98 lines
3.0 KiB
C#
98 lines
3.0 KiB
C#
using System;
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using System.Linq;
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using Emby.Naming.Common;
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namespace Emby.Naming.Video
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{
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/// <summary>
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/// Parste 3D format related flags.
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/// </summary>
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public class Format3DParser
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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="Format3DParser"/> class.
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/// </summary>
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/// <param name="options"><see cref="NamingOptions"/> object containing VideoFlagDelimiters and passes options to <see cref="FlagParser"/>.</param>
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public Format3DParser(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 3D format related flags.
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/// </summary>
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/// <param name="path">Path to file.</param>
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/// <returns>Returns <see cref="Format3DResult"/> object.</returns>
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public Format3DResult Parse(string path)
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{
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int oldLen = _options.VideoFlagDelimiters.Length;
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var delimiters = new char[oldLen + 1];
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_options.VideoFlagDelimiters.CopyTo(delimiters, 0);
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delimiters[oldLen] = ' ';
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return Parse(new FlagParser(_options).GetFlags(path, delimiters));
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}
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internal Format3DResult Parse(string[] videoFlags)
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{
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foreach (var rule in _options.Format3DRules)
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{
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var result = Parse(videoFlags, rule);
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if (result.Is3D)
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{
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return result;
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}
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}
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return new Format3DResult();
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}
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private static Format3DResult Parse(string[] videoFlags, Format3DRule rule)
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{
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var result = new Format3DResult();
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if (string.IsNullOrEmpty(rule.PrecedingToken))
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{
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result.Format3D = new[] { rule.Token }.FirstOrDefault(i => videoFlags.Contains(i, StringComparer.OrdinalIgnoreCase));
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result.Is3D = !string.IsNullOrEmpty(result.Format3D);
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if (result.Is3D)
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{
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result.Tokens.Add(rule.Token);
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}
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}
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else
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{
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var foundPrefix = false;
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string? format = null;
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foreach (var flag in videoFlags)
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{
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if (foundPrefix)
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{
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result.Tokens.Add(rule.PrecedingToken);
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if (string.Equals(rule.Token, flag, StringComparison.OrdinalIgnoreCase))
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{
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format = flag;
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result.Tokens.Add(rule.Token);
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}
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break;
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}
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foundPrefix = string.Equals(flag, rule.PrecedingToken, StringComparison.OrdinalIgnoreCase);
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}
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result.Is3D = foundPrefix && !string.IsNullOrEmpty(format);
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result.Format3D = format;
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}
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return result;
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}
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}
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}
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