| | | 1 | | using System; |
| | | 2 | | using Emby.Naming.Common; |
| | | 3 | | |
| | | 4 | | namespace Emby.Naming.Video |
| | | 5 | | { |
| | | 6 | | /// <summary> |
| | | 7 | | /// Parse 3D format related flags. |
| | | 8 | | /// </summary> |
| | | 9 | | public static class Format3DParser |
| | | 10 | | { |
| | | 11 | | // Static default result to save on allocation costs. |
| | 2 | 12 | | private static readonly Format3DResult _defaultResult = new(false, null); |
| | | 13 | | |
| | | 14 | | /// <summary> |
| | | 15 | | /// Parse 3D format related flags. |
| | | 16 | | /// </summary> |
| | | 17 | | /// <param name="path">Path to file.</param> |
| | | 18 | | /// <param name="namingOptions">The naming options.</param> |
| | | 19 | | /// <returns>Returns <see cref="Format3DResult"/> object.</returns> |
| | | 20 | | public static Format3DResult Parse(ReadOnlySpan<char> path, NamingOptions namingOptions) |
| | | 21 | | { |
| | 497 | 22 | | int oldLen = namingOptions.VideoFlagDelimiters.Length; |
| | 497 | 23 | | Span<char> delimiters = stackalloc char[oldLen + 1]; |
| | 497 | 24 | | namingOptions.VideoFlagDelimiters.AsSpan().CopyTo(delimiters); |
| | 497 | 25 | | delimiters[oldLen] = ' '; |
| | | 26 | | |
| | 497 | 27 | | return Parse(path, delimiters, namingOptions); |
| | | 28 | | } |
| | | 29 | | |
| | | 30 | | private static Format3DResult Parse(ReadOnlySpan<char> path, ReadOnlySpan<char> delimiters, NamingOptions naming |
| | | 31 | | { |
| | 12370 | 32 | | foreach (var rule in namingOptions.Format3DRules) |
| | | 33 | | { |
| | 5705 | 34 | | var result = Parse(path, rule, delimiters); |
| | | 35 | | |
| | 5705 | 36 | | if (result.Is3D) |
| | | 37 | | { |
| | 34 | 38 | | return result; |
| | | 39 | | } |
| | | 40 | | } |
| | | 41 | | |
| | 463 | 42 | | return _defaultResult; |
| | | 43 | | } |
| | | 44 | | |
| | | 45 | | private static Format3DResult Parse(ReadOnlySpan<char> path, Format3DRule rule, ReadOnlySpan<char> delimiters) |
| | | 46 | | { |
| | 5705 | 47 | | bool is3D = false; |
| | 5705 | 48 | | string? format3D = null; |
| | | 49 | | |
| | | 50 | | // If there's no preceding token we just consider it found |
| | 5705 | 51 | | var foundPrefix = string.IsNullOrEmpty(rule.PrecedingToken); |
| | 53233 | 52 | | while (path.Length > 0) |
| | | 53 | | { |
| | 47562 | 54 | | var index = path.IndexOfAny(delimiters); |
| | | 55 | | ReadOnlySpan<char> currentSlice; |
| | 47562 | 56 | | if (index == -1) |
| | | 57 | | { |
| | | 58 | | // No delimiter left, the last token is the remainder of the path |
| | 5676 | 59 | | currentSlice = path; |
| | 5676 | 60 | | path = default; |
| | | 61 | | } |
| | | 62 | | else |
| | | 63 | | { |
| | 41886 | 64 | | currentSlice = path[..index]; |
| | 41886 | 65 | | path = path[(index + 1)..]; |
| | | 66 | | } |
| | | 67 | | |
| | 47562 | 68 | | if (!foundPrefix) |
| | | 69 | | { |
| | 16049 | 70 | | foundPrefix = currentSlice.Equals(rule.PrecedingToken, StringComparison.OrdinalIgnoreCase); |
| | 16049 | 71 | | continue; |
| | | 72 | | } |
| | | 73 | | |
| | 31513 | 74 | | is3D = foundPrefix && currentSlice.Equals(rule.Token, StringComparison.OrdinalIgnoreCase); |
| | | 75 | | |
| | 31513 | 76 | | if (is3D) |
| | | 77 | | { |
| | 34 | 78 | | format3D = rule.Token; |
| | 34 | 79 | | break; |
| | | 80 | | } |
| | | 81 | | } |
| | | 82 | | |
| | 5705 | 83 | | return is3D ? new Format3DResult(true, format3D) : _defaultResult; |
| | | 84 | | } |
| | | 85 | | } |
| | | 86 | | } |