Use glob patterns to ignore files

Emby.Server.Implementations/Emby.Server.Implementations.csproj

@@ -43,6 +43,7 @@
     <PackageReference Include="ServiceStack.Text.Core" Version="5.8.0" />
     <PackageReference Include="sharpcompress" Version="0.25.0" />
     <PackageReference Include="SQLitePCL.pretty.netstandard" Version="2.1.0" />
+    <PackageReference Include="DotNet.Glob" Version="3.0.9" />
   </ItemGroup>
 
   <ItemGroup>

Emby.Server.Implementations/IO/LibraryMonitor.cs

@@ -11,6 +11,7 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Plugins;
 using MediaBrowser.Model.IO;
+using Emby.Server.Implementations.Library;
 using Microsoft.Extensions.Logging;
 
 namespace Emby.Server.Implementations.IO
@@ -37,38 +38,6 @@ namespace Emby.Server.Implementations.IO
         /// </summary>
         private readonly ConcurrentDictionary<string, string> _tempIgnoredPaths = new ConcurrentDictionary<string, string>(StringComparer.OrdinalIgnoreCase);
 
-        /// <summary>
-        /// Any file name ending in any of these will be ignored by the watchers.
-        /// </summary>
-        private static readonly HashSet<string> _alwaysIgnoreFiles = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
-        {
-            "small.jpg",
-            "albumart.jpg",
-
-            // WMC temp recording directories that will constantly be written to
-            "TempRec",
-            "TempSBE"
-        };
-
-        private static readonly string[] _alwaysIgnoreSubstrings = new string[]
-        {
-            // Synology
-            "eaDir",
-            "#recycle",
-            ".wd_tv",
-            ".actors"
-        };
-
-        private static readonly HashSet<string> _alwaysIgnoreExtensions = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
-        {
-            // thumbs.db
-            ".db",
-
-            // bts sync files
-            ".bts",
-            ".sync"
-        };
-
         /// <summary>
         /// Add the path to our temporary ignore list.  Use when writing to a path within our listening scope.
         /// </summary>
@@ -395,12 +364,7 @@ namespace Emby.Server.Implementations.IO
                 throw new ArgumentNullException(nameof(path));
             }
 
-            var filename = Path.GetFileName(path);
-
-            var monitorPath = !string.IsNullOrEmpty(filename) &&
-                !_alwaysIgnoreFiles.Contains(filename) &&
-                !_alwaysIgnoreExtensions.Contains(Path.GetExtension(path)) &&
-                _alwaysIgnoreSubstrings.All(i => path.IndexOf(i, StringComparison.OrdinalIgnoreCase) == -1);
+            var monitorPath = !IgnorePatterns.ShouldIgnore(path);
 
             // Ignore certain files
             var tempIgnorePaths = _tempIgnoredPaths.Keys.ToList();

Emby.Server.Implementations/Library/CoreResolutionIgnoreRule.cs

@@ -1,7 +1,5 @@
 using System;
 using System.IO;
-using System.Linq;
-using System.Text.RegularExpressions;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Resolvers;
@@ -16,32 +14,6 @@ namespace Emby.Server.Implementations.Library
     {
         private readonly ILibraryManager _libraryManager;
 
-        /// <summary>
-        /// Any folder named in this list will be ignored
-        /// </summary>
-        private static readonly string[] _ignoreFolders =
-        {
-                "metadata",
-                "ps3_update",
-                "ps3_vprm",
-                "extrafanart",
-                "extrathumbs",
-                ".actors",
-                ".wd_tv",
-
-                // Synology
-                "@eaDir",
-                "eaDir",
-                "#recycle",
-
-                // Qnap
-                "@Recycle",
-                ".@__thumb",
-                "$RECYCLE.BIN",
-                "System Volume Information",
-                ".grab",
-        };
-
         /// <summary>
         /// Initializes a new instance of the <see cref="CoreResolutionIgnoreRule"/> class.
         /// </summary>
@@ -60,23 +32,15 @@ namespace Emby.Server.Implementations.Library
                 return false;
             }
 
-            var filename = fileInfo.Name;
-
-            // Ignore hidden files on UNIX
-            if (Environment.OSVersion.Platform != PlatformID.Win32NT
-                && filename[0] == '.')
+            if (IgnorePatterns.ShouldIgnore(fileInfo.FullName))
             {
                 return true;
             }
 
+            var filename = fileInfo.Name;
+
             if (fileInfo.IsDirectory)
             {
-                // Ignore any folders in our list
-                if (_ignoreFolders.Contains(filename, StringComparer.OrdinalIgnoreCase))
-                {
-                    return true;
-                }
-
                 if (parent != null)
                 {
                     // Ignore trailer folders but allow it at the collection level
@@ -109,11 +73,6 @@ namespace Emby.Server.Implementations.Library
                         return true;
                     }
                 }
-
-                // Ignore samples
-                Match m = Regex.Match(filename, @"\bsample\b", RegexOptions.IgnoreCase);
-
-                return m.Success;
             }
 
             return false;

Emby.Server.Implementations/Library/IgnorePatterns.cs

@@ -0,0 +1,73 @@
+using System.Linq;
+using DotNet.Globbing;
+
+namespace Emby.Server.Implementations.Library
+{
+    /// <summary>
+    /// Glob patterns for files to ignore
+    /// </summary>
+    public static class IgnorePatterns
+    {
+        /// <summary>
+        /// Files matching these glob patterns will be ignored
+        /// </summary>
+        public static readonly string[] Patterns = new string[]
+        {
+            "**/small.jpg",
+            "**/albumart.jpg",
+            "**/*sample*",
+
+            // Directories
+            "**/metadata/**",
+            "**/ps3_update/**",
+            "**/ps3_vprm/**",
+            "**/extrafanart/**",
+            "**/extrathumbs/**",
+            "**/.actors/**",
+            "**/.wd_tv/**",
+
+            // WMC temp recording directories that will constantly be written to
+            "**/TempRec/**",
+            "**/TempSBE/**",
+
+            // Synology
+            "**/eaDir/**",
+            "**/@eaDir/**",
+            "**/#recycle/**",
+
+            // Qnap
+            "**/@Recycle/**",
+            "**/.@__thumb/**",
+            "**/$RECYCLE.BIN/**",
+            "**/System Volume Information/**",
+            "**/.grab/**",
+
+            // Unix hidden files and directories
+            "**/.*/**",
+
+            // thumbs.db
+            "**/thumbs.db",
+
+            // bts sync files
+            "**/*.bts",
+            "**/*.sync",
+        };
+
+        private static readonly GlobOptions _globOptions = new GlobOptions
+        {
+            Evaluation = {
+                CaseInsensitive = true
+            }
+        };
+
+        private static readonly Glob[] _globs = Patterns.Select(p => Glob.Parse(p, _globOptions)).ToArray();
+
+        /// <summary>
+        /// Returns true if the supplied path should be ignored
+        /// </summary>
+        public static bool ShouldIgnore(string path)
+        {
+            return _globs.Any(g => g.IsMatch(path));
+        }
+    }
+}

tests/Jellyfin.Server.Implementations.Tests/Library/IgnorePatternsTests.cs

@@ -0,0 +1,21 @@
+using Emby.Server.Implementations.Library;
+using Xunit;
+
+namespace Jellyfin.Server.Implementations.Tests.Library
+{
+    public class IgnorePatternsTests
+    {
+        [Theory]
+        [InlineData("/media/small.jpg", true)]
+        [InlineData("/media/movies/#Recycle/test.txt", true)]
+        [InlineData("/media/movies/#recycle/", true)]
+        [InlineData("thumbs.db", true)]
+        [InlineData(@"C:\media\movies\movie.avi", false)]
+        [InlineData("/media/.hiddendir/file.mp4", true)]
+        [InlineData("/media/dir/.hiddenfile.mp4", true)]
+        public void PathIgnored(string path, bool expected)
+        {
+            Assert.Equal(expected, IgnorePatterns.ShouldIgnore(path));
+        }
+    }
+}