repo creation with initial code after cloning public repo

2026-02-19 07:36:25 -05:00
commit 460884fea3
2860 changed files with 650825 additions and 0 deletions
@@ -0,0 +1,81 @@
+using System;
+using Emby.Naming.Common;
+
+namespace Emby.Naming.Video
+{
+    /// <summary>
+    /// Parse 3D format related flags.
+    /// </summary>
+    public static class Format3DParser
+    {
+        // Static default result to save on allocation costs.
+        private static readonly Format3DResult _defaultResult = new(false, null);
+
+        /// <summary>
+        /// Parse 3D format related flags.
+        /// </summary>
+        /// <param name="path">Path to file.</param>
+        /// <param name="namingOptions">The naming options.</param>
+        /// <returns>Returns <see cref="Format3DResult"/> object.</returns>
+        public static Format3DResult Parse(ReadOnlySpan<char> path, NamingOptions namingOptions)
+        {
+            int oldLen = namingOptions.VideoFlagDelimiters.Length;
+            Span<char> delimiters = stackalloc char[oldLen + 1];
+            namingOptions.VideoFlagDelimiters.AsSpan().CopyTo(delimiters);
+            delimiters[oldLen] = ' ';
+
+            return Parse(path, delimiters, namingOptions);
+        }
+
+        private static Format3DResult Parse(ReadOnlySpan<char> path, ReadOnlySpan<char> delimiters, NamingOptions namingOptions)
+        {
+            foreach (var rule in namingOptions.Format3DRules)
+            {
+                var result = Parse(path, rule, delimiters);
+
+                if (result.Is3D)
+                {
+                    return result;
+                }
+            }
+
+            return _defaultResult;
+        }
+
+        private static Format3DResult Parse(ReadOnlySpan<char> path, Format3DRule rule, ReadOnlySpan<char> delimiters)
+        {
+            bool is3D = false;
+            string? format3D = null;
+
+            // If there's no preceding token we just consider it found
+            var foundPrefix = string.IsNullOrEmpty(rule.PrecedingToken);
+            while (path.Length > 0)
+            {
+                var index = path.IndexOfAny(delimiters);
+                if (index == -1)
+                {
+                    index = path.Length - 1;
+                }
+
+                var currentSlice = path[..index];
+                path = path[(index + 1)..];
+
+                if (!foundPrefix)
+                {
+                    foundPrefix = currentSlice.Equals(rule.PrecedingToken, StringComparison.OrdinalIgnoreCase);
+                    continue;
+                }
+
+                is3D = foundPrefix && currentSlice.Equals(rule.Token, StringComparison.OrdinalIgnoreCase);
+
+                if (is3D)
+                {
+                    format3D = rule.Token;
+                    break;
+                }
+            }
+
+            return is3D ? new Format3DResult(true, format3D) : _defaultResult;
+        }
+    }
+}