#pragma warning restore CS0612 // 型またはメンバーが旧型式です
protected override async Task SetFileSizeImplAsync(long size, CancellationToken cancel = default)
{
List <Cursor> cursorList = GenerateCursorList(size, 1, true);
Cursor cursor = cursorList.Single();
bool shrink = (this.CurrentFileSize > size);
if (shrink)
{
// Delete oversized files
LargeFileSystem.ParsedPath[] physicalFiles = await LargeFileSystem.GetPhysicalFileStateInternal(this.FileParams.Path, cancel);
List <LargeFileSystem.ParsedPath> filesToDelete = physicalFiles.Where(x => x.FileNumber > cursor.PhysicalFileNumber).ToList();
await LargeFileSystem.UnderlayFileSystemPoolForWrite.EnumAndCloseHandlesAsync((key, file) =>
{
if (filesToDelete.Where(x => x.PhysicalFilePath._IsSame(file.FileParams.Path, LargeFileSystem.PathParser.PathStringComparison)).Any())
{
return(true);
}
return(false);
},
() =>
{
foreach (LargeFileSystem.ParsedPath deleteFile in filesToDelete.OrderByDescending(x => x.PhysicalFilePath))
{
UnderlayFileSystem.DeleteFile(deleteFile.PhysicalFilePath, FileFlags.ForceClearReadOnlyOrHiddenBitsOnNeed, cancel);
}
},
(x, y) =>
{
return(-(x.FileParams.Path.CompareTo(y.FileParams.Path)));
},
cancel);
await LargeFileSystem.UnderlayFileSystemPoolForWrite.EnumAndCloseHandlesAsync((key, file) =>
{
if (filesToDelete.Where(x => x.PhysicalFilePath._IsSame(file.FileParams.Path, LargeFileSystem.PathParser.PathStringComparison)).Any())
{
return(true);
}
return(false);
},
() =>
{
foreach (LargeFileSystem.ParsedPath deleteFile in filesToDelete.OrderByDescending(x => x.PhysicalFilePath))
{
UnderlayFileSystem.DeleteFile(deleteFile.PhysicalFilePath, FileFlags.ForceClearReadOnlyOrHiddenBitsOnNeed, cancel);
}
},
(x, y) =>
{
return(-(x.FileParams.Path.CompareTo(y.FileParams.Path)));
},
cancel);
}
await using (var handle = await GetUnderlayRandomAccessHandle(cursor.LogicalPosition, cancel))
{
await handle.SetFileSizeAsync(cursor.PhysicalPosition, cancel);
this.CurrentFileSize = size;
}
}
