << ", to: " << static_cast<uint>(to);
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return 1;
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}
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qint64 result = 1;
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qint32 a = static_cast<uint>(from);
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qint32 b = static_cast<uint>(to);
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while (b-- > a)
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result *= 1024;
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return result;
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}
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/** Returns the name of a given Unit.
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@param u the Unit to find the name for
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@return the name
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*/
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QString Capacity::unitName(Unit u, qint64 val)
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{
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static QString unitNames[] = {
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xi18ncp("@item:intext unit", "Byte", "Bytes", val),
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xi18nc("@item:intext unit", "KiB"),
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xi18nc("@item:intext unit", "MiB"),
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xi18nc("@item:intext unit", "GiB"),
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xi18nc("@item:intext unit", "TiB"),
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xi18nc("@item:intext unit", "PiB"),
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xi18nc("@item:intext unit", "EiB"),
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xi18nc("@item:intext unit", "ZiB"),
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xi18nc("@item:intext unit", "YiB")
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};
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if (static_cast<quint32>(u) >= sizeof(unitNames) / sizeof(unitNames[0]))
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return xi18nc("@item:intext unit", "(unknown unit)");
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return unitNames[static_cast<quint32>(u)];
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}
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/** Determine if the capacity is valid.
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@return true if it is valid
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*/
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bool Capacity::isValid() const
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{
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return m_Size >= 0;
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}
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QString Capacity::formatByteSize(double size, int precision)
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{
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if (size < 0)
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return invalidString();
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return KFormat().formatByteSize(size, precision);
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}
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