120 lines
3.9 KiB
C#
120 lines
3.9 KiB
C#
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#nullable enable
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using System;
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using System.Diagnostics.CodeAnalysis;
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namespace MediaBrowser.Common.Providers
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{
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/// <summary>
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/// Parsers for provider ids.
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/// </summary>
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public static class ProviderIdParsers
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{
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/// <summary>
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/// Parses an IMDb id from a string.
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/// </summary>
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/// <param name="text">The text to parse.</param>
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/// <param name="imdbId">The parsed IMDb id.</param>
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/// <returns>True if parsing was successful, false otherwise.</returns>
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public static bool TryParseImdbId(string text, [NotNullWhen(true)] out string? imdbId)
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{
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var span = text.AsSpan();
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var tt = "tt".AsSpan();
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while (true)
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{
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var ttPos = span.IndexOf(tt);
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if (ttPos == -1)
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{
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imdbId = default;
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return false;
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}
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span = span.Slice(ttPos + tt.Length);
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int i = 0;
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// IMDb id has a maximum of 8 digits
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int max = span.Length > 8 ? 8 : span.Length;
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for (; i < max; i++)
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{
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var c = span[i];
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if (c < '0' || c > '9')
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{
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break;
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}
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}
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// IMDb id has a minimum of 7 digits
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if (i >= 7)
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{
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imdbId = string.Concat(tt, span.Slice(0, i));
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return true;
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}
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}
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}
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/// <summary>
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/// Parses an TMDb id from a movie url.
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/// </summary>
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/// <param name="text">The text with the url to parse.</param>
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/// <param name="tmdbId">The parsed TMDb id.</param>
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/// <returns>True if parsing was successful, false otherwise.</returns>
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public static bool TryParseTmdbMovieId(string text, [NotNullWhen(true)] out string? tmdbId)
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=> TryParseProviderId(text, "themoviedb.org/movie/", out tmdbId);
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/// <summary>
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/// Parses an TMDb id from a series url.
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/// </summary>
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/// <param name="text">The text with the url to parse.</param>
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/// <param name="tmdbId">The parsed TMDb id.</param>
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/// <returns>True if parsing was successful, false otherwise.</returns>
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public static bool TryParseTmdbSeriesId(string text, [NotNullWhen(true)] out string? tmdbId)
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=> TryParseProviderId(text, "themoviedb.org/tv/", out tmdbId);
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/// <summary>
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/// Parses an TVDb id from a url.
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/// </summary>
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/// <param name="text">The text with the url to parse.</param>
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/// <param name="tvdbId">The parsed TVDb id.</param>
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/// <returns>True if parsing was successful, false otherwise.</returns>
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public static bool TryParseTvdbId(string text, [NotNullWhen(true)] out string? tvdbId)
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=> TryParseProviderId(text, "thetvdb.com/?tab=series&id=", out tvdbId);
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private static bool TryParseProviderId(string text, string searchString, [NotNullWhen(true)] out string? providerId)
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{
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var span = text.AsSpan();
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var searchSpan = searchString.AsSpan();
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while (true)
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{
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var searchPos = span.IndexOf(searchSpan);
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if (searchPos == -1)
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{
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providerId = default;
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return false;
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}
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span = span.Slice(searchPos + searchSpan.Length);
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int i = 0;
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for (; i < span.Length; i++)
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{
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var c = span[i];
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if (c < '0' || c > '9')
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{
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break;
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}
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}
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if (i >= 1)
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{
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providerId = span.Slice(0, i).ToString();
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return true;
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}
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}
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}
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}
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}
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