/// <summary>
/// Reads the descriptor of this package.
/// </summary>
public DataPackageDescriptor ReadDescriptor()
{
if (_isClosed)
{
throw new ObjectDisposedException(nameof(DataPackageFile));
}
var descriptorUri = new Uri(FILE_DESCRIPTOR, UriKind.Relative);
if (_package.PartExists(descriptorUri))
{
var descriptorPart = _package.GetPart(descriptorUri);
DataPackageDescriptor?result = null;
using (var inStream = descriptorPart.GetStream(FileMode.Open, FileAccess.Read))
{
result = SerializationHelper.DeserializeFromStream <DataPackageDescriptor>(inStream);
}
if (result == null)
{
result = new DataPackageDescriptor();
}
return(result);
}
else
{
return(new DataPackageDescriptor());
}
}
public void WriteSingleFile <T>(T fileContents, string dataType)
where T : class
{
if (_isClosed)
{
throw new ObjectDisposedException(nameof(DataPackageFile));
}
var descriptor = new DataPackageDescriptor();
descriptor.DataType = dataType;
// Write descriptor
var descriptorUri = new Uri(FILE_DESCRIPTOR, UriKind.Relative);
if (_package.PartExists(descriptorUri))
{
_package.DeletePart(descriptorUri);
}
var outPartDescriptor = _package.CreatePart(descriptorUri, "text/json");
using (var outStream = outPartDescriptor.GetStream(FileMode.Create))
{
SerializationHelper.SerializeToStream(outStream, descriptor);
}
// Write content
var contentUri = new Uri(FILE_SINGLE_DATA_FILE, UriKind.Relative);
if (_package.PartExists(contentUri))
{
_package.DeletePart(contentUri);
}
var outPartContent = _package.CreatePart(contentUri, "text/json");
using (var outStream = outPartContent.GetStream(FileMode.Create))
{
SerializationHelper.SerializeToStream(outStream, fileContents);
}
}