public void NotifyFileRename(string oPath, string nPath)
{
ProgramStatus.Instance.IncFileAccessRate();
string oldPath = null;
string newPath = null;
FileAccessInfo t = null;
lock (_filesLock)
{
if (String.IsNullOrEmpty(oPath))
{
return;
}
if (String.IsNullOrEmpty(nPath))
{
return;
}
// Purge the file names
if (oPath.StartsWith(@"\??\"))
{
oldPath = oPath.Substring(4);
}
else
{
oldPath = oPath;
}
if (nPath.StartsWith(@"\??\"))
{
newPath = nPath.Substring(4);
}
else
{
newPath = nPath;
}
// TODO: wildcard? Can they appear here?
bool knownFile = _fileMap.ContainsKey(oldPath);
try
{
// Get the file log associated to that path or create a new one.
if (knownFile)
{
t = _fileMap[oldPath];
// At this point it is necessary to update the mapping dictionary
_fileMap.Remove(oldPath);
if (_fileMap.ContainsKey(newPath))
{
// Swap it.
_fileMap[newPath] = t;
}
else
{
_fileMap.Add(newPath, t);
}
}
else
{
t = new FileAccessInfo();
t.Path = oPath;
_fileMap.Add(oldPath, t);
}
}
catch (Exception e) {
throw e;
}
} // Release the lock on collection
// Let the object register the file access. This will acquire the lock
t.NotifyRenamedTo(newPath);
}
public void NotifyFileAccess(string ss)
{
ProgramStatus.Instance.IncFileAccessRate();
string wild_path = "";
if (ss.StartsWith(@"\??\"))
{
wild_path = ss.Substring(4);
}
var toNotify = new List <FileAccessInfo>();
// Lock the collection
lock (_filesLock)
{
string[] files = null;
// File path may contain wildcard. It is necessary to expand them here and perform analysis on each file.
// This, of course, KILLs performance, but gives to us much more interesting data.
if (wild_path.Contains('*'))
{
try
{
var dir = Path.GetDirectoryName(wild_path);
var fname = Path.GetFileName(wild_path);
if (Directory.Exists(dir))
{
// Try to expand the wildcard, if any
files = System.IO.Directory.GetFiles(dir, fname);
}
}
catch (Exception e)
{
// An error occurred. Just take into account the root file
files = new String[] { wild_path };
}
}
else
{ // If the file does not contain any wildcard, just add it.
files = new String[] { wild_path };
}
if (files == null)
{
return;
}
foreach (var s in files)
{
if (String.IsNullOrEmpty(s))
{
continue;
}
bool knownFile = _fileMap.ContainsKey(s);
FileAccessInfo t = null;
// Get the file log associated to that path or create a new one.
if (knownFile)
{
t = _fileMap[s];
}
else
{
t = new FileAccessInfo();
t.Path = s;
_fileMap.Add(s, t);
}
toNotify.Add(t);
}
} // Release the lock on the collection
// Let the object register the file access. This will acquire the lock on each file and eventually will require some time
foreach (var t in toNotify)
{
t.NotifyAccess();
}
return;
}