102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
/* === This file is part of Calamares - <https://github.com/calamares> ===
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*
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* Copyright 2017, Adriaan de Groot <groot@kde.org>
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* Copyright 2019, Collabora Ltd <arnaud.ferraris@collabora.com>
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*
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* Calamares is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Calamares is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef UTILS_UNITS_H
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#define UTILS_UNITS_H
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#include <QtCore/QIntegerForSize>
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namespace CalamaresUtils
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{
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/** User defined literals, 1_KiB is 1 KibiByte (= 2^10 bytes) */
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constexpr qint64 operator ""_KiB( unsigned long long m )
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{
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return qint64(m) * 1024;
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}
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/** User defined literals, 1_MiB is 1 MibiByte (= 2^20 bytes) */
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constexpr qint64 operator ""_MiB( unsigned long long m )
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{
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return operator ""_KiB(m) * 1024;
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}
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/** User defined literals, 1_GiB is 1 GibiByte (= 2^30 bytes) */
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constexpr qint64 operator ""_GiB( unsigned long long m )
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{
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return operator ""_MiB(m) * 1024;
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}
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constexpr qint64 KiBtoBytes( unsigned long long m )
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{
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return operator ""_KiB( m );
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}
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constexpr qint64 MiBtoBytes( unsigned long long m )
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{
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return operator ""_MiB( m );
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}
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constexpr qint64 GiBtoBytes( unsigned long long m )
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{
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return operator ""_GiB( m );
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}
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constexpr qint64 KiBtoBytes( double m )
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{
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return qint64(m * 1024);
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}
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constexpr qint64 MiBtoBytes( double m )
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{
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return qint64(m * 1024 * 1024);
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}
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constexpr qint64 GiBtoBytes( double m )
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{
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return qint64(m * 1024 * 1024 * 1024);
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}
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constexpr int BytesToMiB( qint64 b )
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{
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return int( b / 1024 / 1024 );
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}
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constexpr int BytesToGiB( qint64 b )
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{
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return int( b / 1024 / 1024 / 1024 );
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}
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constexpr qint64 alignBytesToBlockSize( qint64 bytes, qint64 blocksize )
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{
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qint64 blocks = bytes / blocksize;
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if ( blocks * blocksize != bytes )
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++blocks;
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return blocks * blocksize;
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}
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constexpr qint64 bytesToSectors( qint64 bytes, qint64 blocksize )
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{
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return alignBytesToBlockSize( alignBytesToBlockSize( bytes, blocksize), MiBtoBytes(1ULL) ) / blocksize;
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}
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} // namespace
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#endif
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