public File SplitStream(Stream stream, int partsCount, string fileName)
{
var file = new File();
var memoryStream = new MemoryStream();
stream.CopyTo(memoryStream);
var bytesArray = memoryStream.ToArray();
file.FileParts = new List <FilePart>();
if (partsCount < bytesArray.Length)
{
for (int i = 0; i < partsCount; i++)
{
var filePart = new FilePart
{
Id = new Guid(),
Name = fileName + i,
PartNumber = i,
SummaryInfo = new FileSummaryInfo
{
FileName = fileName,
FileParts = new List <FilePartInfo>()
}
};
var arraySize = i == partsCount - 1
? bytesArray.Length / partsCount
: (int)Math.Round((double)bytesArray.Length / partsCount);
var bytesArrayPart = new byte[arraySize];
for (int j = 0; j < arraySize; j++)
{
bytesArrayPart[j] = bytesArray[arraySize * i + j];
}
filePart.DataBytesArray = bytesArrayPart;
file.FileParts.Add(filePart);
}
}
foreach (var filePart in file.FileParts)
{
filePart.SummaryInfo.FileParts = new List <FilePartInfo>(file.FileParts.Select(f => f as FilePartInfo));
}
return(file);
}
public Task WriteFile(File file, string folderPath)
{
return(Task.Run(() =>
{
foreach (var filePart in file.FileParts)
{
using (var fileStream =
new FileStream(folderPath + filePart.SummaryInfo.FileName + filePart.PartNumber,
FileMode.OpenOrCreate, FileAccess.Write))
{
using (var writer =
new StreamWriter(fileStream))
{
JsonSerializer serialiser = new JsonSerializer();
serialiser.Serialize(writer, filePart);
}
}
}
}));
}