src/AltSpider/AltSpider.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.IO;
   4 using System.Linq;
   5
   6 using ShareDiscoveryService;
   7
   8 namespace AltSpider
   9 {
  10     public class AltSpider
  11     {
  12         public static DiscoveryTreeNode IndexFolder( string directoryName )
  13         {
  14             FileInfo dirinfo = new FileInfo( directoryName );
  15
  16             DiscoveryTreeNode dir
  17                 = new DiscoveryTreeNode
  18                       {
  19                           Path = directoryName,
  20                           Name = Path.GetFileName( directoryName ),
  21                           CreatedAt = dirinfo.CreationTime,
  22                           LastAccessedAt = dirinfo.LastAccessTime,
  23                           LastModifiedAt = dirinfo.LastWriteTime
  24                       };
  25
  26             List<DiscoveryTreeNode> listing = new List<DiscoveryTreeNode>();
  27
  28             try
  29             {
  30                 string[] subdirs = Directory.GetDirectories( directoryName );
  31                 string[] subfiles = Directory.GetFiles( directoryName );
  32
  33                 if ( subdirs.Length == 0 && subfiles.Length == 0 )
  34                 {
  35                     return null;
  36                 }
  37
  38                 dir.ChildNodes
  39                     = (
  40                           (
  41                               from directory in subdirs
  42                               let child = IndexFolder( directory )
  43                               where child != null
  44                               select child
  45                           ).Union(
  46                               from fileName in subfiles
  47                               let info = new FileInfo( fileName )
  48                               select
  49                                   new DiscoveryTreeNode
  50                                       {
  51                                           Path = fileName,
  52                                           Name = info.Name,
  53                                           Size = info.Length,
  54                                           CreatedAt = info.CreationTime,
  55                                           LastAccessedAt = info.LastAccessTime,
  56                                           LastModifiedAt = info.LastWriteTime
  57                                       }
  58                               )
  59                       ).ToList();
  60             }
  61             catch ( UnauthorizedAccessException ex )
  62             {
  63                 Console.Error.WriteLine( "Access denied to {0}", directoryName );
  64             }
  65             catch ( IOException ex )
  66             {
  67                 Console.Error.WriteLine( "Cannot read {0}: {1}", directoryName, ex.Message );
  68             }
  69
  70             return dir;
  71         }
  72     }
  73 }