public static void Add(Entry e)
{
lock (All) All.Add(e);
var dir = Path.GetDirectoryName(e.Path);
var name = Path.GetFileName(e.Path);
if (!Directory.Exists(dir))
{
throw new DirectoryNotFoundException("Watch.FileLines: Directory not found: " + dir);
}
if (!File.Exists(e.Path))
{
throw new FileNotFoundException("Watch.FileLines: File not found: " + e.Path, e.Path);
}
if (e.Watch)
{
var fsw = new FileSystemWatcher(dir, name)
{
IncludeSubdirectories = false,
NotifyFilter = NotifyFilters.LastWrite | NotifyFilters.Security | NotifyFilters.FileName,
};
fsw.Created += delegate { lock (e.Mutex) { e.LastMeta = FileMetaSnapshot.From(e.Path); Refresh(e); } };
fsw.Changed += delegate { lock (e.Mutex) { e.LastMeta = FileMetaSnapshot.From(e.Path); Refresh(e); } };
fsw.Error += delegate { lock (e.Mutex) { e.LastMeta = FileMetaSnapshot.From(e.Path); Refresh(e); } };
fsw.Deleted += delegate { lock (e.Mutex) { e.LastMeta = FileMetaSnapshot.From(e.Path); Refresh(e); } };
fsw.Renamed += delegate { lock (e.Mutex) { e.LastMeta = FileMetaSnapshot.From(e.Path); Refresh(e); } };
fsw.EnableRaisingEvents = true;
}
Refresh(e);
}
static bool PollFileMetaChanged(Entry e) // FIXME: Rename to better indicate side effects?!?
{
var current = FileMetaSnapshot.From(e.Path);
bool changes = false;
changes = e.LastMeta != current;
e.LastMeta = current;
return(changes);
}
public Entry(string path, bool watch, Action <IEnumerable <string> > onChanged, Action <Exception> onError)
{
Pending = false;
LastMeta = FileMetaSnapshot.From(path);
Path = path;
Watch = watch;
OnChanged = onChanged;
OnError = onError;
}
public static FileMetaSnapshot From(string path)
{
var fi = new FileInfo(path);
var snapshot = new FileMetaSnapshot()
{
LastMod = fi.Exists ? fi.LastWriteTimeUtc : new DateTime(1971, 1, 1),
Size = fi.Exists ? fi.Length : 0,
};
return(snapshot);
}
