[partition] Move bytesToSectors() to CalamaresUtils namespace

In order to prepare for future refactoring of the PartSize class, move
the bytesToSectors() function to libcalamares in the CalamaresUtils
namespace.

Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>

src/libcalamares/utils/Units.h

@@ -78,5 +78,19 @@ constexpr int BytesToMiB( qint64 b )
     return int( b / 1024 / 1024 );
 }
 
+constexpr qint64 alignBytesToBlockSize( qint64 bytes, qint64 blocksize )
+{
+    qint64 blocks = bytes / blocksize;
+
+    if ( blocks * blocksize != bytes )
+        ++blocks;
+    return blocks * blocksize;
+}
+
+constexpr qint64 bytesToSectors( qint64 bytes, qint64 blocksize )
+{
+    return alignBytesToBlockSize( alignBytesToBlockSize( bytes, blocksize), MiBtoBytes(1ULL) ) / blocksize;
+}
+
 }  // namespace
 #endif

src/modules/partition/core/PartUtils.cpp

@@ -101,7 +101,7 @@ PartSize::toSectors( qint64 totalSectors, qint64 sectorSize ) const
     case unit_t::KiB:
     case unit_t::MiB:
     case unit_t::GiB:
-        return bytesToSectors ( toBytes(), sectorSize );
+        return CalamaresUtils::bytesToSectors ( toBytes(), sectorSize );
     }
 
     return -1;

src/modules/partition/core/PartUtils.h

@@ -181,20 +181,6 @@ QString findFS( QString fsName, FileSystem::Type* fsType );
  */
 qint64 sizeToSectors( double size, SizeUnit unit, qint64 totalSectors, qint64 logicalSize );
 
-constexpr qint64 alignBytesToBlockSize( qint64 bytes, qint64 blocksize )
-{
-    qint64 blocks = bytes / blocksize;
-
-    if ( blocks * blocksize != bytes )
-        ++blocks;
-    return blocks * blocksize;
-}
-
-constexpr qint64 bytesToSectors( qint64 bytes, qint64 blocksize )
-{
-    return alignBytesToBlockSize( alignBytesToBlockSize( bytes, blocksize), MiBtoBytes(1ULL) ) / blocksize;
-}
-
 }
 
 #endif // PARTUTILS_H

src/modules/partition/core/PartitionActions.cpp

@@ -115,11 +115,11 @@ doAutopartition( PartitionCoreModule* core, Device* dev, Choices::AutoPartitionO
     // Since sectors count from 0, if the space is 2048 sectors in size,
     // the first free sector has number 2048 (and there are 2048 sectors
     // before that one, numbered 0..2047).
-    qint64 firstFreeSector = PartUtils::bytesToSectors( empty_space_sizeB, dev->logicalSize() );
+    qint64 firstFreeSector = CalamaresUtils::bytesToSectors( empty_space_sizeB, dev->logicalSize() );
 
     if ( isEfi )
     {
-        qint64 efiSectorCount = PartUtils::bytesToSectors( uefisys_part_sizeB, dev->logicalSize() );
+        qint64 efiSectorCount = CalamaresUtils::bytesToSectors( uefisys_part_sizeB, dev->logicalSize() );
         Q_ASSERT( efiSectorCount > 0 );
 
         // Since sectors count from 0, and this partition is created starting