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C# Scan Directories recusively with given Maxdepth

Posted on 2009-05-10
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Last Modified: 2013-12-17
I have the followin class, scanning all Subdirectories of a given Directory. I would like to add a new parameter "Maxdepth", so it only scans with a maximum Depth of the given param

e.g.

Dir 1
  Dir 1.1
    Dir 1.1.1
      Dir 1.1.1.1 -> should not be scanned

How can I count the actual depth and go to the next directory?

Actualy I have 3 Arguments:
1. List with Include Paths
2. List with exclude paths
3. Boolean for recursive scan

The 4. Parameter should be the Maxdepth
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Management;
using System.Xml.Linq;
using System.IO;
using System.Security;
using System.Security.AccessControl;
using System.Security.Principal;
using System.DirectoryServices.ActiveDirectory;
using System.DirectoryServices;
using System.Windows.Forms;
 
namespace DirectoryScan
{
    public class ACL
    {
 
        /// <summary>
        /// Variables
        /// </summary>
        private String mDirectoryName       = string.Empty;
        private String mAccountName         = string.Empty;
        private String mTyp                 = string.Empty;
        private String mRights              = string.Empty;
        private String mInherited           = string.Empty;
        private String mInheritanceFlags    = string.Empty;
        private String mPropagationFlags    = string.Empty;
        private int mDirectoryCount         = 0;
 
        /// <summary>
        /// Default Constructor
        /// </summary>
        public ACL()
        {
        
        }
 
        public static Dictionary<String, List<ACL>> GetACLInformation(List<Object> includePath, List<Object> excludePath, bool recursive)
        {
 
            // Create Collection Instance
            Dictionary<String,List<ACL>> aclSet = new Dictionary<String,List<ACL>>();
 
            foreach (String driveInfo in includePath)
            {
                // Call recursive private Method
                readDir(new DirectoryInfo(driveInfo), excludePath, aclSet, recursive);
            }
 
            // Return Dictionary
            return new Dictionary<string,List<ACL>>(aclSet);
 
        }
 
 
        private static void readDir(DirectoryInfo directory, List<Object> excludePath, Dictionary<String,List<ACL>> lAclSet, bool recursive)
        {
 
            try
            {
 
                // Check exclude Paths
                if (! excludePath.Contains(directory.FullName.ToString().Trim()))
                {
 
                    // Save Directory Name
                    String dirName = directory.FullName.ToString();
 
                    // Count Subfolders
                    DirectoryInfo[] subDirs = directory.GetDirectories();
                    String dirCount = subDirs.Length.ToString();
 
                    // Create Key
                    String key = dirName + ";" + dirCount;
                    
 
                    // Security Object
                    DirectorySecurity ds = directory.GetAccessControl(AccessControlSections.Access);
                    
                    // Showing access rules data
                    AuthorizationRuleCollection arc = ds.GetAccessRules(true, true, typeof(NTAccount));
                    
                    // Create List
                    List<ACL> aclList = new List<ACL>();
 
                    foreach (FileSystemAccessRule ar in arc)
                    {
 
                        // Create Object
                        ACL acl = new ACL();
 
                        // Set Values
                        acl.AccountName         = ar.IdentityReference.Value.ToString();
                        acl.Typ                 = ar.AccessControlType.ToString();
                        acl.Rights              = ar.FileSystemRights.ToString();
                        acl.Inherited           = ar.IsInherited.ToString();
                        acl.InheritanceFlags    = ar.InheritanceFlags.ToString();
                        acl.PropagationFlags    = ar.PropagationFlags.ToString();
 
                        // Add to List
                        aclList.Add(acl);
 
                    }
 
                    // Add to Dictionary
                    if (! lAclSet.ContainsKey(key))
                    {
                        lAclSet.Add(key, aclList);
                    }
 
                }
 
 
                // Search in Subfolders if recursive true
                if (recursive)
                {
                    foreach (DirectoryInfo subDirectory in directory.GetDirectories())
                    {
                        readDir(subDirectory, excludePath, lAclSet, recursive);
                    }
                }
            }
            catch
            {
                return;
            }
 
        }
 
 
        public String DirectoryName
        {
            get { return mDirectoryName; }
            set { mDirectoryName = value; }
        }
 
        public String AccountName
        {
            get { return mAccountName; }
            set { mAccountName = value; }
        }
 
        public String Typ
        {
            get { return mTyp; }
            set { mTyp = value; }
        }
 
        public String Rights
        {
            get { return mRights; }
            set { mRights = value; }
        }
 
        public String Inherited
        {
            get { return mInherited; }
            set { mInherited = value; }
        }
 
        public String InheritanceFlags
        {
            get { return mInheritanceFlags; }
            set { mInheritanceFlags = value; }
        }
 
        public String PropagationFlags
        {
            get { return mPropagationFlags; }
            set { mPropagationFlags = value; }
        }
 
        public int DirectoryCount
        {
            get { return mDirectoryCount; }
            set { mDirectoryCount = value; }
        }
    }
}

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Question by:schubduese
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6 Comments
 
LVL 5

Expert Comment

by:rendaduiyan
ID: 24352354
It seems you need a parameter for current depth.
Or you can count from your structure.
0
 

Author Comment

by:schubduese
ID: 24352366
Yes, the parameter for depth is known... the question is how can I handle the depth!
0
 
LVL 5

Expert Comment

by:rendaduiyan
ID: 24352377
you can use it to decide whether or not going down.
if (recursive && no more than the MaxDepth)
{
      ///.....
}
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LVL 6

Expert Comment

by:alex_paven
ID: 24352446
To clarify (pardon the terrible pseudo-code):

method([your arguments], int depth)
{
  if (depth > maxDepth) return;
  
  [your code...]
  
  foreach (directory in directories)
  {
    method([your arguments], depth + 1);
  }
}

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Author Comment

by:schubduese
ID: 24352606
Probably my Question was not really clear, sorry for that, I'll start another try

The goal with maxdepth is, that the user can give a parameter with the depth, because he's probably not interested in the 3th, 4th etc. level.

So for an Director C:\Windows and a maxlevel of 1 he will scan every subdirectory directly under C:\Windows. With a maxlevel of 2, the scan will go one level deeper (e.g. C:\Windows\Folder1\Subfolder1)

Hope it's more understandable. Sorry for the circumstances...
0
 
LVL 6

Accepted Solution

by:
alex_paven earned 500 total points
ID: 24352626
Ok, I'll clarify the pseudocode a bit more, seems I was too terse (note the currentDepth + 1 !!!):
private static void readDir(DirectoryInfo directory, List<Object> excludePath, Dictionary<String,List<ACL>> lAclSet, bool recursive, int maxDepth, int currentDepth)
{
  if (currentDepth >= maxDepth) return;
 
  //[do stuff....]
 
  if (recursive)
  {
    foreach (DirectoryInfo subDirectory in directory.GetDirectories())
    {
      readDir(subDirectory, excludePath, lAclSet, recursive, maxDepth, currentDepth + 1);
    }
  }
}

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