/// <inheritdoc />
public override void Push(string xpath, string xmlNamespace = null, string prefix = "", int index = -1)
{
PushNamespace(xmlNamespace, prefix);
xpath = QualifyXPath(xpath, prefix, xmlNamespace, index);
pathStack.Push(Tuple.Create(xpath, index));
XElement q;
List <XElement> nodes = null;
if (elementStack.Count == 0)
{
q = (from x in RootElement.Elements(xpath) select x).FirstOrDefault();
}
else if (CurrentElement == null)
{
q = null;
}
else if (index == -1)
{
q = (from x in CurrentElement.Elements(xpath) select x).FirstOrDefault();
}
else
{
// Get the collection and work out which one we want.
nodes = XElements(xpath);
q = index > nodes.Count ? null : nodes[index - 1];
}
elementStack.Push(CurrentElement);
CurrentElement = q;
CurrentNodes = nodes;
}
/// <summary>Loads all tasks from the XML file.</summary>
public List <MirrorTask> LoadTasks()
{
var tasks = new List <MirrorTask>();
foreach (var element in RootElement.Elements("task"))
{
tasks.Add(MirrorTask.Deserialize(element));
}
return(tasks);
}
private XElement GetTaskElement(string taskGuid, bool create)
{
var element = RootElement.Elements("task").SingleOrDefault(
e => e.Attribute("guid").Value == taskGuid);
if (element == null && create)
{
element = new XElement("task");
element.SetAttributeValue("guid", taskGuid);
RootElement.Add(element);
}
return(element);
}
/// <exception cref="FileLockedException"></exception>
private Log(bool readOnly)
: base(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), PATH), "log", readOnly)
{
// upgrade to new format:
// move /log/entry elements to /log/task[@guid=...]/entry
var flatEntries = RootElement.Elements("entry");
foreach (var e in flatEntries)
{
e.Remove();
string taskGuid = e.Attribute("taskGuid").Value;
e.SetAttributeValue("taskGuid", null);
var taskElement = GetTaskElement(taskGuid, create: true);
taskElement.Add(e);
}
}
/// <summary>
/// Returns the specified task's element in the XML document or null
/// if there is no matching element.
/// </summary>
/// <param name="guid">GUID of the task.</param>
private XElement GetTaskElement(string guid)
{
return(RootElement.Elements("task").SingleOrDefault(e => e.Attribute("guid").Value == guid));
}
