Regex match take a very long time to execute

Question

I wrote a regular expression that parses a file path into different group (DRIVE, DIR, FILE, EXTENSION).

^((?[a-zA-Z]):\\\\)*((?[a-zA         


        

Answer 1

Why not just use System.IO.Path functions?

• Drive: http://msdn.microsoft.com/en-us/library/system.io.path.getpathroot.aspx

• Directory: http://msdn.microsoft.com/en-us/library/system.io.path.getdirectoryname.aspx minus what is gotten for Drive

• Filename: http://msdn.microsoft.com/en-us/library/system.io.path.getfilenamewithoutextension.aspx

• Extension: http://msdn.microsoft.com/en-us/library/system.io.path.getextension.aspx