// call to update/create watchers on joutnal and UI. Do it with system stopped
public void SetupWatchers(string[] stdfolders)
{
System.Diagnostics.Debug.Assert(ScanThread == null); // double check we are not scanning.
List <int> watchersinuse = new List <int>();
foreach (string std in stdfolders) // setup the std folders
{
watchersinuse.Add(CheckAddPath(std));
}
foreach (var cmdr in EDCommander.GetListCommanders()) // setup any commander folders
{
if (!cmdr.ConsoleCommander && cmdr.JournalDir.HasChars()) // not console commanders, and we have a path
{
watchersinuse.Add(CheckAddPath(cmdr.JournalDir)); // try adding
}
}
List <int> del = new List <int>();
for (int i = 0; i < watchers.Count; i++) // find any watchers not in the watchersinuse list
{
if (!watchersinuse.Contains(i))
{
del.Add(i);
}
}
for (int j = 0; j < del.Count; j++)
{
int wi = del[j];
System.Diagnostics.Trace.WriteLine(string.Format("Delete watch on {0}", watchers[wi].WatcherFolder));
JournalMonitorWatcher mw = watchers[wi];
mw.StopMonitor(); // just in case
watchers.Remove(mw);
StatusReader sw = statuswatchers[wi];
statuswatchers.Remove(sw);
}
}
private int CheckAddPath(string p) // return index of watcher (and therefore status watcher as we add in parallel)
{
try
{
string path = Path.GetFullPath(p); // make path normalised. this can throw, so we need to protect and reject the path
if (Directory.Exists(path)) // sanity check in case folder disappeared
{
int present = watchers.FindIndex(x => x.WatcherFolder.Equals(path, StringComparison.InvariantCultureIgnoreCase));
if (present < 0) // and we are not watching it, add it
{
System.Diagnostics.Trace.WriteLine(string.Format("New watch on {0}", path));
JournalMonitorWatcher mw = new JournalMonitorWatcher(path);
watchers.Add(mw);
StatusReader sw = new StatusReader(path);
statuswatchers.Add(sw);
present = watchers.Count - 1;
}
else
{
System.Diagnostics.Trace.WriteLine(string.Format("Existing watch on {0}", path));
}
return(present);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Watcher path exception" + ex);
}
return(-1);
}