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119 lines
4.3 KiB
C#
119 lines
4.3 KiB
C#
using MediaBrowser.Controller.Entities.Audio;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Model.Entities;
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using System;
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using System.Globalization;
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using System.Linq;
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using System.Net;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Xml;
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namespace MediaBrowser.Providers.Music
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{
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public class MusicBrainzArtistProvider : IRemoteMetadataProvider<MusicArtist>
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{
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public async Task<MetadataResult<MusicArtist>> GetMetadata(ItemId id, CancellationToken cancellationToken)
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{
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var result = new MetadataResult<MusicArtist>();
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var musicBrainzId = id.GetProviderId(MetadataProviders.Musicbrainz) ?? await FindId(id, cancellationToken).ConfigureAwait(false);
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if (!string.IsNullOrWhiteSpace(musicBrainzId))
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{
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cancellationToken.ThrowIfCancellationRequested();
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result.Item = new MusicArtist();
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result.HasMetadata = true;
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result.Item.SetProviderId(MetadataProviders.Musicbrainz, musicBrainzId);
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}
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return result;
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}
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/// <summary>
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/// Finds the id from music brainz.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task{System.String}.</returns>
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private async Task<string> FindId(ItemId item, CancellationToken cancellationToken)
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{
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// They seem to throw bad request failures on any term with a slash
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var nameToSearch = item.Name.Replace('/', ' ');
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var url = String.Format("http://www.musicbrainz.org/ws/2/artist/?query=artist:\"{0}\"", UrlEncode(nameToSearch));
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var doc = await MusicBrainzAlbumProvider.Current.GetMusicBrainzResponse(url, cancellationToken).ConfigureAwait(false);
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var ns = new XmlNamespaceManager(doc.NameTable);
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ns.AddNamespace("mb", "http://musicbrainz.org/ns/mmd-2.0#");
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var node = doc.SelectSingleNode("//mb:artist-list/mb:artist/@id", ns);
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if (node != null && node.Value != null)
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{
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return node.Value;
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}
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if (HasDiacritics(item.Name))
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{
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// Try again using the search with accent characters url
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url = String.Format("http://www.musicbrainz.org/ws/2/artist/?query=artistaccent:\"{0}\"", UrlEncode(nameToSearch));
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doc = await MusicBrainzAlbumProvider.Current.GetMusicBrainzResponse(url, cancellationToken).ConfigureAwait(false);
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ns = new XmlNamespaceManager(doc.NameTable);
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ns.AddNamespace("mb", "http://musicbrainz.org/ns/mmd-2.0#");
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node = doc.SelectSingleNode("//mb:artist-list/mb:artist/@id", ns);
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if (node != null && node.Value != null)
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{
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return node.Value;
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}
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}
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return null;
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}
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/// <summary>
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/// Determines whether the specified text has diacritics.
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/// </summary>
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/// <param name="text">The text.</param>
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/// <returns><c>true</c> if the specified text has diacritics; otherwise, <c>false</c>.</returns>
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private bool HasDiacritics(string text)
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{
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return !String.Equals(text, RemoveDiacritics(text), StringComparison.Ordinal);
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}
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/// <summary>
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/// Removes the diacritics.
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/// </summary>
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/// <param name="text">The text.</param>
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/// <returns>System.String.</returns>
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private string RemoveDiacritics(string text)
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{
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return String.Concat(
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text.Normalize(NormalizationForm.FormD)
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.Where(ch => CharUnicodeInfo.GetUnicodeCategory(ch) !=
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UnicodeCategory.NonSpacingMark)
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).Normalize(NormalizationForm.FormC);
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}
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/// <summary>
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/// Encodes an URL.
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/// </summary>
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/// <param name="name">The name.</param>
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/// <returns>System.String.</returns>
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private string UrlEncode(string name)
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{
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return WebUtility.UrlEncode(name);
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}
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public string Name
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{
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get { return "MusicBrainz"; }
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}
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}
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}
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