protected override bool TouchFile(string path)
{
// Prüfen der Eingaben im Debug- Zweig
Debug.Assert(System.IO.File.Exists(path), "Datei " + path + "existiert nicht");
ContentVector newContentVec;
if (_classificator.classify(path, out newContentVec))
{
_contentVec += newContentVec;
return(true);
}
else
{
return(false);
}
}
// Überschreiben der virtuellen Methoden der Basisklasse
protected override bool BeginScanDir(string path)
{
// Prüfung der Eingabe im Debugzweig
Debug.Assert(System.IO.Directory.Exists(path), path + "existiert nicht");
_contentVec = new ContentVector();
if (!_writer.Open())
{
return(false);
}
Trace.WriteLineIf(FileClassificatorServerSwitch.TraceInfo, "Scan startete um " + DateTime.Now.ToLongTimeString());
return(true);
}
protected override bool ExitDir(string path)
{
// Prüfen im Debugzweig
Debug.Assert(_stack.Count > 0, "Stack ist vorzeitig geleert worden");
int Tiefe = _stack.Count;
ContentVector Vec = _contentVec - _stack.Pop();
// Dokumentiern im Debugzweig
Trace.WriteLineIf(FileClassificatorServerSwitch.TraceInfo, "Tiefe= " + Tiefe + " " + path + " SizeInBytes= " + Vec.SizeInBytes);
if (!_writer.Write(Tiefe, path, Vec))
{
return(false);
}
return(true);
}
public static ContentVector operator -(ContentVector a, ContentVector b)
{
ContentVector sum = new ContentVector();
sum.ArchiveBitSetCount = a.ArchiveBitSetCount - b.ArchiveBitSetCount;
sum.ArchiveBitSetSizeInBytes = a.ArchiveBitSetSizeInBytes - b.ArchiveBitSetSizeInBytes;
sum.FotosCount = a.FotosCount - b.FotosCount;
sum.FotosSizeInBytes = a.FotosSizeInBytes - b.FotosSizeInBytes;
sum.OfficeCount = a.OfficeCount - b.OfficeCount;
sum.OfficeSizeInBytes = a.OfficeSizeInBytes - b.OfficeSizeInBytes;
sum.OtherCount = a.OtherCount - b.OtherCount;
sum.OtherSizeInBytes = a.OtherSizeInBytes - b.OtherSizeInBytes;
sum.SourceCodeCount = a.SourceCodeCount - b.SourceCodeCount;
sum.SourceCodeSizeInBytes = a.SourceCodeSizeInBytes - b.SourceCodeSizeInBytes;
sum.VideosCount = a.VideosCount - b.VideosCount;
sum.VideosSizeInBytes = a.VideosSizeInBytes - b.VideosSizeInBytes;
sum.WebCount = a.WebCount - b.WebCount;
sum.WebSizeInBytes = a.WebSizeInBytes - b.WebSizeInBytes;
return(sum);
}
public object Clone()
{
ContentVector vec = new ContentVector();
vec.ArchiveBitSetCount = ArchiveBitSetCount;
vec.ArchiveBitSetSizeInBytes = ArchiveBitSetSizeInBytes;
vec.FotosCount = FotosCount;
vec.FotosSizeInBytes = FotosSizeInBytes;
vec.OfficeCount = OfficeCount;
vec.OfficeSizeInBytes = OfficeSizeInBytes;
vec.OtherCount = OtherCount;
vec.OtherSizeInBytes = OtherSizeInBytes;
vec.SourceCodeCount = SourceCodeCount;
vec.SourceCodeSizeInBytes = SourceCodeSizeInBytes;
vec.VideosCount = VideosCount;
vec.VideosSizeInBytes = VideosSizeInBytes;
vec.WebCount = WebCount;
vec.WebSizeInBytes = WebSizeInBytes;
return(vec);
}
bool IFileClassificator.classify(string Filename, out ContentVector vec)
{
vec = new ContentVector();
// 1. Merkmale der Datei bestimmen
long sizeInBytes = 0;
try
{
FileStream fs = File.Open(Filename, FileMode.Open, FileAccess.Read);
sizeInBytes = fs.Length;
fs.Close();
}
catch (Exception)
{
}
FileAttributes fatt = File.GetAttributes(Filename);
string ext = Path.GetExtension(Filename);
// 2. Merkmale bewerten
if ((fatt & FileAttributes.Archive) != 0)
{
vec.ArchiveBitSetCount = 1;
vec.ArchiveBitSetSizeInBytes = sizeInBytes;
}
switch (ext.ToLower())
{
case ".htm":
case ".html":
case ".js":
case ".gif":
case ".png":
vec.WebCount = 1;
vec.WebSizeInBytes = sizeInBytes;
break;
case ".xml":
case ".cpp":
case ".vb":
case ".vbs":
case ".cs":
case ".pl":
vec.SourceCodeCount = 1;
vec.SourceCodeSizeInBytes = sizeInBytes;
break;
case ".odt":
case ".odg":
case ".ods":
case ".odf":
case ".pdf":
case ".txt":
case ".xls":
case ".ppt":
case ".doc":
vec.OfficeCount = 1;
vec.OfficeSizeInBytes = sizeInBytes;
break;
case ".jpg":
case ".tiff":
case ".bmp":
if (sizeInBytes < 1024 * 100)
{
vec.WebCount = 1;
vec.WebSizeInBytes = sizeInBytes;
}
else
{
vec.FotosCount = 1;
vec.FotosSizeInBytes = sizeInBytes;
}
break;
case ".avi":
case ".mov":
case ".rm":
case ".wmv":
vec.VideosCount = 1;
vec.VideosSizeInBytes = sizeInBytes;
break;
default:
vec.OtherCount = 1;
vec.OtherSizeInBytes = sizeInBytes;
break;
}
return(true);
}
public bool Write(int Tiefe, string path, ContentVector vec)
{
Debug.Assert(!string.IsNullOrEmpty(path) && vec != null);
_lst.Add((ContentVector)vec.Clone());
return(true);
}
