1 files changed, 125 insertions, 0 deletions
diff --git a/Emby.Server.Implementations/Library/IgnorePatterns.cs b/Emby.Server.Implementations/Library/IgnorePatterns.cs
new file mode 100644
index 000000000..e30a67593
--- /dev/null
+++ b/Emby.Server.Implementations/Library/IgnorePatterns.cs
@@ -0,0 +1,125 @@
+#nullable enable
+
+using System;
+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>
+        private static readonly string[] _patterns =
+        {
+            "**/small.jpg",
+            "**/albumart.jpg",
+
+            // We have neither non-greedy matching or character group repetitions, working around that here.
+            // https://github.com/dazinator/DotNet.Glob#patterns
+            // .*/sample\..{1,5}
+            "**/sample.?",
+            "**/sample.??",
+            "**/sample.???", // Matches sample.mkv
+            "**/sample.????", // Matches sample.webm
+            "**/sample.?????",
+            "**/*.sample.?",
+            "**/*.sample.??",
+            "**/*.sample.???",
+            "**/*.sample.????",
+            "**/*.sample.?????",
+            "**/sample/*",
+
+            // Directories
+            "**/metadata/**",
+            "**/metadata",
+            "**/ps3_update/**",
+            "**/ps3_update",
+            "**/ps3_vprm/**",
+            "**/ps3_vprm",
+            "**/extrafanart/**",
+            "**/extrafanart",
+            "**/extrathumbs/**",
+            "**/extrathumbs",
+            "**/.actors/**",
+            "**/.actors",
+            "**/.wd_tv/**",
+            "**/.wd_tv",
+            "**/lost+found/**",
+            "**/lost+found",
+
+            // WMC temp recording directories that will constantly be written to
+            "**/TempRec/**",
+            "**/TempRec",
+            "**/TempSBE/**",
+            "**/TempSBE",
+
+            // Synology
+            "**/eaDir/**",
+            "**/eaDir",
+            "**/@eaDir/**",
+            "**/@eaDir",
+            "**/#recycle/**",
+            "**/#recycle",
+
+            // Qnap
+            "**/@Recycle/**",
+            "**/@Recycle",
+            "**/.@__thumb/**",
+            "**/.@__thumb",
+            "**/$RECYCLE.BIN/**",
+            "**/$RECYCLE.BIN",
+            "**/System Volume Information/**",
+            "**/System Volume Information",
+            "**/.grab/**",
+            "**/.grab",
+
+            // Unix hidden files
+            "**/.*",
+
+            // Mac - if you ever remove the above.
+            // "**/._*",
+            // "**/.DS_Store",
+
+            // 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>
+        /// <param name="path">The path to test.</param>
+        /// <returns>Whether to ignore the path.</returns>
+        public static bool ShouldIgnore(ReadOnlySpan<char> path)
+        {
+            int len = _globs.Length;
+            for (int i = 0; i < len; i++)
+            {
+                if (_globs[i].IsMatch(path))
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}