mirror of https://github.com/lidarr/Lidarr
283 lines
8.8 KiB
C#
283 lines
8.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Xml.Linq;
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using NzbDrone.Common.Extensions;
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using NzbDrone.Core.Indexers.Exceptions;
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using NzbDrone.Core.Languages;
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using NzbDrone.Core.Parser;
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using NzbDrone.Core.Parser.Model;
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namespace NzbDrone.Core.Indexers.Torznab
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{
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public class TorznabRssParser : TorrentRssParser
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{
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public const string ns = "{http://torznab.com/schemas/2015/feed}";
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public TorznabRssParser()
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{
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UseEnclosureUrl = true;
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}
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protected override bool PreProcess(IndexerResponse indexerResponse)
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{
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if (indexerResponse.HttpResponse.HasHttpError &&
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(indexerResponse.HttpResponse.Headers.ContentType == null || !indexerResponse.HttpResponse.Headers.ContentType.Contains("xml")))
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{
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base.PreProcess(indexerResponse);
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}
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var xdoc = LoadXmlDocument(indexerResponse);
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var error = xdoc.Descendants("error").FirstOrDefault();
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if (error == null)
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{
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return true;
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}
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var code = Convert.ToInt32(error.Attribute("code").Value);
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var errorMessage = error.Attribute("description").Value;
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if (code >= 100 && code <= 199)
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{
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throw new ApiKeyException("Invalid API key");
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}
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if (!indexerResponse.Request.Url.FullUri.Contains("apikey=") && errorMessage == "Missing parameter")
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{
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throw new ApiKeyException("Indexer requires an API key");
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}
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if (errorMessage == "Request limit reached")
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{
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throw new RequestLimitReachedException("API limit reached");
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}
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throw new TorznabException("Torznab error detected: {0}", errorMessage);
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}
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protected override bool PostProcess(IndexerResponse indexerResponse, List<XElement> items, List<ReleaseInfo> releases)
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{
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var enclosureTypes = items.SelectMany(GetEnclosures).Select(v => v.Type).Distinct().ToArray();
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if (enclosureTypes.Any() && enclosureTypes.Intersect(PreferredEnclosureMimeTypes).Empty())
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{
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if (enclosureTypes.Intersect(UsenetEnclosureMimeTypes).Any())
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{
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_logger.Warn("{0} does not contain {1}, found {2}, did you intend to add a Newznab indexer?", indexerResponse.Request.Url, TorrentEnclosureMimeType, enclosureTypes[0]);
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return false;
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}
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_logger.Warn("{0} does not contain {1}, found {2}.", indexerResponse.Request.Url, TorrentEnclosureMimeType, enclosureTypes[0]);
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}
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return true;
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}
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protected override ReleaseInfo ProcessItem(XElement item, ReleaseInfo releaseInfo)
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{
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var torrentInfo = base.ProcessItem(item, releaseInfo) as TorrentInfo;
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if (torrentInfo != null)
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{
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torrentInfo.IndexerFlags = GetFlags(item);
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}
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return torrentInfo;
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}
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protected override string GetInfoUrl(XElement item)
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{
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return ParseUrl(item.TryGetValue("comments").TrimEnd("#comments"));
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}
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protected override string GetCommentUrl(XElement item)
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{
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return ParseUrl(item.TryGetValue("comments"));
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}
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protected override List<Language> GetLanguages(XElement item)
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{
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var languages = TryGetMultipleTorznabAttributes(item, "language");
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var results = new List<Language>();
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// Try to find <language> elements for some indexers that suck at following the rules.
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if (languages.Count == 0)
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{
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languages = item.Elements("language").Select(e => e.Value).ToList();
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}
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foreach (var language in languages)
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{
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var mappedLanguage = IsoLanguages.FindByName(language)?.Language ?? null;
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if (mappedLanguage != null)
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{
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results.Add(mappedLanguage);
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}
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}
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return results;
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}
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protected override long GetSize(XElement item)
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{
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var sizeString = TryGetTorznabAttribute(item, "size");
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if (!sizeString.IsNullOrWhiteSpace() && long.TryParse(sizeString, out var size))
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{
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return size;
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}
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size = GetEnclosureLength(item);
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return size;
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}
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protected override DateTime GetPublishDate(XElement item)
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{
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return base.GetPublishDate(item);
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}
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protected override string GetDownloadUrl(XElement item)
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{
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var url = base.GetDownloadUrl(item);
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if (!Uri.IsWellFormedUriString(url, UriKind.Absolute))
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{
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url = ParseUrl((string)item.Element("enclosure").Attribute("url"));
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}
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return url;
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}
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protected override string GetInfoHash(XElement item)
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{
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return TryGetTorznabAttribute(item, "infohash");
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}
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protected override string GetMagnetUrl(XElement item)
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{
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return TryGetTorznabAttribute(item, "magneturl");
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}
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protected override int? GetSeeders(XElement item)
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{
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var seeders = TryGetTorznabAttribute(item, "seeders");
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if (seeders.IsNotNullOrWhiteSpace())
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{
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return int.Parse(seeders);
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}
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return base.GetSeeders(item);
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}
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protected override int? GetPeers(XElement item)
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{
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var peers = TryGetTorznabAttribute(item, "peers");
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if (peers.IsNotNullOrWhiteSpace())
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{
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return int.Parse(peers);
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}
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var seeders = TryGetTorznabAttribute(item, "seeders");
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var leechers = TryGetTorznabAttribute(item, "leechers");
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if (seeders.IsNotNullOrWhiteSpace() && leechers.IsNotNullOrWhiteSpace())
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{
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return int.Parse(seeders) + int.Parse(leechers);
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}
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return base.GetPeers(item);
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}
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protected IndexerFlags GetFlags(XElement item)
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{
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IndexerFlags flags = 0;
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var downloadFactor = TryGetFloatTorznabAttribute(item, "downloadvolumefactor", 1);
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var uploadFactor = TryGetFloatTorznabAttribute(item, "uploadvolumefactor", 1);
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if (downloadFactor == 0.5)
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{
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flags |= IndexerFlags.Halfleech;
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}
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if (downloadFactor == 0.75)
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{
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flags |= IndexerFlags.Freeleech25;
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}
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if (downloadFactor == 0.25)
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{
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flags |= IndexerFlags.Freeleech75;
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}
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if (downloadFactor == 0.0)
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{
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flags |= IndexerFlags.Freeleech;
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}
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if (uploadFactor == 2.0)
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{
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flags |= IndexerFlags.DoubleUpload;
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}
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var tags = TryGetMultipleTorznabAttributes(item, "tag");
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if (tags.Any(t => t.EqualsIgnoreCase("internal")))
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{
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flags |= IndexerFlags.Internal;
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}
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if (tags.Any(t => t.EqualsIgnoreCase("scene")))
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{
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flags |= IndexerFlags.Scene;
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}
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return flags;
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}
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protected string TryGetTorznabAttribute(XElement item, string key, string defaultValue = "")
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{
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var attrElement = item.Elements(ns + "attr").FirstOrDefault(e => e.Attribute("name").Value.Equals(key, StringComparison.OrdinalIgnoreCase));
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if (attrElement != null)
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{
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var attrValue = attrElement.Attribute("value");
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if (attrValue != null)
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{
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return attrValue.Value;
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}
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}
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return defaultValue;
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}
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protected float TryGetFloatTorznabAttribute(XElement item, string key, float defaultValue = 0)
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{
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var attr = TryGetTorznabAttribute(item, key, defaultValue.ToString());
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return float.TryParse(attr, out var result) ? result : defaultValue;
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}
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protected List<string> TryGetMultipleTorznabAttributes(XElement item, string key)
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{
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var attrElements = item.Elements(ns + "attr").Where(e => e.Attribute("name").Value.Equals(key, StringComparison.OrdinalIgnoreCase));
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var results = new List<string>();
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foreach (var element in attrElements)
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{
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var attrValue = element.Attribute("value");
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if (attrValue != null)
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{
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results.Add(attrValue.Value);
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}
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}
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return results;
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}
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}
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}
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