public override int Read(byte[] buffer, int offset, int count)
{
Contract.Requires(document != null);
int bytesRead = 0;
int remaining = (int)Math.Min(count, Length - documentOffset);
while (remaining > 0)
{
if (segment == null || segmentOffset >= segment.Content.Length)
{
if (segmentNumber < document.Segments.Count)
{
segment = document.Segments.ElementAt(segmentNumber++);
segmentOffset = 0;
}
else
{
break;
}
}
int segmentCount = (int)Math.Min(remaining, segment.Content.Length - segmentOffset);
Buffer.BlockCopy(segment.Content, segmentOffset, buffer, offset, segmentCount);
segmentOffset += segmentCount;
remaining -= segmentCount;
bytesRead += segmentCount;
}
documentOffset += bytesRead;
return(bytesRead);
}
public ActionResult UploadFiles()
{
try
{
if (Request.InputStream.Length != 0)
{
string type = Request.RequestType;
string fileName = Request.QueryString["file"];
string parameters = Request.QueryString["param"];
int requestId = Int32.Parse(parameters.Substring(parameters.IndexOf('=') + 1));
bool lastChunk = string.IsNullOrEmpty(Request.QueryString["last"]) ? true : bool.Parse(Request.QueryString["last"]);
bool firstChunk = string.IsNullOrEmpty(Request.QueryString["first"]) ? true : bool.Parse(Request.QueryString["first"]);
long startByte = string.IsNullOrEmpty(Request.QueryString["offset"]) ? 0 : long.Parse(Request.QueryString["offset"]);
ModularProgramDocument document = null;
if (firstChunk)
{
document = Documents.All.FirstOrDefault(d => d.Name == fileName && d.RequestId == requestId) ?? Documents.Add(new ModularProgramDocument());
document.Name = fileName;
document.RequestId = requestId;
document.Segments.ToList().ForEach(s => DocumentSegments.Remove(s));
document.MimeType = GetMimeType(fileName);
}
else
{
document = Documents.All.FirstOrDefault(d => d.Name == fileName && d.RequestId == requestId);
}
ModularProgramDocumentSegment segment = new ModularProgramDocumentSegment();
segment.Document = document;
document.Segments.Add(segment);
UnitOfWork.Commit();
long offset = 0;
byte[] buffer = new byte[Math.Min(Request.InputStream.Length - Request.InputStream.Position, _buffer_size)];
var ctx = (UnitOfWork as System.Data.Entity.Infrastructure.IObjectContextAdapter).ObjectContext;
int bytesRead = 0;
while ((bytesRead = Request.InputStream.Read(buffer, 0, buffer.Length)) != 0)
{
if (offset == 0)
{
ctx.ExecuteStoreCommand(@"update ModularProgramDocumentSegments set Content = convert( varbinary(max), {0} ) where Id = {1}", buffer, segment.Id);
}
else
{
ctx.ExecuteStoreCommand(@"update ModularProgramDocumentSegments set Content = Content + {0} where Id = {1}", buffer, segment.Id);
}
offset += bytesRead;
}
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e);
throw e;
}
return(null);
}