public CachedFileResult(VirtualFile file, DateTime?lastModifiedUtc = null, string contentType = null)
{
Guard.NotNull(file, nameof(file));
try
{
var fi = GetFileInfo(file.VirtualPath);
if (fi.Exists)
{
ContentType = contentType.NullEmpty() ?? MimeTypes.MapNameToMimeType(fi.Name);
FileLength = fi.Length;
LastModifiedUtc = fi.LastWriteTimeUtc;
}
}
finally
{
if (lastModifiedUtc == null)
{
throw new ArgumentNullException(nameof(lastModifiedUtc), "A modification date must be provided if the VirtualFile cannot be mapped to a physical path.");
}
if (FileLength == null)
{
ContentType = contentType.NullEmpty() ?? MimeTypes.MapNameToMimeType(file.Name);
using (var stream = file.Open())
{
FileLength = stream.Length;
}
}
}
Transmitter = new FileStreamTransmitter(file.Open);
LastModifiedUtc = lastModifiedUtc.Value;
}
public CachedFileResult(string contentType, DateTime lastModifiedUtc, Func <Stream> factory, long?fileLength = null)
{
Guard.NotNull(factory, nameof(factory));
Guard.NotEmpty(contentType, nameof(contentType));
Transmitter = new FileStreamTransmitter(factory);
ContentType = contentType;
FileLength = fileLength;
LastModifiedUtc = lastModifiedUtc;
}
public CachedFileResult(IFile file, string contentType = null)
{
Guard.NotNull(file, nameof(file));
if (!file.Exists)
{
throw new FileNotFoundException(file.Path);
}
Transmitter = new FileStreamTransmitter(file.OpenRead);
ContentType = contentType.NullEmpty() ?? MimeTypes.MapNameToMimeType(file.Name);
FileLength = file.Size;
LastModifiedUtc = file.LastUpdated;
}