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using System;
using System.IO;
using System.Text;
using System.Threading;
using System.Xml;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Extensions;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Providers;
using Microsoft.Extensions.Logging;
namespace MediaBrowser.XbmcMetadata.Parsers
{
/// <summary>
/// Nfo parser for episodes.
/// </summary>
public class EpisodeNfoParser : BaseNfoParser<Episode>
{
/// <summary>
/// Initializes a new instance of the <see cref="EpisodeNfoParser"/> class.
/// </summary>
/// <param name="logger">Instance of the <see cref="ILogger{BaseNfoParser}"/> interface.</param>
/// <param name="config">Instance of the <see cref="IConfigurationManager"/> interface.</param>
/// <param name="providerManager">Instance of the <see cref="IProviderManager"/> interface.</param>
/// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
/// <param name="userDataManager">Instance of the <see cref="IUserDataManager"/> interface.</param>
/// <param name="directoryService">Instance of the <see cref="IDirectoryService"/> interface.</param>
public EpisodeNfoParser(
ILogger logger,
IConfigurationManager config,
IProviderManager providerManager,
IUserManager userManager,
IUserDataManager userDataManager,
IDirectoryService directoryService)
: base(logger, config, providerManager, userManager, userDataManager, directoryService)
{
}
/// <inheritdoc />
protected override void Fetch(MetadataResult<Episode> item, string metadataFile, XmlReaderSettings settings, CancellationToken cancellationToken)
{
item.ResetPeople();
var xmlFile = File.ReadAllText(metadataFile);
var srch = "</episodedetails>";
var index = xmlFile.IndexOf(srch, StringComparison.OrdinalIgnoreCase);
var xml = xmlFile;
if (index != -1)
{
xml = xmlFile.Substring(0, index + srch.Length);
xmlFile = xmlFile.Substring(index + srch.Length);
}
// These are not going to be valid xml so no sense in causing the provider to fail and spamming the log with exceptions
try
{
// Extract episode details from the first episodedetails block
ReadEpisodeDetailsFromXml(item, xml, settings, cancellationToken);
// Extract the last episode number from nfo
// Retrieves all additional episodedetails blocks from the rest of the nfo and concatenates the name, originalTitle and overview tags with the first episode
// This is needed because XBMC metadata uses multiple episodedetails blocks instead of episodenumberend tag
var name = new StringBuilder(item.Item.Name);
var originalTitle = new StringBuilder(item.Item.OriginalTitle);
var overview = new StringBuilder(item.Item.Overview);
while ((index = xmlFile.IndexOf(srch, StringComparison.OrdinalIgnoreCase)) != -1)
{
xml = xmlFile.Substring(0, index + srch.Length);
xmlFile = xmlFile.Substring(index + srch.Length);
var additionalEpisode = new MetadataResult<Episode>()
{
Item = new Episode()
};
// Extract episode details from additional episodedetails block
ReadEpisodeDetailsFromXml(additionalEpisode, xml, settings, cancellationToken);
if (!string.IsNullOrEmpty(additionalEpisode.Item.Name))
{
name.Append(" / ").Append(additionalEpisode.Item.Name);
}
if (!string.IsNullOrEmpty(additionalEpisode.Item.Overview))
{
overview.Append(" / ").Append(additionalEpisode.Item.Overview);
}
if (!string.IsNullOrEmpty(additionalEpisode.Item.OriginalTitle))
{
originalTitle.Append(" / ").Append(additionalEpisode.Item.OriginalTitle);
}
if (additionalEpisode.Item.IndexNumber is not null)
{
item.Item.IndexNumberEnd = Math.Max((int)additionalEpisode.Item.IndexNumber, item.Item.IndexNumberEnd ?? (int)additionalEpisode.Item.IndexNumber);
}
}
item.Item.Name = name.ToString();
item.Item.OriginalTitle = originalTitle.ToString();
item.Item.Overview = overview.ToString();
}
catch (XmlException)
{
}
}
/// <inheritdoc />
protected override void FetchDataFromXmlNode(XmlReader reader, MetadataResult<Episode> itemResult)
{
var item = itemResult.Item;
switch (reader.Name)
{
case "season":
if (reader.TryReadInt(out var seasonNumber))
{
item.ParentIndexNumber = seasonNumber;
}
break;
case "episode":
if (reader.TryReadInt(out var episodeNumber))
{
item.IndexNumber = episodeNumber;
}
break;
case "episodenumberend":
if (reader.TryReadInt(out var episodeNumberEnd))
{
item.IndexNumberEnd = episodeNumberEnd;
}
break;
case "airsbefore_episode":
case "displayepisode":
if (reader.TryReadInt(out var airsBeforeEpisode))
{
item.AirsBeforeEpisodeNumber = airsBeforeEpisode;
}
break;
case "airsafter_season":
case "displayafterseason":
if (reader.TryReadInt(out var airsAfterSeason))
{
item.AirsAfterSeasonNumber = airsAfterSeason;
}
break;
case "airsbefore_season":
case "displayseason":
if (reader.TryReadInt(out var airsBeforeSeason))
{
item.AirsBeforeSeasonNumber = airsBeforeSeason;
}
break;
case "showtitle":
item.SeriesName = reader.ReadNormalizedString();
break;
default:
base.FetchDataFromXmlNode(reader, itemResult);
break;
}
}
/// <summary>
/// Reads the episode details from the given xml and saves the result in the provided result item.
/// </summary>
private void ReadEpisodeDetailsFromXml(MetadataResult<Episode> item, string xml, XmlReaderSettings settings, CancellationToken cancellationToken)
{
using (var stringReader = new StringReader(xml))
using (var reader = XmlReader.Create(stringReader, settings))
{
reader.MoveToContent();
reader.Read();
// Loop through each element
while (!reader.EOF && reader.ReadState == ReadState.Interactive)
{
cancellationToken.ThrowIfCancellationRequested();
if (reader.NodeType == XmlNodeType.Element)
{
FetchDataFromXmlNode(reader, item);
}
else
{
reader.Read();
}
}
}
}
}
}
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