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/* === This file is part of Calamares - <https://github.com/calamares> ===
*
* Copyright 2019, Collabora Ltd <arnaud.ferraris@collabora.com>
*
* Calamares is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Calamares is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PARTITION_PARTITIONSIZE_H
#define PARTITION_PARTITIONSIZE_H
#include "utils/Units.h"
#include "utils/NamedSuffix.h"
// Qt
#include <QString>
namespace Calamares
{
enum class SizeUnit
{
None,
Percent,
Byte,
KiB,
MiB,
GiB
};
/** @brief Partition size expressions
*
* Sizes can be specified in bytes, KiB, MiB, GiB or percent (of
* the available drive space are on). This class handles parsing
* of such strings from the config file.
*/
class PartitionSize : public NamedSuffix<SizeUnit, SizeUnit::None>
{
public:
PartitionSize() : NamedSuffix() { }
PartitionSize( int v, unit_t u ) : NamedSuffix( v, u ) { }
PartitionSize( const QString& );
bool isValid() const
{
return ( unit() != SizeUnit::None ) && ( value() > 0 );
}
bool operator< ( const PartitionSize& other ) const;
bool operator> ( const PartitionSize& other ) const;
bool operator== ( const PartitionSize& other ) const;
/** @brief Convert the size to the number of sectors @p totalSectors .
*
* Each sector has size @p sectorSize, for converting sizes in Bytes,
* KiB, MiB or GiB to sector counts.
*
* @return the number of sectors needed, or -1 for invalid sizes.
*/
qint64 toSectors( qint64 totalSectors, qint64 sectorSize ) const;
/** @brief Convert the size to bytes.
*
* The device's sectors count @p totalSectors and sector size
* @p sectoreSize are used to calculated the total size, which
* is then used to calculate the size when using Percent.
*
* @return the size in bytes, or -1 for invalid sizes.
*/
qint64 toBytes( qint64 totalSectors, qint64 sectorSize ) const;
/** @brief Convert the size to bytes.
*
* Total size @p totalBytes is needed for sizes in Percent. This
* parameter is unused in any other case.
*
* @return the size in bytes, or -1 for invalid sizes.
*/
qint64 toBytes( qint64 totalBytes ) const;
/** @brief Convert the size to bytes.
*
* This method is only valid for sizes in Bytes, KiB, MiB or GiB.
* It will return -1 in any other case.
*
* @return the size in bytes, or -1 if it cannot be calculated.
*/
qint64 toBytes() const;
};
} // namespace Calamares
#endif // PARTITION_PARTITIONSIZE_H
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