/// <summary>
/// OpenXMLConnector constructor. Allows to manage a .PNP OpenXML package file through a supporting persistence connector.
/// </summary>
/// <param name="packageFileName">The name of the .PNP package file. If the .PNP extension is missing, it will be added</param>
/// <param name="persistenceConnector">The FileConnector object that will be used for physical persistence of the file</param>
/// <param name="author">The Author of the .PNP package file, if any. Optional</param>
/// <param name="signingCertificate">The X.509 certificate to use for digital signature of the template, optional</param>
public OpenXMLConnector(string packageFileName,
FileConnectorBase persistenceConnector,
String author = null,
X509Certificate2 signingCertificate = null)
: base()
{
if (String.IsNullOrEmpty(packageFileName))
{
throw new ArgumentException("packageFileName");
}
else if (!packageFileName.EndsWith(".pnp", StringComparison.InvariantCultureIgnoreCase))
{
// Check for file extension
packageFileName = packageFileName.EndsWith(".") ?
(packageFileName + "pnp") : (packageFileName + ".pnp");
}
this.packageFileName = packageFileName;
if (persistenceConnector == null)
{
throw new ArgumentException("persistenceConnector");
}
this.persistenceConnector = persistenceConnector;
// Try to load the .PNP package file
var packageStream = persistenceConnector.GetFileStream(packageFileName);
if (packageStream != null)
{
// If the .PNP package exists unpack it into PnP OpenXML package info object
using (StreamReader sr = new StreamReader(packageStream))
{
Byte[] buffer = new Byte[packageStream.Length];
// TODO: Handle large files with chunking
packageStream.Read(buffer, 0, (Int32)packageStream.Length);
this.pnpInfo = buffer.UnpackTemplate();
}
}
else
{
// Otherwsie initialize a fresh new PnP OpenXML package info object
this.pnpInfo = new PnPInfo()
{
Manifest = new PnPManifest()
{
Type = PackageType.Full
},
Properties = new PnPProperties()
{
Generator = PnPCoreUtilities.PnPCoreVersionTag,
Author = !String.IsNullOrEmpty(author) ? author : String.Empty,
},
};
}
}
