/// <summary>Initialize an element stream from the XML file <paramref name="filename"/> with <see cref="owner"/> as the initial owner object</summary>
/// <param name="filename">Name of the XML file we're to load</param>
/// <param name="permissions">Supported access permissions for this stream</param>
/// <param name="owner">Initial owner object</param>
public XmlElementStream(string filename,
System.IO.FileAccess permissions = System.IO.FileAccess.ReadWrite, object owner = null)
{
Contract.Requires <ArgumentNullException>(filename != null);
if (!System.IO.File.Exists(filename))
{
throw new System.IO.FileNotFoundException("XmlElementStream: Load", filename);
}
Document = new Xml.XmlDocumentWithLocation();
try
{
var xml_reader_settings = new XmlReaderSettings
{
XmlResolver = null,
DtdProcessing = DtdProcessing.Ignore
};
using (var xml_reader = XmlReader.Create(this.StreamName = filename, xml_reader_settings))
{
Document.Load(xml_reader);
}
}
catch (Exception ex)
{
throw new System.IO.InvalidDataException("Failed to load " + StreamName, ex);
}
StreamMode = StreamPermissions = permissions;
this.Owner = owner;
}
public XmlElementStream(System.IO.Stream sourceStream,
System.IO.FileAccess permissions = System.IO.FileAccess.ReadWrite, object owner = null, string streamNameOverride = null)
{
Contract.Requires <ArgumentNullException>(sourceStream != null);
Contract.Requires <ArgumentException>(sourceStream.HasPermissions(permissions));
if (streamNameOverride.IsNullOrEmpty())
{
SetStreamName(sourceStream);
}
else
{
base.StreamName = streamNameOverride;
}
var doc = new Xml.XmlDocumentWithLocation
{
FileName = base.StreamName
};
Document = doc;
try
{
using (var xmlReader = XmlReader.Create(sourceStream))
{
Document.Load(xmlReader);
}
} catch (Exception ex)
{
throw new System.IO.InvalidDataException("Failed to load " + StreamName, ex);
}
StreamMode = StreamPermissions = permissions;
this.Owner = owner;
}
