internal AufsImpl(MergedVolumeInfo volumeInfo)
{
if (volumeInfo == null)
{
throw new ArgumentNullException("volumeInfo");
}
this.volumeInfo = volumeInfo;
this.members = volumeInfo.Members;
this.policy = volumeInfo.Policy;
}
private void readConfiguration()
{
bool isValid = true;
XmlReaderSettings settings = new XmlReaderSettings();
using (StreamReader schemaReader = new StreamReader(Assembly.GetExecutingAssembly().GetManifestResourceStream(this.GetType(), "configschema.xsd"))) // load the schema embedded resource to validate the user's config file
{
settings.Schemas.Add(null, XmlReader.Create(schemaReader));
settings.ValidationFlags |= XmlSchemaValidationFlags.ReportValidationWarnings;
settings.ValidationType = ValidationType.Schema;
settings.ValidationEventHandler += (sender, e) => // if there's any validation events (errors), then the configuration file is invalid
{
Console.Error.WriteLine(e.Message);
isValid = false;
};
using (XmlReader reader = XmlReader.Create(this.configPath, settings))
{
XmlDocument configDoc = new XmlDocument();
configDoc.Load(reader);
if (!isValid)
{
throw new InvalidDataException("Configuration file format is invalid");
}
List<Member> members = new List<Member>();
foreach (XmlNode memberNode in configDoc.SelectNodes("//aufsconfig/members/member"))
{
string path = memberNode.Attributes["path"].Value;
bool readOnly = false;
if (memberNode.Attributes["readonly"] != null)
{
readOnly = Convert.ToBoolean(memberNode.Attributes["readonly"].Value);
}
members.Add(new Member(path, readOnly));
}
CreationPolicy policy = PolicyLoader.GetPolicy(configDoc.SelectSingleNode("//aufsconfig/volume").Attributes["policy"].Value, members);
string driveLetter = configDoc.SelectSingleNode("//aufsconfig/volume/letter").InnerText;
string driveLabel = configDoc.SelectSingleNode("//aufsconfig/volume/label").InnerText;
this.mergedVolume = new MergedVolumeInfo(members, driveLetter.ToCharArray()[0], driveLabel, policy);
}
}
}
