From 17106ea5c72511f5871178c7f1def629c20191ac Mon Sep 17 00:00:00 2001
From: ebr11 Eric Reed spam <ebr11 Eric Reed spam@reedsplace.com>
Date: Mon, 17 Sep 2012 11:12:43 -0400
Subject: Initial commit changing to on-demand child loading and validations

---
 MediaBrowser.Controller/IO/FileSystemHelper.cs | 86 ++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 MediaBrowser.Controller/IO/FileSystemHelper.cs

(limited to 'MediaBrowser.Controller/IO/FileSystemHelper.cs')

diff --git a/MediaBrowser.Controller/IO/FileSystemHelper.cs b/MediaBrowser.Controller/IO/FileSystemHelper.cs
new file mode 100644
index 000000000..0a80a4d97
--- /dev/null
+++ b/MediaBrowser.Controller/IO/FileSystemHelper.cs
@@ -0,0 +1,86 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using MediaBrowser.Controller.Resolvers;
+using MediaBrowser.Controller.Library;
+
+namespace MediaBrowser.Controller.IO
+{
+    public static class FileSystemHelper
+    {
+        /// <summary>
+        /// Transforms shortcuts into their actual paths and filters out items that should be ignored
+        /// </summary>
+        public static ItemResolveEventArgs FilterChildFileSystemEntries(ItemResolveEventArgs args, bool flattenShortcuts)
+        {
+            
+            List<WIN32_FIND_DATA> returnChildren = new List<WIN32_FIND_DATA>();
+            List<WIN32_FIND_DATA> resolvedShortcuts = new List<WIN32_FIND_DATA>();
+
+            foreach (var file in args.FileSystemChildren)
+            {
+                // If it's a shortcut, resolve it
+                if (Shortcut.IsShortcut(file.Path))
+                {
+                    string newPath = Shortcut.ResolveShortcut(file.Path);
+                    WIN32_FIND_DATA newPathData = FileData.GetFileData(newPath);
+
+                    // Find out if the shortcut is pointing to a directory or file
+                    if (newPathData.IsDirectory)
+                    {
+                        // add to our physical locations
+                        args.AdditionalLocations.Add(newPath);
+
+                        // If we're flattening then get the shortcut's children
+                        if (flattenShortcuts)
+                        {
+                            returnChildren.Add(file);
+                            ItemResolveEventArgs newArgs = new ItemResolveEventArgs()
+                            {
+                                FileSystemChildren = FileData.GetFileSystemEntries(newPath, "*").ToArray()
+                            };
+
+                            resolvedShortcuts.AddRange(FilterChildFileSystemEntries(newArgs, false).FileSystemChildren);
+                        }
+                        else
+                        {
+                            returnChildren.Add(newPathData);
+                        }
+                    }
+                    else
+                    {
+                        returnChildren.Add(newPathData);
+                    }
+                }
+                else
+                {
+                    //not a shortcut check to see if we should filter it out
+                    if (EntityResolutionHelper.ShouldResolvePath(file))
+                    {
+                        returnChildren.Add(file);
+                    }
+                    else
+                    {
+                        //filtered - see if it is one of our "indicator" folders and mark it now - no reason to search for it again
+                        args.IsBDFolder |= file.cFileName.Equals("bdmv", StringComparison.OrdinalIgnoreCase);
+                        args.IsDVDFolder |= file.cFileName.Equals("video_ts", StringComparison.OrdinalIgnoreCase);
+                    }
+                }
+            }
+
+            if (resolvedShortcuts.Count > 0)
+            {
+                resolvedShortcuts.InsertRange(0, returnChildren);
+                args.FileSystemChildren = resolvedShortcuts.ToArray();
+            }
+            else
+            {
+                args.FileSystemChildren = returnChildren.ToArray();
+            }
+            return args;
+        }
+
+    }
+}
-- 
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