71 lines
2.4 KiB
C#
71 lines
2.4 KiB
C#
using System;
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using System.IO;
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using System.Linq;
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using Emby.Naming.Common;
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namespace Emby.Naming.Subtitles
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{
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/// <summary>
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/// Subtitle Parser class.
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/// </summary>
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public class SubtitleParser
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{
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private readonly NamingOptions _options;
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/// <summary>
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/// Initializes a new instance of the <see cref="SubtitleParser"/> class.
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/// </summary>
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/// <param name="options"><see cref="NamingOptions"/> object containing SubtitleFileExtensions, SubtitleDefaultFlags, SubtitleForcedFlags and SubtitleFlagDelimiters.</param>
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public SubtitleParser(NamingOptions options)
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{
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_options = options;
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}
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/// <summary>
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/// Parse file to determine if is subtitle and <see cref="SubtitleInfo"/>.
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/// </summary>
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/// <param name="path">Path to file.</param>
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/// <returns>Returns null or <see cref="SubtitleInfo"/> object if parsing is successful.</returns>
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public SubtitleInfo? ParseFile(string path)
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{
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if (path.Length == 0)
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{
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return null;
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}
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var extension = Path.GetExtension(path);
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if (!_options.SubtitleFileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
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{
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return null;
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}
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var flags = GetFlags(path);
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var info = new SubtitleInfo(
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path,
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_options.SubtitleDefaultFlags.Any(i => flags.Contains(i, StringComparer.OrdinalIgnoreCase)),
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_options.SubtitleForcedFlags.Any(i => flags.Contains(i, StringComparer.OrdinalIgnoreCase)));
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var parts = flags.Where(i => !_options.SubtitleDefaultFlags.Contains(i, StringComparer.OrdinalIgnoreCase)
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&& !_options.SubtitleForcedFlags.Contains(i, StringComparer.OrdinalIgnoreCase))
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.ToList();
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// Should have a name, language and file extension
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if (parts.Count >= 3)
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{
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info.Language = parts[^2];
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}
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return info;
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}
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private string[] GetFlags(string path)
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{
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// Note: the tags need be be surrounded be either a space ( ), hyphen -, dot . or underscore _.
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var file = Path.GetFileName(path);
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return file.Split(_options.SubtitleFlagDelimiters, StringSplitOptions.RemoveEmptyEntries);
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}
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}
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}
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