private static int ScanDirectory(DirectoryInfo directory, ICommentsDescriptor descriptor)
{
var totalLines = 0;
foreach (var f in directory.GetFiles())
{
if (f.Extension.Equals(descriptor.Extension))
{
totalLines += ScanFile(f, descriptor);
}
}
foreach (var d in directory.GetDirectories())
{
totalLines += ScanDirectory(d, descriptor);
}
return(totalLines);
}
private static int ScanFile(FileInfo file, ICommentsDescriptor descriptor)
{
var totalLines = 0;
using (var reader = new StreamReader(file.OpenRead()))
{
LinesScanningState state = LinesScanningState.OutsideComments;
var startIndex = 0;
string line = reader.ReadLine();
bool lineCounted = false;
while (line != null)
{
switch (state)
{
case LinesScanningState.OutsideComments:
var start = line.IndexOf(descriptor.MultiLineCommentBegin, startIndex);
if (start >= 0)
{
if (start == startIndex)
{
state = LinesScanningState.InsideComments;
}
else
{
var oneLineStart = line.IndexOf(descriptor.OneLineCommentBegin, startIndex);
if (oneLineStart >= 0)
{
if (oneLineStart < start)
{
if (oneLineStart > startIndex)
{
lineCounted = true;
}
totalLines += lineCounted ? 1 : 0;
line = reader.ReadLine();
lineCounted = false;
startIndex = 0;
}
else
{
lineCounted = true;
state = LinesScanningState.InsideComments;
startIndex = start;
}
}
else
{
lineCounted = true;
state = LinesScanningState.InsideComments;
startIndex = start;
}
}
}
else
{
var oneLineStart = line.IndexOf(descriptor.OneLineCommentBegin, startIndex);
if (oneLineStart >= 0)
{
if (oneLineStart > startIndex)
{
lineCounted = true;
}
totalLines += lineCounted ? 1 : 0;
line = reader.ReadLine();
lineCounted = false;
startIndex = 0;
}
else
{
lineCounted = true;
totalLines += lineCounted ? 1 : 0;
line = reader.ReadLine();
lineCounted = false;
startIndex = 0;
}
}
break;
case LinesScanningState.InsideComments:
var end = line.IndexOf(descriptor.MultiLineCommentEnd, startIndex);
if (end >= 0)
{
state = LinesScanningState.OutsideComments;
if (end < line.Length - 1)
{
startIndex = end;
}
else
{
totalLines += lineCounted ? 1 : 0;
line = reader.ReadLine();
lineCounted = false;
startIndex = 0;
}
}
else
{
totalLines += lineCounted ? 1 : 0;
line = reader.ReadLine();
lineCounted = false;
startIndex = 0;
}
break;
}
}
}
return(totalLines);
}